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Fuel Cell Stack patents



      
           
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Date/App# patent app List of recent Fuel Cell Stack-related patents
04/17/14
20140106254
 Fuel cell stack patent thumbnailnew patent Fuel cell stack
A unit cell of a fuel cell stack includes separators. Load receivers provided in the separators include projections, for example.
04/17/14
20140106247
 Energy load management system patent thumbnailnew patent Energy load management system
A system and method for controlling a fuel cell system. An anode tail gas oxidizer (ato) receives air and fuel exhaust streams from one or more fuel cell stacks of the fuel cell system.
04/10/14
20140099567
 Ceramic interconnect for fuel cell stacks patent thumbnailCeramic interconnect for fuel cell stacks
A fuel cell comprises a plurality of sub-cells, each sub-cell including a first electrode in fluid communication with a source of oxygen gas, a second electrode in fluid communication with a source of a fuel gas, and a solid electrolyte between the first electrode and the second electrode. The sub-cells are connected with each other with an interconnect.
04/10/14
20140099563
 Fuel cell stack having cooling medium leakage preventing unit patent thumbnailFuel cell stack having cooling medium leakage preventing unit
A fuel cell stack includes a plurality of unit cells, a cooling plate and a block plate. Each unit cell includes a cathode electrode and an anode electrode respectively at opposing sides of an electrolyte membrane, and a separator facing each of the cathode electrode and the anode electrode.
04/03/14
20140093805
 Solid oxide fuel cell stack with uniform flow distribution structure and metal sealing member patent thumbnailSolid oxide fuel cell stack with uniform flow distribution structure and metal sealing member
9. A fuel cell vehicle comprising the fuel cell system of claim 8..
04/03/14
20140093801
 Automated cold storage protection for a fuel cell system patent thumbnailAutomated cold storage protection for a fuel cell system
A system and method for selectively determining whether a freeze purge should be performed at shut-down of a fuel cell stack. The method includes identifying that the vehicle has been keyed off and then determining whether a stack membrane humidification value is less than a predetermined humidification value that identifies the humidification of membranes in fuel cells in the fuel cell stack.
04/03/14
20140093800
 Solid oxide fuel cell device patent thumbnailSolid oxide fuel cell device
The present invention is a solid oxide fuel cell 1 including a reforming section 94, disposed inside a fuel gas supply flow path 20 above a vaporizing section 86 to surround the upper portion of a fuel cell stack 14, for steam reforming raw fuel gas f introduced from a fuel gas introducing portion 90a using steam s produced in a vaporizing section; and a circulating flow path portion 156 disposed in a fuel gas supply flow path between the vaporizing section and the reforming section for circulating rising raw fuel gas introduced from a fuel gas introducing section into a fuel gas supply flow path and rising steam produced in the vaporizing section along the circumferential direction of the fuel gas supply flow path so as to form a flow supplying mixed raw fuel gas and steam uniformly over the entire circumference of the reforming section.. .
04/03/14
20140093798
 Flame stabilized mixer-eductor-oxidizer for high temperature fuel cells patent thumbnailFlame stabilized mixer-eductor-oxidizer for high temperature fuel cells
A mixer/eductor assembly for use with a fuel cell stack having an anode-side and a cathode-side, said mixer/eductor assembly mixing and at least partially combusting anode exhaust gas output from the anode-side and an oxidant supply gas, said mixer/eductor assembly comprising: a first area receiving and mixing a first portion of the anode exhaust gas and a first portion of the oxidant supply gas to form a first mixture, the first area being configured so as to initiate a combustion reaction in the first mixture; a second area coupled with the first area, the second area receiving and mixing a second portion of the anode exhaust gas and a second portion of the oxidant supply gas to form a second mixture, wherein: the first mixture has a predetermined oxidant to fuel ratio smaller than the oxidant to fuel ratio of the second mixture; and the first area provides an ignition source to promote continuous combustion of the second mixture in the second area.. .
03/27/14
20140087286
 Systems and methods for bypassing fuel cells patent thumbnailSystems and methods for bypassing fuel cells
Embodiment methods for bypassing a fuel cell in a fuel cell stack include identifying a fuel cell to bypass and connecting a conductive bypass to the fuel cell stack such that the bypass electrically connects a first interconnect in the fuel cell stack and a second interconnect in the fuel cell stack and electrically bypasses the identified fuel cell. Further embodiment methods include applying a conductive sealing material to the fuel cell stack such that the conductive sealing material seals a cathode inlet or outlet of the identified fuel cell and such that the conductive sealing material electrically bypasses the identified fuel cell..
