电源学报2024，Vol.22Issue(2)：205-215,11.DOI:10.13234/j.issn.2095-2805.2024.2.205
动力锂离子电池组均衡策略研究
Research on Equalization Strategy for Power Lithium-ion Batteries
摘要
Abstract
To effectively reduce the inconsistency of series lithium-ion batteries in use,a novel equalization topolo-gy with the combination of a Cuk equalizer and a double-layer selector switch is proposed,which can quickly realize the energy transfer between any single cells and improve the equalization speed.According to the characteristics of the open circuit voltage(OCV)-state-of-charge(SOC)curve,piecewise equalization is adopted with voltage and SOC as equaliza-tion variables,and a fuzzy logic control(FLC)algorithm is designed to dynamically adjust the equalization current to re-duce the equalization time and energy loss.Matlab/Simulink software is used to build a model and conduct simulations.Experimental results show that the energy transfer topology proposed in this paper saves of the equalization time by 22.17％compared with the traditional topology of energy transfer between adjacent cells of Cuk circuit.In addition,com-pared with the mean difference algorithm,the FLC algorithm improves the time efficiency by more than 30％and the en-ergy efficiency by about 11％under static and charge-discharge conditions.Therefore,the feasibility of the proposed e-qualization scheme is verified.关键词
模糊逻辑控制/电池均衡/Cuk电路/荷电状态/均衡效率/能量损耗Key words
Fuzzy logic control(FLC)/battery equalization/Cuk circuit/state-of-charge(SOC)/equalization efficien-cy/energy loss分类
信息技术与安全科学引用本文复制引用
齐火箭,张新瑞,王嘉宏,徐海宾,张捷靖..动力锂离子电池组均衡策略研究[J].电源学报,2024,22(2):205-215,11.基金项目
国家自然科学基金资助项目(52007102) （52007102）
国网冀北电力有限公司科技资助项目(SGJBZJ00YXJS1901252)This work is supported by National Natural Science Foundation of China under the grant 52007102 （SGJBZJ00YXJS1901252）
Science and Technology Project of State Grid Jibei Electric Power Co.,Ltd.under the grant SGJBZJ00YXJS1901252 （）
