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Fuel Cell Stack patents

      

This page is updated frequently with new Fuel Cell Stack-related patent applications.




patent app List of recent Fuel Cell Stack-related patents
 Fuel cell stacks with increased natural frequency patent thumbnailFuel cell stacks with increased natural frequency
In certain configurations and applications, fuel cell stacks can be subject to damage arising from resonance. For instance, the natural frequency of lengthy automotive fuel cell stacks can be low enough to be problematic.
Ford Motor Company


 Anode bleed control in a fuel cell stack patent thumbnailAnode bleed control in a fuel cell stack
An electrochemical fuel cell assembly comprises a fuel cell stack having a fuel delivery inlet and a fuel delivery outlet. The fuel cell stack further includes a number of fuel cells each having a membrane-electrode assembly and a fluid flow path coupled between the fuel delivery inlet and the fuel delivery outlet for delivery of fuel to the membrane-electrode assembly.
Intelligent Energy Limited


 Motor vehicle,  controlling a fill level of a water tank in a motor vehicle that comprises a fuel cell system, and use of signals and/or data of a motor vehicle state and/or of a motor vehicle environment patent thumbnailMotor vehicle, controlling a fill level of a water tank in a motor vehicle that comprises a fuel cell system, and use of signals and/or data of a motor vehicle state and/or of a motor vehicle environment
A motor vehicle including a fuel cell system having multiple fuel cells that are stacked into a fuel cell stack and a first water cooling circuit for cooling the fuel cell stack. The first water cooling circuit has a water tank system with a first water tank, a first water delivery device that is arranged between the first water tank and the fuel cell stack and a water separator that is arranged between the fuel cell stack and the first water tank.
Bayerische Motoren Werke Aktiengesellschaft


 Electrolyte forming process patent thumbnailElectrolyte forming process
Wherein the slurry in step b. Comprises doped-ceria powder with a physical property selected from bimodal particle size distribution, a bet surface area in the range 15-40 m2/g, a spherical morphology, or combinations thereof together with an electrolyte obtained by the process, a fuel cell and fuel cell stack, comprising the electrolyte, and the use of the fuel in the generation of electrical energy..

 Electrolyte forming process patent thumbnailElectrolyte forming process
Together with an electrolyte obtained by the process, a fuel cell and fuel cell stack, comprising the electrolyte, and the use of the fuel in the generation of electrical energy.. .

 Fuel cell sub-assembly and  making it patent thumbnailFuel cell sub-assembly and making it
A sub-assembly for an electrochemical stack, such as a pem fuel cell stack, has a bipolar plate with sealing material extending from its upper face, around the edge of the bipolar plate, and onto its lower face. The bipolar plate is preferably a combination of an anode plate and a cathode plate defining an internal coolant flow field and bonded together by sealing material which also provides a seal around the coolant flow field.
Hydrogenics Corporation


 Electrode catalyst, composition for forming gas diffusion electrode, gas diffusion electrode, membrane-electrode assembly, and fuel cell stack patent thumbnailElectrode catalyst, composition for forming gas diffusion electrode, gas diffusion electrode, membrane-electrode assembly, and fuel cell stack
Provided is an electrode catalyst that can exhibit sufficient performance, is suitable for mass production, and is suitable for reducing production costs, even when containing a relatively high concentration of chlorine. The electrode catalyst has a core-shell structure including a support; a core part that is formed on the support; and a shell part that is formed so as to cover at least one portion of the surface of the core part.
N.e. Chemcat Corporation


 Electrode catalyst, composition for forming gas diffusion electrode, gas diffusion electrode, membrane-electrode assembly, and fuel cell stack patent thumbnailElectrode catalyst, composition for forming gas diffusion electrode, gas diffusion electrode, membrane-electrode assembly, and fuel cell stack
Provided is an electrode catalyst that can exhibit sufficient performance, is suitable for mass production, and is suitable for reducing production costs, even when containing a relatively high concentration of chlorine. The electrode catalyst has a core-shell structure including a support; a core part that is formed on the support; and a shell part that is formed so as to cover at least one portion of the surface of the core part.
N.e. Chemcat Corporation


 Production  electrode catalyst, electrode catalyst, composition for forming gas diffusion electrode, gas diffusion electrode, membrane-elecrode assembly (mea), and fuel cell stack patent thumbnailProduction electrode catalyst, electrode catalyst, composition for forming gas diffusion electrode, gas diffusion electrode, membrane-elecrode assembly (mea), and fuel cell stack
Provided is a production method of an electrode catalyst that can reduce the content of chlorine species reliably and sufficiently through a simple operation, even when using an electrode catalyst precursor containing a high concentration of chlorine (cl) species as a raw material of the electrode catalyst. The production method of the electrode catalyst has a core-shell structure including a core part formed on a support and a shell part formed to cover at least a part of a surface of the core part.
N.e. Chemcat Corporation


 Charger of low voltage battery and method thereof patent thumbnailCharger of low voltage battery and method thereof
A low voltage battery charger is provided that includes a fuel cell stack that generates electrical energy by a reaction of hydrogen and oxygen and an air blower that supplies air to the fuel cell stack. A high voltage dc converter converts an output voltage generated at the fuel cell stack to a high voltage.
Hyundai Motor Company


Fuel cell stack assembly and operating the same


A fuel cell stack assembly and method of operating the same are provided. The assembly includes a fuel cell stack column and side baffles disposed on opposing sides of the column.
Bloom Energy Corporation


Fuel cell stack


A fuel cell stack includes unit cells, a resin load receiver, and a connecting member. The resin load receiver is provided in each of a first and second separators.
Honda Motor Co., Ltd.


