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Influence of equalization on LiFePO4 battery inconsistency

文献类型：期刊论文

作者Lv, Jie1; Song, Wenji1; Lin, Shili1; Chen, Mingbiao1; Feng, Ziping1; Li, Yongliang2; Ding, Yulong2
刊名INTERNATIONAL JOURNAL OF ENERGY RESEARCH
出版日期2017-06-25
卷号41期号:8页码:1171-1181
关键词Battery Management Systems Active Balancing Battery Capacity Inconsistency Balancing Parameters
DOI10.1002/er.3701
文献子类Article
英文摘要Capacity inconsistency among cells is a serious problem in battery energy storage systems. The inconsistency reduces battery pack lifetimes and increases their usage costs. Active balancing is an effective technique for performance equalization between cells. Here, a quantitative analysis method based on an active balancing circuit is developed to explain how battery capacity inconsistency is affected by balancing parameters. Four balancing parameters, namely, charge/discharge current rate, initial capacity difference before balancing, balancing current, and balancing time, have been considered to explain the effects on battery capacity consistency. The results indicate that (1) the inconsistency of batteries can be reduced more effectively for discharging with active balancing at small current rates; (2) for an improved balancing effect, it is necessary to maintain a high ratio () of balancing current to charging/discharging current during the balancing process; thus, a larger balancing current is significant; (3) the value of capacity difference reduction ratio () grows more dramatically in discharging at large initial battery capacity differences; and (4) when the balancing current only marginally changes, following the increase of current rate, the ratio () of balancing time to charging duration decreases and the balancing effect becomes inconspicuous in charging, while increases and the balancing effect reduces in discharging. These influence regulations can help us make and optimize balancing control strategies for LiFePO4 batteries. Copyright (c) 2017 John Wiley & Sons, Ltd.
WOS关键词LITHIUM-ION BATTERIES ; ELECTRIC VEHICLES ; SOC ESTIMATION ; CELL ; MANAGEMENT ; SYSTEM ; MODEL ; STATE ; CONVERTER ; PERFORMANCE
语种英语
WOS记录号WOS:000403300500008
资助机构National Natural Science Foundation of China(51477171) ; Science and Technology Project of Guangdong Province(2014B010128001 ; Guangzhou Science and Technology Project(201509010018) ; Key Laboratory Foundation of Renewable Energy, Chinese Academy of Sciences(Y607j31001) ; 2015B050501008)
源URL[http://ir.giec.ac.cn/handle/344007/14142]  
专题中国科学院广州能源研究所
作者单位1.Chinese Acad Sci, Guangzhou Inst Energy Convers, CAS Key Lab Renewable Energy, Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Guangdong, Peoples R China
2.Univ Birmingham, Sch Chem Engn, Birmingham B15 2TT, W Midlands, England
推荐引用方式
GB/T 7714		 Lv, Jie,Song, Wenji,Lin, Shili,et al. Influence of equalization on LiFePO4 battery inconsistency[J]. INTERNATIONAL JOURNAL OF ENERGY RESEARCH,2017,41(8):1171-1181.
APA Lv, Jie.,Song, Wenji.,Lin, Shili.,Chen, Mingbiao.,Feng, Ziping.,...&Ding, Yulong.(2017).Influence of equalization on LiFePO4 battery inconsistency.INTERNATIONAL JOURNAL OF ENERGY RESEARCH,41(8),1171-1181.
MLA Lv, Jie,et al."Influence of equalization on LiFePO4 battery inconsistency".INTERNATIONAL JOURNAL OF ENERGY RESEARCH 41.8(2017):1171-1181.

入库方式： OAI收割

来源：广州能源研究所

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