JP2022022636A - 金属セパレータ及び燃料電池スタック - Google Patents
金属セパレータ及び燃料電池スタック Download PDFInfo
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 199
- 239000002184 metal Substances 0.000 title claims abstract description 199
- 239000000446 fuel Substances 0.000 title claims abstract description 34
- 230000002093 peripheral effect Effects 0.000 claims abstract description 124
- 239000011324 bead Substances 0.000 claims abstract description 105
- 238000007789 sealing Methods 0.000 claims abstract description 59
- 230000000903 blocking effect Effects 0.000 claims abstract 2
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- 239000007800 oxidant agent Substances 0.000 abstract description 74
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
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- 239000004977 Liquid-crystal polymers (LCPs) Substances 0.000 description 2
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- 229910001260 Pt alloy Inorganic materials 0.000 description 2
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
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- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
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- 238000005219 brazing Methods 0.000 description 1
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- 239000004744 fabric Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- UQSQSQZYBQSBJZ-UHFFFAOYSA-N fluorosulfonic acid Chemical compound OS(F)(=O)=O UQSQSQZYBQSBJZ-UHFFFAOYSA-N 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 229920000867 polyelectrolyte Polymers 0.000 description 1
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- 229920000098 polyolefin Polymers 0.000 description 1
- 229920001955 polyphenylene ether Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- 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
- H01M8/0204—Non-porous and characterised by the material
- H01M8/0206—Metals or alloys
-
- 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
- H01M8/0258—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant
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- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0258—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant
- H01M8/026—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant characterised by grooves, e.g. their pitch or depth
-
- 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
- H01M8/0258—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant
- H01M8/0263—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant having meandering or serpentine paths
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
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- 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
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- H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
- H01M8/0273—Sealing or supporting means around electrodes, matrices or membranes with sealing or supporting means in the form of a frame
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- 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
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- H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
- H01M8/0276—Sealing means characterised by their form
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- H—ELECTRICITY
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- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
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- H01M8/1004—Fuel cells with solid electrolytes characterised by membrane-electrode assemblies [MEA]
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- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/10—Fuel cells with solid electrolytes
- H01M8/1007—Fuel cells with solid electrolytes with both reactants being gaseous or vaporised
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- H01M8/2465—Details of groupings of fuel cells
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- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
- H01M8/2465—Details of groupings of fuel cells
- H01M8/247—Arrangements for tightening a stack, for accommodation of a stack in a tank or for assembling different tanks
- H01M8/248—Means for compression of the fuel cell stacks
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- H01—ELECTRIC ELEMENTS
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- H01M2008/1095—Fuel cells with polymeric electrolytes
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- 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
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- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
Abstract
Description
30…第1金属セパレータ 31…第1セパレータ本体
32…第2金属セパレータ 33…第2セパレータ本体
40…電解質膜 42…アノード電極
44…カソード電極 48…酸化剤ガス流路(反応ガス流路)
48a1…第1端部突起(流路幅方向端部)
56…第1外周側シール部 58…第1金属ビード部
66…第1バイパス止め部 72…第1凹状シール部
76…第1連結壁 78、112…中間凸状部
82…燃料ガス流路(反応ガス流路)
82a1…第2端部突起(流路幅方向端部)
90…第2外周側シール部 92…第2金属ビード部
100…第2バイパス止め部 106…第2凹状シール部
110…第2連結壁 S1、S2、Sa、Sb…隙間
Claims (11)
- 電解質膜の両側に電極が配設されてなる電解質膜・電極構造体に積層されるように燃料電池スタックに組み込むための金属セパレータであって、
前記金属セパレータには、当該金属セパレータが前記燃料電池スタックに組み込まれた際に、セパレータ厚さ方向の圧縮荷重が付与され、
前記金属セパレータは、
板状のセパレータ本体と、
前記セパレータ本体の一端から他端に向かって前記電極に沿って反応ガスを流す反応ガス流路と、
前記反応ガス流路を囲んで反応ガスの漏れを防止するための外周側シール部と、を含み、
前記外周側シール部は、前記圧縮荷重によって弾性変形できるように前記セパレータ本体に一体的に突出成形された金属ビード部を有し、
前記反応ガス流路の流路幅方向端部と前記外周側シール部との間の空間には、当該空間の一部を塞ぐことにより反応ガスのバイパスを防止するバイパス止め部が設けられ、
前記バイパス止め部と前記金属ビード部との間には、前記バイパス止め部を前記金属ビード部から離間させる隙間が設けられている、金属セパレータ。 - 請求項1記載の金属セパレータであって、
前記バイパス止め部は、前記セパレータ本体に一体的に突出成形されるとともに一方向に延在している、金属セパレータ。 - 請求項2記載の金属セパレータであって、
前記バイパス止め部は、前記反応ガス流路の流路幅方向に沿って延在している、金属セパレータ。 - 請求項1~3のいずれか1項に記載の金属セパレータであって、
前記金属ビード部と前記バイパス止め部との間の前記隙間は、前記セパレータ本体の表面から前記外周側シール部の頂部まで延在している、金属セパレータ。 - 請求項1~4のいずれか1項に記載の金属セパレータであって、
前記バイパス止め部のうち前記セパレータ本体とは反対側の端部は、前記外周側シール部の頂部よりも前記セパレータ本体側に位置している、金属セパレータ。 - 請求項1~5のいずれか1項に記載の金属セパレータであって、
前記外周側シール部は、前記セパレータ厚さ方向から見て、波状に延在し、
前記バイパス止め部は、前記外周側シール部のうち前記流路幅方向端部に対して凹むように湾曲した凹状シール部に対向している、金属セパレータ。 - 請求項1~6のいずれか1項に記載の金属セパレータであって、
前記バイパス止め部は、前記反応ガス流路の延在方向に沿って間隔を置いて複数配置され、
複数の前記バイパス止め部と前記金属ビード部との間に複数の前記隙間が設けられている、金属セパレータ。 - 請求項7記載の金属セパレータであって、
前記バイパス止め部は、前記反応ガス流路の延在方向に沿って間隔を置いて複数配置され、
互いに隣り合う前記バイパス止め部の間には、前記電解質膜・電極構造体を支持するための中間凸状部が設けられている、金属セパレータ。 - 請求項8記載の金属セパレータであって、
前記金属ビード部と前記バイパス止め部との間の前記隙間は、前記金属ビード部と前記中間凸状部との間の隙間よりも小さい、金属セパレータ。 - 電解質膜の両側に電極が設けられてなる電解質膜・電極構造体と前記電解質膜・電極構造体の両側に配置された一組の金属セパレータとを備えた発電セルが互いに積層されて形成されるとともにセパレータ厚さ方向に圧縮荷重が付与された燃料電池スタックであって、
前記一組の金属セパレータの少なくともいずれかは、請求項1~9のいずれか1項に記載した金属セパレータである、燃料電池スタック。 - 請求項10記載の燃料電池スタックであって、
前記金属セパレータにおける前記流路幅方向端部と前記金属ビード部との間の部位は、当該金属セパレータに隣接する金属セパレータに当接している、燃料電池スタック。
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JP2020112919A JP7083867B2 (ja) | 2020-06-30 | 2020-06-30 | 金属セパレータ及び燃料電池スタック |
CN202110710539.6A CN113871649B (zh) | 2020-06-30 | 2021-06-25 | 金属隔板以及燃料电池堆 |
US17/360,110 US11843138B2 (en) | 2020-06-30 | 2021-06-28 | Metal separator and fuel cell stack |
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WO2023157539A1 (ja) | 2022-02-17 | 2023-08-24 | 株式会社エンビジョンAescジャパン | 電圧検出装置及び電池モジュール |
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