BATTERY COOLING CIRCUIT AND METHOD OF CONTROLLING THE SAME

A battery cooling circuit is provided. The battery cooling circuit is configured to cool a battery provided in a vehicle by using an air conditioner system in the vehicle. The battery cooling circuit includes an air-cooled part connected in series to the air conditioner system and configured to cool a refrigerant by allowing the refrigerant to exchange heat with a first cooling fluid in the air conditioner system while flowing. The battery cooling circuit further includes a water-cooled part connected in series to a circuit configured to cool the battery. The water-cooled part is installed to communicate with the air-cooled part to allow the refrigerant to flow therein, configured to be filled with a second cooling fluid in the circuit configured to cool the battery, and configured to cool the second cooling fluid by allowing the second cooling fluid to exchange heat with the refrigerant.