Ngk Spark Plug Company, Limited

Morimura Sofc Technology Co., Ltd.

Tetsuya Morikawa

Nobuyuki Hotta

Takafumi Shichida

Ryoji Tanimura

Shunsuke Tsuga

Atsushi Mizuno

Hiroshi Sumi

Hayato Katsuda

A method of manufacturing a solid oxide fuel cell stack, including alternately disposing a plurality of single fuel cells, and a plurality of interconnectors disposed alternately and holding the alternately disposed plurality of single fuel cells and plurality of interconnectors between a pair of end members, forming a space between a first end member and a first interconnector, disposing a junction member composed of an elastic member and an electrically conductive member in the space, and urging a portion of an electrically conductive member and another portion of the electrically member against the first end member and the first interconnector so that a total thickness of the portion of the electrically conductive member, the another portion of the electrically conductive member, and the elastic member prior to being disposed in the space between the first end member and the first interconnector is greater than a height of the space.

Solid oxide fuel cell stack

A flat-plate-type fuel cell stack including a plurality of plate-shaped stacked fuel cells each including an electrolyte layer, an anode, and a cathode. The fuel cell stack includes at least one of a fuel manifold communicating with a space adjacent to the anode and an oxidant manifold communicating with a space adjacent to the cathode. A compression seal member and a glass seal member are disposed around the at least one manifold.

Fuel cell stack and method of producing the same

A fuel cell electricity generation unit including a single cell; first and second interconnectors; a separator; a metal frame member disposed between the separator and the first interconnector; and a gas sealing member having a contact portion in contact with the surfaces of the separator and the second interconnector. The unit has a contact overlap region overlapping with the contact portion in a first direction, and each of the gas sealing member, the separator, the frame member, the first interconnector, and the second interconnector is present in the contact overlap region. At least one of a first weld portion sealing between the separator and the frame member and a second weld portion sealing between the frame member and the first interconnector is formed at a position whose distance from the periphery of the single cell is greater than the distance between the periphery and the contact overlap region.

Fuel-cell power generation unit and fuel-cell stack

A fuel gas supply path in a fuel cell stack includes in series a first path, a second path, and a third path. In the second path, two inlets of the fuel gas in each of power generating cells included in the second path are located at a first position PA and a second position PB, and the position of one outlet of the fuel gas in each power generating cell is located at a third position PC. In the third path, an inlet of the fuel gas in each of power generating cells included in the third path is located at a position coinciding with the third position PC when the power generating cells are viewed in the stacking direction, and an outlet of the fuel gas in each power generating cell is located at a position between the first position PA and the second position PB.

Fuel cell stack

A fuel cell stack according to one aspect of the present invention has a plurality of fuel cells stacked together and a plurality of manifolds passing through the fuel cells in a stacking direction thereof so as to allow at least one of the fuel gas and the oxidant gas to flow therethrough. The manifolds include cold gas manifolds adapted to introduce the fuel gas or oxidant gas from the outside into the fuel cell stack, hot gas manifolds adapted to discharge the fuel gas or oxidant gas from the fuel cells, and a heat-exchanged gas manifold adapted to feed the fuel gas or oxidant gas that has been heat-exchanged in a heat exchange part. Every one of the cold gas manifolds is adjacent to any of the hot gas manifolds. One of the hot gas manifolds is non-adjacent to any other one of the hot gas manifolds.

Fuel cell stack and fuel cell module

A fuel cell stack () includes a plurality of stacked power generation cells (), a heat exchange unit () provided between adjacent two of the power generation cells, a fuel gas supply path arranged to supply the power generation cells with a fuel gas, and an oxidant gas supply path () arranged to supply the power generation cells with an oxidant gas, wherein the fuel gas supply path includes in series a first path () passing through the heat exchange unit (), a second path () passing through some of the plurality of power generation cells () in parallel, and a third path () passing through the other power generation cells in parallel.

A fuel cell () includes interconnectors (hereinafter, IC) (), a cell body () disposed between the ICs and including an air electrode () and a fuel electrode () on both surfaces of an electrolyte (), and current collecting members () disposed between at least one of the electrodes () and the ICs. The current collecting members () include connector contact portions () in contact with the IC (), cell body contact portions () in contact with the cell body (), and connecting portions () that are bent approximately 180 degrees and connect both the contact portions. The connector contact portions include asperities () on outside surfaces of the connector contact portions on the side where the connector contact portions are in contact with the ICand a spacer () is disposed between the connector contact portions and the cell body contact portions.

Fuel cell, and fuel cell stack

A fuel cell () includes interconnectors (hereinafter, IC) (), a cell body () disposed between the ICs and including an air electrode () and a fuel electrode () on both surfaces of an electrolyte (), and current collecting members () disposed between at least one of the electrodes () and the ICs. The current collecting members () include connector contact portions () in contact with the IC (), cell body contact portions () in contact with the cell body, and connecting portions () that are bent approximately 180 degrees and connect both the contact portions, the connector contact portions, the cell body contact portions, and the connecting portions being formed in line. The current collecting members () include asperities () on inside surfaces oriented inward, and a spacer () is disposed between the connector contact portions and the cell body contact portions.

Growing community of inventors

Ichinomiya, Japan

Tetsuya Morikawa