US 12,441,156 B2
Vehicle thermal management system and electric vehicle
Yubo Lian, Shenzhen (CN); Yilin Zhong, Shenzhen (CN); Heping Ling, Shenzhen (CN); Chunfen Wu, Shenzhen (CN); and Fangfang Lin, Shenzhen (CN)
Assigned to BYD Company Limited, Shenzhen (CN)
Appl. No. 18/027,499
Filed by BYD COMPANY LIMITED, Guangdong (CN)
PCT Filed Sep. 18, 2021, PCT No. PCT/CN2021/119447
§ 371(c)(1), (2) Date Mar. 21, 2023,
PCT Pub. No. WO2022/057936, PCT Pub. Date Mar. 24, 2022.
Claims priority of application No. 202022094143.7 (CN), filed on Sep. 21, 2020.
Prior Publication US 2023/0373264 A1, Nov. 23, 2023
Int. Cl. B60H 1/00 (2006.01); B60H 1/03 (2006.01); H01M 10/625 (2014.01); H01M 10/63 (2014.01); H01M 10/6569 (2014.01); H01M 10/66 (2014.01)
CPC B60H 1/00278 (2013.01) [B60H 1/03 (2013.01); H01M 10/625 (2015.04); H01M 10/63 (2015.04); H01M 10/6569 (2015.04); H01M 10/66 (2015.04); H01M 2220/20 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A system, comprising a first thermal management system and a second thermal management system for a high-voltage system, wherein:
the second thermal management system comprises a heat sink, a heat exchanger, and a waste heat utilization branch; a high-voltage system cooling branch passes through the high-voltage system, a water pump and the high-voltage system cooling branch are disposed on the waste heat utilization branch; a cooling liquid outlet of the heat exchanger communicates with an inlet of the waste heat utilization branch; and an outlet of the waste heat utilization branch communicates with a cooling liquid inlet of the heat exchanger; and
the first thermal management system comprises a compressor and a battery pack, a direct-cooling device is disposed on the battery pack; an outlet of the compressor communicates with a first port of the direct-cooling device; a second port of the direct-cooling device communicates with a refrigerant inlet of the heat exchanger; and a refrigerant outlet of the heat exchanger communicates with an inlet of the compressor, wherein the first thermal management system further comprises an in-vehicle condenser disposed on a first branch, an inlet of the in-vehicle condenser communicates with the outlet of the compressor, and a second throttle branch is disposed between an outlet of the in-vehicle condenser and the refrigerant inlet of the heat exchanger.