HEAT PUMP SYSTEM FOR VEHICLE

A heat pump system for a vehicle includes a cooling apparatus (10) of circulating a coolant in a coolant line (11) to cool at least one electrical component (15) provided in the coolant line; a battery cooling apparatus (20) of circulating the coolant to the battery module (24); a heating apparatus (40) that heats an interior of the vehicle using the coolant; a chiller (30) for heat-exchanging the coolant with a refrigerant to control a temperature of the coolant [0002] , and, wherein the reservoir tank (16) is provided in the coolant line (11) between the radiator (12) and the first valve (V1), and is connected to the coolant line connecting the first valve and the first water pump through a supply line (17) bypassing the first valve.