Electric vehicle thermal management system and vehicle

Patent metadata

Field	Value
Publication number	US-12358337-B2
Application number	US-202118031283-A
Country	US
Kind code	B2
Filing date	Jan 21, 2021
Priority date	Jan 21, 2021
Publication date	Jul 15, 2025
Grant date	Jul 15, 2025

Abstract

An electric vehicle thermal management system, comprising a water tank ( 1 ), a liquid-gas separator ( 2 ), a four-way valve ( 3 ), a first water pump ( 4 ), a second water pump ( 5 ), a battery water jacket ( 6 ), an electric appliance water jacket ( 7 ) which is simultaneously used for a voltage converter ( 71 ) and a vehicle-mounted charger ( 72 ), a radiator ( 8 ), a heat exchanger main body ( 91 ) of a battery cooler ( 9 ), an electric motor controller water jacket ( 10 ) and/or an electric motor water jacket ( 11 ). The four-way valve ( 3 ) comprises a first valve port, a second valve port, a third valve port and a fourth valve port. An outlet of the radiator ( 8 ) and the water tank ( 1 ) are both in communication with the first valve port. The second valve port, the heat exchanger main body ( 91 ), the liquid-gas separator ( 2 ), the first water pump ( 4 ), the battery water jacket ( 6 ).

First claim

What is claimed is:

1. A thermal management system for an electric vehicle, comprising a water tank, a liquid-gas separator, a four-way valve, a first water pump, a second water pump, a battery water jacket, an electric appliance water jacket which is simultaneously used for a voltage converter and a vehicle-mounted charger, a radiator, a heat exchanger main body of a battery cooler, an electric motor controller water jacket and/or an electric motor water jacket, wherein the four-way valve comprises a first valve port, a second valve port, a third valve port and a fourth valve port; an outlet of the radiator and the water tank are both in communication with the first valve port; the second valve port, the heat exchanger main body, the liquid-gas separator, the first water pump, the battery water jacket and the third valve port are sequentially in communication with each other, and the first water pump is used for pumping a cooling liquid of the liquid-gas separator into the battery water jacket; the fourth valve port, the second water pump, the electric appliance water jacket, the electric motor water jacket and/or the electric motor controller water jacket and an inlet of the radiator are sequentially in communication with each other; the second water pump is used for pumping a cooling liquid flowing out of the fourth valve port into the electric appliance water jacket; and the battery cooler is provided with a cooling liquid inlet communicating with an inlet of the heat exchanger main body, a first cooling liquid outlet communicating with an outlet of the heat exchanger main body, and a second cooling liquid outlet directly communicating with the cooling liquid inlet.

2. The thermal management system for the electric vehicle according to claim 1 , wherein an air passage is further provided between the water tank and the inlet of the radiator.

3. The thermal management system for the electric vehicle according to claim 1 , wherein the water tank and the liquid-gas separator are integrally provided.

4. The thermal management system for the electric vehicle according to claim 1 , wherein a water temperature sensor is provided between the downstream of the electric appliance water jacket and the upstream of the electric motor water jacket and/or the electric motor controller water jacket.

5. The thermal management system for the electric vehicle according to claim 1 , wherein the electric vehicle thermal management system is configured for forming a series cooling circuit or a series heat recovery circuit with the first valve port and the second valve port communicating with each other, the third valve port and the fourth valve port communicating with each other, and both the first water pump and the second water pump operating.

6. The thermal management system for the electric vehicle according to claim 1 , wherein the electric vehicle thermal management system is configured for forming an electric motor cooling circuit with the first valve port and the fourth valve port communicating with each other, the second valve port and the third valve port both closed, and the second water pump operating.

7. The thermal management system for the electric vehicle according to claim 1 , wherein the electric vehicle thermal management system is configured for forming a small battery-circulation circuit with the second valve port and the third valve port communicating with each other, the first valve port and the fourth valve port both closed, and the first water pump operating.

8. The thermal management system for the electric vehicle according to claim 1 , wherein:
the electric vehicle thermal management system further comprises a PTC heating assembly and a three-way valve, wherein the three-way valve comprises a fifth valve port, a sixth valve port and a seventh valve port; the fifth valve port communicates with the second cooling liquid outlet; the sixth valve port communicates with a water outlet of the PTC heating assembly; and the seventh valve port is connected to the first cooling liquid outlet.

9. The thermal management system for the electric vehicle according to claim 8 , wherein the PTC heating assembly comprises:
a third water pump, a high voltage coolant heater and a warm air core body connected in sequence, wherein the third water pump is configured for pumping the cooling liquid from the second cooling liquid outlet into the high voltage coolant heater.

10. The thermal management system for the electric vehicle according to claim 9 , wherein the third water pump and the high voltage coolant heater are integrally manufactured.

11. The thermal management system for the electric vehicle according to claim 9 , wherein the electric vehicle thermal management system is configured for forming a PTC individual heating battery circuit with the second valve port and the third valve port communicating with each other, the first valve port and the fourth valve port both closed, the sixth valve port and the seventh valve port communicating with each other, the fifth valve port closed, and the first water pump and the third water pump both operating.

12. The thermal management system for the electric vehicle according to claim 9 , further comprising:
a blower fan for generating an airflow that flows into a passenger compartment after being blown towards the warm air core body.

13. The thermal management system for the electric vehicle according to claim 12 , wherein the electric vehicle thermal management system is further configured for forming a PTC individual heating passenger compartment circuit with both the third water pump and the blower opened, the fifth valve port and the sixth valve port communicating with each other, and the seventh valve port closed.

14. A vehicle, comprising a battery, a voltage converter, an on-board charger, an electric motor controller and/or an electric motor, and a electric vehicle thermal management system comprising a water tank, a liquid-gas separator, a four-way valve, a first water pump, a second water pump, a battery water jacket, an electric appliance water jacket which is simultaneously used for a voltage converter and a vehicle-mounted charger, a radiator, a heat exchanger main body of a battery cooler, an electric motor controller water jacket and/or an electric motor water jacket, wherein the four-way valve comprises a first valve port, a second valve port, a third valve port and a fourth valve port; an outlet of the radiator and the water tank are both in communication with the first valve port; the second valve port, the heat exchanger main body, the liquid-gas separator, the first water pump, the battery water jacket and the third valve port are sequentially in communication with each other, and the first water pump is used for pumping a cooling liquid of the liquid-gas separator into the battery water jacket; the fourth valve port, the second water pump, the electric appliance water jacket, the electric motor water jacket and/or the electric motor controller water jacket and an inlet of the radiator are sequentially in communication with each other; the second water pump is used for pumping a cooling liquid flowing out of the fourth valve port into the electric appliance water jacket; and the battery cooler is provided with a cooling liquid inlet communicating with an inlet of the heat exchanger main body, a first cooling liquid outlet communicating with an outlet of the heat exchanger main body, and a second cooling liquid outlet directly communicating with the cooling liquid inlet.

15. The vehicle according to claim 14 , wherein the electric vehicle thermal management system is configured for formi

Assignees

• Geely Holding Group Co Ltd
• Ningbo Geely Automobile Res & Development Co Ltd

Inventors

• Dai Haijiang
• Xu Junbo
• Sun Chao
• Wu Lian

Classifications

• B60K11/04

  Arrangement or mounting of radiators, radiator shutters, or radiator blinds · CPC title

• B60H2001/00307

  Component temperature regulation using a liquid flow · CPC title

• H01M10/6567

  Liquids · CPC title

• B60K2001/003

  with means for cooling the electrical propulsion units · CPC title

• B60K11/02

  with liquid cooling · CPC title