Patent application number | Description | Published |
20080252299 | Cell or stack for evaluating performance of fuel cell and method of evaluating performance of fuel cell using the same - The present invention provides a cell or stack for evaluating the performance of a fuel cell and a method of evaluating the performance of the fuel cell using the cell or stack, in which a semiconductor thermoelectric device, attached to the side surface of the unit cell or stack of the fuel cell, is provided so as to evaluate the performance of the fuel cell in an environment in which temperature is maintained at a uniform temperature. | 10-16-2008 |
20090186252 | ORGANIC-INORGANIC COMPOSITE POLYMER ELECTROLYTE MEMBRANE FOR FUEL CELLS AND ITS PREPARATION METHOD - The present invention relates to a preparing process an organic-inorganic composite polymer membrane for fuel cell by using sol-gel process. At this time, it is characterized in that when a sulfonated hydrocarbons polymer having ion conductivity is cast with film shape, sol-gel process which enables to distribute an inorganic matter having an excellent cation exchange and moisture holding capacity homogeneously is used. With homogeneous introduction of an inorganic matter into a polymer matrix by sol-gel process according to the present invention, it is possible to improve a phenomenon that an inorganic matter is partially concentrated at some position, thereby enabling to obtain an ion conducting organic-inorganic composite polymer membrane having an excellent ion conductivity. | 07-23-2009 |
20100236335 | INTEGRATED MULTI-MEASUREMENT SYSTEM FOR MEASURING PHYSICAL PROPERTIES OF GAS DIFFUSION LAYER FOR POLYMER ELECTROLYTE FUEL CELL WITH RESPECT TO COMPRESSION - Disclosed is an integrated multi-measurement system for measuring physical properties including thickness, electrical resistance and differential pressure of a gas diffusion layer for a polymer electrolyte fuel cell with respect to compression. The integrated multi-measurement system simultaneously measures changes in the physical properties of the gas diffusion layer depending on pressure upon measurement of the physical properties of the gas diffusion layer of the fuel cell and also measures through-plane permeability in which a gas is passed through a sample in a direction perpendicular to the sample and in-plane permeability in which a gas is passed through a sample in a direction parallel to the sample. | 09-23-2010 |
20110059387 | HIGHLY PROTON CONDUCTIVE CROSSLINKED VINYLSULFONIC ACID POLYMER ELECTROLYTE COMPOSITE MEMBRANES AND ITS PREPARATION METHOD FOR POLYMER ELECTROLYTE FUEL CELLS - A highly proton conductive polymer electrolyte composite membrane for a fuel cell is provided. The composite membrane includes crosslinked polyvinylsulfonic acid. The composite membrane is produced by impregnating a mixed solution of vinylsulfonic acid as a monomer, a hydroxyl group-containing bisacrylamide as a crosslinking agent and a photoinitiator or thermal initiator into a microporous polymer support, polymerizing the monomer, and simultaneously thermal-crosslinking or photo-crosslinking the polymer to form a chemically crosslinked polymer electrolyte membrane which is also physically crosslinked with the porous support. Further provided is a method for producing the composite membrane in a simple manner at low cost as well as a fuel cell using the composite membrane. | 03-10-2011 |
20140023952 | METHOD FOR PREPARING CATALYST LAYER BY IN-SITU SOL-GEL REACTION OF TETRAETHOXYSILANE IN NAFION IONOMER SOLUTION - Provided are a method for preparing a catalyst layer by an in-situ sol-gel reaction of tetraethoxysilane, and a fuel cell including the catalyst layer prepared thereby. Addition of silica mitigates specific adsorption of sulfonate groups contained in a Nafion ionomer on a Pt catalyst layer in a high-voltage region where the role of a catalyst predominates, resulting in improvement of ORR performance. | 01-23-2014 |
20140080022 | Apparatus and Method for Managing Fuel Cell Vehicle System - Provided are an apparatus and a method for managing a fuel cell vehicle system, and more particularly, an apparatus and a method for managing a fuel cell vehicle system capable of optimally maintaining a driving method based on environmental information and product information. | 03-20-2014 |
20140080023 | Apparatus and Method for Managing Stationary Fuel Cell System - Provided are an apparatus and a method for managing a stationary fuel cell system, and more particularly, an apparatus and a method for managing a stationary fuel cell system capable of optimally maintaining a driving method based on environmental information and product information. | 03-20-2014 |
