WO2014015954A1 - Method and device for joining at least two components of a fuel cell - Google Patents

Method and device for joining at least two components of a fuel cell Download PDF

Info

Publication number
WO2014015954A1
WO2014015954A1 PCT/EP2013/002070 EP2013002070W WO2014015954A1 WO 2014015954 A1 WO2014015954 A1 WO 2014015954A1 EP 2013002070 W EP2013002070 W EP 2013002070W WO 2014015954 A1 WO2014015954 A1 WO 2014015954A1
Authority
WO
WIPO (PCT)
Prior art keywords
adhesive
components
component
fuel cell
viscosity
Prior art date
Application number
PCT/EP2013/002070
Other languages
German (de)
French (fr)
Inventor
Martin Keuerleber
Christian Wulff
Original Assignee
Daimler Ag
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 Daimler Ag filed Critical Daimler Ag
Publication of WO2014015954A1 publication Critical patent/WO2014015954A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
    • B29C65/483—Reactive adhesives, e.g. chemically curing adhesives
    • B29C65/4835—Heat curing adhesives
    • 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
    • H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/52—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the way of applying the adhesive
    • B29C65/526—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the way of applying the adhesive by printing or by transfer from the surfaces of elements carrying the adhesive, e.g. using brushes, pads, rollers, stencils or silk screens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
    • B29C66/028—Non-mechanical surface pre-treatments, i.e. by flame treatment, electric discharge treatment, plasma treatment, wave energy or particle radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/45—Joining of substantially the whole surface of the articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/812—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/8122—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps characterised by the composition of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • 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
    • H01M8/0267—Collectors; Separators, e.g. bipolar separators; Interconnectors having heating or cooling means, e.g. heaters or coolant flow channels
    • 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
    • H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
    • H01M8/028—Sealing means characterised by their material
    • H01M8/0284—Organic resins; Organic polymers
    • 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
    • H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
    • H01M8/0286—Processes for forming seals
    • 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
    • H01M8/2483—Details of groupings of fuel cells characterised by internal manifolds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
    • B29C65/483—Reactive adhesives, e.g. chemically curing adhesives
    • B29C65/4845—Radiation curing adhesives, e.g. UV light curing adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7858—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus characterised by the feeding movement of the parts to be joined
    • B29C65/7861—In-line machines, i.e. feeding, joining and discharging are in one production line
    • B29C65/787—In-line machines, i.e. feeding, joining and discharging are in one production line using conveyor belts or conveyor chains
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
    • B29C66/5346—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat
    • B29C66/53461—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat joining substantially flat covers and/or substantially flat bottoms to open ends of container bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/721—Fibre-reinforced materials
    • B29C66/7212—Fibre-reinforced materials characterised by the composition of the fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/721—Fibre-reinforced materials
    • B29C66/7214—Fibre-reinforced materials characterised by the length of the fibres
    • B29C66/72143—Fibres of discontinuous lengths
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
    • B29L2031/3468—Batteries, accumulators or fuel cells
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/756—Microarticles, nanoarticles
    • 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 and a device for connecting at least two components of a fuel cell by means of adhesive.
  • the adhesive is irradiated for a predetermined period of time and arranged the at least two plate elements in the desired joining position and added under pressure and / or heat.
  • the method is z. B. used in the production of fuel cell stacks.
  • DE 10 2010 033 724 A1 discloses a method and a device for applying an adhesive to fuel cell components.
  • the adhesive is applied to a transfer body at least in one operation and is subsequently transferred from the transfer body to predetermined positions on at least one of the fuel cell components.
  • DE 10 20 0 033 724 A1 describes a device by means of which the adhesive can be applied to a fuel cell component.
  • the device is characterized by at least one application unit
  • the invention has for its object to provide a comparison with the prior art improved method and an improved device for connecting at least two components of a fuel cell.
  • the object is achieved with respect to the method by the in claim 1 and in terms of the device by the features specified in claim 6.
  • a method for bonding two components of a fuel cell by means of adhesive provides that the adhesive is applied directly to at least one predetermined area of at least one component by means of a screen printing process and then irradiated at least to adjust its viscosity and / or to activate the adhesive.
  • the adhesive according to the invention is applied in Siebdr ck on at least a predetermined range of at least one component of the fuel cell, it is possible in profit-making way to increase a cycle time for the production of fuel cells.
  • the adhesive is applied by machine screen directly to the predetermined areas by means of the screen printing process, so that a manual handling for
  • Coating the at least one component with the adhesive and thus caused errors can be substantially excluded.
  • the adhesive By applying the adhesive by screen printing material, in particular adhesive can be saved, since the adhesive is applied only in the predetermined areas on the component.
  • the adhesive can be applied with variable thickness and selectively by means of the screen printing process. This can be thinner
  • the variability in the thickness can e.g. be achieved with the help of various different thick sieves.
  • the viscosity of the adhesive By means of the irradiation of the adhesive, it is possible to adjust the viscosity thereof, so that unevenness in the predetermined area to which the adhesive is to be applied can be compensated, for example by means of IR radiation. Radiation. Alternatively or additionally, the viscosity of the adhesive through the
  • Irradiation are set so that the risk of flow of the adhesive when connecting the two components is at least reduced, e.g. with the help of UV radiation.
  • the adhesive is irradiated by means of infrared radiation and / or ultraviolet radiation, wherein it is advantageously provided to irradiate the adhesive both by means of infrared radiation and by means of ultraviolet radiation.
  • the viscosity of the adhesive is adjusted, preferably reduced, so that particularly advantageously the unevenness in the predetermined region of the component can be compensated, wherein the adhesive by means of
  • Ultraviolet radiation is activated and the viscosity of the adhesive is increased, so that the risk of flow of the adhesive when connecting the two components is at least reduced.
  • the adhesive thus does not appear between the two interconnected components, so that no removal of the adhesive in the
  • the components are connected to one another and arranged in a heatable tool at least for curing of the adhesive.
  • the two components for connection in a tool can be arranged, in which the adhesive also hardens, so that a single operation, namely the re-positioning of the two components to be joined, can be omitted.
  • a pressure, a time and / or a temperature for connecting the components and / or for curing the adhesive can be adjusted.
  • at least for connecting the two components only as much pressure by means of the tool on the two
  • the adhesive is applied to at least one component at least one edge region circumferentially by means of the screen printing process, so that the component is held with its edge region on the at least one further component.
  • the invention relates to a device with a transport device, by means of which the at least one component can be transported to workstations, a screen printing device for direct application of the adhesive to at least a predetermined region of the at least one component, and at least one
  • Irradiation device by means of which a viscosity of the adhesive is adjustable and / or the adhesive is activated.
  • Production of a fuel cell can be reduced because, for example, cycle times can be increased.
  • Transport device is moved, a manual handling can be omitted, whereby the security is increased at least during the transport process.
  • the at least one comprises
  • Irradiation device Means for irradiating the adhesive with infrared radiation and / or ultraviolet radiation.
  • the viscosity of the adhesive is adjustable, wherein the activation of the adhesive takes place by means of the ultraviolet radiation.
