US 12,305,302 B2
Water electrolysis system
Takumi Kawano, Wako (JP); Yuta Hoshi, Wako (JP); and Shoji Takasugi, Wako (JP)
Assigned to Honda Motor Co., Ltd., Tokyo (JP)
Filed by HONDA MOTOR CO., LTD., Tokyo (JP)
Filed on Dec. 6, 2023, as Appl. No. 18/530,433.
Claims priority of application No. 2022-196891 (JP), filed on Dec. 9, 2022.
Prior Publication US 2024/0191377 A1, Jun. 13, 2024
Int. Cl. C25B 15/029 (2021.01); C25B 1/04 (2021.01); C25B 9/23 (2021.01); C25B 9/65 (2021.01); C25B 9/77 (2021.01); C25B 15/023 (2021.01); C25B 15/08 (2006.01)
CPC C25B 15/029 (2021.01) [C25B 1/04 (2013.01); C25B 9/23 (2021.01); C25B 9/65 (2021.01); C25B 9/77 (2021.01); C25B 15/023 (2021.01); C25B 15/085 (2021.01)] 8 Claims
OG exemplary drawing
 
1. A water electrolysis system comprising:
a water electrolysis stack including an electrolyte membrane, and an anode and a cathode that sandwich the electrolyte membrane;
a power supply device configured to pass a current between the anode and the cathode;
a pressure control valve configured to narrow a passage of a discharge pipe through which oxygen-containing gas flows, the oxygen-containing gas being discharged from the water electrolysis stack and containing oxygen gas generated by water electrolysis in the water electrolysis stack;
a concentration sensor provided in the discharge pipe at a location downstream of the pressure control valve, and configured to detect a hydrogen concentration in the oxygen-containing gas; and
a control device configured to control the power supply device,
wherein the control device comprises one or more processors that execute computer-executable instructions stored in a memory, and the one or more processors execute the computer-executable instructions to cause the control device to adjust the current passed between the anode and the cathode based on the hydrogen concentration.