电动汽车充电系统及控制器外文文献翻译最新译文
电动汽车相关课题外文资料翻译
毕业设计(论文)外文资料翻译系（院）：电子与电气工程学院专业：电气工程及其自动化姓名：学号：外文出处：2007 HERE COME THE... CLEANER,GREENER CARS附件： 1.外文资料翻译译文；2.外文原文。
附件1：外文资料翻译译文2007年来了...清洁，环保汽车一个全新的领域，在柴油发动机上使用电气混合燃料电池。
这个说法是针对混合动力汽车：美国人爱他们，不过只是猜测。
一些环保人士一直在疑惑，有没有更大的混合电池组，能不能够直接插在墙上进行充电，能不能提供动力让你开车去上班，电力与小型燃气发动机使其变为可能。
这个概念最初是一个环保主义者的梦想，是来自的费利克斯克莱默，他推动了公用事业支持插件的合作。
但现在电动汽车走向市场,就像其他高科技绿色汽车当年发展的情况一样。
清洁汽车新的一天清洁和环保汽车技术正在蒸蒸日上。
可充电混合动力车,在工业发展上展现了比1900年的黄金岁月高很多的研究和开发热情。
当汽油、蒸汽、电动车在市场上进行竞争，许多公司如通用汽车、还在嘲弄像罗杰和我这样的人,是谁扼杀了电动汽车的发展?事实上,美国通用汽车公司是第一个成功制造出了可充电混合动力车的公司,他们使用了一个有趣的新方法。
他们正在研发一种全新的推进系统,在最近的底特律车展上展示,那就是雪佛兰伏特。
随着seesawing对未来石油和汽油价格的不确定性，美国人终于将注意力集中在寻找燃油经济性车辆和展望他们的下一个大型多功能运动型车。
一个由具有很大影响力的公司JD Power and Associates去年夏天对消费者的调查发现，让人吃惊的是有57%的受访者会考虑购买他们的下一个混合动力汽车，有49%的购车者会考虑E85乙醇动力汽车。
另一项由Frost＆Sullivan的调查发现约有80%的人更关注较一年前的燃油价格。
几乎有一半的人说，如果燃油价格持续上涨的话他们会考虑购买更省油的汽车或混合动力汽车。
而从居住在美国的市民的调查中发现，有五分之一的让人印象深刻的说道，他们也开始使用替代交通工具：诸如自行车，步行，公共交通和电动汽车等等。
轮毂式电动汽车驱动系统外文文献翻译、中英文翻译、外文翻译
轮毂式电动汽车驱动系统外文文献翻译、中英文翻译、外文翻译The wheel type electric car is a type of electric car thatutilizes a driving system。
There are two main forms of this system: the direct driving type ___。
This system is installed on the wheel hub of the motor。
___。
n。
main cer。
___。
it allows for the ___。
making electric control technology possible。
As a result。
the wheel type electric car is expected to e the ___ electric cars.2.Advantages and disadvantagesThe wheel type electric car has many advantages。
First。
it has a simple and compact structure。
Second。
it has high n efficiency。
which improves the overall performance of the car。
Third。
it has good ___。
it has a low noise level。
However。
there are also some disadvantages。
First。
the cost of the wheel type electric car is relatively high。
Second。
the maintenance costis also high。
Third。
the wheel type electric car has ___.The wheel type electric car has a simple and compact structure。
外文翻译---电动汽车DC-DC电源转换器的原理、建模和控制
外文原文Principle, Modeling and Control of DC-DCConvertors for EVZHAN G Cheng-ning , SUN Feng-chun , ZHAN G Wang (School of Vehic le and Transportation Engineering , Beijing Institute of Technology , Beijing 100081)Abstract :DC-DC convertors can convert the EV’s high-voltage DC power supply into the lowvoltage DC power supply. In order to design an excellent convertor one must be guided by theory of automatic control. The principle and the method of design, modeling and control for DC-DC convertors of EV are introduced. The method of the system-response to a unit step-function input and the frequency-response method are applied to researching the convertor’s mat- hematics model and control characteristic. Experiments show that the designed DC-DC convertor’s output voltage precision is high , the antijamming ability is strong and the adjustable performance is fast and smooth.Key words: EV ; DC-DC convertors ; automatic control ; mathematics model ; Bode drawingCLC number : U 469-72 Document code : A Generally there are two power supplies in EV. One is the DC high-voltage power supply that is used by high power devices such as traction motors and air conditioners etc. The other is the DClow-voltage power supply that is usually used in some control circuitand low-voltage electrical devices such as the inst- rument and lighting. It s rating voltage is 24 V or 12 V. The low-voltage power supply can be gained from the high-voltage power supply by aDC-DC conver-tor.In this paper, the main performance of the designed convertor is that the input voltage range is from DC 250 V to DC 450 V , the output voltage is DC 24 V , the maximum output current is DC 20 A , and the output precision is 1 %.1 Principle of the Convertor1.1 The Block Diagram of the DC-DC ConvertorThe block diagram of the DC-DC convertor is showed in Fig. 1. The battery series provide the DC high-voltage input U s. Thelow-voltage output of the con-vertor is U o. The setting value U i of the convertor is equal to or is in proportion to the demanded output voltage U o. The convertor is a closed-loop negative feedback-system with voltage feedback.1.2 Power Switch CircuitThe power switch circuit with semi-bridge mode is showed in Fig. 2. L1 and C1 constitute an input filter to avoid high-frequencyimpulses flowing bac- kwards. Capacitors C2and C3 constitute the partial-voltage circuit while resist-ances R1 and R2do so. IGBT1 and IGBT2 are semiconductor switch devices. C6 is a separation DC capacitor. T1 is a transformer that reduces the voltage. L2 and C7 constitute an output filter. RL is the load resistance. When the PWM signalsin the reverse semi-waves are inputted onto IGBT1 and IGBT2’s control poles , the corresponding DC voltage can be yielded from the convertor.Fig. 2 Principle circuit of power switch with semi-bridge mode 1.3 Control CircuitThe chip SG3525 is used in the PWM control circuit showed in Fig. 3. V cc is the power voltage applied to the chip, it is 12.0 V. A base-voltage of 5.1 V is yielded on pin16 of the chip that is partially used as parameter voltage input U i. The chip includes asawtooth-wave generator. R t and C t are the external resis-tance and capacity that determine the sawtooth-wave’s frequency.Pin2 of the chip is a positive-phase input port. Voltage input U i is putted to the port, here U i =2. 5 V. Pin1 of the chip is the negative-phase input port where the feedback voltage is inputted.Pin9 of the chip is the output end of the inside amplifier of the chip. The proper resistance and capacitor are connected between the pin1 andpin9 to realize compensation of the DC-DC convertor.C8 is the integral capacitor. The integral compensator is adopted as the system-compensation of the system. The PWM impulses are yielded from pin11 and pin14 of the chip. When the PWM control circuit operates normally, U i on the pin2 and U b on the pin1 should be balanced. When U b is not equal to U i , the PWM width can be automatically adjusted by the PWM control circuit to make U b equal to U i. By this way we can control the output voltage of the convertor.Fig. 3 The connection circuit for the PWM control chip SG3525 1.4 Drive CircuitThe drive circuit of IGBT usually adopts a pulse-transformer or an opto-coupler to isolate the power circuit from the control circuit. An individual power supply is needed if an opto-coupler is used, which increases the complexity of the system. So the isolation-circuit adopt s a pulse-transformer showed in Fig. 4. Transistors BG1 and BG2 in Fig. 4 compose a complementation power amplification circuit. T2 is the pulse-transformer that isolates the power circuit from the control circuit. R5 and C8 compose the acceleration circuit. The diode D6eliminates negative impulses. The diode D7 and transistor BG3 compose the rapid discharge circuit of the distributing capacitor at the control pole of IGBT.Fig. 4 Principle circuit for IGBT drive2Modeling and Control2.1 ModelingThe DC-DC convertor is a voltage negative feedback-system. Aiming to obtain the better dynamic and static characteristic we must model and analyse it in theory. According to Ref. [ 1 ] ,DC-DC convertors are the approximate second-order systems. In order to obtain accurate parameters , the method of the system-response to a unit step-function input is adopted in this paper.2.1.1 Measuring the Open-Loop System’s Response to a Unit Step-Function InputThe block diagram for measuring is shown in Fig. 5. The concrete method is described as follows : ①The voltage feedback signal is cut off ; ②The setting value of the chip SG3525 adopts themiddling value U i0 to make the width of an impulse be about 0.5 T ;③U i0 is superimposed with d U i that is composed by positive and negative rectangle wave impulses. The amplitude of d U i is taken to be equal to 0.2U i0. It should make d U o be easy to be observed to select the rectangle wave frequency , adopting f 1 = 400 Hz ; ④The output waveform of U o ( = U o 0 + d U o ) is shown in Fig. 6. As shown in Fig. 6 when f 1 = 400 Hz , period T = 2.5 ms (5 grills) , the time for the maximum voltage value is about 0.2 grills. d U o’s stable voltage amplitude is - grills. Peak overshoot is 1 grill. Every grill in the vertical direction represents 5 V. By this way the data of system-response to a unit step-function input can be obtained as follows :peak time t p = 0.1 ms ; peak overshoot σp = 1/ 2 = 50 %;output and input’s incremental ratio K0 = d U o/ d U i = 10/ 1 = 10.Fig.5 The measuring block diagram of the open-loop systemFig. 6 The system-response to a unit step-function inpu t2.1.2Determining the Open-Loop Transfer FunctionAccording to Ref s. [2,3 ] , we have the damping ratio ξ, undamped natural frequency ωn and transfer function of controlled object G p ( s) as follows :In order to ensure that when the output voltage U o =24 V the feedback voltage to pin1 of the SG3525 is 2.5 V to balance the input voltage U i = 2.5 V, we take the feedback and measuring factor asK b = U b/ U o = -15/ -4 = 01104.( 4 )2.2Design of the PID Regulator2.2.1The Principle Scheme and Transfer Function of the PID RegulatorTo resist the disturbance of the power supply voltage and load current to the DC-DC convertor so as to improve control precision , an integral compensator is adopted. The principle scheme of the integral compensator is shown in Fig. 7.Fig. 7 The principle scheme of the integral compensatorIt s transfer function isG c ( s) = K i/ s = 1/ ( RCs).( 5 )In Fig. 7 and Eq. (5), R = 10 kΩ, C = 0.1μF , K i = 1/ ( RC) = 1/ (10 ×103 ×011 ×10 - 6)= 1 000.2.2.2The Bode Drawing of the System Open-Loop Transfer FunctionThe system open-loop transfer function is the product of the controlled object’s , feedback and measuring circuit’s and integral compensator’s transfer functions. We haveG( s) = G c ( s) G p ( s) G b ( s) =The system Bode drawing is shown in Fig. 8 from Eq. (6). The curves ①and ④are respectively the logarithmic gain-frequency characteristic ,logarithmic phase-frequency characteristic of controlled object G p ( s). The curves ②and ⑤are respectively the logarithmic gain-frequency characteristic , logarithmicphase-frequency characteristic of the feedback and measuring circuit joint the integral compensator. The curves ③and ⑥are respectively the logarithmic gain-frequency characteristic and logarithmic phase-frequency characteristic of the compensatedopen-loop system. By Fig. 8 we know that the system is I-model system. When the input doesn’t change , there isn’t steady-state error. It s original phase-margin frequency ωc = 1 016 rad/ s , phase margin γ= 89.21°, so the adjustable performance of the system is fast and smooth.Fig. 8 The Bode drawing of the system open2loop transfer function 3 The Result and Conclusion of ExperimentWhen the load resistance R L = 1.2Ω, the experiment data of U s , I s , U o , I o , η(ηis efficiency of the convertor) are shown in Tab. 1. When the load resistance R L = 2.4Ω, the experiment data ofU s , I s , U o , I o , ηare shown in Tab.2.4 Conclusions①Because the integral compensator is adopted , the output voltage U o of the convertor has quite high precision even if the input power voltage and the load changes.②The width of the impulses is adjusted automatically in the convertor to realize constant output voltage value. With the increase of the input voltage the width of the impulses turn narrow , the convertor’s efficiency drops. In the process of designing a DC-DC convertor, we must diminish the adjustable range of the impulse width and make the impulse width wider when the convertor operates.③The reasonable value of the resistance and capacitor in the feedback circuit must be selected so that the feedback-system has enough gain margin and phase margin that can guarantee thecontrol-system to be adjusted smoothly.References:[1 ] Cai Xuansan , Gong Shaowen. High-frequency electronics (in Chinese) [ M].Beijing : Science Press , 1994. 232 - 246.[2] Zhang Wang , Wang Shiliu. Automatic control principle (in Chinese)[M]. Beijing: Beijing Institute of Technology Publishing House , 1994. 71 - 72.[3 ] D’Azzo J J. Linear control system analysis and design [M]. San Francisco: McGraw-Hill Book Company,1981. 83 - 92.电动汽车DC-DC电源转换器的原理、建模和控制张承宁, 孙逢春, 张旺(北京理工大学车辆与交通工程学院, 北京100081)摘要：为了设计出在电动汽车上把高压直流电源变换成低压直流电源的高品质DC-DC 变换器,采用自动控制理论进行指导. 介绍电动汽车DC-DC 变换器原理和设计,建模与控制方法. 应用阶跃响应法、频率法研究其数学模型和控制特性,并且进行分析和计算. 实验结果表明,用这种方法所研制的电动汽车DC-DC 变换器输出电压精度高,抗干扰能力强,调节特性快速、平稳.关键词：电动汽车; DC-DC 变换器; 自动控制; 数学模型; Bode 图中图分类号U 469172 文献标识码A通常有两种电源电动汽车。
电动汽车中英文对照外文翻译文献
电动汽车中英文对照外文翻译文献(文档含英文原文和中文翻译)电动车：正在进行的绿色交通革命？随着世界上持续的能源危机，战争和石油消费以及汽车数量的增加，能源日益减少，有一天它会消失得无影无踪。
石油并不是可再生资源。
在石油消耗枯竭之前必须找到一种能源与之替代。
随着科技的发展和社会进步，电动车的发明将会有效的缓解这一燃眉之急。
电动汽车将成为理想的交通工具。
面临能源成本居高不下、消费者和政府更加重视环境保护的情况下，世界汽车制造商正加大对可替代能源性混合动力汽车技术的开发投资。
该技术能极大削减燃料消费，减少温室气体排放。
许多人把目光投向了日本和美国的汽车制造商，关心他们开发混合动力和电池电动车的进展情况。
丰田普锐斯一跃成为世界上销量最好的混合动力车。
美国的新兴汽车制造商，Tesla Motors，推出了该公司首部电池电力车，名为Tesla Roadster。
截至2010年底，通用汽车公司计划推出备受赞誉的V olt混合动力汽车，而克莱斯勒公司最近已经宣布同样的计划正在进行之中。
目前，中国在新能源汽车的自主创新过程中，坚持了政府支持，以核心技术、关键部件和系统集成为重点的原则，确立了以混合电动汽车、纯电动汽车、燃料电池汽车为“三纵”，以整车控制系统、电机驱动系统、动力蓄电池/燃料电池为“三横”的研发布局，通过产学研紧密合作，中国混合动力汽车的自主创新取得了重大进展。
形成了具有完全自主知识产权的动力系统技术平台，建立了混合动力汽车技术开发体系。
混合动力汽车的核心是电池（包括电池管理系统）技术。
除此之外，还包括发动机技术、电机控制技术、整车控制技术等，发动机和电机之间动力的转换和衔接也是重点。