  • the at least two components can be arranged at least for connection in a tool, wherein the tool is heatable, so that the adhesive in particular for connecting at least the two components can be activated and thus a permanent cohesive connection between the two components can be produced.
  • one of the at least two components is one
  • Catalyst layer is connectable as a further component.
  • Fig. 1 shows a schematic perspective view of a component of a
  • Fig. 2 shows a schematic perspective view of a component of a
  • Fig. 3 shows schematically an enlarged detail of a sectional view of a
  • FIG. 4 schematically shows an enlarged detail of the one shown in FIG.
  • FIG. 5 shows a schematic perspective view of a device for applying the adhesive to the component of the fuel cell and for connecting at least two components of the fuel cell.
  • FIG. 1 shows schematically an application of adhesive 1 on a first component B1 according to the prior art, wherein the adhesive 1 is provided for connecting two components B1, B2 of a membrane electrode assembly 3 of a fuel cell shown in more detail in FIG. wherein in Figure 3, a second component B2 is shown.
  • the first component B1 is a gas diffusion layer and the second component B2 is a catalyst layer of the membrane electrode assembly 3.
  • the first component B1 is, in particular, a polymer film of carbon fibers and polytetrafluoroethylene, which consists of carbon and fluorine consists.
  • the carbon fibers may be impregnated with the polytetrafluoroethylene.
  • the adhesive 1 as a film adhesive in the form of reactive hot melt adhesive over its entire surface on an edge region of the first
  • Component B1 applied and the first component B1 is bonded to the second component B2 shown in Figure 3.
  • the adhesive film is detached from its carrier material and positioned, for example with the aid of a robot, on the first component B1. Subsequently, the adhesive film is stapled by means of heating pins to the first component B1 and thereby fixed in position.
  • the first component B1 with the adhesive film stapled to it is arranged in a heatable tool 2 shown in greater detail in FIG. 5, in which the adhesive film for joining the first component B1 to the second component B2 is melted and then cured, so that the two components B1, B2 are materially interconnected.
  • Adhesive 1 can for example result in a lot of waste with respect to the adhesive film and relatively long curing times, whereby no contact-free curing possibility is given.
  • a connection of the two components B1, B2 by means of the adhesive film is cost-intensive, with a handling of detached from the carrier material
  • Adhesive film can be difficult.
  • FIG. 2 shows a gas diffusion layer as the first constituent B1 of the fuel cell with adhesive 1 selectively applied in predetermined regions.
  • the adhesive 1 is applied to the predetermined regions of the first constituent B1 by means of a screen printing process, which is carried out in a screen printing device 4.1 as a partial device of a device 4 shown in FIG.
  • the screen printing device 4.1 for applying the adhesive 1 is adjusted so that the adhesive 1 is applied in two predetermined spaced apart parallel strips S on a peripheral edge region of the first constituent B1 of the membrane electrode assembly 3.
  • the adhesive 1 as a peripheral frame R three in the first component B1 inserted openings 5 for connecting applied, wherein a further strip S1 of the adhesive 1 is applied to the first component B1 in the region of the openings 5 between an edge of the inner circumferential strip S of the adhesive 1.
  • the openings 5 in the first component B1 serve in particular for passing reaction gases G and a coolant through the fuel cell.
  • the gas diffusion layer as the first constituent B1 is bonded to a catalyst layer as the second constituent B2 of the fuel cell by means of the adhesive 1 applied in the predetermined regions, as shown in an enlarged section of the membrane-electrode assembly 3 in FIG.
  • the membrane-electrode assembly 3 has two first constituents B1 in the form of a gas diffusion layer, wherein the two first constituents B1 are connected to one catalyst layer as the second constituent B2 by means of the adhesive 1.
  • a proton exchange membrane 6 is arranged between the two catalyst layers as second constituents B2, with the two catalyst layers forming a coated catalyst membrane of the membrane electrode assembly 3 as second constituents B2 and the proton exchange membrane 6 arranged between them ,
  • the adhesive 1 is applied to the first component B1 only in the predetermined regions.
  • the gas diffusion layer as the first constituent B1 of the membrane-electrode assembly 3 allows a transport of a reaction gas G to the catalyst layer as a second constituent B2 and a removal of water W, as in an enlarged
  • Section of the gas diffusion layer as the first component B2 is shown in Figure 4 in more detail.
  • the gas diffusion layer as the first constituent B1 consists predominantly of
  • Carbon fibers for example, as a short fibers arranged in a random direction can form a clutch or can be arranged directionally oriented as tissue. Between individual carbon fibers are particles of polytetrafluoroethylene, wherein the carbon fibers may be impregnated with the polytetrafluoroethylene.
  • the device 4 for connecting at least the two components B1, B2 one
  • the device 4 also has a transport device 4.2, a
  • Irradiation device 4.3 and preferably the arranged next to the transport device 4.2 heated tool 2.
  • the transport device 4.2 serves to transport the first constituents B1 in the form of the gas diffusion layers to the individual devices 4.1, 4.3, 2, wherein two first constituents B1 are arranged and held on a plate element 7, a so-called vacuum pressure nest.
  • Components B1 transportable, preferably without having to be handled manually.
  • Screen printing device 4.1 is on the predetermined areas of the first two
  • the adhesive 1 is preferably with a predetermined layer thickness on the predetermined areas of the first
  • the two first constituents B1 with the applied adhesive 1 are moved out of the screen printing device 4.1 by means of the plate element 7 and fed to the irradiation device 4.3.
  • At least one first radiator 8 by means of which infrared radiation is emitted, is arranged, wherein in a second region 4.3.2 at least one second radiator 9 is arranged for the emission of ultraviolet radiation.
  • Components B1 are simultaneously supplied to the first area 4.3.1 and then to the second area 4.3.2 of the irradiation device 4.3 and irradiated. Irradiation by means of the infrared radiation at least serves to adapt a flow behavior, that is to say a viscosity of the adhesive 1 on the first component B1. By means of the infrared radiation, the adhesive 1 is heated, whereby a flowability is increased, the viscosity is thus reduced.
  • the reduction of the viscosity of the adhesive 1 can be compensated by the same possibly unevenness in the area in which the adhesive 1 is applied to the first component B1.
  • the fluidity is increased by the heating, whereby the adhesive 1 is distributed better and distributed in any existing bumps.
  • the viscosity of the adhesive 1 is adjusted by means of the infrared radiation only when the adhesive 1 does not have sufficient fluidity to eventual
  • the adhesive 1 thus has sufficient flowability, the irradiation by means of the first radiator 8 can also be dispensed with, and the two first constituents B1 are removed by means of the first
  • Irradiation device 4.3 supplied.
  • the second radiator 9 by means of which ultraviolet radiation is emitted, is arranged.
  • the two arranged on the plate member 7 first constituents B1 are irradiated with the ultraviolet radiation of the second radiator 9 to activate contained in the adhesive 1 photoinitiators. Furthermore, by means of the irradiation of the two first constituents B1 with the ultraviolet radiation, the viscosity of the adhesive 1 is increased, as a result of which the adhesive 1 becomes more viscous in comparison, ie the flowability of the adhesive 1 is reduced.
  • Components B1 are each connected to a second component B2, d. H. joined, wherein it is the second component B2, as described above, each one
  • Catalyst layer of the fuel cell is.
  • Transport device 4.2 provided for arrangement in the heated tool 2.
  • the second component B2 is already arranged in the heated tool 2 for connection to the first component B1.
  • first the first component B1 and then the second component B2 in the heatable tool 2 is arranged.
  • the two components B1, B2 by means of the heated
  • the heatable tool 2 is designed such that a pressure with which the two components B1, B2 are pressed against each other, a temperature which acts on the components B1, B2 by means of the heatable tool 2, as well as a time, for example for heating of
  • Tool 2 and / or the juxtaposition is adjustable.
  • Pressing together the components B1, B2 is set only so high that the adhesive 1 when connecting little to no runs, the components B1, B2 but still pressed together and thus connected.
  • a complete layer composite of the membrane electrode assembly 3 is preferably arranged and connected to one another, the membrane electrode assembly 3 each comprising two first constituents B1, two second constituents B2 and the proton exchange membrane 6.
  • Manufacturing costs for producing a membrane-electrode assembly 3 can be reduced.
  • the first component is moved by means of the transport device as part of the device, whereby cycle times during production can be increased.
  • cycle times during production can be increased.
  • Adhesive geometry in the screen printing device 4.1 comparatively easy and feasible without significant cost increase in terms of production.