03/27/14
20140087285
 Fuel cell system patent thumbnailFuel cell system
The fuel cell system of the present invention comprises: an electric motor, a fuel cell stack, a fuel supply unit, and a controller that controls a power-plant including the fuel cell stack and the fuel supply unit. The controller comprises further: a stack output-response request computing unit to compute a stack output-response request requested for the fuel cell stack; a stack voltage setup unit during idle-stop to set up a lower limit of stack setup-voltage during idle-stop that is set up as a stack voltage during execution of idle-stop so as to be higher as the stack output-response request is larger, and so as to be lower as the request is smaller; and an operation unit of recovering a stack voltage during idle-stop to execute a recovery operation when an actual stack voltage becomes, during execution of idle-stop, lower than the lower limit of stack setup-voltage during idle-stop..
03/27/14
20140087280
Fuel cell system
A fuel cell system includes a fuel cell module and a control device. The control device includes a partial oxidation reformer adjuster, a combustion starter, and a power generator.
03/27/14
20140087279
Fuel cell system
A fuel cell system includes a fuel cell stack, an oxygen-containing gas flow rate control device, a reformer, a raw fuel flow rate control device, and an exhaust gas flow rate control device. In the fuel cell system, the oxygen-containing gas flow rate control device includes a start-up oxygen-containing gas flow rate regulator valve for supplying an oxygen-containing gas to the reformer to perform partial oxidation reforming from start-up of fuel cells until the temperature of the fuel cell stack is raised to a predetermined temperature.
03/20/14
20140081497
System and method for controlling fuel cell system
Disclosed is a system and method for controlling a fuel cell system. More specifically, a fuel cell demand current is calculated based on a driver demand current calculated from a driver demand torque.
03/20/14
20140080029
Solid oxide fuel cell, fuel cell stack system, fuel cell module, and fuel cell system
A solid oxide fuel cell having an electric power generating element unit that is configured by sandwiching a solid electrolyte layer between a fuel electrode layer and an oxygen electrode layer with a pore that is present in the solid electrolyte layer and is covered with a sealing material. In addition, a pore that is present in an interconnector, which is electrically connected to the fuel electrode layer or the oxygen electrode layer, is covered with the sealing material.
03/20/14
20140080021
Fuel cell module
A fuel cell module includes a fuel cell stack, a partial oxidation reformer for reforming a mixed gas of a raw fuel and an oxygen-containing gas, an exhaust gas combustor for combusting a fuel exhaust gas and an oxygen-containing exhaust gas discharged from the fuel cell stack thereby to produce a combustion gas, and a heat exchanger for raising the temperature of the oxygen-containing gas by heat exchange with the combustion gas. The heat exchanger is provided on one side of the fuel cell stack, and the partial oxidation reformer and the exhaust gas combustor are provided on the other side of the fuel cell stack.
03/20/14
20140080018
Fuel cell system and method of controlling the fuel cell system
A fuel gas supply apparatus of a fuel cell system includes a pressure reducing valve, an interruption valve, and an injector in a hydrogen supply channel. A controller of the fuel cell system includes a drive cycle setting unit for setting the drive cycle of the injector based on a load of the fuel cell stack, and a water state determination unit for determining whether or not quantity of water content in the fuel cell is excessive by determining whether or not the quantity of water content is a predetermined quantity or more..
03/13/14
20140072895
Method for a fuel cell air system leakage diagnostic
A system and method for identifying leaks in a cathode sub-system of a fuel cell system. An air flow meter is provided up-stream of a compressor and monitors the air flowing into the compressor.
03/13/14
20140072893
Powering a fuel cell stack during standby
A system and method for limiting voltage cycling of a fuel cell stack during a stand-by mode by providing power from a battery to the stack while the stack is turned off. The method includes monitoring the voltage of each of the fuel cells in the fuel cell stack and determining an average cell voltage of the fuel cells in the fuel cell stack.
03/13/14
20140072889
Ammonia fueled sofc system
Systems and methods are provided in which ammonia is used as a fuel source for solid oxide fuel cell systems. In the various aspects a high temperature fuel cell stack exhaust stream is recycled through one or more separation or conversion devices to create a purified recycled fuel exhaust stream that is recycled back into the fuel inlet stream of the high temperature fuel cell stack.