从目前情况来看，中国已经建立起了混合动力汽车动力系统技术平台和产学研合作研发体系，取得了一系列突破性成果，为整车开发奠定了坚实的基础。
截止到2009年1月31日，在混合动力车辆技术领域，中国知识产权局受理并公开的中国专利申请为1116件。
中英文文献翻译-轮毂式电动汽车驱动系统
附录A外文翻译英文资料翻译[原文]Wheel type electric cars driving system1. Development situation and overviewWheel type electric car is a kind of driving type electric cars, there are two basic forms, namely direct driving type electric wheels and belt wheel edges reducer electric wheels. It will be installed on the wheel hub of motor is omitted, traditional clutch, the transmission, the main reducer and differential unit etc, simplifies configuration and improve the transmission efficiency, and to realize the electric control technology through the electronic differential control wheels. Electric wheel will become the future development direction of electric cars.The electric car wheel type of the study in Japan. Japan's keio university of electric car research group has developed five different forms of vehicles. In 1991, with Tokyo electric power company jointly developed by IZA electric car seat, Cd - battery power method, with four rated power for 6.8 kW, 25kW reached the peak power of the rotor permanent magnet synchronous motor driving wheel speed can reach the highest, 176km/h. In 1996, the Japanese national institute of environmental groups jointly developed electric wheel drive system of rear wheel drive electric cars, the ECO electric wheel drive system chooses permanent brushless dc motor, power rating for 6.8 kW, for 20kW peak power, and planetary gear reducer, the electric wheels adopt mechanical braking and motor is a combination of regenerative braking. In 2001, the group launched by using lithium battery for power supply, eight high power ac synchronous motor driving wheel independent KAZ electric car. The installation of the eight wheels, and greatly increased the power, thereby the highest speed 311 km/h. The electric system KAZ used in high speed, high performance of motor rotor inside, the peak power can reach 55 kW, improve the ability of the limit speed KAZ cars, make its 0 ~ 100km/h acceleration time reach 8s. In order to make the motor output speed with the actual requirements, wheel rotation KAZ electric system matching planet gear. Using KAZ front disc brake drum brake using, rear. In 2003, Toyota motor company launched in Tokyo motor show the fuel cell concept car is also used to end an argument - N electric wheel drive technology. General motors corp. In 2001, the new trial wire four wheel drive car fuel cell concept also USES electric wheel drive Autonomy,electric wheel drive system of flexible control and arrangement, the better able to realize control technology.Domestic electric wheel drive mode study also made some progress. Tongji university "chunhui" series of fuel cell vehicles using the concept of four brushless dc motor driving wheel independent electric wheels module. Byd in 2004 Beijing auto ET concept car also adopted new drive electric car: four wheel drive motor independent pattern edge. Chinese academy of sciences, Beijing three-ring general electric company developed electric car brushless dc motor with wheels, say again electric wheels. A single wheel electric power, voltage 7.5 kW, double rear 264 V direct drive. The Chinese institute of four wheel corporation 724 electric automobile, motor performance index for the power rating: 3 kW, rated speed 3000r/min, rated voltage is 110 V.2.Structure analysisWheel electric drive system have direct driving type electric wheels and belt wheel edges reducer electric wheels are two basic forms. It depends on the rotor speed is using high-speed rotor motor or within. Direct drive a car with the rotor motor, electric wheels and a complete parts assembly wheel, electronic differential mode, motor, decorate in the wheels within wheels drive vehicle driven directly. Its main advantage is the motor, small volume, light quality and low cost, high transmission efficiency, compact structure, vehicle structure layout and design, also facilitate the retrofit design. This electric wheel directly in the installation of the wheel rim driving wheel rotation. But when the electric car in large torque, need is installed in the direct drive motor must type electric wheels can provide large in low torque. In order to make the car can have good performance, motor must also has a wide range of torque and speed adjustment. The work of the impact and vibration and the wheel rims wheels, request must be strong and reliable supporting, at the same time, because of the spring load, to ensure the quality of the comfort of vehicle suspension systems, elastic elements and damping element optimization design, motor output torque and power is limited, the system of wheel size high cost.Belt wheel gear wheel drive electric power while using high-speed rotor motor system in modern high-performance electric cars, suitable for the operation. It KuangYongChe originated from the traditional electric wheels, belongs to the slowdown driven type, the electric motor speed wheels allow in operation, usually the highest speed motor design in 4000-20000 r/min, its purpose is to obtain higher than the power, and the other performance of motor without special requirement, and can be used in ordinary speed motor rotor. In motor and reducer institution arrangement between the wheels, deceleration and increase torque of electric cars, thus ensuring the role in the speed to make enough big torque. Motor output shaft through institutions and wheel drive shaft, motor bearing not connected directly under the load and the road wheels, improve the working conditions of the bearings, Adoptsfixed planetary gear reducer, ratio of the system with large range of speed and torque, give full play to the characteristics of the motor speed, eliminate the motor torque and power under the influence. Size wheel In the design of main consideration should be given to the solution of gear noise and lubrication problem, work of motor and internal system structure design requirements. Figure 1 for wheel edges deceleration ware electric wheels.3.Wheel type electric car key technology(1)The wheel motor and its control technologyCurrently used electric wheels of the rotor motor speed and high-speed rotor motor are within the radial magnetic flux permanent magnet motor wheel. Within the high-speed rotor motor structure and the traditional permanent magnet synchronous motor or brushless dc motor are basically the same. The highest speed motor coil and mainly by friction loss and variable factors such as organization ability. As the rotor wheeled permanent magnet motor electric car driven directly by the actuator, motor NdPeB installation of the surface of the rotor surface-mounted stator slots structure more rare. The wheel diameter had substructure of constraint conditions make the armature diameter increase and improve the motor ability, At the same time, had made motor cooling conditions worsen substructuring for long time, overload ability have certain effect. Adopt stator slots structure, few &reduce volume, simplified structure, to generate electricity needed to improve the indexes of harmonic. Magnetic rotor position sensor adopts magnetic resistance type, and motor multipole rotating transformer ontology integration installation, compact structure.Motor driven by axial Angle transform technique, use axis rotation Angle transform chip will output signal is transformed into digital signals, for the current instruction position of each phase of the synthesis of circuit current instruction, With the current negative feedback signal current instruction by current regulator (CR), control type inverter power circuit, SPWM drive motor running.Wheel type electric vehicle generally has two or four wheel edges of multiple motor, implement coordinated control. The key to achieve technology is the drive motor operating control, including the vehicle steering stability control, differential control system dynamic performance optimization and control, etc. In the stability control, traction control system for the main research direction, the comprehensive energy strategy in battery technology progress, not enough before are equally important. In order to research on vehicles, electric cars and the optimization design of effective mathematical model and the rapid and effective system operation control algorithm is also world research hotspot.(2) Energy and energy management systemBattery electric vehicle is the source, is also restricted the development of key factors of electric cars. Electric car battery is the main performance indexes than energy, energy density, power, circle life and cost, etc. To make electric cars and fuel automobilecompetition, the key to develop high energy, power and long-life efficient battery.So far, the electric car battery after three generations of development, has achieved breakthrough progress. The first generation is lead-acid batteries, mainly is the valve-control lead-acid battery (VRLA), due to its high price lower than energy, and discharge, high magnification is currently only high-volume production electric car batteries. Second generation is mainly alkaline battery, have Ni - Cd, Ni fd-mh, making - S, Li ion - and Zn/Air etc. Various battery, the ratio of energy and power than lead-acid battery is high, can greatly improve the performance of the electric vehicle dynamic range and lead-acid batteries, but the price is high. Article 3 the batteries in fuel cells. Fuel cells directly will fuel energy into electricity, high efficiency, energy transformation of energy and power than than all high, and can control the reaction process, energy conversion process can be continuous, is the ideal car batteries, but is still in the development stage, and some key technology is still a breakthrough.Because the electric vehicle Co., LTD, its energy vehicle driving car fuel mileage far less than the level of energy management system, the purpose is to maximize the use of the vehicle, increase energy limited trip mileage. Intelligent energy management systems acquisition from each subsystem, the sensor information input these sensors and temperature sensor, including car when the source current and voltage recharge sensor, motor current and voltage sensor, speed and acceleration sensor and the outside environment and climate, sensors, etc. Energy management system can realize the following basic functions: the energy distribution system, The prediction of the surplus energy and continue to trip mileage, Provide the best driving mode, When the regenerative braking rationally adjust the renewable energy, Automatic temperature control and adjustment. Intelligent management system as the brain, electric car, with great flexibility and adaptability.4.ConclusionThe paper introduces development status of electric vehicle wheel type and structure characteristics, illustrates the steering wheel motor-driven car control model and key technologies. Compared with the traditional electric cars and electric car wheel type of vehicle structure, transmission efficiency and dynamic performance, range, etc are very obvious advantages, is the future development direction of electric cars. At present, low quality of high power, wheel motor research is still hot. At the same time, the power steering wheel, driving, braking torque and speed of motor control is the key and difficult point for future research.轮毂式电动汽车驱动系统1、发展现状轮毂式电动汽车是一种新兴的驱动式电动汽车，有两种基本形式，即直接驱动式电动轮和带轮边减速器电动轮。
电动汽车电子技术中英文对照外文翻译文献
