Abstract: A fuel cell system includes a fuel cell stack, hydrogen gas system auxiliary devices disposed outside the fuel cell stack, and air system auxiliary devices disposed adjacent to the hydrogen gas system auxiliary devices. The hydrogen gas system auxiliary devices include injectors, upstream side auxiliary devices provided on the upstream side of the injectors in the flow direction of hydrogen gas, and downstream side auxiliary devices provided on the downstream side of the injectors in the flow direction of the hydrogen gas. The upstream side auxiliary devices are disposed at positions farther away from the air system auxiliary devices than the downstream side auxiliary devices.

Abstract: A gas liquid separator of a fuel cell system includes a first gas liquid separation chamber capable of storing water content separated from an oxygen-containing exhaust gas, a second gas liquid separation chamber positioned above the first gas liquid separation chamber, and connected to the first gas liquid separation chamber, an inlet, an outlet, and a gas inlet channel for guiding a dry gas into the first gas liquid separation chamber. A gas inlet section forming the gas inlet channel includes an inner protrusion protruding into an upper space of the first gas liquid separation chamber, and a bottom surface of the first gas liquid separation chamber is inclined downward in a direction in which the inner protrusion extends.

Abstract: Mount structure of a fuel cell stack holds the fuel cell stack in a motor room of a vehicle by side mounts and a rear mount. The fuel cell stack includes a plurality of power generation cells and a stack case. A window frame having a rear window is provided in a rear surface of the stack case. A device of the fuel cell system can be inserted into the rear window. The rear mount includes a rear mount bracket attached to a window frame. The rear mount bracket is positioned is below a vehicle body frame and a rear window.

Abstract: A fuel cell module is mounted in a fuel cell vehicle. In the fuel cell module, an auxiliary device case is provided on a side part of the fuel cell stack. A hydrogen system auxiliary device for supplying and circulating a hydrogen gas and an oxidizing agent system auxiliary device for supplying and discharging an oxygen-containing gas are placed in the auxiliary device case. A humidifier of the oxidizing agent system auxiliary device includes a fuel gas system protection mechanism. When a load is applied from the front side of the fuel cell vehicle, the fuel gas system protection mechanism prevents interference of the humidifier with the hydrogen system auxiliary device and prevents breakage of the hydrogen system auxiliary device.

Abstract: An air cleaner is provided in a cathode system device of a fuel cell system that is mounted in a fuel cell vehicle. The air cleaner comprises a casing having an internal space through which air flows, and an air filter accommodated in the internal space. The air filter has a flat plate shape, and is arranged on an outer side of a fuel cell stack in a horizontal direction, and in a state of being inclined with respect to the horizontal direction.

Abstract: A fuel cell stack includes a plurality of power generation cells and an end plate. A plurality of fluid passages for allowing a fuel gas, an oxygen-containing gas, and a coolant to flow independently in a stacking direction are provided in the plurality of power generation cells. The end plate includes: holes which penetrate through the end plate in a thickness direction and are connected to the fluid passages, and to which manifolds are connected; and flow channels formed in the end plate, and connected to the fluid passages. The flow channels include first and second lateral openings opened to a surface which is different from a surface where the holes are opened.

Abstract: A fuel cell system of a fuel cell vehicle includes an injector device disposed side by side with a fuel cell stack in a stacking direction of a plurality of power generation cells, and a heat exchanger. The injector device includes an injector body, and a support part. The support part has a fuel gas inlet channel, and supports the injector body. The heat exchanger is fixed to the support part.

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 valve is disposed in a reactant gas system apparatus of a fuel cell system. The valve includes a housing having an internal channel as a passage of water, and heaters in the form of rods inserted into the housing. An orifice having a small channel cross sectional area is provided at a predetermined position of the channel. The heaters are inclined from a solenoid of the valve in an axial direction of the housing, and front ends of the heaters are positioned close to the orifice.

