Design and Research of Double Steam Refrigerant Direct Cooling System for Electric Vehicles
In view of the problem of battery overtemperature and temperature uniformity in the case of high-rate charge/discharge of the battery in the thermal management system of electric vehicles,a U-shaped micro-channel structure of the refrigerant direct cooling plate is designed,and the control strategy of the double steam direct cooling system is developed.The battery direct cooling system and the cabin cooling system are built by Amesim simulation platform,and the cooling performance of single steam(only battery)and double steam system(battery and cabin)is verified.The simulation results show that:In the single and double steaming system,the control of outlet superheat of the cold plate is less than 5 K,which can meet the cooling performance requirements of the battery and the cabin.At the meanwhile,the control strategy of the double steaming direct cooling system can also improve the thermal comfort of the cabin(the temperature fluctuation of the cabin is less than 1℃when the battery cooling is opened).It can provide reference for the design of vehicle direct cooling system.
Automotive thermal managementRefrigerant coolingRefrigerant cooling plateSingle steaming systemDouble steaming system
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