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Steady-state and dynamic experimental study of an enhanced automotive thermal management system based on energy cascade utilization

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  • Jia, Fan
  • Yin, Xiang
  • He, Shentong
  • Cao, Zhijian
  • Fang, Jianmin
  • Cao, Feng
  • Wang, Xiaolin

Abstract

The thermal management system of electric vehicles is crucial for both the range and the safety of battery. To compensate for the slightly inferior cooling performance of CO2 refrigeration, an enhanced automotive thermal management system based on energy cascade utilization was designed and evaluated. Initially, a dual-evaporation pressure thermal management system was designed to meet varying temperature requirements for the cabin and battery, and an experimental platform was constructed. Subsequently, the dynamic and steady state operating characteristics of the dual-evaporative pressure system are investigated. It was found that compared to traditional systems, the enhanced system significantly enhances performance across various operating conditions. The degree of performance improvement is influenced by factors such as the flow ratio between the battery and cabin branches and the thermal load of the battery. Additionally, the dynamic response characteristics of the new system are smoother compared to the conventional system, indicating reliable operation. Provides a promising solution for enhancing battery thermal management while reducing energy consumption, thereby improving the driving range and efficiency of electric vehicles.

Suggested Citation

  • Jia, Fan & Yin, Xiang & He, Shentong & Cao, Zhijian & Fang, Jianmin & Cao, Feng & Wang, Xiaolin, 2025. "Steady-state and dynamic experimental study of an enhanced automotive thermal management system based on energy cascade utilization," Energy, Elsevier, vol. 316(C).
    • Handle: RePEc:eee:energy:v:316:y:2025:i:c:s0360544225001847
    DOI: 10.1016/j.energy.2025.134542
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    Keywords

    CO2; Thermal management system; Electric vehicle;
    All these keywords.

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