[특허]Fuel cell stack with internal fuel manifold configuration

Bloom Energy Corporation

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특허 상세정보

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Fuel cell stack with internal fuel manifold configuration

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H01M-008/24
미국특허분류(USC)	429/458; 429/459
출원번호	US-0766711 (2010-04-23)
등록번호	US-8182956 (2012-05-22)
발명자 / 주소	Hickey, Darren Gottmann, Matthias
출원인 / 주소	Bloom Energy Corporation
대리인 / 주소	The Marbury Law Group, PLLC
인용정보	피인용 횟수 : 0 인용 특허 : 9

초록

A fuel cell stack includes a plurality of fuel cells, and a plurality of fuel delivery ports. Each of the plurality of fuel delivery ports is positioned on or in the fuel cell stack to provide fuel to a portion of the plurality fuel cells in each stack.

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1. A fuel cell stack, comprising: a plurality of plate shaped fuel cells which are internally manifolded on a fuel side and externally manifolded on an oxidizer side; andat least one fuel manifold located between adjacent fuel cells; anda plurality of risers, wherein the plurality of risers comprise channels which extend through the plurality of plate shaped fuels cells and respective interconnects located in the fuel cell stack;wherein the at least one manifold comprises: a plate shaped box comprising at least one fuel delivery opening in fluid communication with fuel cell fuel inlet riser openings and at least one fuel outlet opening in fluid communication with fuel cell fuel outlet riser openings, wherein the plurality of plate shaped fuel cells which are internally manifolded on the fuel side and externally manifolded on the oxidizer side surround the plate shaped box;a fuel delivery port comprising a fuel inlet conduit adapted to provide a fuel inlet stream into the fuel manifold, anda fuel outlet port comprising a fuel outlet conduit adapted to remove a fuel outlet stream from the fuel manifold; andwherein the plate shaped box comprises a separate component from the fuel cells. 2. The stack of claim 1, wherein the fuel inlet and outlet riser openings are positioned substantially perpendicularly to the fuel inlet and the fuel outlet conduits. 3. The stack of claim 2, wherein: the at least one fuel manifold comprises a first fuel delivery opening and a first fuel outlet opening located in a first major plate face of the plate shaped box, and a second fuel delivery opening and a second fuel outlet opening located in a second major plate face of the plate shaped box; andthe fuel inlet conduit and the fuel outlet conduit are connected to at least one edge of the plate shaped box. 4. The stack of claim 1, further comprising fuel inlet riser openings in the plurality of fuel cells having a cross sectional width of 0.15 to 0.5 inches. 5. The stack of claim 1, further comprising a plurality of fuel delivery ports, wherein each of the plurality of fuel delivery ports is connected to a respective one of a plurality of manifolds to provide fuel to a portion of the plurality fuel cells in each stack. 6. The stack of claim 1, wherein the plurality of plate shaped fuel cells are stacked in a vertical direction. 7. The stack of claim 6, wherein the plate shaped box comprises: a top wall, a bottom wall, two opposite end walls, and two opposite side walls, said end walls and said side walls extending upwardly from the bottom wall to the top wall,wherein said side walls and end walls comprise edge surfaces, andwherein said top and bottom walls comprise first and second major plate surfaces of the plate shaped box. 8. A fuel cell stack, comprising: a plurality of plate shaped fuel cells which are internally manifolded on a fuel side and externally manifolded on an oxidizer side; andat least one fuel manifold located between adjacent fuel cells;wherein the at least one manifold comprises: a plate shaped box comprising at least one fuel delivery opening in fluid communication with fuel cell fuel inlet riser openings and at least one fuel outlet opening in fluid communication with fuel cell fuel outlet riser openings;a fuel delivery port comprising a fuel inlet conduit adapted to provide a fuel inlet stream into the fuel manifold, anda fuel outlet port comprising a fuel outlet conduit adapted to remove a fuel outlet stream from the fuel manifold; anda plurality of risers, wherein the plurality of risers comprise channels which extend through the plurality of plate shaped fuels cells and respective interconnects located in the fuel cell stack;wherein the plate shaped box comprises a top wall, a bottom wall, two opposite end walls, and two opposite side walls, said end walls and said side walls extending upwardly from the bottom wall to the top wall, wherein said side walls and end walls comprise edge surfaces, wherein said top and bottom walls comprise first and second major plate surfaces of the plate shaped box,wherein at least one of the top and the bottom walls of the plate shaped box are located adjacent to the plurality of plate shaped fuel cells, andwherein the plurality of plate shaped fuel cells which are internally manifolded on the fuel side and externally manifolded on the oxidizer side surround the plate shaped box. 9. The stack of claim 8, wherein the fuel inlet and outlet riser openings are positioned substantially perpendicularly to the fuel inlet and the fuel outlet conduits. 