US 11,757,113 B2
Method and system for correcting offset of hydrogen pressure sensor
Seong Cheol Jeong, Suwon-si (KR); Jong Gyun Kim, Yongin-si (KR); and Jun Young Park, Suwon-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 Aug. 31, 2021, as Appl. No. 17/462,669.
Claims priority of application No. 10-2020-0174587 (KR), filed on Dec. 14, 2020.
Prior Publication US 2022/0190366 A1, Jun. 16, 2022
Int. Cl. H01M 8/04537 (2016.01); H01M 8/04746 (2016.01); H01M 8/0438 (2016.01); H01M 8/04119 (2016.01); G01L 27/00 (2006.01); H01M 8/04302 (2016.01)
CPC H01M 8/04302 (2016.02) [H01M 8/04119 (2013.01); H01M 8/04559 (2013.01); H01M 8/04753 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A method for correcting an offset of a hydrogen pressure sensor, comprising:
checking, by a control unit, whether hydrogen is normally supplied to a fuel cell stack;
constantly supplying the hydrogen to the fuel cell stack;
determining whether an offset of the hydrogen pressure sensor needs to be corrected based on a stop time before the fuel cell stack starts and a magnitude of an output voltage of the fuel cell stack;
calculating an offset correction value when the offset of the hydrogen pressure sensor needs to be corrected; and
correcting the offset of the hydrogen pressure sensor and starting the fuel cell stack;
wherein in the step of determining whether the offset of the hydrogen pressure sensor needs to be corrected, it is determined that the offset of the hydrogen pressure sensor needs to be corrected when the stop time before the starting of the fuel cell stack is a predetermined time or more.