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Optimising thermoelectric coolers for battery thermal management in light electric vehicles

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  • Bhattacharyya, Sankhadeep
  • Dinh, Quang Truong
  • McGordon, Andrew

Abstract

The Battery Thermal Management System (BTMS) is critical for enhancing the performance and longevity of electric vehicle batteries. Due to their compactness, light electric vehicles (LEVs) have restrictions on BTMS size and weight. Thermoelectric coolers (TECs) have been known for their compactness and reliability and can be a potential solution for BTMS in LEVs. However, the integration of TECs in BTMS still lacks an optimal selection of TEC material, optimal BTMS design, and operational analysis, which are the key areas addressed in this study. First, a simplified cell model ideal for integration with TECs is developed, reflecting the temperature distribution in the cell. Simulations and BTMS performance analysis are then carried out to quantify the relationship between TEC current and cell average temperature and temperature difference under various heat generation and dissipation rates. The study also delves into the impact of TEC design parameters on BTMS performance, providing valuable insights for BTMS manufacturers to optimise LEV battery operation. It is found that the pellet height in TECs is crucial; directly impacting the TEC efficiency and power consumption and therefore must be selected according to the needs of the LEV. An approach for this optimal selection is provided in this study in the form of a multi-objective optimisation problem along with an example case. It is found that under regular operating conditions, an optimised TEC can save 5.89% of energy consumption over the standard TECs available off the shelf.

Suggested Citation

  • Bhattacharyya, Sankhadeep & Dinh, Quang Truong & McGordon, Andrew, 2025. "Optimising thermoelectric coolers for battery thermal management in light electric vehicles," Applied Energy, Elsevier, vol. 386(C).
    • Handle: RePEc:eee:appene:v:386:y:2025:i:c:s0306261925002466
    DOI: 10.1016/j.apenergy.2025.125516
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    References listed on IDEAS

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