摘要
提出一种基于移相控制策略的改进型Buck/Boost均衡器,能实现各电池单元之间的能量流动,不仅解决了传统Buck/Boost均衡器均衡路径长、均衡效率低的问题,还减少了均衡器元件的数量。在研究该均衡器工作原理的基础上,重点推导了各电池单元的等效均衡电流(均衡路径)表达式。并搭建8节锂电池的仿真模型和实验样机对工作原理和控制策略进行验证。结果表明改进型Buck/Boost均衡器缩短了均衡路径,提高了均衡效率。
An improved Buck/Boost equalizer based on phase shift control strategy is proposed to realize the energy flow between the battery cells.The disadvantages of long equalization paths and low efficiency of the traditional Buck/Boost equalizers can be overcome.In addition,the number of components required by the equalizer is reduced.The operation principle of the equalizer is analyzed and the formulas for the equivalent equalization current(equalization path) of each battery cell are derived.Simulation model and experimental prototype of an 8-cell lithium battery are built to verify the operation principle and control strategy.Results show that the improved Buck/Boost equalization circuit has better performances on equalization path optimization and efficiency improvement.
作者
刘俊
阚加荣
成乾
叶磊
LIU Jun;KAN Jia-rong;CHENG Qian;YE Lei(Yancheng Institute of Technology,Yancheng 224051,China;不详)
出处
《电力电子技术》
CSCD
北大核心
2022年第6期41-44,共4页
Power Electronics
基金
国家自然科学基金(51577164)
江苏省普通高校研究生实践创新计划(SJCX21_1522)。
关键词
锂电池
能量
均衡器
移相控制
lithium battery
energy
equalizer
phase shift control
