Abstract: A fuel cell unit includes: a fuel cell module; and a power converter. The fuel cell module includes a first fuel cell module including a first fuel cell stack that is a stack of first single cells, and a second fuel cell module including a second fuel cell stack that is a stack of second single cells. The power converter includes a first power converter, and a second power converter. The first power converter is located on a first surface of the first fuel cell module. The second power converter is located on a first surface of the second fuel cell module. The first surfaces face each other. A first normal direction to the first surfaces is orthogonal to a stacking direction of the first single cells and the second single cells.

Abstract: Provided is a flow passage structure that is employed in a fuel cell system and includes a hydrogen gas pipe, a hydrogen off-gas pipe, a supply pipe, a lead-out pipe, and a plurality of junctions. The lead-out pipe includes a first wall located between an inner wall and a central axis of the supply pipe, a second wall connected to the first wall and located between the first wall and the central axis, and a first region surrounded by the first wall and the second wall, and is configured such that a second region between the inner wall and the first wall and a third region on the side of the central axis from the second wall communicate with each other. At the junctions, the first region and a leading end part of the hydrogen gas pipe communicate with and connect to each other.

Abstract: A fuel cell vehicle includes a fuel cell stack including a stack case as a housing in which a plurality of fuel cells is accommodated and a plate-shaped end plate configured to close an opening of the stack case. The end plate has an overhanging portion configured to overhang from a part, of the stack case, in which the fuel cells are accommodated. The fuel cell stack is placed in a front room or a rear room. The height position of at least part of the overhanging portion is the same as the height position of a frame of the fuel cell vehicle.

Abstract: Provided is a flow passage structure that is employed in a fuel cell system and includes a hydrogen gas pipe, a hydrogen off-gas pipe, a supply pipe, a lead-out pipe, and a plurality of junctions. The lead-out pipe includes a first wall located between an inner wall and a central axis of the supply pipe, a second wall connected to the first wall and located between the first wall and the central axis, and a first region surrounded by the first wall and the second wall, and is configured such that a second region between the inner wall and the first wall and a third region on the side of the central axis from the second wall communicate with each other. At the junctions, the first region and a leading end part of the hydrogen gas pipe communicate with and connect to each other.

Abstract: A support frame includes a first member, a second member, and a third member each having a surface. The first member is connected to the second member by fitting, and the first member is connected to the third member by fitting. In each of connecting portions, one of members connected to each other is defined as a first connecting member and the other one of the members is defined as a second connecting member. A side end portion of the first connecting member on a side facing the second connecting member is provided with an extending portion. The extending portion has a flat shape, and the extending portion is provided with a fitted portion constituted by a recessed portion. A side end portion of the second connecting member on a side facing the first connecting member is provided with a fitting portion configured to fit in the fitted portion.

Abstract: A vehicle includes: a front room disposed at a front portion of the vehicle in the vehicle in a vehicle-longitudinal direction; a fuel cell stack disposed in the front room, the fuel cell stack including multiple cells stacked in the vehicle-longitudinal direction; and a buffer member disposed in front of the fuel cell stack in the vehicle-longitudinal direction.

Abstract: A fuel cell vehicle capable of reducing an impact on a fuel cell stack thereof in the vehicle-width direction is provided. The fuel cell vehicle includes: the fuel cell stack; a stack frame to which the fuel cell stack is adapted to be mounted, and disposed in a front compartment of the vehicle; and a pair of front side members disposed on both the right and left sides of the stack frame and disposed to extend in the vehicle front-rear direction. The fuel cell stack is disposed so as to be fitted within the width in the vehicle-width direction of the stack frame in the vehicle-width direction. The stack frame entirely overlaps the front side members when viewed in the vehicle-width direction.

Abstract: A support frame includes a first member, a second member, and a third member each having a surface. The first member is connected to the second member by fitting, and the first member is connected to the third member by fitting. In each of connecting portions, one of members connected to each other is defined as a first connecting member and the other one of the members is defined as a second connecting member. A side end portion of the first connecting member on a side facing the second connecting member is provided with an extending portion. The extending portion has a flat shape, and the extending portion is provided with a fitted portion constituted by a recessed portion. A side end portion of the second connecting member on a side facing the first connecting member is provided with a fitting portion configured to fit in the fitted portion.

Abstract: A vehicle includes: a front room disposed at a front part of the vehicle in a longitudinal direction of the vehicle; a fuel cell stack disposed in the front room, the fuel cell stack including multiple cells stacked in the longitudinal direction; a bumper reinforcement disposed at a front part of the front room in the longitudinal direction; and a buffer member disposed between the fuel cell stack and the bumper reinforcement in the longitudinal direction. At least a part of the buffer member overlaps with the bumper reinforcement, as viewed from a direction along the longitudinal direction.

Abstract: A fuel cell vehicle capable of reducing an impact on a fuel cell stack thereof in the vehicle-width direction is provided. The fuel cell vehicle includes: the fuel cell stack; a stack frame to which the fuel cell stack is adapted to be mounted, and disposed in a front compartment of the vehicle; and a pair of front side members disposed on both the right and left sides of the stack frame and disposed to extend in the vehicle front-rear direction. The fuel cell stack is disposed so as to be fitted within the width in the vehicle-width direction of the stack frame in the vehicle-width direction. The stack frame entirely overlaps the front side members when viewed in the vehicle-width direction.

Abstract: A vehicle includes: a front room disposed at a front portion of the vehicle in the vehicle in a vehicle-longitudinal direction; a fuel cell stack disposed in the front room, the fuel cell stack including multiple cells stacked in the vehicle-longitudinal direction; and a buffer member disposed in front of the fuel cell stack in the vehicle-longitudinal direction.

Abstract: A vehicle includes: a front room disposed at a front part of the vehicle in a longitudinal direction of the vehicle; a fuel cell stack disposed in the front room, the fuel cell stack including multiple cells stacked in the longitudinal direction; a bumper reinforcement disposed at a front part of the front room in the longitudinal direction; and a buffer member disposed between the fuel cell stack and the bumper reinforcement in the longitudinal direction. At least a part of the buffer member overlaps with the bumper reinforcement, as viewed from a direction along the longitudinal direction.