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1
US20050130018A1
Publication/Patent Number: US20050130018A1
Publication date: 2005-06-16
Application number: 10/736,480
Filing date: 2003-12-15
Abstract: Fuel cell diffusion layers, and related systems and methods are disclosed.
2
US20050079400A1
Publication/Patent Number: US20050079400A1
Publication date: 2005-04-14
Application number: 10/928,807
Filing date: 2004-08-27
Abstract: A seal member is formed integrally on surfaces of a metal separator of a fuel cell. The seal member includes an outer seal and an inner seal provided on a surface of the metal separator. A plurality of closure seals are formed integrally with an inner edge of the inner seal. The closure seals close a space between the inner seal and a protrusion forming a fuel gas flow field. A seal member is formed integrally on surfaces of a metal separator of a fuel cell. The seal member includes an outer seal and an inner seal provided on a surface of the metal separator. A plurality of closure seals are formed integrally with an inner edge of the inner seal. The ...more ...less
3
US20050064284A1
Publication/Patent Number: US20050064284A1
Publication date: 2005-03-24
Application number: 10/944,776
Filing date: 2004-09-21
Abstract: In an alkaline dry battery, a sealant comprising grease with a worked penetration of from 175 to 475 is disposed between an opening end of a metal case and a peripheral end of a sealing body. This sealant, comprising the above grease, differs from a conventional sealant in being usable without using an organic solvent. This sealant is also capable of preventing creeping of an electrolyte between the metal case and the sealing body. In an alkaline dry battery, a sealant comprising grease with a worked penetration of from 175 to 475 is disposed between an opening end of a metal case and a peripheral end of a sealing body. This sealant, comprising the above grease, differs from a conventional sealant in being ...more ...less
4
US20050089745A1
Publication/Patent Number: US20050089745A1
Publication date: 2005-04-28
Application number: 10/626,168
Filing date: 2003-07-23
Abstract: The present invention provides a fuel cell comprising a pair of separators sandwiching outsides of a membrane electrode assembly composed of a pair of electrodes provided on both sides of a solid polymer electrolyte membrane, an outer seal member sandwiched by a pair of separators at a position surrounding an outer periphery of the membrane electrode assembly, an inner seal member sandwiched by one of the pair of separators and an outer periphery of the electrolyte membrane, and a backing member opposing to the inner seal member interposing the electrolyte membrane, wherein steps are formed at contact surfaces of the inner seal member and the outer seal member on one of the pair of separators. The present invention provides a fuel cell comprising a pair of separators sandwiching outsides of a membrane electrode assembly composed of a pair of electrodes provided on both sides of a solid polymer electrolyte membrane, an outer seal member sandwiched by a pair of ...more ...less
5
US20050244710A1
Publication/Patent Number: US20050244710A1
Publication date: 2005-11-03
Application number: 10/905,717
Filing date: 2005-01-18
Abstract: A sealing ring assembly and an improved method for mounting a sealing ring into an electrochemical cell used for Electrochemical Capacitance Voltage (ECV) profiling measurements. The ring is located in a holder having at least one secondary bore providing fluid communication between a forward face of the holder and the central bore of the ring, directed parallel to but tangentially offset relative to the inner wall of the central bore so as to impart a degree of rotational flow to electrolyte entering the sealing ring through the or each secondary bore which effectively removes gas bubbles and refreshes the electrolyte. The holder facilitates ring removal with a much reduced risk of damage to the delicate sealing surface. A sealing ring assembly and an improved method for mounting a sealing ring into an electrochemical cell used for Electrochemical Capacitance Voltage (ECV) profiling measurements. The ring is located in a holder having at least one secondary bore providing fluid communication ...more ...less
6
US20050181260A1
Publication/Patent Number: US20050181260A1
Publication date: 2005-08-18
Application number: 10/518,877
Filing date: 2003-06-18
Abstract: An electrically conductive flow field separator plate is disclosed for use in a proton exchange membrane fuel cell. The plate comprises a frame portion, a central planar portion within the frame and a flow field formed in a surface of the central planar portion. The frame portion is elastomeric so as to form a seal with adjacent fuel cell components thereby eliminating the use of separate sealing elements. The frame and the central planar portion are of unitary construction and comprise from about 10 wt. % to about 50 wt. % of elastomer and from about 50 wt. % to about 90 wt. % of conductive filler. An electrically conductive flow field separator plate is disclosed for use in a proton exchange membrane fuel cell. The plate comprises a frame portion, a central planar portion within the frame and a flow field formed in a surface of the central planar portion. The frame ...more ...less
7
US20050271938A1
Publication/Patent Number: US20050271938A1
Publication date: 2005-12-08
Application number: 11/176,400
