Patent attributes
A method of controlling temperature of a battery module in a battery cooling system for a vehicle may include driving the vehicle, setting an electrical equipment cooling start temperature A′, a coolant cooling start temperature B′ of the battery module, and a refrigerant cooling start temperature B″ of the battery module, detecting an electrical equipment temperature A and a battery module temperature B, determining whether the temperature B′ is higher than the temperature B and is lower than the temperature B″ and whether the temperature A is lower than the temperature A′, and closing when the temperature B′ is higher than the temperature B and is lower than the temperature B″ and the temperature A is lower than the temperature A′, each port of first and second valves, turning off operation of a second expansion valve, and terminating the control to prevent coolant from circulating to a cooler and the battery module.