(文档含英文原文和中文翻译)中英文资料外文翻译原文：As the world energy crisis, and the war and the energy consumption of oil -- and are full of energy, in one day, someday it will disappear without a trace. Oil is not in resources. So in oil consumption must be clean before finding a replacement. With the development of science and technology the progress ofthe society, people invented the electric car. Electric cars will become the most ideal of transportation.In the development of world each aspect is fruitful, especially with the automobile electronic technology and computer and rapid development of the information age. The electronic control technology in the car on a wide range of applications, the application of the electronic device, cars, and electronic technology not only to improve and enhance the quality and the traditional automobile electrical performance, but also improve the automobile fuel economy, performance, reliability and emissions purification. Widely used in automobile electronic products not only reduces the cost and reduce the complexity of the maintenance. From the fuel injection engine ignition devices, air control and emission control and fault diagnosis to the body auxiliary devices are generally used in electronic control technology, auto development mainly electromechanical integration. Widely used in automotive electronic control ignition system mainly electronic control fuel injection system, electronic control ignition system, electronic control automatic transmission, electronic control (ABS/ASR) control system,electronic control suspension system, electronic control power steering system, vehicle dynamic control system, the airbag systems, active belt system, electronic control system and the automatic air-conditioning and GPS navigation system etc. With the system response, the use function of quick car, high reliability, guarantees of engine power and reduce fuel consumption and emission regulations meet standards.The car is essential to modern traffic tools. And electric cars bring us infinite joy will give us the physical and mental relaxation. Take for example, automatic transmission in road, can not on the clutch, can achieve automatic shift and engine flameout, not so effective improve the driving convenience lighten the fatigue strength. Automatic transmission consists mainly of hydraulic torque converter, gear transmission, pump, hydraulic control system, electronic control system and oil cooling system, etc. The electronic control of suspension is mainly used to cushion the impact of the body and the road to reduce vibration that car getting smooth-going andstability. When the vehicle in the car when the road uneven road can according to automatically adjust the height. When the car ratio of height, low set to gas or oil cylinder filling or oil. If is opposite, gas or diarrhea. To ensure and improve the level of driving cars driving stability. Variable force power steering system can significantly change the driver for the work efficiency and the state, so widely used in electric cars. VDC to vehicle performance has important function it can according to the need of active braking to change the wheels of the car, car motions of state and optimum control performance, and increased automobile adhesion, controlling and stability. Besides these, appear beyond 4WS 4WD electric cars can greatly improve the performance of the value and ascending simultaneously. ABS braking distance is reduced and can keep turning skills effectively improve the stability of the directions simultaneously reduce tyre wear. The airbag appear in large programs protected the driver and passenger's safety, and greatly reduce automobile in collision of drivers and passengers in the buffer, to protect the safety of life.Intelligent electronic technology in the bus to promote safe driving and that the other functions. The realization of automatic driving through various sensors. Except some smart cars equipped with multiple outside sensors can fully perception of information and traffic facilities and to judge whether the vehicles and drivers in danger, has the independent pathfinding, navigation, avoid bump, no parking fees etc. Function. Effectively improve the safe transport of manipulation, reduce the pilot fatigue, improve passenger comfort. Of course battery electric vehicle is the key, the electric car battery mainly has: the use of lead-acid batteries, nickel cadmium battery, the battery, sodium sulfide sodium sulfide lithium battery, the battery, the battery, the flywheel zinc - air fuel cell and solar battery, the battery. In many kind of cells, the fuel cell is by far the most want to solve the problem of energy shortage car. Fuel cells have high pollution characteristics, different from other battery, the battery, need not only external constantly supply of fuel and electricity can continuously steadily. Fuel cell vehicles (FCEV) can be matched with the car engine performance and fuel economy and emission in the aspects ofsuperior internal-combustion vehicles.Along with the computer and electronic product constantly upgrading electric car, open class in mature technology and perfected, that drive more safe, convenient and flexible, comfortable. Now, the electric car from ordinary consumers distance is still very far away, only a few people in bandwagon. Electric cars with traditional to compete in the market, the carwill was electric cars and intelligent car replaced. This is the question that day after timing will come. ABS, GPS, and various new 4WD 4WS, electronic products and the modern era, excellent performance auto tacit understanding is tie-in, bring us unparalleled precision driving comfort and safety of driving.译文：随着世界能源危机的持续，以及战争和能源-----石油的消耗及汽车饱有量的增加，能源在一天一天下降，终有一天它会消失的无影无踪。
汽车专业英语 4-2 Charging System 充电系统
4.2 Charging System
Part Four: Practice
II. Read the following passage carefully and fill in the blanks with the proper form of the given words.
汽车专业英语 Specialty English for Auto Section 1 Automobile Basics Chapter 4 Charging System
4.2 Charging System
Part One: Warming up: What is the Charging System comprised of?
4.2 Charging System
Part Three: Text The charging indicator device most commonly used is a simple on/off warning lamp. 译文：最常用的充电指示器是简单的开关警告灯。 It is necessary to control the maximum voltage and current output developed by the alternator. 译文：限制最高电压和发tem
Part Two: Words Study
The main parts of the charging system.
4.2 Charging System
Part Two: Words Study
The components of the typical alternator.
新能源汽车外文翻译文献
新能源汽车外文翻译文献Electric Cars: XXX?As the XXX crises。
wars。
and increasing oil n。
the need for alternative XXX not a renewable resource。
and we must find a replacement before XXX and social progress。
the n of electric cars XXX.Faced with high XXX costs。
growing XXX。
XXX and American automakers。
XXX Prius has e the world's best-selling hybrid car。
Tesla Motors。
a new American automaker。
has launched its first battery-powered car。
the Tesla Roadster。
As of the end of 2010.XXX hybrid car。
and XXX a similar plan is underway.Currently。
XXX vehicles。
XXX。
key components。
and system n。
They have established a research institute with "three verticals" of hybrid electric vehicles。
pure electric vehicles。
and fuel cell vehicles。
and "three horizontals" of vehicle controlsystems。
motor drive systems。
and power XXX industry。
汽车电子系统中英文对照外文翻译文献
汽车电子系统中英文对照外文翻译文献汽车电子系统中英文对照外文翻译文献(文档含英文原文和中文翻译)The Changing Automotive Environment:High-Temperature ElectronicsR. Wayne Johnson, Fellow, IEEE, John L. Evans, Peter Jacobsen, James R. (Rick) Thompson, and Mark ChristopherAbstract—The underhood automotive environment is harsh and current trends in the automotive electronics industry will be pushing the temperature envelope for electronic components. The desire to place engine control units on the engine and transmission control units either on or in the transmission will push the ambient temperature above 125℃. However, extreme cost pressures,increasing reliability demands (10 year/241 350 km) and the cost of field failures (recalls, liability, customer loyalty) will make the shift to higher temperatures occur incrementally. The coolest spots on engine and in the transmission will be used. These large bodies do provide considerable heat sinking to reduce temperature rise due to power dissipation in the control unit. The majority of near term applications will be at 150 ℃ or less andthese will be worst case temperatures, not nominal. The transition to X-by-wire technology, replacing mechanical and hydraulic systems with electromechanical systems will require more power electronics. Integration of power transistors and smart power devices into the electromechanical actuator will require power devices to operate at 175 ℃ to 200 ℃ . Hybrid electric vehicles and fuel cell vehicles will also drive the demand for higher temperature power electronics. In the case of hybrid electric and fuel cell vehicles, the high temperature will be due to power dissipation. The alternates to high-temperature devices are thermal management systems which add weight and cost. Finally, the number of sensors in vehicles is increasing as more electrically controlled systems are added. Many of these sensors must work in high-temperature environments. The harshest applications are exhaustgas sensors and cylinder pressure or combustion sensors. High-temperature electronics use in automotive systems will continue to grow, but it will be gradual as cost and reliability issues are addressed. This paper examines the motivation for higher temperature operation,the packaging limitations even at 125 C with newer package styles and concludes with a review of challenges at both the semiconductor device and packaging level as temperatures push beyond 125 ℃.Index Terms—Automotive, extreme-environment electronics.I. INTRODUCTIONI N 1977, the average automobile contained $110 worth of electronics [1]. By 2003 the electronics content was $1510 per vehicle and is expected to reach $2285 in 2013 [2].The turning point in automotive electronics was governmentTABLE IMAJOR AUTOMOTIVE ELECTRONIC SYSTEMSTABLE IIAUTOMOTIVETEMPERATUREEXTREMES(DELPHIDELCOELECTRONIC SYSTEMS) [3]regulation in the 1970s mandating emissions control and fuel economy. The complex fuel control required could not be accomplished using traditional mechanical systems. These government regulations coupled with increasing semiconductor computing power at decreasing cost have led to an ever increasing array of automotive electronics. Automotive electronics can be divided into five major categories as shown in Table I.The operating temperature of the electronics is a function of location, power dissipation by the electronics, and the thermal design. The automotive electronics industry defines high-temperature electronics as electronics operating above 125 ℃. However, the actual temperature for various electronics mounting locations varies considerably. Delphi Delco Electronic Systems recently published the typical continuous maximum temperatures as reproduced in Table II [3]. The corresponding underhood temperatures are shown in Fig. 1. The authors note that typical junction temperatures for integrated circuits are 10 ℃to15℃higher than ambient or baseplate temperature, while power devices can reach 25 ℃ higher. At-engine temperatures of 125℃ peak can be maintained by placing the electronics on theintake manifold.Fig. 1. Engine compartment thermal profile (Delphi Delco Electronic Systems) [3].TABLE III THEAUTOMOTIVEENVIRONMENT(GENERALMOTORS ANDDELPHIDELCO ELECTRONICSYSTEMS) [4]TABLE IV REQUIREDOPERATIONTEMPERATURE FORAUTOMOTIVEELECTRONIC SYSTEMS(TOYOTAMOTORCORP. [5]TABLE V MECHATRONICMAXIMUMTEMPERATURERANGES(DAIMLERCHRYSLER,EATONCORPORA TION, ANDAUBURNUNIVERSITY) [6]Fig. 2. Automotive temperatures and related systems (DaimlerChrysler) [8].automotive electronic systems [8]. Fig. 3 shows an actual measured transmission temperature profile during normal and excessive driving conditions [8]. Power braking is a commonly used test condition where the brakes are applied and the engine is revved with the transmission in gear.A similar real-world situation would be applying throttle with the emergency brake applied. Note that when the temperature reached 135℃, the over temperature light came on and at the peak temperature of 145℃, the transmission was beginning to smell of burnt transmission fluid.TABLE VI2002I NTERNATIONAL T ECHNOLOGY R OADMAPFOR S EMICONDUCTORS A MBI ENTOPERATINGTEMPERATURES FORHARSHENVIRONMENTS (AUTOMOTIVE)[9]The 2002 update to the International Technology Roadmap for Semiconductors (ITRS)did not reflect the need for higher operating temperatures for complex integrated circuits,but did recognize increasing temperature requirements for power and linear devices asshown in Table VI [9]. Higher temperature power devices (diodes and transistors) will beused for the power section of power converters and motor drives for electromechanicalactuators. Higher temperature linear devices will be used for analog control of powerconverters and for amplification and some signal processing of sensor outputs prior totransmission to the control units. It should be noted that at the maximum rated temperaturefor a power device, the power handling capability is derated to zero. Thus, a 200℃ ratedpower transistor in a 200℃ environment would have zero current carrying capability. Thus,the actual operating environments must be lower than the maximum rating.In the 2003 edition of the ITRS, the maximum junction temperatures identified forharsh-environment complex integrated circuits was raised to 150℃through 2018 [9]. Theambient operating temperature extreme for harsh-environment complex integrated circuits was defined as 40℃to 125℃through 2009, increasing to 40℃to 150℃for 2010 and beyond. Power/linear devices were not separately listed in 2003.The ITRS is consistent with the current automotive high-temperature limitations. Delphi Delco Electronic Systems offers two production engine controllers (one on ceramic and one on thin laminate) for direct mounting on the engine. These controllers are rated for operation over the temperature range of 40℃to 125℃. The ECU must be mounted on the coolest spot on the engine. The packaging technology is consistent with 140℃ operation, but the ECU is limited by semiconductor and capacitor technologies to 125℃.The future projections in the ITRS are not consistent with the desire to place controllers on-engine or in-transmission. It will not always be possible to use the coolest location for mounting control units. Delphi Delco Electronics Systems has developed an in-transmission controller for use in an ambient temperature of 140℃[10] using ceramic substrate