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    SHUTDOWN OPERATIONS FOR AN UNSEALED CATHODE FUEL CELL SYSTEM
    1.
    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
    6.
    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。

    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。

    Fuel cell stack used as coolant heater
    9.
    发明授权
    Fuel cell stack used as coolant heater 有权
    用作冷却液加热器的燃料电池组

    公开(公告)号：US09034530B2

    公开(公告)日：2015-05-19

    申请号：US12187056

    申请日：2008-08-06

    申请人： Derek R Lebzelter ,  Balasubramanian Lakshmanan ,  Frederick T. Wagner

    发明人： Derek R Lebzelter ,  Balasubramanian Lakshmanan ,  Frederick T. Wagner

    IPC分类号： H01M8/04

    CPC分类号： H01M8/04089 ,  H01M8/04268 ,  H01M8/04365 ,  H01M8/04552 ,  H01M8/04731 ,  Y02E60/50

    摘要： A system and method for increasing the temperature of a fuel cell stack quickly, especially at cold stack start-up. The method includes determining whether the fuel cell stack is below a first predetermined temperature threshold, and, if so, starting a cooling fluid flow through the stack and engaging a shorting circuit across the stack to short circuit the stack and cause the stack to operate inefficiently. The method then determines a desired heating rate of the fuel cell stack and calculates a cathode airflow to the fuel cell stack based on the desired heating rate. The method reduces the flow of cathode air to the stack if a minimum cell voltage is below a predetermined minimum cell voltage threshold and disengages the shorting circuit and applies vehicle loads to the stack when the stack temperature reaches a predetermined second temperature threshold.

    摘要翻译： 一种用于快速提高燃料电池堆的温度的系统和方法，特别是在冷堆启动时。 该方法包括确定燃料电池堆是否低于第一预定温度阈值，并且如果是，则启动冷却流体流过堆叠并且跨越堆叠接合短路电路以使堆叠短路并且使得堆栈无效地运行 。 该方法然后确定燃料电池堆的期望加热速率，并基于期望的加热速率计算到燃料电池堆的阴极气流。 如果最小电池电压低于预定的最小电池电压阈值，则该方法减少阴极空气流到堆叠的流量，并且当堆叠温度达到预定的第二温度阈值时，将短路电路解除并向车辆载荷施加车辆负载。

    FUEL CELL STACK USED AS COOLANT HEATER
    10.
    发明申请
    FUEL CELL STACK USED AS COOLANT HEATER 有权
    燃料电池堆叠用作冷却加热器

    公开(公告)号：US20100035097A1

    公开(公告)日：2010-02-11

    申请号：US12187056

    申请日：2008-08-06

    申请人： Derek R. Lebzelter ,  Balasubramanian Lakshmanan ,  Frederick T. Wagner

    发明人： Derek R. Lebzelter ,  Balasubramanian Lakshmanan ,  Frederick T. Wagner

    IPC分类号： H01M8/00

    CPC分类号： H01M8/04089 ,  H01M8/04268 ,  H01M8/04365 ,  H01M8/04552 ,  H01M8/04731 ,  Y02E60/50

    摘要： A system and method for increasing the temperature of a fuel cell stack quickly, especially at cold stack start-up. The method includes determining whether the fuel cell stack is below a first predetermined temperature threshold, and, if so, starting a cooling fluid flow through the stack and engaging a shorting circuit across the stack to short circuit the stack and cause the stack to operate inefficiently. The method then determines a desired heating rate of the fuel cell stack and calculates a cathode airflow to the fuel cell stack based on the desired heating rate. The method reduces the flow of cathode air to the stack if a minimum cell voltage is below a predetermined minimum cell voltage threshold and disengages the shorting circuit and applies vehicle loads to the stack when the stack temperature reaches a predetermined second temperature threshold.

    摘要翻译： 一种用于快速提高燃料电池堆的温度的系统和方法，特别是在冷堆启动时。 该方法包括确定燃料电池堆是否低于第一预定温度阈值，并且如果是，则启动冷却流体流过堆叠并且跨越堆叠接合短路电路以使堆叠短路并且使得堆栈无效地运行 。 该方法然后确定燃料电池堆的期望加热速率，并基于期望的加热速率计算到燃料电池堆的阴极气流。 如果最小电池电压低于预定的最小电池电压阈值，则该方法减少阴极空气流到堆叠的流量，并且当堆叠温度达到预定的第二温度阈值时，将短路电路解除并将车辆负载施加到堆叠。