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    • 5. 发明申请
    • Electrochemical fuel cell stack with improved reactant manifolding and sealing
    • 具有改进的反应物歧管和密封的电化学燃料电池堆
    • US20050042497A1
    • 2005-02-24
    • US10868393
    • 2004-06-15
    • Joel RonneBoguslaw WozniczkaClarence ChowHenry Voss
    • Joel RonneBoguslaw WozniczkaClarence ChowHenry Voss
    • H01M8/02H01M8/24H01M8/04
    • H01M8/0271H01M8/0258H01M8/241H01M8/247H01M8/2483H01M2300/0082
    • An electrochemical fuel cell stack with improved reactant manifolding and sealing includes a pair of separator plates interposed between adjacent membrane electrode assemblies. Passageways fluidly interconnecting the anodes to a fuel manifold and interconnecting the cathodes to an oxidant manifold are formed between adjoining non-active surfaces of the pairs of separator plates. The passageways extend through one or more ports penetrating the thickness of one of the plates thereby fluidly connecting the manifold to the opposite active surface of that plate, and the contacted electrode. The non-active surfaces of adjoining separator plates in a fuel cell stack cooperate to provide passageways for directing both reactants from respective stack fuel and oxidant supply manifolds to the appropriate electrodes. The fuel and oxidant reactant streams passageways are fluidly isolated from each other, although they both traverse adjoining non-active surfaces of the same pair of plates. The present manifolding configuration simplifies the sealing mechanisms associated with the stack manifolds because reactant streams are not directed between the separator plates and resilient MEA seals. Coolant passages may also be conveniently provided between adjoining non-active surfaces of the pairs of separator plates.
    • 具有改进的反应物歧管和密封的电化学燃料电池堆包括插入在相邻膜电极组件之间的一对隔板。 将阳极流体地互连到燃料歧管并将阴极互连到氧化剂歧管的通道形成在隔板对的非活性表面之间。 通道延伸穿过穿过其中一个板的厚度的一个或多个端口,从而将歧管流体连接到该板的相对的有效表面和接触的电极。 在燃料电池堆中相邻的隔板的非活性表面配合以提供通道,用于将来自相应堆叠燃料和氧化剂供应歧管的两种反应物引导到合适的电极。 燃料和氧化剂反应物流通道彼此流体隔离,尽管它们都穿过同一对板的相邻非活性表面。 目前的歧管结构简化了与堆叠歧管相关联的密封机构,因为反应物流不被引导在隔板和弹性MEA密封之间。 冷却剂通道也可以方便地设置在隔板对的相邻的非活性表面之间。
    • 6. 发明授权
    • Electrochemical fuel cell stack with compression bands
    • 具有压缩带的电化学燃料电池堆
    • US5993987A
    • 1999-11-30
    • US96769
    • 1998-06-12
    • Boguslaw WozniczkaNicholas J. FletcherPeter R. Gibb
    • Boguslaw WozniczkaNicholas J. FletcherPeter R. Gibb
    • H01M8/10H01M8/24
    • H01M8/247H01M2300/0082
    • An electrochemical fuel cell stack includes a plurality of fuel cell assemblies interposed between a pair of end plate assemblies. The mechanism for securing the stack in its compressed, assembled state includes at least one compression band which circumscribes the end plate assemblies and interposed fuel cell assemblies of the stack. At least one of the end plate assemblies is sufficiently thin so as to deflect under the compressive force if the at least one end plate assembly is supported only at a peripheral edge portion thereof. Preferably, at least one of the end plate assemblies comprises a resilient member which cooperates with each compression band to urge the first end plate assembly toward the second end plate assembly, thereby applying compressive force to the fuel cell assemblies to promote sealing and electrical contact between the layers forming the fuel cell stack.
    • 电化学燃料电池堆包括插入在一对端板组件之间的多个燃料电池组件。 用于将堆叠固定在其压缩的组装状态的机构包括至少一个压缩带,该压缩带围绕端板组件和中间堆叠的燃料电池组件。 至少一个端板组件足够薄,以便如果至少一个端板组件仅在其周边边缘部分处被支撑,则在压缩力下偏转。 优选地,端板组件中的至少一个包括与每个压缩带配合以将第一端板组件推向第二端板组件的弹性构件,从而向燃料电池组件施加压力,以促进燃料电池组件之间的密封和电接触 形成燃料电池堆的层。