Thermal management system for vehicle

A thermal management system for a vehicle, comprising:

• a first pump and a second pump, which are adapted to draw and discharge a heat medium;
• a compressor adapted to draw and discharge a refrigerant;
• a heat-medium heating heat exchanger that heats the heat medium by exchanging heat between the refrigerant discharged from the compressor and the heat medium drawn into and discharged from the second pump;
• a decompressor that decompresses and expands the refrigerant flowing out of the heat-medium heating heat exchanger;
• a heat-medium cooling heat exchanger that cools the heat medium by exchanging heat between the refrigerant decompressed and expanded by the decompressor and the heat medium drawn into and discharged from the first pump;
• a heat medium-outside air heat exchanger that exchanges heat between the heat medium cooled by the heat-medium cooling heat exchanger and outside air;
• an air heating heat exchanger that heats ventilation air into a vehicle interior by exchanging sensible heat between the heat medium heated by the heat-medium heating heat exchanger and the ventilation air;
• an engine heat transfer portion that transfers heat between an engine outputting a traveling driving force and the heat medium;
• a battery heat transfer portion that transfers heat between a battery supplying electric power to a traveling electric motor and the heat medium;
• a switching device that switches between a state in which the heat medium circulates through the heat-medium heating heat exchanger and a state in which the heat medium does not circulate through the heat-medium heating heat exchanger with respect to each of the engine heat transfer portion and the battery heat transfer portion;
• and
• a controller that controls the switching device (i) to set a battery warming-up state in which the heat medium circulates between the battery heat transfer portion and the heat-medium heating heat exchanger while the heat medium does not circulate between the engine heat transfer portion and the heat-medium heating heat exchanger when both the battery and engine need to be warmed up;
• and (ii) to set an engine warming-up state in which the heat medium circulates between the engine heat transfer portion and the heat-medium heating heat exchanger while the heat medium does not circulate between the battery heat transfer portion and the heat-medium heating heat exchanger when a temperature of the battery exceeds a target battery warming-up temperature in the battery warming-up state.