Fuel cell and fuel cell stack


A fuel battery and a fuel cell stack, the fuel battery including: a fuel cell that generates electric power through a power generating reaction of reactant gases and includes a solid electrolyte layer having a first main surface and a second main surface, a first electrode disposed on the first main surface and serving as one of a cathode and an anode, and a second electrode disposed on the second main surface and serving as the other one of the cathode and the anode; an interconnector disposed so as to face the first electrode; and a current collecting member that electrically connects the first electrode to the interconnector. The first electrode includes: an inner portion connected to the current collecting member; and an outer portion disposed outward of the current collecting member and having a height larger than the height of the inner portion..
Ngk Spark Plug Co., Ltd.


Fuel cell case and ventilation cover


A fuel cell case containing a fuel cell stack includes a side face that has an opening for ventilation; a frame body that is located outside of the case along the periphery of the opening; and a louver that is fixed to inside of the frame body. The louver has a plurality of blades arranged to be separated from one another.
Toyota Jidosha Kabushiki Kaisha


Production electrode catalyst, electrode catalyst, composition for forming gas diffusion electrode, gas diffusion electrode, membrane-electrode assembly (mea), and fuel cell stack


The method is to produce an electrode catalyst having a core-shell structure including a support, a core part formed on the support and a shell part formed to cover at least a part of a surface of the core part. The method includes a first step (1) of retaining a liquid containing ultrapure water, a reductant such as a hydrogen-containing gas and an electrode catalyst precursor under at least one stage of a predetermined temperature for a predetermined retention time, such electrode catalyst precursor being produced using a material containing chlorine (cl) species, and exhibiting a chlorine (cl) species concentration not lower than a predetermined first chlorine (cl) species concentration when measured by x-ray fluorescence (xrf) spectroscopy..

Dummy cell and fuel cell stack


A dummy cell laminated on a fuel cell stack and configured not to perform power generation includes: a common appearance portion having an appearance common with an appearance of a power generation cell used in the fuel cell stack and configured to perform power generation; and a non-common appearance portion having an appearance different from the appearance of the power generation cell.. .
Toyota Jidosha Kabushiki Kaisha


Fuel cell stack


A fuel cell stack includes a first power generation unit and a second power generation unit. Wave-like first fuel gas flow passages of the first power generation unit and wave-like first fuel gas flow passages of the second power generation unit are set to mutually different phases.
Honda Motor Co., Ltd.


Heater and operating


A plurality of heaters is provided where each of the plurality of heaters includes a fuel cell stack assembly having a plurality of fuel cells which convert chemical energy from a fuel into heat and electricity through a chemical reaction with an oxidizing agent. Each of the plurality of fuel cells also includes a conductor electrically connecting the fuel cell stack assembly to an electronic controller which monitors and controls electric current produced by the fuel cell stack assembly.
Delphi Technologies, Inc.


Fuel cell vehicle and mounting fuel cell stack on vehicle (as amended)


A fuel cell vehicle which a fuel cell stack is mounted on comprises a stack case that is configured to place the fuel cell stack therein; mounts that are configured to fix the stack case to a vehicle body; ribs, each being provided to be extended from a position adjacent to the mount across an upper surface of the stack case; and a damping member that is provided between adjacent ribs on the upper surface of the stack case. The damping member is a material formed by applying an aluminum sheet on butyl rubber.
Toyota Jidosha Kabushiki Kaisha


Fuel cell system including multiple fuel cell stacks


A fuel cell system (100), which includes multiple fuel cell stacks (10, 20) having a pair of adjacent fuel cell stacks (10, 20), namely a first fuel cell stack (10) and a second fuel cell stack (20), each including multiple fuel cells (2), as well as multiple main channels (11, 12, 13) which penetrate the fuel cell stacks (10, 20) for distributing the operating agents to the individual fuel cells (2) is provided. It is provided that the fuel cell stacks (10, 20) of one pair are situated in such a way that a sequence of the main channels (11, 12, 13) is mirror-symmetrical to a plane running between the adjacent fuel cell stacks (10, 20) of the pair, with respect to the different operating agents..
Volkswagen Ag


Method for operating a fuel cell stack


A method for operating a fuel cell stack which includes a number of fuel cells and at least one gas circuit, where the fuel cells are supplied on the gas inlet side with oxygen and hydrogen as reaction gases, and where at least oxygen is circulated in the fuel cells via the gas circuit, so as to provide a fuel cell stack with a simple structure and reliable intergas removal.. .
Siemens Aktiengesellschaft


Method for changing a fuel cell system over to a standby mode as well as such a fuel cell system


E) switching off the load withdrawal via the external electric circuit at the latest when a prescribed minimum limit voltage of the fuel cell stack has been reached.. .

Fuel cell module


A fuel cell module includes a fuel cell stack, a reformer, and an exhaust gas combustor. The fuel cell module further includes an exhaust gas combustion chamber equipped with the exhaust gas combustor and a preheating unit for heating a raw fuel by combustion exhaust gas produced in the exhaust gas combustor before the raw fuel is supplied to the reformer.
Honda Motor Co., Ltd.


