Heat pump system for a hybrid vehicle

A heat pump system for a hybrid vehicle, the heat pump system comprising:

• a first cooling apparatus including a first line along which a first coolant circulates,, an engine valve, a first radiator, and a first water pump, wherein the first line is configured to connect an engine, the engine valve, the first radiator, and the first water pump;
• a second cooling apparatus including a second line along which a second coolant circulates, an electrical component, a second radiator, and a second water pump, wherein the second line is configured to connect the electrical component, the second radiator, and the second water pump;
• a vehicle interior heating device including a third line having a first end connected to the engine valve and a second end connected to the first water pump to selectively circulate the first coolant, and a heater core provided on the third line;
• a control valve provided on the third line between the engine valve and the heater core;
• a first connection line including a first end connected to the control valve and a second end connected to the first line between the engine and the first water pump;
• a second connection line including a first end connected to the control valve and a second end connected to the third line between the control valve and the heater core;
• and
• an air conditioner unit including a refrigerant line along which a refrigerant circulates, a compressor, a condenser, a first expansion valve, a heat-exchanger, a second expansion valve, and an evaporator, wherein the refrigerant line is configured to connect the compressor, the condenser, the first expansion valve, the heat-exchanger, the second expansion valve, and the evaporator,
• wherein the second line and the second connection line are connected to the condenser to selectively circulate the first coolant and the second coolant.