Mechanical integrity of 18650 lithium-ion battery module: Packing density and packing mode

doi:10.1016/j.engfailanal.2018.04.041

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	Mechanical integrity of 18650 lithium-ion battery module: Packing density and packing mode
	Liu BH; Zhang JJ; Zhang C; Xu J(徐俊)
刊名	ENGINEERING FAILURE ANALYSIS
	2018-09-01
卷号	91 页码:315-326
关键词	Lithium-ion Battery Packs Packing Density Packing Mode Finite Element Analysis Mechanical Integrity
ISSN号	1350-6307
DOI	10.1016/j.engfailanal.2018.04.041
文献子类	Article
英文摘要	The crash safety of lithium-ion batteries (LIBs) has recently become a hot research topic because of the wide application of LIBs in vehicle. This paper investigates how packing design of battery cells influence the energy density (volume specific) and structural of LIB pack. Firstly, three packing geometrical parameters (one packing angle parameter and two cell number parameters) are extracted to describe the packing modes, packing density and sizes of the module. Then a detailed computational model is established and validated through experiments, with the implementation of a failure criterion for short-circuit. An anisotropic elasto-plastic model is introduced to describe the mechanical response of the cylindrical jellyroll. Based on the computational results, we quantitatively describe the relationship between structural strength and packing parameters of battery module. The deduced empirical equations from the model are validated against numerical examples, and provide a reliable path to predict the mechanical integrity of battery packs with the knowledge of packing information. This developed modeling approach can serve as an efficient tool for safety design of LIB packs.
分类号	二类
WOS关键词	SHORT-CIRCUIT ; THERMAL-BEHAVIOR ; STRAIN-RATE ; CELLS ; SIMULATION ; COMPRESSION ; FRACTURE ; SUBJECT ; IMPACT ; DAMAGE
WOS研究方向	Engineering ; Materials Science
语种	英语
WOS记录号	WOS:000434390500025
资助机构	National Key Research and Development Program of China(2017YFB0103703) ; State Key Laboratory of Vehicle NVH and Safety Technology(NVHSKL-201610) ; State Key Laboratory of Explosion Science and Technology (Beijing Institute of Technology)(KFJJ17-13M) ; China Scholarship Council (CSC)(201706020109)
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/77493]
专题	力学研究所_非线性力学国家重点实验室
推荐引用方式 GB/T 7714	Liu BH,Zhang JJ,Zhang C,et al. Mechanical integrity of 18650 lithium-ion battery module: Packing density and packing mode[J]. ENGINEERING FAILURE ANALYSIS,2018,91:315-326.
APA	Liu BH,Zhang JJ,Zhang C,&徐俊.(2018).Mechanical integrity of 18650 lithium-ion battery module: Packing density and packing mode.ENGINEERING FAILURE ANALYSIS,91,315-326.
MLA	Liu BH,et al."Mechanical integrity of 18650 lithium-ion battery module: Packing density and packing mode".ENGINEERING FAILURE ANALYSIS 91(2018):315-326.