WO2016110344A1 - Dispositif servant à alimenter des piles à combustible d'un empilement de piles à combustible en milieu et empilement de piles à combustible - Google Patents

Dispositif servant à alimenter des piles à combustible d'un empilement de piles à combustible en milieu et empilement de piles à combustible Download PDF

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Publication number
WO2016110344A1
WO2016110344A1 PCT/EP2015/075967 EP2015075967W WO2016110344A1 WO 2016110344 A1 WO2016110344 A1 WO 2016110344A1 EP 2015075967 W EP2015075967 W EP 2015075967W WO 2016110344 A1 WO2016110344 A1 WO 2016110344A1
Authority
WO
WIPO (PCT)
Prior art keywords
media
medium
fuel cells
fuel cell
cell stack
Prior art date
Application number
PCT/EP2015/075967
Other languages
German (de)
English (en)
Inventor
Marius WALTERS
Axel KUHLMANN
Jürgen OGRZEWALLA
Original Assignee
Fev 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 Fev Gmbh filed Critical Fev Gmbh
Publication of WO2016110344A1 publication Critical patent/WO2016110344A1/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
    • H01M8/2484—Details of groupings of fuel cells characterised by external manifolds
    • H01M8/2485—Arrangements for sealing external manifolds; Arrangements for mounting external manifolds around a stack
    • 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
    • H01M8/2484—Details of groupings of fuel cells characterised by external manifolds