Abstract: An electric apparatus (air pump), which operates by receiving a power supply from a drive control apparatus (PDU) mounted in a fuel cell vehicle, includes a first connection terminal section configured to directly connect to the drive control apparatus, and a second connection terminal section configured to connect to the drive control apparatus via a cable.

Abstract: A gas liquid separator of a fuel cell system includes a first gas liquid separation chamber capable of storing water content separated from an oxygen-containing exhaust gas, a second gas liquid separation chamber positioned above the first gas liquid separation chamber, and connected to the first gas liquid separation chamber, an inlet, an outlet, and a gas inlet channel for guiding a dry gas into the first gas liquid separation chamber. A gas inlet section forming the gas inlet channel includes an inner protrusion protruding into an upper space of the first gas liquid separation chamber, and a bottom surface of the first gas liquid separation chamber is inclined downward in a direction in which the inner protrusion extends.

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 system includes a fuel cell stack, hydrogen gas system auxiliary devices disposed outside the fuel cell stack, and air system auxiliary devices disposed adjacent to the hydrogen gas system auxiliary devices. The hydrogen gas system auxiliary devices include injectors, upstream side auxiliary devices provided on the upstream side of the injectors in the flow direction of hydrogen gas, and downstream side auxiliary devices provided on the downstream side of the injectors in the flow direction of the hydrogen gas. The upstream side auxiliary devices are disposed at positions farther away from the air system auxiliary devices than the downstream side auxiliary devices.

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 system includes a fuel cell stack and a cathode gas system apparatus. The cathode gas system apparatus includes a humidifier, a discharge side gas liquid separator provided on the downstream side of a flow direction of a cathode off gas in the humidifier, and an expander provided on the downstream side of the flow direction of the cathode off gas in a discharge side gas liquid separator. In the order toward the lower side in the gravity direction, the humidifier, the discharge side gas liquid separator, and the expander are disposed in the fuel cell system.

Abstract: A mount structure for a fuel cell stack includes a first bracket member supporting and fixing the fuel cell stack to a first installation member, and a second bracket member supporting and fixing the fuel cell stack to a second installation member. A part of the second bracket includes a constricted portion having low strength in comparison with other portions of the second bracket member.

Abstract: A fuel cell vehicle is equipped with a fuel cell system including a stack case, an auxiliary device case, and a fuel gas pipe. The stack case contains a cell stack body of power generation cells. The auxiliary device case is provided adjacent to one end of the stack case, and contains a fuel cell auxiliary device. The fuel gas pipe is connected to the auxiliary device case, and a fuel gas is supplied into the fuel cell auxiliary device through the fuel gas pipe. The fuel cell system includes a cutout formed by cutting out part of the auxiliary device case, and the fuel gas pipe is disposed in the fuel cell system so as to pass nearby the cutout.

Abstract: In a fuel cell system, a voltage controller provided on a lateral side of a fuel cell stack and a contactor provided above the fuel cell stack are electrically connected together by bus bars in the form of flat plates. The bus bars are each provided with a displacement absorption structure which enables the voltage controller and the contactor to be displaced closer to each other in a direction in which the fuel cell stack and the voltage controller are arranged.

Abstract: An air cleaner is provided in a cathode system device of a fuel cell system that is mounted in a fuel cell vehicle. The air cleaner comprises a casing having an internal space through which air flows, and an air filter accommodated in the internal space. The air filter has a flat plate shape, and is arranged on an outer side of a fuel cell stack in a horizontal direction, and in a state of being inclined with respect to the horizontal direction.

Abstract: A fuel cell system includes a fuel cell stack, and further includes, as piping structure, a supply pipe for supplying a cathode gas and a discharge pipe for discharging a cathode off gas. Further, the fuel cell system includes an expander, and a discharge side gas liquid separator disposed above the expander and configured to separate water from the cathode off gas. A water discharge pipe of the discharge side gas liquid separator is connected to a connector, of a discharge pipe, that is positioned on the downstream side of the expander, and the water discharge pipe extends downward obliquely toward the connector.