A fuel cell unit includes a fuel cell stack, a reactor, and a case housing the fuel cell stack and the reactor. The case is provided with an intermediate plate that partitions a space inside the case into an upper space and a lower space. The fuel cell stack is housed in the lower space, with a predetermined clearance provided between the intermediate plate and the fuel cell stack. The reactor is housed in the upper space above the fuel cell stack, with an upper portion of the reactor fixed to the case. A through-hole that is provided in the intermediate plate at a position below the reactor. The lower portion of the reactor faces the through-hole.

A fuel cell system for a vehicle for preventing intrusion of water in a relief valve without providing a casing or a waterproof sheet for the relief valve is provided. The fuel cell system comprises a fuel cell stack placed in a front room of a vehicle, a power control unit to perform output control of the fuel cell stack, a hydrogen supply path for supplying hydrogen gas to the fuel cell stack, and the relief valve provided in half way of the hydrogen supply path. The relief valve is placed above the fuel cell stack in the front room and includes an exhaust port. The exhaust port is placed facing an upper surface of a casing of the power control unit with a clearance such that the hydrogen gas is ejected downward through the exhaust port in the direction of gravity.

A fuel cell vehicle mounted with a fuel gas tank in an underfloor of the vehicle. The fuel cell vehicle includes: a floor that has a projecting portion projecting upward in a height direction of the vehicle and extending along a front and rear direction of the vehicle; a fuel gas tank arranged under the projecting portion in the height direction of the vehicle and fixed to the floor; and an undercover arranged under the fuel gas tank in the height direction of the vehicle. The undercover has a fixation protruded portion that projects upward in the height direction of the vehicle in a side of the fuel gas tank in a width direction of the vehicle, and being fixed to the floor by the fixation protruded portion.

A high-voltage unit casing 10 for on-vehicle use to house therein a plurality of devices includes: a first side face 20; a second side face 21 opposed to the first side face; and a connecting portion 22 for structurally connecting the first side face and the second side face to each other. The connecting portion includes a partitioning portion 50 which is fixed to the first side face at a fixing portion and which extends from the fixing portion toward the second side face, the partitioning portion being located at a position separate from an upper surface and a lower surface of the high-voltage unit casing in an inner surface of the first side face. Spaces for placing at least one device included in the plurality of devices are formed on both upper and lower sides, respectively, of the partitioning portion.

An aircraft propulsion module comprises a hydrogen storage system, an electrochemical converter (7) connected to the hydrogen storage system, wherein the at least one electrochemical converter is adapted to convert hydrogen supplied from the hydrogen storage system (12) into electric energy, and an electric motor (5) electrically connected to the electrochemical converter, wherein the electric motor is adapted to generate thrust; wherein the propulsion module comprises at least one separation means (9) adapted to separate at least one component of the propulsion module from the propulsion module. An aircraft comprises at least one such aircraft propulsion module. A method for operating a propulsion module comprises that: during operation of the propulsion module, at least one separation means is actuated, by which actuation at least one component of the propulsion module is separated from the remaining propulsion module and then falls from the remaining propulsion module.

An aircraft propulsion module comprising a hydrogen storage system (9), at least one electrochemical converter (7) connected to the hydrogen storage system, wherein the at least one electrochemical converter is adapted to convert hydrogen supplied from the hydrogen storage system into electric energy, and at least one electric motor (5) electrically connected to the at least one electrochemical converter, wherein the electric motor is adapted to generate thrust: wherein the propulsion module comprises a first part (1) and a second part (2), each of which comprise a respective fairing (4, 10); the first part and the second part are separable from each other; the first part comprises the at least one electrochemical converter and the at least one electric motor; and the second part comprises a hydrogen storage housing of the hydrogen storage system for storing a reusable hydrogen storage unit. An aircraft comprising at least one such aircraft propulsion module.

An energy-independent water electrolysis fuel cell water vehicle system is suggested. The energy-independent water electrolysis fuel cell water vehicle system suggested in the present invention comprises: a water electrolysis processing unit for performing a water electrolysis process by using supplied water while power is not being received from the outside; a gas control unit for adjusting the pressure of a hydrogen gas produced through the water electrolysis process, storing the hydrogen gas in a hydrogen storage by using a gas compression method, and then supplying the hydrogen gas; a fuel cell for generating electrical energy on the basis of the supplied hydrogen gas; and a power control unit for supplying the generated electrical energy as a driving power for the energy-independent water electrolysis fuel cell water vehicle system.

An energy-independent water electrolysis fuel cell water vehicle system is suggested. The energy-independent water electrolysis fuel cell water vehicle system suggested in the present invention comprises: a water electrolysis processing unit for performing a water electrolysis process by using supplied water while power is not being received from the outside; a gas control unit for adjusting the pressure of a hydrogen gas produced through the water electrolysis process, storing the hydrogen gas in a hydrogen storage by using a gas compression method, and then supplying the hydrogen gas; a fuel cell for generating electrical energy on the basis of the supplied hydrogen gas; and a power control unit for supplying the generated electrical energy as a driving power for the energy-independent water electrolysis fuel cell water vehicle system.

A fuel cell vehicle includes fuel tanks, a first support mechanism, and a restricting member. The fuel tanks are disposed in a vehicle width direction to have longitudinal directions along a vehicle longitudinal direction. The fuel tanks include first and second fuel tanks. The first fuel tank is provided on an outer side in the vehicle width direction. The second fuel tank is adjacent to the first fuel tank. The second fuel tank has an axial center positioned higher than an axial center of the first fuel tank. In a case where a collision load acts from outside in the vehicle width direction, the first support mechanism supports the first fuel tank while allowing the first fuel tank to move toward a lower side of the second fuel tank. The restricting member is provided above the second fuel tank and restricts an upward movement range of the second fuel tank.

A fuel cell vehicle includes fuel tanks, a first support mechanism, and a restricting member. The fuel tanks are disposed in a vehicle width direction to have longitudinal directions along a vehicle longitudinal direction. The fuel tanks include first and second fuel tanks. The first fuel tank is provided on an outer side in the vehicle width direction. The second fuel tank is adjacent to the first fuel tank. The second fuel tank has an axial center positioned higher than an axial center of the first fuel tank. In a case where a collision load acts from outside in the vehicle width direction, the first support mechanism supports the first fuel tank while allowing the first fuel tank to move toward a lower side of the second fuel tank. The restricting member is provided above the second fuel tank and restricts an upward movement range of the second fuel tank.