Systems and methods for detecting leaks in a fuel cell system


Systems and methods for detecting and validating a leak in a fuel cell system are presented. In certain embodiments, various fuel cell stack set points may be adjusted such that adequate h2 flow data may be obtained to identify and validate an h2 leak and/or a location of such a leak.
Gm Global Technology Operations Llc


Coolant purification


A fuel cell system comprising a fuel cell stack is disclosed. An ozone generator is configured to introduce ozone into a coolant in the fuel cell system.
Intelligent Energy Limited


Fuel cell separator and fuel cell stack and reactant gas control method thereof


A fuel cell separator, a fuel cell stack having the fuel cell separator, and a reactant gas control method of the fuel cell stack are provided. That is, even when the fuel cell stack operates under the low load operation condition, a reactant gas is supplied to the reactant gas passages of the fuel cell separator, and thus, the length of the passage can be shortened by 50% as compared with the prior art having only one reactant gas passage.
Doosan Corporation


Solid oxide fuel cell stack and manufacturing method therefor


A solid oxide fuel cell stack having a plurality of fuel cells, a metallic layer disposed between adjacent fuel cells, a first conductive material layer disposed between the metallic layer and a first fuel cell of the adjacent fuel cells so as to electrically connect the metallic layer and the first fuel cell, and a second conductive material layer disposed between the metallic layer and a second fuel cell of the adjacent fuel cells so as to electrically connect the metallic layer and the second fuel cell.. .
Murata Manufacturing Co., Ltd.


H2-cl2 proton exchange membrane fuel cells, fuel cell assemblies including the same and systems for cogeneration of electricity and hcl


Fuel cells and, more particularly, the h2—cl2 proton exchange membrane fuels cells are described. In some embodiments the fuel cells include a flow through electrolyte assembly that is configured to allow the introduction of a first (relatively dilute) electrolyte into the cell, and the remove of a second (relatively concentrated) electrolyte from the cell.

Fuel cell system and controlling the same


A fuel cell system and a method of controlling the fuel cell system are provided. The fuel cell system includes at least one bypass valve that is disposed between a passage in an inlet of a fuel cell stack and a bypass passage that is branched from the passage within the inlet and that is connected to a discharge port of the fuel cell stack.

Operating a fuel cell system


An operating method is provided for a fuel cell system with a radiator structure which is flowed through by ambient air and a fuel cell stack, at least part of the outgoing air flow of the fuel cell stack can be guided onto the radiator structure such that, at the radiator structure, the guided outgoing air flow causes an increase in mass flow of the ambient air through the radiator structure according to the jet pump principle. At least part of the outgoing air flow of the fuel cell stack can be guided through a gas expansion machine.

Fuel cell system, motor vehicle containing a fuel cell system, and operating a fuel cell system


A fuel cell system is provided having a plurality of fuel cells combined to form a fuel cell stack. The fuel cell system is characterized in that at least one fuel cell is a redox flow fuel cell having an electrode assembly, which electrode assembly has a proton-permeable separator, which separator is arranged between an anode region and a cathode region.

Fuel cell system as well as vehicle having such a fuel cell system


A fuel cell system including: a fuel cell stack; a cathode gas supply source including a cathode supply path for feeding cathode operating gas into the fuel cell stack and a cathode exhaust gas path for discharging cathode exhaust gas out of the fuel cell stack, and a fuel cell cooling system for cooling the fuel cell stack including a coolant path into which the fuel cell stack is integrated so as to transfer heat is provided. It is provided that the cathode gas supply source also includes a turbine arranged in the cathode exhaust gas path, and the coolant path of the fuel cell cooling system in the flow path of the cathode exhaust gas downstream from the turbine is in heat-transferring contact with the cathode exhaust gas path.

Membrane electrode assembly with frame, fuel cell single cell, and fuel cell stack


A membrane electrode assembly with frame includes a membrane electrode assembly 2 in which an electrolyte membrane 11 is held between a pair of electrode layers 12, 13; and a resin frame 1 disposed around the membrane electrode assembly 2. The frame 1 includes an opening 1a in which the membrane electrode assembly 2 is disposed, a step 1b that is formed along an edge of the opening, and an inner peripheral portion 1c that is deviated to one side of the frame due to the step 1b.

Power net system for fuel cell vehicle and controlling the same


A power net system for a fuel cell vehicle includes: a diode having a first end connected to an output stage of a fuel cell stack; a fuel cell load device branched and connected between the output stage of the fuel cell stack and the diode; a first relay positioned between the output stage of the fuel cell stack and the fuel cell load device and configured to connect or separate the output stage of the fuel cell stack and the fuel cell load device; and a second relay having a first end connected to a second end of the diode and a second end connected between the first relay and the fuel cell load device.. .

Open-loop fuel cell stack start-up with low-voltage source


A fuel cell system is provided that includes a fuel cell stack and an air compressor in communication with a cathode inlet, a hydrogen source in communication with an anode inlet, and a start-up battery adapted to power the air compressor. The start-up battery is at least one of a low-voltage battery and a high-voltage battery.

Complex fuel cell stack with hydrogen storage unit


A complex fuel cell stack with hydrogen storage unit is introduced. Through the new configuration of the pem fuel cell stack, no cooling system and cooling fluid is needed for the fuel cell stack, since hydrogen storage vessel can act as a heat sink to protect the expensive catalyst layer of the mea of the fuel cell away from over-heated and damaged.

Fuel cell stack


Disclosed herein is a fuel cell stack with improved manufacturing performance. The fuel cell stack includes: a separator that comprises a diffusion part, as being provided with a diffusion channel, configured to distribute reaction gas and cooling water and a reaction part, as being continuously formed from the diffusion part and provided with a reaction channel that has a height greater than that of the diffusion channel, configured to move reaction gas distributed from the diffusion part and generate electrons by a chemical reaction; and a gas diffusion layer configured to contact the separator at the diffusion part and the reaction part..

