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A novel design of lithium-polymer pouch battery pack with passive thermal management for electric vehicles

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  • Talluri, Teressa
  • Angani, Amarnathvarma
  • Shin, kyooJae
  • Hwang, Myeong-Hwan
  • Cha, Hyun-Rok

Abstract

This study investigates the thermal characteristics of a lithium polymer pouch battery thermal management system using phase change material (PCM) during the discharge. The research provides a detailed discussion of various factors influencing the system. The novelty aspect of this study involves evaluating thermal changes in the battery at 40 °C through hot soaking experiments comparing with both PCM-integrated modules and without PCM modules. The study further aims to identify the optimal PCM for both normal and high ambient conditions. Thermal parameters, including maximum temperature Tmax, average temperature Taverage and thermal gradient ΔT were evaluated at 25 °C and hot soaking performance at 40 °C temperature during discharge was analysed. Simulation were conducted to compare module behavior, especially at high-temperature conditions. Furthermore, a thorough examination of PCM melting and solid-phase transitions at high temperatures were performed that significantly impact the cooling performance of the PCM system. Our findings reveal that expanded graphite PCMs offers effective thermal performance with observed improvement of 27 %. Therefore, we recommend employing EG26 and EG28 PCMs for real-world application electric vehicle battery pack systems.

Suggested Citation

  • Talluri, Teressa & Angani, Amarnathvarma & Shin, kyooJae & Hwang, Myeong-Hwan & Cha, Hyun-Rok, 2024. "A novel design of lithium-polymer pouch battery pack with passive thermal management for electric vehicles," Energy, Elsevier, vol. 304(C).
    • Handle: RePEc:eee:energy:v:304:y:2024:i:c:s0360544224019790
    DOI: 10.1016/j.energy.2024.132205
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