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7618729 |
Liquid fuel direct supply fuel cell system and its operation controlling method and controller
A liquid fuel direct supply fuel cell system capable of being operated under optimal conditions. A plurality of cells each having an anode and a positive electrode disposed oppositely through an...
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7618727 |
Fuel cell unit, control method for fuel cell unit, and information processing apparatus
In a fuel cell unit, a control method therefor, and an information processing apparatus, a determination is made as to whether or not elapsed time from the last power generation until the present...
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7618726 |
Fuel cell system and protection method thereof
A system has two modes which protect it from freezing of water while a fuel cell stack has stopped. An effective protection mode from the viewpoint of energy consumption is selected based on the...
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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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7615294 |
Methods of removing contaminants from a fuel cell electrode
A method of optimizing a waveform of an electrical current applied to an electrode of an elecetrochemical device that includes at least two electrodes separated by an electrolyte, includes the...
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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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7608351 |
System and method for controlling cathode stoichiometry to minimize RH excursions during transients
A system and method for providing dynamic cathode stoichiometry control in a fuel cell during stack load transients to minimize relative humidity excursions. Particularly, changes in the cathode...
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7601207 |
Gas recovery system
A gas recovery system is disclosed. The gas recovery system includes a gas source productive of a gaseous stream comprising moisture, a gas dryer in fluid communication with and downstream of the...
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7599760 |
Online configurable control system for fuel cells
A fuel cell system control system includes a fuel cell system and a controller. The controller includes a display and a processor configured to execute a program for managing an operation of a fuel...
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7597977 |
Diagnostic method for fuel cell
In a diagnostic method for a fuel cell, the amount of cross leak is determined by supplying the anode of the fuel cell with a hydrogen or hydrogen-containing gas, and supplying the cathode with an...
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7597975 |
Fuel cell operation to minimize RH cycles to improve durability
A fuel cell system that includes an over-arching algorithm for providing a strategy that reduces relative humidity cycling of the cathode outlet gas between wet and dry operation to extend the...
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7597974 |
Fuel cell system
The fuel cell system is equipped with a fuel cell for generating power by a reaction of fuel and oxidizer gases, a fuel gas flow passage for passing the fuel gas, an oxidizer gas flow passage for...
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7595123 |
Fuel cell system
Electric power is generated by pressurizing an internal pressure of a first fuel tank (C) or a second fuel tank (C 2 ) by pressurized air of an air pump (AP) for supplying air to an air electrode (...
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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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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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7585580 |
Direct reacting anolyte-catholyte fuel cell for hybrid energy sources
A fuel cell and a method for using the fuel cell to make electricity, in which the fuel cell has an anode half-cell having an electrocatalytic anode and a liquid anolyte that is substantially...
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7582979 |
Electric power supply system
Vehicles are connected to respective receptacles of houses and are capable of generating commercial AC power to supply the generated electric power to a power transmission line. The vehicles...
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7582377 |
Fuel cell and method of assembling the same
A pressure loss in an oxidative gas passage of each of single cells is obtained This pressure loss is compared with predetermined ranks so as to carry out classification according to the ranks. The...
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7582370 |
Fuel cell system
A fuel cell system includes a fuel cell stack comprising an anode (fuel electrode) and a cathode (oxidizer electrode), and a system startup run is conducted at the system startup to bring the fuel...
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7579096 |
Fuel reservoir for fuel cell
The fuel reservoir for a fuel cell is a fuel reservoir detachably connected with a fuel cell main body, and it is equipped with a fuel-storing vessel of a tube type for storing a liquid fuel and a...
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7575825 |
Power supply system and control method of the same
A power supply unit operation is switched depending on a load requirement. Namely, when the load requirement is smaller than a predetermined value, operation of a fuel cell system is stopped and...
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7575824 |
Method of improving fuel cell performance by removing at least one metal oxide contaminant from a fuel cell electrode
A method of removing contaminants from a fuel cell catalyst electrode. The method includes providing a getter electrode and a fuel cell catalyst electrode having at least one contaminant to a bath...
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7575823 |
Fuel cell system, fuel cell system drive method and fuel container for power generation
A fuel cell system having a fuel cell which performs a power generation operation with fuel for power generation of a fuel container; a water supply control section which extracts water from the...
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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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7572529 |
Method and system for starting up fuel cell stack at subzero temperatures, and method of designing fuel cell stack
A method of starting up at a subzero temperature a solid polymer electrolyte fuel cell stack that is formed by stacking a plurality of layers of separators and membrane electrode assemblies having...
