公开(公告)号：US07972749B2

公开(公告)日：2011-07-05

申请号：US10875464

申请日：2004-06-24

申请人： Scott Dewey ,  Clark G. Hochgraf ,  Victor W. Logan ,  John Wheat ,  David B Ouwerkerk

发明人： Scott Dewey ,  Clark G. Hochgraf ,  Victor W. Logan ,  John Wheat ,  David B Ouwerkerk

IPC分类号： H01M4/64 ,  H01M8/24

CPC分类号： H01M8/0488 ,  B60L11/1883 ,  H01M8/241 ,  H01M2250/20 ,  H02M7/483 ,  Y02T90/32 ,  Y02T90/34

摘要： A fuel cell system that includes a fuel cell stack providing high voltage power. A tap is electrically coupled to the positive end of the stack to provide a positive voltage output terminal of the fuel cell stack, and a tap is electrically coupled to the negative end of the stack to provide a negative output terminal of the fuel cell stack. A low voltage tap is electrically coupled to one or more intermediate bipolar plates of the stack to provide low voltage power. Several intermediate taps can be electrically coupled to the bipolar plates, where a center intermediate tap is designated a reference potential tap. A switching network switches the several voltage potentials to provide an AC signal.

摘要翻译： 一种燃料电池系统，其包括提供高电压功率的燃料电池堆。 抽头电耦合到堆叠的正端以提供燃料电池堆的正电压输出端子，并且抽头电耦合到堆叠的负端以提供燃料电池堆的负输出端子。 低压抽头电耦合到堆叠的一个或多个中间双极板以提供低电压功率。 几个中间抽头可以电耦合到双极板，其中中间中间抽头被指定为参考电位抽头。 交换网络切换几个电压电位以提供AC信号。

公开(公告)号：US20050287411A1

公开(公告)日：2005-12-29

申请号：US10875464

申请日：2004-06-24

申请人： Scott Dewey ,  Clark Hochgraf ,  Victor Logan ,  John Wheat ,  David Ouwerkerk

发明人： Scott Dewey ,  Clark Hochgraf ,  Victor Logan ,  John Wheat ,  David Ouwerkerk

IPC分类号： H01M8/04 ,  H01M8/24 ,  H02M7/483

CPC分类号： H01M8/0488 ,  B60L11/1883 ,  H01M8/241 ,  H01M2250/20 ,  H02M7/483 ,  Y02T90/32 ,  Y02T90/34

摘要： A fuel cell system that includes a fuel cell stack providing high voltage power. A tap is electrically coupled to the positive end of the stack to provide a positive voltage output terminal of the fuel cell stack, and a tap is electrically coupled to the negative end of the stack to provide a negative output terminal of the fuel cell stack. A low voltage tap is electrically coupled to one or more intermediate bipolar plates of the stack to provide low voltage power. Several intermediate taps can be electrically coupled to the bipolar plates, where a center intermediate tap is designated a reference potential tap. A switching network switches the several voltage potentials to provide an AC signal.

摘要翻译： 一种燃料电池系统，其包括提供高电压功率的燃料电池堆。 抽头电耦合到堆叠的正端以提供燃料电池堆的正电压输出端子，并且抽头电耦合到堆叠的负端以提供燃料电池堆的负输出端子。 低压抽头电耦合到堆叠的一个或多个中间双极板以提供低电压功率。 几个中间抽头可以电耦合到双极板，其中中间中间抽头被指定为参考电位抽头。 交换网络切换几个电压电位以提供AC信号。

公开(公告)号：US07081193B2

公开(公告)日：2006-07-25

申请号：US10360998

申请日：2003-02-07

申请人： Scott Dewey ,  John Wheat

发明人： Scott Dewey ,  John Wheat

IPC分类号： C25B15/02

CPC分类号： H01M8/04552 ,  B60L3/0069 ,  B60L3/0092 ,  B60L11/1881 ,  H01M8/04664 ,  H01M8/249 ,  Y02T90/34

摘要： A system for detecting an isolation fault in a multi-stack fuel cell system. The system determines the percentage of the voltage from each stack in the multi-stack that contributes to the voltage at a positive terminal and a negative terminal of the stack when a no-fault condition exists. The system then uses those percentages and the actual measured stack voltages to determine if a fault condition exists. The actual voltage measurement at the positive terminal is compared to the calculated voltage contribution from each stack at the positive terminal for the no-fault condition. Also, the actual voltage measurement at the negative terminal is compared to the calculated voltage contribution from each, stack at the negative terminal for the no-fault condition. If there is a significant enough different between the calculated voltage for a no-fault condition and the calculated percentage of the actual voltage measurements, than a fault condition exists.

