摘要
针对锂电池数量多、不一致性较严重的问题,提出一种结合模糊控制理论的DC/DC双向主动均衡电路拓扑。以荷电状态(SOC)为均衡判断依据,采用均值-差值法进行主动均衡,实现了单个单体电池的均衡以及多个单体电池间的交替均衡。仿真结果表明,所提电池主动均衡策略可以有效改善多个电池的不一致性问题,且拥有较快的均衡速度,有效地实现了电池间的SOC主动均衡。
A DC/DC bidirectional active equalization circuit topology combined with fuzzy control theory is proposed for the problems of large number of lithium cells and serious inconsistency. Taking the state of charge(SOC) as the basis for equalization judgment, the mean-difference method is used to carry out active equalization, which realizes the equalization of a single cell and the alternate equalization between multiple single cells. The simulation results show that the proposed cell active equalization strategy can effectively improve the inconsistency of multiple cells and has a fast equalization speed, which effectively realizes the active SOC equalization among cells.
作者
王津
王文斌
WANG Jin;WANG Wenbin(School of Advanced Technology,Xi’an Jiaotong-Liverpool University,Suzhou 215028,China;Wenzhou Delixi Group Co.,Ltd.,Wenzhou 325604,China)
出处
《电机与控制应用》
2022年第10期40-45,共6页
Electric machines & control application
关键词
锂电池
模糊控制理论
DC/DC双向主动均衡
荷电状态
均值-差值法
lithium cell
fuzzy control theory
DC/DC bidirectional active equalization
state of charge
mean-difference method
