VEHICULAR HEAT EXCHANGE SYSTEM AND MOTOR UNIT USED IN SAME

There are included a first heat exchanger () for causing heat to be exchanged between refrigerant and air in an interior of a vehicle (), a heating circuit () for causing the refrigerant with a temperature higher than that of the air in the interior of the vehicle to circulate through the first heat exchanger, a secondary battery () where charging and discharging of power are performed, a cooling water circuit () for causing cooling water that exchanges heat with the secondary battery to circulate, a second heat exchanger () for causing heat to be exchanged between the refrigerant and the cooling water, the second heat exchanger being provided in a manner including a portion of the heating circuit downstream of the first heat exchanger and a portion of the cooling water circuit, and a case () for covering the secondary battery, the cooling water circuit, and the second heat exchanger.