摘要翻译： 一种用于检测多层燃料电池系统中的隔离故障的系统。 当存在无故障情况时，该系统确定多堆叠中每个堆叠的电压的百分比，这些电压有助于堆叠的正极端子和负极端子处的电压。 然后系统使用这些百分比和实际测量的堆叠电压来确定是否存在故障条件。 将正端子处的实际电压测量与无故障情况下正极端子处的每个堆叠的计算电压贡献进行比较。 此外，将负端子处的实际电压测量与无故障状态下的负端子处的堆叠的计算电压贡献进行比较。 如果无故障情况的计算电压与实际电压测量的计算百分比之间存在足够大的差异，则存在故障条件。

公开(公告)号：US20050231153A1

公开(公告)日：2005-10-20

申请号：US10828420

申请日：2004-04-20

申请人： Scott Dewey ,  John Wheat

发明人： Scott Dewey ,  John Wheat

IPC分类号： H01M8/04 ,  H01M8/10 ,  H01M10/44

CPC分类号： H01M8/04955 ,  H01M8/04029 ,  H01M8/04044 ,  H01M8/04246 ,  H01M8/04664 ,  H01M2008/1095

摘要： A technique for providing high voltage isolation detection in a fuel cell system. The fuel cell system includes a high voltage component and a fuel cell stack. A first conductor is electrically coupled to a positive terminal and the high voltage component, and a second conductor is electrically coupled to a negative terminal and the high voltage component. Current propagating through the first and second conductors is in opposite directions. The first and second conductors extend through an opening in a torroid. The current propagating through the conductors generate magnetic fields that are concentrated by the torroid. A sensor is positioned within the torroid that detects the magnetic fields. If the high voltage component is electrically isolated, then the magnetic fields cancel. If the high voltage component is not isolated, the magnetic fields do not cancel, and the sensor provides a signal indicative of the isolation fault.

摘要翻译： 一种用于在燃料电池系统中提供高电压隔离检测的技术。 燃料电池系统包括高压部件和燃料电池组。 第一导体电耦合到正极端子和高压部件，并且第二导体电耦合到负极端子和高电压部件。 通过第一和第二导体传播的电流处于相反方向。 第一和第二导体延伸通过旋转体中的开口。 通过导体传播的电流产生由环形颗粒集中的磁场。 传感器位于检测磁场的旋转体内。 如果高电压分量电气隔离，则磁场将被取消。 如果高压分量未被隔离，则磁场不会消除，并且传感器提供指示隔离故障的信号。

公开(公告)号：US07820333B2

公开(公告)日：2010-10-26

申请号：US11113574

申请日：2005-04-25

申请人： Ralf Senner ,  Michael Cartwright ,  John Wheat

发明人： Ralf Senner ,  Michael Cartwright ,  John Wheat

IPC分类号： H01M8/24 ,  H01M8/04

CPC分类号： H01M8/249 ,  H01M8/04126 ,  H01M8/241 ,  H01M8/2457 ,  H01M8/2483 ,  H01M8/2484 ,  H01M2008/1095

摘要： A fuel cell system wherein a plurality of fuel cells are arranged in a series of stages, the number of fuel cells decreasing in number in each stage from anode gas inlet to the anode gas outlet. The system allows for parallel flow to all of the cells in a given stage and series flow between the various stages. A similar configuration is present on a cathode side of the system. However, the direction of flow is reversed, providing a greater number of cells in the stage nearest the cathode outlet and a fewer number of cells in the stage near the cathode gas inlet. The invention further provides for the various stages to be configured such that the direction of flow of the anode gas of a given stage is generally opposite the direction of flow of the cathode gas of a given stage.

摘要翻译： 一种燃料电池系统，其中多个燃料电池以一系列的阶段布置，每个阶段的燃料电池的数量从阳极气体入口到阳极气体出口减少。 该系统允许在给定阶段中的所有单元并行流到各个阶段之间的串联流。 类似的配置存在于系统的阴极侧。 然而，流动方向相反，在最靠近阴极出口的阶段中提供更多数量的电池，并且在靠近阴极气体入口的阶段提供更少数量的电池。 本发明还提供了要被配置为使得给定级的阳极气体的流动方向大致与给定级的阴极气体的流动方向相反的各个阶段。

公开(公告)号：US07485382B2

公开(公告)日：2009-02-03

申请号：US10762651

申请日：2004-01-22

申请人： John Wheat ,  Dennis Brown ,  Jason R Kolodziej

发明人： John Wheat ,  Dennis Brown ,  Jason R Kolodziej

IPC分类号： H01M8/04 ,  H01M8/10 ,  H01M8/00

CPC分类号： H01M8/04253 ,  H01M8/04007 ,  H01M8/04089 ,  H01M8/04179 ,  H01M8/04231 ,  H01M8/249

摘要： A fuel cell stack antifreeze system that purges a plurality of fuel cell stacks connected in parallel includes a compressor that supplies pressurized cathode gas to each of the plurality of fuel cell stacks. A controller deactivates a first group of one or more of the plurality of fuel cell stacks and maintains operation of a second group of one or more of the plurality of fuel cell stacks. The second group powers the compressor and the compressor purges excess fluid from the first group using the pressurized cathode gas.

