应用于动力电池组的积木式结构均衡控制方案

华南理工大学学报(自然科学版) ›› 2012, Vol. 40 ›› Issue (12): 86-91,127.

应用于动力电池组的积木式结构均衡控制方案

赵奕凡¹颜伏伍¹杜常清¹吴友宇¹李铮²骆元²

1．武汉理工大学现代汽车零部件技术湖北省重点实验室，湖北武汉 430070;2．东风汽车公司技术中心，湖北武汉 430056

收稿日期:2012-02-23 修回日期:2012-06-30 出版日期:2012-12-25 发布日期:2012-11-02
通信作者: 赵奕凡(1986-) ，男，博士，主要从事汽车新能源及动力装置研究． E-mail:zhaoyf214@163.com
作者简介:赵奕凡(1986-) ，男，博士，主要从事汽车新能源及动力装置研究．
基金资助:
国家"863”计划项目( 2011AA11A225) ; 中国博士后科学基金资助项目( 20110491226)

Modular Equalization Control Scheme of Power Battery Packs

Zhao Yi-fan¹Yan Fu-wu¹Du Chang-qing¹Wu You-yu¹Li Zheng² Luo Yuan²

1. Hubei Key Laboratory of Advanced Technology of Automobile Parts,Wuhan University of Technology,Wuhan 430070,Hubei,China; 2. Technical Centre of Dongfeng Motor Corporation,Wuhan 430056,Hubei,China

Received:2012-02-23 Revised:2012-06-30 Online:2012-12-25 Published:2012-11-02
Contact: 赵奕凡(1986-) ，男，博士，主要从事汽车新能源及动力装置研究． E-mail:zhaoyf214@163.com
About author:赵奕凡(1986-) ，男，博士，主要从事汽车新能源及动力装置研究．
Supported by:
国家"863”计划项目( 2011AA11A225) ; 中国博士后科学基金资助项目( 20110491226)

摘要/Abstract

摘要： 探讨了单体失衡现象对动力电池组性能的不良影响，分析了常见的均衡策略及其相应的电路结构，提出了积木式结构动力电池组均衡控制方案，结合电池单体端电压与荷电状态之间的对应关系，通过监控单体端电压状态，并根据相邻单体的电压差异做出均衡控制策略的决策判断．针对耗散型均衡及非耗散型均衡两种方案设计了对应的均衡模块，来对磷酸铁锂电池组进行充电、放电两种模式的均衡实验．结果表明，文中方案可对任意节单体组成的动力电池组进行有效的均衡管理．

关键词: 动力电池组, 积木式结构, 均衡控制, 耗散均衡, 非耗散均衡

Abstract:

In this paper,first,the impacts of imbalanced battery cell on the performance of power battery packs are discussed,and several equalization schemes and the corresponding control circuits are analyzed. Then,an equalization control scheme of the power battery packs in modular structure is proposed,which determines the equalization control strategy according to the voltage difference of adjacent battery cells by considering the relationship between the terminal voltage and the state of charge of the battery cell and by monitoring the terminal voltage in real time. Moreover,two equalizers respectively corresponding to the dissipation and the non-dissipation equilibriums are designed to conduct the charging and discharging equalization experiments on LiFePO4 battery pack. The results show that the proposed scheme achieves effective equalization control of power battery packs consisting of random battery units.

Key words: power battery pack, modular structure, equalization control, dissipation equilibrium, non-dissipation equilibrium

赵奕凡颜伏伍杜常清吴友宇李铮骆元. 应用于动力电池组的积木式结构均衡控制方案[J]. 华南理工大学学报(自然科学版), 2012, 40(12): 86-91,127.