Abstract:
PROBLEM TO BE SOLVED: To provide the seal structure of a fuel cell capable of preventing drop in power generation efficiency. SOLUTION: The seal structure of the fuel cell includes a separator 12 formed on the outside of a reaction passage region for supplying reaction gas to a membrane electrode assembly and having a seal groove 123a including a seal groove bottom part 123a-1 and a seal groove inclined wall part 123a-2; and a seal 14 including a main seal part 141 coming in contact with the seal groove bottom part 123a-1 and preventing leak of reaction gas to the outside and a sub-seal part 142 coming in contact with the seal groove inclined wall part 123a-2 and being made to bring up closer to the main seal part by the seal groove inclined wall part 123a-2. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To reduce the number of components and to reduce cost.SOLUTION: An air cell B1 houses a positive electrode material 12 and a negative electrode material 20 in a frame body 40 so as to compart and form an electrolyte layer 30 therebetween, is used by being mutually stacked as a battery pack, the negative electrode material 20 is made to be in contact with a positive electrode material 12 of another air cell B1, and an air flow passage 23 is integrally formed at a contact surface 21e between the negative electrode material 20 and the positive electrode material 12 of another air cell B1.
Abstract:
PROBLEM TO BE SOLVED: To provide seal structure for a fuel cell suppressing ununiformity in forming of seal by a CIPG method and to provide the manufacturing method of the seal structure. SOLUTION: In the seal structure of the fuel cell formed by a cured impression method, for preventing leakage of fuel gas, oxidant gas , and a coolant supplied to a solid polymer electrolyte fuel cell to the outside and mixing of them, a seal 14 is formed by bringing a sealant applied to one member 16 into contact with a seal portion of superimposed two members 16, 17, and heat-curing them. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a separator for a fuel cell suitable for ensuring corrosion resistance of a metallic separator and reducing contact resistance, and to provide a fuel cell stack and its manufacturing method. SOLUTION: An electrolyte membrane electrode assembly constituted by interposing an electrolyte membrane 3 between a pair of electrode catalyst layers 4 is interposed through gas diffusion layers 5 from the both sides between metallic separators 6 to constitute a fuel cell cell 2, the separators 6 of adjoined fuel cell cells 2 are contacted with each other back surface, a passage 8 through which a temperature control medium flows is formed between the separators 6. The separators 6A, 6B are welded (10) through a non-permeable material 15 preventing penetration/permeation against fuel cell gas and the temperature control medium in at least a contact portion 9 surrounding the passage 8 through which the temperature control medium flows. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an MEA provided with an edge seal, having a simple structure composed by using inexpensive materials, and having a small number of components and being improved in durability. SOLUTION: This membrane-electrode assembly includes an electrolyte membrane 13; a cathode catalyst layer 15b arranged on one side of the electrolyte membrane; an anode catalyst layer 15a arranged on the other side of the electrolyte membrane; and a gasket structure 21 having integrated gasket layer arranged at least in a part of circumferences of ends of both the catalyst layers. The membrane-electrode assembly has gas diffusion layers 17a, b formed on both surfaces of the membrane; the areas of both the gas diffusion layers formed on both the surfaces of the membrane are different from each other; and at least a circumferential part of the membrane on the side, where the area of the gas diffusion layer is smaller, is jointed to the gasket structure. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a structure improving precision in assembly between separators and improving rigidity of the separator without enlarging a fuel cell stack in a fuel cell. SOLUTION: The fuel cell has a single cell 10 composed from a solid polyelectrolyte membrane 11a and a membrane electrode assembly 11 made of an anode 11b and a cathode 11c facing each other through this solid polyelectrolyte membrane, an anode side separator 12 brought into contact with the anode and supplying fuel gas to the anode, and a cathode side separator 13 brought into contact with the cathode and supplying oxidized gas to the cathode. The fuel cell is composed by laminating a specified number of the single cells 10. The fuel cell separator has flanges 12d and 13d formed along outer edges of each of the anode side separator 12 and the cathode side separator 13. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a separator for a fuel cell, capable of suppressing variations, when assembling it. SOLUTION: This separator is equipped with a first rib 14e to demarcate a gas passage for supplying fuel gas or oxidizer gas to each electrode of an electrolyte membrane/electrode assembly, and a second rib 14f formed along an outer fringe. In this fuel cell, equipped with the separator 14 in which a liquid seal 19 for preventing the gas between gas passages from mixing and leaking to the outside and for bonding the separators each other is applied to a space formed by using the ribs, and the space where the liquid seal is applied becomes a closed space by adhesion of the separators each other, the separator is equipped with an air transmitting part 14g to open the closed space in at least one of the first rib and the second rib; and air remaining in this closed space is discharged from the air transmitting part. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a fuel cell system for a mobile body which can be operated efficiently. SOLUTION: An oxidizing gas passage 15 is formed so that a temperature of oxidizing gas flowing in the oxidizing gas passage 15 of a fuel cell stack 2 is increased by a fluid flowing in an adjacent cooling water passage 17, and the oxidizing gas is discharged from an outlet. Discharged gas from the oxidizing gas passage 15 is supplied to a humidifier 7 for humidifying air for reforming supplied to a reformer 1, and the air for reforming is humidified by the discharged gas. COPYRIGHT: (C)2004,JPO