Definitions

  • the present invention relates to a device for supplying fuel cells of a fuel cell stack with a medium, comprising a media supply for supplying the medium to the individual fuel cells and a media removal for discharging the medium and / or reaction products of the individual fuel cells, wherein the media supply through the medium flow through the medium and / or the reaction products in a Ab technologicalströmungsrhythm, and further wherein the media supply to the fuel cell is serially connectable along the feed flow direction and the fluid discharge with the fuel cell is fluidly communicable in series along the Ab technologicalströmungsrhythm. Furthermore, the invention relates to a Fuel cell stack, comprising a plurality of fuel cells and a device for supplying the fuel cells with a medium.
  • Fuel cells are widely used in modern technology as energy sources.
  • multiple fuel cells are often combined to form a fuel cell stack.
  • the fuel cells in such a fuel cell stack must be supplied with an operation with different media, in particular for example with hydrogen and air.
  • a liquid cooling medium is often used for the cooling of a fuel cell stack.
  • connection points necessary for the individual media at one end of the fuel cell stack are known, for example, from EP 1 387 428 A2, EP 2 022 1 19 B1 or DE 103 04 657 A1 and shown in FIG. 1.
  • the individual fuel cells 51 are serially supplied in succession by a media supply 20 with the respective medium. After a flow through the individual fuel cells 51, the medium and / or resulting reaction products are also discharged serially successively through a media discharge 30 from the fuel cell 51, in such a way that with respect to a respective flow direction 21, 31, the connection order in the media supply 20 and in the media removal 30 is opposite.
  • the object is achieved by a device for supplying fuel cells of a fuel cell stack with a medium, comprising a media supply for supplying the medium to the individual fuel cells and a media removal for discharging the medium and / or reaction products from the individual fuel cells wherein the media supply through the medium can be flowed through in a feed flow direction and the medium discharge through the medium and / or the reaction products can be flowed through in a Abriosströmungsrhythm, and further wherein the media supply to the fuel cells in series along the feed flow direction is connectable and the media discharge with the fuel cells in series along the Ab technologicalströmungsoplasty fluidkommunipreparingd is connectable.
  • a device according to the invention is characterized in that the feed flow direction and the discharge flow direction are rectified or at least substantially rectified.
  • a device according to the invention it is possible to supply the individual fuel cells of a fuel cell stack with a medium. It is further provided that this medium and / or any resulting reaction products be removed again after flowing through the individual fuel cells.
  • a device according to the invention has a media feed and a media removal.
  • the individual fuel cells can be connected in a fluid-communicating manner in series with the media supply or with respect to a discharge flow direction serially one after the other with respect to a supply flow direction.
  • the media supply and the median discharge are arranged such that the supply flow direction and the discharge flow direction are rectified or at least substantially rectified.
  • the connection sequences of the individual fuel cells to the media supply and to the media removal are thus the same.
  • the media removal with the fuel cell in Ab technologicalströmungscardi is first connectable, which is also connectable as the first in Zuzhouströmungsplatz with the media supply.
  • the flow paths in which the medium is guided in the media supply and the media removal, in sum for all fuel cells are the same or at least substantially the same.
  • a device according to the invention can be designed such that hydrogen and / or air and / or a cooling fluid can be used as the medium.
  • the respectively required fluids can be provided by a device according to the invention.
  • a device according to the invention can also be used for all other fluids required for operation of a fuel cell stack.
  • hydrogen for example, methane or pure air instead of air can be transported through an apparatus according to the invention.
  • a particularly broad applicability of a device according to the invention can thereby be provided.
  • a media return fluid communication is connected to the media removal, wherein the media return through the medium and / or the reaction products can be flowed through in a return flow direction and the return flow direction and the Ab technologicalströmungsraum are opposite or at least substantially oppositely directed ,
  • the media removal and the media return are connected in a manner that communicates with the fluid via a deflection plate.
  • a deflection plate represents a particularly simple way of providing a fluid-communicating connection between the media removal and the media return.
  • the baffle plate can have a channel and / or a conduit leading from the end of the media removal to the beginning of the media return.
  • sealing elements may be provided to ensure a lossless transfer of the medium and / or the reaction products between the media removal and the media return.
  • such a baffle plate can also be used for clamping the fuel cells of the fuel cell stack.
  • a device in a device according to the invention it can further be provided that at least two media connections are provided, wherein the media supply to the first media port and the media return to the second media port are connected in a fluid-communicating manner and the media ports can be arranged at the same end of the fuel cell stack.
  • a device can be designed such that a supply plate is provided, wherein the at least two media connections are arranged in the supply plate.
  • a supply plate represents a particularly simple way to provide the media supply of the fuel cell stack.
  • the media connections can be arranged in a particularly simple manner, at least for one medium at one end of the fuel cell stack, in particular both for the supply and for the discharge of the medium and / or of reaction products.
  • sealing elements may be provided to provide a lossless transfer of the medium or the medium and / or the reaction products between the supply plate and the media supply or the media return.
  • media ports for a plurality of media such as hydrogen, air, and / or a cooling fluid, may be disposed in a supply plate.
  • a supply plate can also be used for clamping the fuel cells of the fuel cell stack, in particular together with a baffle.
  • the supply plate and the baffle plate are formed such that at least two stacks of fuel cells can be arranged between them.
  • a fuel cell stack often has two or more parallel stacks of fuel cells, for example, in order to be able to increase the number of fuel cells used at a limited height of the fuel cell stack yet.
  • a device according to the invention with a supply plate and a baffle that are designed so large that at least two stacks of fuel cells can be arranged between them such a parallel arrangement of multiple stacks of fuel cells can be achieved particularly easily.
  • a media supply or disposal of all fuel cells of the individual stacks are provided by the supply plate and the baffle plate.
  • a device according to the invention can be designed such that the media return is formed at least in sections through openings in the fuel cells.
  • the active area of the fuel cell used to effect the reaction between, for example, hydrogen and air often fills only a portion of the fuel cell. Outside this active surface can be provided, for example, to save weight, through openings.
  • the fuel cells of a fuel cell stack are also usually arranged one above the other, whereby these openings are arranged one above the other.
  • sealing elements can also be provided here.
  • the media return is formed at least in sections by a tube.
  • a tube is a particularly simple component to provide a media return.
  • a pipe is continuous between its beginning and its end, whereby sealing measures are simplified when using a pipe.
  • a device according to the invention can be developed to the effect that the tube is mounted floating by a bearing device.
  • a floating mounting of the tube it is possible to compensate for possible changes in the fuel cell stack, for example expansion and / or contraction by the action of heat. Even vibrations of the fuel cell stack can be compensated by the floating bearing.
  • a particularly safe, in particular with respect to the tightness of the media return safe, embodiment of a device according to the invention is made possible.
  • the tube is designed to guide the fuel cells, in particular parallel to a stacking direction of the fuel cells.
  • a change in volume of the individual fuel cells may occur, for example as a result of heat generation during operation.
  • a guide on the media return formed as a pipe it is possible to prevent a movement and in particular a displacement of the individual fuel cells perpendicular to the pipe and thus perpendicular to a stacking direction of the fuel cells.
  • the occurrence of leakage for example, caused by shear forces, which may occur in such lateral movements of the fuel cell, can be prevented.
  • a device according to the invention can also be designed in a further development such that a guide element is provided, wherein stacking of the fuel cells (51) during assembly of the fuel cell stack (50) can be supported by the guide element and the tube (42).
  • the individual fuel cells are preferably arranged one on top of another to form the stack.
  • a fuel cell stack comprising a plurality of fuel cells and a device for supplying the fuel cells with a medium.
  • a fuel cell stack according to the invention is characterized in that the device is designed according to the first aspect of the invention. Accordingly, a fuel cell stack according to the invention brings with it the same advantages as have been explained in detail with reference to a device according to the invention according to the first aspect of the invention.
  • a fuel cell stack according to the invention may have a plurality of devices according to the invention, in particular preferably one device for each fluid used.
  • a supply plate and / or a deflection plate may also be part of a plurality of devices according to the invention according to the first aspect of the invention.
  • Fig. 1 is a schematic representation of a U-like flow according to the
  • FIG. 2 shows the principle of a Z-like flow through the fuel cells 51 of a fuel cell stack 50 made possible by an apparatus 10 according to the invention.
  • a medium is introduced into a media supply 20.
  • the individual fuel cells 51 are connected in fluid communication with the media supply 20 in series with respect to a supply flow direction 21.
  • a media flow 53 in the individual fuel cells 51 is possible, with only one media flow 53 being identified by way of example.
  • the fuel cells 51 are also connected in a fluid-communicating manner to a median outlet 30, wherein the connection points with respect to a discharge flow direction 31 are also arranged serially one after the other in the medium discharge 30.
  • a second media connection 13 By a second media connection 13, the medium and / or a resulting reaction product is discharged from the fuel cell stack 50 again.
  • a Z-like flow is realized according to the invention. This is made possible in particular by the fact that the flow directions 21, 31 are rectified and thereby the connection sequence in the media supply 20 and in the media discharge 30 is the same with respect to the respective flow direction 21, 31. It is clearly visible that the path from the first media connection 12 to the second media connection 13 is the same or at least substantially the same length for all fuel cells 51.
  • a uniform supply of the respective fluid for example hydrogen, air or a cooling fluid can be ensured.
  • FIGS. 3a, b, c, d which will be described jointly below, a possible embodiment of a fuel cell stack 50 according to the invention with a device 10 according to the invention is shown.
  • FIGS. 3 a, b, c show individual components of the fuel cell stack 50 and the device 10 and FIG. 3 d shows the finished fuel cell stack 50.
  • a fuel cell stack 50 according to the invention has a plurality of fuel cells 51, one of which is shown schematically in FIG is.
  • an active surface is arranged, in which takes place during operation of the fuel cell stack 50, the reaction between, for example, hydrogen and air.
  • some media flows 53 are shown in this active area.
  • the medium for example hydrogen
  • the medium is supplied to the fuel cell 51 through a media supply 20 of a device 10 according to the invention.
  • a media removal 30 of a device 10 according to the invention unconsumed medium and / or reaction products are discharged again.
  • the media supply 20 and the media discharge 30 are integrated in the fuel cell 51 in this embodiment.
  • the fuel cell 51 outside the active surface openings 52 are arranged, for example, for weight reduction.
  • One of these openings 52 is used in the illustrated embodiment for forming a media return 40 of a device 10 according to the invention.
  • the medium recirculation 40 is thus also at least partially integrated into the individual fuel cells 51.
  • a deflection plate 14 is provided to form a fluid-communicating connection between the media outlet 30 and the media return 40.
  • This baffle 14 forms the lower end of the fuel cell stack 50.
  • a supply plate 1 1 is arranged at the opposite upper end of the fuel cell stack 50.
  • This supply plate 11 has two media connections 12, 13, of which the first media connection 12 is connected in a fluid-communicating manner to the media supply 20 and the second media connection 13 to the media return 40.
  • the supply plate 1 1 and the baffle 14 can also be used to brace the entire fuel cell stack 50.
  • even more components such as sealing elements may be provided.
  • the entire fuel cell stack 50 is shown, wherein additionally in dashed form, the essential components of the installed device 10 according to the invention are shown.
  • the media connections 12, 13 are arranged at one end of the fuel cell stack 50.
  • space can be saved because, for example, the necessary leads can be arranged to save space.
  • the flow directions 21, 31, 41 in the media supply 20, the media discharge 30 and the media return 40 are also shown. As a result, it can clearly be seen that the supply flow direction 21 and the purge flow direction 31 are rectified and at the same time the return flow direction 41 is directed opposite thereto.
  • FIG. 4 shows a further embodiment of a fuel cell stack 50 according to the invention with a device 10 according to the invention.
  • the medium return 40 is formed in sections as a tube 42.
  • this tube 42 is floatingly supported by a bearing device 43.
  • changes and / or loads on the fuel cell stack 50 for example an expansion upon exposure to heat and / or vibrations during operation, can be compensated by such a floating mounting. A reliable, trouble-free operation of the fuel cell stack 50 can thereby be made possible.

