Thermal management system

1. A thermal management system for a vehicle, comprising:

a refrigerant circulation line for circulating a refrigerant, the refrigerant circulation line extending along a refrigerant circulator, a first heat exchanger, a first expander and a second heat exchanger;

a cooling water circulation line for circulating cooling water including a cooling line for cooling heating sources by exchanging heat between the cooling water and air or exchanging heat between the cooling water and the refrigerant, and a heating line for heating an interior of the vehicle by circulating cooling water and exchanging heat between the cooling water and the refrigerant passing through the first heat exchanger, wherein the heating sources are comprised of electronic parts and a battery;

a first direction changer mounted along the heating line and the cooling line and configured to connect the cooling line to the heating line or block the cooling line from the heating line according to an interior cooling mode or an interior heating mode; and

a second direction changer and a third direction changer selectively dividing the cooling line into a first cooling line extending along the electronic parts and the first heat exchanger, and a second cooling line extending along the battery;

wherein in the interior cooling mode, the heating line and the cooling line are connected with each other via the second and third direction changers;

wherein when a cooling load is small in the interior cooling mode, the heating line, the first cooling line and the second cooling line are connected with one another, and when a cooling load is large in the interior cooling mode, the heating line and the first cooling line are connected with each other while the second cooling line is blocked from the heating line and the first cooling line to form an independent line such that the battery and electronic parts are on respective cooling circuits from one another.

2. The thermal management system according to claim 1 , wherein a third heat exchanger is mounted along the first cooling line connected with the heating line to exchange heat with air.

3. The thermal management system according to claim 1 , wherein the second cooling line exchanges heat through a third heat exchanger mounted along the refrigerant circulation line.

4. The thermal management system according to claim 1 , wherein in a scenario in which the refrigerant circulator is not operated, heating is carried out only using the heating sources.

5. The thermal management system according to claim 4 , wherein the heating sources further include an electric heater is operated for additional heating.

6. The thermal management system according to claim 1 , wherein in the interior heating mode, each of the heating line and the cooling line has a closed loop,

wherein the refrigerant circulation line is mounted with a third heat exchanger which exchanges heat with the cooling water, and

wherein the cooling line passes along the battery and the electronic parts as heating sources.

7. The thermal management system according to claim 6 , wherein if a temperature of the battery is high, the cooling water flows through the battery and the electronic parts along the cooling line.

8. The thermal management system according to claim 6 , wherein if a temperature of the battery is low, the cooling water flows only through the electronic parts along the cooling line.

9. The thermal management system according to claim 6 , wherein the second and third direction changers are configured to selectively control whether the cooling water passes through the battery or is blocked from the battery.

10. The thermal management system according to claim 1 , wherein the cooling line comprises:

a first connection line branching off from one side of the cooling line and being connected with the heating line; and

a second connection line branching off from the other side of the cooling line and being connected with the heating line.

11. The thermal management system according to claim 10 , wherein the first connection line, the second connection line, and the heating line are connected with one another or blocked from one another by the first direction changer.

12. The thermal management system according to claim 10 , wherein when the heating line and the cooling line are connected with each other, electronic parts are arranged in the first connection line and the second connection line in which cooling water flows from the heating line to the cooling line.

13. The thermal management system according to claim 12 , wherein when the heating line and the cooling line are blocked from each other, the electronic parts are connected to the cooling line by the first connection line and the second connection line to be cooled by the cooling water.

14. A thermal management system for a vehicle, comprising:

a refrigerant circulation line for circulating a refrigerant, wherein the refrigerant circulation line extends along a refrigerant circulator, a first heat exchanger and a first expander;

a cooling water circulation line for circulating cooling water, the cooling water circulation line including a cooling line for cooling heating sources by exchanging heat between the cooling water and air, or exchanging heat between the cooling water and the refrigerant, and a heating line for heating an interior of the vehicle by circulating cooling water and exchanging heat between the cooling water and the refrigerant passing through the first heat exchanger;

a first direction changer mounted along the heating line and the cooling line and configured to selectively connect the cooling line to the heating line or block the cooling line from the heating line according to an interior cooling mode or an interior heating mode;

a second direction changer and a third direction changer selectively dividing the cooling line into a first cooling line extending along electronic parts and the first heat exchanger, and a second cooling line extending along a battery;

wherein in the interior cooling mode, the heating line and the cooling line are connected with each other via the second and third direction changers, and wherein when a cooling load is small in the interior cooling mode, the heating line, the first cooling line and the second cooling line are connected with one another, and when the cooling load is large in the interior cooling mode, the heating line and the first cooling line are connected with each other while the second cooling line is blocked from the heating line to form an independent line such that the battery and electronic parts are on respective cooling circuits from one another.