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Impact Tests and Computed Tomography Scans of Prismatic Battery Cells

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  • Simon Schwolow

    (Research and Development, Volkswagen AG, VW-Straße 103, 38440 Wolfsburg, Germany
    Institute for Engineering Design, Technische Universität Braunschweig, Hermann-Blenk-Straße 42, 38108 Braunschweig, Germany)

  • Muhammad Ammad Raza Siddiqui

    (Research and Development, Volkswagen AG, VW-Straße 103, 38440 Wolfsburg, Germany
    Institute for Engineering Design, Technische Universität Braunschweig, Hermann-Blenk-Straße 42, 38108 Braunschweig, Germany)

  • Philipp Bauer

    (TUEV SUED Battery Testing GmbH, Daimlerstraße 15, 85748 München, Germany)

  • Thomas Vietor

    (Institute for Engineering Design, Technische Universität Braunschweig, Hermann-Blenk-Straße 42, 38108 Braunschweig, Germany)

Abstract

Recently, the use of prismatic cells in electric vehicles has increased significantly. Unlike the cylindrical or pouch format, the prismatic cell format has not been sufficiently investigated. In this study, quasi-static mechanical tests are performed on prismatic cells. The tests include a cylindrical and a hemispherical impactor that mechanically load the cells in all three spatial directions. In both in-plane directions, a cell stack consisting of three cells is tested to capture the influence and loading of the outer cells of a cell stack. It is found out that, in the in-plane tests, short-circuiting occurs first in the outer cells and subsequently in the middle cell, which is targeted by the impactor. This result can also be supported by computed tomography scans. The results illustrate that, when evaluating the crash safety of battery cells, several cells should always be tested in order to capture the different loading of the cells.

Suggested Citation

  • Simon Schwolow & Muhammad Ammad Raza Siddiqui & Philipp Bauer & Thomas Vietor, 2022. "Impact Tests and Computed Tomography Scans of Prismatic Battery Cells," Energies, MDPI, vol. 15(22), pages 1-20, November.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:22:p:8330-:d:966246
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    References listed on IDEAS

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    1. Zhu, Juner & Zhang, Xiaowei & Luo, Hailing & Sahraei, Elham, 2018. "Investigation of the deformation mechanisms of lithium-ion battery components using in-situ micro tests," Applied Energy, Elsevier, vol. 224(C), pages 251-266.
    2. Sheng Yang & Wenwei Wang & Cheng Lin & Weixiang Shen & Yiding Li, 2019. "Investigation of Internal Short Circuits of Lithium-Ion Batteries under Mechanical Abusive Conditions," Energies, MDPI, vol. 12(10), pages 1-16, May.
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