Abstract: A fuel cell system including an exhaust merging unit at which a cathode exhaust fluid containing water discharged from a cathode of a fuel cell stack merges with an anode exhaust fluid containing water discharged from an anode of the fuel cell stack, wherein the exhaust merging unit includes a cathode exhaust outlet for discharging the cathode exhaust fluid, an anode exhaust outlet for discharging the anode exhaust fluid, and a partition separating the cathode exhaust outlet and the anode exhaust outlet on an upstream side of a merging section at which the cathode exhaust outlet and the anode exhaust outlet merge.

Abstract: The present invention has an object of efficiently improving a shock resistance property between a fuel cell and electrical device. A fuel cell system includes a stack assembly, an anode system, a cathode system, an electrical device, a frame, and two connectors. The stack assembly includes a stack in which fuel cells are laminated. The electrical device is installed below the stack assembly. The frame is installed below the electrical device, and both ends in a front/rear direction extend upwards. The two connectors connect both ends of the frame to the stack assembly. In a side view, the stack assembly is surrounded from at least three sides by the two connectors and the frame. In a side view, at least a predetermined portion of the electrical device is surrounded from the four sides by the frame and the stack assembly.

Abstract: The present invention has an object of improving shock resistance of a fuel cell. A fuel cell system includes a stack, an anode system, a cathode system and a cooling system. Fuel cells are laminated in the stack. The anode system includes an anode system pipe which supplies fuel gas to the stack. The cathode system includes a cathode system pipe which supplies oxidant gas to the stack. The cooling system includes a cooling system pipe which feeds coolant for cooling a cooling target including at least any one among the stack, anode system and cathode system. The stack is surrounded by the cooling system pipe. A portion of the cooling system pipe surrounding the stack is surrounded by the cathode system pipe.

Abstract: The present invention has an object of suppressing pressure loss of oxidant gas in a cathode system, and improving heat exchange performance of heat exchangers, in a fuel cell system. The fuel cell system includes a stack, anode system, cathode system and cooling system. Fuel cells are laminated in the stack. The anode system supplies fuel gas to the stack. The cathode system supplies oxidant gas to the stack. The cooling system includes a plurality of heat exchangers which exchange heat between the oxidant gas and coolant. Each of the heat exchangers is a separate member from another heat exchanger, independent from another heat exchanger. The plurality of heat exchangers are arranged in parallel in the cathode system. The cathode system allows oxidant gas to pass through the plurality of heat exchangers in parallel.

Abstract: The present invention has an object of improving manufacturability of a fuel cell system. A fuel cell system includes a stack, anode system and cathode system. The cathode system includes a pump which pressure feeds oxidant gas to the stack, and a pump drive device which is electrically connected via a power wire to the pump, and supplies drive voltage to the pump. In a bottom view, the pump and the pump drive device are arranged side by side in a system axis direction, which is a longitudinal direction of the fuel cell system. In a bottom view, the pump axis direction slopes relative to the system axis direction and drive device axis direction.

Abstract: The present invention has an object of functionally and efficiently laying out a cooling system in a fuel cell system. A fuel cell system includes a stack, an anode system, a cathode system, a first cooling system and a second cooling system. The first cooling system includes a first heat exchanger, and circulates coolant between a predetermined first radiator and the first heat exchanger. The second cooling system includes a plurality of second heat exchangers, and circulates coolant between a second radiator and each of the second heat exchangers. The plurality of second heat exchangers are collectively arranged so that, for each of the second heat exchangers, a heat exchanger other than itself closest to itself among all of the heat exchangers including the first heat exchanger and the plurality of second heat exchangers is a second heat exchanger other than itself.

Abstract: The present invention has an object of, without harming the manufacturability of a fuel cell system, and without increasing pressure loss of oxidant gas, enabling to layout heat exchangers of a cathode system in parallel. The fuel cell system includes a stack, anode system, cathode system and cooling system. The cathode system supplies oxidant gas to the stack in which fuel cells are laminated. The cooling system includes a plurality of heat exchangers which exchange heat between the oxidant gas and coolant. The plurality of heat exchangers is arranged in parallel in the cathode system. The cathode system includes a branching part which is more to an upstream side than each of the heat exchangers, and includes a merging part which is more to a downstream side than each of them. The heat exchangers are installed to be shifted from each other in each direction among up/down, front/rear and left/right.

Abstract: The present invention improves mountability of a fuel cell system. A fuel cell system includes a stack in which fuel cells are laminated, an anode system that supplies fuel gas to the stack, a cathode system that supplies oxidant gas to the stack, and a cooling system that cools a cooling target by way of a coolant. The anode system includes an anode system intake port. The cathode system includes a cathode system intake port and cathode system exhaust port. The cooling system includes a cooling system inflow port and cooling system outflow port. The respective ports among the anode system intake port, cathode system intake port, cathode system exhaust port, cooling system inflow port and cooling system outflow port are all provided to a system side face serving as an end in a horizontal direction side of the fuel cell system.

Abstract: A fuel cell system includes, in an auxiliary device case, a first layer, a second layer and a third layer in order from the end plate side, a coolant discharge pipe arranged in the first layer, cathode-side discharge pipes respectively connected to a plurality of oxygen-containing gas lead-out through holes which interpose the coolant discharge pipe, a plurality of first penetrating portions penetrating the first layer in the thickness direction, and a first connecting part provided in the second layer, extending in the layer direction of the second layer so as to straddle the coolant discharge pipe on the outer side, and connecting the plurality of first penetrating portions.

