US 12,451,501 B2
Device and method for controlling fuel cell system
Jun Young Park, Gyeonggi-do (KR); Seong Cheol Jeong, Gyeonggi-do (KR); Dae Jong Kim, Gyeonggi-do (KR); and Jae Won Jung, Gyeonggi-do (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. 11, 2022, as Appl. No. 17/963,610.
Claims priority of application No. 10-2021-0150198 (KR), filed on Nov. 4, 2021.
Prior Publication US 2023/0147324 A1, May 11, 2023
Int. Cl. H01M 8/04537 (2016.01); H01M 8/0438 (2016.01); H01M 8/04664 (2016.01); H01M 8/04746 (2016.01); H01M 8/04858 (2016.01)
CPC H01M 8/04589 (2013.01) [H01M 8/0438 (2013.01); H01M 8/04559 (2013.01); H01M 8/04679 (2013.01); H01M 8/04753 (2013.01); H01M 8/0488 (2013.01); H01M 8/04888 (2013.01); H01M 8/0491 (2013.01); H01M 8/04917 (2013.01); H01M 2250/20 (2013.01)] 14 Claims
OG exemplary drawing
 
8. A method of controlling a fuel cell system, the method comprising:
determining an output current limit value of a fuel cell stack to be a value decreased to a predetermined level or a value increased to a predetermined level;
detecting a present voltage of a high voltage bus line;
determining a voltage limit value of the fuel cell stack to be a value increased to a predetermined level or a value decreased to a predetermined level; and
limiting a motoring current on the basis of a smallest value among the output current limit value determined in the determining of the output current limit value of the fuel cell stack, the voltage limit value determined in the determining of the voltage limit value of the fuel cell stack, and the detected present voltage of the high voltage bus line.