US 12,459,329 B2
Thermal management system, control method therefor, and compressor included therein
Jung Myung Kwak, Daejeon (KR); and Yong Hee Kim, Daejeon (KR)
Assigned to HANON SYSTEMS, Daejeon (KR)
Appl. No. 18/547,159
Filed by Hanon Systems, Daejeon (KR)
PCT Filed Mar. 22, 2022, PCT No. PCT/KR2022/003942
§ 371(c)(1), (2) Date Aug. 20, 2023,
PCT Pub. No. WO2022/211342, PCT Pub. Date Oct. 6, 2022.
Claims priority of application No. 10-2021-0043587 (KR), filed on Apr. 2, 2021.
Prior Publication US 2024/0123790 A1, Apr. 18, 2024
Int. Cl. B60H 1/00 (2006.01); B60H 1/32 (2006.01); F04C 18/02 (2006.01)
CPC B60H 1/00278 (2013.01) [B60H 1/00978 (2013.01); B60H 1/00985 (2013.01); B60H 1/3205 (2013.01); B60H 2001/325 (2013.01); B60H 2001/3257 (2013.01); F04C 18/0215 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A thermal management system comprising:
a coolant circuit having a circulating coolant, and a battery heat exchanger configured to allow the coolant to exchange heat with a battery of a vehicle;
a refrigerant circuit including a compressor configured to compress a refrigerant, a first heat exchanger configured to cool the refrigerant compressed by the compressor, an expansion valve configured to expand the refrigerant cooled by the first heat exchanger, and a second heat exchanger configured to allow the refrigerant, which is expanded by the expansion valve, to exchange heat with the coolant;
a measurement means configured to measure a pressure and a temperature of the refrigerant; and
a controller configured to determine whether a battery thermal management mode operates in which the coolant circuit and the refrigerant circuit are operated and operations of cooling and heating an interior of the vehicle do not operate, detect a degree of superheat or a degree of supercooling of the refrigerant from the pressure and the temperature of the refrigerant measured by the measurement means, and determine whether a current state is a low-refrigerant state in which a refrigerant amount in the compressor is smaller than a reference refrigerant amount.