Design of power battery thermal management system for electric vehicles
Aiming at the temperature control system of each system of electric vehicles,a set of power battery thermal management system for electric vehicle is de-signed,including motor cooling circuit,passenger compartment thermal management cir-cuit and battery thermal management circuit.Based on calculating the thermal load of the system,determining the temperature of the battery controlled by logical threshold control method,and the temperature of the passenger compartment controlled by fuzzy control,the power battery model,the passenger compartment and control system model are estab-lished by Comsol and Simulink respectively,which are used for co-simulation.The results show that based on the standard urban road conditions and the climate of Dalian,the max-imum temperature of the battery cell decreases from 40.00℃to 29.05℃after 3 276 sec-onds of system operation under the simulated ambient temperature of 35℃,and the tem-perature of the passenger compartment can be maintained around 25℃;under the simula-ted ambient temperature of-10℃,the minimum temperature of the battery cell increases from-10.00℃to 23.19℃after 3 276 seconds of system operation,and the temperature of the passenger compartment meets the control requirements set by the fuzzy controller.
electric vehiclespower batterythermal management systemfuzzy control
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