US 12,269,317 B2
Compressor control method for vehicle
Jae-Eun Jeong, Hwaseong-si (KR); Wan Je Cho, Hwaseong-si (KR); Tae Hee Kim, Ansan-si (KR); Hyunjae Lee, Seongnam-si (KR); Namho Park, Suwon-si (KR); and Seong-Bin Jeong, Hwaseong-si (KR)
Assigned to Hyundai Motor Company, Seoul (KR); and Kia Corporation, Seoul (KR)
Filed by Hyundai Motor Company, Seoul (KR); and Kia Corporation, Seoul (KR)
Filed on Oct. 17, 2022, as Appl. No. 17/967,574.
Claims priority of application No. 10-2022-0060566 (KR), filed on May 18, 2022.
Prior Publication US 2023/0398837 A1, Dec. 14, 2023
Int. Cl. B60H 1/00 (2006.01)
CPC B60H 1/00978 (2013.01) [B60H 1/00899 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for controlling a compressor of a vehicle, the method comprising:
selectively controlling an operation of the compressor by determining and comparing a discharge pressure of the compressor and a temperature of an inverter with predetermined values based on data detected in real time when the compressor is operated to cool or heat an interior of the vehicle; and
operating a protection mode to prevent thermal burnout of the inverter in response to a determination that the discharge pressure of the compressor is higher than an operation stop pressure;
wherein selectively controlling the operation of the compressor comprises:
driving the compressor according to an indoor cooling or heating demand of the vehicle;
determining whether the discharge pressure of the compressor is higher than the operation stop pressure based on the data detected in real time;
determining whether the temperature of the inverter is higher than an operation stop temperature in response to a determination that the discharge pressure of the compressor is not higher than the operation stop pressure; and
stopping the operation of the compressor in response to a determination that the temperature of the inverter is higher than the operation stop temperature;
wherein selectively controlling the operation of the compressor further comprises:
determining whether the discharge pressure of the compressor is lower than an operation release pressure and whether the temperature of the inverter is lower than an operation release temperature when the operation of the compressor is stopped; and
restarting the compressor in response to a determination that the discharge pressure of the compressor is lower than the operation release pressure and the temperature of the inverter is lower than the operation release temperature; and
wherein operating the protection mode comprises:
lowering revolutions per minute (RPMs) of the compressor in response to a determination that the discharge pressure of the compressor is higher than the operation stop pressure;
determining whether a temperature change rate of the inverter calculated based on the data detected in real time is higher than a predetermined change rate;
limiting a current value applied to the compressor in response to a determination that the temperature change rate of the inverter is higher than the predetermined change rate;
lowering the operation stop temperature and the operation release temperature of the inverter;
determining whether the temperature of the inverter is higher than the lowered operation stop temperature; and
operating the protection mode in response to a determination that the temperature of the inverter is higher than the lowered operation stop temperature.