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7416801 |
Warming device for fuel cell system
A warming device for fuel cell system having a fuel battery and a secondary battery has a first heater, a second heater and a control device. The first heater heats the secondary battery. The...
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7416798 |
Apparatus and methods for generating water in a fuel cell system
Apparatus and methods for the generation of water in a direct oxidation fuel cell. Water, in addition to carbon dioxide and heat, is produced when carbonaceous fuel or fuel solution is oxidized in...
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7413823 |
Method for monitoring the discharge of media out of fuel cell, and a fuel cell system
A defective operation of a valve ( 15, 35, 37, 39 ) in a drainage line ( 13, 21, 31, 33 ) of a fuel cell results in unintentionally permitting process gas to flow into the surrounding area of the...
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7413822 |
Device and method to release the overpressure of a fuel cell coolant tank
A device and method to convert residual hydrogen present in a fuel cell cooling system into water. An oxygen-bearing fluid is supplied to the cooling system from a source that also has elevated...
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7413821 |
Solid polymer electrolyte fuel cell assembly with gas passages in serial communication, and method of supplying reaction gas in fuel cell
A cell assembly includes a first unit cell and a second unit cell which are stacked to each other. The first unit cell has a first unified body, and the second unit cell has a second unified body....
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7410712 |
Procedure for starting up a fuel cell system using a fuel purge
A procedure for starting up a fuel cell system that is disconnected from its primary load and has both its cathode and anode flow fields filled with air includes initiating a flow of air through...
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7410711 |
Fuel cell output characteristic estimation apparatus and output characteristic estimation method, fuel cell system and vehicle having the same, and fuel cell output control method and data storage medium
An output characteristic of a fuel cell is estimated by detecting an output current of the fuel cell and a voltage between terminals of the fuel cell, and then estimating the output characteristic...
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7410710 |
Firstout shutdown tracing for fuel processor control system
A method and apparatus for determining which condition in a fuel processor has initiated a shutdown of the fuel processor are disclosed. In general, the apparatus generates a plurality of shutdown...
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7407721 |
Direct oxidation fuel cell operating with direct feed of concentrated fuel under passive water management
A passive direct oxidation fuel cell system, which uses a high concentration fuel such as neat methanol as a direct feed to an anode aspect of the fuel cell, is provided. The fuel cell includes a...
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7405013 |
Thermoelectric conversion of heat released during use of a power-plant or hydrogen storage material
A method of generating electrical current in a system comprising a power-plant unit and/or hydrogen storage medium by transferring heat generated by the hydrogen storage medium and/or power-plant...
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7405012 |
Oscillating gas flow in fuel cells
A method of operating a fuel cell includes supplying a gas stream to the fuel cell and oscillating the gas stream.
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7402355 |
Cooling method for fuel cell
A cooling method for a fuel cell using a heat exchanger is provided. The method comprises the steps of: providing an ion exchanger in a circulation system for the cooling fluid; decreasing ion...
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7402353 |
Transient controls to improve fuel cell performance and stack durability
The present invention is a method of operating a fuel cell stack and system that minimizes the potential for having a large pressure differential between the anode and cathode flow fields and a low...
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7402352 |
Fuel cell system and related startup method
A fuel cell system (FS) is provided with a fuel cell ( 1 ) having a fuel electrode ( 1 c ) and an oxidizer electrode ( 1 a ), disposed in opposition thereto, between which an electrolyte membrane (...
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7402351 |
Carboxylic acid-based ionomer fuel cells
Conductivity of carboxylic acid membranes can be increased for use in fuel cells when the membrane comprises a Lewis base, which has, in its protonated form, a pKa greater than the pKa of the...
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7399544 |
Device for recuperating water in a power production unit comprising a fuel cell
A power production unit onboard a motor vehicle, including a fuel cell including at least one orifice for evacuating off-gases, in particular of air and water vapor, which are discharged into a...
