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    • 59. 发明授权
    • Fuel cell stack having terminal element located at specified location
    • 具有位于指定位置的端子元件的燃料电池堆
    • US06723463B2
    • 2004-04-20
    • US10022589
    • 2001-12-17
    • Narutoshi SugitaYoshinori WariishiMinoru KoshinumaTakashi KomuraHidemitsu Ono
    • Narutoshi SugitaYoshinori WariishiMinoru KoshinumaTakashi KomuraHidemitsu Ono
    • H01M214
    • H01M8/0247H01M8/0263H01M8/241H01M8/2457H01M8/247H01M8/2483
    • The present invention provides a fuel stack comprising: a plurality of fuel cell units stacked together in a direction of stacking each of which comprises an electrolyte element, a pair of electrodes holding the electrolyte element therebetween, and a pair of separators holding the electrodes therebetween; a pair of terminal plates each of which is disposed outside an end fuel cell unit located at an end of the stacked fuel cell units; and a terminal element extending outwardly in the direction of stacking from the outside surface of at least one of the terminal plates; wherein the location from which the terminal element extends is located within an area on the terminal plate, corresponding to an area in a passage for an oxidizing gas formed in the end fuel cell unit disposed adjacent to the terminal element where the partial pressure of water vapor is lower than the saturated water vapor pressure. More preferably, the terminal element is disposed as close to the centerline of the terminal plate as possible so that the total electrical resistance of the terminal element and the terminal plate is minimized. By this configuration, an increase in the total electrical resistance and water vapor condensation in the fuel cell units located at the ends of the stack may be prevented.
    • 本发明提供了一种燃料堆叠,其特征在于,包括:堆叠方向的多个燃料电池单元,其各自包括电解质元件,一对保持所述电解质元件的电极和一对在其间保持电极的隔板; 一对端子板,其各自设置在位于堆叠的燃料电池单元的端部的端部燃料电池单元的外部; 以及端子元件,其从至少一个端子板的外表面向堆叠方向向外延伸; 其中,所述端子元件延伸的位置位于所述端子板上的区域内,对应于形成在所述端部燃料电池单元中形成的氧化气体的通道中的区域,所述端部燃料电池单元邻近所述端子元件设置,其中所述水汽的分压 低于饱和水蒸气压。 更优选地,端子元件尽可能靠近端子板的中心线设置,使得端子元件和端子板的总电阻最小化。 通过这种结构,可以防止位于堆叠端部的燃料电池单元中的总电阻和水蒸气冷凝的增加。