基于电力调频的串联锂离子电池组均衡技术分析

doi:10.12028/j.issn.2095-4239.2019.0011

储能科学与技术 ›› 2019, Vol. 8 ›› Issue (3): 468-476.doi: 10.12028/j.issn.2095-4239.2019.0011

基于电力调频的串联锂离子电池组均衡技术分析

李佳娜^1,2, 刘丹丹^2,3, 朱峰², 谢晨², 侯洋⁴, 陈永翀^2,3

1 中国矿业大学 (北京) 机电与信息工程学院, 北京 100083;
2 中国科学院电工研究所, 北京 100190;
3 中国科学院大学, 北京 100049;
4 北京好风光储能技术有限公司, 北京 100085

收稿日期:2019-02-12 修回日期:2019-03-24 出版日期:2019-05-01 发布日期:2019-03-25
通讯作者: 陈永翀,研究员,研究方向为新型储能材料与电池技术,E-mail:ycchen@mail.iee.ac.cn
作者简介:李佳娜(1992-),女,硕士研究生,研究方向为储能电池系统技术,E-mail:jianalee@mail.iee.ac.cn
基金资助:
国家自然科学基金（51707181、51707188），北京市自然科学基金-海淀原始创新联合基金（L172044）。

Analysis of equalization technology of series lithium-ion battery pack based on power frequency modulation

LI Jiana^1,2, LIU Dandan^2,3, ZHU Feng², XIE Chen², HOU Yang⁴, CHEN Yongchong^2,3

1 School of Mechanical Electronic Information and engineering, China University of Mining & Technology(Beijing), Beijing 100083, China;
2 Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China;
3 University of Chinese Academy of Sciences, Beijing 100049, China;
4 Beijing HAWAGA Power Storage Technology Company Ltd., Beijing 100085, China

Received:2019-02-12 Revised:2019-03-24 Online:2019-05-01 Published:2019-03-25

摘要/Abstract

摘要： 近年来，锂离子电池在储能电站调频领域得到了飞速发展。为满足调频电站的电压和功率要求，需将大量电池单体进行串联，如此产生的电池组串联不一致性问题，以及调频过程中高倍率和频繁切换充放电状态对不一致性程度的加剧，严重影响电池组的使用寿命和安全性能。针对上述问题，本文基于调频储能串联锂离子电池模组不一致性问题的形成原因，归纳分析用于改善电池组串联不一致性问题的均衡技术和均衡策略。其中，均衡拓扑结构按能量流向角度进行分类梳理，均衡控制策略则基于均衡的不同目标进行优劣分析。在此基础上对锂离子调频电池模组均衡技术的发展趋势进行展望。

关键词: 调频储能, 串联电池组, 高倍率, 不一致性, 均衡技术

Abstract: Lithium-ion batteries have gained rapid development in the feld of frequency regulation of energy storage power stations. In order to meet the voltage and power requirements of the frequency modulation power station, a large number of battery cells need to be connected in series, then battery cells imbalance problem may occur. Moreover, the high rate and frequent switching of the charge and discharge state of battery packs in the frequency modulation process increase the degree of inconsistency, which seriously affects the cycle life and safety performance of the battery packs. In view of the problems mentioned above, this paper summarizes the causes of the inconsistency problem of series-connected lithium-ion battery packs, and evaluates the strategies which are used to improve the consistency of the battery packs. Among them, the balancing topologies are sorted according to the energy flow, while the balancing strategies are based on the different objectives. On this basis, the development trend of equalization technology for lithium-ion frequency modulation battery packs is prospected.

Key words: frequency modulation energy storage, series-connected lithium-ion battery packs, high rate, inconsistency, equalization technology

中图分类号:

TM912

李佳娜, 刘丹丹, 朱峰, 谢晨, 侯洋, 陈永翀. 基于电力调频的串联锂离子电池组均衡技术分析[J]. 储能科学与技术, 2019, 8(3): 468-476.

LI Jiana, LIU Dandan, ZHU Feng, XIE Chen, HOU Yang, CHEN Yongchong. Analysis of equalization technology of series lithium-ion battery pack based on power frequency modulation[J]. Energy Storage Science and Technology, 2019, 8(3): 468-476.

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基于电力调频的串联锂离子电池组均衡技术分析

Analysis of equalization technology of series lithium-ion battery pack based on power frequency modulation

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