03/13/14
20140072887
Oxidation of fuel cell electrode contaminants
A system for oxidizing contaminants on both the cathode and anode electrodes in a fuel cell stack by applying a suitable voltage potential across the electrodes that causes the oxidation. The system includes a battery and an electrical converter electrically coupled to the battery.
03/06/14
20140065509
Compressible fuel cell subgasket with integrated seal
Fuel cell subgaskets made of extrusion based, microcellular polymeric foam; fuel cell stacks comprising the provided subgaskets; methods of sealing between plates of a fuel cell stack using the provided subgaskets; and methods of manufacturing such subgaskets.. .
03/06/14
20140065508
Interconnect for fuel cell stack
Various embodiments include fuel cell interconnects having a fuel distribution portion having an inlet opening, a fuel collection portion having an outlet opening, and a primary fuel flow field containing channels, wherein the fuel distribution portion comprises at least one raised feature defining a fuel distribution flow path, and the fuel distribution flow path is not continuous with the channels in the primary fuel flow field. The at least one raised feature may include, for example, a network of ribs and/or dots.
03/06/14
20140065506
Module for a fuel cell stack
A fuel cell stack (10) having a plurality of modules (12) and each module (12) having an elongate hollow member (14). Each hollow member (14) has a first flat surface (16) and a second flat surface (18) arranged parallel to the first flat surface (16).
03/06/14
20140065505
Freeze-resistant fuel cell condensers
Cathode exhaust of an evaporatively cooled fuel cell stack (50) is condensed in a heat exchanger (12a, 23, 23a) having extended fins (14, 25a) or tubes (24, 24a) to prevent pooling of condensate, and/or having the entire exit surface of the condenser rendered hydrophilic with wicking (32) to conduct water away. The cathode exhaust flow paths may be vertical or horizontal, they may be partly or totally rendered hydrophilic, and if so, in liquid communication with hydrophilic end surfaces of the condenser, and the condensers (49) may be tilted away from a normal orientation with respect to earth's gravity..
03/06/14
20140065502
Fuel cell system activation method and fuel cell system
As an activation time power generation mode of a fuel cell system, a control device executes: a first step of determining whether or not hydrogen is present in an anode gas flow path; a second step of bringing a contactor to a connected state if hydrogen is detected in the first step as being present in the anode gas flow path; a third step of supplying air to a cathode through a cathode gas flow path after the second step has been executed; and a fourth step of, if a voltage of the fuel cell stack detected by a voltage detection device reaches a predetermined voltage, connecting an electrical load to the fuel cell stack, and performing electric power generation of the fuel cell stack while maintaining the voltage at or below the predetermined voltage.. .
03/06/14
20140065499
Ammonia or hydrazine injection into fuel cell systems
A fuel cell system includes a controller, a fuel cell stack, a fuel inlet conduit operatively connected to the fuel cell stack, the fuel inlet conduit adapted to receive fuel from a fuel supply, a recycling conduit operatively connecting the fuel cell stack to the fuel inlet conduit, the recycling conduit adapted to recycle a portion of a fuel exhaust stream from the fuel cell stack to the fuel inlet conduit, and an ammonia or hydrazine storage vessel operatively connected to the fuel inlet conduit via a valve coupled to the controller. The controller is configured to control the operation of the valve to provide ammonia or hydrazine from the ammonia or hydrazine storage vessel into the fuel inlet conduit upon detecting a change in the fuel from the fuel supply..
03/06/14
20140063874
High-frequency-link power-conversion system having direct double-frequency ripple current control and method of use
A direct double-frequency ripple current control in a two-stage high-frequency-link (hfl) based fuel cell converter that can achieve low-frequency ripple free input current without using large electrolytic capacitors is provided. To eliminate the double-frequency ripple current disturbance introduced by the single-phase inverter load, a proportional-resonant (pr) controller is developed to achieve an extra high control gain at designed resonant frequency.
03/06/14
20140060143
System for manufacturing membrane electrode assembly of fuel cell stack
Disclosed herein is a system for manufacturing a membrane electrode assembly of a fuel cell stack, in which the concept of automation is introduced to the entire process for manufacturing the membrane electrode assembly and, in particular, bonding and stamping processes for the membrane electrode assembly and a gas diffusion layer are integrated. According to the present invention, it may be possible to reduce the installation area of the system and reduce the production cycle type, thus facilitating mass production..
