US 12,438,178 B2
Fuel cell system
Hideharu Naito, Wako (JP); and Takashi Takura, Wako (JP)
Assigned to Honda Motor Co., Ltd., Tokyo (JP)
Filed by HONDA MOTOR CO., LTD., Tokyo (JP)
Filed on Feb. 17, 2022, as Appl. No. 17/674,011.
Claims priority of application No. 2021-024782 (JP), filed on Feb. 19, 2021.
Prior Publication US 2022/0271321 A1, Aug. 25, 2022
Int. Cl. H01M 8/2484 (2016.01); H01M 8/2483 (2016.01)
CPC H01M 8/2484 (2016.02) [H01M 8/2483 (2016.02); H01M 2250/20 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A fuel cell system mounted on a vehicle, the fuel cell system comprising a fuel cell stack and a stack case configured to house the fuel cell stack, wherein:
the stack case includes a front end surface facing forward in a traveling direction of the vehicle;
an inflow hole structure through which air entering the stack case passes is formed in a lower portion of the front end surface;
an outflow hole structure through which air flowing out of the stack case passes is formed in an upper portion of the front end surface;
an opening area of the outflow hole structure is larger than an opening area of the inflow hole structure;
a track-shaped recess is formed in the front end surface of the stack case, at least one of the inflow hole structure or the outflow hole structure is included in the track-shaped recess, a filter member and a pressing member that presses and holds the filter member being accommodated in the track-shaped recess;
the stack case further includes a cover member that covers the inflow hole structure or the outflow hole structure, a ventilation communication hole that communicates the inflow hole structure or the outflow hole structure with atmosphere being formed in the cover member; and
the ventilation communication hole extends along a vehicle width direction at a position higher than the inflow hole structure or the outflow hole structure in a vehicle height direction.