technology. DaimlerChrysler is also designing an in-transmission controller for usewith a maximum ambient temperature of 150℃ (Figs. 4 and 5) [11].II. MECHATRONICSMechatronics, or the integration of electrical and mechanical systems offers a number ofadvantages in automotive assembly. Integration of the engine controller with the engine allows pretest of the engine as a complete system prior to vehicle assembly. Likewise with the integration of the transmission controller and the transmission, pretesting and tuning to account for machining variations can be performed at the transmission factory prior to shipment to the automobile assembly site. In addition, most of the wires connecting to a transmission controller run to the solenoid pack inside the transmission. Integration of the controller into the transmission reduces the wiring harness requirements at the automobile assembly level.Fig. 4. Prototype DaimlerChrysler ceramic transmission controller [11]Fig. 5. DaimlerChrysler in-transmission module [11].The trend in automotive design is to distribute control with network communications. As the industry moves to more X-by-wire systems, this trend will continue. Automotivefinalassembly plants assemble subsystems and components supplied by numerous vendors to build the vehicle. Complete mechatronic subsystems simplify the design, integration, management, inventory control, and assembly of vehicles. As discussed in the previous section, higher temperature electronics will be required to meet future mechatronic designs.III. PACKAGINGCHALLENGES AT125℃Trends in electronics packaging, driven by computer and portable products are resulting in packages which will not meet underhood automotive requirements at 125℃. Most notable are leadless and area array packages such as small ball grid arrays (BGAs) and quadflatpacks no-lead (QFNs). Fig. 6 shows the thermal cycle test 40 ℃to 125℃ results for two sizes of QFN from two suppliers [12]. A typical requirement is for the product to survive 2000–2500 thermal cycles with<1% failure for underhood applications. Smaller I/O QFNs have been found to meet the requirements.Fig. 7 presents the thermal cycle results for BGAs of various body sizes [13]. The die size in the BGA remained constant (8.6 *8.6 mm). As the body size decreases so does the reliability. Only the 23-mm BGA meets the requirements. The 15-mm BGA with the 0.56-mm-thick BT substrate nearly meets the minimum requirements. However, the industry trend is to use thinner BT substrates (0.38 mm) for BGA packages.One solution to increasing the thermal cycle performance of smaller BGAs is to use underfill. Capillary underfill was dispensed and cured after reflow assembly of the BGA. Fig. 8 shows a Weibull plot of the thermal cycle data for the 15-mm BGAs with four different underfills. Underfill UF1 had no failures after 5500 cycles and is, therefore, not plotted. Underfill, therefore, provides a viable approach to meeting underhood automotive requirements with smaller BGAs, but adds process steps, time, and cost to the electronics assembly process.Since portable and computer products dominate the electronics market, the packages developed for these applications are replacing traditional packages such as QFPs for new devices. The automotive electronics industry will have to continuedeveloping assembly approaches such as underfill just to use these new packages in current underhood applications.IV. TECHNOLOGY CHALLENGES ABOVE125 ℃The technical challenges for high-temperature automotive applications are interrelated, but can be divided into semiconductors, passives, substrates,interconnections, and housings/connectors. Industries such as oil well logging have successfully fielded high-temperature electronics operating at 200℃and above. However, automotive electronics are further constrained by high-volume production, low cost, and long-term reliability requirements. The typical operating life for oil well logging electronics may only be 1000 h, production volumes are in the range of 10s or 100s and, while cost is a concern, it is not a dominant issue. In the following paragraphs, the technical challenges for high-temperature automotive electronics are discussed.Semiconductors: The maximum rated ambient temperature for most silicon basedintegrated circuits is 85℃, which is sufficient for consumer, portable, and computing product applications. Devices for military and automotive applications are typically rated to 125℃. A few integrated circuits are rated to 150℃, particularly for power supply controllers and a few automotive applications. Finally, many power semiconductor devices are derated to zero power handling capability at 200℃.Nelmset al.and Johnsonet al.have shown that power insulated-gate bipolar transistors (IGBTs) and metal–oxide–semiconductorfield-effect transistors (MOSFETs) can be used at 200℃[14], [15]. The primary limitations of these power transistors at the higher temperatures are the packaging (the glass transition temperature of common molding compounds is in the 180℃to 200℃range) and the electrical stress on the transistor during hard switching.A number of factors limit the use of silicon at high temperatures. First, with a bandgap of 1.12 eV, the silicon p-n junction becomes intrinsic at high temperature (225℃to 400℃depending on doping levels). The intrinsic carrier concentration is given by (1)As the temperature increases, the intrinsic carrier concentration increases. When the intrinsic carrier concentration nears the doping concentration level, p-n junctions behave as resistors, not diodes, and transistors lose their switching characteristics. One approach used in high-temperature integrated circuit design is to increase the doping levels, which increases the temperature at which the device becomes intrinsic. However, increasing the doping levels decreases the depletion widths, resulting in higher electricfields within the device that can lead to breakdown.A second problem is the increase in leakage current through a reverse-biased p-n junction with increasing temperature. Reverse-biased p-n junctions are commonly used in IC design to provide isolation between devices. The saturation current (I,the ideal reverse-biascurrent of the junction) is proportional to the square of the intrinsic carrier concentrationwhere Ego=bandgap energy atT= 0KThe leakage current approximately doubles for each10℃rise in junction temperature. Increased junction leakage currents increase powerdissipation within the device and can lead to latch-up of the parasitic p-n-p-n structure incomplimentary metal–oxide–semiconductor (CMOS) devices. Epitaxial-CMOS(epi-CMOS) has been developed to improve latch-up resistance as the device dimensionsare decreased due to scaling and provides improved high-temperature performancecompared to bulk CMOS.Silicon-on-insulator (SOI) technology replaces reverse-biased p-n junctions withinsulators, typically SiO2 , reducing the leakage currents and extending the operating rangeof silicon above 200℃. At present, SOI devices are more expensive than conventional p-njunction isolated devices. This is in part due to the limited use of SOI technology. With the continued scaling of device dimensions, SOI is being used in some high-performance applications and the increasing volume may help to eventually lower the cost.Other device performance issues at higher temperatures include gate threshold voltage shifts, decreased noise margin, decreased switching speed, decreased mobility, decreased gain-bandwidth product, and increased amplifier input–offset voltage [16]. Leakage currents also increase for insulators with increasing temperature. This results in increased gate leakage currents, and increased leakage of charge stored in memory cells (data loss). For dynamic memory, the increased leakage currents require faster refresh rates. For nonvolatile memory, the leakage limits the life of the stored data, a particular issue for FLASH memory used in microcontrollers and automotive electronics modules.Beyond the electrical performance of the device, the device reliability must also be considered. Electromigration of the aluminum metallization is a major concern. Electromigration is the movement of the metal atoms due to their bombardment by electrons (current flow). Electromigration results in the formation of hillocks and voids in the conductor traces. The mean time to failure (MTTF) for electromigration is related to the current density (J)and temperature(T) as shown in (3)The exact rate of electromigration and resulting time to failure is a function of the aluminum microstructure. Addition of copper to the aluminum increases electromigration resistance. The trend in the industry to replace aluminum with copper will improve the electromigration resistance by up to three orders of magnitude [17].Time dependent dielectric breakdown (TDDB) is a second reliability concern. Time to failure due to TDDB decreases with increasing temperature. Oxide defects, including pinholes, asperities at the Si–SiO2 interface and localized changes in chemical structure that reduce the barrier height or increase the charge trapping are common sources of early failure [18]. Breakdown can also occur due to hole trapping (Fowler–Nordheim tunneling). The holes can collect at weak spots in the Si–SiO2 interface, increasing the electricfield locally and leading to breakdown [18]. The temperature dependence of time-to-breakdown(tBD) can be expressed as [18]Values reported for Etbd vary in the literature due to its dependence on the oxidefield and the oxide quality. Furthermore, the activation energy increases with breakdown time [18].With proper high-temperature design, junction isolated silicon integrated circuits can be used to junction temperatures of 150℃to 165℃, epi-CMOS can extend the range to 225℃to 250℃ and SOI can be used to 250℃ to 280℃ [16, pp. 224]. High-temperature, nonvolatile memory remains an issue.For temperatures beyond the limits of silicon, silicon carbidebased semiconductors are being developed. The bandgap of SiC ranges from 2.75–3.1 depending on the polytype. SiC has lower leakage currents and higher electric field strength than Si. Due to its wider bandgap, SiC can be used as a semiconductor device at temperatures over 600℃. The primary focus of SiC device research is currently for power devices. SiC power devices may eventuallyfind application as power devices in braking systems and direct fuel injection. High-temperature sensors have also been fabricated with SiC. Berget al.have demonstrated a SiCbased sensor for cylinder pressure in combustion engines [19] at up to 350℃ and Casadyet al.[20] have shown a SiC-based temperature sensor for use to 500℃. At present, the wafer size, cost, and device yield have made SiC devices too expensive for general automotive use. Most SiC devices are discrete, as the level of integration achieved in SiC to date is low.Passives: Thick and thin-film chip resistors are typically rated to 125 ℃. Naefeet al.[21] and Salmonet al.[22] have shown that thick-film resistors can be used at temperatures above 200℃if the allowable absolute tolerance is 5% or greater. The resistors studied were specifically formulated with a higher softening point glass. The minimum resistance as afunction of temperature was shifted from 25℃to 150℃to minimize the temperature coefficient of resistance (TCR) over the temperature range to 300℃. TaN and NiCr thin-film resistors have been shown to have less than 1% drift after 1000 h at 200℃ [23]. Thus, for tighter tolerance applications, thin-film chip resistors are preferred. Wire wound resistors provide a high-temperature option for higher power dissipation levels [21].High-temperature capacitors present more of a challenge. For low-value capacitors, negative-positive-zero (NPO) ceramic and MOS capacitors provide low-temperature coefficient of capacitance (TCC) to 200℃. NPO ceramic capacitorshave been demonstrated to 500℃ [24]. Higher dielectric constant ceramics (X7R, X8R, X9U), used to achieve the high volumetric efficiency necessary for larger capacitor values, exhibit a significant capacitance decrease above the Curie temperature, which is typically between 125℃ to 150℃. As the temperature increases, the leakage current increases, the dissipation factor increases, and the breakdown strength decreases. Increasing the dielectric tape thickness to increase breakdown strength reduces the capacitance and is a tradeoff. X7R ceramic capacitors have been shown to be stable when stored at 200℃[23]. X9U chip capacitors are commercially available for use to 200 C, but there is a significant decrease in capacitance above 150℃.Consideration must also be given to the capacitor electrodes and terminations. Ni is now being substituted for Ag and PdAg to lower capacitor cost. The impact of this change on hightemperature reliability must be evaluated. The surface finish for ceramic capacitor terminations is typically Sn. The melting point of the Sn (232℃) and its interaction with potential solders/brazes must also be considered. Alternate surfacefinishes may be required.For higher