基于落差式组合策略的串联锂离子电池组均衡方案

doi:10.12028/j.issn.2095-4239.2018.0179

储能科学与技术 ›› 2019, Vol. 8 ›› Issue (1): 167-172.doi: 10.12028/j.issn.2095-4239.2018.0179

基于落差式组合策略的串联锂离子电池组均衡方案

王敏旺^1,2, 吴华伟^1,2, 戈小中³

1 湖北文理学院纯电动汽车动力系统设计与测试湖北省重点实验室, 湖北襄阳 441053;
2 湖北文理学院汽车与交通工程学院, 湖北襄阳 441053;
3 东风襄阳旅行车有限公司, 湖北襄阳 441000

收稿日期:2018-09-05 修回日期:2018-09-28 出版日期:2019-01-01 发布日期:2019-01-01
通讯作者: 吴华伟,副教授,研究方向为机电系统设计故障诊断与健康管理,E-mail:whw_xy@163.com。
作者简介:王敏旺(1986-),男,硕士,助教,研究方向为新能源汽车电池组管理及驱动电机控制,E-mail:wmw.king@163.com。
基金资助:
湖北省技术创新专项重大项目（2017AAA133），"机电汽车"湖北省优势特色学科群开放基金项目（XKQ2018002）。

Equalization scheme for series connected Li-ion battery pack based on drop combination strategy

WANG Minwang^1,2, WU Huawei^1,2, GE Xiaozhong³

1 Hubei Key Laboratory of Power System Design and Test for Electrical Vehicle, Hubei University of Arts and Science, Xiangyang 441053, Hubei, China;
2 School of Automotive and Traffic Engineering, Hubei University of Arts and Science, Xiangyang 441053, Hubei, China;
3 Dongfeng Xiangyangtouring Car Co. Ltd, Xiangyang 441000, Hubei, China

Received:2018-09-05 Revised:2018-09-28 Online:2019-01-01 Published:2019-01-01

摘要/Abstract

摘要： 为了提升飞渡电容式均衡方法的速度和效率，提出了建立电压落差的充放电组合策略，分析了落差式组合策略与常规方案的工作过程，对比了二者均衡速度的差异，将均衡电路等效为完全响应的RLC电路，通过公式推导及Matlab计算，分析了能量损失率与电路参数的关系，对比了不同充放电组合对均衡效率的影响。研究表明：落差式组合策略可显著提升飞渡电容式均衡速度，并且可以通过优化充放电组合，提升均衡效率。通过实验对所提出的方案进行了分析与验证，结果表明，该方法能有效解决电池组不均衡问题。

关键词: 飞渡电容, 组合式, 均衡速度, 均衡效率

Abstract: In order to improve the speed and efficiency of the capacitive equalization method, a charge-discharge combination strategy for establishing voltage drop is proposed. The working process of the combination strategy and the conventional scheme is analyzed. The difference of equalization speed between the two schemes is compared. The equalization circuit is equivalent to the full-response RLC circuit. The relationship between energy loss rate and circuit parameters is analyzed by formula deduction and Matlab calculation. The effect of different charge-discharge combinations on equalization efficiency is compared. The results show that the drop combination strategy can significantly improve the speed of capacitive equalization, and the equalization efficiency can be improved by optimizing the charge-discharge combination. The proposed scheme is analyzed and verified by experiments. The results show that the method can effectively solve the problem of unbalanced battery pack.

Key words: flying-capacitor, combined type, equilibrium velocity, equilibrium efficiency

中图分类号:

TM912

王敏旺, 吴华伟, 戈小中. 基于落差式组合策略的串联锂离子电池组均衡方案[J]. 储能科学与技术, 2019, 8(1): 167-172.

WANG Minwang, WU Huawei, GE Xiaozhong. Equalization scheme for series connected Li-ion battery pack based on drop combination strategy[J]. Energy Storage Science and Technology, 2019, 8(1): 167-172.