Landscapes

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

Abstract

The invention relates to a method and device for joining at least two components (B1, B2) of a fuel cell using an adhesive (1). According to the invention, the adhesive (1) is applied directly by means of a screen printing method to at least one predefined region of at least one component (B1, B2) and then irradiated at least to adjust its viscosity and/or to activate the adhesive (1).

Description

Verfahren und Vorrichtung zum Verbinden zumindest zweier Bestandteile einer  Method and device for connecting at least two components of a
Brennstoffzelle  fuel cell
Die Erfindung betrifft ein Verfahren und eine Vorrichtung zum Verbinden zumindest zweier Bestandteile einer Brennstoffzelle mittels Klebstoff. The invention relates to a method and a device for connecting at least two components of a fuel cell by means of adhesive.
Aus der DE 102 51 775 A1 ist ein Verfahren zum Fügen von mindestens zwei From DE 102 51 775 A1 a method for joining at least two
Plattenelementen einer Brennstoffzelleneinheit bekannt. Dabei wird ein Plate elements of a fuel cell unit known. This is a
strahlungsaktivierbares Klebemittel auf mindestens eines der mindestens zwei radiation-activatable adhesive on at least one of the at least two
Plattenelemente aufgebracht. Das Klebemittel wird während einer vorbestimmten Zeitdauer bestrahlt und die mindestens zwei Plattenelemente in der gewünschten Fügeposition angeordnet und unter Druck- und/oder Wärmeeinwirkung gefügt. Das Verfahren wird z. B. bei der Herstellung von Brennstoffzellenstapeln verwendet. Plate elements applied. The adhesive is irradiated for a predetermined period of time and arranged the at least two plate elements in the desired joining position and added under pressure and / or heat. The method is z. B. used in the production of fuel cell stacks.
Darüber hinaus ist aus der DE 10 2010 033 724 A1 ein Verfahren und eine Vorrichtung zum Aufbringen eines Klebstoffes auf Brennstoffzellenbauteile bekannt. Der Klebstoff wird zumindest in einem Arbeitsgang auf einen Transferkörper appliziert und wird anschließend von dem Transferkörper an vorgegebenen Positionen auf zumindest eines der Brennstoffzellenbauteile übertragen. Zudem beschreibt die DE 10 20 0 033 724 A1 eine Vorrichtung, mittels welcher der Klebstoff auf ein Brennstoffzellenbauteil aufbringbar ist. Die Vorrichtung zeichnet sich durch zumindest eine Applikationseinheit zum Moreover, DE 10 2010 033 724 A1 discloses a method and a device for applying an adhesive to fuel cell components. The adhesive is applied to a transfer body at least in one operation and is subsequently transferred from the transfer body to predetermined positions on at least one of the fuel cell components. In addition, DE 10 20 0 033 724 A1 describes a device by means of which the adhesive can be applied to a fuel cell component. The device is characterized by at least one application unit
Aufbringen des Klebstoffes auf einen Transferkörper aus. Apply the adhesive to a transfer body.
Der Erfindung liegt die Aufgabe zugrunde, ein gegenüber dem Stand der Technik verbessertes Verfahren und eine verbesserte Vorrichtung zum Verbinden von zumindest zwei Bestandteilen einer Brennstoffzelle anzugeben. Die Aufgabe wird erfindungsgemäß hinsichtlich des Verfahrens durch die in Anspruch 1 und hinsichtlich der Vorrichtung durch die in Anspruch 6 angegebenen Merkmale gelöst. The invention has for its object to provide a comparison with the prior art improved method and an improved device for connecting at least two components of a fuel cell. The object is achieved with respect to the method by the in claim 1 and in terms of the device by the features specified in claim 6.
Vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche. Advantageous embodiments of the invention are the subject of the dependent claims.
Ein Verfahren zum Verbinden zweier Bestandteile einer Brennstoffzelle mittels Klebstoff sieht erfindungsgemäß vor, dass der Klebstoff mittels eines Siebdruckverfahrens auf zumindest einen vorgegebenen Bereich wenigstens eines Bestandteiles direkt aufgebracht wird und anschließend zumindest zur Anpassung seiner Viskosität und/oder zur Aktivierung des Klebstoffes bestrahlt wird. A method for bonding two components of a fuel cell by means of adhesive according to the invention provides that the adhesive is applied directly to at least one predetermined area of at least one component by means of a screen printing process and then irradiated at least to adjust its viscosity and / or to activate the adhesive.
Da der Klebstoff erfindungsgemäß im Siebdr ck auf zumindest einen vorgegebenen Bereich wenigstens eines Bestandteiles der Brennstoffzelle aufgebracht wird, ist es in Gewinn bringender Weise möglich, eine Taktzeit zur Herstellung von Brennstoffzellen zu erhöhen. Der Klebstoff wird mittels des Siebdruckverfahrens direkt maschinell auf die vorgegebenen Bereiche aufgebracht, so dass eine manuelle Handhabung zur Since the adhesive according to the invention is applied in Siebdr ck on at least a predetermined range of at least one component of the fuel cell, it is possible in profit-making way to increase a cycle time for the production of fuel cells. The adhesive is applied by machine screen directly to the predetermined areas by means of the screen printing process, so that a manual handling for
Beschichtung des zumindest einen Bestandteiles mit dem Klebstoff und dadurch bedingte Fehler im Wesentlichen ausgeschlossen werden können. Coating the at least one component with the adhesive and thus caused errors can be substantially excluded.
Darüber hinaus kann eine Änderung einer Geometrie des zumindest einen vorgegebenen Bereiches, auf weichen der Klebstoff aufgebracht werden soll, vergleichsweise schnell, einfach und ohne hohen Kostenaufwand realisiert werden. In addition, a change in a geometry of the at least one predetermined region to which the adhesive is to be applied can be realized comparatively quickly, simply and without high costs.
Mittels des Aufbringens des Klebstoffes durch Siebdruck kann Material, insbesondere Klebstoff, eingespart werden, da der Klebstoff nur in den vorgegebenen Bereichen auf den Bestandteil aufgebracht wird. Der Klebstoff kann dickenvariabel und selektiv mittels des Siebdruckverfahrens aufgebracht werden. Daraus können dünnere By applying the adhesive by screen printing material, in particular adhesive can be saved, since the adhesive is applied only in the predetermined areas on the component. The adhesive can be applied with variable thickness and selectively by means of the screen printing process. This can be thinner
Klebeverbindungen und dadurch dünnere Brennstoffzellen resultieren, so dass innerhalb des vorgegebenen begrenzten Bauraums eine größere Anzahl Brennstoffzellen im Brennstoffzellenstapel angeordnet werden kann. Die Variabilität in der Dicke kann z.B. mit Hilfe verschiedener unterschiedlich dicker Siebe erreicht werden. Es kann aber auch ein mehrstufiger Aufbring-Prozess vorgesehen sein, bei dem in den einzelnen Stufen verschiedene Siebe mit unterschiedlichen Dicken eingesetzt werden. Adhesive connections and thus thinner fuel cells result, so that within the given limited space a larger number of fuel cells can be arranged in the fuel cell stack. The variability in the thickness can e.g. be achieved with the help of various different thick sieves. However, it is also possible to provide a multi-stage application process in which different screens with different thicknesses are used in the individual stages.
Weiterhin ist es mittels der Bestrahlung des Klebstoffes möglich, die Viskosität desselben einzustellen, so dass Unebenheiten in dem vorgegebenen Bereich, auf weichen der Klebstoff appliziert werden soll, ausgeglichen werden können, z.B. mit Hilfe von IR- Strahlung. Alternativ oder zusätzlich kann die Viskosität des Klebstoffes durch die Furthermore, by means of the irradiation of the adhesive, it is possible to adjust the viscosity thereof, so that unevenness in the predetermined area to which the adhesive is to be applied can be compensated, for example by means of IR radiation. Radiation. Alternatively or additionally, the viscosity of the adhesive through the
Bestrahlung dahingehend eingestellt werden, dass das Risiko eines Verfließens des Klebstoffes beim Verbinden der beiden Bestandteile zumindest verringert ist, z.B. mit Hilfe von UV-Strahlung. Irradiation are set so that the risk of flow of the adhesive when connecting the two components is at least reduced, e.g. with the help of UV radiation.
