The invention relates to fuel cell assemblies and in particular to improvements relating to sealing of such assemblies embodiments of which include a fuel cell assembly (200) comprising a membrane electrode assembly (104) a cathode separator plate (208) having a series of corrugations extending and providing air flo...

A fuel cell system that operates as its own hydrogen leak detector. The system comprises a fuel cell including at least one cathode and a cathode conduit for passage of oxidant gas through or over the cathode and a housing containing said fuel cell and defining a plenum around the fuel cell. A ventilation system is ...

An electrical connection system for cell voltage monitoring in a fuel cell stack. The fuel cell stack comprises a plurality of layers and a plurality of electrically conductive connection tabs extending outwardly from at least one face of the stack. The electrically conductive connection tabs are each formed as a la...

A fuel cell stack assembly has a plurality of fuel cells each having a fluid coolant conduit. A coolant feed inlet manifold has a coolant inlet and the coolant feed inlet manifold is coupled to each fluid coolant conduit for distribution of coolant to each fuel cell. The coolant feed inlet manifold also has a discha...

A computer peripheral device incorporates a fuel cell that may be used to supply power to a computer device coupled to the peripheral device. The peripheral device comprises a housing and circuitry within the housing to provide at least one computer peripheral function. A data interface provides for data transfer to...

A fuel cell stack assembly (30) comprises a fuel cell stack (31); an air flow plenum chamber (33) disposed on a face (4) of the stack (31) for delivering air to or receiving air from flow channels in the fuel cell stack (31) at least a part of the plenum chamber wall being defined by a printed circuit board the prin...

A method of starting operation of a fuel cell system (100) comprising a fuel cell stack (110), the method comprising the steps of: i) opening an anode inlet valve (153) to allow fuel to enter an anode volume of the fuel cell stack (110) ; ii) operating an air compressor (133) in fluid communication with a cathode ai...

Disclosed herein is a gas generator that contains a liquid reactant that reacts to produce a gas in the presence of a catalyst. The catalyst is contained in a carrier that is buoyant in the liquid reactant. The gas generator also has at least one carrier movement restraining member adapted to selectively control the...

A pair of fuel cells are configured as a hydrogen purity monitor. A first cell acting as a reference cell is configured to generate electrical current from the electrochemical reaction of hydrogen and oxidant and has a first fuel inlet configured to receive hydrogen from a first hydrogen source. A second fuel cell a...

The invention relates to a fuel cell system and associated method of manufacture. The fuel cell system has at least a first surface region and a second surface region wherein the first surface region is more hydrophilic than the second surface region wherein the first and second surface regions are arranged in accor...

A method of operating a fuel cell assembly comprising a plurality of fuel cells connected together for collectively providing power to a load each fuel cell including an anode and a cathode the method comprising selectively providing an electrical connection between the anode and the cathode of at least one of the f...

A method of shutting down operation of a fuel cell system (100) comprising a fuel cell stack (110), the method comprising the sequential steps of: i) ceasing a supply of fuel to the fuel cell stack (110); ii) closing a shut-off valve (120) on an exhaust line (122) in fluid communication with a cathode system of the ...

A method of operating a power adapter that includes an energy storage device and a fuel cell system including a fuel supply and a fuel cell stack the method including determining a connectivity state of an auxiliary power source and a load with the power adapter and selecting a power adapter operation mode based on ...

ABSTRACT FUEL CELL ASSEMBLY A fuel cell assembly (100) comprising: an enclosure (120) for mounting a fuel cell stack (110) therein, the enclosure comprising an air flow path (160) extending between an air inlet (180) and an air outlet (190); and a fuel cell stack (110) having a plurality of cathode air coolant path...

A fuel cell stack assembly comprising: a first encapsulation member (302) comprising a first end plate and two side walls extending transversely from the first end plate; a second encapsulation member (304) comprising a second end plate; one or more fuel cells (330) located between the first end plate and second end...

A water reactive hydrogen fueled power system includes devices and methods to combine reactant fuel materials and aqueous solutions to generate hydrogen. The generated hydrogen is converted in a fuel cell to provide electricity. The water reactive hydrogen fueled power system includes a fuel cell a water feed tray a...

PLATE PROCESSING A method of processing a linked series of metallic plates, in which each plate (9) is connected to an adjacent plate along adjoining edges (8), the method comprising: providing the series of plates as a first fan-folded stack of plates (1); drawing the plates in sequence from the stack; applying a ...

Systems devices and methods combine thermally stable reactant materials and aqueous solutions to generate hydrogen and a non toxic liquid by product. The reactant materials can sodium silicide or sodium silica gel. The hydrogen generation devices are used in fuels cells and other industrial applications. One system ...