Fuel cell stack


A fuel cell stack includes a stacked body, a first insulator, and a first shim. The stacked body includes electrolyte-electrode assemblies and separators.

Fuel cell stack assembly


A fuel cell stack assembly (101) comprising a fuel cell stack (102) comprising one or more fuel cells and a retaining member (100) comprising a first engaging region (104) that engages a first end face (110) of the fuel cell stack (102), a second engaging region (106) that engages a second opposing end face (112) of the fuel cell stack (102, and a joining region (108) configured to bias the first engaging region (104) towards the second engaging region (106). The retaining member (106) defines a fluid chamber (118) for communicating a fluid to or from the fuel cell stack (102)..
Intelligent Energy Limited


Fuel cell module


A fuel cell module includes a fuel cell stack and fc peripheral equipment. The fc peripheral equipment includes an evaporator.
Honda Motor Co., Ltd.


Fuel cell module


A fuel cell module includes a fuel cell stack and fc peripheral equipment. In the fuel cell module, a stress relaxing portion for relaxing heat stress is provided at least along a boundary between a central area and one of outer annular areas or between the outer annular areas.
Honda Motor Co., Ltd.


Ion filter roof structure of fuel cell for vehicle


An ion filter roof structure of a fuel cell for a vehicle is provided and includes a controller that is connected to a heater, a pump, a 4-way valve, and a radiator disposed within a fuel cell for a vehicle. In addition, a thermal management system of the ion filter roof structure includes an ion filter and a fuel cell stack connected to the controller to form an ion filter roof.
Kia Motors Corporation


Apparatus and measuring impedance for fuel cell diagnosis


An apparatus for measuring impedance for fuel cell diagnosis may include: a current measurement unit configured to measure a current flowing to a load from a fuel cell stack; a voltage measurement unit configured to measure a voltage of the fuel cell stack; and a calculation unit configured to monitor a variation of the current measured through the current measurement unit, perform a frequency analysis operation at each sampling while sampling the current and voltage of the fuel cell stack, and calculate impedance based on the analyzed voltage and current of the fuel cell stack.. .
Hyundai Autron Co., Ltd.


Method for activating fuel cell stack without using electric load


A method for activating a fuel cell stack without using an electric load includes chemically adsorbing hydrogen into a catalyst of a cathode. Oxygen remaining in the stack is removed to seal and store the fuel cell stack while maintaining a negative pressure in the fuel cell stack.
Hyundai Motor Company


Activation apparatus of fuel cell stack for performing automatic activation and performance evaluation


An activation apparatus of a fuel cell stack includes an output cable connecting unit mounted on the frame and connecting a positive output cable of an electric load system to a positive output terminal at one side of the fuel cell stack. A fluid supply pipe connecting unit is mounted on the frame to reciprocate forward and backward with respect to another side of the fuel cell stack.
Hyundai Motor Company


Activation apparatus of fuel cell stack


An activation apparatus of fuel cell stacks, which automatically performs activation and performance evaluation processes on the fuel cell stacks when the fuel cell stacks have entered a frame, includes i) a connector connection assembly configured to connect a plurality of connector probes to cell terminals of the fuel cell stack, ii) an output cable connection assembly configured to connect positive (+) output cables to the first side of the fuel cell stack, and iii) a fluid supply pipe connection assembly configured to connect negative (−) output cables to the second side of the fuel cell stack and to connect a fluid supply pipe to the manifold of the fuel cell stack.. .
Hyundai Motor Company


Hybrid device and hybrid system


A hybrid device includes an electrolysis cell stack device, a fuel cell stack device comprising and a vaporizer. The electrolysis cell stack device includes an electrolysis cell stack including a plurality of electrolysis cells that generate a hydrogen-containing gas from a water vapor-containing gas.
Kyocera Corporation


Control method and system of fuel cell system


A control method and system of a fuel cell system is provided. The control method includes detecting, by a controller, a voltage of a fuel cell stack when power generation of a fuel cell is stopped while a fuel cell vehicle is being driven.
Hyundai Motor Company


Device and monitoring dryness of fuel cell stack


A device and a method for monitoring dryness of a fuel cell stack can accurately determine whether the fuel cell stack is dry or not, to ensure smooth operation and performance of the fuel cell stack during operation of a fuel cell vehicle. The device includes a voltage sensing unit that monitors voltage of the fuel cell stack in real time; a current sensing unit that monitors current of the fuel cell stack in real time; a counting unit that compares the monitored voltage with a standard current-voltage performance curve; and a stack dryness determining unit that determines that the fuel cell stack is dry when a count determined by the counting unit is a standard level or more..
Hyundai Motor Company


Apparatus and controlling hydrogen purging


An apparatus and method for controlling hydrogen purging are provided. The hydrogen purging control apparatus includes a purge valve that is disposed at an outlet on an anode side of a fuel cell stack and is configured to adjust an amount of emission of hydrogen containing impurities.
Hyundai Motor Company


Activation apparatus of fuel cell stack


An activation apparatus of a fuel cell stack is provided. The activation apparatus of a fuel cell stack which is provided to perform activation and evaluate performance of the fuel cell stack while the fuel cell stack enters a frame.
Hyundai Motor Company


Fuel cell assembly


A fuel cell assembly (10) is provided. The fuel cell assembly (10) includes a first endplate (12), a second endplate (14), a plurality of separator plates (16) provided between the first and second endplates (12) and (14), and a plurality of fuel cells (18) forming a fuel cell stack (20).
Temasek Polytechnic


Solid oxide fuel cell, production method therefor, fuel-cell stack, and solid oxide fuel battery


A solid oxide fuel cell, a method of producing the same, a fuel cell stack, and a solid oxide fuel battery. The fuel cell including a solid electrolyte layer, a cathode layer formed on one surface thereof and which contains at least sr, an anode layer which is formed on the other surface of the solid electrolyte layer, and an intermediate layer formed between the solid electrolyte layer and the cathode layer.
Ngk Spark Plug Co., Ltd.