02/27/14
20140057198
Device and method for stacking fuel cell stack
Disclosed is a device and method for stacking a fuel cell stack, which enables automated accurate stacking of components constituting the fuel cell stack by using a phosphor coated thereon. Accordingly, when a membrane-electrode assembly (mea), a separation plate, etc.
02/27/14
20140057194
Proton exchange membrane fuel cell with stepped channel bipolar plate
A fuel cell stack includes a membrane electrode assembly and a bipolar plate. The bipolar plate has a corrugated portion defined by an adjacent pair of proximal and distal peak portions and a sidewall segment connecting the peak portions.
02/27/14
20140057193
Proton exchange membrane fuel cell with stepped channel bipolar plate
A fuel cell stack includes a membrane electrode assembly and a bipolar plate. The bipolar plate has a corrugated portion defined by an adjacent pair of proximal and distal peak portions and a sidewall segment connecting the peak portions.
02/27/14
20140057192
Fuel cell and fuel cell stack
A fuel cell and a fuel cell stack. A cathode (41) of a fuel cell (3) assumes the form of a square plate and is composed of a lower layer (61) on a side toward a solid oxide body (37), and an upper layer (63) which covers the outer surface of the lower layer (61).
02/27/14
20140057189
Fuel cell startup apparatus and method
Disclosed is a fuel cell startup apparatus and method, particularly, a fuel cell startup method, by which in an emergency situation such as when a high-voltage battery mounted on a fuel cell vehicle is completely discharged, fuel cell startup can be achieved without assistance of a high-voltage power source. To this end, an air supply port, which is connected to an emergency air supplier, is formed on an air supply line configured to supply air to a cathode of a fuel cell stack, and the emergency air supplier supplies the air to the fuel cell stack when complete discharge of a high-voltage battery and is removably engaged to the air supply port..
02/27/14
20140057188
Fuel cell system containing anode tail gas oxidizer and hybrid heat exchanger / reformer
A fuel cell system includes at least one fuel cell stack, a fuel inlet conduit, and a fuel heat exchanger containing a fuel reformation catalyst. The fuel heat exchanger is connected to the fuel inlet conduit and to at least one fuel cell system exhaust conduit which in operation provides a high temperature exhaust stream to the fuel heat exchanger.
02/27/14
20140057184
Systems and methods for suppressing chromium poisoning in fuel cells
A fuel cell assembly includes a fuel cell stack including a plurality of fuel cells, an incoming oxidizing gas flow path configured to deliver an oxidizing gas to the plurality of fuel cells, and a chromium-getter material located in the incoming oxidizing flow path. A fuel cell includes an electrolyte, a cathode electrode on a first side of the electrolyte, an anode electrode on a second side of the electrolyte, and a chromium-getter material on the cathode electrode..
02/27/14
20140056772
Hydrogen generator having reactant pellet with concentration gradient
A hydrogen generator is provided for generating hydrogen gas for a fuel cell stack. The hydrogen generator includes a container, and a liquid reactant storage area configured to contain a liquid including a first reactant.
02/20/14
20140051005
Fuel cell stack with improved end cell performance through a diffusion media having lower compressibility
A fuel cell stack that includes a gas diffusion media for the end cells in the stack that has less of an intrusion into the flow field channels of the end cells that the other cells, so as to increase the flow rate through the flow channels in the end cells relative to the flow rate through the flow channels in the other cells. A different diffusion media can be used in the end cells than the nominal cells, where the end cell diffusion media has less of a channel intrusion as a result of diffusion media characteristics.
02/20/14
20140051004
Fuel cell stack with improved end cell performance provided by higher modulus of elasticity
A fuel cell stack that includes a gas diffusion media for the end cells in the stack that has less of an intrusion into the flow field channels of the end cells that the other cells, so as to increase the flow rate through the flow channels in the end cells relative to the flow rate through the flow channels in the other cells. A different diffusion media can be used in the end cells than the nominal cells, where the end cell diffusion media has less of a channel intrusion as a result of diffusion media characteristics.
02/20/14
20140051000
Fuel cell system
A fuel cell system control device includes a carbon amount determination unit for determining the carbon amount in fuel gas supplied to a fuel cell stack depending on required output of the stack, a temperature detector unit for detecting temperature of a steam reformer and temperature of an evaporator, an s/c determination unit for determining a range of steam/carbon ratio based on the temperature of the steam reformer, a water supply amount determination unit for determining a range of the water supply amount to the evaporator based on the carbon amount and the steam/carbon ratio, an evaporator operating state determination unit for determining whether the temperature of the evaporator is a temperature determined based on the range of the water supply amount, and a reformer control unit for controlling the steam reformer and a partial oxidation reformer based on the result of the evaporator operating state determination unit.. .
