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    Fast MEA break-in and voltage recovery
    11.
    发明授权
    Fast MEA break-in and voltage recovery 有权
    快速MEA突破和电压恢复

    公开(公告)号：US09099703B2

    公开(公告)日：2015-08-04

    申请号：US13432725

    申请日：2012-03-28

    申请人： Pinkhas A. Rapaport ,  Aaron J. Blowers ,  James Leistra ,  Balasubramanian Lakshmanan

    发明人： Pinkhas A. Rapaport ,  Aaron J. Blowers ,  James Leistra ,  Balasubramanian Lakshmanan

    IPC分类号： H01M8/04

    CPC分类号： H01M8/04708 ,  H01M8/04223 ,  H01M8/04365 ,  H01M8/04559 ,  H01M8/04731 ,  H01M8/0488 ,  H01M8/04952 ,  H01M8/241 ,  H01M8/2457 ,  Y02E60/50

    摘要： A system and method for breaking-in and humidifying membrane-electrode-assemblies (MEAs) in a fuel cell stack. The method includes performing voltage cycling and humidification of the MEAs in the stack, including one or more temperature steps wherein current density of the stack is cycled within a predetermined range for each of the one or more temperature steps. The method also includes maintaining a fuel cell stack voltage within a predetermined range, and maintaining anode and cathode reactant flows at an approximate set-point during the current density cycling of the one or more temperature steps to break-in and humidify the MEAs in the stack so that the stack is able to operate at a predetermined threshold for a fuel cell stack voltage output capability.

    摘要翻译： 一种用于在燃料电池堆中分解和加湿膜 - 电极组件（MEA）的系统和方法。 该方法包括对堆叠中的MEA进行电压循环和加湿，包括一个或多个温度步骤，其中堆叠的电流密度在一个或多个温度步骤中的每一个的预定范围内循环。 该方法还包括将燃料电池堆电压维持在预定范围内，并且在一个或多个温度步骤的电流密度循环期间将阳极和阴极反应物流维持在近似设定点，从而在 堆叠，使得堆叠能够在燃料电池堆电压输出能力的预定阈值下操作。

    SHUTDOWN STRATEGY FOR ENHANCED WATER MANAGEMENT
    13.
    发明申请
    SHUTDOWN STRATEGY FOR ENHANCED WATER MANAGEMENT 有权
    关于加强水管理的关键战略

    公开(公告)号：US20100190078A1

    公开(公告)日：2010-07-29

    申请号：US12359736

    申请日：2009-01-26

    申请人： Pinkhas A. Rapaport ,  Steven R. Falta ,  Derek R. Lebzelter ,  Eric J. Connor

    发明人： Pinkhas A. Rapaport ,  Steven R. Falta ,  Derek R. Lebzelter ,  Eric J. Connor

    IPC分类号： H01M8/04

    CPC分类号： H01M8/04179 ,  H01M8/04126 ,  H01M8/04223 ,  H01M8/04225 ,  H01M8/04228 ,  H01M2008/1095

    摘要： A system and method for providing a fuel cell stack purge to remove excess water during system shut-down. A compressor is operated at a shut-down speed to force water out of the cathode flow channels and draw water through the membrane from the anode flow channels so that a desired amount of water is removed from the fuel cell stack without over drying the membrane. The cathode shut-down purge flow can be introduced in the forward or reverse direction. Further, the flow of hydrogen fuel can be directed so that it flows through the anode flow channels in an opposite direction to push water out of an anode outlet manifold into the anode flow channels so that it will also be drawn through the membrane by the cathode airflow. Finally, a brief rehydration step is added after the shut-down purge to achieve the desired water content in the cells.

    摘要翻译： 一种用于在系统关闭期间提供燃料电池堆吹扫以去除多余水的系统和方法。 压缩机以关闭速度运行以迫使水从阴极流动通道中流出并从阳极流动通道吸入水通过膜，使得从燃料电池堆中除去所需量的水而不过度干燥膜。 阴极关闭清洗流可以沿正向或反向引入。 此外，可以引导氢燃料的流动，使得其沿相反方向流过阳极流动通道，以将水从阳极出口歧管推出到阳极流动通道中，使得其也将被阴极拉伸通过膜 气流。 最后，在关闭吹扫之后添加简单的补液步骤，以达到细胞中所需的水含量。

    Shutdown strategy for enhanced water management
    15.
    发明授权
    Shutdown strategy for enhanced water management 有权
    加强水管理的停机策略

    公开(公告)号：US08192885B2

    公开(公告)日：2012-06-05

    申请号：US12359736

    申请日：2009-01-26

    申请人： Pinkhas A. Rapaport ,  Steven R. Falta ,  Derek R. Lebzelter ,  Eric J. Connor

    发明人： Pinkhas A. Rapaport ,  Steven R. Falta ,  Derek R. Lebzelter ,  Eric J. Connor

    IPC分类号： H01M8/04

    CPC分类号： H01M8/04179 ,  H01M8/04126 ,  H01M8/04223 ,  H01M8/04225 ,  H01M8/04228 ,  H01M2008/1095

    摘要： A system and method for providing a fuel cell stack purge to remove excess water during system shut-down. A compressor is operated at a shut-down speed to force water out of the cathode flow channels and draw water through the membrane from the anode flow channels so that a desired amount of water is removed from the fuel cell stack without over drying the membrane. The cathode shut-down purge flow can be introduced in the forward or reverse direction. Further, the flow of hydrogen fuel can be directed so that it flows through the anode flow channels in an opposite direction to push water out of an anode outlet manifold into the anode flow channels so that it will also be drawn through the membrane by the cathode airflow. Finally, a brief rehydration step is added after the shut-down purge to achieve the desired water content in the cells.

    摘要翻译： 一种用于在系统关闭期间提供燃料电池堆吹扫以去除多余水的系统和方法。 压缩机以关闭速度运行以迫使水从阴极流动通道中流出并从阳极流动通道吸入水通过膜，使得从燃料电池堆中除去所需量的水而不过度干燥膜。 阴极关闭清洗流可以沿正向或反向引入。 此外，可以引导氢燃料的流动，使得其沿相反方向流过阳极流动通道，以将水从阳极出口歧管推出到阳极流动通道中，使得其也将被阴极拉伸通过膜 气流。 最后，在关闭吹扫之后添加简单的补液步骤，以达到细胞中所需的水含量。