HEAT PUMP SYSTEM FOR VEHICLE

A heat pump system for a vehicle may adjust a temperature of a battery module by use of one chiller that performs heat exchange between a refrigerant and a coolant and improve heating efficiency by use of waste heat generated from an electrical component and the battery module, and increase the flow rate of the refrigerant by applying the gas injection unit operates in the heating mode or the heating/dehumidification mode of the vehicle, reducing power consumption of the first compressor and maximizing heating performance.