02/20/14
20140050625
Hydrogen generator having liquid delivery member
A hydrogen generator is provided for generating hydrogen gas for a fuel cell stack. The hydrogen generator includes container, and a first reactant storage area configured to contain a liquid first reactant.
02/13/14
20140045101
Fuel cell module and fuel cell stack
A fuel cell stack and fuel cell modules that constitute such a fuel cell stack are provided, wherein adhesion of foreign materials to an electrolyte membrane of each fuel cell can be effectively prevented, and highly efficient maintenance is possible by replacing a fuel cell with degraded performance out of the fuel cell stack. A plurality of fuel cells 10 each having a membrane electrode assembly 1, gas-permeable layers 2,3,5,6 on the anode and cathode sides, sandwiching the membrane electrode assembly 1 therebetween, and a separator 7 on at least one of the anode and cathode sides are stacked.
02/13/14
20140045090
Fuel cell vehicle
An object is to supply a sufficient amount of air to a fuel cell stack in a fuel cell vehicle when the fuel cell stack is mounted below a floor, the fuel cell stack configured to draw in air through an intake duct and discharge air to the exterior through an exhaust duct. An air introduction surface (26) faces upward or downward in a vehicle upper and lower direction, an intake passage portion (30) of the intake duct (28) extends along the air introduction surface (26) and vertical walls (31, 32) of left and right end portions of the fuel cell stack (11) while a pair of air introduction ports (33, 34) opens in left and right end portions of the intake passage portion (30), and an exhaust passage portion (39) of the exhaust duct (29) extends along an air discharge surface (27) and vertical walls (40, 41) of front and rear end portions of the fuel cell stack (11) while a pair of air discharge ports (42, 43) opens in front and rear end portions of the exhaust passage portion (39)..
02/13/14
20140045086
Pre-activation method for fuel cell stack
Disclosed is a pre-activation method for a fuel cell stack, which can reduce the amount of hydrogen used and the processing time required during the regular activation process for the fuel cell stack. The disclosure provides, in part, a pre-activation method including: injecting water droplet-containing, humidified hydrogen into a cathode inlet manifold of a fuel cell stack assembled in an assembly process such that the water droplet-containing hydrogen is supplied to a cathode of the fuel cell stack; and sealing and storing the resulting fuel cell stack for a period of time to pre-activate the fuel cell stack..
02/13/14
20140045085
Fuel cell module
A fuel cell module includes a fuel cell stack, a partial oxidation reformer for reforming a mixed gas of a raw fuel and an oxygen-containing gas, a steam reformer for reforming a mixed gas of the raw fuel and water vapor, an evaporator for supplying water vapor to the steam reformer, a heat exchanger for raising the temperature of the oxygen-containing gas by heat exchange with a combustion gas, and an exhaust gas combustor for producing the combustion gas. A fuel gas discharge chamber of the steam reformer is connected to a fuel gas supply passage of the fuel cell stack through a fuel gas channel, a fuel gas outlet of the partial oxidation reformer is connected to a mixed gas supply chamber of the steam reformer through a fuel gas pipe, and a water vapor pipe extending from the evaporator is merged to the fuel gas pipe..
02/13/14
20140045084
Internal steam generation for fuel cell
A fuel cell system includes a fuel cell stack having an anode plate and a cathode plate arranged on opposing sides of a proton exchange membrane. Cooling channels are in thermal contact with at least one of the anode plate and the cathode plate and include an internal coolant passage.
02/06/14
20140038082
Connecting material for a tubular solid oxide fuel cell, and tubular solid oxide fuel cell stack including same
Disclosed is a connector for a solid oxide fuel cell, which electrically connects tubular solid oxide fuel cells to each other. The connector includes a conductive body part having a first electrode contact groove and a second electrode contact groove.
02/06/14
20140038073
Shutdown strategy to avoid carbon corrosion due to slow hydrogen/air intrusion rates
A fuel cell system including a fuel cell stack having a plurality of fuel cells, each of the fuel cells including an electrolyte membrane disposed between an anode and a cathode, an anode supply manifold in fluid communication with the anodes of the fuel cells, the anode supply manifold providing fluid communication between a source of hydrogen and the anodes, an anode exhaust manifold in fluid communication with the anodes of the fuel cells, and a fan in fluid communication with the anodes of the fuel cells, wherein the fan controls a flow of fluid through the anodes of the fuel cells after the fuel cell system is shutdown.. .