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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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7569293 |
Methods and systems for efficient operation of integrated fuel cell-fuel reformer systems
Methods and related systems for determining an efficient operating state for an integrated fuel cell/fuel reformer power system have been developed. Such a method forms the basis of a control...
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7569292 |
Solid oxide fuel cell
The present invention provides an electrolyte membrane of a solid oxide fuel cell that excels in output performance. There is provided a solid oxide fuel cell comprising a single cell having 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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7563525 |
Electric reaction technology for fuels processing
A method and apparatus for producing hydrogen is disclosed wherein a hydrocarbon gas is fed into an electric reaction technology system to decompose the hydrocarbon gas to hydrogen gas and carbon...
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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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7560188 |
Nickel-metal hydride rechargeable battery
In a nickel-metal hydride rechargeable battery comprising a positive electrode of nickel hydroxide and a negative electrode of hydrogen-absorption alloy, prolonged battery life is achieved by...
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7560183 |
Control of RH conditions in electrochemical conversion assembly
A system and method for controlling an electrochemical conversion assembly are provided. The system is configured such that operation of one or both of the second reactant supply and the...
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7560182 |
Reaction gas supply apparatus and method for fuel cell
A reaction gas supply apparatus for a fuel cell is able to adapt to various kinds of operating states, and can provide improved responsiveness with respect to a required output. The apparatus has:...
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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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7560179 |
Fuel cell apparatus and method for controlling fuel
The present invention relates to a fuel cell. The fuel cell includes an electricity generator which has an oxygen electrode, a fuel electrode, and a solid polymer type electrolyte membrane disposed...
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7557532 |
Voltage supplying apparatus using a fuel cell
A voltage supplying apparatus using fuel cell to be a voltage source is provided. The voltage supplying apparatus comprises a fuel cell, a DC-DC voltage converter and a control circuit. The DC-DC...
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7556880 |
Compositional and structural gradients for fuel cell electrode materials
A fuel cell includes at least one electrode operatively disposed in the fuel cell, and having a catalytically active surface. The present invention further includes a mechanism for maintaining a...
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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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7553575 |
Fuel cell humidification system and method
One end of an air passage ( 32 ) facing a cathode ( 33 B) of a fuel cell ( 36 ) forming a fuel cell stack ( 6 ) is connected to a first manifold ( 1 A), and the other end is connected to a second...
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7553569 |
Dynamic cathode gas control for a fuel cell system
A fuel cell system utilizes at least one flow restricting device to vary the stoichiometric quantity of cathode reactant flowing to two discrete cathode sides of the fuel cell system. The varying...
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7553568 |
High efficiency load-following solid oxide fuel cell systems
Enhanced high temperature fuel cell systems, such as solid oxide fuel cell systems and molten carbonate fuel cell systems are disclosed. Embodiments of the disclosure include solid oxide and molten...
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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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7550214 |
Fuel cell system and fuel cell operating method
A fuel cell system and related method are disclosed having a catalytic combustor 7 combusting mixed gas between fuel gas, or anode off-gas, and oxidant gas or cathode off-gas, and a system...
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7544430 |
Online detection of stack crossover rate for adaptive hydrogen bleed strategy
A system and method for determining when to provide an anode exhaust gas bleed from a fuel cell stack as the fuel cell stack ages. The method determines the amount of nitrogen flowing from a...
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7537848 |
Method for model based exhaust mixing control in a fuel cell application
A system and method for controlling a bleed valve and a compressor in a fuel cell system during an anode exhaust gas bleed so as to maintain the concentration of hydrogen within a mixed cathode...
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7537847 |
Fuel cell system and method for operating same
A fuel cell system of the present invention comprises a fuel cell which is supplied with a fuel gas and an oxidizing gas to generate electricity, a fuel gas supply interrupting device for...
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7534511 |
Thermal control of fuel cell for improved cold start
Improvements in startup time for an electrochemical fuel cell system from freezing and sub-freezing temperatures are obtained by utilizing an insulated fuel cell stack in combination with an...
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7534510 |
Fuel compositions
Fuel compositions, methods of making the compositions, and fuel cell systems including a fuel composition are disclosed. In some embodiments, a fuel composition includes a polymer, and a fuel such...
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7532987 |
Fuel-cell power generation system and control method therefor
A fuel-cell power generation system includes a fuel-cell power generator, a power measurement section for measuring an actual power-consumption value in a household appliance, and a...
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