• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A method of producing a membrane-electrode assembly, MEA where a quasi-endless strip of a membrane material doped with a liquid electrolyte is laminated with electrodes and edge regions of the strip and spaces between the electrodes are pressed free from surplus electrolyte.
    公开号:DK201970682A1
    申请号:DKP201970682
    申请日:2019-11-05
    公开日:2021-02-04
    发明作者:Bang Mads；Gromadskyi Denys；Bork Jakob；Hromadska Larysa；Henrik Frensch Steffen
    申请人:Blue World Tech Holding Aps；
    IPC主号:
    专利说明:

    [2] [2].
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    [15] [15] Kohler J, Starz KA, Wittpahl S, Diehl M. Process for producing a membrane electrode assembly for fuel cells. USA Patent (2006) US 6,998,149 B2
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    [17] [17] Korte C, Conti F, Wackerl J, Lehnert W. Phosphoric acid and its interactions with polybenzimidazole-type polymers. High temperature Polymer Electrolyte Mem- brane Fuel Cells, Springer (2016) 169-194
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    权利要求:
    Claims (16)
    [1] 1. A method of producing a membrane-electrode assembly, MEA, the method com- prising providing a quasi-endless strip of a membrane material doped with a liquid electrolyte; providing electrodes for assembly with the membrane strip and attaching the electrodes to the liquid-doped membrane strip; laminating the electrodes onto the strip in a calendering lamination station by guiding the strip in between two opposite- ly positioned lamination rollers and compressing the electrodes and the strip for lami- nation by the two lamination rollers.
    [2] 2. A method according to claim 1, wherein the strip has a first width and the elec- trodes have a second width that is less than the first width; wherein the combining of the electrodes with the liquid-doped membrane strip implies positioning the electrodes between two opposite side edge regions of the strip, which are not covered by the electrodes; wherein the method further comprises moving the strip after the lamination station through a further calendering station, wherein the oppositely placed calender- ing rollers of the further calendering station have a central region matching the loca- tion of the electrodes on the strip and a side region matching the side edge region of the strip when the strip with the electrodes is guided through the further calendering region; wherein the central region of at least one of the calendering rollers is provided as a cavity in order for the calendering rollers pressing on and along the side edge regions of the strip but not onto the electrodes and removing surplus electrolyte from the edge regions of the strip by pressing the rollers onto the edge regions of the strip.
    [3] 3. A method according to claim 2, wherein the method comprises providing the elec- trodes as pieces and not as an endless strip, and wherein the positioning of the elec- trodes onto the strip implies the provision of a spacing between the electrodes in a longitudinal direction of the strip, and wherein the at least one of the calendering roll- ers in addition to the side region and the cavity has a cross bar extending from one side region to the opposite side region, wherein the circumference of the at least one calendering roller with the cavity is equal to the periodic length from one electrode to the next so that the pressing of the cross bar onto the strip is synchronized with the spacing, and the method comprises pressing the cross bar onto the spaces between the
    DK 2019 70682 A1 18 electrodes on the strip during the transport of the strip through the calendering rollers for removing surplus electrolyte from the spaces between the electrodes.
    [4] 4. A method according to claim 2 or 3, wherein the method comprises attaching elec- trodes on both sides of the strip and wherein both of the calendering rollers are pro- vided with a cavity and elevated side regions.
    [5] 5. A method according to any preceding claim, wherein the method comprises using a binder for binding the electrodes onto the membrane strip in the lamination process, the binder being a polymer and having a glass transition temperature, the method comprising adjusting the temperature for the lamination process to a temperature above the glass transition temperature but below a temperature that causes bubbles in the electrolyte.
    [6] 6. A method according to claim 5, wherein the electrolyte is orthophosphoric acid, and the lamination temperature is below 150°C.
    [7] 7. A method according to claim 5 or 6, wherein the binder is PTFE, and the lamina- tion temperature is above 110°C.
    [8] 8. A method according to any preceding claim, wherein the electrodes are provided as a roll material and cut into pieces in a continuous process, wherein the electrodes pieces are held by vacuum onto a vacuum roller and transported to the membrane strip and positioned from the vacuum roller onto the strip.
    [9] 9. A method according to any preceding claim, wherein the membrane strip with the attached electrodes is cut for providing separate MEA pieces; and wherein multiple of such MEA pieces are automatically inserted between bipolar plates for automated production of a fuel cell stack, including end plates for the stack.
    [10] 10. A method according to claim 9, wherein the method comprises providing the fuel cells in the fuel cell stack as high temperature proton exchange membrane, HT- PEM, fuel cells.
