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公开(公告)号：US11145881B2
公开(公告)日：2021-10-12
申请号：US16138803
申请日：2018-09-21
IPC分类号： H01M8/04291 , H01M8/04119 , H01M8/0258
摘要： A gas flow passage formation plate includes a plurality of projections arranged in a first direction and a second direction. The projections project toward a membrane electrode assembly. The gas flow passage formation plate further includes a gas flow passage, a water flow passage, and a plurality of openings. The gas flow passage is formed by a portion of the gas flow passage formation plate at a side opposing the membrane electrode assembly including regions between two adjacent projections. The water flow passage is formed by a portion of the gas flow passage formation plate at a side opposing a partition plate including the inside of the projections. The openings are each formed in a side wall of the projection connecting inside and outside of the projection. Each opening is arranged at only one location in one projection.
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公开(公告)号：US12068510B2
公开(公告)日：2024-08-20
申请号：US17627061
申请日：2020-03-12
IPC分类号： H01M8/00 , H01M8/026 , H01M8/0273 , H01M8/0265 , H01M8/0267
CPC分类号： H01M8/026 , H01M8/0273 , H01M8/0265 , H01M8/0267
摘要： A fuel cell stack includes stacked cells, each including a sheet-shaped power generation portion, two separators, a gas passage defining plate that includes a gas passage portion through which reactant gas flows, and a frame member that includes a supply port and a discharge port. The gas passage portion includes opposing portions extended in a flow direction of the reactant gas and arranged in parallel in an orthogonal direction. A main passage is defined between each opposing portion and the power generation portion. The gas passage portion includes a first passage portion adjacent to the supply port in the flow direction and a second passage portion adjacent to the first passage portion in the orthogonal direction. The main passages of the second passage portion each have a larger cross-sectional flow area than the main passages of the first passage portion.
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公开(公告)号：US12027730B2
公开(公告)日：2024-07-02
申请号：US17627078
申请日：2020-03-12
IPC分类号： H01M8/0265 , H01M8/2465
CPC分类号： H01M8/0265 , H01M8/2465
摘要： A fuel cell stack includes stacked cells, each including a sheet-shaped power generation portion, two separators, a gas passage defining plate that includes a gas passage portion through which reactant gas flows, and a frame member that includes a supply port and a discharge port. The gas passage portion includes opposing portions extended in a flow direction of the reactant gas and arranged in parallel in an orthogonal direction and wavy portions each having a wavy cross-sectional shape orthogonal to the orthogonal direction. The gas passage portion includes a first passage portion adjacent to the supply port in the flow direction and a second passage portion adjacent to the first passage portion in the orthogonal direction. The connection passages of the second passage portion each have a larger cross-sectional flow area than the connection passages of the first passage portion.
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公开(公告)号：US10181607B2
公开(公告)日：2019-01-15
申请号：US15660085
申请日：2017-07-26
发明人： Kazunori Shibata , Hiroya Nakaji , Hiroki Okabe , Yoshinori Shinozaki , Kousuke Kawajiri , Satoshi Futami , Takamasa Kanie
IPC分类号： H01M8/0254 , H01M8/04119 , H01M8/0202 , H01M8/026 , H01M8/1004 , H01M8/0258 , H01M8/0206 , H01M8/1018
摘要： A gas flow passage-forming member is disposed between a membrane electrode and gas diffusion layer assembly and a separator of a fuel cell, and the gas flow passage-forming member is configured to form a gas flow passage. The gas flow passage-forming member has a corrugated shape such that groove portions and ridge portions are provided on each of a front side and a back side of the gas flow passage-forming member. The groove portions each serve as the gas flow passage. The gas flow passage-forming member has communication holes providing communication between the front side and the back side, and the communication holes are provided in a region downstream of an upstream region in a gas flow direction. The upstream region is a non-communication region with no communication hole.
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