Patent application number | Description | Published |
20090017343 | FUEL CELL SYSTEM HAVING PHOSPHORIC ACID POLYMER ELECTROLYTE MEMBRANE AND METHOD OF STARTING THE SAME - A method of starting a fuel cell system and a fuel cell system including: a fuel cell stack having a phosphoric acid polymer electrolyte membrane, in which an electrochemical reaction occurs using hydrogen and oxygen; a cooling water circulating unit that supplies heated cooling water to the stack to increase the temperature of the stack; and an air circulating unit that provides heated air, as a source of the oxygen, to the stack. The circulating unit can include a heating unit to directly heat the air and/or a heat exchanger to heat the air using air exhausted from the stack. The temperature of the stack can be rapidly increased by supplying the heated air and by generating an endothermic reaction in the stack. The condensation of water vapor in the stack is repressed while the stack is heated, by the heating of the air and/or by increasing the pressure of the air. | 01-15-2009 |
20090035611 | METHOD OF STARTING FUEL CELL SYSTEM - Provided is a method of starting a polymer electrolyte membrane fuel cell (PEMFC) stack by rapidly increasing the temperature of the PEMFC stack. The PEMFC stack includes: a first flow line that is connected to upper parts of cooling plates installed in a plurality of unit cells of the PEMFC stack; a second flow line that is connected to lower parts of the cooling plates; a coolant reservoir installed between the first flow line and the second flow line; a heat exchanger installed between the first flow line and the coolant reservoir; a by-pass line that connects a point between the coolant reservoir and the second flow line, to the first flow line; a heating element that heats coolant in the by-pass line; a first valve installed between the first flow line and the heat exchanger; and a second valve that selectively connects the coolant reservoir, the second flow line, and the by-pass line. The method of starting a PEMFC stack includes: closing the first valve and controlling the second valve so that the second flow line and the by-pass line are connected to each other, and the coolant in the coolant reservoir is not connected to the second flow line and the by-pass line; and increasing the temperature of the PEMFC stack by heating the coolant in the by-pass line, using the heating element. | 02-05-2009 |
20100132414 | SOFT WATER FORMING DEVICE AND WASHING MACHINE INCLUDING THE SAME - A soft water forming device includes; a capacitive deionization stack (“CDI”) stack including at least one anode and at least one cathode that are separately and alternately stacked to adsorb ions contained in water, and a pumping unit which pumps one of water supplied to the CDI stack and water which has passed through the CDI stack, the pumping unit including; a casing have a water inlet and a water outlet and a rotor which rotates due to motive power supplied by an external motor and pumps the water supplied into the casing. | 06-03-2010 |
20100136406 | COOLING DEVICE OF BATTERY PACK - A battery pack including battery cells, a housing to house the battery cells, and a cooling device that cools air flowing through the housing. The cooling device may be installed on an intermediate portion of the housing. The cooling device may include a cooling pipe, in which water flows. | 06-03-2010 |
20100140096 | ELECTRODE FOR CAPACITIVE DEIONIZATION, CAPACITIVE DEIONIZATION DEVICE AND ELECTRIC DOUBLE LAYER CAPACITOR INCLUDING THE ELECTRODE - An electrode for capacitive deionization, the electrode including an active material having an oxygen/carbon (“O/C”) atomic ratio between about 0.1 and about 1 and a specific surface area between about 500 square meters per gram (“m | 06-10-2010 |
20100143771 | Rotatable Battery Pack - A rotatable battery pack having a first electrode plate and a second electrode plate disposed in parallel to each other and allowing a plurality of battery cells to be disposed between the first electrode plate and the second electrode plate; a casing enclosing the first electrode plate and the second electrode plate and having both ends opened so as to allow cooling air to flow in order to cool the plurality of battery cells; a first terminal protruding from a center of the first electrode plate to an outside of the casing; a second terminal protruding from a center of the second electrode plate to the outside of the casing in a direction opposite that of the first electrode; and a driving motor driving the first electrode plate to rotate the plurality of battery cells, wherein the first terminal and the second terminal are formed on a rotation axis of the first electrode plate. | 06-10-2010 |