    DK 2019 70682 A1 19
    [11] 11. A method according to any preceding claim, wherein the method comprises providing the doped membrane as a H:;PO4-doped PBI membrane.
    [12] 12. A production machine for producing a membrane-electrode assembly, MEA, the machine comprising - a membrane supply station with a first roller for supplying an endless strip of a membrane material doped with a liquid electrolyte; - an electrode supply station with a pair of opposite electrode supply rollers, the ma- chine comprising a first conveyor for conveying the strip from the membrane supply station through the electrode supply station between the electrode supply rollers; wherein the electrode supply station is configured for placing electrodes onto the membrane strip with a predetermined longitudinal spacing between consecutive elec- trodes on the strip: - a lamination station comprising lamination rollers for pressing the electrodes onto the strip in a lamination process; - a second conveyor for conveying the strip from the electrode supply station to the lamination station, - a calendering station with opposite calendering rollers, wherein the calendering roll- ers have a central region matching the location of the electrodes when attached to the strip and a side region matching the side edge region of the strip when the strip with the electrodes is guided through the calendering region; wherein the central region of at least one of the calendering rollers is provided as a cavity having a depth at least half of a thickness of the strip with the electrodes in order at least one of the calender- ing rollers pressing along the side edge regions of the strip but not onto the electrodes.
    [13] 13. A machine according to claim 12, wherein the machine is configured for heating the lamination rollers to temperatures above 100°C.
    [14] 14. A machine according to claim 12 or 13, wherein at least one of the calender- ing rollers in addition to the side region and the cavity has a cross bar extending from one side region to the opposite site region, wherein the thickness of the cross bar is equal to the spacing between the electrodes when attached to the strip, and wherein the circumference of the at least one calendering roller with the cavity is equal to the
    DK 2019 70682 A1 20 periodic length from one electrode to the next in order for the pressing of the cross bar onto the strip synchronized into the predetermined longitudinal spacing between con- secutive electrodes on the strip when the strip is conveyed through the calendering station during operation of the machine.
    [15] 15. A machine according to claim 14, wherein the machine comprises a MEA cutting station for cutting the strip into separate MEAs; and wherein the machine fur- ther comprises a BPP supply station for automatically supplying bipolar plates, BPP, and wherein the machine is configured for automatically assembling a fuel cell stack by providing end plates for stack and for inserting the separate MEAs automatically in between multiple subsequently stacked bipolar plates.
    [16] 16. A machine according to anyone of the claims 12-15, wherein the electrode supply rollers of the electrode supply station are vacuum rollers for fixing the elec- trodes against the electrode supply rollers, until depositing the electrodes onto the strip.
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    同族专利:
    公开号 | 公开日
    WO2021089093A1|2021-05-14|
    DK180362B1|2021-02-04|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US6547229B1|2000-11-22|2003-04-15|3M Innovative Properties Company|Stacking apparatus and method for laminated products and packaging|
    CN1890828B|2003-12-02|2010-05-05|日产自动车株式会社|Manufacture of fuel cell|
    CN1977415B|2004-07-01|2010-07-28|尤米科尔股份公司及两合公司|Lamination process for manufacture of integrated membrane-electrode-assemblies|
    DE102004054503A1|2004-11-11|2006-05-24|Umicore Ag & Co. Kg|Method and device for producing membrane-electrode assemblies|
    KR100658675B1|2004-11-26|2006-12-15|삼성에스디아이 주식회사|Electrode for fuel cell, fuel cell comprising the same, and method for preparing the smme|
    KR100829060B1|2006-12-22|2008-05-19|한국과학기술연구원|A membrane-electrode binder having a dual electrode, the manufacturing method thereof, and a fuel electrode comprising thereof|
    EP3379629A4|2015-11-19|2019-04-17|Toray Industries, Inc.|Method and device for manufacturing assembly that includes polymer electrolyte membrane|
    JP6661401B2|2016-02-22|2020-03-11|株式会社Ｓｃｒｅｅｎホールディングス|Manufacturing equipment for membrane / electrode assemblies|
    法律状态:
    2021-02-04| PAT| Application published|Effective date: 20210204 |
    2021-02-04| PME| Patent granted|Effective date: 20210204 |
    优先权:
    申请号 | 申请日 | 专利标题
    DKPA201970682A|DK180362B1|2019-11-05|2019-11-05|Method of producing membrane-electrode assemblies and machine therefore|DKPA201970682A| DK180362B1|2019-11-05|2019-11-05|Method of producing membrane-electrode assemblies and machine therefore|
    PCT/DK2020/050294| WO2021089093A1|2019-11-05|2020-10-28|Method of producing membrane-electrode assemblies and machine therefore|
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