Temperature adjustment system for electric vehicle

A method for controlling a temperature adjustment system for an electric vehicle comprising an air conditioning unit for performing air conditioning, a drive motor, and a battery having a cell accommodated in a battery case, the temperature adjustment system comprising a compressor for compressing a coolant containing CO2, a first heat exchanger for cooling the coolant compressed by the compressor, a first expansion valve for expanding the coolant cooled by the first heat exchanger, and a second expansion valve for expanding and injecting the coolant into the battery case, the method comprising:

• in response to obtaining a cooling request, supplying the coolant expanded by the first expansion valve to the air conditioning unit via an air-conditioning cooling path for cooling the air conditioning unit;
• in response to obtaining a motor cooling request, supplying the coolant expanded by the first expansion valve to the motor via a motor cooling path for cooling the motor;
• in response to obtaining a battery temperature adjustment request and the cooling request, supplying the coolant after cooling the air conditioning unit to the second expansion valve via a first battery cooling path for cooling the battery while cooling the air conditioning unit;
• and
• supplying the coolant that has passed through the air conditioning unit, the coolant that has passed through the motor, and/or the coolant that has passed through the battery to the compressor via a recovery path.