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7399541 |
Fuel cell system, mobile unit equipped with the system, and control method for the fuel cell system
A fuel cell system FC replenishes a fuel cell stack with air or hydrogen by temporarily driving a compressor or a low-pressure valve even during an intermittent operation mode. If air is supplied...
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7396604 |
Centrifugal compressor surge detection using a bi-directional MFM in a fuel cell system
A fuel cell system including a turbomachine compressor that delivers charge air to the cathode side of a fuel cell module. A bi-directional mass flow meter measures the airflow through the...
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7396602 |
Electrochemical generator and method for its utilisation
An electrochemical generator consisting of an alternation of membrane fuel cells and cooling cells with internal circulation of liquid water is described. The fuel cells are fed in at least one of...
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7396601 |
Flow control for multiple stacks
A fuel cell comprises an electrode plate having a flow field formed therein and a proton exchange membrane. A compressible permeable diffusion media is disposed adjacent the electrode plate. The...
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7395854 |
Systems and methods for controlling cooling fluid temperature in a fuel cell engine
Systems and methods for a temperature control loop in a vehicular engine compartment to concurrently cool at least two devices with a single fluid supply source when each device requires the...
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7393603 |
Methods for fuel cell system optimization
A method of operating a fuel cell system which includes operating a fuel cell system at one or more operational modes, wherein said fuel cell system is configured to operate at a plurality of...
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7393602 |
Method to begin coolant circulation to prevent MEA overheating during cold start
A system and method for determining the internal temperature of a fuel cell stack during stack start-up so as to start a cooling fluid flow before the internal temperature of the stack rises above...
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7390585 |
Fuel cell system
A fuel cell system is provided with a humidifying device ( 27, 28 ) for humidifying at least one of fuel gas and oxygen-bearing gas, a water passage ( 11 ) through which water from a water tank ( 5...
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7387849 |
Hydrogen recycle for solid oxide fuel cell
The present disclosure relates to solid oxide fuel cells (SOFCs) exploiting gas separation devices in which a first gas mixture including components A (for example hydrogen) and B (for example...
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7381491 |
Maximizing PEM fuel cell power plant system efficiency at optimum system pressure
A PEM fuel cell power plant system ( 10 ) has a process air pump ( 26 ), which may be a fan, a blower or a compressor, with an adiabatic efficiency of between 40% and 70%. The process air at the...
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7381487 |
In-situ removal of electrolyte from gas oxidizer
A method and apparatus for use with an oxidizer assembly of a fuel cell system in which the oxidizer assembly has an oxidizing unit for oxidizing anode exhaust gas containing electrolyte...
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7381486 |
Fuel cell system
Disclosed is a fuel cell system provided with a fuel cell ( 1 ), a water tank ( 2 ) which stores water to be supplied to the fuel cell, and a heating device ( 10 ) which defrosts the water inside...
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7378170 |
Electric motive power system for a motor vehicle, and method for using a fuel-cell
An electric motive power system for a motor vehicle including a fuel cell having at least one set of two electrodes each provided with an electrode input and output, an electrolytic membrane being...
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7378165 |
System and method for providing electrical power to an equipment rack using a fuel cell
A system and method for providing electrical power to an equipment rack using a fuel cell is disclosed. The system discloses: an equipment rack; an electrical device located within the rack; a fuel...
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7374836 |
Fuel cell apparatus
A fuel cell apparatus includes an electric power generation unit with a plurality of membrane electrode assemblies each having an oxidizer electrode to which an oxidizer is fed and a fuel electrode...
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7374834 |
Gas flow panels integrated with solid oxide fuel cell stacks
A generally planar, rectangular solid oxide fuel cell stack having a plurality of fuel cell units, each of the fuel cell units having an anode, a cathode and an electrolyte disposed there between,...
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7368193 |
Temperature-based vehicle wakeup strategy to initiate fuel cell freeze protection
A method of removing moisture from a fuel cell stack. The presence of liquid water in a fuel cell stack is especially undesirable should the temperature drop below freezing since the structures...
