[특허]Flow field

Flow field 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H01M-002/18
출원번호	US-0336873 (2008-12-17)
등록번호	US-8192856 (2012-06-05)
발명자 / 주소	Ferguson, Dennis E.
출원인 / 주소	3M Innovative Properties Company
대리인 / 주소	Allen, Gregory D.
인용정보	피인용 횟수 : 0 인용 특허 : 39

초록 ▼

An article bearing a flow field such as a distribution plate for use in a fuel cell is provided. The active portion of the article, i.e., the portion of the article bearing the flow field, comprises at least two subsections; a first central subsection and a second peripheral subsection; wherein channels within the first subsection have a cross-sectional profile that differs from that of channels within the second subsection. Typically, channels of the first subsection have lesser depth, greater draft or greater ratio of draft to depth. In addition, an article bearing a flow field is provided where the flow field comprises at least two channel segments which differ in draft. In addition, an article bearing a flow field is provided where the flow field comprises at least one channel segment comprising first and second channel walls which differ in draft.

대표청구항 ▼

1. A fuel cell comprising a membrane electrode assembly and an article comprising a flow field which comprises one or more channels, said article comprising an active portion which is the portion of said article bearing said flow field, wherein said active portion has a geometric center and an outer periphery, wherein said active portion comprises a first subsection including said geometric center and excluding said outer periphery, wherein said active portion comprises a second subsection excluding said geometric center and including said outer periphery, wherein channels within said first subsection have a first cross-sectional profile, wherein channels within said second subsection have a second cross-sectional profile, and wherein said first cross-sectional profile differs from said second cross-sectional profile. 2. The fuel cell of claim 1 wherein said active portion additionally comprises a third subsection excluding both said geometric center and said outer periphery, wherein channels within said third subsection have a third cross-sectional profile, and wherein said third cross-sectional profile differs from both said first and said second cross-sectional profiles. 3. The fuel cell according to claim 1 wherein said first cross-sectional profile differs from said second cross-sectional profile in at least one manner selected from the group consisting of: lesser depth, greater draft and greater ratio of draft to depth. 4. The fuel cell according to claim 2 wherein said first cross-sectional profile differs from said third cross-sectional profile in at least one manner selected from the group consisting of: lesser depth, greater draft and greater ratio of draft to depth and wherein said third cross-sectional profile differs from said second cross-sectional profile in at least one manner selected from the group consisting of: lesser depth, greater draft and greater ratio of draft to depth. 5. A fuel cell comprising a membrane electrode assembly and an article comprising a flow field which comprises one or more channels, wherein said flow field comprises at least one channel segment comprising first and second channel walls wherein said first and second channel walls differ in draft; wherein said article comprises an active portion which is the portion of said article bearing said flow field, wherein said active portion has a geometric center and an outer periphery, wherein said first channel wall is closer to said geometric center than said second channel wall, and wherein first channel wall has greater draft than said second channel wall. 6. The fuel cell according to claim 1 wherein said flow field comprises at least one channel segment comprising first and second channel walls wherein said first and second channel walls differ in draft. 7. The fuel cell according to claim 6 wherein said first channel wall is closer to said geometric center than said second channel wall, and wherein first channel wall has greater draft than said second channel wall. 8. A fuel cell comprising a membrane electrode assembly and an article comprising a flow field which comprises one or more channels, wherein said flow field comprises at least two channel segments which differ in draft; wherein said flow field comprises at least one channel segment comprising first and second channel walls wherein said first and second channel walls differ in draft; wherein said article comprises an active portion which is the portion of said article bearing said flow field, wherein said active portion has a geometric center and an outer periphery, wherein said first channel wall is closer to said geometric center than said second channel wall, and wherein first channel wall has greater draft than said second channel wall.

이 특허에 인용된 특허 (39)

