Abstract: In a fuel cell, a cathode passage extends from an oxidizing gas supply hole to an oxidizing gas discharge hole. A turn interval at which a flow direction of an oxidizing gas returns to an original direction in an upstream-side passage region is different from the turn interval in a downstream-side passage region. A ratio between the turn interval in the upstream-side passage region and the turn interval in the downstream-side passage region is set to 1.1:1 to 3:1. The upstream-side passage region is overlapped with a most downstream-side passage portion of an anode passage with a membrane electrode assembly interposed between the upstream-side passage region and the most downstream-side passage portion.

Abstract: A fuel cell separator 10 includes a power generation section 10B provided in a central region on a surface of the separator formed into a plate, a plurality of manifolds 11A, 11B, 12A, and 12B provided in a region closer to the outer periphery than the power generation section 10B, and a reinforcing portion 14A provided so as to extend from a manifold beam portion 15 formed between the plurality of manifolds 11A, 11B, 12A, and 12B to a gap region 13 formed between the power generation section 10B and the manifolds 11A, 11B, 12A, and 12B.

Abstract: A fuel cell stack 11 includes a cell laminate 21 composed of a plurality of stacked cells 20, and air is introduced from an anode end part 21a of the cell laminate 21. The cell laminate 21 has two end cells 24 installed adjacently to a cathode end part 21b side, thereby providing the cathode end part 21b with high thermal insulation properties.

Abstract: The invention relates to fuel cell unit arranged in an underfloor space of a fuel cell vehicle. The fuel cell unit includes a fuel cell that has a plurality of cells stacked together; and a cell monitor that is arranged in a side region of the fuel cell, and that monitors a state of each of the cells.

Abstract: An anode separator of a fuel cell forms: a plurality of gas flow channels arranged in parallel to let a fuel gas flow to an MEA; a supply passage configured to supply the plurality of gas flow channels with the fuel gas; and a recovery passage configured to recover the fuel gas from the plurality of gas flow channels. The plurality of gas flow channels include: a gas flow channel connects the supply passage and the recovery passage; and a gas flow channel having the supply passage side blocked.

Abstract: A fuel cell module which is capable of easily securing an adequate sealing function even when the unit cell is made thinner. The fuel cell module includes a stacked body which includes: a stacked structure including: an electrolyte layer, and a pair of electrodes provided to sandwich the electrolyte layer; and a pair of separators disposed to sandwich the stacked structure, the separators being arranged at least one end of the stacked body in the stacking direction, the separators which are arranged at the end of the stacked body having a groove which is capable of receiving a sealing member in a face which does not oppose to the stacked structure, and the at least one groove being a deep groove of which depth is larger than the thickness of the separator having the groove.

Abstract: A connector includes a housing for holding connector terminals and a side fitting slot located at a side of the housing. The side fitting slot is defined by an arm provided on the housing and receives a mating part to which the connector terminals are connected when the mating part is inserted in the side fitting slot.

Abstract: An anode separator of a fuel cell forms: a plurality of gas flow channels arranged in parallel to let a fuel gas flow to an MEA; a supply passage configured to supply the plurality of gas flow channels with the fuel gas; and a recovery passage configured to recover the fuel gas from the plurality of gas flow channels. The plurality of gas flow channels include: a gas flow channel connects the supply passage and the recovery passage; and a gas flow channel having the supply passage side blocked.

Abstract: A number and a combination of N-pole connectors and (N+1)-pole connectors are determined such that a number of fuel cells included in the fuel cell stack and a number of all of poles included in the plurality of terminal-side connectors are equal to each other. Further, when the number of fuel cells of the fuel cell stack changes, the change can be addressed by changing the number and the combination of the N-pole connectors and the (N+1)-pole connectors without newly providing a terminal-side connector other than the N-pole connector and the (N+1)-pole connector.

Abstract: A connecter comprises a housing having a first projection formed on an upper half of a first lateral surface over the entire width thereof between the front surface and the rear surface, and a second projection formed on a lower half of a second lateral surface opposed to the first lateral surface; a single detection terminal mounted inside the first projection, capable of connection to an electrode of a single cell contained in a fuel cell; and a detection terminal mounted in the lower half of the housing, capable of connection to the electrode of the single cell contained in the fuel cell. The detection terminals are all arranged at equal intervals.

Abstract: A number and a combination of N-pole connectors and (N+1)-pole connectors are determined such that a number of fuel cells included in the fuel cell stack and a number of all of poles included in the plurality of terminal-side connectors are equal to each other. Further, when the number of fuel cells of the fuel cell stack changes, the change can be addressed by changing the number and the combination of the N-pole connectors and the (N+1)-pole connectors without newly providing a terminal-side connector other than the N-pole connector and the (N+1)-pole connector.

Abstract: A connecter comprises a housing having a first lateral surface having a convex fitting portion and a second lateral surface opposed to the first lateral surface and having a convex fitting portion, and a plurality of detection terminals accommodated in the housing, each capable of connection to the electrode provided to the single cell stacking body, wherein the fitting portion formed on the first lateral surface is positioned corresponding to a recess between the fitting portions formed on the second lateral surface, and the fitting portion formed on the second lateral surface is positioned corresponding to a recess between the fitting portions formed on the first lateral surface.

Abstract: A connecter comprises a housing having a first projection formed on an upper half of a first lateral surface over the entire width thereof between the front surface and the rear surface, and a second projection formed on a lower half of a second lateral surface opposed to the first lateral surface; a single detection terminal mounted inside the first projection, capable of connection to an electrode of a single cell contained in a fuel cell; and a detection terminal mounted in the lower half of the housing, capable of connection to the electrode of the single cell contained in the fuel cell. The detection terminals are all arranged at equal intervals.

Abstract: A connecter comprises a housing having a first lateral surface having a convex fitting portion and a second lateral surface opposed to the first lateral surface and having a convex fitting portion, and a plurality of detection terminals accommodated in the housing, each capable of connection to the electrode provided to the single cell stacking body, wherein the fitting portion formed on the first lateral surface is positioned corresponding to a recess between the fitting portions formed on the second lateral surface, and the fitting portion formed on the second lateral surface is positioned corresponding to a recess between the fitting portions formed on the first lateral surface.