Patent application number | Description | Published |
20090017355 | SOLID POLYMER FUEL CELL - A solid polymer fuel cell stack. A fuel cell which can uniformly supply gas in a short time to all stacked cells not only in a steady state operation but also in a transient operation state, such as start, stop, or load variation operation, is provided. In each cell included in the solid polymer fuel cell stack, an intake manifold is divided into a connection space with a separator channel and one more space by forming a protrusion or a bridge portion in the intake manifold, and the structure of the protrusion or the bridge portion is adjusted depending on each cell. | 01-15-2009 |
20090023029 | Fuel Cell - In a fuel cell composed of a pair of separators with a membrane electrode assembly sandwiched therebetween, gas passages having a plurality of generally linear passage portions, and bent passage portions each of which makes one end portion of the linear passage portions communicated with the other end portion of the linear passage portions, are formed so as to be communicative from a gas introducing port to a discharge port. In inner wall surfaces of the groove portions of the separators constituting the linear passage portions, water-retaining groove portions capable of retaining inside thereof at least part of water generated in the gas passage are formed in such a grooved configuration as to be substantially continuous along the passage portion. As a water drop generated within the gas passage makes contact with retained water within the water-retaining groove portions, growth of the water drop is suppressed to avoid any blockage of the gas passage, by which the anti-flooding property is improved. | 01-22-2009 |
20090023034 | FUEL CELL - A fuel cell (FC) of the present invention includes: four fastening rods ( | 01-22-2009 |
20090029217 | SOLID POLYMER FUEL CELL - It is an object of the present invention to provide a means for integrating an MEA and a pair of separators and regulate their positions without using parts that are specifically dedicated for position regulation use. More specifically, the present invention provides a polymer electrolyte fuel cell including a frame-integrated MEA, a separator having a channel for supplying and releasing a fuel gas, and a separator having a channel for supplying and releasing an oxidizer gas, and, in this fuel cell, the frame body of the frame-integrated MEA has a plurality of projections having a hook-shaped tip on both planes of the frame body and each separators has a plurality of stepped parts, and the projections on the frame body and the stepped parts on the pair of separators are integrated by fitting together with each other. | 01-29-2009 |
20090029228 | Separator Plate And Fuel Cell - The invention relates to a separator plate for use in a fuel cell and to a fuel cell. The separator plate has: a passage groove group including a plurality of gas passage grooves | 01-29-2009 |
20090053573 | Fuel cell - The invention provides a fuel cell comprising one or more cells ( | 02-26-2009 |
20090136811 | MEA, MEA Manufacturing Method, and Polymer Electrolyte Fuel Cell - An MEA having an MEA body part | 05-28-2009 |
20090136823 | FUEL CELL SEPARATOR AND FUEL CELL - A fuel cell separator ( | 05-28-2009 |
20090142641 | FUEL CELL MODULE AND FUEL CELL - For the purpose of providing a fuel cell module having a small number of molding processes and favorable productivity, the edge of a polymer electrolyte membrane ( | 06-04-2009 |
20090155661 | FUEL CELL MODULE, FUEL CELL, AND METHOD OF MANUFACTURING FUEL CELL MODULE - For the purpose of providing a fuel cell module having a small number of molding processes and favorable productivity, the edge of a polymer electrolyte membrane ( | 06-18-2009 |
20090162727 | FUEL CELL SEPARATOR AND FUEL CELL - A fuel cell separator and a fuel cell are provided that can improve uniformity in reaction gas flow rate and can prevent flooding due to excessive condensed water in passage grooves appropriately. A reaction gas passage region ( | 06-25-2009 |
20090181269 | FUEL CELL STACK, FUEL CELL SYSTEM AND METHOD OF OPERATING FUEL CELL SYSTEM - A fuel cell stack of the present invention includes intermediate current collectors ( | 07-16-2009 |
20090202884 | POLYMER ELECTROLYTE FUEL CELL AND MANUFACTURING METHOD FOR ELECTRODE-MEMBRANE-FRAME ASSEMBLY - A MEA-frame assembly is arranged in a mold for injection molding to form a first flow passage arranged so as to extend along the outer periphery of an electrode between the outer periphery of the electrode and the inner periphery of a frame, a second flow passage arranged so as to extend along an inner elastic member between the inner periphery and outer periphery of the frame and a plurality of connecting flow passages which communicate the first flow passage with the second flow passage. An elastic resin is injected into the first flow passage to fill the first flow passage with the elastic resin and to fill the second flow passage with the elastic resin through each of the communicating flow passages, thereby an elastic member which hermetically seals the space between the MEA-frame assembly and the separator is integrally formed. | 08-13-2009 |
