Thermal Management System and Electric Vehicle

Patent metadata

Field	Value
Publication number	US-2025229605-A1
Application number	US-202519094032-A
Country	US
Kind code	A1
Filing date	Mar 28, 2025
Priority date	Sep 30, 2022
Publication date	Jul 17, 2025
Grant date	—

Abstract

A thermal management system includes a thermal system loop, a battery heat exchange loop, an electric-drive heat dissipation loop, and a heater. The heater may be disposed in any one of the thermal system loop, the battery heat exchange loop, and the electric-drive heat dissipation loop. The heater is configured to heat a first cooling medium flowing through a compressor in the thermal system loop, to increase a temperature and a pressure of the first cooling medium entering the compressor. An electric vehicle is provided, including a controller and the thermal management system. In this way, in a low-temperature environment, the compressor can also be turned on normally, so that the thermal management system can heat a passenger compartment of the electric vehicle.

First claim

1 . A thermal management system, comprising:
a first valve body configured to switch between connection states; a water pipeline comprising a first inlet and a first outlet that are separately coupled to the first valve body; a compressor comprising a second inlet and a second outlet; a cooler comprising:
a first path comprising:
a third inlet coupled to the second outlet; and
a third outlet coupled to the second inlet to form a first liquid cooling loop; and

a second path isolated from the first path and comprising a fourth inlet and a fourth outlet, that are separately coupled to the first valve body, wherein the connection states comprise a first connection state, and wherein the first connection state comprises connecting the second path and the water pipeline to form a first water loop so that the first water loop and the first liquid cooling loop perform heat exchange; and
a heater disposed in the first liquid cooling loop, at the fourth inlet, or on the water pipeline.

2 . The thermal management system of claim 1 , wherein the water pipeline comprises a first pipeline, and wherein the first valve body comprises:
a first port; a second pert; a fifth port coupled to the fourth inlet; and a sixth port coupled to the fourth outlet, wherein the thermal management system further comprises: a first condenser comprising:
a third path located between the compressor and the first path and comprising:
a fifth inlet coupled to the second outlet; and
a fifth outlet coupled to the third inlet; and

a fourth path isolated from the third path and comprising:
a sixth inlet; and
a sixth outlet coupled to the first port;

an air conditioner box located in a passenger compartment and comprising.
a fifth path comprising:
a seventh inlet coupled to the second outlet; and
a seventh outlet coupled to the second inlet; and

a sixth path isolated from the fifth path and
a first pump comprising an eighth inlet coupled to the second port and an eighth outlet, and wherein the first pipeline sequentially passes through the first pump, the sixth path, and the fourth path.

3 . The thermal management system of claim 2 , wherein the connection states further comprise a second co for o the second connection state comprises connecting the first pipeline to form a second water loop that performs heat exchange with the first liquid cooling loop via the air conditioner box.

4 . The thermal management system of claim 2 , wherein the water pipeline further comprises a second pipeline, wherein the first valve body further comprises a third port and a fourth port, and wherein the thermal management system further comprises:
a battery comprising a ninth inlet and a ninth outlet coupled to the fourth port: and a second pump comprising:
a tenth inlet coupled to the third port; and
a tenth outlet coupled to the ninth inlet, and
wherein the second pipeline sequentially passes through the second pump and the battery.

5 . The thermal management system of claim 4 , wherein the water pipeline further comprises a second three-way valve that comprises:
a fifth port coupled to the tenth outlet; a sixth port coupled to the ninth inlet; and, a seventh port coupled to the fourth port.

6 . The thermal management system of claim 4 , wherein the water pipeline further comprises a first three-way valve that comprises:
a fifth port, coupled to the sixth inlet; a sixth port coupled to the eighth outlet; and a seventh port coupled to the tenth inlet.

7 . The thermal management system of claim 6 , further comprising a one-way valve disposed between the tenth inlet and the sixth inlet and configured to enable the tenth inlet and the sixth inlet to communicate unidirectionally.

8 . The thermal management system of claim 7 , wherein connecting the second path and the water pipeline comprises connecting the second path of the cooler and the second pipeline, and wherein the connection states further comprise:
a second connection state comprising separately connecting the first pipeline and the second pipeline to form a third water loop that performs heat exchange with the first liquid cooling loop via the air conditioner box; or a third connection state comprising connecting the first pipeline and the second pipeline to form a fourth water loop that performs heat exchange with the first liquid cooling loop via the air conditioner box.

9 . The thermal management system of claim 4 , wherein the water pipeline further comprises a third pipeline, wherein the first valve body further comprises a seventh port, an eighth port, and a ninth port, wherein the thermal management system further comprises:
a third pump comprising an eleventh inlet and an eleventh outlet coupled to the eighth port; and an electric-drive apparatus comprising:
a twelfth inlet couplet to the seventh port and/or the ninth port; and
a twelfth outlet coupled to the eleventh inlet, and
wherein the third pipeline passes through the electric-drive apparatus and the third pump.

10 . The thermal management system of claim 9 , wherein the heater comprises a thirteenth inlet and a thirteenth outlet coupled to the eleventh inlet. and wherein when the heater is disposed on the third pipeline, the water pipeline further comprises a third three-way valve:
a tenth port coupled to the seventh port or the ninth port; an eleventh port coupled to the twelfth inlet; and a twelfth port; coupled to thirteen inlet.

11 . The thermal management system of claim 10 , wherein the water pipeline further comprises a thermal management assembly in a front compartment, and wherein the thermal management assembly comprises:
a fourteenth inlet coupled to the seventh port; and a fourteenth outlet coupled to the twelfth inlet.

12 . The thermal management system of claim 10 , wherein connecting the second path and the water pipeline comprises:
connecting the second path of the cooler and the third pipeline; or connecting the second path of the cooler, the second pipeline, and the third pipeline.

13 . An electric vehicle, comprising:
a thermal management system, comprising:
a first valve body configured to switch between connection states;
a water pipeline comprising a first inlet and a first outlet that are separately coupled to the first valve body:
a compressor comprising a second inlet and a second outlet;
a cooler comprising:
a first path comprising:
a third inlet coupled to the second outlet; and
a third outlet coupled to the second inlet to form a first liquid cooling loop; and

a second path isolated from the first path and comprising a fourth inlet and a fourth outlet that are separately coupled to the first valve body, wherein the connection states comprise a first connection state, and wherein the first connection state comprises connecting the second path and the water pipeline to form a first water loop so that the first water loop and the first liquid cooling loop perform heat exchange; and

a heater disposed in the first liquid cooling loop, at the fourth inlet, or on the water pipeline; and
a controller coupled to the first valve body and configured to control the first valve body to switch between the connection states. pipeline; and

14 . A thermal management system, comprising:
a thermal system loop comprising:
a compressor comprising a first inlet and a first outlet;
a cooler comprising:
a first path configured to circulate a first cooling medium with the compressor, wherein the first path comprises:
a second inlet coupled to the first outlet; and
a second outlet coupled to the first inlet; and

a second path isolated f

Assignees

• Shenzhen Yinwang Intelligent Technology Co Ltd

Inventors

• Hu Haomang
• Li Hao
• Wang Jinlong

Classifications

• B60Y2200/91

  Electric vehicles · CPC title

• B60H1/00278 Primary

  for the battery · CPC title

• B60H1/3213

  for increasing the efficiency in a vehicle heat pump · CPC title

• B60H1/00392

  for electric vehicles having only electric drive means · CPC title

• B60H1/00899

  Controlling the flow of liquid in a heat pump system (controlling the properties of the refrigerant liquid, e.g. pressure or temperature, B60H1/3204) · CPC title