多模式超级电容充电电路设计.

论文题目：多模式超级电容充电电路设计

专业：微电子学

本科生：珏萱（签名）___________

指导教师：师之授（签名）___________

摘要

超级电容是一种介于传统电容器与蓄电池之间新型储能设备，具有可快速充电、大容量、工作温度范围宽、节能环保、寿命长等优点。因此各国都加大了对超级电容的研究力度，被广泛应用于消费电子、太阳能发电、后备电源等方面，尤其是在电动汽车领域的研究应用受到全球的广泛关注。如何快速高效的给超级电容进行充电，成为了新的研究的热点，本论文结合相关研究结果对多模式充电电路的整体设计方案进行了分析和设计。

目前对超级电容进行充电的方式主要有恒流充电、恒功率充电、恒流转恒压充电、脉冲电流充电以及恒压充电等。本论文结合国内外对超级电容充放电原理及特性的研究结果，设计了具有恒流、恒功率以及恒压三种组合转换模式的充电电路，硬件电路包括Buck变换电路、PWM波驱动控制电路、充电模式控制电路，在对超级电容进行充电的同时，通过采样电路，将采样信号反馈给控制电路，实现三种充电模式转换，这样可以有效的解决在单一充电模式下的不足之处，在一定程度上提高超级电容的充电效率。

对所设计的多模式充电电路的输出电流、输出电压等参数进行了测试，所得到的测试结果表明，多模式充电电路能够实现三种充电模式组合转换，达到预期的设计要求。

关键词：超级电容，Buck变换器，PWM，多模式充电

Subject: Multi-Mode Super capacitor charging circuit design

Specialty: Microelectronics Science and Engineering

Name: JueXuan (Signature) ___________ Instructor: ShiZhishou (Signature) ___________

ABSTRACT

Super capacitor is a range of new energy storage device between conventional capacitors and batteries, it has a fast charge, high-capacity, wide operating temperature range, energy saving, long life advantages. So countries have increased the research efforts of the super capacitor, it is widely used in consumer electronics, solar power, backup power and other aspects, especially all around the world is concerned about the field of electric vehicles application widely. How to quickly and efficiently charge the super capacitor, has become a new focus of research, this article combines research results on the multi-mode charging circuit design scheme and design are analyzed.

Currently the super capacitor is charged mainly constant current charging mode, constant power charge, the constant flow of constant voltage charging, pulse current charging and constant voltage charging. Currently the super capacitor is charged mainly constant current charging mode, constant power charge, the constant flow of constant voltage charging, pulse current charging and constant voltage charging. Hardware circuit includes a Buck conversion circuit, PWM wave drive control circuit, the charging mode control circuit, At the same time the super capacitor is charged, by sampling circuit, the sampling signal back to the control circuit, converting three charge modes, which can effectively solve the shortcomings in a single charging mode, to some extent, improve the super capacitor charging efficiency.

The design of multi-mode charging circuit output current, output voltage and other parameters were tested, the test Results show that the multi-mode charging circuit can achieve three charging modes to convert combination to achieve the desired design requirements.

Key words: super capacitance, buck converter, PWM, multi-mode charge