Besonders bevorzugt wird der Klebstoff mittels Infrarot-Strahlung und/oder Ultraviolett- Strahlung bestrahlt, wobei vorteilhaft vorgesehen ist, den Klebstoff sowohl mittels Infrarot- Strahlung als auch mittels Ultraviolett-Strahlung zu bestrahlen. Particularly preferably, the adhesive is irradiated by means of infrared radiation and / or ultraviolet radiation, wherein it is advantageously provided to irradiate the adhesive both by means of infrared radiation and by means of ultraviolet radiation.
Mittels der Infrarot-Strahlung wird die Viskosität des Klebstoffes eingestellt, bevorzugt verringert, so dass besonders vorteilhaft die Unebenheiten in dem vorgegebenen Bereich des Bestandteiles ausgeglichen werden können, wobei der Klebstoff mittels der By means of the infrared radiation, the viscosity of the adhesive is adjusted, preferably reduced, so that particularly advantageously the unevenness in the predetermined region of the component can be compensated, wherein the adhesive by means of
Ultraviolett-Strahlung aktiviert und die Viskosität des Klebstoffes erhöht wird, so dass das Risiko eines Verfließens des Klebstoffes beim Verbinden der beiden Bestandteile zumindest verringert ist. Der Klebstoff tritt somit nicht zwischen den beiden miteinander verbundenen Bestandteilen hervor, so dass kein Entfernen des Klebstoffes im Ultraviolet radiation is activated and the viscosity of the adhesive is increased, so that the risk of flow of the adhesive when connecting the two components is at least reduced. The adhesive thus does not appear between the two interconnected components, so that no removal of the adhesive in the
Verbindungsbereich erforderlich ist. Connection area is required.
In einer vorteilhaften Ausgestaltung werden die Bestandteile miteinander verbunden und in einem beheizbaren Werkzeug zumindest zum Aushärten des Klebstoffes angeordnet. Bevorzugt sind die beiden Bestandteile zum Verbinden in einem Werkzeug anordbar, in welchem der Klebstoff auch aushärtet, so dass ein Arbeitsgang, nämlich der einer erneuten Positionierung der beiden zu verbindenden Bestandteile, entfallen kann. Dabei können bzw. kann in einer bevorzugten Ausgestaltung ein Druck, eine Zeit und/oder eine Temperatur zum Verbinden der Bestandteile und/oder zum Aushärten des Klebstoffes eingestellt werden. In einer vorteilhaften Ausgestaltung wird zumindest zum Verbinden der beiden Bestandteile nur soviel Druck mittels des Werkzeuges auf die beiden In an advantageous embodiment, the components are connected to one another and arranged in a heatable tool at least for curing of the adhesive. Preferably, the two components for connection in a tool can be arranged, in which the adhesive also hardens, so that a single operation, namely the re-positioning of the two components to be joined, can be omitted. In this case, in a preferred embodiment, a pressure, a time and / or a temperature for connecting the components and / or for curing the adhesive can be adjusted. In an advantageous embodiment, at least for connecting the two components only as much pressure by means of the tool on the two
Bestandteile ausgeübt, dass der Klebstoff aufgrund des wirkenden Drucks nicht verläuft und zwischen den beiden miteinander zu verbindenden Bestandteilen hervortritt. Ingredients exerted that the adhesive does not run due to the pressure acting and between the two components to be joined emerges.
Vorzugsweise wird der Klebstoff auf wenigstens einen Bestandteil zumindest einen Randbereich umlaufend mittels des Siebdruckverfahrens aufgebracht, so dass der Bestandteil mit seinem Randbereich an dem zumindest einen weiteren Bestandteil gehalten wird. Preferably, the adhesive is applied to at least one component at least one edge region circumferentially by means of the screen printing process, so that the component is held with its edge region on the at least one further component.
Darüber hinaus betrifft die Erfindung eine Vorrichtung mit einer Transportvorrichtung, mittels welcher der wenigstens eine Bestandteil zu Arbeitsstationen transportierbar ist, einer Siebdruckvorrichtung zum direkten Aufbringen des Klebstoffes auf zumindest einen vorgegebenen Bereich des wenigstens einen Bestandteiles, und zumindest einer Moreover, the invention relates to a device with a transport device, by means of which the at least one component can be transported to workstations, a screen printing device for direct application of the adhesive to at least a predetermined region of the at least one component, and at least one
Bestrahlungsvorrichtung, mittels welcher eine Viskosität des Klebstoffes einstellbar ist und/oder der Klebstoff aktivierbar ist. Irradiation device, by means of which a viscosity of the adhesive is adjustable and / or the adhesive is activated.
Dadurch, dass eine Vorrichtung sowohl zum Aufbringen des Klebstoffes auf zumindest einen vorgegebenen Bereich zumindest eines Bestandteiles als auch zum Verbinden zumindest der beiden Bestandteile und zum Aushärten des Klebstoffes vorgesehen ist, ist es möglich eine Anlageinvestition zu senken, wodurch Fertigungskosten bei der The fact that a device is provided both for applying the adhesive to at least one predetermined area of at least one component and for connecting at least the two components and for curing the adhesive, it is possible to lower a fixed investment, thereby reducing manufacturing costs in the
Herstellung einer Brennstoffzelle gesenkt werden können, da beispielsweise Taktzeiten erhöht werden können. Production of a fuel cell can be reduced because, for example, cycle times can be increased.
Da wenigstens der mit dem Klebstoff zu beschichtende Bestandteil mittels der Since at least the component to be coated with the adhesive by means of
Transportvorrichtung bewegt wird, kann eine manuelle Handhabung entfallen, wodurch die Sicherheit wenigstens beim Transportvorgang erhöht ist. Transport device is moved, a manual handling can be omitted, whereby the security is increased at least during the transport process.
Um in besonders vorteilhafter Weise die Viskosität des Klebstoffes einstellen zu können und/oder den Klebstoff aktivieren zu können, umfasst die zumindest eine In order to adjust the viscosity of the adhesive in a particularly advantageous manner and / or to activate the adhesive, the at least one comprises
Bestrahlungsvorrichtung Mittel zur Bestrahlung des Klebstoffes mit Infrarot-Strahlung und/oder Ultraviolett-Strahlung. Irradiation device Means for irradiating the adhesive with infrared radiation and / or ultraviolet radiation.
Mittels der Infrarot-Strahlung ist die Viskosität des Klebstoffes einstellbar, wobei die Aktivierung des Klebstoffes mittels der Ultraviolett-Strahlung erfolgt. By means of the infrared radiation, the viscosity of the adhesive is adjustable, wherein the activation of the adhesive takes place by means of the ultraviolet radiation.
In einer vorteilhaften Ausgestaltung sind die zumindest zwei Bestandteile zumindest zum Verbinden in einem Werkzeug anordbar, wobei das Werkzeug beheizbar ist, so dass der Klebstoff insbesondere zum Verbinden zumindest der beiden Bestandteile aktivierbar ist und somit eine dauerhafte stoffschlüssige Verbindung zwischen den beiden Bestandteilen herstellbar ist. In an advantageous embodiment, the at least two components can be arranged at least for connection in a tool, wherein the tool is heatable, so that the adhesive in particular for connecting at least the two components can be activated and thus a permanent cohesive connection between the two components can be produced.
In einer weiteren Ausgestaltung ist eines der zumindest zwei Bestandteile eine In a further embodiment, one of the at least two components is one
Gasdiffusionsschicht der. Brennstoffzelle, welche mittels des Klebstoffes mit einer Gas diffusion layer of. Fuel cell, which by means of the adhesive with a
Katalysatorschicht als weiteren Bestandteil verbindbar ist. Catalyst layer is connectable as a further component.
Ausführungsbeispiele der Erfindung werden im Folgenden anhand von Zeichnungen näher erläutert. Dabei zeigen: Embodiments of the invention are explained in more detail below with reference to drawings. Showing:
Fig. 1 schematisch in perspektivischer Ansicht einen Bestandteil einer Fig. 1 shows a schematic perspective view of a component of a
Brennstoffzelle mit partiell aufgebrachtem Klebstoff nach dem Stand der Technik,  Fuel cell with partially applied adhesive according to the prior art,
Fig. 2 schematisch in perspektivischer Ansicht einen Bestandteil einer Fig. 2 shows a schematic perspective view of a component of a
