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Numerical Analysis of Crashworthiness on Electric Vehicle’s Battery Case with Auxetic Structure

Author

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  • Liviu I. Scurtu

    (Automotive Engineering and Transport Department, Faculty of Automotive, Mechatronics and Mechanical Engineering, Technical University of Cluj-Napoca, 103-105 Muncii Avenue, 400641 Cluj-Napoca, Romania)

  • Ioan Szabo

    (Automotive Engineering and Transport Department, Faculty of Automotive, Mechatronics and Mechanical Engineering, Technical University of Cluj-Napoca, 103-105 Muncii Avenue, 400641 Cluj-Napoca, Romania)

  • Marius Gheres

    (Automotive Engineering and Transport Department, Faculty of Automotive, Mechatronics and Mechanical Engineering, Technical University of Cluj-Napoca, 103-105 Muncii Avenue, 400641 Cluj-Napoca, Romania)

Abstract

Due to the reduction in pollutant emissions, the number of electric vehicles has experienced rapid growth in worldwide traffic. Vehicles equipped with batteries represent a greater danger of explosion and fire in the case of traffic accidents, which is why new protective systems and devices have been designed to improve impact safety. Through their design and construction, auxetic structures can ensure the efficient dissipation of impact energy, reducing the risk of battery damage and maintaining the safety of vehicle occupants. In this paper, we analyze the crashworthiness performance of a battery case equipped with an energy absorber with a particular shape based on a re-entrant auxetic model. Simulations were performed at a velocity of 10 m/s and applied to the battery case with a rigid impact pole, a configuration justified by most accidents occurring at a low velocity. The results highlight that by using auxetic structures in the construction of the battery case, the impact can be mitigated by the improved energy absorber placed around the battery case, which leads to a decrease in the number of damaged cells by up to 35.2%. In addition, the mass of the improved energy absorbers is lower than that of the base structure.

Suggested Citation

  • Liviu I. Scurtu & Ioan Szabo & Marius Gheres, 2023. "Numerical Analysis of Crashworthiness on Electric Vehicle’s Battery Case with Auxetic Structure," Energies, MDPI, vol. 16(15), pages 1-18, August.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:15:p:5849-:d:1212333
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    References listed on IDEAS

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    1. Jia, Chunchun & Zhou, Jiaming & He, Hongwen & Li, Jianwei & Wei, Zhongbao & Li, Kunang & Shi, Man, 2023. "A novel energy management strategy for hybrid electric bus with fuel cell health and battery thermal- and health-constrained awareness," Energy, Elsevier, vol. 271(C).
    2. Farras Ezra Carakapurwa & Sigit Puji Santosa, 2022. "Design Optimization of Auxetic Structure for Crashworthy Pouch Battery Protection Using Machine Learning Method," Energies, MDPI, vol. 15(22), pages 1-26, November.
    3. Gabriel Brătucu & Adrian Trifan & Lavinia Dovleac & Ioana Bianca Chițu & Raluca Dania Todor & Rareș Brătucu, 2019. "Acquisition of Electric Vehicles—A Step towards Green Consumption. Empirical Research among Romanian Students," Sustainability, MDPI, vol. 11(23), pages 1-14, November.
    4. Jinhua Shao & Chunjing Lin & Tao Yan & Chuang Qi & Yuanzhi Hu, 2022. "Safety Characteristics of Lithium-Ion Batteries under Dynamic Impact Conditions," Energies, MDPI, vol. 15(23), pages 1-14, December.
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