A separator is a membrane that prevents the physical contact between the positive and negative electrodes while enabling ionic transport. The integrity of the separator is vital to the performance and reliability of a battery. This paper presents finite element stress analysis for the separator in a lithium-ion battery using a macro-scale battery cell model. In this model, the porous electrodes were treated as homogenized media and represented with the effective properties estimated using the rule of mixtures. To compute the deformation due to lithium (Li) intercalation & deintercalation and temperature variation, the Li concentration distribution and temperature change due to electrochemical reactions must be known. These parameters were computed using a multi-physics model in COMSOL and mapped to the macro-scale model in ANSYS. Numerical simulations were conducted to identify the locations and magnitudes of the maximum strain and stress of the separator in the pouch cell. The effects of temperature change and the effective friction between separator and its surrounding electrodes were also investigated.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Stress Analysis of the Separator in a Lithium-Ion Battery


    Additional title:

    Sae Int. J. Engines


    Contributors:

    Conference:

    SAE 2011 World Congress & Exhibition ; 2011


    Published in:

    Publication date :

    2011-04-12


    Size :

    10 pages




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Stress Analysis of the Separator in a Lithium-Ion Battery

    Shi, D. / Xiao, X. / Wu, W. et al. | British Library Conference Proceedings | 2011


    Development of a lithium secondary battery separator

    Moore, J. A. / Willie, R. | NTRS | 1985


    MULTI-LAYER SEPARATOR FOR LITHIUM-ION BATTERY

    PARK JONGHWAN / JEON INSIK | European Patent Office | 2025

    Free access

    Mechanical Failure Modes of Prismatic Lithium-ion Battery Separator

    Lan, FengChong / Chen, Jiqing / Wang, Ping et al. | SAE Technical Papers | 2022


    Mechanical Failure Modes of Prismatic Lithium-ion Battery Separator

    Wang, Ping / Chen, Jiqing / Li, Zhijie et al. | British Library Conference Proceedings | 2022