Abstract: A fuel cell vehicle includes a fuel cell stack, a hydrogen gas supply pipe for supplying a hydrogen gas to the fuel cell stack, and injectors provided at positions along the hydrogen gas supply pipe, for injecting the hydrogen gas to the fuel cell stack. The hydrogen gas supply pipe includes a buffer, provided on the upstream side of the injectors, and the hydrogen gas can flow through the buffer. The buffer includes a branch pipe branched from the hydrogen gas supply pipe, and the buffer tank coupled to the branch pipe so as to allow the hydrogen gas to flow through the buffer tank.

Abstract: A fuel cell vehicle includes a fuel cell stack, a stack case containing the fuel cell stack, and an interruption control unit for electrically interrupting an output line of the fuel cell stack at the time of vehicle collision. The interruption control unit is arranged on an upper surface of the stack case, and a front end of the interruption control unit is positioned on the vehicle rear side as compared with a front end of the stack case.

Abstract: A stack case of a fuel cell system includes a case body, a first end cover, and a second end cover. A recess is formed in an upper surface of the case body. An interruption control unit as an electrical equipment unit is placed in the recess. A plurality of first screw holes are formed in one end surface of the case body, and a plurality of second screw holes are formed in the other end surface of the case body. A first screw hole aligned with a recess in a direction in which a plurality of power generation cells are stacked together penetrates through the case body from one end surface of the case body to a side surface of the recess.

Abstract: A reactant gas channel part provided outside an auxiliary machinery case of a fuel cell system is connected to a case through hole. A plurality of channel seal members are provided between the auxiliary machinery case and the reactant gas channel part, where the channel seal members are arranged side by side in the radial direction of the case through hole and surround the case through hole. The reactant gas channel part has an opposing surface that faces a surrounding portion of the auxiliary machinery case that surrounds the case through hole. The channel seal members include an inner seal member abutting on the opposing surface and an outer seal member disposed radially outside of it. A connection channel communicating with an internal space of the auxiliary machinery case is formed between the inner seal member and the outer seal member.

Abstract: A gas liquid separator of a fuel cell system includes a first channel forming section forming a first channel for allowing an oxygen-containing exhaust gas to flow in a horizontal direction, and a second channel forming section forming a second channel connected to the first channel. The first channel forming section is provided with an inlet for guiding the oxygen-containing exhaust gas into the first channel. The second channel forming section is provided with an outlet for discharging the oxygen-containing exhaust gas flowing through the second channel. The second channel includes a bent channel for guiding upward the oxygen-containing exhaust gas guided from the first channel.

Abstract: A fuel cell module includes a case body containing a cell stack body formed by stacking a plurality of power generation cells. The case body includes a plurality of connectors for mounting the fuel cell module into a fuel cell vehicle. The plurality of connectors include a first connector group used for mounting the fuel cell module into a first fuel cell vehicle in a manner that a stacking direction of the fuel cell module is substantially aligned with a first direction, and a second connector group used for mounting the fuel cell module into a second fuel cell vehicle in a manner that the stacking direction of the fuel cell module is substantially aligned with a second direction. Some connectors are common to both the first connector group and the second connector group.

Abstract: A fuel cell system includes an inlet pipe configured to guide a fuel gas injected from an injector to a fuel cell stack, and a gas liquid separator configured to perform gas liquid separation of a fuel exhaust gas discharged from the fuel cell stack. The gas liquid separator is directly coupled to a lower portion of the inlet pipe. A connection channel configured to connect the inside of the gas liquid separator and a channel in the inlet pipe together is formed in a part coupling the gas liquid separator and the inlet pipe together.

Abstract: A fuel cell system includes a fuel cell stack, a stack case storing the fuel cell stack, and an auxiliary device case joined to the stack case, and storing fuel cell auxiliary devices. The auxiliary device case includes an end plate part which applies a tightening load in a stacking direction to the fuel cell stack, as an integral part of the auxiliary device case.

Abstract: A fuel cell system includes a stack case storing a fuel cell stack, and an auxiliary device case containing a fuel gas system device and an oxygen-containing gas system device. The auxiliary device case covers the fuel gas system device in a manner to protect the fuel gas system device against the external load, and includes a first case member provided with a mount fixed to a vehicle body frame, and a second case member made of material having specific gravity smaller than that of the first case member, and covers at least the oxygen-containing gas system device.

Abstract: A fuel cell system includes, in an auxiliary device case, a first layer, a second layer and a third layer in order from the end plate side, a coolant discharge pipe arranged in the first layer, cathode-side discharge pipes respectively connected to a plurality of oxygen-containing gas lead-out through holes which interpose the coolant discharge pipe, a plurality of first penetrating portions penetrating the first layer in the thickness direction, and a first connecting part provided in the second layer, extending in the layer direction of the second layer so as to straddle the coolant discharge pipe on the outer side, and connecting the plurality of first penetrating portions.

Abstract: A fuel cell system including an exhaust merging unit at which a cathode exhaust fluid containing water discharged from a cathode of a fuel cell stack merges with an anode exhaust fluid containing water discharged from an anode of the fuel cell stack, wherein the exhaust merging unit includes a cathode exhaust outlet for discharging the cathode exhaust fluid, an anode exhaust outlet for discharging the anode exhaust fluid, and a partition separating the cathode exhaust outlet and the anode exhaust outlet on an upstream side of a merging section at which the cathode exhaust outlet and the anode exhaust outlet merge.