电子学报 ›› 2016, Vol. 44 ›› Issue (8): 1981-1987.DOI: 10.3969/j.issn.0372-2112.2016.08.030

• 学术论文 • 上一篇    下一篇

锂离子蓄电池组充放电均衡器及均衡策略

刘红锐, 李园专, 陈仕龙, 帅春燕   

  1. 昆明理工大学电力工程学院, 云南昆明 650500
  • 收稿日期:2015-11-16 修回日期:2016-04-18 出版日期:2016-08-25 发布日期:2016-08-25
  • 通讯作者: 陈仕龙
  • 作者简介:刘红锐 女,1982年8月出生,山东德州人.现为昆明理工大学电力工程学院讲师,研究生导师.主要研究方向为电力电子与电力传动、电动汽车电池管理系统.E-mail:liuhongr888@163.com;李园专 男,1991年1月出生,云南昆明人.现为昆明理工大学电力工程学院硕士研究生.主要研究方向为电池管理系统.E-mail:911423161@qq.com
  • 基金资助:
    云南省基金资助项目(No.KKSY201404106);云南省教育厅资助项目(No.2015Y073);国家自然科学基金(No.61562056)

Lithium-ion Battery Charging and Discharging Equalizer and Balancing Strategies

LIU Hong-rui, LI Yuan-zhuan, CHEN Shi-long, SHUAI Chun-yan   

  1. School of Electric Power Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650500, China
  • Received:2015-11-16 Revised:2016-04-18 Online:2016-08-25 Published:2016-08-25

摘要: 本文提出了一种针对锂离子蓄电池组的均衡器,根据电池组充放电状态采取两种不同的均衡策略.当电池组处于充电状态时,对电池组中能量最高的单体电池进行均衡放电,以提高整个电池组的充电容量.当电池组处于放电状态时,对电池组中能量最低的单体电池进行均衡充电,以提高整个电池组的放电容量.均衡器以电感为储能元件,等效的均衡电路为典型的升降压斩波电路和降压斩波电路,均衡电流可控可调.本文详细分析了均衡器的工作原理和均衡策略,同时进行了仿真实验和实际的均衡实验,实验结果均证明了此均衡器的可行性.

关键词: 锂离子电池, 均衡器, 均衡策略, 升降压斩波电路, 降压斩波电路, 均衡实验

Abstract: This paper proposes an equalizer for lithium-ion battery and two different balancing strategies are used according to battery charging and discharging states.In battery charging state,the battery cell with the highest energy is balanced and discharged by the equalizer to improve charge capacity of the whole battery pack.In battery discharging state,the battery cell with the lowest energy is balanced and charged by the equalizer to improve discharge capacity of the whole battery pack.The balancing circuit uses an inductor as the energy storage element and the equivalent balancing circuits are the typical boost-buck chopper circuit and the buck chopper circuit,further the balancing current is controllable and adjustable.This paper draws working principle and control strategies of the equalizer.Furthermore the simulation and actual balancing experiments have been completed.Finally,the feasibility of the equalizer suggested in this paper is verified according to the balancing experimental results.

Key words: lithium-ion battery, equalizer, balancing strategy, boost-buck chopper, buck chopper, balancing experiment

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