Cell materials variation in sofc stacks to address thermal gradients in all planes


A solid oxide fuel cell having a plurality of planar layered fuel cell units, an electrically conductive flow separator plate disposed between each of the fuel cell units, and a cathode contact material element disposed between each cathode electrode of the fuel cell units and each electrically conductive flow separator plate. The cathodes of the individual fuel cell units are modified such that the operating temperatures of the cathodes are matched with the temperatures they experience based upon their locations in the fuel cell stack.
Versa Power Systems, Ltd.


Apparatus and controlling cooling pump of fuel cell system


A method and apparatus for controlling a cooling pump of a fuel cell system are provided that improve efficiency of the fuel cell system by variably adjusting idle rpm of a pump that cools down stacks within the fuel cell system, based on temperature and flowrate of coolant the apparatus includes a storage that is configured to store a table in which revolutions per minute (rpm) of the cooling pump corresponding to temperature are recorded and a temperature measurer that is configured to measure temperature of a coolant of fuel cell stacks. In addition, a controller operates a pump driver based on the stored table to adjust the rpm of the cooling pump to correspond to the measured temperature of the coolant.
Hyundai Motor Company


Apparatus and preventing moisture condensation


An apparatus for preventing moisture condensation includes a fuel cell stack and an enclosure in which the fuel cell stack is disposed. A heater and a temperature sensor are provided in the enclosure.
Hyundai Motor Company


Fuel cell system with waste heat recovery for production of high pressure steam


A fuel cell system for generating electrical power and high level heat comprising at least one high temperature fuel cell stack having an anode side and a cathode side and adapted to generate electrical power, and a gas oxidizer/high level heat recovery assembly comprising an oxidizer adapted to oxidize one or more of exhaust output from the at least one high temperature fuel cell stack and a gas derived from the exhaust, and to generate high level heat, and a high level heat recovery system adapted to recover the high level heat generated in the oxidizer.. .
Fuelcell Energy, Inc.


Apparatus for compensating for torque of fuel cell electric vehicle and method thereof


An apparatus for compensating for torque of a fuel cell electric vehicle includes: a storage configured to store a first look-up table in which pedal amount correction coefficients corresponding to degradation rates of a fuel cell stack are recorded and a second look-up table in which torques corresponding to pedal amounts are recorded; a degradation rate calculator configured to calculate a degradation rate based on a maximum voltage and an output voltage of the fuel cell stack; a correction coefficient searcher configured to search for a correction coefficient corresponding to the calculated degradation rate using the first look-up table; a pedal amount detector configured to detect a pedal amount indicating a degree to which an acceleration pedal is pressed; and a torque compensator configured to compensate for torque by compensating for the detected pedal amount based on the searched correction coefficient using the second look-up table.. .
Hyundai Motor Company


A segmented fuel cell-battery passive hybrid system


An apparatus for supplying electrical energy to a varying load is disclosed. The apparatus comprises fuel cells and energy storage devices.
Imperial Innovations Limited


Method and components for repairing a ceramic fuel cell stack assembly


There is disclosed a method and components for repairing a fuel cell stack. In particular, the method and components relate to repairing a high temperature fuel cell stack incorporating ceramic components.
Lg Fuel Cell Systems Inc.


Components and methods for manufacture and assembly of a fuel cell stack


A fuel cell stack which is amenable to simple manufacturing processes and is thermally and mechanically compliant. The fuel cell stack reduces the number of components by combing fuel cell tubes to form tube sub-assemblies, the tube sub-assemblies comprising end fittings connected to the fuel cell tubes, the end fittings provided with at least one or preferably a plurality of channels to provide equal distribution of fuel throughout the fuel cell tubes..
Lg Fuel Cell Systems Inc.


Fuel cell stack assembly


There is provided a fuel cell stack assembly being thermally and mechanically compliant. The fuel cell stack comprises fuel feed pipe and fuel outlet pipe, a plurality of bundles of fuel cell tube sub-assemblies, the bundles being separated by an expansion gap to prevent thermal and mechanical stresses propagating from one bundle to an adjacent bundle..
Lg Fuel Cell Systems Inc.


