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Class 429/23 - Electrical output dependent


Subclass of Class 429 - Chemistry: electrical current producing apparatus, product, and process
Definition: Apparatus wherein the control is responsive to the electrical
No. of patents: 425
Last issue date: 02/01/2011


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NumberTitleIssue Date
7879473Fuel cell unit, control method thereof, information processing apparatus, and power supply control method thereof
A fuel cell unit according to the present invention is connectable to an external apparatus and includes a fuel cell generating an electric power, an auxiliary device feeding a fuel and air to the fuel cell, and a controller controlling power generation performed us...
02/01/2011
7811691Fuel cell system
To provide a small-sized fuel cell system capable of providing a mode having a simple constitution preventing power generation of a fuel cell in an overload state, preventing a deterioration in the fuel cell system and providing a stable output from the fuel cell in...
10/12/2010
7807280Control device for starting fuel cell vehicle
A control device for starting a fuel cell is provided which is capable of preventing an excessive reduction of the terminal voltage of the fuel cell. A primary precharge portion, provided with a high voltage switch and a current limiter, is disposed at the output po...
10/05/2010
7771856Energy output device and control method of energy output device
In a power supply device including a fuel cell unit with a stack of fuel cells or a fuel cell stack and a secondary battery, an intermittent drive mode is selected under a preset condition to receive power supply only from the secondary battery. The control procedur...
08/10/2010
7754362Fuel cell system
A fuel cell system includes a stack for generating electrical energy through electro-chemical reaction between a fuel and oxygen and supplying the electrical energy to a load, a fuel supply unit for supplying the fuel to the stack, an oxygen supply unit for supplyin...
07/13/2010
7754363Method and apparatus for inspecting direct liquid fuel cell generator, and direct liquid fuel cell generator
The invention provides a method for inspecting a fuel cell that can simply inspect fuel cell characteristics. The method is an inspecting method for a direct methanol fuel cell generator comprising an anode electrode including an node catalyst layer, a cathod...
07/13/2010
7722972Apparatus and method for controlling a fuel cell using the rate of voltage recovery
An apparatus and method for controlling a fuel cell which has an anode and a cathode includes first and second circuitry which are utilized, to selectively short the anode to the cathode and further is useful in measuring the rate of voltage recovery following short...
05/25/2010
7718288Integration of an electrical diode within a fuel cell
A fuel cell system that employs a diode electrically coupled between bipolar plates in a fuel cell of a fuel cell stack for preventing the fuel cell between the plates from reversing its polarity. The diode is a thin-sheet p-n diode including doped semiconductor lay...
05/18/2010
7704619Fuel cell system and method of controlling same
A fuel cell system includes a fuel cell having a stack composed of stacked cells that generate electrical power from anode gas and cathode gas; a cell voltage measuring device connected to the cells to measure the voltages of the cells, the cell voltage measuring de...
04/27/2010
7695838Fuel cell system and diagnosis system for the fuel cell system
A part of cell stack portions constituting a part of a fuel cell stack is used as a voltage detection portion, the size of a frequency component belonging to a predetermined specific frequency range is extracted from a voltage signal detected and the existence/absen...
04/13/2010
7682719Method for adaptive prediction of stack voltage in automotive fuel cell systems
A method for revising a reference polarization curve of a fuel cell stack that identifies the relationship between the voltage and the current of the stack over time. When the stack is operating at a low load where kinetic voltage losses of the stack dominate, a fir...
03/23/2010
7678480Fuel cell system
At system shutdown, supply of hydrogen to a fuel electrode of a fuel cell stack is stopped, and at the same time dry air is supplied to an oxidant electrode. The dry air is subsequently supplied also to the fuel electrode, and finally the system is shut down. This a...
03/16/2010
7659019Thermally primed hydrogen-producing fuel cell system
Thermally primed fuel processing assemblies and hydrogen-producing fuel cell systems that include the same. The thermally primed fuel processing assemblies include at least one hydrogen-producing region housed within an internal compartment of a heated containment s...
02/09/2010
7659018Fuel cell power control unit
The present invention provides a highly efficient fuel cell power supply unit, which is constructed by directly connecting a fuel cell with a capacitor. In this power supply unit, a control device of the unit calculates the output voltage V2 of the fuel c...
02/09/2010
7618728Fuel cell system and method of controlling idle stop of the fuel cell system
A fuel cell system and an idle stop controlling method for the fuel cell system. The fuel cell system includes: a fuel gas supply means for supplying fuel gas; an oxidant gas supply means for supplying oxidant gas; a fuel cell to which the fuel gas and the oxidant g...
11/17/2009
7611785Generation method with fuel cell generation system and fuel cell generation system
A generation method using a fuel cell generation system, comprising the steps of: supplying a fuel gas 14a to a fuel electrode 21 through fuel gas passages 14 at a low pressure, supplying an oxidizer gas 15a to an oxidizer e...
11/03/2009
7597976Floating base load hybrid strategy for a hybrid fuel cell vehicle to increase the durability of the fuel cell system
A fuel cell system employing a floating base load hybrid strategy for reducing fast voltage transients of a FCPM. A power request signal is applied to an average power calculation processor that calculates the average power requested over a predetermined previous pe...
10/06/2009
7588848Fuel cell controller and control method
The following control is performed. During startup of a fuel cell 1, a fuel gas is supplied to an anode 1b of the fuel cell 1 and an oxidant gas is supplied to a cathode 1c of the fuel cell 1, thereby starting power g...
