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Numerical Simulation Study on Battery-Casing Sealing Considering Rubber Aging

Published online by Cambridge University Press:  14 October 2020

Yijie Huang ,
Fei Guo Open the ORCID record for Fei Guo [Opens in a new window] ,
Yuchao Ke ,
Fangyong Wu ,
Xiaohong Jia  and
Yuming Wang
Yijie Huang
Affiliation:
State Key Laboratory of Tribology, Tsinghua University, Beijing, China Joint Research Center for Rubber and Plastic Seals, Tsinghua University, Beijing, China
Fei Guo*
Affiliation:
State Key Laboratory of Tribology, Tsinghua University, Beijing, China Joint Research Center for Rubber and Plastic Seals, Tsinghua University, Beijing, China
Yuchao Ke
Affiliation:
Joint Research Center for Rubber and Plastic Seals, Tsinghua University, Beijing, China Anhui Zhongding Sealing Parts Co., Ltd., Ningguo, China
Fangyong Wu
Affiliation:
Zhejiang Hangze Intelligent Technology Co., Ltd.Wenzhou, China
Xiaohong Jia
Affiliation:
State Key Laboratory of Tribology, Tsinghua University, Beijing, China Joint Research Center for Rubber and Plastic Seals, Tsinghua University, Beijing, China
Yuming Wang
Affiliation:
State Key Laboratory of Tribology, Tsinghua University, Beijing, China Joint Research Center for Rubber and Plastic Seals, Tsinghua University, Beijing, China
*
*Corresponding author ([email protected])
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Abstract

Battery-casing sealing is the key factor for secure travel of new energy vehicles. We constructed a relatively accurate mechanical-simulation model by selecting a constitutive model, analyzing the influence of thermal elongation, verifying the grid-independence and comparing numerically by the pressure-measurement film on the basis of studying the physical performance of a certain type of sealing material that had been used in battery-casings after aging. Based on a porous-media model and combined with changes of macroscopic and microscopic contact characteristics of materials at different times after aging, the evolution rule of sealing performance with time was analyzed quantitatively by calculating the leakage. By analyzing the structure of circular arc bulge on the surface of sealing material, the radius of circular arc bulge with better sealing performance was obtained, which could reduce the leakage of sealing structure during the material’s lifecycle.

Keywords

battery-casingmechanical-simulation modelagingleakagesealing performance
Type
Research Article
Information
Journal of Mechanics , Volume 36 , Issue 6 , December 2020 , pp. 955 - 969
Copyright
Copyright © 2020 The Society of Theoretical and Applied Mechanics

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