电子科技2024，Vol.37Issue(4)：16-24,9.DOI:10.16180/j.cnki.issn1007-7820.2024.04.003
电动汽车锂电池组双层环形均衡器研究
Research on Double Layer Ring Equalizer for Lithium Battery Pack of Electric Vehicle
摘要
Abstract
The traditional Buck-Boost equalization circuit has long transmission path and low equalization effi-ciency,and the existing ring equalizer cannot fundamentally solve this problem.In view of this problem,a double-layer ring equalizer for lithium battery based on Buck-Boost and switched capacitor is proposed in this study.The e-qualization circuit adopts modular balancing method,and adopts Buck-Boost and switching capacitor hybrid circuit to achieve equalization in the bottom module and top module.The circuit structure is analyzed from two aspects of e-qualization speed and efficiency by graph theory analysis.The results show that the equalization circuit has the advan-tages of less energy transmission paths and high energy transmission efficiency.The simulation model of the equaliza-tion circuit is built on the MATLAB/Simulink power simulation platform.The simulation results show that the equali-zation speed of the double-layer ring equalizer based on Buck-Boost and switched capacitor is 46%higher than that of the single-layer ring equalizer.Additionally,an experimental prototype of four batteries is established to ver-ify the working principle and system equalization efficiency of the ring equalization circuit.The experimental results show that the equalization efficiency of the double-layer ring equalizer is 26.78%higher than that of single-layer ring equalizer.The simulation and experimental results are consistent with the theoretical analysis,which indicates that the circuit structure is reasonable and effective.关键词
锂电池/环式结构/均衡器/图论法/概率论/双向环式/混合拓扑/双层结构/串联电池组Key words
lithium battery/ring structure/equalizer/graph theory/probability theory/two way ring type/hybrid topology/double layer structure/series battery pack分类
信息技术与安全科学引用本文复制引用
韩欣晟,阚加荣,凌慧颖,王鹏,成乾..电动汽车锂电池组双层环形均衡器研究[J].电子科技,2024,37(4):16-24,9.基金项目
国家自然科学基金(51577164) （51577164）
江苏省普通高校研究生实践创新计划(SJCX21_1522)National Natural Science Foundation of China(51577164) （SJCX21_1522）
Post-graduate Practice and Innovation Plan of Jiangsu(SJCX21_1522) （SJCX21_1522）
