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公开(公告)号：US20080299418A1
公开(公告)日：2008-12-04
申请号：US11757843
申请日：2007-06-04
IPC分类号： H01M8/00
CPC分类号： H01M8/04201 , H01M8/023
摘要： A fuel cell stack that includes a gas diffusion media for the end cells in the stack that has less of an intrusion into the flow field channels of the end cells that the other cells, so as to increase the flow rate through the flow channels in the end cells relative to the flow rate through the flow channels in the other cells. A different diffusion media can be used in the end cells than the nominal cells, where the end cell diffusion media has less of a channel intrusion as a result of diffusion media characteristics. Also, the same diffusion media could be used in the end cells as the nominal cells, but the end cell diffusion media layers could be thinner than the nominal cell diffusion media layers. Further, a higher amount of pre-compression can be used for the diffusion media in the end cells.
摘要翻译： 一种燃料电池堆，其包括用于堆叠中的末端电池的气体扩散介质，其具有较少侵入到其他电池的端电池的流场通道，以便增加通过其中的流动通道的流速 相对于通过其他电池中的流动通道的流速来说，终端电池。 在末端电池中可以使用不同的扩散介质，而不是标称电池，其中末端电池扩散介质由于扩散介质特性而具有较少的通道入侵。 此外，相同的扩散介质可以在末端电池中用作标称电池，但是终端电池扩散介质层可以比标称电池扩散介质层更薄。 此外，更高量的预压缩可以用于端电池中的扩散介质。
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公开(公告)号：US20080038594A1
公开(公告)日：2008-02-14
申请号：US11464226
申请日：2006-08-14
CPC分类号： H01M8/04126 , H01M8/04313 , H01M8/04529 , H01M8/0485 , H01M8/04992 , H01M8/248 , H01M2008/1095
摘要： An electrochemical conversion assembly (10) is provided comprising a plurality of electrochemical conversion cells arranged in a conductively coupled fuel cell stack (20), a condition sensor (30, 40) operatively coupled to the fuel cell stack (20), and a programmable controller operatively coupled to the condition sensor and the fuel cell stack. The condition sensor is configured to measure a rate of change of hydration in the proton exchange membrane and either the condition sensor or the programmable controller is configured to generate a signal indicative of the measured rate of change of hydration. The programmable controller is configured to facilitate control of at least one operating parameter of the electrochemical conversion assembly by monitoring the signal indicative of the measured rate of change of hydration. The condition sensor can be configured to detect a dimensional change or a change in compression of the conductively coupled fuel cell stack as the membrane hydration changes. Additional embodiments are disclosed.
摘要翻译： 提供了电化学转化组件（10），其包括布置在导电耦合的燃料电池堆（20）中的多个电化学转换单元，可操作地耦合到燃料电池堆（20）的状态传感器（30,40）和可编程 控制器可操作地耦合到状态传感器和燃料电池堆。 条件传感器被配置为测量质子交换膜中的水合变化率，条件传感器或可编程控制器被配置为产生指示测量的水合变化率的信号。 可编程控制器被配置为通过监测指示测量的水合变化率的信号来促进对电化学转化组件的至少一个操作参数的控制。 条件传感器可以被配置为当膜水合变化时检测导电耦合燃料电池堆的尺寸变化或压缩变化。 公开了另外的实施例。
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3.发明授权公开(公告)号：US07947400B2
公开(公告)日：2011-05-24
申请号：US11464226
申请日：2006-08-14
申请人： Yeh-Hung Lai , Pinkhas A. Rapaport , John C. Fagey
发明人： Yeh-Hung Lai , Pinkhas A. Rapaport , John C. Fagey
CPC分类号： H01M8/04126 , H01M8/04313 , H01M8/04529 , H01M8/0485 , H01M8/04992 , H01M8/248 , H01M2008/1095
摘要： An electrochemical conversion assembly (10) is provided comprising a plurality of electrochemical conversion cells arranged in a conductively coupled fuel cell stack (20), a condition sensor (30, 40) operatively coupled to the fuel cell stack (20), and a programmable controller operatively coupled to the condition sensor and the fuel cell stack. The condition sensor is configured to measure a rate of change of hydration in the proton exchange membrane and either the condition sensor or the programmable controller is configured to generate a signal indicative of the measured rate of change of hydration. The programmable controller is configured to facilitate control of at least one operating parameter of the electrochemical conversion assembly by monitoring the signal indicative of the measured rate of change of hydration. The condition sensor can be configured to detect a dimensional change or a change in compression of the conductively coupled fuel cell stack as the membrane hydration changes. Additional embodiments are disclosed.