value, low-voltage requirements, wet tantalum capacitors show reasonable behavior at 200℃ if the hermetic seal does not lose integrity [23]. Aluminum electrolytics are also available for use to 150℃. Mica paper (260℃) and Teflonfilm (200℃) capacitors can provide higher voltage capability, but are large and bulky [25]. High-temperature capacitors are relatively expensive. V olumetrically efficient, high-voltage, highcapacitance, high-temperature and low-cost capacitors are still needed.Standard transformers and inductor cores with copper wire and teflon insulation are suitable for operation to 200℃. For higher temperature operation, the magnetic core, the conductor metal (Ni instead of Cu) and insulator must be selected to be compatible with the higher temperatures [16, pp. 651–652] Specially designed transformers can be used to 450℃ to 500℃, however, they are limited in operating frequency.Crystals are required for clock frequency generation for microcontrollers. Crystals with acceptable frequency shift over the temperature range from 55℃to 200℃have been demonstrated [22]. However, the selection of packaging materials and assembly process for the crystal are key to high-temperature performance and reliability. For example, epoxies used in assembly must be compatible with 200℃ operation.Substrates: Thick-film substrates with gold metallization have been used in circuits to 500℃[21], [23]. Palladium silver, platinum silver, and silver conductors are morecommonly used in automotive hybrids for reduced cost. Silver migration has been observed with an unpassivated PdAg thick-film conductor under bias at 300℃ [21]. The time-to-failure needs to be examined as a function of temperature and bias voltage with and without passivation. Low-temperature cofired ceramic (LTCC) and high-temperature cofired ceramic (HTCC) are also suitable for high-temperature automotive applications. Embedded resistors are standard to thick-film hybrids, LTCC, and some HTCC technologies. As previously mentioned, thick-film resistors have been demonstrated at temperatures 200℃. Dielectric tapes for embedded capacitors have also been developed for LTCC and HTCC. However, these embedded capacitors have not been characterized for high-temperature use.High-Tg laminates are also available for fabrication of hightemperature printed wiring boards. Cyanate esters [Tg=250℃by differential scanning calorimetry (DSC)], polyimide (260℃by DSC), and liquid crystal polymers(Tm>280℃）provide options for use to 200℃. Cyanate ester boards have been used successfully in test vehicles at 175℃, but failed when exposed to 250℃ [26]. The higher coefficient of thermal expansion (CTE) of the laminate substrates compared to the ceramics must be considered in the selection of component attachment materials. The temperature limits of the laminates with respect to assembly temperatures must also be carefully considered. Work is ongoing to develop and implement embedded resistor and capacitor technology for laminate substrates for conventional temperature ranges. This technology has not been extended to high-temperature applications.One method many manufacturers are using to address the higher temperatures whilemaintaining lower cost is the use of laminate substrates attached to metal. The typical design involves the use of higher Tg( +140℃ and above) laminate substrates attached to an aluminum plate (approximately 2.54-mm thick) using a sheet or liquid adhesive. To assist in thermal performance, the laminate substrate is often thinner (0.76 mm) than traditional automotive substrates for under-the-hood applications. While this design provides improved thermal performance, the attachment of the laminate to aluminum increases the CTE for the overall substrates. The resultant CTE is very dependent on the ability of the attachment material to decouple the CTE between the laminate substrate and the metal backing. However, regardless of the attachment material used, the combination of the laminate and metal will increase the CTE of the overall substrate above that of a stand-alone laminate substrate. This impact can be quite significant in the reliability performance for components with low CTE values (such as ceramic chip resistors). Fig. 9 illustrates the impact of two laminate-to-metal attachment options compared to standard laminate substrates [27], [28]. The reliability data presented is for 2512 ceramic chip resistors attached to a 0.79-mm-thick laminate substrate attached to aluminum using two attachment materials. Notice that while one material significantly outperforms the other, both are less reliable than the same chip resistor attached to laminate without metal backing.This decrease in reliability is also exhibited on small ball grid array (BGA) packages. Fig. 10 shows the reliability of a 15-mm BGA package attached to laminate compared to the same package attached to a laminate substrate with metal backing [27], [28]. The attachment material used for the metal-backed substrate was the best material selected from previous testing. Notice again that the metal-backed substrate deteriorates the reliability. This reliability deterioration is of particular concern since many IC packages used for automotive applications are ball grid array packages and the packaging trend is for reduced packaging size. These packaging trends make the use of metal-backed substrates difficult for next generation products.One potential solution to the above reliability concern is the use of encapsulants and underfills. Fig. 11 illustrates how conformal coating can improve component reliability for surface mount chip resistors [27], [28]. Notice that the reliability varies greatly depending on material composition. However, for components which meet a marginal level of reliability, conformal coatings may assist the design in meeting the target reliability requirements. The same scenario can be found for BGA underfills. Typical underfill materials may extend the component life by a factor of two or more. For marginal IC packages, this enhancement may provide enough reliability improvement toall the designs to meet under-the-hood requirements. Unfortunately, the improvements provided byencapsulants and underfills increase the material cost and adds one or more manufacturing processes for material dispense and cure.Interconnections: Methods of mechanical and electrical interconnection of the active and passive components to the board include chip and wire,flip-chip, and soldering of packaged parts. In chip and wire assembly, epoxy die-attach materials can beused to 165℃ [29]. Polyimide and silicone die-attach materials can be used to 200℃. For higher temperatures, SnPb ( >90Pb), AuGe, AuSi, AuSn, and AuIn have been used. However,with the exception of SnPb, these are hard brazes and with increasing die size, CTE mismatches between the die and the substrate will lead to cracking with thermalcycling. Ag–glass die attach has also been used with Si die, but the die stresses are high [30]. The processing temperatures (330℃ to 425℃) required for the hard brazes and the Ag-glass are not compatible with the laminate-based substrates.Small-diameter Au and Pt wire bonding can be used to 500℃ on thick-film Au with Au pads on the SiC die [22].However, most Si die have aluminum metallization and the use of Au wire is limited to 180 ℃to 200℃due to Au–Al intermetallic formation and Kirkendall voiding. Use of Al wire creates a monometallic bond at the die interface. Pd-doped thick-film Au conductors have been developed for compatibility with small-diameter Al wire to 300℃[31]. While Al wire can be bonded to silver bearing thick-film conductors, the primary concern is corrosion due to the galvanic potential between Al and Ag [32]. Chlorine contamination in the presence of moisture is the primary corrosion mechanism. Increasing the Pd content of the PdAg conductor, extreme care in the cleanliness of the assembly and potting in silicone gel can be used to reduce the risk of corrosion. Au wire can be bonded to pure Ag thick films, but the Ag migrates along the surface of the gold wire at elevated temperatures [33].On laminate substrates, Ni/Aufinishes over the copper are compatible with Au wire (thick Aufinish) and with Al wire (thin Aufinish). In the case of Al wire, the Au layer must be thin so the Al wire bonds to the underlying Ni. Intermetallic formation and voiding will occur if the Au layer is too thick. If a phosphorus containing Ni is used, the phosphorus content should be limited to 6 –8 .Al–Ni bonds are potentially reliable to 300℃, but further study is required [32].For wire bonding to power devices, large-diameter Al wire bonding is used. In some。
电动汽车历史与发展外文文献翻译、中英文翻译、外文翻译
电动车发展史
1、 法国汽车发展史
1
在汽车发展史上，法国人有着自己独特的地位。早在 1769 年，法国陆军技术军 官居尼奥就在政府的支持下试制成功了世界上第一辆具有实用价值的蒸汽汽车，从而 引发了世界性的研究和制造汽车的热潮。但随后到来的法国大革命却让法国的汽车研 究中断了几十年,直到 1828 年,巴黎技工学校校长配夸尔制造了一辆蒸汽牵引汽车，其 独创的差速器及独立悬挂技术至今仍在汽车上广泛应用着。法国出现第一辆汽油汽车 是在 1890 年，由阿尔芒·标致创立的标致公司生产,一战前,标致的年产量达到 1.2 万 辆,到 1939 年时年产量达 4.8 万辆.而 1915 年创办的雪铁龙汽车公司发展更快， 在二十 年代初年产量就突破 10 万辆，1928 年日产达汽车 400 辆,占全法汽车产量三分之一。 另一创办于 1898 年的大型汽车厂雷诺汽车公司发展也很快，1914 年便形成了大规模 生产，一战期间更是因军火生产而筹集了大量资金用于汽车生产。进入 80 年代，世 界性的经济危机使法国汽车工业受到了一定的挫折，雷诺公司更是连年亏损， 1984 年产量急剧下降到 30 万辆，但几年后雷诺公司便恢复了元气，1999 年 3 月还收购了 日产汽车公司 36.8%的股份，去年的产量达 229 万辆。法国汽车的总体特点就是车体 较小而设计新颖，符合大众化的方向，因此在西欧成为家庭轿车的热门，雷诺的“丽 人行”微型车在欧洲曾多次获销量第一。但是在豪华车、跑车领域，法国汽车公司就 不如美、德、日等国汽车公司出色，这成为法国汽车业的遗憾。
关于新能源充电管理系统的外文文献
关于新能源充电管理系统的外文文献New Energy Charging Management SystemWith the rapid development of new energy vehicles, the demand for charging infrastructure has been increasing. In order to efficiently manage the charging process and ensure the stability of the power grid, a new energy charging management system is designed. This system integrates advanced technology to optimize the charging experience for users while minimizing energy waste and reducing costs.1. IntroductionThe new energy charging management system is a comprehensive solution that includes hardware, software, and communication networks. It aims to provide a seamless and convenient charging experience for users while ensuring the efficient use of resources. By implementing smart charging strategies, the system can balance the demand for electricity with the available supply, thereby reducing the strain on the power grid.2. Components of the SystemThe new energy charging management system consists of several key components, including charging stations, power distribution units, communication modules, and a central control system. The charging stations are equipped with advanced technology that allows for fast and efficient charging of electric vehicles. The power distribution units regulate the flow of electricity to ensure a stable and reliable charging process. Communication modules enable real-time data exchange between differentcomponents of the system, while the central control system manages and monitors the overall operation of the system.3. Smart Charging StrategiesOne of the key features of the new energy charging management system is its ability to implement smart charging strategies. These strategies take into account factors such as electricity demand, renewable energy generation, and user preferences to optimize the charging process. By dynamically adjusting the charging rate based on these factors, the system can reduce energy waste and lower costs for users. Additionally, the system can prioritize charging for electric vehicles that are in urgent need of power, ensuring that all users have access to charging facilities when they need them.4. Benefits of the SystemThe new energy charging management system offers several benefits for both users and energy providers. For users, the system provides a convenient and reliable charging experience, with the option to schedule charging sessions in advance. This helps to minimize waiting times and ensures that users can access charging facilities when they need them. For energy providers, the system helps to optimize the use of resources and reduce the strain on the power grid. By implementing smart charging strategies, the system can balance the demand for electricity with the available supply, ensuring a stable and reliable energy supply for all users.5. ConclusionIn conclusion, the new energy charging management system is an innovative solution that can help to optimize the charging process for electric vehicles. By integrating advanced technology and smart charging strategies, the system offers a convenient and efficient charging experience for users while minimizing energy waste and reducing costs. With the increasing demand for charging infrastructure, the new energy charging management system is a crucial tool for ensuring the stability of the power grid and promoting the widespread adoption of new energy vehicles.。
汽车 专业 外文 文献 英文 翻译
