US 12,431,521 B2
Method for controlling multiple fuel cells of fuel cell vehicle
Sang Pil Jang, Anyang-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. 24, 2022, as Appl. No. 17/972,108.
Claims priority of application No. 10-2022-0060174 (KR), filed on May 17, 2022.
Prior Publication US 2023/0378503 A1, Nov. 23, 2023
Int. Cl. H01M 8/04 (2016.01); H01M 8/04537 (2016.01); H01M 8/04858 (2016.01)
CPC H01M 8/0494 (2013.01) [H01M 8/04559 (2013.01); H01M 2250/20 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method for controlling multiple fuel cells of a fuel cell vehicle, the method comprising:
equally controlling, by a controller, power generation amounts of each of the fuel cells;
deriving, by the controller, differences between output voltages of each of the fuel cells in a state in which the power generation amounts of each of the fuel cells are equal, and determining whether or not differential control of the power generation amounts of each of the fuel cells is required based on the differences between the output voltages of each of the fuel cells;
correcting, by the controller, power generation control values of each of the fuel cells depending on the differences between the output voltages of each of the fuel cells; and
differentially controlling, by the controller, the power generation amounts of each of the fuel cells depending on the corrected power generation control values;
wherein, in the correcting the power generation control values of each of the fuel cells depending on the differences between the output voltages of each of the fuel cells, the controller determines differences between deterioration degrees of each of the fuel cells through comparison between the output voltages of each of the fuel cells, and corrects the power generation control values of each of the fuel cells depending on the differences between the deterioration degrees of each of the fuel cells.