A fuel cell assembly comprising a plurality of fuel cell plates in a stack. The stack defines an air inlet face and/or an air outlet face; and two opposing engagement faces. The fuel cell assembly also comprises a detachable cover configured to releasably engage the two engagement faces in order to define an air cha...

A current collector component (206) for a fuel cell. The current collector component (206) comprises a first electrically conductive plate (210) configured to form a wall of a fluid confinement volume of a fuel cell; and a second electrically conductive plate (212) in electrical contact with the first electrically c...

An energy resource network (100) comprising: a plurality of energy resources (102 104) each capable of delivering a quantum of energy; and a plurality of energy consuming devices (106 108) each capable of accepting a quantum of energy. Each energy resource (102 104) is associated with an energy resource processor (1...

A separator plate in an air cooled fuel cell comprises a series of airflow channels each channel extending longitudinally between first and second opposing edges of the separator plate. Each channel has a cross sectional profile defining an airflow cross section at points along the length of the channel and at least...

A mechanism for transferring a flexible sheet material (202) from a first substrate (203) to a second substrate (204) the mechanism having a head rotatable and translatable relative to the first and second substrates the head (201) comprising a cylindrical curved portion (205) having an outer face (207) across which...

A mains power adaptor (1) incorporating a fuel cell (5) for providing alternative power to a low voltage portable device when no mains power is available. The adaptor (1) includes electrical pins (4) configured to connect with a mains power supply socket; a power converter circuit (7) having an input coupled to the ...

A method of assembling a fuel cell plate assembly the method comprising: placing a bipolar plate on a build point platform (1602); placing a prefabricated first fluid diffusion layer on and in alignment with the bipolar plate (1606); dispensing a first track of adhesive adjacent both the bipolar plate and a peripher...

A fuel cell stack assembly comprises a stack of fuel cells each fuel cell having a cooling air conduit with an input / output ventilation aperture disposed on a ventilation face of the stack. The ventilation apertures form an array over said ventilation face of the stack. A first fan is configured to direct air flow...

t tAn apparatus (10) configured to determine reactant purity comprising; a first fuel cell (11) configured to generate electrical current from the electrochemical reaction between two reactants having a first reactant inlet (13) configured to receive a test reactant comprising one of the two reactants from a first r...

A fuel cell system comprises an antimicrobial patterned surface. The fuel cell system may comprise a fuel cell stack a coolant reservoir and a coolant flow path configured to supply coolant from the coolant reservoir to the fuel cell stack. One or more of the fuel cell stack the coolant reservoir and the coolant flo...

An electrochemical fuel cell has a membrane-electrode assembly (MEA) having a cathode face and an anode face being disposed between a cathode fluid flow field plate and an anode fluid flow field plate. Each fluid flow field plate has fluid distribution conduits in a first surface thereof facing the respective cathod...

A detachable and portable fuel cell power unit for a vehicle has a unitary housing containing: a fuel reservoir for storing fuel; at least one electrochemical fuel cell stack for delivering electrical power from the fluid fuel; a refuelling port in an outer surface of the housing; and an airflow path extending betwe...

One or more operating parameters, such as electrical current flow from and air flow to, a fuel cell stack within a fuel cell assembly is periodically modulated during rehydration intervals to intermittently increase hydration levels of the fuel cell stack independently of the electrical current demand on the fuel ce...

ABSTRACT GASKETS FOR FUEL CELLS A gasket for sealing internal surfaces of a fuel cell and formed of compressible material, the gasket comprising a first sealing surface and a second sealing surface for providing a fluid seal against opposing faces of a first fluid flow field plate and a second fluid flow field pla...

ABSTRACT FUEL CELL FLUID DISTRIBUTION PLATES A fluid flow field plate for use in a fuel cell, the plate comprising a first plurality of channels formed in a first surface thereof and extending across the first surface in a predetermined pattern, the plate having a folded region along a lateral edge, the folded regi...

A method of operating a fuel cell system (100) comprising a fuel cell stack (110) and a closed loop water cooling circuit for direct injection of cooling water into the stack (110), the method comprising: measuring an operational parameter of the fuel cell system (100) over a time period; adding an amount of water t...

The invention relates to a method and apparatus for assembling a laminated fuel cell in which an assembly head comprising one or more punches is used for dividing portions from sheet material and for transferring the portions to an electrode plate for lamination. Embodiments disclosed include a method of assembling ...

