Heat management system

Patent metadata

Field	Value
Publication number	US-11959668-B2
Application number	US-201917286064-A
Country	US
Kind code	B2
Filing date	Oct 14, 2019
Priority date	Oct 19, 2018
Publication date	Apr 16, 2024
Grant date	Apr 16, 2024

Abstract

A heat management system which includes: a refrigerant circulation line which includes a compressor, a water cooling-type condenser, a first expansion valve, an air cooling-type condenser, a second expansion valve, and an evaporator, and cools the indoor space by circulating a refrigerant; a heating line which heats the indoor space by circulating cooling water which exchanges heat with the refrigerant through the water cooling-type condenser; a first cooling line which cools a battery by circulating cooling water which exchanges heat with air or the refrigerant; and a second cooling line which cools electric components including a driving motor, by circulating cooling water which exchanges heat with air or the refrigerant. The heat management system enables efficient heat management of electric components and a battery in a vehicle as well as cooling and heating of the vehicle.

First claim

The invention claimed is:

1. A heat management system comprising:
a refrigerant circulation line including a compressor, a water-cooled condenser, a first expansion valve, an air-cooled condenser, a second expansion valve, an evaporator, a refrigerant heat exchanger heat-exchanging a refrigerant flowing into the second expansion valve and the refrigerant discharged from the evaporator with each other, and a first refrigerant bypass line allowing the refrigerant passing through the water-cooled condenser to bypass the first expansion valve and the air-cooled condenser, and circulating the refrigerant to cool an indoor area;
a heating line heating the indoor area by circulating a coolant heat-exchanged with the refrigerant through the water-cooled condenser;
a first cooling line cooling a battery by circulating the coolant heat-exchanged with air or the refrigerant; and
a second cooling line cooling an electric component including a drive motor by circulating the coolant heat-exchanged with air or the refrigerant.

2. The heat management system of claim 1 , wherein the water-cooled condenser receives coolant directly from the heating line.

3. The heat management system of claim 1 , wherein the first cooling line includes a first radiator for cooling the coolant with air.

4. The heat management system of claim 1 , wherein the first cooling line and the second cooling line each include a reservoir tank and for storing the coolant, respectively.

5. The heat management system of claim 1 , wherein the first cooling line and the second cooling line include an integral reservoir tank for storing the coolant, and an internal space of the reservoir tank is partitioned by a partition so that the coolant flowing along the first cooling line and the coolant flowing along the second cooling line are not mixed with each other in the reservoir tank.

6. The heat management system of claim 1 , wherein the heating line includes a heater core heating the indoor area using heated air by heat-exchanging the coolant heat-exchanged with the refrigerant through the water-cooled condenser and air introduced to the indoor area, and
the heat management system further comprising:
an air heating heater configured separately from the heating line and heating an indoor area by directly heating air introduced to the indoor area.

7. The heat management system of claim 1 , wherein, in a battery only cooling mode, the second expansion valve is closed and the refrigerant does not pass through the evaporator.

8. The heat management system of claim 1 , wherein, in a battery temperature rising mode, the refrigerant is not circulated in the refrigerant circulation line.

9. The heat management system of claim 1 , wherein, in a battery temperature rising mode, the refrigerant is not circulated in the second cooling line.

10. The heat management system of claim 1 , wherein, in a mild heating mode, the refrigerant is not circulated in the refrigerant circulation line.

11. The heat management system of claim 1 , wherein, in a dehumidification heating mode, the refrigerant does not flow to the air-cooled condenser, and the refrigerant flows to the first refrigerant bypass line.

12. The heat management system of claim 1 , wherein the first cooling line includes a first connection line branched from one side of the first cooling line and connected to the heating line; and a second connection line branched from the other side of the first cooling line and connected to the heating line.

13. The heat management system of claim 12 , wherein the first connection line, the second connection line, and the heating line are connected to a first directional valve, and the first cooling line and the heating line are connected to each other or blocked in connection by the first directional valve.

14. The heat management system of claim 1 , wherein the second cooling line includes a first connection line branched from one side of the second cooling line and connected to the first cooling line; and a second connection line branched from the other side of the second cooling line and connected to the first cooling line.

15. The heat management system of claim 14 , wherein the second cooling line and the first connection line are connected by a first directional valve, the second cooling line and the second connection line are connected by a second directional valve, and the first cooling line and the second cooling line is connected to each other or blocked in connection by the first directional valve and the second directional valve.

16. The heat management system of claim 1 , wherein a drive motor of the electric component includes a front wheel drive motor and a rear wheel drive motor, and any one of a first electric component including the front wheel drive motor and a second electric component including the rear wheel drive motor is disposed on the first cooling line and the other is disposed on the second cooling line.

17. The heat management system of claim 16 , wherein first cooling line includes:
a first connection line branched from one side of the first cooling line and connected to the heating line; and
a second connection line branched from the other side of the first cooling line and connected to the heating line, and the first electric component or the second electric component is disposed on the second connection line.

18. The heat management system of claim 1 , wherein the second cooling line includes a first radiator for cooling the coolant with air.

19. The heat management system of claim 18 , wherein the second cooling line further includes a first coolant pump for circulating the coolant.

20. The heat management system of claim 1 , wherein the refrigerant circulation line further includes a third expansion valve throttling or bypassing the refrigerant discharged from the water-cooled condenser or blocking a flow of the refrigerant; and a chiller heat-exchanging the refrigerant discharged from the third expansion valve with coolant of the first cooling line.

21. The heat management system of claim 20 , wherein the first cooling line includes a first connection line connected in parallel with the battery and passing through the chiller, and the first connection line is connected to the first cooling line by the first directional valve so that the coolant flows in the first connection line or a flow of the coolant is blocked by the first directional valve.

22. The heat management system of claim 20 , wherein heating line includes a heater core heating an indoor area using air heated by heat-exchanging the coolant heat-exchanged with the refrigerant through the water-cooled condenser and air introduced to the indoor area; and the coolant heater disposed in front of the heater core in a flow direction of the coolant to heat the coolant.

23. The heat management system of claim 20 , wherein, in a mild cooling mode, the third expansion valve is closed so that the refrigerant does not pass through the chiller.

Assignees

• Hanon Systems

Inventors

• Lee Hae-Jun
• Lee Sung Je
• Hwang In-Guk

Classifications

• F25B25/005 Primary

  using primary and secondary systems · CPC title

• B60H1/00278

  for the battery · CPC title

• B60H1/00392

  for electric vehicles having only electric drive means · CPC title

• B60H1/00885

  Controlling the flow of heating or cooling liquid, e.g. valves or pumps (B60H1/00899 takes precedence; constructions of valves B60H1/00485) · CPC title

• B60H1/00914

  where the flow direction of the refrigerant does not change and there is a bypass of the condenser · CPC title