外文文献原稿和译文原稿A New Type Car -- Hybrid Electric VehicleWith skyrocketing fuel prices and changes in weather patterns, many car manufacturers claimed to develop the kind of vehicles that will increase the mileage and reduce the emissions. Hybrid car is a kind of vehicle which can meet above requirements. A hybrid car features a small fuel-efficient gas engine combined with an electric motor that assists the engine.The reasons of building such a complicated machine are twofold: to reduce tailpipe emissions and to improve mileage. Firstly, hybrid cars are good for the environment. They can reduce smog by 90 percent and they use far less gasoline than conventional cars. Meanwhile, hybrid cars burn less gasoline per mile, so they release fewer greenhouse gases. Secondly, hybrid cars are economical. Hybrid cars, which run on gas and electricity, can get up to 55 to 60 miles per gallon in city driving, while a typical SUV might use three times as much gas for the same distance! There are three reasons can mainly account for that: 1) Hybrid engines are much smaller than those on conventional cars. A hybrid car engine is to accommodate the 99% of driving time when a car is not going up hills or accelerating quickly. When extra acceleration power is needed, it relies on the battery to provide additional force. 2) Hybrid gasoline engine can shut off when the car is stopped and run off their electric motor and battery.3) Hybrid cars often recover braking energy. Electric motors could take the lost kinetic energy in braking and use it to charge the battery. Furthermore, hybrids are better than all-electric cars because hybrid car batteries recharge as you drive so there is no need to plug in. Most electric cars need to be recharged every 50-100miles. Also, most electric cars cannot go faster than 50-60 mph, while hybrids can.Hybrid cars bridge the gap between electric and gasoline-powered cars by traveling further and driving faster and hybrid gas-electric cars are proving to be a feasible alternative at a time of high gas prices. So, in my opinion, hybrid cars will have a bright future.How Does Hybrid Electric Vehicle Work？You probably own a gasoline or diesel-engine car. You may have heard of electric vehicles too. A hybrid vehicle or hybrid electric vehicle (HEV) is a combination of both. Hybrid vehicles utilize two or more sources of energy for propulsion. In the case of HEVs, a combustion engine and an electric motor are used.How it works depends on the type of drive train it has. A hybrid vehicle can either have a parallel or series or parallel-series drive train.Parallel HybridThe parallel hybrid car has a gas tank, a combustion engine, transmission,electric motor, and batteries.A parallel hybrid is designed to run directly from either the combustion engine or the electric motor. It can run using both the engine and the motor. As a conventional vehicle, the parallel hybrid draws its power from the combustion engine which will then drive the transmission that turns the wheels. If it is using the electric motor, the car draws its power from the batteries. The energy from the batteries will then power the electric motor that drives the transmission and turns the wheel.Both the combustion engine and the electric motor are used at the same time during quick acceleration, on steep ascend, or when either the engine or the motor needs additional boost.Since the engine is directly connected to the wheels in a parallel drive train, it eliminates the inefficiency of converting mechanical energy into electrical energy and back. This makes a very effective vehicle to drive on the highway.Series HybridThe series hybrid car also has a gas tank, a combustion engine, transmission, electric motor, and batteries with the addition of the generator. The generator can be the electric motor or it can be another separate component.The series configuration is the simplest among the 3. The engine is not connected to the transmission rather it is connected to the electric motor. This means that the transmission can be driven only by the electric motor which draws its energy from the battery pack, the engine or the generator.A hybrid car with a series drive train is more suited for city driving conditions since the engine will not be subjected to the varying speed demands (stop, go, and idle) that contributes to fuel consumption.Series-Parallel HybridThe series-parallel configuration solves the individual problems of the parallel and series hybrid. By combining the 2 designs, the transmission can be directly connected to the engine or can be separated for optimum fuel consumption. The Toyota Prius and the Ford Escape Hybrid use this technology.Honda’s hybridFor those of you who have toyed with the idea of buying a hybrid but were discouraged by the price, you are not alone. In fact, despite the growing concern for the environment, not to mention the skyrocketing price of gas, hybrid cars still only represent a small percentage of global car sales, and a major reason for this is the cost.Hybrids are considered the wave of the future because they not only reduce emissions, addressing the issue of climate change, but they get great gas mileage, an important consideration with the current price of oil. It should be noted that hybrids can also improve the power of the engine, which compromises any advantages in fuel efficiency and emissions. Whatever the application, however, the technology makes the cars more expensive.Because of this, they are the vehicle of choice for only a small niche of people who can afford them, and they currently enjoy a special status amongst the image conscious celebrity-set. For most average consumers, however, they are not an option.That may soon change.Honda Motor Corporation, one of the largest car manufacturers in the world and a leader in fuel efficient technology, has unveiled it’s plan to introduce a low-cost hybrid by 2009. If they can pull it off, they hope to make the hybrid a more mainstream car that will be more appealing to the general public, with the ultimate goal of achieving greater sales and broader appeal than their current incarnation.This, of course, is making Detroit nervous, and may signal a need for American car makers to start making greener and more fuel efficient vehicles, something they could afford to ignore in the past because hybrid cars weren’t worth their attention (due to such a small market share) while gas-guzzling SUVs have such high profit margins.Honda, meanwhile, has had to confront a growing need to compete with Toyota, which has not only grown to be the world’s largest automaker, but makes the car that has become synonymous with the hybrid movement, the Prius. Honda is therefore faced with the seemingly insurmountable task of challenging Toyota’s dominance in the market.Concurrently, Toyota is racing to lower production costs on the Prius, as well, which would hopefully result in a lower cost to the consumer. All eyes are on a potentially favorable car buyers market in 2009.In the meantime, with even adamant global warming naysayers warming up (no pun intended) to the possibilities of an ecological disaster on the horizon, maybe it’s time that we got over our need to drive huge SUVs and start moderating our fuel consumption.Then again, as gas prices hovering around $4.00 and with no ceiling in sight, we may have little choice in the matter.Engine Operating PrinciplesMost automobile dngines are internal combustion, reciprocating 4-stroke gasoline engines, but other types have been used, including the diesel, the rotary ( Wankel ) , the 2-srtoke, and stratified charge.Reciprocating means up and down or banck and forth, It is the up and down action of a piston in the cylinder blick, or engine block. The blick is an iron or aluminum casting that contains engine cylinders and passges called water jackets for coolant circulation. The top of the block is covered with the cylinder head. Which forms the combustion chanber. The bottom of the block is covered with an oil pan or oil sump.Power is produced by the linear motion of a piston in a cylinder. However, this linear motion must be changed into rotary motion to turn the wheels of cars of trucks. The piston is attached to the top of a connecting rod by a pin, called a piston pin or wrist pin. The bottom of the connecting rod is attached to the crankshaft. The connecting rod transmits the up-and-down motion of the piston to the crankshaft, which changes it into rotary motion.The connecting rod is mounted on the crankshaft with large beaings called rodbearings. Similar bearings, called main bearings, are used to mount the crankshaft in the block. Shown in Fig. 1-1The diameter of the cylinder is called the engine bore. Displacement and compression ratio are two frequently used engine specifications. Displacement indicates engine size, and compression ratio compares the total cylinder volume to compression chamber volume.The term stroke is used to describe the movement of the iston within the cylinder, as well as the distance of piston travel. Depending on the type of engine the operating cycle may require either two or four strokes to complete. The 4-stroke engine is also called Otto cycle engine, in honor of the German engineer, Dr. Nikolaus Otto, who first applied the principle in 1876. In the 4-stroke engine, four strokes of the piston in the cylinder are required to complete one full operating cycle. Each stroke is named after the action it performs intake, compression, power, and exhaust in that order, shown in Fig1-2.1、Intake strokeAs the piston moves down, the vaporized mixture of fuel and air enters the cylinder through open intake valve. To obtain the maximum filling of the cylinder the intake valve opens about 10°before t.b.c., giving 20°overlap. The inlet valve remains open until some 50°after b.d.c. to take advantage of incoming mixture.2、 Compression strokeThe piston turns up, the intake valve closes, the mixture is compressed within the combustion chamber, while the pressure rise to about 1Mpa, depending on various factors including the compression ratio, throttle opening and engine speed. Near the top of the stroke the mixture is ignited by a spark which bridges the gap of the spark plug.3、 Power strokeThe expanding gases of combustion produces a rise in pressure of the gas to some 3.5Mpa, and the piston is forced down in the cylinder. The exhaust valve opens near the bottom of the stroke.4、Exhust strokeThe piston moves back up with the exhaust valve open some 50°before b.d.d., allowing the pressure within the cylinder to fall and to reduce ‘back’pressure on the piston during the exhaust stroke, and the burned gases are pushed out to prepare for the next intake stroke.The intake valve usually opens just before the exhaust stroke. This 4-stroke cycle is continuously repeared in every as long as the engineremains running.A 2-stroke engine also goes through four actions to complete one operating cycle.However, the intake and the compression actions are combined in one seroke, and the power and exhaust actions are combined in the other stroke. The term2-stroke cycle or 2-stroke is preferred to the term 2-cycle, which is really not accurate.In automobile engines, all pistons are attached to a single crankshaft. The more cylinders an engine has, the more power strokes produced for cach revolution. This means that an 8-cylinder engine runs more smoothly bdcause the power atrokes arecloser together in time and in degrees of engine rotation.The cylinders of multi-cylinder automotive engines arranged in one of three ways. 1、Inline engines use a single block of cylinder.Most 4-cylinder and any 6-cylinder engines are of this design. The cylinders do not have to be vertical. They can be inclined either side.2、V-type engines use two equal bands of cylinders, usually inclined 60degrees or 90degrees from the cach other. Most V-type engines have 6 or 8 cylinders, although V-4 and V-12 engines have been built.3、Horizontally opposed or pancake engines have two equal banks of cylinders 180degreeas apart. These space saving engine designs are often air-cooled, and are found in the Chevrolet Carvair, Porsches, Subaus, and V olkswagens. Subaus design is liquid cooled.Late-model V olkswagen vans use a liquid-cooled version of the air cooled VWhorizontally opposed engine.译文新型汽车----混合动力汽车在油价飞涨的今天，汽车制造商被要求发展一种排放低，行驶里程长的汽车。
电动汽车充电桩设计外文文献翻译最新译文