Filing date: 2005-07-08
Abstract: In a flat non-aqueous electrolyte secondary cell comprising an electricity-generating element including at least a cathode, a separator and an anode and a non-aqueous electrolyte in the inside of a cathode case, a plurality of electrode units each consisting of the cathode and the anode opposite to each another via the separator are laminated to form an electrode group, or an electrode unit in a sheet form consisting of the cathode and the anode opposite to each another via the separator is wound to form an electrode group, or a sheet-shape cathode is wrapped with the separator except for a part contacting at inner face of cathode case and a sheet-shaped anode is set on the sheet-shaped cathode in a right angled position each other and then these cathode and anode are bent alternately to form an electrode group, and the total sum of the areas of the opposing cathode and anode in this electrode group is larger than the area of the opening of an insulating gasket in a sealed portion in the cathode case or than the area of an opening in a sealed plate in a sealed portion in the cathode case, whereby the discharge capacity upon heavy-loading discharge is significantly increased as compared with the conventional cells. Accordingly, while the size of the cell is small, the discharge capacity is increased as described above, and thus it is possible to provide a highly utilizable flat non-aqueous electrolyte secondary cell. Further, in said flat non-aqueous electrolyte secondary cell, problems which may be caused by the increased discharge capacity in the cell can be solved by improving the solvent and supporting electrolyte for the electrolyte or by various improvements in the cathode and anode cases. In a flat non-aqueous electrolyte secondary cell comprising an electricity-generating element including at least a cathode, a separator and an anode and a non-aqueous electrolyte in the inside of a cathode case, a plurality of electrode units each consisting of the cathode and ...more ...less
8
US20050255380A1
Publication/Patent Number: US20050255380A1
Publication date: 2005-11-17
Application number: 11/152,443
Filing date: 2005-06-13
Abstract: A hermetic seal that is compatible with lithium-ion electrolyte in lithium batteries is formed in feedthroughs by compression, chemical bonding, and mechanical bonding between the metal pin and a sealing glass, such as Cabal-12. The pin is alternately coated with a metal or a metal oxide to enhance compatibility with the lithium battery environment. The pin surface is deformed to enhance bonding with the glass seal. Mechanical bonds are also achieved by placing the pin/glass seal interface in compression by a compression bushing. A hermetic seal that is compatible with lithium-ion electrolyte in lithium batteries is formed in feedthroughs by compression, chemical bonding, and mechanical bonding between the metal pin and a sealing glass, such as Cabal-12. The pin is alternately coated with a metal or a ...more ...less
9
US20050255381A1
Publication/Patent Number: US20050255381A1
Publication date: 2005-11-17
Application number: 11/114,890
Filing date: 2005-04-27
Abstract: The present invention is a secondary battery, comprising an upper housing, an upper accommodated tank, a main component of battery, a lower accommodated tank, a lower housing each is laminated orderly by layers to form a sealed structure of the secondary battery. The upper accommodated tank is made of a printed circuit board (PCB) material and is used to accommodate electrolyzed material. The lower accommodated tank is made of printed circuit board material and used to accommodate the electrolyzed material. The main component of the secondary battery is inserted between the upper accommodated tank and the lower accommodated tank. The upper tank made of a printed circuit board material is used to cover the upper accommodated tank closely, while the lower tank made of a printed circuit board material is used to cover the lower accommodated tank closely. The present invention is a secondary battery, comprising an upper housing, an upper accommodated tank, a main component of battery, a lower accommodated tank, a lower housing each is laminated orderly by layers to form a sealed structure of the secondary battery. The upper ...more ...less
10
US20050214620A1
Publication/Patent Number: US20050214620A1
Publication date: 2005-09-29
Application number: 11/028,285
Filing date: 2004-12-30
Abstract: A composite gasket for fuel cell stack comprises two rows of beads and a support which can improve mountability and sealing property and reduce the assembly pressure by using materials having low hardness with reduced volume. This invention also relates to a structure for the assembly of the composite gasket. A composite gasket for fuel cell stack comprises two rows of beads and a support which can improve mountability and sealing property and reduce the assembly pressure by using materials having low hardness with reduced volume. This invention also relates to a structure for the ...more ...less
11
US20050214641A1
Publication/Patent Number: US20050214641A1
Publication date: 2005-09-29
Application number: 11/087,698
Filing date: 2005-03-24
Inventor: Kim, Yong-sam  
Assignee: Kim, Yong-Sam