Manifold block assembly for fuel cell vehicles


A manifold block assembly for a fuel cell vehicle mounted on a fuel cell stack and supplying air and hydrogen to the stack, includes a manifold block in which a hydrogen discharge path connected to a hydrogen line formed in the stack, an air discharge path connected to an air line formed in the stack, and a watertight bulkhead are integrally formed with each other. The manifold block assembly further includes a hydrogen inflow pipe configured to be attached to the manifold block and connected to the hydrogen line formed in the stack.
Kia Motors Corporation


Improved fuel cell systems and methods


The present invention is concerned with improved fuel cell systems and methods. The present invention provides an intermediate-temperature solid oxide fuel cell (it-sofc) system comprising: (i) at least one fuel cell stack comprising at least one intermediate-temperature solid oxide 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; and (ii) a steam reformer for reforming a hydrocarbon fuel to a reformate, and having a reformer inlet for anode inlet gas, a reformer outlet for exhausting anode inlet gas, and a reformer heat exchanger; and defining: (a) an anode inlet gas fluid flow path from a fuel source to said steam reformer to said at least one fuel cell stack anode inlet; (b) an anode off-gas fluid flow path from said at least one fuel cell stack anode off-gas outlet to a fuel cell system exhaust; (c) a cathode inlet gas fluid flow path from an at least one oxidant inlet to said reformer heat exchanger to said at least one fuel cell stack cathode inlet; and (d) a cathode off-gas fluid flow path from said at least one fuel cell stack cathode off-gas outlet to said fuel cell system exhaust; wherein said reformer heat exchanger is a parallel-flow heat exchanger in fluid flow communication with (i) said at least one oxidant inlet and said at least one fuel cell stack cathode inlet, and (ii) said fuel source and said at least one fuel cell stack anode inlet, and is arranged for exchanging heat between said cathode inlet gas and said anode inlet gas..
Ceres Intellectual Property Company Limited


Fuel cell system and operation control the same


A controller updates a lower limit voltage threshold in accordance with the restoration of an fc voltage until the operation status is restored to a normal operation from an operation having low power generation efficiency, such as an intermittent operation and a warmup operation (step s1). The controller increases an fc current in accordance with the updated lower limit voltage threshold (steps s2 and s3) to thereby satisfy both the requirements of the restoration of the output voltage of the fuel cell stack and the improvement of the electric power responsiveness..

System for controlling low-temperature starting of fuel cell vehicle and the same


A system for controlling low-temperature starting of a fuel cell vehicle includes a high-pressure hydrogen flow control valve controlling a flow of hydrogen supplied to a fuel cell stack. A fuel cell controller is configured to change and control an opening rate of the high-pressure hydrogen flow control valve when an internal temperature of the fuel cell stack is a reference value or less.
Hyundai Motor Company


Air processing system of fuel cell vehicle mounted with integrated valve


An air processing system of a fuel cell vehicle mounted with an integrated valve includes: the integrated valve attached to an air inlet and an air outlet formed integrally with a fuel cell stack and adjusting amounts of air introduced into and discharged from the fuel cell stack. The integrated valve is positioned at the shortest distance from the fuel cell stack, such that an amount of remaining oxygen that is to be consumed at the time of stopping start of a fuel cell vehicle is minimized.
Hyundai Motor Company


Fuel cell system


A fuel cell system, includes: a fuel cell stack that is formed by stacking fuel cells for causing electrochemical reaction of a fuel gas and an oxidizing gas; a fuel gas supply system that is configured to supply the fuel gas to the fuel cell stack from a supply source of the fuel gas; a fuel gas recirculating system that is configured to resupply to the fuel cell stack the fuel gas discharged from the fuel cell stack; and a piping member is configured to connect a junction between the fuel gas supply system and the fuel gas recirculating system with the supply source, the piping member having a bent portion that is curved such that a supply direction of the fuel gas from the supply source is reverse to a flowing direction of the fuel gas toward the junction.. .
Toyota Jidosha Kabushiki Kaisha


Coolant purification


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.
Intelligent Energy Limited


Fuel cell separator, fuel cell current collector plate, fuel cell and fuel cell stack


A separator used in a fuel cell is provided, the separator including: a separator main body that includes a fluid flow region through which a reactive gas or a coolant flows, a through-hole through which the reactive gas or the coolant flows, and a connection portion which connects the fluid flow region and the through-hole; and a flow rectifying portion that is arranged by being adhered on the connection portion and that rectifies flow of the reactive gas or the coolant between the fluid flow region and the through-hole, where the flow rectifying portion includes a plurality of protruded portions and a coupling portion which is thinner than the protruded portions and which couples the protruded portions.. .

Fuel cell stack


The fuel cell stack formed by arranging a terminal on both ends of a cell stacked body in which a plurality of cells including a membrane electrode assembly and separators interposing the membrane electrode assembly therebetween is stacked, includes a rust preventive plate which is arranged between a metal separator and a positive electrode terminal on a high potential side of the cell stacked body, and includes a material more noble than that of the separator in the surface.. .

Fuel cell unit


A fuel cell unit has a structure that enables the maximum use of a cell monitor in the height direction (vertical direction), in order to achieve this, the fuel cell unit comprises a fuel cell stack (3) including a cell stack body in which unit cells are stacked; and a cell monitor (6) for monitoring a voltage of the unit cells, wherein the cell monitor (6) is arranged so as to be inclined relative to a vertical direction. The cell monitor is inclined by providing a part of the cell monitor in the vicinity of a heat-generating part in a fuel cell on an opposite side of the heat-generating part relative to a central part in the vertical direction of the cell monitor and providing a part of the cell monitor in an area other than the heat-generating part in the fuel cell on a heat-generating part side relative to the central part in the vertical direction of the cell monitor..
Toyota Jidosha Kabushiki Kaisha


Control method and system of fuel cell system


A control method and system of a fuel cell system are provided. The control method includes draining the voltage of a fuel cell stack by charging a high voltage battery.
Kia Motors Corporation