文献出处Hawkins S. The design of the electric vehicle charging pile [J]. SAE International Journal of Alternative Powertrains, 2015，5（3）: 213-221.原文The design of the electric vehicle charging pileAbstractIn the world's oil resources shortage and the grim situation of global warming, the construction of low carbon vehicles will become the auto industry a new development direction. Current research of electric vehicles around the world has entered the white-hot. People try to make it become a mainstream in the 21st century the development of the automobile. Electric vehicle charging infrastructure is an important part of the electric car industry chain can not be ignored in, at the same time of developing electric vehicle industry also should fully take into account the development of the charging infrastructure, so the design of electric vehicle charging pile and its control method of study is very necessary.Keywords: Electric vehicle charging pile; Equilibrium control; The human-computer interaction1 IntroductionCountries in the world to promote energy conservation and environmental protection, of which the word "low carbon" everyone not unfamiliar, carbon emissions in today's car is bigger, the industry also gradually focus on low carbon field. The auto industry's carbon emission is higher and higher. To be raising industry development and the balance of environmental emissions, the automobile industry faced with the transformation of development. In the world's oil resources shortage and the serious situation of global warming, the global auto industry uniform standards will reference to carbon emissions standards, leading the global auto industry development better. Electric cars compared to traditional petrol powered cars, in terms of environmental protection and energy saving shows the outstanding advantages. The electric car has many advantages, such as less pollution emissions, high efficiency, low noise, low running cost, etc., it has these advantages in reducing air pollution and energy shortage is of great significance.2 Electric vehicle charging infrastructureThe key technologies of electric vehicle (EV) mainly includes: power battery and charging infrastructure as the core of energy systems:Drive motor and drive system as the core of the power system. In a coordinated control system, ensure the vehicle safe, efficient and comfortable operation as the core of the vehicle control system. For carbon reduction and environmental protection of electric vehicles, charging device is indispensable. Its function is to turn within the electricity to the electric vehicle battery power grid, to power electric vehicles.Charging infrastructure is mainly charging and charging pile. Charging stations within, usually equipped with a number of fast charging plugs and a few slow charging pile. Two kinds of charging infrastructure each have advantages and disadvantages, need to choose according to actual species suitable for local facilities. Given priority to with quick charge mode of charging station a short charging time is charging the advantages of high efficiency. At a high speed along the service area, selection of large charging stations and other places of power is to be able to produce 600 V / 300 A charging pile. Usually consider including the use of environmental factors, such as charging pile only in produce high voltage and large current, and power is larger (100 kw), to ensure that the electric car charging efficiency, the technology of charging methods and security put forward higher requirements. So charging stations than charging pile construction and management of cost is much higher, the size should be and petrol stations. Now automotive battery technology remains to be development, rapid charging pattern can cause greater damage to the battery. The expert thinks, quick charge mode is equivalent to in a relatively short period of time forced "into" power to the battery, after several quick charge battery, its life will be greatly reduced. In addition it is important to note that large-scale electric vehicle charging demand just rely on the charging station is fulfilled, and charging stations will be occupied land area, will produce a lot of management costs. Therefore, charging station is only applicable to charge for a small amount of public transport services. Charging pile covers an area of a few, the cost is very low, very suitable for the supermarket in the city, parking lots, construction of residential area of denseparking of vehicles, such as the area. And more importantly, charging pile mainly slow filling pattern, due to the need of the small current, thus to ensure the safety of its performance, and of great benefit to extend the service life of the battery. But the disadvantage of this schema also clear, have emergency operation requirements in the car, the charging is not implemented in time. Such as providing 220 V / 16 A home charging pile of ac power, the charger is small volume and simple operation of car charger. The charging pile is mainly provide service charge for private cars, the power is about 3 ~ 5 kw, charging time need 5 ~ 10 hours.3 Present situation of charging systemIn recent years from two level of products and technologies, charging system has made good progress: charging products with the development of control technology, artificial intelligence and other advanced technology, get rid of the simple, the direction of multi-function, safer intelligent. The field bus technology, such as development, RS485, LIN bus makes the monitoring system of the diversification of means of communication, high speed and security. French multi-purpose nuclear and hydroelectric power, the power generation capacity is enough, according to statistics, three-quarters of the total electricity from nuclear power plants in France, one 6 from hydropower station, and its power supply clean, cheap electricity, automobile industry developed, so it is the world's one of the first countries to develop and promote the electric car. The French government collaborative EDF (EDF) Company, company, Renault and PSA (Renault) motors, and other cooperation, developing electric cars. In LaRocheHe investment produces small four 50 vehicles, electric vehicles and built 12 (including 3 fast and nine common) charging stations, has been put into use and tested more than 2 years. Japan's new energy vehicles has been in the world leading level, the Tokyo electric power company has announced that it successfully developed large quick charger, the charger has greatly shortened the time, the Japanese electric car popularization provides the possibility of a larger. Charging pile design and control of the construction of the charging infrastructure, as early as the First Solar companies in the United States built 5 in California highway fast charging pile, can under the condition of 240 v / 240A, 3.5 hours to complete the charging of electricvehicles.4 Charging pile of functional requirementsWith electric passenger cars promote gradually, people to its corresponding charging infrastructure also gave high attention. If the charging station, charging pile, can carry on the security and intelligence to the electric vehicle charging, so the popularity of electric cars, progress will be accelerated. In order to realize intelligent charging pile in the management and application, you need to understand the function of charging pile demand. Electric vehicle charging piles need to have the following several main functions: to guarantee the normal work of the system, monitoring and protection measures necessary, charging posts must have electrical protection device, when the system failure occurs, the system of charging power supply is cut off quickly, within the stipulated time to ensure the personal safety of users. Charging pile must be reliable operation, charging pile equipment adopts modular structure; local fault cannot threaten the normal operation of the whole system, charging pile must also be able to parallel processing more than one event. All logins, control, exit the important operations, such as charging pile should have corresponding records, but also allows to query and statistic of operating records, charging pile have ensure data and system security protection of information is not theft and destruction. Charging pile should use the graphical interface in Chinese, the user according to the screen display can realize self-help charging; provide convenience for people intuitively clear charging operation. Users can query on charging pile to the charging time, place, and the historical data of the basic information such as rechargeable battery, charging pile should also install with embedded printers, convenient charging print statements. Charging pile should be according to the electricity information deriving from watt-hour meter, and calculate the user charge the amount spent, and can save data backup, convenient send to background monitoring system. Charging pile system should be able to practice the trapezoidal pricing mechanism.5 The integral design of charging pile systemThe electric car is ac charging pile used in ac, dc power supply, ac working voltage is 220 v or 380 v, can according to different types of electric vehicles, adoptsthe corresponding charging voltage grade, ordinary pure electric car charging pile to charge need 4 ~ 5 hours. The input voltage of dc charging pile using three phase four wire AC380V, frequency 50HZ can provide enough power, and the output of adjustable dc, therefore can meet the requirement of quick charge. Electric vehicle charging pile, concentrator, battery management system, charging management platform, such as complementary to each other, constitute the charging system. Battery management system (BMS) real-time information interaction with charging posts controller, the purpose is to monitor the battery voltage, current and temperature state parameters, forecast capacity (SOC) of batteries, batteries in to avoid bad phenomenon (over discharge, overcharge, overheating and battery voltage imbalance between monomer), it can maximize battery storage capacity and cycle life of assurance. The service management platform is mainly to the electric car battery charge information, IC and piles these data for centralized management of information. In general, the service management platform is important function for charging management and operation, as well as integrated query. To intuitively clear communication with the customers, charging pile has important information can be shown on LCD display convenient man-machine interaction. Electric vehicle charging, the screen will display the charging time, charging power, the main information such as the amount payable.Charging, the battery charging or owe electricity will damage to the battery inside, accelerate cell aging, will affect battery performance. According to the analysis, the inappropriate way of charging is the main cause of battery life cut short. Therefore, how to guarantee quickly and does not affect the battery life, has become an important research topic in recent years. Charging mode choice determines the length of the battery life, among them, the constant current, constant voltage charging and charging in stages of these methods is a common way of charging. Is the advantage of constant current charging control method is simple, but by the law of mass we know: rechargeable batteries can accept current capacity with the charging process is a trend of gradual decline. Late to charge, the charging current is much used for electrolysis of water, can produce gas, so that to get nothing. Constant voltage charging way earlyin the process of charging current is too large, the impact on battery life is great, and constant voltage charging mode battery plate bending easily, causing the battery scrap. Phase charging method is actually a constant current, constant voltage charging the method of combining more commonly used phase charging method includes two stages and three phase charging method.译文电动汽车充电桩的设计摘要在世界石油资源短缺和全球气候变暖的严峻形势下，建设低碳汽车将成为汽车产业一种新的发展方向。
电动汽车充电桩设计外文文献翻译最新译文
电动汽车充电桩设计外文文献翻译最新译文With the world facing a shortage of oil resources and the challenge of global warming。
the development of low carbon vehicles has XXX in the 21st century。
As such。
the development of electric XXX。
the study of the design of electric vehicle charging piles and their control methods is of great importance.2 XXX InfrastructureThe XXX part of the electric car industry chain。
Without a well-designed charging infrastructure。
the development of electric vehicles will be XXX。
it is XXX on the design of electric vehicle charging piles and their control methods。
Equilibrium control and puter XXX.3 Design of Electric Vehicle Charging PileThe design of the electric XXX。
efficiency。
and convenience。
The charging pile should be designed to be user-friendly and easy to operate。
It should also be equipped with safety features to XXX do not occur during the charging process.4 Equilibrium Control of XXX Charging PileEquilibrium control XXX of the design of electric XXX is operating at an optimal level。
电动汽车发展：过去、现在与未来外文文献翻译、中英文翻译、外文翻译
消费市场在替代燃料车辆以及HEV和电动车辆方面带来了显着的增长。 Polk＆Company进行的HEV研究表明，美国和西欧的HEV销售市场份额呈上升趋势。事实上，OEM厂商的HEV模型选择从2000年的两倍（Insight＆Prius）增长到今天的二十多岁。 2007年，HEV的销售量已经超过了30万辆HEV。来自OEM的HEV和电动车辆的进一步已知承诺将进一步改善HEV生产。增加插电式和电动汽车，将加强和加快目前的电气化趋势。
D.现代HEV发展
然而，在1999年至21世纪初期，纯电动汽车出现了一种新型的电动汽车。本田向美国市场推出首款HEV，本田Insight，为汽车行业带来了另一个里程碑。随着市场的接受和普锐斯的成功，HEV技术显示出成熟和潜力。福特在“曼哈顿坦克”活动期间推出了第一款美国混合动力电动汽车Escape SUV HEV，并在充气城市交通中注册了600英里/坦克，开启了HEV中美国新时代的竞争。截至2008年，HEV销售总额达到2.5％以上。深刻的是，丰田，本田和福特的下一代HEV已经在2009年引入了更新技术的进一步细化。燃油效率也有所提高。
三，结论
像许多新兴技术一样，电动汽车的开发和应用已经存在了很长时间，但直到最近，技术还没有真正起飞。尽管HEV是汽油车的良好替代品，并被媒体广泛宣传，但它只是作为中间步骤或近期解决方案的代表。政府法规和环境前景，特别是推动运输电气化的采用。电动车将是最终目标。事实上，随着OEM到2012年为终端消费者推出更多的电动汽车模型，电动汽车的展示将被广泛认可和认可。随着新型电动汽车的发展，同时也将引进电力电子技术相关技术的巨大机遇。利用这个机会，为绿色发展做出贡献。
汽车专业英语42ChargingSystem充电系统
大部分服务部门不修复发电时，因为耗时太多，并且还需要专用设备。
The battery's function is to provide electrical energy for many of the systems and components in the car. 3．电压调节器可以防止过充电。
Voltage regulators can prevent over charging.