20090233131 | POLYMER ELECTROLYTE FUEL CELL AND MANUFACTURING METHOD FOR ELECTRODE-MEMBRANE-FRAME ASSEMBLY - A MEA-frame assembly is arranged in a mold for injection molding to form a first flow passage arranged so as to extend along the outer periphery of an electrode between the outer periphery of the electrode and the inner periphery of a frame, a second flow passage arranged so as to extend along an inner elastic member between the inner periphery and outer periphery of the frame and a plurality of connecting flow passages which communicate the first flow passage with the second flow passage. An elastic resin is injected into the first flow passage to fill the first flow passage with the elastic resin and to fill the second flow passage with the elastic resin through each of the communicating flow passages, thereby an elastic member which hermetically seals the space between the MEA-frame assembly and the separator is integrally formed. | 09-17-2009 |
20090246586 | FILM ELECTRODE ASSEMBLY FOR FUEL CELL, POLYMER ELECTROLYTIC CELL FOR FUEL CELL AND METHOD FOR MANUFACTURING POLYMER ELECTROLYTIC FUEL CELL AND FILM ELECTRODE ASSEMBLY - There is provided a film electrode assembly for a fuel cell capable of preventing a polymer electrolyte film from being exposed. The film electrode assembly includes: a main body portion of a film electrode assembly having a polymer electrolyte film, and a pair of electrode layers having catalyst layers placed on the two surfaces of the polymer electrolyte film on the inner side from the peripheral edge portion thereof and diffusion layers each having a peripheral edge protruding from the catalyst layer, which are laminated on one another, with a gap being formed between the protruding portion of the diffusion layer and the peripheral edge portion of the polymer electrolyte film; a frame member that sandwiches the peripheral edge portion of the polymer electrolyte film between the paired electrode layers with a gap therebetween, and is formed so as to surround an outer edge of the polymer electrolyte film; and gaskets made of a thermoplastic resin, which are placed on the two surfaces of the frame member. Each gasket includes an annular portion that covers the peripheral edge portion of the main body portion of the film electrode assembly over the entire circumference thereof along the inner edge of the frame member and a gap filling portion that fills the gap. | 10-01-2009 |
20090286121 | SOLID POLYMER ELECTROLYTIC FUEL CELL - Elastic members that are integrally joined to a frame member are placed between an outer edge of an electrode unit and an inner edge of the frame member, and in the assembled state of the single cell module, the elastic members are elastically deformed in the thickness direction of a membrane-electrode-frame assembly so that the gap between the membrane-electrode-frame assembly and the separator is sealed in a tightly contact state. | 11-19-2009 |
20090286123 | POLYMER ELECTROLYTE FUEL CELL AND MANUFACTURING METHOD FOR ELECTRODE-MEMBRANE-FRAME ASSEMBLY - In a manufacturing method for an electrode-membrane-frame assembly in a fuel cell, a first frame member and an electrolyte membrane member are arranged in a first mold for injection molding such that the edge of the electrolyte membrane member is arranged on the first frame member, a second mold is arranged to form a resin flow passage for forming a second frame member which is in contact with the first frame member by interposing the electrolyte membrane member, and a part of the edge of the electrolyte membrane member is pressed and fixed to the first frame member by a presser member mounted on the second mold and a molding resin material is injected into the resin flow passage to form a second frame member. | 11-19-2009 |
20090305104 | POLYMER ELECTROLYTE FUEL CELL - In a polymer electrolyte fuel cell provided with a fuel cell stack assembled by sandwiching a plurality of stacked single cell modules with a plurality of fastening members through a pair of end plates, the fuel cell including a first elastic member arranged between the fastening member and the end plate and a plurality of second elastic members arranged between the end plate and the end of the fuel cell stack, wherein each of the second elastic members is arranged on the surface of the end plate corresponding to the electrode portion of a membrane electrode assembly in each of the single cell module and each of the first elastic members is arranged on the surface of the end plate corresponding to a seal member arrangement region in which seal member is arranged between the periphery of the membrane electrode assembly and a pair of separator plates in each single cell module. | 12-10-2009 |