Exhaust air guide of a fuel cell stack in a motor vehicle


An exhaust air guide of a fuel cell stack is provided, in particular in a motor vehicle, with a cooling device which belongs to the functional environment of the fuel cell stack and is in the form of a cooler structure through which ambient air flows. At least some of the exhaust air of the fuel cell stack is guided into the cooler structure or behind the cooler structure, as viewed in the direction of flow of the ambient air through the cooler structure, to such an extent that, at the cooler structure, the exhaust air flow brings about an increase in the mass flow of the ambient air through the cooler structure in accordance with the jet pump principle or, at the cooler structure, the exhaust air flow, in accordance with the jet pump principle, brings about a pressure difference conveying at least a portion of the ambient air through the cooler structure..
Bayerische Motoren Werke Aktiengesellschaft


Fuel cell stack


A fuel cell stack 11 includes a cell laminate 21 composed of a plurality of stacked cells 20, and air is introduced from an anode end part 21a of the cell laminate 21. The cell laminate 21 has two end cells 24 installed adjacently to a cathode end part 21b side, thereby providing the cathode end part 21b with high thermal insulation properties..
Toyota Jidosha Kabushiki Kaisha


Catalyst layer with through-holes for fuel cells


The performance of solid polymer electrolyte fuel cell stacks can be improved by incorporating an appropriate set of through-holes in the catalyst layers, and particularly in the cathode catalyst layers. Intaglio methods suitable for manufacturing catalyst layers with through-holes are disclosed..
Daimler Ag


Method for diagnosing current sensor of fuel cell system


A method for diagnosing a current sensor of a fuel cell system includes calculating an estimated duty value of a hydrogen pressure control valve, corresponding to a sensing value of the current sensor, while operating the fuel cell system. The estimated duty value is compared with an actual duty value where the hydrogen pressure control valve is controlled during the operation of the fuel cell system, thereby calculating an error value between the estimated duty value and the actual duty value.
Hyundai Motor Company


Manifold device of fuel cell stack


A manifold device of a fuel cell stack is provided which prevents moisture condensed in gases supplied to the fuel cell stack from excessively flowing into specific cells of the stack by heating gases supplied into the stack using heat of the stack. The manifold device also prevents flooding that is caused by liquid generated in cells disposed away from a gas inlet by removing a flow rate difference of gases generated in respective cells based on distances from the gas inlet of the stack..
Hyundai Motor Company


Fuel cell system


When it is judged that a fuel cell stack is drying up, recovery control is performed. In recovery control, the cathode pressure control valve is controlled so that the cathode pressure becomes an increased cathode pressure, a discharge flow rate of air of a turbocompressor is set to an increased flow rate of air, and a bypass control valve is controlled so that a flow rate of air which is fed to the fuel cell stack is maintained at the requested flow rate of air.
Toyota Jidosha Kabushiki Kaisha


System and controlling temperature of fuel cell stack


A system and method for controlling a temperature of a fuel cell stack are provided. The method includes performing a pump off mode which turns off the cooling water pump or operates the cooling water pump while reducing the rotation speed of the cooling water pump to be less than the reference rotation speed, when a cooling water outlet temperature is equal to or less than a preset first temperature while a pump normal mode which adjusts a rotation speed of a cooling water pump to be equal to or greater than a preset reference rotation speed and varies rpm based on the cooling water outlet temperature is performed.
Hyundai Motor Company


Ceramic substrate for electrochemical element, manufacturing method therefore, fuel cell, and fuel cell stack


A ceramic substrate for an electrochemical element that includes a ceramic layer and a high-thermal-expansion-coefficient material layer that is laminated on the surface of the ceramic layer. The high-thermal-expansion-coefficient material layer has a higher coefficient of thermal expansion than the ceramic layer, and applies compressive stress to the ceramic layer..
Murata Manufacturing Co., Ltd.


Method to reduce pressure when injectors are stuck open under faulted conditions and remedial action to prevent walk-home incident


A method for controlling a fuel cell system, capable of quickly detecting the pressure rise caused by a faulted open anode injector, reducing pressure in the fuel cell stack when the fault occurs, and taking remedial action to allow continued operation of the fuel cell stack, and militate against a walk-home incident.. .
Gm Global Technology Operations Llc


Current collector for fuel cell, and fuel cell stack


In order to reduce corrosion of metal plates of a current collector which is comprised of the stacked metal plates made of different materials, a current collector for a fuel cell is provided, which includes a first metal plate that has a terminal portion and is conductive, and a second metal plate and a third metal plate that are metal plates having a higher corrosion resistance than the first metal plate and pinch the first metal plate therebetween. The current collector includes a first through-hole penetrating the first metal plate, the second metal plate, and the third metal plate, wherein fluid exists in at least either one of between the first metal plate and the second metal plate, and between the first metal plate and the third metal plate, and the first through-hole guides the fluid outside the current collector, and a first seal member blocking an end face of a perimeter of the current collector.
Toyota Jidosha Kabushiki Kaisha


Oxidation gas discharging structure


An oxidation gas discharging structure is applied to a fuel cell stack that includes an end plate arranged on an end of a fuel cell body. The oxidation gas inside the fuel cell body is discharged to the outside through a through hole extending through the end plate.

Flat plate type solid oxide fuel cell stack unit and flat plate type solid oxide fuel cell stack module


A flat plate type solid oxide fuel cell stack module is obtained by stacking a plurality of flat plate type solid oxide fuel cell stack units. Each of the cell stack unit comprises an anode plate, a cell unit and a cathode plate.

Current collector for fuel cell, fuel cell stack, fuel cell system, and manufacturing fuel cell system


In order to suppress an increase in electric resistance when retrieving electric power collected from a fuel cell stack, a current collector for a fuel cell is provided. The current collector includes a current collecting portion for collecting electric power generated by the fuel cell, and a terminal portion for outputting the power collected by the current collecting portion.

