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Degradation and Dependence Analysis of a Lithium-Ion Battery Pack in the Unbalanced State

文献类型：期刊论文

作者Wang, Xiaohong3; Li, Shixiang3; Wang, Lizhi1,2; Sun, Yaning3; Wang, Zhongxing4
刊名ENERGIES
出版日期2020-11-01
卷号13期号:22页码:25
关键词lithium-ion battery packs unbalanced state degradation dependence
DOI10.3390/en13225934
英文摘要Lithium-ion batteries are widely used in the energy field due to their high efficiency and clean characteristics. They provide more possibilities for electric vehicles, drones, and other applications, and they can provide the higher requirements necessary for the reliability of battery pack systems. However, it is easy for a battery pack to be unbalanced because of the dependence between the cells. The unbalanced state will make the degradation process more complex and cause abnormal discharge parameters, which brings challenges in the analysis of the state of health (SOH) of battery packs. In order to study the degradation process in the unbalanced condition, in this study, a degradation test of four different configurations of battery packs was designed and implemented, and the degradation process was primarily studied from the perspective of dependence. First, the degradation characteristics and dependency degree of different configurations of the unbalanced state were discussed. Second, a hypothesis test and a linear regression analysis were used to analyze the degradation process and the acceleration effect of a battery pack in the unbalanced state. Finally, partial least squares regression was used to establish the dependence model of battery packs in the unbalanced state. A high regression coefficient (R-2 > 0.9) and low p-value < 0.0001 indicated that the correlation of the degradation process was effectively quantified. The results provide a reference for optimizing a consistent design of battery packs and managing the SOH of battery packs.
WOS关键词CELL VARIATIONS ; SYSTEM ; CONSISTENCY ; DIAGNOSIS
资助项目Strategic Leading Science & Technology Program (Class A) of the Chinese Academy of Sciences[XDA14000000] ; National Natural Science Foundation of China[51805016] ; Fundamental Research Funds for the Central Universities[YWF-20-BJ-J-908]
WOS研究方向Energy & Fuels
语种英语
出版者MDPI
WOS记录号WOS:000594213500001
资助机构Strategic Leading Science & Technology Program (Class A) of the Chinese Academy of Sciences ; Strategic Leading Science & Technology Program (Class A) of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Strategic Leading Science & Technology Program (Class A) of the Chinese Academy of Sciences ; Strategic Leading Science & Technology Program (Class A) of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Strategic Leading Science & Technology Program (Class A) of the Chinese Academy of Sciences ; Strategic Leading Science & Technology Program (Class A) of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Strategic Leading Science & Technology Program (Class A) of the Chinese Academy of Sciences ; Strategic Leading Science & Technology Program (Class A) of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities
源URL[http://ir.iggcas.ac.cn/handle/132A11/98647]  
专题地质与地球物理研究所_中国科学院页岩气与地质工程重点实验室
通讯作者Wang, Lizhi
作者单位1.Minist Ind & Informat Technol, Key Lab Adv Technol Intelligent Unmanned Flight S, Beijing 100191, Peoples R China
2.Beihang Univ, Inst Unmanned Syst, Beijing 100191, Peoples R China
3.Beihang Univ, Sch Reliabil & Syst Engn, Beijing 100191, Peoples R China
4.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Xiaohong,Li, Shixiang,Wang, Lizhi,et al. Degradation and Dependence Analysis of a Lithium-Ion Battery Pack in the Unbalanced State[J]. ENERGIES,2020,13(22):25.
APA Wang, Xiaohong,Li, Shixiang,Wang, Lizhi,Sun, Yaning,&Wang, Zhongxing.(2020).Degradation and Dependence Analysis of a Lithium-Ion Battery Pack in the Unbalanced State.ENERGIES,13(22),25.
MLA Wang, Xiaohong,et al."Degradation and Dependence Analysis of a Lithium-Ion Battery Pack in the Unbalanced State".ENERGIES 13.22(2020):25.

入库方式： OAI收割

来源：地质与地球物理研究所

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