WO2002071521A2 - Plaque bipolaire - Google Patents

Plaque bipolaire Download PDF

Info

Publication number
WO2002071521A2
WO2002071521A2 PCT/DE2002/000472 DE0200472W WO02071521A2 WO 2002071521 A2 WO2002071521 A2 WO 2002071521A2 DE 0200472 W DE0200472 W DE 0200472W WO 02071521 A2 WO02071521 A2 WO 02071521A2
Authority
WO
WIPO (PCT)
Prior art keywords
fuel cell
bipolar plate
channels
water
channel
Prior art date
Application number
PCT/DE2002/000472
Other languages
German (de)
English (en)
Other versions
WO2002071521A3 (fr
Inventor
Andrei Kulikovsky
Hendrik Dohle
Jürgen Mergel
Original Assignee
Forschungszentrum Jülich GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Forschungszentrum Jülich GmbH filed Critical Forschungszentrum Jülich GmbH
Publication of WO2002071521A2 publication Critical patent/WO2002071521A2/fr
Publication of WO2002071521A3 publication Critical patent/WO2002071521A3/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
    • H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
    • H01M8/04119—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying
    • H01M8/04156—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying with product water removal
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/02—Details
    • H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
    • H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells

Definitions

  • bipolar plates In addition to the electrical and mechanical properties, bipolar plates also regularly have gas distribution structures.
  • the gas distributor structures consist of gas channels for supplying the electrodes with equipment which separate webs with electrode contact from one another. Gasverteilerstruktu- Ren cause the resources to be evenly distributed in the electrode spaces.
  • the object is achieved by a method according to the main claim and by a bipolar plate according to the secondary claim.
  • Advantageous embodiments can be found in the claims that refer back to them.
  • the method for operating a fuel cell provides that the channels of a bipolar plate are subjected to different pressures.
  • the different pressure is built up by introducing the equipment into the channels.
  • the water to be discharged is pressed into the channel with the lowest pressure by the pressure gradient during operation of the fuel cell.
  • This channel therefore acts as a water collector. It is sufficient to set a slightly lower pressure for this channel.
  • One of the channels of the bipolar plate is supplied on the cathode side with an operating medium with a slightly lower pressure than the rest of the channel or the other channels for the same operating medium.
  • the pressure for the channels can be identical on the anode side.
  • the setting of a reduced pressure for a channel on the cathode side makes the method particularly suitable for the operation of a low-temperature fuel cell, e.g. B. a direct methanol fuel cell.
  • the channel marked in black was subjected to a slightly lower pressure P than the channel marked in light gray and dark gray

Abstract

L'invention concerne une plaque bipolaire, destinée à être utilisée dans une pile à combustible, présentant des canaux et des nervures avec des contacts d'électrode, caractérisée en ce qu'il est prévu au moins deux canaux en forme de méandres et parallèles entre eux. Les nervures peuvent présenter des zones de porosité constante. Dans une pile à combustible comprenant une telle plaque bipolaire, l'eau de production, par exemple, l'eau, dans le cas d'une pile à combustible à basse température, qui se déplace de la partie anodique vers le compartiment cathodique, par électro-osmose, à travers la membrane, s'évacue très efficacement de la pile. L'invention concerne en outre un procédé permettant de faire fonctionner une pile à combustible en alimentant les canaux par des fluides de fonctionnement sous des pressions différentes. De ce fait, le canal de plus faible pression sert régulièrement de collecteur d'eau, ce qui permet d'accroître le rendement de la pile à combustible.
PCT/DE2002/000472 2001-03-06 2002-02-08 Plaque bipolaire WO2002071521A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10110819.2 2001-03-06
DE10110819A DE10110819B4 (de) 2001-03-06 2001-03-06 Verfahren zum Betreiben einer Brennstoffzelle

Publications (2)

Publication Number Publication Date
WO2002071521A2 true WO2002071521A2 (fr) 2002-09-12
WO2002071521A3 WO2002071521A3 (fr) 2004-07-08

Family

ID=7676523

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2002/000472 WO2002071521A2 (fr) 2001-03-06 2002-02-08 Plaque bipolaire

Country Status (2)

Country Link
DE (1) DE10110819B4 (fr)
WO (1) WO2002071521A2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1432059A1 (fr) * 2002-06-01 2004-06-23 Behr GmbH & Co. KG Plaque séparatrice ayant des canaux pour fluides parallèles pour utilisation dans une pile à combustible
WO2005024985A2 (fr) * 2003-08-29 2005-03-17 Zentrum für Sonnenenergie- und Wasserstoff-Forschung Baden-Württemberg Gemeinnützige Stiftung Champ de distribution de gaz destine a une cellule de combustible et cellule de combustible contenant un tel champ de distribution de gaz
DE102004017501B4 (de) * 2003-04-14 2008-04-10 General Motors Corp. (N.D.Ges.D. Staates Delaware), Detroit Brennstoffzelle, Brennstoffzellenstapel, Verfahren zu deren Herstellung sowie Verwendung der Brennstoffzelle

