Thermal management system of vehicle

A thermal management system of a vehicle, the system comprising:

• an air supply device configured to draw and supply air, wherein the air is ambient air;
• an air cycle apparatus comprising a compressor, a turbine, and a motor, connected to the air supply device through a first line, and configured to compress or expand the air supplied from the air supply device to be changed to a high temperature air or a low temperature air;
• an air distribution device connected to the air cycle apparatus through a second line;
• a cabin room connected to the air distribution device through the second line and configured to receive the high temperature air or the low temperature air supplied from the air distribution device through the second line;
• a first heat-exchanger connected to the air cycle apparatus through a first connection line and configured to perform heat-exchange on the high temperature air compressed by and supplied from the air cycle apparatus;
• a second heat-exchanger connected to the first heat-exchanger through the first connection line, connected to the air cycle apparatus through a second connection line, and configured to perform heat-exchange on the air introduced through the first connection line;
• a third line configured to selectively connect the second heat-exchanger and the air distribution device and to selectively supply the air having heat-exchanged while passing through the second heat-exchanger to the air distribution device;
• a first valve on the first connection line between the air cycle apparatus and the first heat-exchanger;
• a second valve on the first connection line between the first heat-exchanger and the second heat-exchanger;
• a first bypass line interconnecting the first valve and the second valve such that the air flowing into the first connection line from the air cycle apparatus may be supplied to the second heat-exchanger by detouring around the first heat-exchanger;
• and
• a second bypass line interconnecting the second valve and the second connection line between the second heat-exchanger and the air cycle apparatus.