Brennstoffzelle mit gemäß einem erfindungsgemäßen Verfahren aufgebrachten Klebstoff,  Fuel cell with adhesive applied according to a method of the invention,
Fig. 3 schematisch einen vergrößerten Ausschnitt einer Schnittdarstellung einer Fig. 3 shows schematically an enlarged detail of a sectional view of a
Membran-Elektroden-Anordnung,  Membrane-electrode assembly,
Fig. 4 schematisch einen vergrößerten Ausschnitt der in Figur 3 gezeigten 4 schematically shows an enlarged detail of the one shown in FIG
Schnittdarstellung der Membran-Elektroden-Anordnung und  Sectional view of the membrane-electrode assembly and
Fig. 5 schematisch in perspektivischer Ansicht eine Vorrichtung zum Aufbringen des Klebstoffes auf den Bestandteil der Brennstoffzelle und zum Verbinden von zumindest zwei Bestandteilen der Brennstoffzelle. 5 shows a schematic perspective view of a device for applying the adhesive to the component of the fuel cell and for connecting at least two components of the fuel cell.
Einander entsprechende Teile sind in allen Figuren mit den gleichen Bezugszeichen versehen. Corresponding parts are provided in all figures with the same reference numerals.
In Figur 1 ist schematisch ein Auftrag von Klebstoff 1 auf einem ersten Bestandteil B1 nach dem Stand der Technik dargestellt, wobei der Klebstoff 1 zum Verbinden zweier Bestandteile B1 , B2 einer in Figur 3 näher gezeigten Membran-Elektroden-Anordnung 3 einer Brennstoffzelle vorgesehen ist, wobei in Figur 3 auch ein zweiter Bestandteil B2 dargestellt ist. 1 shows schematically an application of adhesive 1 on a first component B1 according to the prior art, wherein the adhesive 1 is provided for connecting two components B1, B2 of a membrane electrode assembly 3 of a fuel cell shown in more detail in FIG. wherein in Figure 3, a second component B2 is shown.
Bei dem ersten Bestandteil B1 handelt es sich um eine Gasdiffusionsschicht und bei dem zweiten Bestandteil B2 um eine Katalysatorschicht der Membran-Elektroden- Anordnung 3. Bei dem ersten Bestandteil B1 handelt es sich insbesondere um eine Polymerfolie aus Kohlenstofffasern und Polytetrafluorethylen, welches aus Kohlenstoff und Fluor besteht. Dabei können die Kohlenstofffasern mit dem Polytetrafluorethylen imprägniert sein. Nach dem Stand der Technik wird der Klebstoff 1 als Folienklebstoff in Form von reaktivem Schmelzklebstoff vollflächig auf einen Randbereich des ersten The first component B1 is a gas diffusion layer and the second component B2 is a catalyst layer of the membrane electrode assembly 3. The first component B1 is, in particular, a polymer film of carbon fibers and polytetrafluoroethylene, which consists of carbon and fluorine consists. The carbon fibers may be impregnated with the polytetrafluoroethylene. According to the prior art, the adhesive 1 as a film adhesive in the form of reactive hot melt adhesive over its entire surface on an edge region of the first
Bestandteiles B1 aufgebracht und der erste Bestandteil B1 wird mit dem in Figur 3 dargestellten zweiten Bestandteil B2 verklebt. Component B1 applied and the first component B1 is bonded to the second component B2 shown in Figure 3.
Zur Aufbringung des Klebstoffes 1 auf den ersten Bestandteil B1 wird die Klebstofffolie von ihrem Trägermaterial gelöst und beispielsweise mit Hilfe eines Roboters auf dem ersten Bestandteil B1 positioniert. Anschließend daran wird die Klebstofffolie mittels Heizstiften an den ersten Bestandteil B1 geheftet und dadurch positioniert fixiert. For applying the adhesive 1 to the first component B1, the adhesive film is detached from its carrier material and positioned, for example with the aid of a robot, on the first component B1. Subsequently, the adhesive film is stapled by means of heating pins to the first component B1 and thereby fixed in position.
In einem nächsten Verfahrensschritt wird der erste Bestandteil B1 mit der an denselben gehefteten Klebstofffolie in einem in Figur 5 näher gezeigten beheizbaren Werkzeug 2 angeordnet, in welchem die Klebstofffolie zum Verbinden des ersten Bestandteiles B1 mit dem zweiten Bestandteil B2 aufgeschmolzen und anschließend ausgehärtet wird, so dass die beiden Bestandteile B1, B2 stoffschlüssig miteinander verbunden sind. In a next method step, the first component B1 with the adhesive film stapled to it is arranged in a heatable tool 2 shown in greater detail in FIG. 5, in which the adhesive film for joining the first component B1 to the second component B2 is melted and then cured, so that the two components B1, B2 are materially interconnected.
Aus der Verbindung der beiden Bestandteile B1 , B2 mittels der Klebstofffolie als From the connection of the two components B1, B2 by means of the adhesive film as
Klebstoff 1 können beispielsweise viel Verschnitt hinsichtlich der Klebstofffolie und relativ lange Aushärtzeiten resultieren, wobei keine kontaktfreie Aushärtemöglichkeit gegeben ist. Zudem ist eine Verbindung der zwei Bestandteile B1 , B2 mittels der Klebstofffolie kostenintensiv, wobei eine Handhabung der von dem Trägermaterial abgelösten Adhesive 1 can for example result in a lot of waste with respect to the adhesive film and relatively long curing times, whereby no contact-free curing possibility is given. In addition, a connection of the two components B1, B2 by means of the adhesive film is cost-intensive, with a handling of detached from the carrier material
Klebstofffolie erschwert sein kann. Adhesive film can be difficult.
Figur 2 zeigt eine Gasdiffusionsschicht als ersten Bestandteil B1 der Brennstoffzelle mit in vorgegebenen Bereichen gezielt aufgebrachtem Klebstoff 1. FIG. 2 shows a gas diffusion layer as the first constituent B1 of the fuel cell with adhesive 1 selectively applied in predetermined regions.
Zum gezielten Beschichten des ersten Bestandteiles B1 der Membran-Elektroden- Anordnung 3 wird der Klebstoff 1 mittels eines Siebdruckverfahrens, welches in einer Siebdruckvorrichtung 4.1 als Teilvorrichtung einer in Figur 5 gezeigten Vorrichtung 4 durchgeführt wird, auf die vorgegebenen Bereiche des ersten Bestandteiles B1 aufgebracht. For selectively coating the first constituent B1 of the membrane-electrode assembly 3, the adhesive 1 is applied to the predetermined regions of the first constituent B1 by means of a screen printing process, which is carried out in a screen printing device 4.1 as a partial device of a device 4 shown in FIG.
Die Siebdruckvorrichtung 4.1 zum Aufbringen des Klebstoffes 1 ist so eingestellt, dass der Klebstoff 1 in zwei vorgegebenen voneinander beabstandeten parallelen Streifen S auf einen umlaufenden Randbereich des ersten Bestandteiles B1 der Membran- Elektroden-Anordnung 3 aufgebracht wird. Zudem wird der Klebstoff 1 als umlaufender Rahmen R dreier in den ersten Bestandteil B1 eingebrachter Öffnungen 5 zum Verbinden aufgebracht, wobei ein weiterer Streifen S1 des Klebstoffes 1 im Bereich der Öffnungen 5 zwischen einem den Randbereich inneren umlaufenden Streifen S des Klebstoffes 1 auf den ersten Bestandteil B1 aufgebracht ist. Die Öffnungen 5 in dem ersten Bestandteil B1 dienen insbesondere einem Durchleiten von Reaktionsgasen G und eines Kühlmittels durch die Brennstoffzelle. The screen printing device 4.1 for applying the adhesive 1 is adjusted so that the adhesive 1 is applied in two predetermined spaced apart parallel strips S on a peripheral edge region of the first constituent B1 of the membrane electrode assembly 3. In addition, the adhesive 1 as a peripheral frame R three in the first component B1 inserted openings 5 for connecting applied, wherein a further strip S1 of the adhesive 1 is applied to the first component B1 in the region of the openings 5 between an edge of the inner circumferential strip S of the adhesive 1. The openings 5 in the first component B1 serve in particular for passing reaction gases G and a coolant through the fuel cell.
Wie oben beschrieben, wird die Gasdiffusionsschicht als erster Bestandteil B1 mit einer Katalysatorschicht als zweiter Bestandteil B2 der Brennstoffzelle mittels des in den vorgegebenen Bereichen aufgebrachten Klebstoffes 1 verbunden, wie in einem vergrößerten Ausschnitt der Membran-Elektroden-Anordnung 3 in Figur 3 gezeigt ist. As described above, the gas diffusion layer as the first constituent B1 is bonded to a catalyst layer as the second constituent B2 of the fuel cell by means of the adhesive 1 applied in the predetermined regions, as shown in an enlarged section of the membrane-electrode assembly 3 in FIG.