Abstract: A cap assembly for a secondary battery maybe constructed with a cap cover, a tab plate arranged along one side of the cap cover, and a vent plate arranged between the cap cover and the tab plate. The tab plate has a current breaking portion configured to be torn by a predetermined force, and the vent plate has a vent dedicated to be altered, or broken, by a predetermined force. The current breaking portion is attachedly fixed to the vent, and the center point of the current breaking portion and the point where the current breaking portion is attached to the vent are not coincident. A cap assembly for a secondary battery maybe constructed with a cap cover, a tab plate arranged along one side of the cap cover, and a vent plate arranged between the cap cover and the tab plate. The tab plate has a current breaking portion configured to be torn by a ...more ...less
12
US20050164079A1
Publication/Patent Number: US20050164079A1
Publication date: 2005-07-28
Application number: 11/046,339
Filing date: 2005-01-27
Inventor: Kim, Bong  
Assignee: Kim, Bong
Abstract: A can type secondary battery includes an electrode assembly having a positive electrode plate, a negative electrode plate, and a separator interposed between the positive electrode plate and the negative electrode plate, a can for receiving the electrode assembly therein, and a cap assembly coupled to an opening section of the can. A cap plate is formed with an electrolyte injection hole and a soft aluminum plug welded to the electrolyte injection hole so as to seal the electrolyte injection hole. A can type secondary battery includes an electrode assembly having a positive electrode plate, a negative electrode plate, and a separator interposed between the positive electrode plate and the negative electrode plate, a can for receiving the electrode assembly therein, and a ...more ...less
13
US20050158622A1
Publication/Patent Number: US20050158622A1
Publication date: 2005-07-21
Application number: 11/034,715
Filing date: 2005-01-14
Abstract: A film-covered electric device has an electric device element and casing films. The casing films include a sealing area formed by thermally fusing the facing surfaces of the casing films together around the periphery of the electric device element, an electric device element receiving part encapsulating the electric device element inside the sealing area, and unfused portions formed in the shape of cove communicating with the electric device element receiving part. The casing films further include a stress concentrating portion touching the unfused portions for concentrating thereon the peeling stress of the casing films generated at the sealing area by the expansion of the electric device element receiving part, and a pressure releasing part is formed in the stress concentrating portion. A film-covered electric device has an electric device element and casing films. The casing films include a sealing area formed by thermally fusing the facing surfaces of the casing films together around the periphery of the electric device element, an electric device element ...more ...less
14
US20050175882A1
Publication/Patent Number: US20050175882A1
Publication date: 2005-08-11
Application number: 10/985,085
Filing date: 2004-11-04
Abstract: In a fuel cell assembly (1) comprising an electrolyte layer (2) having a frame (21) and an electrolyte (22) retained in the frame, a pair of separators (5, 6) are bonded to the electrolyte layer by that a metallic material (27) is deposited on one of the frame and each separator and a laser beam is irradiated onto the metallic material through the frame or the separator in a state that the frame and each separator contact each other whereby the metallic material forms a eutectic with the other of the frame and each separator. In a fuel cell assembly (1) comprising an electrolyte layer (2) having a frame (21) and an electrolyte (22) retained in the frame, a pair of separators (5, 6) are bonded to the electrolyte layer by that a metallic material (27) is deposited on one of the frame and each separator ...more ...less
15
US20050287435A1
Publication/Patent Number: US20050287435A1
Publication date: 2005-12-29
Application number: 11/154,567
Filing date: 2005-06-17
Inventor: Kim, Yong-sam  
Assignee: Kim, Yong-Sam
Abstract: A secondary battery includes: an electrode assembly having a winding including a positive electrode, a negative electrode, and a separator interposed therebetween, the winding centered around a winding axis; a case adapted to receive the electrode assembly, the winding axis being parallel to a longitudinal axis of the case; and first and second cap assemblies adapted to respectively seal opposite ends of the case, the first and second cap assemblies respectively having positive and negative electrode terminals electrically coupled to the electrode assembly. The electrode assembly is adapted to respectively be connected to the first and second cap assemblies by parts of the electrode assembly not coated with active materials, the parts of the electrode assembly not coated with active materials being arranged at opposite ends of the electrode assembly perpendicular to the winding axis. A secondary battery includes: an electrode assembly having a winding including a positive electrode, a negative electrode, and a separator interposed therebetween, the winding centered around a winding axis; a case adapted to receive the electrode assembly, the winding axis ...more ...less
16
US20050031933A1
Publication/Patent Number: US20050031933A1
Publication date: 2005-02-10
Application number: 10/635,123
Filing date: 2003-08-06
Assignee: