BIPOLAR ASSEMBLY, FUEL CELL STACK, AND METHOD OF FORMING FUEL CELL STACK

PROBLEM TO BE SOLVED: To provide reliable fuel cell stack sealing materials and methods.SOLUTION: In the fuel cell stack sealing materials, metal bipolar plates of a fuel cell 30 include, in surfaces, reactant channels and coolant channels that are fluidly coupled to inlet and outlet flowpaths; one...

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Bibliographic Details
Main Authors LAI YEH-HUNG, ANITA LUONG
Format Patent
LanguageEnglish
Japanese
Published 14.09.2017
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Summary:PROBLEM TO BE SOLVED: To provide reliable fuel cell stack sealing materials and methods.SOLUTION: In the fuel cell stack sealing materials, metal bipolar plates of a fuel cell 30 include, in surfaces, reactant channels and coolant channels that are fluidly coupled to inlet and outlet flowpaths; one or more thin or low aspect-ratio microseals are formed on a bead that is integrally formed on a surface of the bipolar plate and is used to help reduce leakage by maintaining fluid isolation of the reactant and coolant to flow through their respective channels. In the methods, by delaying activation of adhesive bond formed between the microseal and an adjacent surface within the fuel cell 30 until aligned cell assemblies are compressively supported in a housing 5 of a stack 1, the ability of the microseal and its adjacent surface to avoid reactant or coolant leakage is enhanced.SELECTED DRAWING: Figure 1 【課題】確実な燃料電池スタックシーリング材料及び方法の提供。【解決手段】燃料電池30の金属双極板は、表面に反応物チャネル及び冷却剤チャネルを含み、それらは入口流路及び出口流路に流体連結されている。双極板の表面上にはビードが一体的に形成され、該ビード上には1つ又は複数の薄い又は低アスペクト比のマイクロシールが形成されており、反応物及び冷却剤が、各々の前記チャネルを通って流れるように、それらの流体分離を維持することによって漏れの低減を助けるために使用される燃料電池スタックジリング材料。整列された電池組立体がスタック1のハウジング5内に圧縮支持されるまで、燃料電池30内でマイクロシールとその隣接する表面との間に形成された接着結合の活性化を遅らせることによって、反応物又は冷却剤の漏れを回避するためのマイクロシール及びその隣接表面の能力が強化される方法。【選択図】図1
Bibliography:Application Number: JP20170002275