Die Membran-Elektroden-Anordnung 3 weist zwei erste Bestandteile B1 in Form einer Gasdiffusionsschicht auf, wobei die beiden ersten Bestandteile B1 mit jeweils einer Katalysatorschicht als zweiten Bestandteil B2 mittels des Klebstoffes 1 stoffschlüssig verbunden sind. Zwischen den beiden Katalysatorschichten als zweite Bestandteile B2 ist eine Protonen-Austausch-Membran 6 angeordnet, wobei die beiden Katalysatorschichten als zweite Bestandteile B2 und die zwischen diesen angeordnete Protonen-Austausch- Membran 6 eine beschichtete Katalysator-Membran der Membran-Elektroden- Anordnung 3 bildet. The membrane-electrode assembly 3 has two first constituents B1 in the form of a gas diffusion layer, wherein the two first constituents B1 are connected to one catalyst layer as the second constituent B2 by means of the adhesive 1. A proton exchange membrane 6 is arranged between the two catalyst layers as second constituents B2, with the two catalyst layers forming a coated catalyst membrane of the membrane electrode assembly 3 as second constituents B2 and the proton exchange membrane 6 arranged between them ,
Der Klebstoff 1 ist, wie in Figur 2 gezeigt ist, nur in den vorgegebenen Bereichen auf den ersten Bestandteil B1 aufgebracht. As shown in FIG. 2, the adhesive 1 is applied to the first component B1 only in the predetermined regions.
Die Gasdiffusionsschicht als erster Bestandteil B1 der Membran-Elektroden-Anordnung 3 ermöglicht einen Transport eines Reaktionsgases G zur Katalysatorschicht als zweiten Bestandteil B2 und einen Abtransport von Wasser W, wie in einem vergrößerten The gas diffusion layer as the first constituent B1 of the membrane-electrode assembly 3 allows a transport of a reaction gas G to the catalyst layer as a second constituent B2 and a removal of water W, as in an enlarged
Ausschnitt der Gasdiffusionsschicht als erster Bestandteil B2 in Figur 4 näher dargestellt ist. Section of the gas diffusion layer as the first component B2 is shown in Figure 4 in more detail.
Die Gasdiffusionsschicht als erster Bestandteil B1 besteht überwiegend aus The gas diffusion layer as the first constituent B1 consists predominantly of
Kohlenstofffasern, die beispielsweise als kurze Fasern in zufälliger Richtung angeordnet ein Gelege bilden können oder richtungsorientiert als Gewebe angeordnet sein können. Zwischen einzelnen Kohlenstofffasern befinden sich Partikel von Polytetrafluorethylen, wobei die Kohlenstofffasern mit dem Polytetrafluorethylen imprägniert sein können. Carbon fibers, for example, as a short fibers arranged in a random direction can form a clutch or can be arranged directionally oriented as tissue. Between individual carbon fibers are particles of polytetrafluoroethylene, wherein the carbon fibers may be impregnated with the polytetrafluoroethylene.
Die Vorrichtung 4 zum Verbinden zumindest der zwei Bestandteile B1 , B2 einer The device 4 for connecting at least the two components B1, B2 one
Brennstoffzelle mittels Klebstoff 1 , deren Siebdruckvorrichtung 4.1 zur Durchführung der bereichsweisen Beschichtung des ersten Bestandteiles B1 mit Klebstoff 1 vorgesehen ist, ist in Figur 5 näher dargestellt. Fuel cell by means of adhesive 1, the screen printing device 4.1 to carry out the is provided in regions coating of the first constituent B1 with adhesive 1 is shown in more detail in FIG.
Die Vorrichtung 4 weist zudem eine Transportvorrichtung 4.2, eine The device 4 also has a transport device 4.2, a
Bestrahlungsvorrichtung 4.3 und bevorzugt das neben der Transportvorrichtung 4.2 angeordnete beheizbare Werkzeug 2 auf. Irradiation device 4.3 and preferably the arranged next to the transport device 4.2 heated tool 2.
Die Transportvorrichtung 4.2 dient einem Transport der ersten Bestandteile B1 in Form der Gasdiffusionsschichten zu den einzelnen Vorrichtungen 4.1 , 4.3, 2, wobei zwei erste Bestandteile B1 auf einem Plattenelement 7, einem sogenannten Vakuumdrucknest angeordnet und gehalten sind. The transport device 4.2 serves to transport the first constituents B1 in the form of the gas diffusion layers to the individual devices 4.1, 4.3, 2, wherein two first constituents B1 are arranged and held on a plate element 7, a so-called vacuum pressure nest.
Mittels des Plattenelementes 7 und der Transportvorrichtung 4.2 sind die ersten By means of the plate member 7 and the transport device 4.2 are the first
Bestandteile B1 transportierbar, bevorzugt ohne weiter manuell gehandhabt werden zu müssen. Components B1 transportable, preferably without having to be handled manually.
Die beiden auf dem Plattenelement 7 angeordneten und mittels Vakuum fixierten ersten Bestandteile B1 werden in die Siebdruckvorrichtung 4.1 eingefahren. In der The two arranged on the plate member 7 and fixed by vacuum first constituents B1 are retracted into the screen printing device 4.1. In the
Siebdruckvorrichtung 4.1 wird auf die vorgegebenen Bereiche der beiden ersten Screen printing device 4.1 is on the predetermined areas of the first two
Bestandteile B1 in Form der Gasdiffusionsschichten entweder gleichzeitig oder nacheinander der Klebstoff 1 aufgebracht. Dabei wird der Klebstoff 1 vorzugsweise mit einer vorgegebenen Schichtdicke auf die vorgegebenen Bereiche der ersten Components B1 applied in the form of gas diffusion layers either simultaneously or sequentially, the adhesive 1. In this case, the adhesive 1 is preferably with a predetermined layer thickness on the predetermined areas of the first
Bestandteile B1 aufgebracht. Components B1 applied.
Darauffolgend werden die zwei ersten Bestandteile B1 mit dem aufgebrachten Klebstoff 1 mittels des Plattenelementes 7 aus der Siebdruckvorrichtung 4.1 herausgefahren und der Bestrahlungsvorrichtung 4.3 zugeführt. Subsequently, the two first constituents B1 with the applied adhesive 1 are moved out of the screen printing device 4.1 by means of the plate element 7 and fed to the irradiation device 4.3.
In einem ersten Bereich 4.3.1 der Bestrahlungsvorrichtung 4.3 ist zumindest ein erster Strahler 8, mittels welchem Infrarot-Strahlung emittierbar ist, angeordnet, wobei in einem zweiten Bereich 4.3.2 zumindest ein zweiter Strahler 9 zur Emittierung von Ultraviolett- Strahlung angeordnet ist. In a first region 4.3.1 of the irradiation device 4.3, at least one first radiator 8, by means of which infrared radiation is emitted, is arranged, wherein in a second region 4.3.2 at least one second radiator 9 is arranged for the emission of ultraviolet radiation.
Die beiden nebeneinander auf dem Plattenelement 7 angeordneten ersten The two next to each other on the plate member 7 arranged first
Bestandteile B1 werden gleichzeitig dem ersten Bereich 4.3.1 und anschließend dem zweiten Bereich 4.3.2 der Bestrahlungsvorrichtung 4.3 zugeführt und bestrahlt. Die Bestrahlung mittels der Infrarot-Strahlung dient zumindest der Anpassung eines Fließverhaltens, also einer Viskosität des Klebstoffes 1 auf dem ersten Bestandteil B1. Mittels der Infrarot-Strahlung wird der Klebstoff 1 erwärmt, wodurch eine Fließfähigkeit erhöht wird, die Viskosität also verringert wird. Components B1 are simultaneously supplied to the first area 4.3.1 and then to the second area 4.3.2 of the irradiation device 4.3 and irradiated. Irradiation by means of the infrared radiation at least serves to adapt a flow behavior, that is to say a viscosity of the adhesive 1 on the first component B1. By means of the infrared radiation, the adhesive 1 is heated, whereby a flowability is increased, the viscosity is thus reduced.
Durch die Erhöhung des Fließverhaltens, d. h. der Verringerung der Viskosität des Klebstoffes 1 , können mittels desselben gegebenenfalls Unebenheiten in dem Bereich, in welchem der Klebstoff 1 auf den ersten Bestandteil B1 aufgebracht wird, ausgeglichen werden. Die Fließfähigkeit wird durch die Erwärmung erhöht, wodurch sich der Klebstoff 1 verbessert verteilt und sich in eventuell vorhandene Unebenheiten verteilt. By increasing the flow behavior, d. H. the reduction of the viscosity of the adhesive 1, can be compensated by the same possibly unevenness in the area in which the adhesive 1 is applied to the first component B1. The fluidity is increased by the heating, whereby the adhesive 1 is distributed better and distributed in any existing bumps.
Dabei wird die Viskosität des Klebstoffes 1 mittels der Infrarot-Strahlung nur eingestellt, wenn der Klebstoff 1 keine ausreichende Fließfähigkeit aufweist, um eventuelle In this case, the viscosity of the adhesive 1 is adjusted by means of the infrared radiation only when the adhesive 1 does not have sufficient fluidity to eventual
