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<p>The utilization of electric vehicles (EVs) effectively addresses the global necessity of sustainable energy in the automobile sector. Lithium-ion batteries are prevalent commercially in electric vehicles. However, the huge amount of heat produced in the battery pack has a substantial impact on performance and safety; thus, controlling battery temperature within desirable limits is an essential factor. There are various cooling techniques available, but heat dissipation rate from cylindrical battery cells is enhanced by using circumferential fins incorporated in forced air cooling. The current study focuses on improving the effectiveness of circumferential fin-based hybrid thermal management by optimizing the number of fins, the thickness of the circumferential fin, and the velocity of airflow to enhance heat dissipation from the fins. The developed heat transfer correlation describes the impact of various parameters on the convective heat transfer coefficient. The optimum fin thickness and airflow velocity boost the heat transfer coefficient, which enhances heat extraction potential and lowers the power consumption. The single battery cell consists of three circumferential fins with thicknesses of 0.15&#xa0;mm and 0.5&#xa0;mm, which are able to drop the temperature rise by 18.6% and 30.8% at 3C discharge and natural convection. Also, for different airflow velocities such as at 1&#xa0;m/s, 2&#xa0;m/s, 3&#xa0;m/s, and 4&#xa0;m/s, drop in temperature rise by 9.2%, 16.4%, 29.7%, and 43.9% is observed for a 3S3P battery pack at 3C discharge compared to natural convection.</p>

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Effect of various parameters in circumferential fin-based hybrid thermal management for battery packs

  • 期刊论文

  • 发表日期：

    2024年12月31日

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  • Akshay B. Padalkar,
  • Mangesh B. Chaudhari,
  • Adinath M. Funde,
  • Somnath Nandi

摘要

The utilization of electric vehicles (EVs) effectively addresses the global necessity of sustainable energy in the automobile sector. Lithium-ion batteries are prevalent commercially in electric vehicles. However, the huge amount of heat produced in the battery pack has a substantial impact on performance and safety; thus, controlling battery temperature within desirable limits is an essential factor. There are various cooling techniques available, but heat dissipation rate from cylindrical battery cells is enhanced by using circumferential fins incorporated in forced air cooling. The current study focuses on improving the effectiveness of circumferential fin-based hybrid thermal management by optimizing the number of fins, the thickness of the circumferential fin, and the velocity of airflow to enhance heat dissipation from the fins. The developed heat transfer correlation describes the impact of various parameters on the convective heat transfer coefficient. The optimum fin thickness and airflow velocity boost the heat transfer coefficient, which enhances heat extraction potential and lowers the power consumption. The single battery cell consists of three circumferential fins with thicknesses of 0.15 mm and 0.5 mm, which are able to drop the temperature rise by 18.6% and 30.8% at 3C discharge and natural convection. Also, for different airflow velocities such as at 1 m/s, 2 m/s, 3 m/s, and 4 m/s, drop in temperature rise by 9.2%, 16.4%, 29.7%, and 43.9% is observed for a 3S3P battery pack at 3C discharge compared to natural convection.