20100098989 | ELECTRODE-MEMBRANE-FRAME ASSEMBLY FOR POLYELECTROLYTE FUEL CELL, MANUFACTURING METHOD THEREFOR, AND POLYELECTROLYTE FUEL CELL - In a solid polyelectrolyte fuel cell, with a frame including a frame body main part placed along a peripheral edge portion of a membrane, a plurality of first retaining portions which are arrayed so as to protrude from an inner edge of the frame body main part and which retain the front surface side of the membrane, and a plurality of second retaining portions which are arrayed so as to protrude from the inner edge of the frame body main part and which retain the back surface side of the membrane, the first retaining portions and the second retaining portions are so arrayed that retaining positions of the membrane by the first retaining portions and retaining positions of the membrane by the second retaining portions are alternately placed. A plurality of front-surface side elastic members are placed on the front surface of the membrane between neighboring ones of the first retaining portions while a plurality of back-surface side elastic members are placed on the back surface of the membrane between neighboring ones of the second retaining portions. | 04-22-2010 |
20100136460 | FUEL CELL - An object of the present invention is to provide a fuel cell including a reaction gas supply path which makes it difficult to cause water condensation in a region near an end plate. | 06-03-2010 |
20100143819 | POLYMER ELECTROLYTE FUEL CELL AND MANUFACTURING METHOD FOR ELECTRODE-MEMBRANE-FRAME ASSEMBLY - In a manufacturing method for an electrode-membrane-frame assembly in a fuel cell, a first frame member and an electrolyte membrane member are arranged in a first mold for injection molding such that the edge of the electrolyte membrane member is arranged on the first frame member, a second mold is arranged to form a resin flow passage for forming a second frame member which is in contact with the first frame member by interposing the electrolyte membrane member, and a part of the edge of the electrolyte membrane member is pressed and fixed to the first frame member by a presser member mounted on the second mold and a molding resin material is injected into the resin flow passage to form a second frame member. | 06-10-2010 |
20100159345 | CELL STACK OF FUEL CELL AND METHOD OF FASTENING CELL STACK OF FUEL CELL - A cell stack of a fuel cell comprises a cell stack body including a cell stack structure including plural cells stacked together; an elastic member disposed at an end of the cell stack structure in a direction in which the plural cells are stacked, and a pair of end plates sandwiching the cell stack structure and the elastic member, and a fastener band extending to surround the cell stack body and to cover a pair of end surfaces and a pair of opposing side surfaces of the cell stack body, the fastener band including a first band engagement portion and a second band engagement portion at both end portions thereof, respectively, and the cell stack body is fastened by the fastener band by direct or indirect engagement between the first band engagement portion and the second band engagement portion. | 06-24-2010 |
20100196774 | FUEL CELL - A fuel cell using metal separators in which reactive gas leakage is reliably suppressed without requiring excessive fastening force, while employing a simple structure. The present invention is a solid polymer unit fuel cell having a frame holding an MEA and metal separators, in which 1) the central part of a separator faces an electrode and has linear a channel formed therein, and the peripheral part of a separator is a flat structure having a manifold hole; 2) the frame holding an MEA has a sealant that is provided around the respective electrodes, is in contact with a rib at the boundary of the central part and peripheral part of a separator, and regulates the flow of reactive gas; and 3) contact surfaces of the sealant provided around an electrode and ribs at the boundary between the central part and peripheral part of a separator, are respectively inclined with respect to the stacking direction from the frame toward the separator. | 08-05-2010 |
20100248087 | METHOD FOR PRODUCING AN ELECTRODE-MEMBRANE-FRAME ASSEMBLY - In the method of the invention for producing an electrode-membrane-frame assembly, its principal part is formed by laying a first catalyst layer onto one of surfaces of an electrolyte membrane, arranging a first gas diffusion layer onto the surface of the first catalyst layer and inside the circumferential region of the electrolyte membrane, laying a second catalyst layer onto the other surface of the electrolyte membrane, and arranging a second gas diffusion layer onto the surface of the second catalyst layer and inside the circumferential region of the electrolyte membrane so as to make the position of the outer circumference of the second gas diffusion layer different from that of the outer circumference of the first gas diffusion layer. Then, in the state that an outer circumferential portion of either the first gas diffusion layer or the second gas diffusion layer, the portion being positioned outside a region of the first and second gas diffusion layers wherein the two layers are opposed to each other, is opposed to a portion of a flat region located inside the frame of a frame-form primary molded body, the circumferential region of the principal part is arranged on the flat region, and subsequently a secondary molded body is formed to cover the circumferential region of the electrolyte membrane with the second molded body together with the primary molded body, in order to prevent the polymer electrolyte membrane from being broken or deformed. | 09-30-2010 |