摘要翻译： 提供了电化学转化组件（10），其包括布置在导电耦合的燃料电池堆（20）中的多个电化学转换单元，可操作地耦合到燃料电池堆（20）的状态传感器（30,40）和可编程 控制器可操作地耦合到状态传感器和燃料电池堆。 条件传感器被配置为测量质子交换膜中的水合变化率，条件传感器或可编程控制器被配置为产生指示测量的水合变化率的信号。 可编程控制器被配置为通过监测指示测量的水合变化率的信号来促进对电化学转化组件的至少一个操作参数的控制。 条件传感器可以被配置为当膜水合变化时检测导电耦合燃料电池堆的尺寸变化或压缩变化。 公开了另外的实施例。
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公开(公告)号：US08524408B2
公开(公告)日：2013-09-03
申请号：US12567438
申请日：2009-09-25
申请人： Yeh-Hung Lai , Pinkhas A. Rapaport , Amit Nayar
发明人： Yeh-Hung Lai , Pinkhas A. Rapaport , Amit Nayar
CPC分类号： H01M8/04552 , H01M8/04582 , H01M8/04641 , H01M8/0494 , H01M2008/1095
摘要： A method for preventing a fuel cell voltage potential reversal including determining a relationship between the cell resistance and the current of a fuel cell stack at which a fuel cell voltage potential reversal will occur, operating the fuel cell stack according to a power demand requested, and determining the maximum cell resistance of the fuel cells in the stack. If the maximum cell resistance exceeds a threshold value for the current at which the fuel cell stack is being operated, the operation of the fuel cell stack is restricted to prevent the fuel cell voltage potential from reversing.
摘要翻译： 一种用于防止燃料电池电压电位反转的方法，包括确定电池电阻与将发生燃料电池电压电位反转的燃料电池组的电流之间的关系，根据所要求的功率需求来操作燃料电池堆;以及 确定堆叠中的燃料电池的最大电池电阻。 如果最大电池电阻超过用于操作燃料电池堆的电流的阈值，则限制燃料电池堆的操作以防止燃料电池电压电势反转。
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公开(公告)号：US20110076581A1
公开(公告)日：2011-03-31
申请号：US12567438
申请日：2009-09-25
申请人： Yeh-Hung Lai , Pinkhas A. Rapaport , Amit Nayar
发明人： Yeh-Hung Lai , Pinkhas A. Rapaport , Amit Nayar
IPC分类号： H01M8/04
CPC分类号： H01M8/04552 , H01M8/04582 , H01M8/04641 , H01M8/0494 , H01M2008/1095
摘要： A method for preventing a fuel cell voltage potential reversal including determining a relationship between the cell resistance and the current of a fuel cell stack at which a fuel cell voltage potential reversal will occur, operating the fuel cell stack according to a power demand requested, and determining the maximum cell resistance of the fuel cells in the stack. If the maximum cell resistance exceeds a threshold value for the current at which the fuel cell stack is being operated, the operation of the fuel cell stack is restricted to prevent the fuel cell voltage potential from reversing.
