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    Fuel cell system and start-up method
    2.
    发明授权
    Fuel cell system and start-up method 有权
    燃料电池系统和启动方式

    公开(公告)号：US07807308B2

    公开(公告)日：2010-10-05

    申请号：US11858974

    申请日：2007-09-21

    申请人： Gary M. Robb ,  Balasubramanian Lakshmanan

    发明人： Gary M. Robb ,  Balasubramanian Lakshmanan

    IPC分类号： H01M8/04

    CPC分类号： H01M8/04089 ,  H01M8/04223 ,  H01M8/04302 ,  H01M8/04388 ,  H01M8/04753 ,  H01M8/2483

    摘要： A fuel cell system including a fuel cell stack having a plurality of fuel cells is provided. An anode supply manifold and an anode exhaust manifold are in fluid communication with the anodes of the plurality of fuel cells. A first valve is in fluid communication with the anode supply manifold and a second valve is in fluid communication with the anode exhaust manifold. A pressure sensor is adapted to measure an anode pressure. In operation, the first valve and the second valve are controlled in response to the anode pressure, thereby militating against an undesired exhausting of an anode supply stream.

    摘要翻译： 提供了包括具有多个燃料电池的燃料电池堆的燃料电池系统。 阳极供应歧管和阳极排气歧管与多个燃料电池的阳极流体连通。 第一阀与阳极供应歧管流体连通，第二阀与阳极排气歧管流体连通。 压力传感器适于测量阳极压力。 在操作中，响应于阳极压力来控制第一阀和第二阀，从而阻止阳极供应流的不期望的排气。

    SHUTDOWN OPERATIONS FOR AN UNSEALED CATHODE FUEL CELL SYSTEM
    7.
    发明申请
    SHUTDOWN OPERATIONS FOR AN UNSEALED CATHODE FUEL CELL SYSTEM 审中-公开
    用于无负载CATHODE燃料电池系统的关闭操作

    公开(公告)号：US20090263679A1

    公开(公告)日：2009-10-22

    申请号：US12103939

    申请日：2008-04-16

    申请人： Gary M. Robb ,  Hubert A. Gasteiger ,  Balasubramanian Lakshmanan ,  Paul Taichiang Yu ,  Steven G. Goebel ,  Frederick T. Wagner

    发明人： Gary M. Robb ,  Hubert A. Gasteiger ,  Balasubramanian Lakshmanan ,  Paul Taichiang Yu ,  Steven G. Goebel ,  Frederick T. Wagner

    IPC分类号： H01M8/04

    CPC分类号： H01M8/04231 ,  H01M8/04559 ,  H01M8/04955

    摘要： Processes to shut down a fuel cell system are described. In one implementation (300), a load (215) is cyclically engaged and disengaged across a fuel cell stack (205) so as to deplete the fuel available to the system's fuel cells (205). Voltage and/or current thresholds may be used to determine when to engage and disengage the load (215) and when to terminate the shutdown operation. In another implementation (500), a variable load (405) is engaged and adjusted so as to deplete the fuel available to the system's fuel cells (205). As before, voltage and/or current thresholds may be used to determine when to adjust the load (405) and when to terminate the shutdown process. In still another implementation, a load (215 or 405) may be periodically engaged and disengaged during some portion of the shutdown process and engaged but adjusted during other portions of the shutdown process.

    摘要翻译： 描述关闭燃料电池系统的过程。 在一个实施方案（300）中，负载（215）在燃料电池堆（205）周期性地接合和分离，从而消耗可用于系统燃料电池（205）的燃料。 可以使用电压和/或电流阈值来确定何时接合和解除负载（215）以及何时终止关机操作。 在另一实施方案（500）中，接合和调节可变负载（405）以便耗尽系统燃料电池（205）可用的燃料。 如前所述，可以使用电压和/或电流阈值来确定何时调整负载（405）以及何时终止关机过程。 在另一个实施方案中，在关闭过程的某些部分期间，负载（215或405）可以周期性地接合和分离，并且在关闭过程的其他部分期间被接合但被调整。

    FUEL CELL SYSTEM AND START-UP METHOD
    8.
    发明申请
    FUEL CELL SYSTEM AND START-UP METHOD 有权
    燃料电池系统和启动方法

    公开(公告)号：US20090081496A1

    公开(公告)日：2009-03-26

    申请号：US11858974

    申请日：2007-09-21

    申请人： Gary M. Robb ,  Balasubramanian Lakshmanan

    发明人： Gary M. Robb ,  Balasubramanian Lakshmanan

    IPC分类号： H01M8/04

    CPC分类号： H01M8/04089 ,  H01M8/04223 ,  H01M8/04302 ,  H01M8/04388 ,  H01M8/04753 ,  H01M8/2483

    摘要： A fuel cell system including a fuel cell stack having a plurality of fuel cells is provided. An anode supply manifold and an anode exhaust manifold are in fluid communication with the anodes of the plurality of fuel cells. A first valve is in fluid communication with the anode supply manifold and a second valve is in fluid communication with the anode exhaust manifold. A pressure sensor is adapted to measure an anode pressure. In operation, the first valve and the second valve are controlled in response to the anode pressure, thereby militating against an undesired exhausting of an anode supply stream.

    摘要翻译： 提供了包括具有多个燃料电池的燃料电池堆的燃料电池系统。 阳极供应歧管和阳极排气歧管与多个燃料电池的阳极流体连通。 第一阀与阳极供应歧管流体连通，第二阀与阳极排气歧管流体连通。 压力传感器适于测量阳极压力。 在操作中，响应于阳极压力来控制第一阀和第二阀，从而阻止阳极供应流的不期望的排气。

    Fast MEA break-in and voltage recovery
    9.
    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。