Thermal management system

Patent metadata

Field	Value
Publication number	US-11840122-B2
Application number	US-202017419284-A
Country	US
Kind code	B2
Filing date	Sep 16, 2020
Priority date	Sep 16, 2019
Publication date	Dec 12, 2023
Grant date	Dec 12, 2023

Abstract

A thermal management system includes a cooling liquid circulation flow path, a refrigerant circulation flow path and a first heat exchanger. The first heat exchanger includes a first heat exchange portion and a second heat exchange portion. The cooling liquid circulation flow path includes a first heat exchange assembly, a second heat exchange assembly and a first branch. The thermal management system has a heating mode. After passing through the first heat exchange assembly, one path of the cooling liquid flows to the first branch, and another path of the cooling liquid flows to the second heat exchange assembly. The cooling liquid after flowing through the first branch and after flowing through the second heat exchange assembly merge and then flow to the first heat exchange portion. As a result, the number of heat exchangers used by the thermal management system to recover waste heat is reduced.

First claim

What is claimed is:

1. A thermal management system, comprising: a cooling liquid circulation flow path and a refrigerant circulation flow path; the thermal management system comprising a first heat exchanger, the first heat exchanger comprising a first heat exchange portion and a second heat exchange portion which are capable of exchanging heat, a flow path of the first heat exchange portion being capable of communicating with the cooling liquid circulation flow path, a flow path of the second heat exchange portion being capable of communicating with the refrigerant circulation flow path, the cooling liquid circulation flow path comprising a first heat exchange assembly, a second heat exchange assembly and a first branch;
the thermal management system comprising a heating mode in which the refrigerant circulation flow path is communicated to form a loop; the first heat exchange assembly, the second heat exchange assembly and the first heat exchange portion being communicated to form a loop; the first heat exchange assembly, the first branch and the first heat exchange portion being communicated to form a loop; after the cooling liquid passing through the first heat exchange assembly, one path of the cooling liquid flowing to the first branch, and another path of the cooling liquid flowing to the second heat exchange assembly; the cooling liquid after flowing through the first branch and the cooling liquid after flowing through the second heat exchange assembly merging and then flowing to the first heat exchange portion, and heat of the cooling liquid circulation flow path being transferred to the refrigerant circulation flow path through the first heat exchanger;
wherein the refrigerant circulation flow path comprises a compressor, a first indoor heat exchanger, a first regulating device, an outdoor heat exchanger and a third branch; in the heating mode: the compressor, the first indoor heat exchanger, the first regulating device, the outdoor heat exchanger and the second heat exchange portion are communicated to form a loop; and the compressor, the first indoor heat exchanger, the third branch and the second heat exchange portion are communicated to form a loop, the refrigerant after flowing through the first indoor heat exchanger is divided, one path of the refrigerant flows to the third branch, and another path of the refrigerant flows to the first regulating device.

2. The thermal management system according to claim 1 , wherein the first flow regulating device comprises a first port, a second port and a third port, the first port is capable of communicating with the first heat exchange assembly, the second port is capable of communicating with the first branch, and the third port is capable of communicating with the second heat exchange assembly;
in the heating mode: the second port and the third port are both in communication with the first port, and after the cooling liquid passing through the first heat exchange assembly, the cooling liquid is divided by the first flow regulating device.

3. The thermal management system according to claim 2 , wherein the first flow regulating device is a proportional regulating valve.

4. The thermal management system according to claim 1 , wherein the cooling liquid circulation flow path further comprises a second branch; in the heating mode: the second branch and the second heat exchange assembly are in communication to form a loop, after the cooling liquid passing through the second heat exchange assembly, one path of the cooling liquid flows to the second branch, and another path of the cooling liquid flows to the first heat exchange portion.

5. The thermal management system according to claim 4 , wherein the cooling liquid circulation flow path comprises a second flow regulating device, the second flow regulating device comprises a fourth port, a fifth port and a sixth port, the fourth port is capable of communicating with the second heat exchange assembly, the fifth port is capable of communicating with the first heat exchange portion, and the sixth port is capable of communicating with the second branch;
in the heating mode: the fifth port and the sixth port are both in communication with the fourth port, and after the cooling liquid passing through the second heat exchange assembly, the cooling liquid is divided by the second flow regulating device.

6. The thermal management system according to claim 5 , wherein the second flow regulating device is a proportional regulating valve.

7. The thermal management system according to claim 1 , wherein the refrigerant circulation flow path further comprises a second indoor heat exchanger and a second regulating device;
the thermal management system further comprises a cooling mode; in the cooling mode: the compressor, the first indoor heat exchanger, the outdoor heat exchanger, the second regulating device and the second indoor heat exchanger are communicated to form a loop; and the compressor, the first indoor heat exchanger, the outdoor heat exchanger, the third branch and the second heat exchange portion are communicated to form a loop, the refrigerant after flowing through the outdoor heat exchanger is divided, one path of the refrigerant flows to the third branch, and another path of the refrigerant flows to the second indoor heat exchanger.

8. The thermal management system according to claim 7 , wherein the refrigerant circulation flow path further comprises a flow path regulating device, the flow path regulating device comprises a first connection port, a second connection port, a third connection port and a fourth connection port, the first connection port is capable of communicating with the outdoor heat exchanger, the second connection port is capable of communicating with the second heat exchange portion, both the first regulating device and the third branch are capable of communicating with the third connection port, and the fourth connection port is capable of communicating with the second heat exchanger; the flow path regulating device comprises a first working state and a second working state, in the first working state, the first connection port is in communication with the second connection port, and the third connection port is in communication with the fourth connection port; in the second working state, the first connection port is in communication with the fourth connection port, the second connection port is not in communication with the third connection port; in the heating mode: the flow path regulating device is in the first working state; and in the cooling mode: the flow path regulating device is in the second working state.

9. The thermal management system according to claim 7 , wherein the first regulating device is a combined valve, the first regulating device comprises a throttle unit valve and a conduction unit valve, the conduction unit valve is a check valve, and the throttle unit valve and the conduction unit valve are arranged in parallel;
in the heating mode: the throttle unit valve is opened, and the conduction unit valve is closed; and
in the cooling mode: the throttle unit valve is closed, and the conduction unit valve is opened.

10. The thermal management system according to claim 7 , wherein the refrigerant circulation flow path comprises a second regulating device connected on the third branch, the second regulating device is in a conducting state, or the second regulating device is in a throttling state, or the second regulating device is in a blocking state.

11. The thermal management system according to claim 7 , wherein the cooling liquid circulation flow path further comprises a second heat exchanger, the cooling mode further comprises a first working mode,
in the first wo

Assignees

• Hangzhou Sanhua Res Inst Co Ltd

Inventors

• Wang Kuiyang
• Liu Qiaofeng
• Dong Junqi
• Jia Shiwei

Classifications

• B60H1/2221

  arrangements of electric heaters for heating an intermediate liquid (B60H1/034 takes precedence) · CPC title

• B60H1/00278 Primary

  for the battery · CPC title

• B60H1/034

  from the cooling liquid of the propulsion plant and from an electric heating device · CPC title

• H01M10/613

  Cooling or keeping cold · CPC title

• H01M10/625

  Vehicles · CPC title