A valve device for controlling an air flow of a fuel cell stack includes: a housing connected to the fuel cell stack and including a plurality of manifolds formed therein; a disk rotatably provided in the housing to control the air flow of the fuel cell stack; and a central shaft provided at the center of the housing to rotate the disk.

A controller according to an embodiment controls a hydrogen system including at least a hydrogen production system in which received power is planned in advance and a hydrogen production amount changes in accordance with the received power. The controller includes: a processor that calculates, in a preparation time period before a demand adjustment time period in which a target value of the received power is set in advance, a control command value such that input power to be inputted as the received power to the hydrogen production system matches the target value at a start of the demand adjustment time period; and a command controller that outputs the control command value calculated by the processor to the hydrogen production system.

A fuel cell system is provided that includes a fuel cell with an assembly of multiple individual cells, each of which has an anode section, an electrolyte membrane, and a cathode section, an anode gas supply, which leads to an anode gas inlet and includes a fuel cell and a fuel metering device, a cathode gas supply, and a passive anode gas recirculation device, which connects an anode gas outlet to the recirculation gas inlet of a mixer arranged in the anode gas supply. The fuel cell system is started up after a standstill in that in a first phase, the fuel cell is activated while fuel is supplied from the fuel source, and the anode recirculation is suppressed without actively blocking the anode gas recirculation device, and in a second phase, anode gas is recirculated in addition to the supply of fuel from the fuel source.

A fuel cell device with a fuel tank which has a fuel supply line which is branched into fuel portion supply lines, having a plurality of fuel cell stacks which stacks each have, on the anode inlet side, a fuel connection which is respectively fluidically connected to one of the fuel portion supply lines. Exclusively one of the fuel cell stacks is connected on the anode outlet side to a fuel recirculation line. The flow guidance of the fuel recirculation line is selected in such a way that the fuel can be returned exclusively into the fuel cell stack connected to the fuel recirculation line. Furthermore, a method for operating the fuel cell device is provided.

A fuel cell system includes a fuel cell unit having an air inlet, a fuel inlet and an electrical energy outlet and a fuel cell exhaust outlet and a turbo-compressor unit to convert air from an air supply to compressed inlet air for the fuel cell unit. The turbo-compressor unit comprising a turbine and a compressor connected to a common rotatable shaft. The system also includes means for obtaining conditioned air exhausted from an enclosed space and directing the conditioned exhaust air to the turbine of turbo-compressor unit such that the conditioned exhaust air is expanded by the turbine causing rotation of the shaft and corresponding rotation of the compressor, means for providing air from the air supply to the compressor to be compressed and output from the compressor unit and provided as compressed inlet air to the air inlet of the fuel cell unit.

A fuel cell and a method for regenerating this fuel cell, including a supply of the fuel cell by the main supply conduit by a fluid having a nominal flow rate and a nominal molar fraction of combustion agent, during a regeneration phase of a given group, a switching of the inlet, outlet and recirculation switches of the fluid circuit so as to supply the given group from the recirculation line of the given group and from a fluid discharge line of at least one other group, an application of a regeneration voltage Ve to the cells of the given group, Ve being less than or equal to 0.3V.

A fuel cell vehicle includes a travel prohibition control unit. In the case where a lid sensor detects an open state of a lid, the travel prohibition control unit performs travel prohibition control to prohibit travel of the fuel cell vehicle. In the case where the number of shift control operations has reached a release number within release time, the travel prohibition control unit releases the travel prohibition control, and in the case where the number of shift control operations has not reached the release number within the release time, the travel prohibition control unit continues the travel prohibition control. The release number is two or more.

A fuel cell system including a fuel cell stack comprising at least one fuel cell and having an anode inlet, a cathode inlet, an anode off-gas outlet, a cathode off-gas outlet, and defining separate flow paths for flow of anode inlet gas, cathode inlet gas, anode off-gas and cathode off-gas. The fuel cell system further comprises a reformer for reforming a fuel to a reformate, the reformer comprising a reformer inlet for anode inlet gas, a reformer outlet for exhausting anode inlet gas, and a reformer heat exchanger. There is also provided a a pre-heater for heating cathode inlet gas, the cathode inlet gas pre-heater comprising a pre-heater inlet for cathode inlet gas, a pre-heater outlet for exhausting cathode inlet gas, and a pre-heater heat exchanger, and a heat source for providing heat source gas.

An air intake assembly for a centrifugal blower having a casing having an axial inlet and a radial outlet, an impeller disposed within the casing for drawing a gaseous medium at a first pressure into the axial inlet and expelling gaseous medium at a second higher pressure through the radial outlet, and a motor for driving the impeller, including an air intake assembly casing having an air inlet and an air outlet, the air outlet connectable to the axial inlet of the blower casing of the centrifugal blower, and a check valve mounted within the air intake assembly casing positioned to permit air flow from the air inlet through the air intake assembly casing to the air outlet and prevent air flow from the air outlet through the air intake assembly casing to the air inlet.

The present invention is a method for producing electricity comprising a fuel cell which makes it possible to valorize the heat given off by the cell to generate fuel for said fuel cell by a process of thermal dissociation, applied to the product of the same chemical composition than that produced by the cell, at least part of the heat given off by the cell being supplied to at least one of the endothermic reactions of said dissociation process.