锂离子电池系统均衡策略研究进展

doi:10.3901/JME.2022.24.145

摘要/Abstract

摘要： 相比电池单体，成组后电池系统的容量、寿命和安全性均会大幅度下降，其原因在于内部参数和外部环境导致的不一致性问题。因此，需要均衡管理系统保障电池的一致性，其中均衡策略是关键之一。从均衡动机、均衡目标、均衡算法和均衡策略评价四方面，对国内外电池均衡策略研究进展进行了综述。首先深入分析电池组一致性影响因素，确定均衡动机。其次，从均衡目标出发，总结了电池组、电路和多目标融合三方面研究进展。再次，根据不同的算法分类详细阐述均衡算法。之后，对均衡策略的评价进行总结并提出一种新的评价方法。最后，系统梳理了目前亟待解决的均衡技术关键问题，对未来均衡策略的研究进行了展望。

关键词: 均衡策略, 均衡动机, 均衡目标, 均衡算法, 均衡策略评价

Abstract: Compared to battery cells, the capacity, life and safety of the battery system will be significantly reduced after forming a group, which is due to the inconsistency problem caused by internal parameters and external environment. Therefore, an equalization management system is needed to guarantee the consistency of the battery, of which the equalization strategy is one of the keys. The research progress of battery equalization strategy at home and abroad is reviewed from four aspects:equalization motivations, equalization objectives, equalization algorithms and equalization strategies evaluation. Firstly, the battery pack consistency influencing factors are analyzed in depth to determine the equalization motivations. Secondly, from the equalization objectives, three research advances in battery pack, circuit and multi-objective fusion are summarized. Again, the equalization algorithms are elaborated according to different algorithm classifications. After that, the evaluation of the equalization strategies are summarized and a new evaluation method is proposed. Finally, the key problems of the current equalization technology that need to be solved are systematically sorted out, and the next research on equalization strategies are prospected.

Key words: equalization strategies, equalization motivations, equalization objectives, equalization algorithms, evaluation of equalization strategies

中图分类号:

TM912

钱广俊, 韩雪冰, 卢兰光, 孙跃东, 郑岳久. 锂离子电池系统均衡策略研究进展[J]. 机械工程学报, 2022, 58(24): 145-162.

QIAN Guangjun, HAN Xuebing, LU Languang, SUN Yuedong, ZHENG Yuejiu. Advances in Lithium-ion Battery System Equalization Strategy Research[J]. Journal of Mechanical Engineering, 2022, 58(24): 145-162.

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