09/15/2009
7579097Fuel cell voltage feedback control system
A method and apparatus according to the present invention controls current that is supplied to a load by a fuel cell stack. A minimum voltage of a plurality of fuel cells in a fuel cell stack is monitored. The current load supplied by the fuel cell stack is increase...
08/25/2009
7569295Fuel cell unit and state display control method
A fuel cell unit for supplying electric power to an electronic apparatus includes a DMFC that generates electric power using methanol as fuel. A microcomputer examines whether or not the fuel cell unit has been installed in the electronic apparatus. When the fuel ce...
08/04/2009
7517600Multiple pressure regime control to minimize RH excursions during transients
A control system for a fuel cell stack that controls the relative humidity of the cathode outlet gas during stack power transients to provide better cathode outlet gas relative humidity control by reducing the dynamic pressure range and thus the dynamic cathode outl...
04/14/2009
7476457Fuel cells system and method of controlling cells
A system which enables fuel cells to be activated at a working point of high energy conversion efficiency. A control unit calculates a required output of an inverter from an input accelerator travel. The control unit specifies an output electric current-output volta...
01/13/2009
7473480Low voltage compressor operation for a fuel cell power system
An apparatus and method for operating a fuel cell power system utilizing a low voltage power source and system power to power an airmover. The fuel cell power system uses a low voltage power source to power the airmover during start-up and transitions to using syste...
01/06/2009
7468215Self-starting fuel cell assembly
A self-starting fuel cell assembly and methods of starting fuel cells are disclosed. In at least certain examples, the fuel cell assembly can be configured to supply voltage to a fuel source, an air source or both. The fuel cell assembly further includes a control s...
12/23/2008
7449259Power converter architecture and method for integrated fuel cell based power supplies
A fuel cell based power supply comprises a main power converter and control that allows the fuel cell stack to be electrically shorted from time-to-time to improve performance. Additionally, the power converter may temporarily disconnect the fuel cell stack from the...
11/11/2008
7442457Fuel cell system with compressor and also a method for operating such a fuel cell system
A fuel cell system comprising a plurality of fuel cells combined together to form a fuel cell stack, with the fuel cell stack having an anode side with an inlet for a fuel and an outlet for non-consumed fuel and exhaust gases arising at the anode side as well as a c...
10/28/2008
7442456Current control for parallel fuel cell stacks
A fuel cell system includes fuel cell stacks electrically connected in parallel and supplying a gross current to a load. A controller determines the gross load current, and produces a desired current through the load by adjusting, based on the gross load current, at...
10/28/2008
7442455Apparatus and method for protecting fuel cell
A memory unit stores maps of predetermined determination threshold values for detection values detected by a hydrogen sensor according to an operating state of a fuel cell such as a difference in pressure between reaction gases at an anode and a cathode, supply pres...
10/28/2008
7442453Decontamination procedure for a fuel cell power plant
A decontamination procedure for a fuel cell power plant (10) includes operating the plant to produce electrical power for an operating period, and then terminating operation of the plant (10) for a decontamination period, and then, whenever optimal ele...
10/28/2008
7435493Fuel cell and method for operating the same
In a cell stack of fuel cells according to the present invention, an output power density is measured at each of an upstream-side electricity generating section, which is located at an upstream-side of flow of fuel, and a downstream-side electricity generating secti...
10/14/2008
7431898Chemical reaction apparatus and power supply system
A chemical reaction apparatus includes a solid body in which a reaction flow path is formed, and a heater having a thin-film heater formed on the body to oppose the reaction flow path and at least partially exposed to the reaction flow path, and which supplies a pre...
10/07/2008
7432002Method for regeneration of performance in a fuel cell
A process for improved performance in at least one fuel cell, having a loss in power output of at least 5% of an initial power output, wherein the fuel cell comprises a cathode, an anode, an anode chamber, a cathode chamber, a fuel comprising an anolyte that flows t...
10/07/2008
7432005Model-based feed-forward control system for power (or current) in a fuel cell system
A control system and method controls an output of a fuel cell. A fuel cell stack controller that receives an output request signal and that generates an oxidant request signal and a fuel request signal using a first inverse model. A fuel delivery controller receives...
10/07/2008
7427450Hybrid fuel cell system with battery capacitor energy storage system
A fuel cell system that employs a super capacitor and battery electrically coupled in series with each other and in parallel with a fuel cell stack on a power bus line. As the voltage on the power bus line changes over the operating requirements of the system, the s...
09/23/2008
7427447Fuel cell module and fuel cell motor vehicle
A fuel cell module has a fuel cell that supplies a drive power to a vehicle, a case that covers the fuel cell, and a current breaker that is attached to the case. The current breaker is manually operable from outside the case, and is capable of interrupting an outpu...
09/23/2008
7416796Fuel cell with capacitor attached to the fuel cell separator plate
The present invention provides a capacitor-embedded fuel cell. The capacitor-embedded fuel cell comprises a membrane electrode assembly including a hydrogen ion exchange membrane consisting of a polymeric electrolyte, and a pair of gas diffusion electrodes disposed ...
08/26/2008
7410712Procedure 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 the cathode flow field and rapidly displacing the air in the anode flow...
08/12/2008
7410710Firstout 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 initiator signals, each corresponding to one of a plurality of shutdo...
08/12/2008
7410711Fuel 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 of the fuel cell on the basis of the detected output current and the ...
08/12/2008
7399541Fuel 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 for replenishment, the amount of air remaining in an air supply system...
07/15/2008
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