WO2008003286A1 - Dispositif comportant une pile de cellules électrochimiques et procédé de solidarisation d'une pile de cellules électrochimiques - Google Patents

Dispositif comportant une pile de cellules électrochimiques et procédé de solidarisation d'une pile de cellules électrochimiques Download PDF

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Publication number
WO2008003286A1
WO2008003286A1 PCT/DE2007/001084 DE2007001084W WO2008003286A1 WO 2008003286 A1 WO2008003286 A1 WO 2008003286A1 DE 2007001084 W DE2007001084 W DE 2007001084W WO 2008003286 A1 WO2008003286 A1 WO 2008003286A1
Authority
WO
WIPO (PCT)
Prior art keywords
fuel cell
cell stack
sleeve
thermally insulated
insulating material
Prior art date
Application number
PCT/DE2007/001084
Other languages
German (de)
English (en)
Inventor
Jörn BUDDE
Original Assignee
Enerday 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 Enerday Gmbh filed Critical Enerday Gmbh
Publication of WO2008003286A1 publication Critical patent/WO2008003286A1/fr

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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
    • H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
    • H01M8/2465—Details of groupings of fuel cells
    • H01M8/247—Arrangements for tightening a stack, for accommodation of a stack in a tank or for assembling different tanks
    • H01M8/248—Means for compression of the fuel cell stacks
    • 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
    • H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
    • H01M8/2404—Processes or apparatus for grouping fuel cells
    • 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
    • H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
    • 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
    • H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
    • H01M8/241—Grouping of fuel cells, e.g. stacking of fuel cells with solid or matrix-supported electrolytes
    • H01M8/2425—High-temperature cells with solid electrolytes
    • H01M8/2432—Grouping of unit cells of planar configuration
    • 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
    • H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
    • H01M8/2465—Details of groupings of fuel cells
    • H01M8/247—Arrangements for tightening a stack, for accommodation of a stack in a tank or for assembling different tanks
    • H01M8/2475—Enclosures, casings or containers of fuel cell stacks
    • 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
    • H01M8/10—Fuel cells with solid electrolytes
    • H01M8/12—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte
    • H01M2008/1293—Fuel cells with solid oxide electrolytes
    • 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

