航天器锂离子蓄电池组均衡电路研究  

Equalization Circuit Research of Li-ion Batteries for Spacecraft

作　　者：张晓峰[1] 曾毅[1] 崔波[1] 

机构地区：[1]北京空间飞行器总体设计部,北京100094

出　　处：《航天器工程》2012年第1期72-76,共5页Spacecraft Engineering

基　　金：国家重大科技专项工程

摘　　要：锂离子电池在长期充放电过程中,蓄电池组内各单体电压的离散性会逐渐变大,致使整组电池寿命下降甚至失效,为此航天应用长寿命锂离子电池组必须采用均衡电路。文章对几种常用的锂离子蓄电池组均衡电路作了分析与比较,包括能量耗散型均衡电路和能量非耗散型均衡电路,介绍了其均衡工作原理;从轨道特性的角度总结了航天器电源系统对均衡电路的需求特点,据此分析了恒定分流电阻均衡电路、开关控制分流电阻均衡电路、平均电池电压均衡电路、开关电容均衡电路、DC-DC变换器均衡电路等应用于航天器电源系统的适用性,并给出了各均衡电路的应用分析结论。The voltage of cells in Li-ion batteries will be discrete during charging and discharging processes,with resulting in the battery performances decreased,so equalization circuit is indispensable for space application.The definition and sorts of equalization circuit for Li-ion batteries are introduced in this paper,including energy dissipative type,and non-dissipative type,and the principle of several equalization circuits.The required characteristics of space power system for equalization circuit are summarized according to orbit properties.A variety of equalization circuits,such as dissipative type,non-dissipative type,are analyzed and compared when applied in space power supply system,their advantages and disadvantages are summarized and the conclusion on the applicability of various equalization circuits in space orbit is provided.

关 键 词：航天器 均衡电路 应用分析 

分 类 号：V442[航空宇航科学与技术—飞行器设计] TM912[电气工程—电力电子与电力传动]