02/06/14
20140038072
Device and method for detecting coolant level in thermal management system for fuel cell vehicle
Disclosed are a device and method for detecting the coolant level in a thermal management system for a fuel cell vehicle, which can accurately and rapidly detect the lack of coolant using a detection value of a pressure sensor. That is, the present invention provides a device and method for detecting the coolant level in a thermal management system for a fuel cell vehicle, which can accurately and rapidly monitor the lack of coolant by calculating in real time the lack of coolant based on a change in slope value and a change in amplitude of a detection value of a pressure sensor according to the flow of coolant while the pressure sensor is mounted in a coolant line connected to an inlet of a fuel cell stack and a reservoir is connected to a pressure cap of a radiator..
02/06/14
20140038071
Fuel cell module
A fuel cell module includes an oxygen-containing gas regulator valve for distributing and supplying the oxygen-containing gas to the heat exchanger and to the start-up combustor, a raw fuel regulator valve for distributing and supplying the raw fuel to the reformer and to the start-up combustor, and a control device. The control device includes an oxygen-containing gas distribution controller for controlling the oxygen-containing gas regulator valve and a raw fuel distribution controller for controlling the raw fuel regulator valve, each control thereof being performed at least based on any of the temperature of the fuel cell stack, the temperature of the reformer, and the temperature of the evaporator..
02/06/14
20140038068
Method for recovering performance of fuel cell
Disclosed is a method for recovering performance of a fuel cell, which can recover the catalytic properties of a cathode in a reusable state by supplying hydrogen to the cathode of a degraded fuel cell stack for a predetermined period of time and storing the fuel cell stack for a predetermined period of time such that an oxide formed on the surface of platinum (pt) is removed and, at the same time, the platinum is re-precipitated.. .
02/06/14
20140033801
Diagnosing injector failure via stack voltage response analysis
A system and method for determining whether an anode injector that injects hydrogen gas into an anode side of a fuel cell stack has failed. The method includes monitoring a voltage of the fuel cell stack and performing spectral analysis of the stack voltage to identify amplitude peaks in the stack voltage.
01/30/14
20140030632
Process for surface conditioning of a plate or sheet of stainless steel and application of a layer onto the surface, interconnect plate made by the process and use of the interconnect plate in fuel cell stacks
A process for the conditioning of and applying a ceramic or other layer onto the surface of a sheet of stainless steel comprises the steps of (a) optionally annealing the steel plate or sheet in a protective gas atmosphere at an elevated temperature, (b) controlled etching of the surface of the sheet to produce a roughened surface and (c) depositing a protective and electrically conductive layer onto the roughened metallic surface. The process leads to coated metallic sheets with desirable properties, primarily to be used as interconnects in solid oxide fuel cells and solid oxide electrolysis cells..
01/30/14
20140030624
Process for fuel cell formation
An improved approach toward manufacture of a sealed fuel cell stack configuration including electrostatic deposition of materials onto substrate surfaces of the fuel cell stack.. .
01/30/14
20140030620
Fuel cell module
A fuel cell module includes a fuel cell stack formed by stacking a plurality of fuel cells for generating electricity by electrochemical reactions of a fuel gas and an oxygen-containing gas, a reformer for reforming a mixed gas of a raw fuel and water vapor, an evaporator for supplying water vapor to the reformer, a heat exchanger for raising the temperature of the oxygen-containing gas by heat exchange with a combustion gas, an exhaust gas combustor for producing the combustion gas, and a start-up combustor for producing the combustion gas. The exhaust gas combustor is provided integrally in the heat exchanger.
01/30/14
20140030619
Fuel cell system and operation method thereof
A fuel cell system includes a fuel processor; a fuel cell stack; a first water tank; a combustor; a water discharge passage connected to a water drain port formed in the first water tank to discharge the water from inside of the first water tank; a water filling detector configured to detect that at least one of the water drain port and the water discharge passage is filled with water; a water supply unit for supplying the water to the first water tank; and a controller configured to execute a water filling step of supplying the water to the first water, supply the combustible gas to the combustor via the first water tank and cause the combustor to combust the combustible gas, when the water filling detector detects that at least one of the water drain port and the water discharge passage is filled with water.. .