  • the invention relates to a method for bracing a fuel cell stack.
  • the invention further relates to an arrangement with a fuel cell stack, which is at least partially surrounded by a thermally insulating material and applied to the forces by means of a bracing device.
  • Such methods and devices are known and are used, for example, in connection with SOFC fuel cells ("solid oxide fuel cell"). Since the voltage supplied by a fuel cell is determined by the electrochemical processes in the fuel cell, a plurality of fuel cells connected in series are used to provide a multiple of this voltage, wherein the superimposition of the individual anode, electrolyte and cathode existing fuel cell has proven.
  • bonded fuel cell stacks can be damaged by vibrations, which can cause them to fall apart at temperatures above 800 ° C. These temperatures are readily achieved in the operation of SOFC fuel cells. Compressible seals that are compressed by an external rigid clamping often do not adequately seal.
  • the invention has for its object to provide a method for bracing a fuel cell stack and an arrangement with a fuel cell stack under low apara- tive effort available. This object is achieved with the features of the independent claims.
  • the invention relates to a method for bracing a fuel cell stack, wherein the fuel cell stack is at least partially enclosed with thermally insulating material, whereby a thermally insulated fuel cell assembly is provided, and the thermally insulated fuel cell assembly is at least partially enclosed by at least one elastic sleeve.
  • a strain of a fuel cell stack makes complicated devices with tie rods etc. superfluous. Rather, an elastic sleeve is sufficient, which is pulled over the insulation of the fuel cell stack to hold together the thermally insulated fuel cell assembly and apply the required surface forces for bracing the fuel cell stack.
  • a force transmitter after the provision of a thermally insulated fuel cell arrangement, which, due to its shape, modifies the forces to be applied by the subsequently-to-be-provided cuff to the thermally insulated fuel cell arrangement.
  • a force transmitter can be adapted in its outer surface to the natural shape of the cuff, that is, it can give the thermally insulated fuel cell assembly at least in the region of the end plates cylindrical outer contour.
  • a cuff which is essentially cylindrical in the relaxed state can thus be well received create the outer contour of the thermally insulated fuel cell arrangement, wherein the force acting on the actual fuel cell stack forces acting perpendicular to the fuel cell stack due to a flat system of force mediator.
  • the invention builds on the generic arrangement in that the bracing device is an elastic sleeve, which at least partially surrounds the thermally insulating material.
  • the assembly may be configured to provide at least one force mediator between the thermally insulating material and the cuff, which by virtue of its shape, modifies the forces applied by the cuff to the thermally insulated fuel cell assembly.
  • the thermally insulating material modifies the forces applied by the sleeve to the thermally insulated fuel cell arrangement.
  • the insulation itself is modified in its outer surface in order to realize the corresponding vertical forces on the fuel cell stack with good conditioning of the cuff.
  • the arrangement is developed such that the sleeve consists of a uniform material.
  • This is a particularly cost-effective solution because the cuff is simple.
  • the sleeve has sleeve sections, which consist of different materials.
  • the axial end regions of the essentially cylindrical sleeve in the relaxed state can consist of other materials, so that they bear well against the side surfaces of the fuel cell stack or the insulation present there, while the intervening regions of the sleeve are replaced by the sleeve Choice of material with regard to an optimal power transmission to the fuel cell stack can be designed.
  • the sleeve at least partially consists of natural rubber.
  • the sleeve consists at least partially of silicone rubber. Natural rubber is designed for temperatures up to about 90 ° C., while silicone rubber can withstand temperatures in the range of 220 ° C. Depending on the design of the fuel cell stack and the thermal insulation thus one or the other materials may be preferred.
  • FIG. 1 shows in part a a fuel cell stack, in part b a thermal insulation and in part c a sleeve, in each case in a sectional representation;
  • Figure 2 is a sectional view of a first embodiment of an inventive arrangement;
  • Figure 3 is a sectional view of a second embodiment of an inventive arrangement.
  • Figure 4 is a sectional view of a third embodiment of an inventive arrangement.
  • FIG. 1 shows in part a a fuel cell stack, in part b a thermal insulation and in part c a sleeve, in each case in a sectional representation.
  • the fuel cell stack 10 has a plurality of superposed plate-shaped fuel cells 20.
  • the fuel cell stack 10 is cuboid or cube-shaped.
  • a thermally insulating material 12 consists of several thermally insulating elements 22, such as porous plates.
  • the division of the plates 22 indicated in FIG. 1b is arbitrary. In addition to the illustrated upper and side elements 22 not explicitly recognizable front and rear plates can be provided in the sectional view.
  • thermally insulating material can also be used, for example fibrous material or beds of individual elements, for example porous spheres.
  • the illustrated in Figure Ic in radial section Cuff 14 has a substantially axially symmetrical shape.
  • FIG. 2 shows a sectional view of a first embodiment of an arrangement according to the invention.
  • the fuel cell stack 10 is surrounded by the thermal insulation 12, so that a thermally insulated fuel cell assembly is available. This is edged by the cuff 14 tight.
  • the sleeve 14 can on the one hand hold the thermally insulating material 12 together, provided that it does not already hold together by gluing or similar techniques, and furthermore apply a force perpendicular to the planes defined by the fuel cell elements 20. Consequently, the sleeve 14 provides the required tension of the fuel cell stack 10.
  • thermally insulating material 12 is not provided in the form of a plate, but is present as a fill, for example, it may be sensible to securely secure it around the fuel cell stack 10 by means of a foil or other means to place and only later the cuff 14 raise.
  • FIG. 3 shows a sectional view of a second embodiment of an arrangement according to the invention.
  • force mediators 16, 18 are provided. These give the body around which the cuff 14 is laid, a partially cylindrical outer shape, whereby an adaptation to the shape of the sleeve 14 is present. While the forces applied to the force mediators 16, 18 have different directions, which is indicated by the arrows in FIG. 3, the thermal insulation 12 and thus also the fuel cell stack 10 have an effect the planes of the fuel cell 20 vertical forces, which is also indicated by arrows.
  • FIG. 4 shows a sectional view of a third embodiment of an arrangement according to the invention.
  • the thermally insulating material 12 is designed such that, in addition to the thermal insulation, it performs a useful force transmission, comparable to the effect of the force mediators 16, 18 according to FIG. 3.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Fuel Cell (AREA)