摘要翻译： 一种用于防止燃料电池电压电位反转的方法，包括确定电池电阻与将发生燃料电池电压电位反转的燃料电池组的电流之间的关系，根据所要求的功率需求来操作燃料电池堆;以及 确定堆叠中的燃料电池的最大电池电阻。 如果最大电池电阻超过用于操作燃料电池堆的电流的阈值，则限制燃料电池堆的操作以防止燃料电池电压电势反转。
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公开(公告)号：US20130260266A1
公开(公告)日：2013-10-03
申请号：US13432725
申请日：2012-03-28
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。
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公开(公告)号：US20070298289A1
公开(公告)日：2007-12-27
申请号：US11475695
申请日：2006-06-27
申请人： Bruce J. Clingerman , Jason R. Kolodziej , Derek S. Kilmer , Pinkhas A. Rapaport , David S. Mathews , Shyam Kocha , Abdullah B. Alp , Matthew K. Hortop , William H. Pettit
发明人： Bruce J. Clingerman , Jason R. Kolodziej , Derek S. Kilmer , Pinkhas A. Rapaport , David S. Mathews , Shyam Kocha , Abdullah B. Alp , Matthew K. Hortop , William H. Pettit
IPC分类号： H01M8/04
CPC分类号： H01M8/04955 , B60L11/1894 , B60L2240/622 , B60L2240/662 , B60L2240/80 , H01M8/0258 , H01M8/04223 , H01M8/04228 , H01M8/04231 , H01M8/04253 , H01M8/0432 , H01M8/04358 , H01M8/04365 , H01M8/04731 , H01M8/241 , Y02T10/7291 , Y02T90/16 , Y02T90/162 , Y02T90/34
摘要： A fuel cell system that employs a method for determining the potential that a freeze condition will exist after the system is shut-down based on predetermined input, such as ambient temperature, geographical location, user usage profile, date, weather reports, etc. If the system determines that a freeze condition is probable, then the system initiates a purge shut-down of the fuel cell system where water is purged out of the reactant gas flow channels. If the system determines that a freeze condition is unlikely, then it will initiate a normal shut-down procedure without purging the flow channels. The system will then periodically determine if the conditions have changed, and will initiate the purge if a freeze condition subsequently becomes probable.
摘要翻译： 一种燃料电池系统，其采用基于诸如环境温度，地理位置，用户使用情况，日期，天气报告等预定输入关闭系统之后将存在冻结状态的潜力的方法。如果 系统确定冷冻条件是可能的，则系统启动燃料电池系统的清除关闭，其中将水从反应物气体流动通道中排出。 如果系统确定冻结条件不太可能，那么它将启动一个正常的停机程序，而不需要清除流量通道。 然后，系统将定期确定条件是否已更改，并且如果冻结条件随后变为可能，将启动清除。
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公开(公告)号：US08574776B2
公开(公告)日：2013-11-05
申请号：US11475695
申请日：2006-06-27
申请人： Bruce J. Clingerman , Jason R. Kolodziej , Derek S. Kilmer , Pinkhas A. Rapaport , David S. Mathews , Shyam Kocha , Abdullah B. Alp , Matthew K. Hortop , William H. Pettit
发明人： Bruce J. Clingerman , Jason R. Kolodziej , Derek S. Kilmer , Pinkhas A. Rapaport , David S. Mathews , Shyam Kocha , Abdullah B. Alp , Matthew K. Hortop , William H. Pettit
IPC分类号： H01M8/10
CPC分类号： H01M8/04955 , B60L11/1894 , B60L2240/622 , B60L2240/662 , B60L2240/80 , H01M8/0258 , H01M8/04223 , H01M8/04228 , H01M8/04231 , H01M8/04253 , H01M8/0432 , H01M8/04358 , H01M8/04365 , H01M8/04731 , H01M8/241 , Y02T10/7291 , Y02T90/16 , Y02T90/162 , Y02T90/34
摘要： A fuel cell system that employs a method for determining the potential that a freeze condition will exist after the system is shut-down based on predetermined input, such as ambient temperature, geographical location, user usage profile, date, weather reports, etc. If the system determines that a freeze condition is probable, then the system initiates a purge shut-down of the fuel cell system where water is purged out of the reactant gas flow channels. If the system determines that a freeze condition is unlikely, then it will initiate a normal shut-down procedure without purging the flow channels. The system will then periodically determine if the conditions have changed, and will initiate the purge if a freeze condition subsequently becomes probable.