Patent application number | Description | Published |
20140167609 | LIGHT DRIVING APPARATUS AND DRIVING METHOD THEREFOR - There are provided a light driving apparatus capable of being commonly used in various types of dimmers, and a driving method therefor. The light driving apparatus includes: a driving unit supplying driving power to a light emitting device according to controlling to drive the light emitting device; and a general-purpose dimming controlling unit controlling dimming of the light emitting device by converting a range of a brightness control signal of an external dimmer into a first voltage range according to a preset ratio to control the supply of power from the driving unit. | 06-19-2014 |
20140176001 | DIMMING CONTROL APPARATUS, LIGHT SYSTEM DRIVING APPARATUS AND DIMMING CONTROL METHOD - There are provided a dimming control apparatus, a lighting system driving apparatus, and a dimming control method, the dimming control apparatus including a voltage converting unit converting a dimming signal from a dimmer into dimming voltage, an analog-to-digital (A/D) converting unit converting the dimming voltage into a digital dimming value, a dimming setting unit determining whether or not the digital dimming value is included in a preset dimming value range, and when the digital dimming value is not included in the preset dimming value range, resetting the dimming value range so as to allow the digital dimming value to be included in the reset dimming value range, a memory unit storing a dimming control value corresponding to the digital dimming value, and a dimming control unit generating a dimming control signal based on the dimming control value corresponding to the digital dimming value from the A/D converting unit. | 06-26-2014 |
20140176111 | VOLTAGE CONTROL CIRCUIT WITH TEMPERATURE COMPENSATION FUNCTION - There is provided a voltage control circuit that is applicable to a LED device, a power supply or the like. The voltage control circuit includes: a voltage dividing unit dividing a supply voltage into a first voltage and a second voltage different from each other; a shunt regulator adjusting the first voltage according to the second voltage; and an output circuit unit outputting the voltage regulated by the shunt regulator. | 06-26-2014 |
20140184103 | FEEDBACK CONTROL CIRCUIT AND POWER SUPPLY APPARATUS USING DIMMING ADJUSTMENT AND FORWARD VOLTAGE CONTROL - There are provided a feedback control circuit and power supply apparatus using dimming adjustment and forward voltage control. The feedback control circuit includes: a voltage detection unit detecting an output voltage from a transformer and providing a detection voltage; a dimming unit generating a varied dimming signal; and a feedback circuit unit comparing the detection voltage with a reference voltage varied according to the dimming signal and providing a feedback voltage for controlling a power transmission ratio of the transformer. | 07-03-2014 |
Patent application number | Description | Published |
20100313158 | METHOD FOR EDITING DATA IN MOBILE TERMINAL AND MOBILE TERMINAL USING THE SAME - A method for editing data in a mobile terminal configured to conveniently change a symbol and a mobile terminal using the method for editing data are disclosed, wherein the method includes displaying an inputted data on a touch screen, displaying on the touch screen a progress bar including a handler if a progress bar display signal is inputted, generating an undo signal or a redo signal based on a drag direction by touching the handler, and deleting the data in response to the undo signal, or reinstate the data in response to the redo signal. | 12-09-2010 |
20130162037 | METHOD, DEVICE, AND SYSTEM FOR CONTROLLING CHARGING AND DISCHARGING OF ENERGY STORAGE APPARATUS - A charging/discharging control system of an energy storage apparatus includes a weather information collection module, a load information collection module, a load grouping module which classifies a plurality of loads into at least one load group based on a load correlation according to a predetermined condition, and an energy storage apparatus charging/discharging control module which determines a battery charging or discharging level per time slot of each of a plurality of energy storage apparatuses by using at least one of an estimated load amount of each load per time slot, a battery charging amount of the energy storage apparatus per time slot via solar generation, and a battery charging amount per time slot via system power, wherein a particular load corresponding to a lowest rate for a unit load is determined by using battery charging/discharging information and power rate information per time slot. | 06-27-2013 |