摘要翻译： 并联连接多个燃料电池堆的燃料电池堆防冻系统包括向多个燃料电池堆中的每一个供给加压阴极气体的压缩机。 控制器使多个燃料电池堆中的一个或多个燃料电池堆的第一组停用，并维持多个燃料电池堆中的一个或多个的第二组的运行。 第二组为压缩机供电，压缩机使用加压阴极气体清除第一组中的过量流体。

公开(公告)号：US20060240302A1

公开(公告)日：2006-10-26

申请号：US11113574

申请日：2005-04-25

申请人： Ralf Senner ,  Michael Cartwright ,  John Wheat

发明人： Ralf Senner ,  Michael Cartwright ,  John Wheat

IPC分类号： H01M8/02 ,  H01M8/24

CPC分类号： H01M8/249 ,  H01M8/04126 ,  H01M8/241 ,  H01M8/2457 ,  H01M8/2483 ,  H01M8/2484 ,  H01M2008/1095

摘要： A fuel cell system wherein a plurality of fuel cells are arranged in a series of stages, the number of fuel cells decreasing in number in each stage from anode gas inlet to the anode gas outlet. The system allows for parallel flow to all of the cells in a given stage and series flow between the various stages. A similar configuration is present on a cathode side of the system. However, the direction of flow is reversed, providing a greater number of cells in the stage nearest the cathode outlet and a fewer number of cells in the stage near the cathode gas inlet. The invention further provides for the various stages to be configured such that the direction of flow of the anode gas of a given stage is generally opposite the direction of flow of the cathode gas of a given stage.

摘要翻译： 一种燃料电池系统，其中多个燃料电池以一系列的阶段布置，每个阶段的燃料电池的数量从阳极气体入口到阳极气体出口减少。 该系统允许在给定阶段中的所有单元并行流到各个阶段之间的串联流。 类似的配置存在于系统的阴极侧。 然而，流动方向相反，在最靠近阴极出口的阶段中提供更多数量的电池，并且在靠近阴极气体入口的阶段提供更少数量的电池。 本发明还提供了要被配置为使得给定级的阳极气体的流动方向大致与给定级的阴极气体的流动方向相反的各个阶段。

公开(公告)号：US20050164054A1

公开(公告)日：2005-07-28

申请号：US10762651

申请日：2004-01-22

申请人： John Wheat ,  Dennis Brown ,  Jason Kolodziej

发明人： John Wheat ,  Dennis Brown ,  Jason Kolodziej

IPC分类号： H01M8/04 ,  H01M8/24

CPC分类号： H01M8/04253 ,  H01M8/04007 ,  H01M8/04089 ,  H01M8/04179 ,  H01M8/04231 ,  H01M8/249

摘要： A fuel cell stack antifreeze system that purges a plurality of fuel cell stacks connected in parallel includes a compressor that supplies pressurized cathode gas to each of the plurality of fuel cell stacks. A controller deactivates a first group of one or more of the plurality of fuel cell stacks and maintains operation of a second group of one or more of the plurality of fuel cell stacks. The second group powers the compressor and the compressor purges excess fluid from the first group using the pressurized cathode gas.

摘要翻译： 并联连接多个燃料电池堆的燃料电池堆防冻系统包括向多个燃料电池堆中的每一个供给加压阴极气体的压缩机。 控制器使多个燃料电池堆中的一个或多个燃料电池堆的第一组停用，并维持多个燃料电池堆中的一个或多个的第二组的运行。 第二组为压缩机供电，压缩机使用加压阴极气体清除第一组中的过量流体。

公开(公告)号：US20050164048A1

公开(公告)日：2005-07-28

申请号：US10762656

申请日：2004-01-22

申请人： John Wheat ,  Clark Hochgraf ,  Daryl Chapman

发明人： John Wheat ,  Clark Hochgraf ,  Daryl Chapman

IPC分类号： H01M8/04

CPC分类号： H01M8/04589 ,  H01M8/04089 ,  H01M8/04455 ,  H01M8/0447 ,  H01M8/04559 ,  H01M8/04619 ,  H01M8/04701 ,  H01M8/04753 ,  H01M8/04761 ,  H01M8/04768 ,  H01M8/04798 ,  H01M8/04835 ,  H01M8/0488 ,  H01M8/0491 ,  H01M8/0494

摘要： A fuel cell system includes fuel cell stacks electrically connected in parallel and supplying a gross current to a load. A controller determines the gross load current, and produces a desired current through the load by adjusting, based on the gross load current, at least one parameter affecting at least one of the inputs to and outputs from the system. This system allows a stack design and its voltage output to be kept constant while stacks are added for increased power.

摘要翻译： 燃料电池系统包括并联电连接并将总电流提供给负载的燃料电池堆。 控制器确定总负载电流，并且通过基于总负载电流调整至少一个影响到系统的输入和输出的至少一个参数的参数来产生通过负载的期望电流。 该系统允许堆叠设计及其电压输出保持恒定，同时增加堆叠以增加功率。