Unebeneinheiten in dem vorgegebenen Bereich auszugleichen. Weist der Klebstoff 1 also eine ausreichende Fließfähigkeit auf, kann die Bestrahlung mittels des ersten Strahlers 8 auch entfallen und die beiden ersten Bestandteile B1 werden mittels des Balance unevenness units in the given area. If the adhesive 1 thus has sufficient flowability, the irradiation by means of the first radiator 8 can also be dispensed with, and the two first constituents B1 are removed by means of the first
Plattenelementes 7 gleich nach dem Aufbringen des Klebstoffes 1 in der Plate element 7 immediately after the application of the adhesive 1 in the
Siebdruckvorrichtung 4.1 dem zweiten Bereich 4.3.2 der Bestrahlungsvorrichtung 4.3 zugeführt. Screen printing device 4.1 the second area 4.3.2 of the irradiation device 4.3 supplied.
Nach dem Erwärmen des Klebstoffes 1 auf den ersten Bestandteilen B1 werden diese mittels des Plattenelementes 7 dem zweiten Bereich 4.3.2 der After the adhesive 1 has been heated on the first constituents B1, these are heated to the second region 4.3.2 by means of the plate element 7
Bestrahlungsvorrichtung 4.3 zugeführt. Irradiation device 4.3 supplied.
In dem zweiten Bereich 4.3.2 ist der zweite Strahler 9, mittels dem Ultraviolett-Strahlung emittiert wird, angeordnet. Die beiden auf dem Plattenelement 7 angeordneten ersten Bestandteile B1 werden mit der Ultraviolett-Strahlung des zweiten Strahlers 9 bestrahlt, um im Klebstoff 1 enthaltene Photoinitiatoren zu aktivieren. Weiterhin wird mittels der Bestrahlung der beiden ersten Bestandteile B1 mit der Ultraviolett-Strahlung die Viskosität des Klebstoffes 1 erhöht, wodurch der Klebstoff 1 im Vergleich zähflüssiger wird, also die Fließfähigkeit des Klebstoffes 1 verringert wird. In the second area 4.3.2, the second radiator 9, by means of which ultraviolet radiation is emitted, is arranged. The two arranged on the plate member 7 first constituents B1 are irradiated with the ultraviolet radiation of the second radiator 9 to activate contained in the adhesive 1 photoinitiators. Furthermore, by means of the irradiation of the two first constituents B1 with the ultraviolet radiation, the viscosity of the adhesive 1 is increased, as a result of which the adhesive 1 becomes more viscous in comparison, ie the flowability of the adhesive 1 is reduced.
Nach dem Bestrahlen mittels der Ultraviolett-Strahlung werden die beiden ersten After irradiation by means of ultraviolet radiation, the first two become
Bestandteile B1 jeweils mit einem zweiten Bestandteil B2 verbunden, d. h. gefügt, wobei es sich bei dem zweiten Bestandteil B2, wie oben beschrieben, um jeweils eine Components B1 are each connected to a second component B2, d. H. joined, wherein it is the second component B2, as described above, each one
Katalysatorschicht der Brennstoffzelle handelt. Vorzugsweise wird der jeweilige erste Bestandteil B1 am Ende der Catalyst layer of the fuel cell is. Preferably, the respective first component B1 at the end of
Transportvorrichtung 4.2 zur Anordnung in dem beheizbaren Werkzeug 2 bereitgestellt. Dazu ist vorgesehen, dass der zweite Bestandteil B2 zum Verbinden mit dem ersten Bestandteil B1 bereits in dem beheizbaren Werkzeug 2 angeordnet ist. Alternativ wird zuerst der erste Bestandteil B1 und anschließend wird der zweite Bestandteil B2 in dem beheizbaren Werkzeug 2 angeordnet. Transport device 4.2 provided for arrangement in the heated tool 2. For this purpose, it is provided that the second component B2 is already arranged in the heated tool 2 for connection to the first component B1. Alternatively, first the first component B1 and then the second component B2 in the heatable tool 2 is arranged.
Vorzugsweise werden die beiden Bestandteile B1 , B2 mittels des beheizbaren Preferably, the two components B1, B2 by means of the heated
Werkzeuges 2 aneinander gepresst. Dazu ist das beheizbare Werkzeug 2 derart ausgebildet, dass ein Druck, mit welchem die beiden Bestandteile B1 , B2 aneinander gepresst werden, eine Temperatur, die mittels des beheizbaren Werkzeuges 2 auf die Bestandteile B1 , B2 wirkt, sowie eine Zeit, beispielsweise für das Beheizen des Tool 2 pressed together. For this purpose, the heatable tool 2 is designed such that a pressure with which the two components B1, B2 are pressed against each other, a temperature which acts on the components B1, B2 by means of the heatable tool 2, as well as a time, for example for heating of
Werkzeuges 2 und/oder das Aneinanderpressen, einstellbar ist. Der Druck zum Tool 2 and / or the juxtaposition, is adjustable. The pressure to
Aneinanderpressen der Bestandteile B1 , B2 wird nur so hoch eingestellt, dass der Klebstoff 1 beim Verbinden wenig bis gar nicht verläuft, die Bestandteile B1 , B2 aber dennoch aneinander gepresst und somit verbunden werden. Pressing together the components B1, B2 is set only so high that the adhesive 1 when connecting little to no runs, the components B1, B2 but still pressed together and thus connected.
Bevorzugt wird in dem beheizbaren Werkzeug 2 ein vollständiger Schichtverbund der Membran-Elektroden-Anordnung 3 angeordnet und miteinander verbunden, wobei die Membran-Elektroden-Anordnung 3 jeweils zwei erste Bestandteile B1 , zwei zweite Bestandteile B2 und die Protonen-Austausch-Membran 6 umfasst. In the heatable tool 2, a complete layer composite of the membrane electrode assembly 3 is preferably arranged and connected to one another, the membrane electrode assembly 3 each comprising two first constituents B1, two second constituents B2 and the proton exchange membrane 6.
Dabei verbleiben die miteinander zu verbindenden Bestandteile B1, B2 der In this case, the components B1, B2 to be joined together remain
Brennstoffzelle in dem beheizbaren Werkzeug 2 bis der Klebstoff vollständig ausgehärtet ist. Fuel cell in the heated tool 2 until the adhesive is completely cured.
Dadurch, dass der erste Bestandteil B1 mittels der Vorrichtung 4 transportiert wird, mit dem Klebstoff 1 beschichtet wird und anschließend mit dem zweiten Bestandteil B2 verbunden wird, kann eine Anlageinvestition gesenkt werden, woraus weiterhin The fact that the first component B1 is transported by means of the device 4, is coated with the adhesive 1 and is then connected to the second component B2, a plant investment can be reduced, which further
Fertigungskosten zur Herstellung einer Membran-Elektroden-Anordnung 3 verringert werden können. Manufacturing costs for producing a membrane-electrode assembly 3 can be reduced.
Der erste Bestandteil wird mittels der Transportvorrichtung als Bestandteil der Vorrichtung bewegt, wodurch Taktzeiten bei der Fertigung erhöht werden können. Hinsichtlich des Aufbringens des Klebstoffes 1 auf den ersten Bestandteil B1 ist gegenüber dem in Figur 1 beschriebenen Stand der Technik eine Materialeinsparung in Bezug auf den Klebstoff 1 und dadurch wiederum eine Kostenersparnis erzielbar. The first component is moved by means of the transport device as part of the device, whereby cycle times during production can be increased. With regard to the application of the adhesive 1 to the first component B1 is compared to the prior art described in Figure 1, a material savings with respect to the adhesive 1 and thereby in turn a cost savings achieved.
Ändert sich eine Form der vorgegebenen Bereiche, auf welche der Klebstoff 1 mittels der Siebdruckvorrichtung 4.1 aufgebracht werden soll, so ist die Änderung einer If a shape of the predetermined regions to which the adhesive 1 is to be applied by means of the screen printing device 4.1 changes, then the change is a
Klebstoffgeometrie in der Siebdruckvorrichtung 4.1 vergleichsweise einfach und ohne wesentliche Kostensteigerung hinsichtlich der Fertigung durchführbar. Adhesive geometry in the screen printing device 4.1 comparatively easy and feasible without significant cost increase in terms of production.
Bezugszeichenliste LIST OF REFERENCE NUMBERS
1 Klebstoff 1 adhesive
2 beheizbares Werkzeug  2 heated tools
3 Membran-Elektroden-Anordnung  3 membrane electrode assembly
4 Vorrichtung  4 device
4.1 Siebdruckvorrichtung  4.1 screen printing device
4.2 Transportvorrichtung  4.2 Transport device
4.3 Bestrahlungsvorrichtung  4.3 Irradiation device
4.3.1 erster Bereich  4.3.1 first area
4.3.2 zweiter Bereich  4.3.2 second area
5 Öffnung  5 opening
6 Protonen-Austausch-Membran  6 proton exchange membrane
7 Plattenelement  7 plate element
8 erster Strahler  8 first radiator
9 zweiter Strahler  9 second radiator
B1 erster Bestandteil B1 first component
B2 zweiter Bestandteil  B2 second component
G Reaktionsgas G reaction gas
R Rahmen  R frame
S Streifen  S stripes
S1 weiterer Streifen  S1 more stripes
W Wasser  W water

