动力锂电池组均衡拓扑研究综述  

Review of power lithium battery pack equalization topology

作　　者：巫春玲[1] 刘智轩 程琰清 胡雯博 Wu Chunling;Liu Zhixuan;Cheng Yanqing;Hu Wenbo(College of Electronic and Control Engineering,Chang′an University,Xi'an 710000,China)

机构地区：[1]长安大学电子与控制工程学院,西安710000

出　　处：《电子测量技术》2021年第15期7-14,共8页Electronic Measurement Technology

基　　金：国家自然科学基金-青年基金项目(61701044);陕西省重点研发计划项目(2019ZDLGY15-04-02)资助。

摘　　要：首先对动力锂电池组的常见均衡方式进行了对比分析。然后定量分析了基于串联的电池-电池均衡拓扑、基于模块的电池-电池均衡拓扑、基于分层的电池-电池均衡拓扑、基于串联的电池-电池组均衡拓扑、基于模块的电池-电池组均衡拓扑等5种类型均衡拓扑的能量流动。最后以基于模块的电池-电池均衡拓扑为例搭建了8节串联锂电池的仿真模型,实验结果表明经过3.2 s的时间电池组完成了模块内的均衡,经过6.1 s的时间电池组完成了模块间的均衡,经过66.5 s的时间电池组中的8节电池全部均衡完成,荷电状态SOC都达到了100%,验证了基于模块的电池-电池均衡拓扑的均衡速度快且均衡效率高。Firstly,different kinds of power lithium battery pack equalization topologies are compared and analyzed in this paper.Then the energy flow in five cell balancing models is analyzed quantitatively,they are series-based cell-cell,module-based cell-cell,layer-based cell-cell,series-based cell-pack and module-based cell-pack.Finally,according to the topology of module-based cell-cell,the simulation model of eight lithium batteries in series is built.The results show that after 3.2 s,the equalization within the module is completed,after 6.1 s,the equalization among the modules is completed,after 66.5 s,all the eight batteries’balancing in the battery pack are finished,and their SOC are 100%.It is verified that the module-based cell-cell equalization topology has fast balancing speed and high efficiency.

关 键 词：电池均衡 均衡拓扑 能量流动 

分 类 号：TM911[电气工程—电力电子与电力传动]