A fuel cell mount apparatus includes a plurality of fuel cell stacks, a pipe arrangement, a fluid adjustment part, a pressure detection part, and a control device. The pipe arrangement is individually connected to each of the fuel cell stacks. The fluid adjustment part adjusts a pressure or a flow rate of a fluid which flows through the pipe arrangement. The pressure detection part is disposed on a portion which requires a desired pressure or flow rate of the fluid in the pipe arrangement and detects the pressure of the fluid. The control device controls the fluid adjustment part on the basis of a detection result of the pressure detection part.

System for recirculating hydrogen in a fuel cell including a tank having an inlet connectable to an outlet of the fuel cell and an outlet connectable to a line for feeding hydrogen to the fuel cell; the recirculation system includes a first check valve and a second check valve; the first check valve can be inserted between the outlet of the fuel cell and the inlet of the tank, for adjusting a flow from the fuel cell to the tank whilst the second check valve can be inserted between the outlet of the tank and the hydrogen feed line, for adjusting a flow of hydrogen from the tank to the feed line.

A gas supply system includes: a plurality of tanks that are filled with a gas; a supply pipe that branches and is connected to the plurality of tanks and supplies the gas to a destination of supply; a plurality of shutoff valves that shut off connections between the plurality of tanks and the supply pipe; a plurality of temperature measuring units that measures an internal temperature of the plurality of tanks; and a control unit that determines the shutoff valve that is to be opened first out of the plurality of shutoff valves by using the internal temperatures of the plurality of tanks, which are measured at a time of start of the supply of the gas, when the control unit switching the plurality of shutoff valves from a closed state to an open state at the time of start of the supply of the gas.

A fuel cell system includes an air pump configured to supply air to a fuel cell, and a discharge flow rate determination unit which determines a discharge flow rate of the air pump when warming up the fuel cell, in accordance with a speed of a vehicle in which the fuel cell and the air pump are installed, or a required drive output of the vehicle. The discharge flow rate determination unit increases the discharge flow rate in the case that the speed or the required drive output is greater than or equal to a predetermined threshold value, and decreases the discharge flow rate in the case that the speed or the required drive output is less than the predetermined threshold value.

An underwater liquid supply unit includes a first bladder containing a first liquid, a second bladder containing a second liquid, and a third bladder containing a third liquid. The combined volume of the first liquid, second liquid, and third liquid is neutrally buoyant relative to a surrounding medium the liquid supply unit is disposed in (e.g., in seawater). As the first liquid, second liquid, and third liquid are dispensed from the bladders, the bladders may reduce in size in at least one dimension. As the liquids are dispensed, the liquids may be dispensed in a predetermined volumetric ratio based on the density of the liquids to maintain neutral buoyancy of the combined volume of liquid. The underwater liquid supply unit may also include an integrated generator such as a fuel cell, as well as a propeller.

The present invention relates to a method for adjusting an operating mode of a fuel cell system (1) comprising: at least one fuel cell stack (2) having an anode portion (3) and a cathode portion (4); an anode supply line (5) for conveying fuel from a fuel source (6) to the anode portion (3); a fuel supply device (7) for supplying the fuel in the anode supply line (5) to the anode portion (3); an anode discharge line (8) for discharging anode exhaust gas from the anode portion (3) into the environment; and a purge unit (9) for purging the anode portion (3); said method comprising the steps of: determining a purge start time and/or a purge duration in which the anode portion (3) is intended to be purged by the purge unit (9); and shifting the fuel supply device (7) from a normal operation into a fuel-supply operation specific to the purge operation on the basis of the determined purge start time and/or purge duration, wherein the shifting into the fuel-supply operation specific to the purge operation is carried out temporally before and/or during the determined purge duration. The invention also relates to a fuel cell system (1), a computer program product (16) and a memory means having a computer program product (16) stored thereon for carrying out the method according to the invention.

A Multi-Mode Regenerative Fuel Cell system comprising a non-flow thru fuel cell operatively coupled to a high or medium pressure electrolyzer; a distributed reactant storage assembly comprising at least one hydrogen storage means and at least one oxygen storage means, said distributed reactant storage assembly operatively coupled to said fuel cell and electrolyzer; a pilot oxygen storage means operatively coupled to said oxygen storage means; a water storage means operatively coupled to said fuel cell and electrolyzer, and an aircraft power load operatively coupled to said fuel cell and electrolyzer.

A hydrogen-electric engine includes a fuel cell stack including a plurality of fuel cells. Each fuel cell of the plurality of fuel cells includes an anode and a cathode. The hydrogen-electric engine also includes an air compressor system configured to supply compressed air to the cathode, a hydrogen fuel source configured to supply hydrogen gas, an elongated shaft supporting the air compressor system and the fuel cell stack, and a motor assembly disposed in electrical communication with the fuel cell stack. Each fuel cell generates a voltage, as an open cell voltage, by forming water with the supplied compressed air and the supplied hydrogen gas and is electrically coupled with a clamp circuit.

Systems and methods are provided for an integrated air filter assembly for a multiple fuel cell powertrain. The integrated air filter assembly can include a common inlet to pull air from a single plenum of the hood, where the intake path can be split into multiple ducts providing air flow into each respective fuel cell. Each duct can include a dedicated air filter to filter the incoming air. The assembly can also include flexible seal to adapt to the unique hood/plenum shape of different OEM plenums/intakes.

In a device and a method for guiding a hydrogen fueled vehicle based on a hydrogen pressure of a fuel tank of the hydrogen charging station, information on a hydrogen charging station including the hydrogen pressure of the fuel tank of the hydrogen charging station is received from a server, and a charging station determined to be suitable for charging the hydrogen fueled vehicle is selected in consideration of an importance of each item obtained from a user of the hydrogen fueled vehicle based on items including at least one of a price of hydrogen charging, a charging standby time, a charging taking time, whether the hydrogen fueled vehicle is able to be fully charged, and a distance to the hydrogen charging station determined based on the information on the hydrogen charging station.