基于两级均衡电路的电池组智能均衡方法  

Intelligent Equalization Method of Battery Pack Based on Two-Level Equalization Circuit

作　　者：任子豪 田恩刚 REN Zihao;TIAN Engang(School of Optical Electrical and Computer Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China)

机构地区：[1]上海理工大学光电信息与计算机工程学院,上海200093

出　　处：《电子科技》2024年第7期9-15,共7页Electronic Science and Technology

基　　金：国家自然科学基金(62173231,62003213)。

摘　　要：为解决传统均衡电拓扑均衡效率较低的问题,文中提出了一种两级均衡拓扑结构。该均衡拓扑将电池组分为组内与组间两种形式,组内采用Buck-Boost均衡电路,组间采用可重构均衡电路,组内与组间可同时均衡,提高了均衡效率。以SOC(State of Charge)作为均衡变量,组内均衡算法采用基于SOC的模糊逻辑控制策略,减少均衡时间,提高均衡效率。使用MATLAB/Simulink软件对电路拓扑建模仿真,并与传统Buck-Boost电路进行对比。仿真结果表明,在充放电状态下,相较于传统Buck-Boost电路,所提算法及均衡拓扑使均衡时间减少了约28%,表明该均衡电路及算法具有良好的性能。In order to solve the problem of low efficiency of traditional balanced electric topology,a two-level balanced topology is proposed.This balancing topology divides the battery pack into two forms:Intra-group and inter-group.Buck-Boost equalization circuit is used in the group,and reconfigurable equalization circuit is used between the groups.The intra-group and inter-group can be equalized at the same time,which improves the equalization efficiency.Taking SOC(State of Charge)as the equalization variable,the intra-group equalization algorithm adopts the fuzzy logic control strategy based on SOC to reduce the equalization time and improve the equalization efficiency.MATLAB/Simulink software is used to model and simulate the circuit topology and the results are compared with the traditional Buck-Boost circuit.The simulation results show that compared with the traditional Buck-Boost circuit,the proposed algorithm and equalization topology reduce the equalization time by about 28%under the charge-discharge state,indicating that the equalization circuit and algorithm have good performance.

关 键 词：电动汽车 锂离子电池 电池组均衡 两级均衡电路 模糊逻辑控制 SOC Buck-Boost电路 可重构电路 

分 类 号：TN710[电子电信—电路与系统]