基于Delta型准谐振开关电容的锂电池组电压均衡电路  

Voltage equalization circuit based on delta-structured quasi-resonant switched-capacitor for lithium battery pack

作　　者：文楚强 赵世伟[1] Wen Chuqiang;Zhao Shiwei(School of Electric Power,South China University of Technology,Guangzhou 510641,China)

机构地区：[1]华南理工大学电力学院,广东广州510641

出　　处：《电子技术应用》2020年第5期97-101,共5页Application of Electronic Technique

基　　金：广东省自然科学基金(2016A030313464);广东省科技计划项目(2019B090910001)。

摘　　要：基于开关电容的串联电池组电压均衡电路因其电路结构简单、均衡精度高等特点被广泛研究。Delta型开关电容均衡电路,可以实现周期内任意两个不均衡电池单元之间的能量转移,均衡速度快。通过加入谐振电感的方式,使得开关管工作在零电流开关模式,降低了开关管的开关损耗,还进一步提高了电路的均衡速度。The voltage equalization circuit of series-connected battery pack based on switched-capacitor is widely researched because of its simple circuit structure and high equalization precision.Delta-structured switched-capacitor equalizer can realize energy transfer between any two unbalanced-cells cycle by cycle,so it has fast balancing speed.In this paper,through the way of adding the resonant inductors,makes the switch work in zero current switching mode,reduce the switching loss,and further improve the speed of the circuit balancing.

关 键 词：电压均衡 开关电容 谐振电感 零电流开关 

分 类 号：TM912[电气工程—电力电子与电力传动]