Abstract

L'invention concerne un procédé de solidarisation d'une pile de cellules électrochimiques (10) consistant à envelopper au moins partiellement la pile de cellules électrochimiques avec un matériau isolant thermique (12) de manière à réaliser un dispositif de cellules électrochimiques isolé thermiquement, et à envelopper au moins partiellement le dispositif de cellules électrochimiques isolé thermiquement au moyen d'au moins une chemise élastique (14). L'invention concerne également un dispositif comportant une pile de cellules électrochimiques.
PCT/DE2007/001084 2006-07-03 2007-06-20 Dispositif comportant une pile de cellules électrochimiques et procédé de solidarisation d'une pile de cellules électrochimiques WO2008003286A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006030605.8 2006-07-03
DE102006030605A DE102006030605A1 (de) 2006-07-03 2006-07-03 Anordnung mit einem Brennstoffzellenstapel und Verfahren zum Verspannen eines Brennstoffzellenstapels

Publications (1)

Publication Number Publication Date
WO2008003286A1 true WO2008003286A1 (fr) 2008-01-10

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PCT/DE2007/001084 WO2008003286A1 (fr) 2006-07-03 2007-06-20 Dispositif comportant une pile de cellules électrochimiques et procédé de solidarisation d'une pile de cellules électrochimiques

Country Status (2)

Country Link
DE (1) DE102006030605A1 (fr)
WO (1) WO2008003286A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008089977A1 (fr) * 2007-01-26 2008-07-31 Topsoe Fuel Cell Structure de serrage d'empilement de piles à combustible et empilement de piles à combustible à oxyde solide
WO2010102815A1 (fr) 2009-03-13 2010-09-16 Topsoe Fuel Cell A/S Boîtier de compression pour empilement de piles à combustible et procédé de fabrication d'un boîtier de compression pour empilement de piles à combustible
WO2011157351A1 (fr) 2010-06-17 2011-12-22 Topsøe Fuel Cell A/S Répartiteur de force pour un empilement de cellules électrochimiques ou de cellules électrolytiques

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008059966B4 (de) 2008-12-02 2011-06-22 Daimler AG, 70327 Batterie mit mehreren in einem Zellenverbund angeordneten Batteriezellen und Verwendung einer Batterie
CN105122528B (zh) * 2013-03-08 2019-09-10 努威拉燃料电池有限责任公司 电化学堆压缩系统
DE102013212899A1 (de) * 2013-07-02 2015-01-08 Bayerische Motoren Werke Aktiengesellschaft Verspannungssystem für ein Brennstoffzellensystem
DE102013013723B4 (de) * 2013-08-20 2015-04-23 Stephan Köhne Vorrichtung zur Verspannung eines Brennstoffzellen-Stapels zur Strom- und/oder Wärmeerzeugung mit integrierter Temperaturregulierung des Brennstoffzellen-Stapels
US11746427B2 (en) 2021-07-05 2023-09-05 EvolOH, Inc. Scalable electrolysis cell and stack and method of high-speed manufacturing the same

