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Methodology for Developing a Macro Finite Element Model of Lithium-Ion Pouch Cells for Predicting Mechanical Behaviour under Multiple Loading Conditions

Author

Listed:
  • Richard Beaumont

    (WMG, University of Warwick, Coventry CV4 7AL, UK)

  • Iain Masters

    (WMG, University of Warwick, Coventry CV4 7AL, UK)

  • Abhishek Das

    (WMG, University of Warwick, Coventry CV4 7AL, UK)

  • Steve Lucas

    (WMG, University of Warwick, Coventry CV4 7AL, UK)

  • Arunn Thanikachalam

    (WMG, University of Warwick, Coventry CV4 7AL, UK)

  • David Williams

    (WMG, University of Warwick, Coventry CV4 7AL, UK)

Abstract

To assist in light weighting of electric vehicles by improving the volumetric and gravimetric energy density and the structural performance of the battery pack, a modelling methodology based on a macro finite element model of a pouch cell has been developed. This model treats the core cell structure as a homogeneous orthotropic honeycomb block with the pouch material being defined as an orthotropic fabric with compressive stress elimination. The model considers five compression and bending load cases simultaneously and allows a level of element discretisation that is computationally efficient and appropriate for inclusion in full vehicle and sub-system simulations. The methodology is scalable in that it can be applied to a range of chemistries, external geometries and internal cell constructions. When considering stacks of cells, the model is predictive for both lateral compression and three-point bend, but further work is required to improve the confined compression response.

Suggested Citation

  • Richard Beaumont & Iain Masters & Abhishek Das & Steve Lucas & Arunn Thanikachalam & David Williams, 2021. "Methodology for Developing a Macro Finite Element Model of Lithium-Ion Pouch Cells for Predicting Mechanical Behaviour under Multiple Loading Conditions," Energies, MDPI, vol. 14(7), pages 1-21, March.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:7:p:1921-:d:527097
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    References listed on IDEAS

    as
    1. Oh, Ki-Yong & Epureanu, Bogdan I., 2016. "Characterization and modeling of the thermal mechanics of lithium-ion battery cells," Applied Energy, Elsevier, vol. 178(C), pages 633-646.
    2. Jia, Yikai & Yin, Sha & Liu, Binghe & Zhao, Hui & Yu, Huili & Li, Jie & Xu, Jun, 2019. "Unlocking the coupling mechanical-electrochemical behavior of lithium-ion battery upon dynamic mechanical loading," Energy, Elsevier, vol. 166(C), pages 951-960.
    3. Hartmut Popp & Gregor Glanz & Karoline Alten & Irina Gocheva & Wernfried Berghold & Alexander Bergmann, 2018. "Mechanical Frequency Response Analysis of Lithium-Ion Batteries to Disclose Operational Parameters," Energies, MDPI, vol. 11(3), pages 1-13, March.
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