4.2 Charging System
Part Four: Practice
V. Translate the following sentences into English. 1．最常用的充电指示器是简单的开关警告灯。充电系统包括 蓄电池、发电机、电压调节器和充电报警或指示灯等。
The most commonly used charging indicator is a simple switch warning lamp. The charging system includes a battery, a generator, a voltage regulator, a charging alarm, or an indicator light and so on. 2．蓄电池的功能是为汽车中的许多系统和部件提供电能。
Too much tension can overload the alternator's bearings and shorten the unit's life, while too little tension may allow the belt to slip.
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文献出处:Pollet G. The research of electric car charging system and controller [J]. Electrochimica Acta, 2015, 5(3): 235-249.原文The research of electric car charging system and controllerPollet GAbstractThis paper puts forward the whole bridge main circuit topology and PWM control method effectively improves the reliability of the charging system and efficiency. Put forward and realized based on digital signal processing chip controller circuit intelligent PI control algorithm and variable parameters, significantly improve the control precision of the charging system voltage, current and response characteristics. Double proposes a CAN bus and RS - 485 bus communication network, realized the distributed control of the process of charging, the charging operation is flexible and reliable. Due to be able to provide a communication interface to battery management system and algorithm, charging system according to the state change of battery charging mode, optimizing the charging mode. The success of the charging system has important theoretical significance and engineering value. Keywords: Electric cars; Charging system, PWM, Intelligent PI, Distributed control 1 IntroductionElectric car, it is all or part of the electric drive system of power car, compared with conventional cars powered by gasoline as, electric cars in such aspects as environmental protection, clean, energy-saving occupy obvious advantages. Now each big international automobile manufacturer have invested a lot of money and manpower to electric car research and development, a variety of the electric car prototype appeared frequently, some have reached high industrialization scale. Now the development of the electric car industry has formed a hybrid vehicles, pure battery-powered electric vehicles (electric cars) and three main direction of fuel cell electric vehicles. Pure electric vehicle itself is not harmful gas emissions, can make full use of surplus power in the evening, improve the efficiency of energy utilization, and improve the economic benefit. Pure electric vehicles completely eliminateemissions of the vehicle running, fully use of secondary energy electricity, in line with the energy sustainable utilization strategy, along with the progress of the technical level, the pure electric vehicles has a broad development prospects. But at present, the development of the battery and charging system can't satisfy the requirement of electric cars, there are some theoretical and technical problems have yet to be research, serious lack of relevant standards and norms, has become the bottleneck of affecting the development of electric vehicles.2 The current situation of the electric vehicle charging systemAt the beginning of last century, as the secondary battery research is successful, and matching charging system arises at the historic moment. The charging system using the conventional charging method, which is USES small current for a long time to recharge battery. This way of charge due to the charging time is too long, can not meet the requirement of the electric cars and so on, the demand of the quick charge. Widely at home and abroad to carry out the study of fast charging system. Fast charging system produce roughly experienced three stages of development:(l) Groping stageIs the earliest in the 50 s of the last century, the United States as a result of the need of military, began to study fast charging technology, made the metal rectifying shape fast charging system, for 6 to 24 v lead-acid battery quick charging, the weight of 40 kg, have fast, medium and slow three charging modes.(2) The theory research stage1967 U.S. troops (Mas) have bubbles in the process of charging is studied, find the reason and law of gas, on the premise of minimum gas rate and find out the maximum charging current of battery can accept and acceptable charging current curve, discusses the theory of quick charge battery, and on the basis of practice, put forward the basic rules of quick charge battery.(3) The practical application stageMcCulloch electronic companies in the United States in 1970 made the lead-acid battery quick charging system, for 500A to 190AH battery charging current, and in 1200A discharge to deal with the polarization current for short periods of time, theresults 30 minutes to put the battery is good. In addition to the United States, such as Japan, other countries such as Britain, France, Germany, the former Soviet Union also has different degree of development in rapid charging technology. Britain's associated company invented "TEC total energy intelligent charging control technology" and its control system, effectively control the powder charging when the amount of energy needed, overcome existing corona charging system and friction type charging system caused various problems, to solve the "Faraday shielding effect" and "reverse ionization effect" and so on.At present the batteries of electric cars in use process, because of the limitation of the voltage of the power battery energy and need to adopt more battery in series combination, and power battery characteristics of highly nonlinear, individual difference is very big, therefore become the electric car battery management system, a necessary device. The most basic function of BMS is to monitor the working state of the battery (voltage, current and temperature of the battery), prediction of power battery (SOC) of battery capacity, battery management to avoid over discharge, overcharge, overheating and serious imbalance between monomer battery voltages, maximize battery storage capacity and cycle life.Current of the electric vehicle charging system is not very good with a serious defect currently has been relatively mature and supporting the use of on-board BMS system, charging system is either not provide communication interface with BMS, or communication interface is not compatible with popular now BMS interface. BMS system has the most comprehensive, full of battery state of real-time data, if you can provide the charging system and its communication interface, can fundamentally solve the current charging system in the process of charging the battery status change resulting in without understanding the state of the battery charged blindly charging, thus reduce battery life.In addition, as the core of the electric vehicle charging system, the existing charging controller, the control process are mostly based on analog signal processing, and its control structure is a centralized control structure. The traditional charging system boundary is not clear, complex structure and each subsystem is unitized degreeis very low. Its applied electromagnetic environment, all kinds of high frequency signals could easily lead to serious interference of microcomputer control charging system failure. In the past, often using analog signal for each signal transmission is between the control systems. Various kinds of interference signal into analog signals, it is easy to lead to failure of the control system, its structure and the process may not apply to the requirement of the distributed control and the whole process of the digital processing requirements.3 The function of the electric vehicle charging system requirementsThe charging system in addition to providing communication interface with BMS, received by the BMS battery status parameters of transfer function, extract energy from power supply and charging system is passed to the battery in the right way, so as to set up between power supply and battery power conversion interface. Charging system is usually performed by the power conversion unit and process control of controller. The basic properties of the charging system requirements include the following:Security: electric vehicle charging, how to ensure that personnel's personal safety and the safety of the battery is very important. Easy to use: charging system should have high intelligence, operators don't need too much intervention in the charging process. Cost economy: economic and cheap charging system helps to reduce the cost of the whole electric cars, improve operation efficiency, and promote the commercialization of electric vehicles. High efficiency: efficiency is one of the most important requirements for modern charging system; the efficiency of the energy efficiency of high and low for the electric car has a huge impact. Low pollution to the power supply: the power electronic technology of the charging system is a kind of highly nonlinear devices, will produce harmful to the supply network and other electrical equipment of the harmonic pollution, moreover, because of the charging system power factor is low, the charging system load increases, its effect on the supply network also not allow to ignore.4 EV charging method4.1 Constant current chargingIn the whole process of charging and is always with constant current for rechargeable battery. In this way, to ensure that in the later stages of charging without a lot of gas, therefore can only use small current charging, so need a long time, the charging method has the advantage of simple operation, the current is too small, but in the beginning in the late charge and charging current is too large, charging time is long.4.2 Constant voltage chargingEarly charging current is quite large, as the charge and current decreases. For more battery discharge, the initial charging current is too large in order to protect cells from damage, at the beginning of the charging to limited flow measures to avoid the charging current is too large. Compared with constant current charging, the battery is not easy to calculate.4.3 Constant voltage charging current limitingTo remedy constant-voltage charging shortcomings, is widely used in constant voltage current limiting method. Set the maximum charging current, at the beginning of the charge, when the current exceeds the limit of flow value, with the current limiting value, when the current less than the current limit value, constant voltage charging. Thus automatically adjust the charging current, does not exceed a certain limit, the charging current is controlled in the early.4.4 Constant voltage charge after constant currentThis method is a combination of constant current charging and constant voltage charge, the previous constant current charging and accounting period of constant voltage charging way, on the one hand to avoid the constant voltage charging current is too large, in the early late again on the other hand to avoid the constant current charging phenomenon.4.5 Charge attenuationIn the process of charging, with the increase of voltage of the battery, charging current attenuation of charging method gradually. This is a kind of ideal charging method; charge saves time and prevents the sulfuric acid stratification and the plate vulcanizing. But this charging method implementation requires more complex control,compared with the constant current charging; the charging amount is not easy to estimate. Due to the battery and nonlinear dispersion, complexity, the problems in the process of charging, the battery charging has become a more complex issue. The traditional charging method is used to charging very troublesome, because often be charging for 10 hours, and in the process of charging must be manned. Quick charge is the problem to be solved in the process of charging current control, in the process of charging, if the charging current is not enough, to reach the purpose of quick charge. If the charging current is too large and will cause a large number of precipitation of gas, electrolyte temperature will rise quickly, easy to cause the battery plate is damaged, shorten the battery life. Also in the process of charging battery monomer battery consistency of difference, this factor must be fully considered.译文电动汽车充电系统及控制器研究Pollet G摘要本文提出了全桥的主电路拓扑结构和PWM的控制手段，有效的提高了充电系统的可靠性和效率。