参考文献

[1] 鲁文凡, 吕帅帅, 倪红军, 等. 动力电池组均衡控制系统的研究进展[J]. 电源技术, 2017, 41(1):161-164. LU W F, LÜ S S, NI H J, et al. Research progress of equalization strategy system for power batteries[J]. Chinese Journal of Power Sources, 2017, 41(1):161-164.
[2] 徐顺刚, 王金平, 许建平. 一种延长电动汽车蓄电池寿命的均衡充电控制策略[J]. 中国电机工程学报, 2012, 32(3):43-48. XU S G, WANG J P, XU J P. An equalizing charge control strategy to extend battery cycle life for electric vehicles[J]. Proceedings of the CSEE, 2012, 32(3):43-48.
[3] 谢凯, 潘明, 张向文. 电动汽车动力电池主动均衡控制设计[J]. 计算机仿真, 2017, 34(6):156-161. XIE K, PAN M, ZhANG X W. Design of active equalization control for electric vehicle power battery[J]. Computer Simulation, 2017, 34(6):156-161.
[4] 熊亮. 大功率锂电池组多通道主动均衡技术研究[D]. 绵阳:西南科技大学, 2016. XIONG L. Research on multichannel active equalization technology for high power lithium battery[D]. Mianyang:Southwest University of Science and Technology, 2016.
[5] 刘倩怡, 徐顺刚, 许建平, 等. 一种基于推挽变换器的模块化电池均衡电路[J]. 电工技术学报, 2018(14):doi:10.1959/j.cnki. 1000-6753.tces.170659. LIU Q Y, XU S G, XU J P, et al. A modularized equalizer for series-connected batteries based on push-pull converter[J]. Transactions of China Electrotechnical Society, 2018(14):doi:10.1959/j.cnki.1000-6753.tces.170659.
[6] KIM M Y, KIM C H, KIM J H, et al. A chain structure of switched capacitor for improved cell balancing speed of lithium-ion batteries[J]. IEEE Transactions on Industrial Electronics, 2014, 61(8):3989-3999.
[7] 冯能莲, 陈龙科, 汤杰. 串联电池组电容式均衡系统研究[J]. 重庆理工大学学报, 2016, 30(1):1-6. FENG N L, CHEN L K, TANG J. Study on capacitive equalizing system for series battery[J]. Journal of Chongqing Institute of Technology, 2016, 30(1):1-6.
[8] 李泉, 周云山, 王建德, 等. 基于双层准谐振开关电容的锂电池组均衡方法[J]. 电工技术学报, 2017, 32(21):9-15. LI Q, ZHOU Y S, WANG J D, et al. Equalization method of lithium battery pack based on double-tiered quasi-resonant switched capacitor[J]. Transactions of China Electrotechnical Society, 2017, 32(21):9-15.
[9] 逯仁贵, 王铁成, 朱春波, 等. 基于飞渡电容的超级电容组动态均衡控制算法[J]. 哈尔滨工业大学学报, 2008, 40(9):1421-1425. LU R G, WANG T C, ZHU C B, et al. Dynamic equalization algorithm based on switched capacitor applied in super-capacitor stacks[J]. Journal of Harbin Institute of Technology, 2008, 40(9):1421-1425.
[10] 李仲兴, 余峰, 郭丽娜. 电动汽车用锂电池组均衡控制算法[J]. 电力电子技术, 2011, 45(12):54-56. LI Z X, YU F, GUO L N. Lithium-ion batteries equalization algorithm of electric vehicle[J]. Power Electronics, 2011, 45(12):54-56.
[11] 夏小东. 带有升降压变换器的飞渡电容式电池组均衡技术研究[D]. 哈尔滨:哈尔滨工业大学, 2011. XIA X D. Research on battery equalization using flying capacitor with buck-boost converter[D]. Harbin:Harbin Institute of Technology, 2011.
[12] 桂宇. 纯电动汽车锂动力电池组双向均衡控制策略研究及系统开发[D]. 长春:吉林大学, 2014. GUI Y. Research on bidirectional equalization strategy and system development for lithium-ion power battery pack of pure electric vehicle[D]. Changchun:Jilin University, 2014.

基于落差式组合策略的串联锂离子电池组均衡方案

Equalization scheme for series connected Li-ion battery pack based on drop combination strategy

PDF

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 1

编辑推荐

Metrics

本文评价