Modeling of Lithium Battery Characteristics Considering the Influence of Temperature and Hysteresis Effect

被引：0
|
作者：
Song K. [1 ]
Chen X. [1 ]
Cheng A. [1 ]
机构：
[1] Hunan University, State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Changsha
来源：
Qiche Gongcheng/Automotive Engineering | 2019年 / 41卷 / 03期
关键词：
Hysteresis effect; Lithium battery; OCV; SOC;
D O I：
10.19562/j.chinasae.qcgc.2019.03.014
中图分类号：
学科分类号：
摘要：
In order to improve the accuracy of lithium battery model, the SOC estimation error caused by hysteresis voltage is analyzed, indicating that the influence of hysteresis cannot be neglected in modeling lithium battery. Thus an equivalent hysteresis model for lithium battery is proposed based on the analysis on the changing pattern of hysteresis voltage at different temperatures and the internal electrochemical processes, affecting the dynamic characteristics of lithium battery. Then the OCV and impedance parameters are discriminated respectively by using the small constant rate charge-discharge experiment at different temperatures and the urban road driving cycle. Finally, the estimated terminal voltage and SOC of battery model are compared with experimental data. The results show that the accuracy of model can be doubled when the hysteresis effect is taken into account in lithium battery modeling. © 2019, Society of Automotive Engineers of China. All right reserved.
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页码：334 / 339
页数：5
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