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7635532 |
Polymer electrolyte fuel cell
A decrease in voltage in a polymer electrolyte fuel cell comprising stack of unit cells caused by the temperature difference between the cells located at the ends and the other cells due to a...
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7629065 |
Fuel cell system with a first and second electrically conductive casing
In a fuel cell system, an electrically conductive first case unit and an electrically conductive second case unit are fixed by screws such that insulating members are interposed between the first...
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7629068 |
Aircraft having integrated electrochemical supply system
An aircraft includes a supply system with an electrochemical reactor for generating energy, hydrogen, oxygen and clear water from grey water, a hydrocarbon containing fuel and air, so that the up...
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7625649 |
Vapor feed fuel cells with a passive thermal-fluids management system
The invention provides a fuel cell system, such as a direct methanol fuel cell (DMFC) that uses passive approaches to thermal-fluids management. In accordance with one embodiment of the invention,...
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7625647 |
Fuel cell system with integrated thermal-to-electric generating devices
A set of fuel cell system heat exchangers that have been modified to incorporate thermal-to-electric devices is disclosed. These devices convert a portion of the thermal energy flowing through each...
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7618735 |
Fuel cell with triangular buffers
An oxygen-containing gas flow field for supplying an oxygen-containing gas from an oxygen-containing gas supply passage to an oxygen-containing gas discharge passage is formed on a first metal...
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7615299 |
Method and apparatus for thermal, mechanical, and electrical optimization of a solid-oxide fuel cell stack
A solid-oxide fuel cell stack assembly comprising a plurality of sub-stacks, preferably two sub-stacks each containing one-half the total number of fuel cells. Cathode air and fuel gas are passed...
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7615298 |
Thermally integrated fuel cell stack
A thermally integrated fuel cell system includes a stack zone, a burner zone and a low temperature zone. The fuel is combined with steam and passed sequentially through a primary reformer and a...
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7615297 |
Fuel cell
A fuel cell of the invention has a hydrogen permeable metal layer, which is formed on a plane of an electrolyte layer that has proton conductivity and includes a hydrogen permeable metal. The fuel...
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7611786 |
Polymer electrolyte fuel cell power generation system
A polymer electrolyte fuel cell power generation system is disclosed which comprises:
a fuel cell having a plurality of cells each having a polymer electrolyte membrane and an anode and...
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7611787 |
Colorant treated ion exchange resins, method of making, heat transfer systems and assemblies containing the same, and method of use
Disclosed is a colorant treated ion exchange resin comprising at least 15% of exchangeable groups comprising at least one of an ion, a Lewis acid, or a Lewis base resulting from a colorant having a...
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7611789 |
Energy storage system
A closed loop energy storage system configured with a hydrogen tank, an oxygen tank, a fuel cell stack and an electrolyzer. A heat exchanger freeze-dries the hydrogen and oxygen prior to their...
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7611788 |
Fuel cell stack
This fuel cell stack includes: a coolant-supplying penetration hole and a coolant-discharging penetration hole each communicating with a coolant passage and each penetrates unit fuel cells in a...
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7608352 |
Method for shutting down a fuel cell system using an air purge
A method for delaying an air purge of a fuel cell stack at system shut-down until the temperature of the stack is reduced below a predetermined temperature. The fuel cell stack includes an anode...
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7608198 |
Heat transfer compositions with high electrical resistance for fuel cell assemblies
The present invention relates generally to heat transfer compositions. More particularly, the present invention relates to heat transfer compositions with high electrical resistance for use in...
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7604885 |
Fuel cell system with partial heating of each individual fuel cell
A fuel cell system includes a fuel cell constructed by plural stacked cells, a circulation path through which a thermal medium is circulated into each cell, a heater for heating the thermal medium,...
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7601452 |
Nested bipolar plate for fuel cell and method
Between adjacent MEA's is a bipolar plate assembly having a first sub-plate with a flow channel which is open to the anode side of the one of the MEA's. A second sub-plate has a flow channel which...