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  • 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 dispositif (10) servant à alimenter des piles à combustible (51) d'un empilement de piles à combustible (50) en milieu. Le dispositif comprend une amenée de milieu (20) servant à amener le milieu aux différentes piles à combustible (51) et une évacuation de milieu (30) servant à évacuer le milieu et/ou des produits réactionnels des différentes piles à combustible (51), l'amenée de milieu (20) pouvant être traversée par le milieu dans une direction d'écoulement d'amenée (21) et l'évacuation de milieu (30) pouvant être traversée par le milieu et/ou les produits réactionnels dans une direction d'écoulement d'évacuation (31), et l'amenée de milieu (20) pouvant en outre être reliée aux piles à combustible (51) en série le long de la direction d'écoulement d'amenée (21) et l'évacuation de milieu (30) pouvant être en communication fluidique avec les piles à combustible (51) en série le long de la direction d'écoulement d'évacuation (31). L'invention concerne en outre un empilement de piles à combustible (50), comprenant plusieurs piles à combustible (51) et un dispositif (10) servant à alimenter les piles à combustible (51) en milieu.
PCT/EP2015/075967 2015-01-07 2015-11-06 Dispositif servant à alimenter des piles à combustible d'un empilement de piles à combustible en milieu et empilement de piles à combustible WO2016110344A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015100123.3 2015-01-07
DE102015100123 2015-01-07