01/23/14
20140025320
Redundancy for improved stack health monitoring reliability
A health monitoring system for a fuel cell stack using current fuel cell architecture to enable the electronic control unit (ecu) to continue to monitor the health of the fuel cell stack despite a component failure. The system uses an embedded measurement module (emm) connected to a group of fuel cells in the fuel cell stack to monitor the health of that group of fuel cells.
01/23/14
20140020968
Fuel cell vehicle
An object of the present invention is to efficiently heat a vehicle cabin of a fuel cell vehicle by utilizing heat of air discharged from a fuel cell stack. In a fuel cell vehicle in which an exhaust duct configured to discharge air from a fuel cell stack is arranged below a floor, the exhaust duct includes: a lower surface wall facing at least a lower surface of the floor with a predetermined gap therebetween; and a pair of side walls extending from right and left side portions of the lower surface wall toward the lower surface of the floor, and the floor is configured to be heated by the air flowing in the exhaust duct..
01/16/14
20140017586
Fuel cell apparatus and driving method thereof, and complex cartridge for the same
A fuel cell apparatus includes: a fuel cell stack comprising a plurality of unit cells; a mixer storing a fuel mixture solution supplied to the fuel cell stack; a mixture solution sensor measuring a residual amount of the fuel mixture solution stored in the mixer; a mixture solution control pump capable of supplying the fuel mixture solution stored in a cartridge to the mixer or withdrawing the fuel mixture solution stored in the mixer to the cartridge in order to adjust a quantity of fuel mixture solution in the mixer; and a control unit receiving a residual measurement signal from the mixture solution sensor indicating both quantity and fuel concentration of the fuel mixture solution stored in the mixer, and driving the mixture solution control pump to effect the desired quantity and fuel concentration of the fuel mixture solution in the mixer.. .
01/16/14
20140017584
Module level redundancy for fuel cell systems
This disclosure relates to module level redundancy for fuel cell systems. A monitoring component monitors a set of operational parameters for a fuel cell group.
01/09/14
20140011109
Fuel cell system
A fuel cell system includes: a fuel cell stack in which end plates are respectively disposed at two ends of a unit-cell stack of unit cells in the stacking direction, and in which a fuel gas channel for conveying a fuel gas along surfaces of one of the end plates in a direction parallel to the surfaces of the one end plate is formed within the one end plate; an injector that is integrally provided in one of the surfaces of the one end plate and that injects the fuel gas into the fuel gas channel; and a relief valve that is integrally provided in the other of the surfaces of the one end plate and that prevents overpressure in the fuel gas channel. The relief valve is disposed at a position offset from an injection axis of the injector..
01/09/14
20140011105
Reverse flow relief valve for a fuel cell system
A method of shutting down operation of a fuel cell system is disclosed, comprising a fuel cell stack, the method comprising the sequential steps of: i) ceasing a supply of fuel to the fuel cell stack; ii) closing a shut-off valve on an exhaust line in fluid communication with a cathode system of the fuel cell system, the cathode system comprising a cathode fluid flow path passing through the fuel cell stack; iii) pressurizing the cathode system with an air compressor in fluid communication with a cathode air net port in the fuel cell stack; and iv) ejecting water from the cathode flow path.. .
01/02/14
20140004448
Methods of refurbishing components of a fuel cell stack
Methods for refurbishing components, such as interconnects of a fuel cell stack, include singulating the stack and removing the electrolyte, seals and oxide layer using non-mechanical methods. The various methods of may be used either singly or in combination..
01/02/14
20140004438
Fuel cell system and method of operating fuel cell system
A fuel cell system includes: a fuel cell stack, a hydrogen gas tank, a compressor, an oxidant gas supplying flow passage, an oxidant off-gas discharge flow passage, a diluter for diluting an anode off-gas with a cathode off-gas, a branched gas flow passage through which a branched gas is directed to the diluter, a back pressure valve for controlling a pressure of branched gas, an ocv determining unit, and an i-v characteristic decreasing unit for starting power generation of the fuel cell stack and decreasing an i-v characteristic of the single cell by decreasing a stoichiometric ratios. In a low temperature start-up, the back pressure valve decreases a pressure of the branched gas introduced into the diluter when the i-v characteristic of the single cell is decreased by the i-v characteristic decreasing unit.