摘要翻译： 一种燃料电池系统，其采用基于诸如环境温度，地理位置，用户使用情况，日期，天气报告等预定输入关闭系统之后将存在冻结状态的潜力的方法。如果 系统确定冷冻条件是可能的，则系统启动燃料电池系统的清除关闭，其中将水从反应物气体流动通道中排出。 如果系统确定冻结条件不太可能，那么它将启动一个正常的停机程序，而不需要清除流量通道。 然后，系统将定期确定条件是否已更改，并且如果冻结条件随后变为可能，将启动清除。
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9.发明申请Bipolar Plate Hydrophilic Treatment for Stable Fuel Cell Stack Operation at Low Power 有权双极板亲水处理稳定的燃料电池堆栈操作在低功率公开(公告)号：US20090117443A1
公开(公告)日：2009-05-07
申请号：US11936651
申请日：2007-11-07
申请人： Thomas A. Trabold , Steven R. Falta , Pinkhas A. Rapaport , Reena L. Datta , Gayatri Vyas Dadheech
发明人： Thomas A. Trabold , Steven R. Falta , Pinkhas A. Rapaport , Reena L. Datta , Gayatri Vyas Dadheech
CPC分类号： H01M8/0228 , H01M8/0206 , H01M8/0258 , H01M8/0267 , H01M8/0276 , H01M8/04119 , H01M2008/1095
摘要： A flow field plate or bipolar plate for a fuel cell that includes a hydrophilic coating formed on flow field channels extending through a tunnel region between a cell active area and the inlet and outlet manifolds. The flow field plates are an assembly of a cathode side unipolar plate and an anode side unipolar plate. The hydrophilic coating is deposited on the unipolar plates prior to the unipolar plates being assembled into the flow field plate so that line of site deposition processes can be used to coat the flow field channels in the tunnel region. The unipolar plates can be any suitable fuel cell unipolar plates, such as stamped unipolar plates or composite unipolar plates.
摘要翻译： 一种用于燃料电池的流场板或双极板，其包括在流场通道上形成的亲水涂层，其延伸穿过电池活动区域和入口歧管和出口歧管之间的隧道区域。 流场板是阴极侧单极板和阳极侧单极板的组件。 在将单极板组装到流场板中之前，将亲水涂层沉积在单极板上，使得可以使用现场沉积工艺线涂覆隧道区域中的流场通道。 单极板可以是任何合适的燃料电池单极板，例如冲压的单极板或复合单极板。
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公开(公告)号：US06794068B2
公开(公告)日：2004-09-21
申请号：US10230916
申请日：2002-08-29
申请人： Pinkhas A. Rapaport , Jeffrey A. Rock , Andrew D. Bosco , John P. Salvador , Hubert A. Gasteiger , Lesley A. Paine
发明人： Pinkhas A. Rapaport , Jeffrey A. Rock , Andrew D. Bosco , John P. Salvador , Hubert A. Gasteiger , Lesley A. Paine
IPC分类号： H01M804
CPC分类号： H01M8/0263 , H01M8/0258 , H01M8/0265 , H01M8/0267 , H01M8/04089 , H01M8/04156 , H01M8/2405 , H01M8/2465 , H01M8/249
摘要： A fuel cell stack has at least two segments of fuel cells each having reactant gas passages. Each of the cells in each segment is arranged such that the reactant gas passages of each cell are in parallel with each other cell. Flow of fuel cell fluids, normally in a gaseous state on the anode and cathode side of each cell, is in a gravity assisted downward direction. Gravity assisted flow directs water formed in each cell to lower removal points of the stack segments. Each pair of segments is separated by a separator segment having a separator channel, the separator segment forming an integral unit of the stack. Each separator channel redirects the entire flow of each fluid within the stack from the bottom of an upstream segment to the top of a next or downstream segment, without reacting the fluid, controlling relative humidity between stack segments.
摘要翻译： 燃料电池堆具有至少两个具有反应气体通道的燃料电池段。 每个区段中的每个单元布置成使得每个单元的反应气体通道与彼此平行的单元格。 在每个电池的阳极和阴极侧通常处于气态的燃料电池流体的流动处于重力辅助的向下的方向。 重力辅助流引导在每个电池中形成的水以降低堆垛段的去除点。 每对分段由具有分离器通道的分离器段分开，分离器段形成堆叠的整体单元。 每个分离器通道将堆叠内的每个流体的整个流动从上游段的底部重新定向到下一段或下游段的顶部，而不使流体反应，从而控制堆段之间的相对湿度。
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