Analysis of lithium-ion battery thermal models inaccuracy caused by physical properties uncertainty

doi:10.1016/j.applthermaleng.2021.117513

	Analysis of lithium-ion battery thermal models inaccuracy caused by physical properties uncertainty
	Dong, Ti 2; Wang, Yiwei 1,2; Cao, Wenjiong 2; Zhang, Weijiang 1,2; Jiang, Fangming 2
刊名	APPLIED THERMAL ENGINEERING
	2021-11-05
卷号	198 页码:13
关键词	Lithium-ion battery Thermal model Physical parameters uncertainty Temperature distribution Battery management system
ISSN号	1359-4311
DOI	10.1016/j.applthermaleng.2021.117513
通讯作者	Cao, Wenjiong(caowj@ms.giec.ac.cn) ; Jiang, Fangming(fm_jiang2000@yahoo.com)
英文摘要	Thermal management is of upmost importance for the safe and efficient operation of lithium-ion batteries in electric vehicles. To this purpose it is required to develop reliable thermal models to assess the behavior of the battery under different operating and ambient conditions. In this work, it is proposed a three-dimensional thermal model of the 40Ah LiFePO4/graphite prismatic battery, which is a particular type of the lithium-ion battery (LIB), and it is analyzed the uncertainty related to the base data needed to run the model. The base data comprises, among others, the battery material physical properties and their dependence on the temperature, and the special "double-coated electrodes" structure. The charge and discharge processes of the 40Ah LiFePO4/ graphite prismatic battery are tested experimentally to verify the reliability of the thermal model. The deviation of the thermal model predictions caused by the uncertainty of the physical parameters of the battery is fully investigated numerically. The influence of physical parameters on the predictions is verified for the battery surface temperature and temperature difference between the battery interior and the surface. For the range of the properties tested the highest deviations of the predicted surface temperature and the inside and surface temperature difference are 0.14 degrees C and 0.93 degrees C during discharge at room temperature, respectively. Based on this investigation, it is proposed a simplified one-dimensional thermal model, which has the potential of being an expedite way of calculating the temperature distribution inside most commercial prismatic batteries. The comparison of the temperature distribution predictions using the three-dimensional thermal model and the simplified model indicates that the temperature gradient predictions obtained with the two models are in close agreement; the maximum relative difference of the two models is only 0.5%. The simplified thermal model, in what concerns the uncertainty of the physical properties, may provide an easy-to-use preliminary tool to evaluate the temperature distribution related to prismatic batteries.
资助项目	China National Key RD Project[2018YFB0905300] ; China National Key RD Project[2018YFB0905303] ; Guangdong Key Labo-ratory of New and Renewable Energy Research and Development Fund[E1510302] ; Guangdong Key Labo-ratory of New and Renewable Energy Research and Development Fund[Y909jh1] ; Guangzhou Science and Technology Plan Project[202102080433]
WOS关键词	THERMOPHYSICAL PROPERTIES ; HEAT-GENERATION ; LIFEPO4 BATTERY ; DISCHARGE ; CONDUCTIVITY ; TEMPERATURE ; MANAGEMENT ; ISSUES ; CHARGE ; CAPACITY
WOS研究方向	Thermodynamics ; Energy & Fuels ; Engineering ; Mechanics
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000701777100005
资助机构	China National Key RD Project ; Guangdong Key Labo-ratory of New and Renewable Energy Research and Development Fund ; Guangzhou Science and Technology Plan Project
内容类型	期刊论文
源URL	[http://ir.giec.ac.cn/handle/344007/34801]
专题	中国科学院广州能源研究所
通讯作者	Cao, Wenjiong; Jiang, Fangming
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangdong Key Lab New & Renewable Energy Res & De, CAS Key Lab Renewable Energy, Guangzhou 510640, Peoples R China
推荐引用方式 GB/T 7714	Dong, Ti,Wang, Yiwei,Cao, Wenjiong,et al. Analysis of lithium-ion battery thermal models inaccuracy caused by physical properties uncertainty[J]. APPLIED THERMAL ENGINEERING,2021,198:13.
APA	Dong, Ti,Wang, Yiwei,Cao, Wenjiong,Zhang, Weijiang,&Jiang, Fangming.(2021).Analysis of lithium-ion battery thermal models inaccuracy caused by physical properties uncertainty.APPLIED THERMAL ENGINEERING,198,13.
MLA	Dong, Ti,et al."Analysis of lithium-ion battery thermal models inaccuracy caused by physical properties uncertainty".APPLIED THERMAL ENGINEERING 198(2021):13.