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WO1999027602A1 (fr) * 1997-11-25 1999-06-03 Ballard Power Systems Inc. Ensemble de compression pour un empilement de cellules electrochimiques
US5993987A (en) * 1996-11-19 1999-11-30 Ballard Power Systems Inc. Electrochemical fuel cell stack with compression bands
US6040072A (en) * 1997-11-19 2000-03-21 Lynntech, Inc. Apparatus and method for compressing a stack of electrochemical cells
US20050064268A1 (en) * 2003-04-11 2005-03-24 Kyu Taek Cho Fastening mechanism of a fuel cell stack
DE102004027694A1 (de) * 2004-02-05 2005-08-25 Daimlerchrysler Ag Brennstoffzellenstapel mit Spannsystem
WO2006012844A1 (fr) * 2004-08-02 2006-02-09 Staxera Gmbh Empilement de cellules electrochimiques avec dispositif de serrage
US20060093890A1 (en) * 2004-10-29 2006-05-04 Steinbroner Matthew P Fuel cell stack compression systems, and fuel cell stacks and fuel cell systems incorporating the same

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DE1150053B (de) * 1961-08-30 1963-06-12 Varta Ag Gasdiffusionselektrode fuer elektrochemische Zellen
US3364071A (en) * 1963-04-10 1968-01-16 Union Carbide Corp Fuel cell with capillary supply means
CH486784A (de) * 1967-09-20 1970-02-28 Ferranti Ltd Brennstoffelement mit bei Arbeitstemperatur geschmolzenem Carbonatelektrolyten und Verfahren zu dessen Herstellung
DE4324907A1 (de) * 1993-07-24 1995-01-26 Dornier Gmbh Verschalten von Brennstoffzellen
DE10334130B4 (de) * 2003-07-25 2009-10-08 Staxera Gmbh Brennstoffzellenanordnung und Vorrichtung zum Befestigen einer Brennstoffzellenanordnung an einem Gehäuse

Patent Citations (7)

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Publication number Priority date Publication date Assignee Title
US5993987A (en) * 1996-11-19 1999-11-30 Ballard Power Systems Inc. Electrochemical fuel cell stack with compression bands
US6040072A (en) * 1997-11-19 2000-03-21 Lynntech, Inc. Apparatus and method for compressing a stack of electrochemical cells
WO1999027602A1 (fr) * 1997-11-25 1999-06-03 Ballard Power Systems Inc. Ensemble de compression pour un empilement de cellules electrochimiques
US20050064268A1 (en) * 2003-04-11 2005-03-24 Kyu Taek Cho Fastening mechanism of a fuel cell stack
DE102004027694A1 (de) * 2004-02-05 2005-08-25 Daimlerchrysler Ag Brennstoffzellenstapel mit Spannsystem
WO2006012844A1 (fr) * 2004-08-02 2006-02-09 Staxera Gmbh Empilement de cellules electrochimiques avec dispositif de serrage
US20060093890A1 (en) * 2004-10-29 2006-05-04 Steinbroner Matthew P Fuel cell stack compression systems, and fuel cell stacks and fuel cell systems incorporating the same

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008089977A1 (fr) * 2007-01-26 2008-07-31 Topsoe Fuel Cell Structure de serrage d'empilement de piles à combustible et empilement de piles à combustible à oxyde solide
JP2010517230A (ja) * 2007-01-26 2010-05-20 トプサー・フューエル・セル・アクチエゼルスカベット 燃料電池スタックのクランプ構造および固体酸化物型燃料電池スタック
WO2010102815A1 (fr) 2009-03-13 2010-09-16 Topsoe Fuel Cell A/S Boîtier de compression pour empilement de piles à combustible et procédé de fabrication d'un boîtier de compression pour empilement de piles à combustible
US9034534B2 (en) 2009-03-13 2015-05-19 Haldor Topsoe A/S Compression casing for a fuel cell stack and a method for manufacturing a compression casing for a fuel cell stack
WO2011157351A1 (fr) 2010-06-17 2011-12-22 Topsøe Fuel Cell A/S Répartiteur de force pour un empilement de cellules électrochimiques ou de cellules électrolytiques

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Publication number Publication date
DE102006030605A1 (de) 2008-01-10

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