Fuel cell


A fuel cell is provided, which includes a fuel cell stack having a stacked structure in which a plurality of unit cells generating electric power are stacked, terminal plate that is joined to end of the fuel cell stack and collects the generated electric power, and insulating plate disposed outside the terminal plate. The terminal plate is provided with a first gas discharge manifold communicating with an in gas discharge manifold on a gas discharge side.

Fuel cell stack and manufacturing the same, fuel cell module, high-temperature water vapor electrolysis cell stack, and manufacturing the same


A fuel cell stack 101 includes a plurality of fuel cells 105 in which a fuel electrode 109, a solid oxide electrolyte 111, and an air electrode 113 are sequentially laminated, an interconnector 107 that electrically connects the fuel cells 105 which are adjacent to each other, and an interconnector connecting layer 108 that is interposed directly between the air electrode 113 and the interconnector 107. The interconnector connecting layer 108 is formed from a material, which is expressed by a composition formula of (la1-x-ysrxcay)zmno3-appmsio2-dppmmgo (provided that, 0<x≦0.4, 0<y≦0.4, 0.1≦x+y≦0.5, 0.95≦z<1, a: 10 to 300, d: 10 to 400), through firing..
Mitsubishi Hitachi Power Systems, Ltd.


Method and system for diagnosing fuel cell stack


A system and method for diagnosing a fuel cell stack are provided. The method includes determining, by a controller, a time at which diagnosing the fuel cell stack is required based on a plurality of factors and driving a motor adjusted to a first efficiency value for a predetermined first reference time period based on the diagnosis determination.
Hyundai Motor Company


Fuel cell stack


A first end plate that constitutes a fuel cell stack is provided with an oxidant gas supply manifold member that connects an oxidant gas inlet communication hole and a circular external pipe. The oxidant gas supply manifold member has a non-circular opening portion that communicates with the oxidant gas inlet communication hole and a circular opening portion that communicates with the circular external pipe.
Honda Motor Co., Ltd


Solid oxide fuel cell stack


Wherein a, b, c, and d are a positive real number that satisfies 0.1≦a≦0.8, 0.1≦b≦0.8, 0.05≦c≦0.2, and 0.2≦d≦0.5.. .

Solid oxide fuel cell stack


There is provided a solid oxide fuel cell stack including an interconnector that has excellent electrical conductivity, gas sealing property, and adhesion to a solid electrolyte. The solid oxide fuel cell stack includes a plurality of power generation elements, each of which including at least a fuel electrode, a solid electrolyte, and an air electrode stacked in that order; and an interconnector that electrically connects the air electrode in one of adjacent power generation elements in the plurality of the power generation elements to the fuel electrode in the other power generation element, the plurality of power generation elements being connected in series to each other, wherein an intermediate layer having a porosity of not more than 1% and an electrical conductivity of not less than 0.05 s/cm is provided between the interconnector and the fuel electrode in the other power generation element..
Toto Ltd.


Device and controlling cold start of fuel cell system


A device and a method for controlling a cold start of a fuel cell system are provided and are capable of increasing a fuel cell load to reduce a cold start time using a kinetic energy storage method for a rotor of a motor for driving a fuel cell system. The method improves cold start performance by performing self-heating of a fuel cell stack based on an increase in an output current amount of a fuel cell and by restricting a motor torque simultaneously with generating the motor torque while applying a current to a motor when a vehicle stops to consume an output current of the fuel cell..
Hyundai Motor Company


State diagnostic apparatus of fuel cell stack


An apparatus for diagnosing a state of a fuel cell stack is provided. The apparatus may diagnose the state of the fuel cell stack without including the dc-dc converter which boosts the dc voltage and the inverter which converts the boosted dc voltage into the ac voltage.
Hyundai Motor Company


Solid oxide fuel cell stack


A solid oxide fuel cell stack includes a support, a plurality of power generation elements provided on a surface of the support, the plurality of power generation elements connected in series, each including at least a fuel electrode, a solid electrolyte, and an air electrode stacked in that order, and an interconnector that electrically connects an air electrode in one of adjacent power generation elements to a fuel electrode in the other power generation element. A solid electrolyte in adjacent one power generation element is provided between a fuel electrode in the adjacent one power generation element and the fuel electrode in the adjacent other power generation element, and an insulating member is provided at a position that is on the solid electrolyte in the adjacent one power generation element and between the air electrode in the adjacent one power generation element and the solid electrolyte therein..
Toto Ltd.


Solid oxide fuel cell stack


A solid oxide fuel cell stack includes a support, a plurality of power generation elements connected in series, each including a fuel electrode, a solid electrolyte, and an air electrode stacked in that order on the support, and an interconnector electrically connecting an air electrode in one of the two adjacent power generation elements to a fuel electrode in the other power generation element. A solid electrolyte for one of the power generation elements is provided on the downside of the interconnector provided on the downside of the air electrode in the one power generation element so that the solid electrolyte is joined to the interconnector, and a solid electrolyte for the other power generation element is provided on the upper side of the interconnector provided on the upper side of the fuel electrode for the other power generation element so that the solid electrolyte is joined to the interconnector..
Toto Ltd.




Fuel Cell Stack topics:
  • Fuel Cell Stack
  • Fuel Cell System
  • Heat Exchanger
  • Electrolyte
  • Internal Combustion Engine
  • Condensation
  • Evaporative Heat Exchanger
  • Combustion
  • Evaporation


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