| Patent application number | Description | Published |
|---|
| 20090053571 | FUEL CELL STACK AND METHOD FOR MAKING THE SAME - A fuel cell stack includes a membrane electrode assembly including an electrolyte membrane and electrode catalyst layers sandwiching the electrolyte membrane; metal separators that define gas channels, the metal separators being respectively disposed at both surfaces of the membrane electrode assembly; a current collector from which electromotive force is derived, the current collector being in contact with at least one of the metal separators; and joining parts that join the metal separator to the current collector at portions where the metal separator contacts the current collector. | 02-26-2009 |
| 20090092872 | FUEL CELL STACK AND METHOD OF PRODUCING ITS SEPARATOR PLATES - A cell of a fuel cell includes a membrane electrode assembly, and metal first and second separators which sandwich the membrane electrode assembly to form gas flow paths disposed on each side of the membrane electrode assembly. A back surface of the first separator and a back surface of the second separator, the first separator and the second separator being included in adjacent cells, are in contact with each other, thereby forming a temperature-control medium flow path between the first separator and the second separator. In the first separator and the second separator, corrosion-resistant coating layers are provided only on reaction-side surfaces of the first separator and the second separator, the reaction-side surfaces facing the membrane electrode assembly, and portions where the back surface of the first separator is in contact with the back surface of the second separator are joined by welded portions. | 04-09-2009 |
| 20090117431 | FUEL CELL, FUEL CELL STACK AND METHOD OF MANUFACTURING THE SAME - A fuel cell stack and method of manufacturing a fuel cell stack having a highly anti-corrosive property. The fuel cell stack includes a plurality of cells constructed by interposing an electrolyte membrane electrode assembly between the first and second separators. The first and second separators define gas passages on from both sides of the electrolyte membrane electrode assembly, and a gas manifold is in fluid communication with the gas flow passages through the plurality of stacked cells. Manifold openings for defining the gas manifold are formed in the first and second separators, and the opening areas of the manifold openings are differently sized. The manifold opening inner peripheral end of the first separator has a larger opening area, and is welded to the second separator to form a manifold welding portion. | 05-07-2009 |
| 20110003232 | SEAL STRUCTURE ADOPTED IN MEMBRANE ELECTRODE ASSEMBLY FOR FUEL CELL - First reinforcing members, having a low modulus of elasticity, are disposed between an electrolyte membrane and second reinforcing members having a high modulus of elasticity, so as not to allow the electrolyte membrane to readily rub against the first reinforcing members as the electrolyte membrane expands and shrinks and to ultimately prevent degradation of the electrolyte membrane. | 01-06-2011 |
| 20110008690 | FUEL CELL STACK - A fuel cell stack is provided having a plurality of unit cells stacked in a horizontal direction. Each unit cell includes an electrolyte membrane having two surfaces and a peripheral edge, electrodes provided on both surfaces of the electrolyte membrane, frame-shaped members provided on both surfaces of the electrolyte membrane adjacent to the respective electrodes and adjacent the peripheral edge of the electrolyte membrane, separators provided on the electrodes and the frame-shaped members and having a reactant gas passage for supplying a reactant gas to each of the electrodes, and a manifold formed in the stacking direction in fluid communication with the reactant gas passage. The manifold includes a horizontal edge portion in fluid communication with the reactant gas passage. | 01-13-2011 |
| 20110183166 | BIPOLAR SECONDARY BATTERY, BATTERY PACK, AND VEHICLE EQUIPPED WITH THE SAME - A bipolar secondary battery is provided with an electric power generating unit, a pair of terminal plates. The electric power generating unit includes a plurality of bipolar electrodes stacked on one another with an electrolyte layer disposed between the bipolar electrodes and separating the bipolar electrodes. Each of the bipolar electrodes includes a collector with a positive electrode active material layer formed on a first side surface of the collector, and a negative electrode active material layer formed on a second side surface of the collector. The first terminal plate is connected to a first stacking direction facing end of the electric power generating unit. The second terminal plate is connected to a second stacking direction facing end of the electric power generating unit. At least one of the terminal plates includes an electric current suppressing device that suppresses an electric current occurring when an internal short circuit occurs in the electric power generating unit. | 07-28-2011 |
| 20110294007 | BIPOLAR SECONDARY BATTERY AND METHOD FOR PRODUCING THE SAME - A bipolar secondary battery has a battery element that includes first and second bipolar electrodes each having a collector disposed with a conductive resin layer containing a first resin as a base material and positive and negative electrode active material layers formed on opposite sides of the collector and a separator containing a second resin as a base material, arranged between the first and second bipolar electrodes and retaining an electrolyte material to form an electrolyte layer. The positive electrode active material layer of the first bipolar electrode, the electrolyte layer and the negative electrode active material layer of the second bipolar electrode constitute a unit cell. A melting point of the first resin is lower than or equal to a melting point of the second resin. Outer peripheries of the collectors of the first and second bipolar electrodes and an outer periphery of the separator are fused together to thereby seal an outer peripheral portion of the unit cell. | 12-01-2011 |
| 20120070715 | BIPOLAR SECONDARY BATTERY - A bipolar secondary battery includes a power generating element in which a bipolar electrode and an electrolyte layer are stacked. The bipolar electrode includes a positive-electrode active material layer formed on one surface of a current collector and a negative-electrode active material layer formed on the opposing surface of the current collector. Peripheral edges of the bipolar electrode and electrolyte layer are bonded through a seal. Edges of the positive-electrode active material layer and the negative-electrode active material layer on opposite surfaces of a respective current collector are offset from each other. The edge of a seal portion facing an inner edge of the edges of the positive-electrode active material layer and the negative-electrode active material layer is positioned inside an outer edge of the edges of the positive-electrode active material layer and the negative-electrode active material layer. | 03-22-2012 |