20100151289 | METHOD OF REMOVING RESIDUAL OXYGEN IN FUEL CELL BY ELECTROCHEMICAL PURGING - A method of removing residual oxygen in a residential high temperature non-humidification fuel cell stack including at least one cathode. The method includes making the pressure in the cathode higher than that outside of the cathode and maintaining airtight sealing of the cathode of the fuel cell stack, removing the residual oxygen in the fuel cell stack, and stopping supplying of fuel to the fuel cell stack. The setting of the pressure includes blocking air flow out of the cathode, comparing the pressure in the cathode with a set pressure higher than the pressure outside the cathode, and supplying air to the cathode until the pressure in the cathode is the same as or is higher than the set pressure. | 06-17-2010 |
20100170784 | INTEGRATED ELECTRODE-CURRENT COLLECTOR SHEET FOR CAPACITIVE DEIONIZATION, CAPACITIVE DEIONIZATION DEVICE AND ELECTRIC DOUBLE LAYER CAPACITOR HAVING THE SAME - An integrated electrode-current collector sheet includes a current collector including uneven portions disposed on at least one side of the current collector; and an active material layer disposed on the current collector, the active material layer at least partially covering the uneven portions. In addition, disclosed are a capacitive deionization device and an electric double layer capacitor including the integrated electrode-current collector sheet. | 07-08-2010 |
20100183933 | FUEL CELL SYSTEM AND METHOD OF OPERATING THE SAME - A fuel cell system in which a low open circuit voltage (OCV) is maintained in a start-up mode and in a shut-down mode, and a method of operating the same, the method including: supplying an anode off-gas and air to the cathode in an open circuit voltage state in a start-up mode and cutting off supply of the fuel gas to the cathode in a normal operating mode; and supplying the fuel gas and air to the cathode in a shut-down mode, and if a load is cut off, purging the cathode and the anode in the OCV state. | 07-22-2010 |
20100266918 | FUEL CELL STACK AND FUEL CELL SYSTEM WITH PLURALITY OF GENERATION MODULES - A fuel cell has a structure in which generation modules are stacked. In each of the generation modules, there are cells are stacked. Each of the cells generates unitary power from fuel energy. A fuel cell system including the fuel stack operates either all or some of the generation modules in consideration of the quantity of power consumed by a load. | 10-21-2010 |
20110042205 | CAPACITIVE DEIONIZATION DEVICE - A capacitive deionization device includes; at least one flow path configured for influent water flow, at least one pair of electrodes, at least one charge barrier disposed between the at least one flow path and a corresponding electrode of the at least one pair of electrodes, and at least one electrolyte solution disposed between the at least one electrode of the at least one pair of electrodes and a corresponding charge barrier of the at least one charge barrier, wherein the at least one electrolyte solution is different in at least one of ionic concentration and ionic species from the influent water. | 02-24-2011 |
20110223522 | BIPOLAR PLATE FOR FUEL CELL, METHOD OF MANUFACTURING THE BIPOLAR PLATE, AND FUEL CELL INCLUDING THE BIPOLAR PLATE - A bipolar plate for a fuel cell includes a metal plate and a coating layer disposed on a surface of the metal plate. The coating layer includes a polymer of an oxazine-based compound, particularly, a benzoxazine-based compound and a conducting material. A method of manufacturing the bipolar plate includes coating a surface of a metal plate with a coating layer forming composition including at least one oxazine-based compound, a conducting material, and a solvent; and thermally treating the metal plate coated with the coating layer forming composition. A fuel cell includes the bipolar plate. | 09-15-2011 |
20120028156 | STACK HAVING UNIFORM TEMPERATURE DISTRIBUTION AND METHOD OF OPERATING THE SAME - A stack and a method of operating the stack. A method of operating a stack having a plurality of cells and a plurality of cooling plates includes: supplying a working fluid to a first group of the cooling plates; and re-supplying the working fluid passed through the first group of the cooling plates to a second group of the cooling plates, wherein the first and second groups are divided according to an operating temperature in the stack. | 02-02-2012 |