01/02/14
20140001033
Hydrogen fuel assist device for an internal combustion engine and related methods
A hydrogen fuel system for an internal combustion engine comprises a water reservoir and a fuel cell formed from a plurality of fuel cell stacks in fluid communication with the water reservoir. Each fuel cell stack includes at least one gasket disposed between two components of the fuel cell stack, the gasket including: a through hole formed therein for passage of hydrogen or oxygen through the gasket; and a plurality of channels formed in the gasket adjacent the through hole, each of the plurality of channels extending from an edge of the through hole to an edge of the gasket, the channels being sized and shaped to allow passage of hydrogen or oxygen to or from the through hole to or from the edge of the gasket..
12/26/13
20130344410
System and method for operating fuel cell system
Disclosed is a system and method for operating a fuel cell system, which improves durability of a fuel cell stack by purging oxygen diffusing into an air electrode of the fuel cell stack while the fuel cell vehicle is parking. That is, the present invention provides a system and method for operating a fuel cell system, which prevents an interface between oxygen and hydrogen from forming at an anode by periodically supplying hydrogen to a cathode to purge oxygen when the oxygen concentration is greater than a predetermined level to prevent oxygen in the air from diffusing into the cathode while parking the fuel cell vehicle, thus preventing durability of a membrane electrode assembly of a fuel cell stack from deteriorating..
12/26/13
20130344407
Hydrogen generator and method of controlling reaction
A hydrogen generator is provided for generating hydrogen gas for a fuel cell stack. The hydrogen generator includes a reaction area and a reactant storage area for storing a reactant composition for reacting to generate hydrogen gas.
12/26/13
20130344406
Recirculating loop for a fuel cell
Recycling loop for a gas circuit of a fuel cell stack, forming a connecting line beginning at the outlet of one of the two anode or cathode circuits and terminating in one of the two supply circuits, either in the fuel gas supply channel, or in the oxidant gas supply channel, providing the recycling of the gas contained in the anode or cathode circuits of the fuel cell stack, and comprising a pump that provides the recycling of the gas contained in the anode or cathode circuits of the fuel cell stack, a multi-way valve dividing said recycling loop into a first section and a second section, said multi-way valve having a first stable usage position providing the continuity between the first and second sections of said recycling loop and having a second stable usage position simultaneously providing the interruption of said continuity between the first and second sections of said recycling loop and a bringing of said recycling loop into contact with the atmosphere carried out by manoeuvring said multi-way valve.. .
12/26/13
20130344405
Method of using a hybrid humidifier fuel cell
A method of using a hybrid humidifier fuel cell for ensuring adequate humidification of a reactant gas stream in a fuel cell stack, during both steady-state, as well as transient operation. The device provides for improved performance through the use a primary humidification and a secondary humidification..
12/26/13
20130344404
Hybrid humidifier fuel cell
A hybrid humidifier fuel cell for ensuring adequate humidification of a reactant gas stream in a fuel cell stack, during both steady-state, as well as transient operation. The device provides for improved performance through the use a primary humidification and a secondary humidification..
12/19/13
20130337364
Fuel cell arrangement with a fuel cell stack deformable during operation
The present invention relates to fuel cell arrangement having at least one fuel cell stack which has a first end plate, a second end plate and numerous fuel cells which each comprise an anode, a cathode and an electrolyte arranged between the anode and the cathode, wherein the fuel cells are arranged along a longitudinal axis of the fuel cell stack between the first and the second end plates, a supporting structure in which the fuel cell stack is arranged, wherein the first end plate of the fuel cell stack is, if appropriate, permanently connected to the supporting structure. The fuel cell arrangement according to the invention is characterized in that at least one bearing means which is different from the first end plate which is, if appropriate, permanently connected to the supporting structure is provided for absorbing transverse forces acting on the fuel cell stack in the transverse direction with respect to the longitudinal axis of the stack..
12/19/13
20130337358
Fuel cell
A fuel cell stack comprising a second metal separator set to have an external dimension larger than a first metal separator, wherein the second metal separator comprises, formed integrally, a first seal member in contact with the peripheral edge of a first electrolyte membrane/electrode structure, a second seal member in contact with the peripheral edge of the first metal separator, and a third seal member in contact with the peripheral edge of an adjoining fourth metal separator. Since the first seal member, the second seal member and the third seal member are integrally formed on one surface of the second separator or one surface of the first separator, a seal-forming step can be carried out at one effort, simply and economically.
12/19/13
20130337353
Fuel cell stacks
The patent relates to fuel cell systems and controlling fuel cell systems. One fuel cell system includes at least one fuel cell stack that includes multiple different serially arranged cells.


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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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