Claims

Patentansprüche claims
1. Verfahren zum Verbinden zumindest zweier Bestandteile (B1, B2) einer 1. A method for connecting at least two components (B1, B2) of a
Brennstoffzelle mittels Klebstoff (1),  Fuel cell by means of adhesive (1),
dadurch gekennzeichnet, dass der Klebstoff (1) mittels eines Siebdruckverfahrens auf zumindest einen vorgegebenen Bereich wenigstens eines  characterized in that the adhesive (1) by means of a screen printing process on at least one predetermined area at least one
Bestandteiles (B1 , B2) direkt aufgebracht wird und anschließend zumindest zur Ingredient (B1, B2) is applied directly and then at least to
Anpassung seiner Viskosität und/oder zur Aktivierung des Klebstoffes (1) bestrahlt wird. Adjustment of its viscosity and / or for activation of the adhesive (1) is irradiated.
2. Verfahren nach Anspruch 1 , 2. The method according to claim 1,
dadurch gekennzeichnet, dass die Viskosität des Klebstoffes (1) anhand einer Bestrahlung mit Infrarot-Strahlung eingestellt wird.  characterized in that the viscosity of the adhesive (1) is adjusted by means of irradiation with infrared radiation.
3. Verfahren nach Anspruch 1 oder 2, 3. The method according to claim 1 or 2,
dadurch gekennzeichnet, dass die Aktivierung des Klebstoffes (1) anhand einer Bestrahlung mit Ultraviolett-Strahlung durchgeführt wird.  characterized in that the activation of the adhesive (1) is carried out by means of irradiation with ultraviolet radiation.
4. Verfahren nach einem der vorhergehenden Ansprüche, 4. The method according to any one of the preceding claims,
dadurch gekennzeichnet, dass die Bestandteile (B1 , B2) miteinander verbunden werden und in einem beheizbaren Werkzeug (2) zumindest zum Aushärten des Klebstoffes (1) angeordnet werden.  characterized in that the components (B1, B2) are joined together and arranged in a heatable tool (2) at least for curing of the adhesive (1).
5. Verfahren nach Anspruch 4, 5. The method according to claim 4,
dadurch gekennzeichnet, dass ein Druck, eine Zeit und/oder eine Temperatur zum Verbinden der Bestandteile (B1 , B2) und/oder zum Aushärten des Klebstoffes (1) eingestellt werden bzw. wird. characterized in that a pressure, a time and / or a temperature for Connecting the components (B1, B2) and / or for curing the adhesive (1) can be adjusted or becomes.
6. Verfahren nach einem der vorhergehenden Ansprüche, 6. The method according to any one of the preceding claims,
dadurch gekennzeichnet, dass der Klebstoff (1) auf wenigstens ein  characterized in that the adhesive (1) on at least one
Bestandteil (B1 ,B2) zumindest einen Randbereich umlaufend aufgebracht wird.  Component (B1, B2) is applied circumferentially at least one edge region.
7. Vorrichtung (4) zur Durchführung des Verfahrens nach einem der Ansprüche 1 bis 6, umfassend eine Transportvorrichtung (4.2), mittels welcher der wenigstens eine Bestandteil (B1 , B2) zu Arbeitsstationen transportierbar ist, eine 7. Device (4) for carrying out the method according to one of claims 1 to 6, comprising a transport device (4.2), by means of which the at least one component (B1, B2) is transportable to workstations, a
Siebdruckvorrichtung (4.1) zum direkten Aufbringen des Klebstoffes (1) auf zumindest einen vorgegebenen Bereich des wenigstens einen  Screen printing device (4.1) for direct application of the adhesive (1) to at least one predetermined area of the at least one
Bestandteiles (B1 , B2), und zumindest einer Bestrahlungsvorrichtung (4.3), mittels welcher eine Viskosität des Klebstoffes (1) einstellbar ist und/oder der Klebstoff (1) aktivierbar ist.  Ingredient (B1, B2), and at least one irradiation device (4.3), by means of which a viscosity of the adhesive (1) is adjustable and / or the adhesive (1) can be activated.
8. Vorrichtung (4) nach Anspruch 7, 8. Device (4) according to claim 7,
dadurch gekennzeichnet, dass die zumindest eine Bestrahlungsvorrichtung (4.3) Mittel (8,9) zur Bestrahlung des Klebstoffes (1) mit Infrarot- Strahlung und/oder Ultraviolett-Strahlung umfasst.  characterized in that the at least one irradiation device (4.3) comprises means (8,9) for irradiating the adhesive (1) with infrared radiation and / or ultraviolet radiation.
9. Vorrichtung (4) nach Anspruch 8, 9. Device (4) according to claim 8,
dadurch gekennzeichnet, dass ein Werkzeug (2) zur gleichzeitigen Aufnahme der zumindest zwei Bestandteile (B1 , B2) zumindest während des Verbindens vorgesehen ist.  characterized in that a tool (2) for simultaneously receiving the at least two components (B1, B2) is provided at least during the connection.
10. Vorrichtung (4) nach Anspruch 9, 10. Device (4) according to claim 9,
dadurch gekennzeichnet, dass das Werkzeug (2) beheizbar ist.  characterized in that the tool (2) is heatable.
PCT/EP2013/002070 2012-07-26 2013-07-11 Method and device for joining at least two components of a fuel cell WO2014015954A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012014756.2 2012-07-26
DE102012014756.2A DE102012014756A1 (en) 2012-07-26 2012-07-26 Method and device for connecting at least two components of a fuel cell

Publications (1)

Publication Number Publication Date
WO2014015954A1 true WO2014015954A1 (en) 2014-01-30

Family

ID=48832859

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2013/002070 WO2014015954A1 (en) 2012-07-26 2013-07-11 Method and device for joining at least two components of a fuel cell

Country Status (2)

Country Link
DE (1) DE102012014756A1 (en)
WO (1) WO2014015954A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114450828A (en) * 2019-09-30 2022-05-06 燃料电池中心两合股份有限公司 Method for joining fuel cell components

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016006212A1 (en) * 2016-05-19 2017-11-23 Daimler Ag Method and device for joining components
DE102020214759A1 (en) 2020-11-25 2022-05-25 Robert Bosch Gesellschaft mit beschränkter Haftung Process for joining two bodies, joining component, fuel cell and fuel cell stack
DE102022116561A1 (en) * 2022-07-04 2024-01-04 Mb Atech Gmbh Method and device for curing an adhesive between electrode layers of an electrode stack

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10251775A1 (en) 2002-11-07 2004-05-19 Daimlerchrysler Ag Fuel cell joining process for joining two bipolar plates in a fuel cell unit applies a photoactivated/curing adhesive to one of two bipolar plates to be irradiated over a preset time span
US20060078781A1 (en) * 2004-10-08 2006-04-13 3M Innovative Properties Company Curable subgasket for a membrane electrode assembly
US20070231689A1 (en) * 2004-04-13 2007-10-04 Umicore Ag & Co Kg Multi-Layer Membrane-Electrode-Assembly (Ml-Mea) and Method for Its Manufacture
WO2008040682A1 (en) * 2006-10-02 2008-04-10 Basf Se Method for the production of a membrane electrode unit
US20110038767A1 (en) * 2009-08-11 2011-02-17 Baril Corporation Microfluidic diagnostic device
DE102010033724A1 (en) 2010-08-07 2011-05-12 Daimler Ag Method for applying an adhesive on fuel cell component, comprises applying the adhesive in a process on a transfer body and subsequently transferring from the transfer body at given position on the fuel cell component

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1312126A2 (en) * 2000-08-23 2003-05-21 Dana Corporation Insulating and sealing composition suitable for fuel cell assemblies
JP4882221B2 (en) * 2004-11-17 2012-02-22 日産自動車株式会社 Separator bonding method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10251775A1 (en) 2002-11-07 2004-05-19 Daimlerchrysler Ag Fuel cell joining process for joining two bipolar plates in a fuel cell unit applies a photoactivated/curing adhesive to one of two bipolar plates to be irradiated over a preset time span
US20070231689A1 (en) * 2004-04-13 2007-10-04 Umicore Ag & Co Kg Multi-Layer Membrane-Electrode-Assembly (Ml-Mea) and Method for Its Manufacture
US20060078781A1 (en) * 2004-10-08 2006-04-13 3M Innovative Properties Company Curable subgasket for a membrane electrode assembly
WO2008040682A1 (en) * 2006-10-02 2008-04-10 Basf Se Method for the production of a membrane electrode unit
US20110038767A1 (en) * 2009-08-11 2011-02-17 Baril Corporation Microfluidic diagnostic device
DE102010033724A1 (en) 2010-08-07 2011-05-12 Daimler Ag Method for applying an adhesive on fuel cell component, comprises applying the adhesive in a process on a transfer body and subsequently transferring from the transfer body at given position on the fuel cell component

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114450828A (en) * 2019-09-30 2022-05-06 燃料电池中心两合股份有限公司 Method for joining fuel cell components
CN114503315A (en) * 2019-09-30 2022-05-13 燃料电池中心两合股份有限公司 Method for joining fuel cell components

Also Published As

Publication number Publication date
DE102012014756A1 (en) 2014-01-30

Similar Documents

Publication Publication Date Title
EP2739427B1 (en) Joining of sheet material having an intermediate sandwich layer of thermoplastic
DE19919783B4 (en) Manufacturing method for a formed by deep drawing, at least two-layer composite sheet metal part
EP2893200B1 (en) Method for producing a raised seam
WO2009056294A1 (en) Structural element for a vehicle seat
EP1769877A1 (en) Process and device for producing a weldment between the surfaces of two flat workpieces, with total running of the contacting surface of the friction stir tool into the surface of the second workpiece opposing the first workpiece
WO2014015954A1 (en) Method and device for joining at least two components of a fuel cell
EP2415601A2 (en) Method and device for producing a sandwich board and core layer for a sandwich board
EP2893201B1 (en) Method for producing a raised seam
WO2010069599A1 (en) Device and method for laser beam joining
WO2013087138A1 (en) Method for joining two essentially metal sheet-type workpieces using friction squeeze welding
DE102006014313A1 (en) Process for producing a molded part
WO2011015345A2 (en) Method and devices for connecting two material layers
DE102018202798B4 (en) Method and device for manufacturing a toroidal bicycle inner tube
WO2008116551A1 (en) Method for fixing structurally bonded workpieces, particularly for the laser welding of bonded workpieces
DE10342921B4 (en) Process for welding plastics and a welding agent required for this purpose
DE102010017238A1 (en) Application method for applying a silver layer to a surface of a steel and reactor substrate
DE10331205A1 (en) Roll folding device to produce edging on workpiece has a heating device to heat at least one region of edging to be folded during folding process
DE102017116902A1 (en) Body joining method by means of adhesive
DE10061635A1 (en) Forming and joining process of at least two components and device
DE102005027703B3 (en) Production process for hollow component involves shaping or directing one sheet cutout so that in assembled state edge region projects beyond edge of other cutout
DE102017204829A1 (en) Method for connecting two components
DE10204474A1 (en) Clamping device and method for laser welding coated metal sheets
WO2018059749A1 (en) Method for joining a first component and a second component
AT510188B1 (en) METHOD FOR PRODUCING A MULTIPLE INSULATING GLASS ELEMENT
EP3260277A1 (en) Method and device for the thermal joining of a layer made of a plastic material onto a plastic pipe

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 13739609

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 13739609

Country of ref document: EP

Kind code of ref document: A1