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7601453 |
Fuel cell and fuel cell stack
A fuel cell includes an electrolyte electrode assembly and separators. The separator includes first through third plates which are stacked together. The first plate has a first protrusion section...
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7595124 |
Integrated fuel cell hybrid power plant with controlled oxidant flow for combustion of spent fuel
A hybrid power generation system for generating electrical power comprises a compressor for producing a compressed oxidant and a recuperator in flow communication with the compressor. The hybrid...
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7591647 |
Support structure
A support structure of the present invention includes a fixation member directly or indirectly heated, a supported object supported by the fixation member, and a sliding member provided on an outer...
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7592083 |
Integrated air supply with humidification control for fuel cell power systems
A fluid delivery device for an electrochemical conversion assembly. In one embodiment, the electrochemical conversion assembly is a fuel cell system. The device includes one or more...
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7592084 |
Aeroplane drink dispenser
A drink dispenser which is particularly suitable for use on board a passenger plane, comprises a drink preparation unit and a supply unit. The supply unit has a fuel cell system with a fuel cell...
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7588844 |
Method of starting up operation of fuel cell at low temperature
When it is detected that the temperature of the fuel cell stack is at the freezing temperature of water or less (step S 1 ), an operation mode using a freezing temperature starting up operation...
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7588849 |
Solid-oxide fuel cell system having tempering of fuel cell stacks by exhaust gas
In a solid-oxide fuel cell system, a fuel/air manifold conveys air and tail gas fuel from the anodes in a fuel cell stack assembly to a tail gas combustor, producing a heated combustor exhaust...
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7588845 |
Advanced control for an electrical heatable wax thermostat in the thermal coolant loop of fuel cell systems
A control algorithm for a by-pass valve in a thermal sub-system of a fuel cell system, where the by-pass valve includes a wax element that is heated by a heating element. A stack power loss is...
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7588855 |
Fuel cell assembly and fuel cell system
A fuel cell assembly ( 1 ) is disclosed. The fuel cell assembly ( 1 ) has a fuel cell stack ( 2 ) formed by laminating a plurality of cells; plus and minus current extraction sections ( 4 ), the...
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7585581 |
Micro fuel cell architecture
The present invention relates to fuel cells and components used within a fuel cell. Heat transfer appendages are described that improve fuel cell thermal management. Each heat transfer appendage is...
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7585355 |
Temperature/humidity exchanger
A temperature-humidity exchanger comprising: a moisture permeable membrane which transmits moisture therethrough; a dry gas separator in which low-temperature dry gas is caused to flow; and a wet...
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7579098 |
Fuel cells evaporative reactant gas cooling and operational freeze prevention
Fuel cells ( 38 ) have water passageways ( 67; 78, 85; 78 a, 85 a ) that provide water through reactant gas flow field plates ( 74, 81 ) to cool the fuel cell. The water passageways may be vented...
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7579099 |
Fuel cell having heat exchanger built in stack
A fuel cell having a heat exchanger that has a structure suitable for reducing space occupancy of the fuel cell. The fuel cell includes a stack where a chemical reaction for transforming chemical...
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7575822 |
Method of optimizing operating efficiency of fuel cells
A method of operating a fuel cell electrochemical system includes receiving at least one of a cost of electricity and a cost of fuel and adjusting at least one of an operating efficiency and...
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7572531 |
Fuel reformer system with improved water transfer
The present invention provides a hydrocarbon fuel reformer systems that improve the recovery and utilization of the water vapor and/or the heat energy within the reformer system. In a preferred...
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7569296 |
Method for operating vehicle-mounted fuel cell stack
For controlling operation of a vehicle-mounted fuel cell stack, a determination is made as to whether consumed electric power, measured during travel of a vehicle, is greater than standard electric...
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7563527 |
Fuel cell-atmospheric-pressure turbine hybrid system
A fuel cell-atmospheric-pressure turbine hybrid system uses the thermal energy of a cell exhaust gas discharged from an atmospheric-pressure, high-temperature fuel cell effectively, does not need...
