Abstract
Based on the structure of the thermal management system for electric vehicles, complete the design of the thermal management system for the whole vehicle, and realize the coupling temperature regulation between the vehicle cabin and the power battery pack. A direct cooling system model containing electric compressors, electronic expansion valves, heat exchangers, power battery packs, and other components coupled to the air conditioning system is established. Based on this, a vehicle thermal management model of the entire vehicle including electric vehicle, electric motor, high and low voltage network, vehicle cabin, air conditioning system, and power battery pack is completed. Develop the logic threshold control strategy, compressor speed control strategy, and electronic expansion valve opening control strategy for the vehicle thermal management system. Through the comparative analysis of the temperature control effect of the thermal management system on the cabin and the power battery pack under different ambient temperatures, the effect of different temperatures on the vehicle range is analyzed. The results show that this vehicle thermal management system can meet the requirements for battery pack heat dissipation and vehicle cabin refrigeration.
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Schedule a callMore From: Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering
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