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

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

Energy, 2025, vol. 316, issue C

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.

Keywords: CO2; Thermal management system; Electric vehicle (search for similar items in EconPapers)
Date: 2025
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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:316:y:2025:i:c:s0360544225001847

DOI: 10.1016/j.energy.2025.134542

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