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10204598A1 (de) 2002-02-05 2003-08-07 Volkswagen Ag Verfahren zur Verbesserung eines Wärme- und Stofftransports in einer Diffusionsschicht einer Brennstoffzelle und entsprechende Brennstoffzelle
DE102005002924A1 (de) * 2005-01-14 2006-07-20 Volkswagen Ag Gasverteilungsvorrichtung einer Brennstoffzelle und Brennstoffzelle

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0415733A2 (fr) * 1989-08-30 1991-03-06 Her Majesty The Queen As Represented By The Minister Of National Defence Of Her Majesty's Canadian Government Pile à combustible avec une plaque distributrice de fluides
US6015633A (en) * 1998-10-07 2000-01-18 Plug Power, L.L.C. Fluid flow plate for water management, method for fabricating same, and fuel cell employing same
WO2001013441A2 (fr) * 1999-08-16 2001-02-22 Alliedsignal Inc. Pile a combustible presentant des capacites ameliorees de gestion de produit de reaction et de condensation

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4410711C1 (de) * 1994-03-28 1995-09-07 Forschungszentrum Juelich Gmbh Metallische bipolare Platte für HT-Brennstoffzellen und Verfahren zur Herstellung desselben
DE4430958C1 (de) * 1994-08-31 1995-10-19 Forschungszentrum Juelich Gmbh Feststoffelektrolyt-Hochtemperatur-Brennstoffzelle und Brennstoffzellen-Anordnung
US5840438A (en) * 1995-08-25 1998-11-24 Ballard Power Systems Inc. Electrochemical fuel cell with an electrode substrate having an in-plane nonuniform structure for control of reactant and product transport
DE19531852C1 (de) * 1995-08-30 1996-12-19 Forschungszentrum Juelich Gmbh Brennstoffzelle mit Entwässerungssystem
US6066408A (en) * 1997-08-07 2000-05-23 Plug Power Inc. Fuel cell cooler-humidifier plate
DE10043008A1 (de) * 2000-09-01 2002-03-28 Forschungszentrum Juelich Gmbh Bipolare Platte

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0415733A2 (fr) * 1989-08-30 1991-03-06 Her Majesty The Queen As Represented By The Minister Of National Defence Of Her Majesty's Canadian Government Pile à combustible avec une plaque distributrice de fluides
US6015633A (en) * 1998-10-07 2000-01-18 Plug Power, L.L.C. Fluid flow plate for water management, method for fabricating same, and fuel cell employing same
WO2001013441A2 (fr) * 1999-08-16 2001-02-22 Alliedsignal Inc. Pile a combustible presentant des capacites ameliorees de gestion de produit de reaction et de condensation

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1432059A1 (fr) * 2002-06-01 2004-06-23 Behr GmbH & Co. KG Plaque séparatrice ayant des canaux pour fluides parallèles pour utilisation dans une pile à combustible
DE102004017501B4 (de) * 2003-04-14 2008-04-10 General Motors Corp. (N.D.Ges.D. Staates Delaware), Detroit Brennstoffzelle, Brennstoffzellenstapel, Verfahren zu deren Herstellung sowie Verwendung der Brennstoffzelle
DE102004017501C5 (de) * 2003-04-14 2009-12-24 General Motors Corp. (N.D.Ges.D. Staates Delaware), Detroit Brennstoffzelle, Brennstoffzellenstapel, Verfahren zu deren Herstellung sowie Verwendung der Brennstoffzelle
WO2005024985A2 (fr) * 2003-08-29 2005-03-17 Zentrum für Sonnenenergie- und Wasserstoff-Forschung Baden-Württemberg Gemeinnützige Stiftung Champ de distribution de gaz destine a une cellule de combustible et cellule de combustible contenant un tel champ de distribution de gaz
WO2005024985A3 (fr) * 2003-08-29 2005-12-22 Zsw Champ de distribution de gaz destine a une cellule de combustible et cellule de combustible contenant un tel champ de distribution de gaz

Also Published As

Publication number Publication date
DE10110819B4 (de) 2013-01-31
DE10110819A1 (de) 2002-10-02
WO2002071521A3 (fr) 2004-07-08

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