Integrated Thermal Management System

An integrated thermal management system comprising:

• a refrigerant circuit comprising a compressor, a condenser, an expander, and an evaporator;
• a first coolant line comprising:
• a first heat exchanger configured to exchange heat with the evaporator of the refrigerant circuit;
• an internal heat exchanger configured to adjust a temperature of air-conditioning air through heat exchange with a coolant;
• a branch tube disposed between the first heat exchanger and a first switching valve;
• a third switching valve disposed between the first heat exchanger and a second switching valve;
• a first water pump;
• and a coolant heater;
• the first and second switching valves respectively disposed at front and rear ends of the internal heat exchanger in the first coolant line;
• a second coolant line connected to the first and second switching valves and comprising:
• a second heat exchanger configured to exchange heat with the condenser of the refrigerant circuit;
• a radiator;
• a fourth switching valve configured to allow the coolant to selectively flow to the radiator;
• and
• a second water pump;
• a third coolant line branching off from the first coolant line and connected to the branch tube and the third switching valve, the third coolant line comprising:
• a battery;
• a first external heat exchanger;
• a fifth switching valve configured to allow the coolant to selectively flow to the first external heat exchanger;
• a sixth switching valve selectively connected to the first switching valve at a front end of the battery;
• and
• a third water pump;
• and
• a fourth coolant line branching off from the first coolant line and connected between the branch tube, the first heat exchanger, and the third switching valve, the fourth coolant line comprising:
• a PE component;
• a second external heat exchanger;
• a seventh switching valve configured to allow the coolant to selectively flow to the second external heat exchanger;
• and
• a fourth water pump.