An electrical connection system for cell voltage monitoring in a fuel cell stack. A fuel cell stack assembly comprises a plurality of fuel cells disposed in a stacked configuration each cell substantially parallel to an x y plane and including an electrical tab extending laterally from an edge of a plate in the cell...

The disclosure relates to a fuel cell stack and corresponding method of operating the fuel cell stack. The method comprises: determining a maximum allowable current that may be drawn from the fuel cell stack; repeatedly determining a magnitude of change to the prevailing maximum allowable current based on a prevaili...

A fuel supply apparatus comprising; a reaction chamber for hosting a reaction when a fuel generating fluid and a fuel generating substance are brought together to generate fuel a plurality of discrete fuel generating fluid chambers each chamber being separately rupturable; and a heater assembly adapted to when in us...

A fuel cell stack assembly comprises a plurality of fuel cells in a stack the stack defining two opposing parallel end faces. An end plate is disposed at each opposing end face of the stack. Each end plate defines a compression surface adjacent to and in compressive relationship with a respective one of the two oppo...

A bipolar fluid flow plate for an electrochemical assembly comprises a plurality of first fluid flow channels extending across a face of the flow plate to define a first fluid flow field of the fluid flow plate and a plurality of second fluid flow channels extending across a face of the flow plate to define a second...

A fuel cell stack assembly comprises a plurality of fuel cells in a stack the stack defining two opposing parallel end faces. An end plate assembly is provided at each opposing end face of the stack. The end plate assemblies are coupled together to thereby maintain the fuel cells in the stack under compression. At l...

A gasket formed of compressible material and having a first sealing surface and a second sealing surface for providing a fluid seal between a first component and a second component, a plurality of cavities provided within the gasket proximate the first and/or second sealing surfaces and extending over at least a fir...

A bipolar fuel cell plate (300) for use in a fuel cell comprising a plurality of flow field channels (704) and a coolant distribution structure (708) formed as part of the fluid flow field plate. The coolant distribution structure is configured to direct coolant droplets (701) into the flow field channels. The coola...

A fluid flow plate for an electrochemical assembly has a plurality of first fluid flow channels extending across an active area of the flow plate to define a first fluid flow field of the fluid flow plate and a plurality of second fluid flow channels extending across the active area of the flow plate to define a sec...

A flexible fuel cell power system comprising one or more fuel cell cartridges (which contain fuel cell modules) connected to a fuel cell system is provided. The components of the flexible fuel cell power system may be placed on a shared backbone with flexible joints and may be made of flexible materials so that the ...

A method for operating a fuel cell system comprising a fuel cell assembly of a plurality of fuel cells configured to generate electrical power from a fuel flow and an oxidant flow to the plurality of fuel cells, the fuel cell assembly arranged in combination with a coolant storage module configured to supply the fue...

Separator plates (108; 300; 400; 410) for fuel cell assemblies have a first edge (110, 310) and a second, opposing edge (111, 311). The fuel cell separator plates define a series of airflow channels (112, 113, 312, 313, 401, 411) extending longitudinally between the first and second edges. The airflow channels can b...

The present disclosure pertains to an unmanned aerial vehicle system. Some exemplary implementations may include: a mounting frame (110) onto which at least a payload (30) is affixed; a plurality of fuel cell stacks (50) operable in a predefined configuration, each of the plurality of stacks (50) being in a separate...

The present disclosure pertains to a system (5) comprising a plurality of power converters (20-1 to 20-n) configured, via a processing device (30), to balance heat from a plurality of fuel cell stacks (10-1 to 10-n). Some embodiments may: set one or more parameter values of one of the power converters (20-1) located...

Aspects of duct systems for use with fuel cells and methods of using the same are disclosed. According to an aspect of the disclosure, a duct system (10) for cooling fuel cells (12) via a coolant fluid includes a housing (100); a cooling chamber (112); an inlet port (120) configured to receive the coolant into the s...

Aspects of managing fluid diffusion across active regions of one or more of a cathode and anode are disclosed herein, aspects include a method of efficient fluid distribution within an MEA (20) by forming a fluid confinement space with a sealing gasket (50) forming placed on at least one of an anode and a cathode of...

Disclosed herein are aspects of methods to control airflow to a fuel cell stack and a cooling fan within a housing by fluidly connecting a predetermined minimum volume of airflow through the housing to the fan and a series of louvres, adjustable apertures, and bypass valves dynamically adjust the air flow to at leas...

A system may be configured to cool and provide oxidant to an open cathode proton-exchange membrane (PEM) fuel cell (FC) stack comprising a plurality of FCs configured to operationally receive a first amount of fluid. Some embodiments may have the first amount be non-zero, and a controller may be configured to adjust...