US 11,757,114 B2
Fuel cell system and method of controlling the system
Kazuhide Inoue, Wako (JP); Takuto Nakagawa, Wako (JP); Manabu Iwaida, Wako (JP); Kiyohide Hibino, Wako (JP); Atsushi Kamachi, Wako (JP); and Akane Goto, Wako (JP)
Assigned to Honda Motor Co., Ltd., Tokyo (JP)
Filed by HONDA MOTOR CO., LTD., Tokyo (JP)
Filed on Feb. 27, 2022, as Appl. No. 17/681,803.
Claims priority of application No. 2021-043630 (JP), filed on Mar. 17, 2021.
Prior Publication US 2022/0302476 A1, Sep. 22, 2022
Int. Cl. H01M 8/0444 (2016.01); H01M 8/04082 (2016.01); H01M 8/04791 (2016.01); H01M 8/04223 (2016.01); H01M 8/0438 (2016.01); H01M 8/04119 (2016.01); H01M 8/04746 (2016.01)
CPC H01M 8/0447 (2013.01) [H01M 8/04201 (2013.01); H01M 8/04805 (2013.01); H01M 8/0441 (2013.01); H01M 8/04156 (2013.01); H01M 8/04179 (2013.01); H01M 8/04231 (2013.01); H01M 8/04388 (2013.01); H01M 8/04395 (2013.01); H01M 8/04447 (2013.01); H01M 8/04455 (2013.01); H01M 8/04761 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A method of controlling a fuel cell system comprising a fuel cell configured to generate power by using an oxygen-containing gas discharged from an air pump and supplied to a cathode through an inlet of a cathode flow field and a fuel gas supplied to an anode through an inlet of an anode flow field, the method comprising:
introducing a fuel exhaust gas discharged from an outlet of the anode flow field of the fuel cell into the inlet of the cathode flow field through a communication flow path;
estimating an amount of fuel gas discharged from an outlet of the cathode flow field, of the fuel exhaust gas that is introduced from the communication flow path to the inlet of the cathode flow field and then flows through the cathode;
calculating an amount of oxygen-containing gas necessary for dilution at a time of discharge into atmosphere, from an estimated amount of fuel gas; and
setting a discharge amount of the air pump, based on a calculated amount of oxygen-containing gas.