20120171592 | UNIT CELL OF FUEL CELL STACK AND FUEL CELL STACK HAVING THE UNIT CELL - A unit cell of a fuel cell stack, and a fuel cell stack including the unit cell, where the unit cell includes channel plates including first and second manifolds, a plurality of channels and channel connecting units; hard plates arranged to contact surfaces of the channel connecting units; and gaskets arranged to surround the plurality of channels and first and second manifolds between the channel plates and the hard plates. | 07-05-2012 |
20120183871 | METHOD OF OPERATING HIGH TEMPERATURE FUEL CELL - A method of operating a high-temperature fuel cell, the method including increasing the temperature of a fuel cell stack the operation of which has stopped; starting the operation of the fuel cell stack and applying at least a portion of a load to the fuel cell stack when the temperature of the fuel cell stack reaches a first temperature; and applying any remaining load to the fuel cell stack when the temperature of the fuel cell stack reaches a second temperature that is higher than the first temperature. | 07-19-2012 |
20130236800 | METHOD OF ACTIVATING FUEL CELL - A method of activating a fuel cell includes: supplying a fuel to an anode of the fuel cell; supplying a gas mixture to a cathode of the fuel cell; applying a second load, which is equal to or less than a predetermined first load, to a stack of the fuel cell after supplying the gas mixture to the cathode; discontinuing the supply of the gas mixture; resupplying the gas mixture to the cathode when a voltage of the stack of the fuel cell is a predetermined voltage or less after discontinuing the supply of the gas mixture; and applying a third load, which is higher than the predetermined first load, to the stack of the fuel cell, where the supply of the fuel to the anode of the fuel cell is maintained. | 09-12-2013 |
20130266885 | FUEL CELL STACK AND FUEL CELL COMPRISING THE SAME - A fuel cell stack includes a membrane electrode assembly, plates on the membrane electrode assembly, and gaskets between the plates, where the membrane electrode assembly includes an electrolyte membrane-electrode including an electrolyte membrane between first and second electrodes thereof, and gas diffusion layers in contact with the first and second electrodes, where the gaskets are in contact with the plates and surround the membrane electrode assembly, where a ratio of change in compressibility of the gaskets is in a range from 0.5 times to 1.5 times a ratio of change in compressibility of the gas diffusion layers at a same compressibility, where a compressibility is a ratio of a reduced thickness to an initial thickness, and where the ratio of change in compressibility is defined by Equation 1 below: Ratio of change in compressibility=ΔP/Δt, where ΔP denotes a pressure change, and Δt denotes a thickness change. | 10-10-2013 |
20140099563 | FUEL CELL STACK HAVING COOLING MEDIUM LEAKAGE PREVENTING UNIT - A fuel cell stack includes a plurality of unit cells, a cooling plate and a block plate. Each unit cell includes a cathode electrode and an anode electrode respectively at opposing sides of an electrolyte membrane, and a separator facing each of the cathode electrode and the anode electrode. The cooling plate is between adjacent unit cells a cooling medium flows in the cooling plate. The block plate is between the cooling plate and an adjacent unit cell of the adjacent unit cells. The block plate blocks the cooling medium flowing in the cooling plate from contacting the adjacent unit cell of the adjacent unit cells. | 04-10-2014 |
20140162165 | FUEL CELL STACK INCLUDING COOLING PLATE FOR IMPROVING TEMPERATURE DISTRIBUTION - A fuel cell stack includes a first separating plate, a second separating plate corresponding to the first separating plate, a plurality of cells comprising a membrane electrode assembly disposed between the first separating plate and the second separating plate, and a cooling plate disposed between the plurality of cells, where a cooling channel is defined at opposing surfaces of the cooling plate. | 06-12-2014 |
20150064595 | FLUID TUBE INCREASING UNIFORMITY OF FLUID FLOW AND APPARATUS INCLUDING THE SAME - A fluid tube includes: a first fluid tube; a second fluid tube connected to the first fluid tube; and a flow velocity equalizer in the second fluid tube, where the flow velocity equalizer increases a uniformity of fluid flow passed therethrough, the second fluid tube is wider than the first fluid tube, and the flow velocity equalizer includes a diverging tube and a converging tube. The fluid tube may further include a fluid divider between the flow velocity equalizer and the first fluid tube. The diverging tube of the flow velocity equalizer may have a width increasing in a fluid flow direction, and the converging tube of the flow velocity equalizer may include a plurality of converging tubes having widths decreasing in the fluid flow direction. | 03-05-2015 |