20100316916 | POLYMER ELECTROLYTE FUEL CELL SYSTEM - A polymer electrolyte fuel cell system of the present invention comprises cells | 12-16-2010 |
20110027681 | PRESERVATION ASSEMBLY OF POLYMER ELECTROLYTE FUEL CELL STACK - A preservation assembly of a polymer electrolyte fuel cell stack is provided. The assembly includes an uninstalled polymer electrolyte fuel cell stack and sealing units. The uninstalled polymer electrolyte fuel cell stack is provided with an oxidizing agent passage having an inlet and an outlet and extending through a cathode and a reducing agent passage having an inlet and an outlet and extending through an anode. The sealing units include sealing plugs or containers and are configured to seal the inlet and the outlet of the oxidizing agent passage within which an oxygen concentration has been decreased and to seal the inlet and the outlet of the reducing agent passage within which the oxygen concentration has been decreased. The uninstalled polymer electrolyte fuel cell stack is in a state before an assembled polymer electrolyte fuel cell stack is incorporated into a fuel cell system. | 02-03-2011 |
20110070520 | FUEL CELL AND METHOD FOR DISASSEMBLING FUEL CELL - A fuel cell ( | 03-24-2011 |
20110091786 | FUEL CELL STACK - Disclosed is a fuel cell stack which includes: a cell assembly formed of stacked unit cells, each composed of a membrane electrolyte assembly and separators which sandwich the membrane electrolyte assembly; a pair of collector plates A and B which sandwiches the cell assembly; a pair of end plates A and B which sandwiches the cell assembly and the collector plates; and an elastic member disposed between end plate A and collector plate A, wherein end plate A has a convexed portion and a concaved portion on a surface facing collector plate A, and the concaved portion of end plate A holds therein the elastic member, and a bottom surface of the concaved portion includes a second convexed portion and a second concaved portion. | 04-21-2011 |
20110165490 | POLYMER ELECTROLYTE FUEL CELL AND MANUFACTURING METHOD FOR ELECTRODE-MEMBRANE-FRAME ASSEMBLY - In a manufacturing method for an electrode-membrane-frame assembly in a fuel cell, a first frame member and an electrolyte membrane member are arranged in a first mold for injection molding such that the edge of the electrolyte membrane member is arranged on the first frame member, a second mold is arranged to form a resin flow passage for forming a second frame member which is in contact with the first frame member by interposing the electrolyte membrane member, and a part of the edge of the electrolyte membrane member is pressed and fixed to the first frame member by a presser member mounted on the second mold and a molding resin material is injected into the resin flow passage to form a second frame member. | 07-07-2011 |
20120231373 | FUEL CELL SEPARATOR AND FUEL CELL INCLUDING SAME - A fuel cell separator of the present invention is provided with a reactant gas flow region ( | 09-13-2012 |
20130011769 | FUEL CELL SEPARATOR AND FUEL CELL - A fuel cell separator having a turn portion of a serpentine-shaped reaction gas passage region. In the turn portion, a recessed portion is defined by an outer end of the turn portion and oblique boundaries between the recessed portion and a pair of passage groove group. In the turn portion, a plurality of protrusions, which vertically extend from a bottom face of the recessed portion and are arranged in an island form, are disposed such that one or more protrusions form a plurality of columns lined up and spaced apart from each other with a gap in a direction in which the outer end extends and one or more protrusions form a plurality of rows lined up and spaced apart from each other with a gap in a direction perpendicular to the direction in which the outer end extends. | 01-10-2013 |
20130017458 | FUEL CELL SYSTEM AND OPERATION METHOD THEREOFAANM Umeda; TakahiroAACI NaraAACO JPAAGP Umeda; Takahiro Nara JPAANM Kusakabe; HirokiAACI OsakaAACO JPAAGP Kusakabe; Hiroki Osaka JPAANM Yasumoto; EiichiAACI KyotoAACO JPAAGP Yasumoto; Eiichi Kyoto JPAANM Unoki; ShigeyukiAACI OsakaAACO JPAAGP Unoki; Shigeyuki Osaka JPAANM Sugawara; YasushiAACI OsakaAACO JPAAGP Sugawara; Yasushi Osaka JPAANM Shibata; SoichiAACI OsakaAACO JPAAGP Shibata; Soichi Osaka JPAANM Sakai; OsamuAACI OsakaAACO JPAAGP Sakai; Osamu Osaka JP - A controller ( | 01-17-2013 |
20130157164 | FUEL CELL - A close attachment region is provided on the outer side relative to an outer edge portion of a gas diffusion layer and on the inner side relative to the inner edge portion of a gasket as seen from the thickness direction of a polymer electrolyte membrane, such that separators and a frame member are closely attached to each other. Thus, it becomes possible to suppress an increase in the manufacturing cost and a reduction in the power generation performance, which is attributed to the impurity eluted from the gasket and flowing toward the gas diffusion layer. | 06-20-2013 |