McElroy James F. (Suffield CT), Bipolar fuel cell.
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Johnson, Mark C.; Wilkinson, David P.; Kenna, John; Vanderleeden, Olen R.; Zimmerman, Joerg; Tabatabaian, Mehrzad, Differential pressure fluid flow fields for fuel cells.
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Carlstrom ; Jr. Charles M., Easily-formable fuel cell assembly fluid flow plate having conductivity and increased non-conductive material.
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Washington Kirk B.,CAX ; Kenna John T.,CAX ; James Greg A.,CAX ; Ramji Shiraz N.,CAX, Edge manifold assembly for an electrochemical fuel cell stack.
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Baker Bernard S. (Brookfield Center CT) Dharia Dilip J. (Danbury CT), Electrochemical cell and separator plate thereof.
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Wilkinson David P.,CAX ; Voss Henry H.,CAX ; Fletcher Nicholas J.,CAX ; Johnson Mark C. ; Pow Eric G.,CAX, Electrochemical fuel cell stack with concurrent flow of coolant and oxidant streams and countercurrent flow of fuel and.
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Johnson Mark C. ; Wilkinson David P.,CAX ; Asman Charles P.,CAX ; Bos Myles L.,CAX ; Potter Robert J.,GB2, Electrochemical fuel cell with an electrode substrate having an in-plane nonuniform structure for control of reactant an.
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Debe, Mark Kevitt; Herdtle, Thomas, Flow field.
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Gibb, Peter R.; Davis, Neil V.; Gallagher, Emerson R., Flow field plate assembly for an electrochemical fuel cell.
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Cavalca Carlos (Wheeling IL) Homeyer Stephen Thomas (Arlington Heights IL) Walsworth Eric (Olivet MI), Flow field plate for use in a proton exchange membrane fuel cell.
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Nolscher Christoph,DEX ; Mattejat Arno,DEX, Fluid-cooled fuel cell with distribution ducts.
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Watkins David S. (Coquitlam CAX) Dircks Kenneth W. (North Vancouver CAX) Epp Danny G. (Delta CAX), Fuel cell fluid flow field plate.
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Spurrier Francis R. (Whitehall Boro PA) Pierce Bill L. (Whitehall Boro PA) Wright Maynard K. (Bethel Park PA), Fuel cell plates with improved arrangement of process channels for enhanced pressure drop across the plates.
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Granata ; Jr. Samuel J. (Greensburg PA) Woodle Boyd M. (North Huntingdon Township ; Westmoreland County PA), Fuel cell plates with skewed process channels for uniform distribution of stack compression load.
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Kaufman Arthur ; Terry Peter L., Fuel cell using water-soluble fuel.
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Wilson Mahlon S. (Los Alamos NM), Fuel cell with interdigitated porous flow-field.
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Wilson Mahlon S. ; Zawodzinski Christine, Fuel cell with metal screen flow field.
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Wilson Mahlon S. ; Zawodzinski Christine, Fuel cell with metal screen flow-field.
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Wilson Mahlon S. ; Zawodzinski Christine, Fuel cell with metal screen flow-field.
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Carlstrom ; Jr. Charles M. ; Maynard William B., Fuel cell with selective pressure variation and dynamic inflection.
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Watanabe Masahiro,JPX, Fuel cell, electrolytic cell and process of cooling and/or dehumidifying same.
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Spear ; Jr. Reginald G. ; Mueggenberg H. Harry ; Hodge Rex, Fuel cells employing integrated fluid management platelet technology.
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Kurita Kenji,JPX ; Kajio Katsuhiro,JPX, Gas-passage plates of a fuel cell.
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Chow Clarence Y.,CAX ; Wozniczka Boguslaw,CAX ; Chan John Ka Ki,CAX, Integrated reactant and coolant fluid flow field layer for an electrochemical fuel cell.
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Miyoshi Hideaki (Kobe JPX), Laminated layer type fuel cell.
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Wilkinson David P. (North Vancouver CAX) Voss Henry H. (North Vancouver CAX) Prater Keith B. (Vancouver CAX), Lightweight fuel cell membrane electrode assembly with integral reactant flow passages.
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Meacher John ; Vitale Nicholas G., Low cost fuel cell stack design.
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Debe Mark K. ; Poirier Richard J. ; Wackerfuss Michael K. ; Ziegler Raymond J., Membrane electrode assembly.
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Spear Reginald G. (Sacramento CA) Mueggenburg H. Harry (Carmichael CA) Hodge Rex (Sacramento CA), Metal platelet fuel cells production and operation methods.
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Lewinski, Krzysztof A.; Johnston, Raymond Patrick; Herdtle, Thomas; Ylitalo, David Adrian, Microstructured flow fields.
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Rock Jeffrey Allan, Mirrored serpentine flow channels for fuel cell.
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Parsonage Edward E. (Minneapolis MN) Debe Mark K. (Stillwater MN), Nanostructured electrode membranes.
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Watkins David S. (Coquitlam CAX) Dircks Kenneth W. (North Vancouver CAX) Epp Danny G. (Delta CAX), Novel fuel cell fluid flow field plate.
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Ernst William D. ; Mittleman Gary, PEM-type fuel cell assembly having multiple parallel fuel cell sub-stacks employing shared fluid plate assemblies and s.
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Wynne Robert Kenneth ; Neutzler Jay Kevin ; Barbir Frano ; Gurau Vladimir ; Pierce ; III Walter Edward, Self-humidifying fuel cell.
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Enami Yoshiaki,JPX, Solid polymer electrolyte fuel cell.
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Mao,Shane S.; Pierpont,Daniel M.; Le,Jimmy M.; Saulsbury,Kim B.; Mlinar,John R.; Moreau,Claude D., Unitized fuel cell assembly.
상세보기
Kothmann Richard E. (Churchill Borough PA), Variable area fuel cell cooling.
상세보기
Kothmann Richard E. (Churchill Borough PA), Variable area fuel cell process channels.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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