10. The stack of claim 9, wherein: the at least one fuel manifold comprises a first fuel delivery opening and a first fuel outlet opening located in the first major plate surface of the plate shaped box, and a second fuel delivery opening and a second fuel outlet opening located in the second major plate surface of the plate shaped box; andthe fuel inlet conduit and the fuel outlet conduit are connected to at least one edge surface of the plate shaped box. 11. The stack of claim 8, further comprising fuel inlet riser openings in the plurality of fuel cells having a cross sectional width of 0.15 to 0.5 inches. 12. The stack of claim 8, further comprising a plurality of fuel delivery ports, wherein each of the plurality of fuel delivery ports is connected to a respective one of a plurality of manifolds to provide fuel to a portion of the plurality fuel cells in each stack. 13. The stack of claim 8, wherein the plurality of plate shaped fuel cells are stacked in a vertical direction. 14. The stack of claim 8, wherein the plate shaped box comprises a separate component from the fuel cells. 15. The stack of claim 1, wherein the plurality of plate shaped fuel cells are stacked vertically over and under the plate shaped box. 16. The stack of claim 8, wherein the plurality of plate shaped fuel cells are stacked vertically over and under the plate shaped box. 17. A fuel cell stack, comprising: a plurality of plate shaped fuel cells which are internally manifolded on a fuel side and externally manifolded on an oxidizer side; andat least one fuel manifold located between adjacent fuel cells; anda plurality of interconnects and a plurality of fuel flow channels,wherein each fuel flow channel is located between an anode electrode of each plate shaped fuel cell and a respective interconnect plate in the fuel cell stack, such that fuel flows from the fuel inlet riser opening on one side of the plate shaped fuel cell through each fuel flow channel into the fuel outlet riser opening on a second side of the plate shaped fuel cell;wherein the at least one manifold comprises: a plate shaped box comprising at least one fuel delivery opening in fluid communication with fuel cell fuel inlet riser openings and at least one fuel outlet opening in fluid communication with fuel cell fuel outlet riser openings, wherein the plurality of plate shaped fuel cells which are internally manifolded on the fuel side and externally manifolded on the oxidizer side surround the plate shaped box;a fuel delivery port comprising a fuel inlet conduit adapted to provide a fuel inlet stream into the fuel manifold, anda fuel outlet port comprising a fuel outlet conduit adapted to remove a fuel outlet stream from the fuel manifold; andwherein the plate shaped box comprises a separate component from the fuel cells. 18. A fuel cell stack, comprising: a plurality of plate shaped fuel cells which are internally manifolded on a fuel side and externally manifolded on an oxidizer side; andat least one fuel manifold located between adjacent fuel cells;wherein the at least one manifold comprises: a plate shaped box comprising at least one fuel delivery opening in fluid communication with fuel cell fuel inlet riser openings and at least one fuel outlet opening in fluid communication with fuel cell fuel outlet riser openings;a fuel delivery port comprising a fuel inlet conduit adapted to provide a fuel inlet stream into the fuel manifold, anda fuel outlet port comprising a fuel outlet conduit adapted to remove a fuel outlet stream from the fuel manifold; anda plurality of interconnects and a plurality of fuel flow channels,wherein each fuel flow channel is located between an anode electrode of each plate shaped fuel cell and a respective interconnect plate in the fuel cell stack, such that fuel flows from the fuel inlet riser opening on one side of the plate shaped fuel cell through each fuel flow channel into the fuel outlet riser opening on a second side of the plate shaped fuel cell;wherein the plate shaped box comprises a top wall, a bottom wall, two opposite end walls, and two opposite side walls, said end walls and said side walls extending upwardly from the bottom wall to the top wall,wherein said side walls and end walls comprise edge surfaces, wherein said top and bottom walls comprise first and second major plate surfaces of the plate shaped box,wherein at least one of the top and the bottom walls of the plate shaped box are located adjacent to the plurality of plate shaped fuel cells, andwherein the plurality of plate shaped fuel cells which are internally manifolded on the fuel side and externally manifolded on the oxidizer side surround the plate shaped box.

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Fuel cell stack with internal fuel manifold configuration

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