EV INTEGRATED TEMPERATURE CONTROL SYSTEM

A thermal management system is provided that allows efficient thermal communication between a refrigerant-based control circuit and a pair of non-refrigerant-based control circuits, where one of the non-refrigerant-based control circuits is thermally coupled to the vehicle's battery system and the other of the non-refrigerant-based control circuits is thermally coupled to the vehicle's drive train. The refrigerant-based control circuit may be operated either in a heating mode or a cooling mode and is coupled to the vehicle's HVAC system using a refrigerant-air heat exchanger, and to one of the non-refrigerant-based control circuits using a refrigerant-fluid heat exchanger. Multiple diverter valves allow the three thermal control circuits to be arranged in any of a variety of configurations, and to be coupled to any of a variety of radiators, thus allowing the system to efficiently regulate the temperature of the passenger cabin, the battery system and the drive train.