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7368191 |
Electrode array for use in electrochemical cells
The invention features an electrode array ( 7 ) in which pairs of electrodes ( 1 ) are geometrically arranged so that the broadest faces of the exposed electrodes are not directly opposing to each...
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7361423 |
Fuel cell system and method for discharging reaction gas from fuel cell
A fuel cell system includes: a fuel cell which generates electrical power from a chemical reaction of a reaction gas; a discharge path for discharging the reaction gas supplied to the fuel cell; a...
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7357015 |
Gas concentration sensor, hydrogen purification unit using this and fuel cell system
In order to provide a step capable of reliably detecting a CO concentration in a reformed gas at low cost and a hydrogen purifier capable of fully exerting a function of a CO purifying catalyst, a...
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7354671 |
Fuel cell system having secondary cell
This invention provides a power supply system for supplying electrical power to a load. The system includes: a first and a second power supply wirings for a connection to the load; a fuel cell...
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7354670 |
Fuel cell with fuel gas adjustment mechanism
A fuel cell includes cell assemblies connected to each other by a fuel gas connection passage, an oxygen-containing gas connection passage, and a coolant connection passage. A fuel gas adjusting...
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7354669 |
Operation method and purging system for a hydrogen demand/delivery unit in a fuel cell system
The invention pertains to a process for preventing the freezing of water in a structural component containing at least one moving part in the anode cycle of a fuel cell system, characterized by the...
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7354668 |
Operation state determining apparatus and method for fuel cell
An operation state determining apparatus for determining an operation state of a fuel cell battery formed by stacking a plurality of unit cells each having a construction in which a wet-state solid...
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7349215 |
Aerogel/PTFE composite insulating material
A material comprising aerogel particles and a polytetrafluoroethylene (PTFE) binder is formed having a thermal conductivity of less than or equal to 25 mW/m K at atmospheric conditions. The...
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7348082 |
Recursive Kalman filter for feedback flow control in PEM fuel cell
A method and apparatus of operating a compressor of a fuel cell system includes modeling a flow meter that measures a mass flow from a compressor with a first mathematical formula and generating a...
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7344795 |
Fuel cell system and method of discontinuing same
A fuel cell system has a fuel cell, a gas supply device and an electronic control unit. The gas supply device supplies a scavenging gas to the fuel cell. The electronic control unit controls...
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7344788 |
Starting a fuel cell system using ambient air and a low voltage blower
A mechanization of a fuel cell system and a method of operating the same is provided which simplifies the start-up of the fuel cell system. The fuel cell system can be started up without using any...
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7342793 |
Aerogel/PTFE composite insulating material
A material comprising aerogel particles and a polytetrafluoroethylene (PTFE) binder is formed having a thermal conductivity of less than or equal to 25 mW/m K at atmospheric conditions. The...
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7338727 |
Method of operating a fuel cell to provide a heated and humidified oxidant
A method and apparatus are provided for humidifying fuel, and optionally oxidant, supplied to a fuel cell system, which can be a single fuel cell or a multiplicity of fuel cells. A catalytic...
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7335433 |
Vehicle with energy converter
A vehicle with a device ( 6 ) for converting chemical energy into electrical and/or mechanical energy, in particular a fuel cell unit ( 6 ) and/or combustion device ( 6 ), such as a diesel or gas...
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7335430 |
Fuel cell system
A fuel cell system having a fuel cell consuming the hydrogen stored in the high-pressure hydrogen tank as fuel gas, a hydrogen supply line connecting the high-pressure hydrogen tank to the fuel...
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7332236 |
Method and apparatus for controlling a combined heat and power fuel cell system
A cogeneration fuel cell system and associated methods of operation are provided that accommodate a demand for heat as well as a demand for electric power. The system is operated among various...
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RE40060 |
Fuel cell system
A fuel cell system comprises a fuel cell unit and facility for humidifying process gases to provide a fuel for the fuel cell unit, wherein water-carrying media conduits of the fuel cell unit are...
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