US 12,257,877 B2
Vehicle thermal management system of an electric vehicle and control method thereof
Haijun Xie, Shanghai (CN); Yujun Dong, Shanghai (CN); Xinding Guan, Shanghai (CN); Henry Xiaoli Huai, Shanghai (CN); and Gangping Fu, Shanghai (CN)
Assigned to Kelvin New Energy Technology Co., Ltd., Shanghai (CN)
Filed by Kelvin New Energy Technology Co., Ltd., Shanghai (CN)
Filed on Dec. 14, 2022, as Appl. No. 18/081,227.
Claims priority of application No. 202210327951.4 (CN), filed on Mar. 30, 2022.
Prior Publication US 2023/0356559 A1, Nov. 9, 2023
Int. Cl. B60H 1/00 (2006.01); B60H 1/32 (2006.01)
CPC B60H 1/00278 (2013.01) [B60H 1/00392 (2013.01); B60H 1/00735 (2013.01); B60H 1/00885 (2013.01); B60H 1/32284 (2019.05); B60H 2001/00307 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A vehicle thermal management system of an electric vehicle, comprising:
a refrigeration assembly, a first four-way reversing valve, a water-cooled solenoid valve, a cabin heat exchanger, a motor-drive-side heat exchange assembly, a battery heat exchanger and a radiator tank;
wherein the refrigeration assembly comprises a compressor, two condensers, and two evaporators, wherein the compressor is configured to communicate with one of the two condensers and at least one of the two evaporators, the two condensers are an air-cooled condenser and a water-cooled condenser respectively, and the two evaporators are a cabin evaporator and a chiller respectively;
wherein the first four-way reversing valve comprises a first reversing inlet, a second reversing inlet, a first reversing outlet, and a second reversing outlet, the first reversing inlet communicates with one of the first reversing outlet or the second reversing outlet, the second reversing inlet communicates with another one of the first reversing outlet or the second reversing outlet, the first reversing inlet communicates with one of an outlet of the radiator tank or a heat exchange outlet of the water-cooled condenser, the second reversing inlet communicates with an outlet of the battery heat exchanger, the first reversing outlet communicates with a heat exchange inlet of the chiller, and the second reversing outlet communicates with an inlet of the motor-drive-side heat exchange assembly;
wherein an outlet of the water-cooled solenoid valve is located between the outlet of the radiator tank and the first reversing inlet, and an inlet of the water-cooled solenoid valve is located between the cabin evaporator and the cabin heat exchanger;
wherein the cabin heat exchanger is configured to heat a cabin in a case where one of following conditions are satisfied:
the water-cooled solenoid valve is opened, the first reversing inlet and the first reversing outlet are in communication, an inlet of the cabin heat exchanger is configured to communicate with an outlet of the motor-drive-side heat exchange assembly, and an outlet of the cabin heat exchanger is configured to communicate with the heat exchange inlet of the chiller; or
the water-cooled solenoid valve is closed, the inlet of the cabin heat exchanger is configured to communicate with a heat exchange outlet of the cabin evaporator, and the outlet of the cabin heat exchanger is configured to communicate with a heat exchange inlet of the cabin evaporator;
wherein the motor-drive-side heat exchange assembly s configured to cool a motor drive in a case where the following condition is satisfied:
the water-cooled solenoid valve is closed, the first reversing inlet and the first reversing outlet are in communication, the second reversing inlet and the second reversing outlet are in communication, the inlet of the motor-drive-side heat exchange assembly is configured to communicate with a heat exchange outlet of the chiller, and the outlet of the motor-drive-side heat exchange assembly is configured to communicate with a heat exchange inlet of the water-cooled condenser;
wherein the battery heat exchanger is configured to heat or cool a battery, wherein an inlet of the battery heat exchanger is configured to communicate with the heat exchange outlet of the chiller, and an outlet of the battery heat exchanger is configured to communicate with one of the inlet of the motor-drive-side heat exchange assembly or the heat exchange inlet of the chiller; and
wherein an inlet of the radiator tank is configured to communicate with the outlet of the motor-drive-side heat exchange assembly, and the outlet of the radiator tank is configured to communicate with one of the inlet of the motor-drive-side heat exchange assembly or the heat exchange inlet of the chiller.