电动汽车充电系统及控制器外文文献翻译最新译文

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 controller

Pollet G

Abstract

This 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 Introduction

Electric 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 eliminate

emissions 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 system

At 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 stage

Is 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 stage

1967 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 stage

McCulloch 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, the