Publications (1)

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WO2016110344A1 true WO2016110344A1 (fr) 2016-07-14

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022116183A1 (de) 2022-06-29 2024-01-04 Baumgartner & Lamperstorfer Instruments GmbH Elektrochemischer stapel

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0959511A2 (fr) * 1998-04-22 1999-11-24 Toyota Jidosha Kabushiki Kaisha Séparateur de gaz pour pile à combustible et pile à combustible l'utilisant
US6103415A (en) * 1997-06-30 2000-08-15 Aisin Seki Kabushiki Kaisha Fuel cell with rectifying plates for uniform gas flow
US6524735B1 (en) * 1999-05-18 2003-02-25 Honda Giken Kogyo Kabushiki Kaisha Fuel cell stack with a curved flow guide section

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6103415A (en) * 1997-06-30 2000-08-15 Aisin Seki Kabushiki Kaisha Fuel cell with rectifying plates for uniform gas flow
EP0959511A2 (fr) * 1998-04-22 1999-11-24 Toyota Jidosha Kabushiki Kaisha Séparateur de gaz pour pile à combustible et pile à combustible l'utilisant
US6524735B1 (en) * 1999-05-18 2003-02-25 Honda Giken Kogyo Kabushiki Kaisha Fuel cell stack with a curved flow guide section

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022116183A1 (de) 2022-06-29 2024-01-04 Baumgartner & Lamperstorfer Instruments GmbH Elektrochemischer stapel
WO2024003229A2 (fr) 2022-06-29 2024-01-04 Baumgartner & Lamperstorfer Instruments GmbH Empilement électrochimique

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