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<p>Understanding transient heat transfer in electric vehicle (EV) batteries is crucial due to its impact on system performance; yet, challenges remain in comprehending the dynamics of heating and cooling processes. This research focuses on enhancing the thermal management of heat sinks used in EV batteries by analyzing the efficiency of two pin–fin configurations: circular and square. These designs are evaluated by measuring the time required to achieve three specific temperatures (46&#xa0;°C, 56&#xa0;°C, and 66&#xa0;°C) and comparing these metrics to those of a conventional heat sink. Tests are conducted across varying heat inputs (15&#xa0;W, 25&#xa0;W, 35&#xa0;W, and 45&#xa0;W) to examine the heating–cooling cycles. The enhancement ratio is employed to quantify the improved thermal performance of the pin–fin configurations. Results reveal that heat sinks with square pin–fins exhibit a robust heating–cooling performance and significantly higher enhancement ratios, especially at a 35&#xa0;W heat input. This study highlights the potential of simple geometric modifications to improve heat dissipation efficiency with minimal mass additions, offering valuable insights for optimizing EV battery thermal systems.</p>

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Enhancing thermal management in electric vehicle batteries: performance analysis of heat sinks with circular and square pin–fin configurations

  • 期刊论文

  • 发表日期：

    2025年6月3日

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  • T. Rajmohan,
  • S. Ramesh,
  • M. Arulprakasajothi,
  • N. Poyyamozhi

摘要

Understanding transient heat transfer in electric vehicle (EV) batteries is crucial due to its impact on system performance; yet, challenges remain in comprehending the dynamics of heating and cooling processes. This research focuses on enhancing the thermal management of heat sinks used in EV batteries by analyzing the efficiency of two pin–fin configurations: circular and square. These designs are evaluated by measuring the time required to achieve three specific temperatures (46 °C, 56 °C, and 66 °C) and comparing these metrics to those of a conventional heat sink. Tests are conducted across varying heat inputs (15 W, 25 W, 35 W, and 45 W) to examine the heating–cooling cycles. The enhancement ratio is employed to quantify the improved thermal performance of the pin–fin configurations. Results reveal that heat sinks with square pin–fins exhibit a robust heating–cooling performance and significantly higher enhancement ratios, especially at a 35 W heat input. This study highlights the potential of simple geometric modifications to improve heat dissipation efficiency with minimal mass additions, offering valuable insights for optimizing EV battery thermal systems.