Apparatus for improving the cold starting capability of an electrochemical fuel cell
    1.
    发明申请
    Apparatus for improving the cold starting capability of an electrochemical fuel cell 有权
    用于提高电化学燃料电池的冷启动能力的装置

    公开(公告)号:US20050112418A1

    公开(公告)日:2005-05-26

    申请号:US10833228

    申请日:2004-04-26

    IPC分类号: H01M8/04 H01M8/00

    摘要: An electric power generation system has elements that improve the cold start capability and freeze tolerance of a constituent fuel cell stack cooperate to reduce the amount of water remaining within the passages of the stack. The system includes a purge system that is connectable to the oxidant supply, fuel supply and/or coolant passages upstream of the stack. When the stack is shut down, the stack is disconnected from an external circuit, and purge fluid is transmitted by the purge system through the stack before the stack falls below the freezing point of water. In systems where fuel and/or oxidant streams are humidified prior to entry into the stack, a humidifier bypass system may be provided in place of the purge system. The humidifier bypass system transmits reactant fluid to the stack in fluid isolation from the humidifier, so that the inlet reactant streams are unhumidified.

    摘要翻译: 发电系统具有提高组分燃料电池堆的冷启动能力和冷冻公差的元件,其协作以减少堆叠通道内剩余的水量。 该系统包括可连接到堆叠上游的氧化剂供应源,燃料供应源和/或冷却剂通道的净化系统。 当堆叠关闭时,堆叠与外部电路断开连接,并且在堆叠降低到水的冰点之前,净化系统通过堆叠传输净化流体。 在燃料和/或氧化剂流在进入堆叠之前被加湿的系统中,可以提供加湿器旁路系统来代替净化系统。 加湿器旁路系统将反应物流体与加湿器以流体隔离的方式将反应物流体传送到堆叠中,使得入口反应物流不加湿。

    Method for operating fuel cells with passive reactant supply
    5.
    发明授权
    Method for operating fuel cells with passive reactant supply 有权
    操作具有被动反应物供应的燃料电池的方法

    公开(公告)号:US08597806B2

    公开(公告)日:2013-12-03

    申请号:US11627333

    申请日:2007-01-25

    IPC分类号: H01M8/00

    摘要: A method for operating a passive, air-breathing fuel cell system is described. In one embodiment, the system comprises one or more fuel cells, and a closed fuel plenum connected to a fuel supply. In some embodiments of the method, the fuel cell cathodes are exposed to ambient air, and the fuel is supplied to the anodes via the fuel plenum at a pressure greater than that of the ambient air.

    摘要翻译: 描述了一种用于操作被动式呼吸空气燃料电池系统的方法。 在一个实施例中,系统包括一个或多个燃料电池和连接到燃料供应的封闭的燃料增压室。 在该方法的一些实施例中,燃料电池阴极暴露于环境空气中,并且燃料通过燃料压力室以比环境空气大的压力被供应到阳极。