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7563524 |
Fuel cell system
A fuel cell system is provided with a direct methanol fuel cell having an anode, a cathode and an electrolyte membrane put therebetween, a fuel supply unit supplying fuel to the anode, an air...
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7563529 |
Energy storage system
A closed loop energy storage system configured with a hydrogen tank, an oxygen tank, a fuel cell stack and an electrolyzer. A heat exchanger freeze-dries the hydrogen and oxygen prior to their...
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7563523 |
Fuel cell start-up method, fuel cell system and vehicle equipped with same
The invention relates to a fuel cell start-up method, said fuel cell comprising numerous cells which are supplied by a reformer ( 10 ). According to the invention, when the reformer is cold,...
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7560181 |
Fuel cell system and method of operating the same
A fuel cell system includes a first heating structure that increases an internal temperature of the stack by passing exhaust gas of the process burner through the stack; and a second heating...
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7556873 |
Fuel cell system
Coolant passages ( 11 a, 11 b ) are provided in unit cells ( 17 a, 17 b ) which form a laminate ( 170 ) of the unit cells ( 17 a, 17 b ). A coolant supply manifold ( 12 ) which distributes...
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7556874 |
Fuel cell temperature control by evaporative cooling
To evaporatively cool fuel cells, the pressure in steam carrying channels on one side of a hydrophobic porous liquid/vapor barrier layer disposed between adjacent fuel cells is reduced to below the...
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7556879 |
Polymer electrolyte fuel cell
A fuel cell includes a membrane electrode assembly 21 and a bipolar plate 24 disposed outside the membrane electrode assembly 21 . The bipolar plate 24 is porous, and has first gas passages ...
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7556875 |
Fuel cell power generation system including an off-gas heating heat exchanger used to heat anode stream off-gas containing hydrogen
A fuel cell power generation system includes a reforming catalyst body configured to generate a reformed gas containing hydrogen from a feed gas and water, a fuel cell configured to generate...
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7553572 |
Fuel cell device and fuel cell management system
A fuel cell device including a fuel cell stack unit, a fuel reform unit, a material feed unit, a cooling water supply unit, and a control unit further includes a memory section, constructed of a...
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7550218 |
Apparatus for producing water onboard of a craft driven by a power plant
Water is generated onboard of a craft such as an aircraft or in a self-contained stationary system by partially or completely integrating a water generating unit into a power plant of the craft or...
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7548683 |
Coolant conditioning system and method for a fuel processing subsystem
A coolant conditioning system is provided for supplying a coolant flow to a fuel processing subsystem. The coolant conditioning system includes a coolant preheater to transfer heat from a reformate...
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7547333 |
Fuel reforming system
In a fuel reforming system ( 32 ) of a fuel cell system ( 1 ), which includes a reformer ( 7 ) generating hydrogen-containing gas to be an electromotive fuel and a combustor ( 6 ) generating...
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7547482 |
Passive microcoolant loop for an electrochemical fuel cell
Improvements in freezing and sub-freezing startup time for an electrochemical fuel cell system may be observed by having a passive coolant microloop using two gear pump heads. During a cold start,...
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7537849 |
Solid-oxide fuel cell assembly having a convectively vented structural enclosure
In a solid-oxide fuel cell system, the fuel cell stacks, the fuel reformer, tail gas combuster, heat exchangers, and fuel/air manifold, are contained in a “hot zone” within a thermal enclosure....
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7537851 |
Fuel cell system including separator having cooling water flow channels
The present invention is a fuel cell system including a stack having an electricity generator, that includes separators disposed on both surfaces of a membrane-electrode assembly, a reformer that...
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7537850 |
Fuel cell device and related control method
A fuel cell device and related control method are disclosed wherein a water tank 5 is disposed downstream of a fuel cell stack 1 and a hot medium flow passage 25 is formed on an outer...
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