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公开(公告)号：US09099703B2
公开(公告)日：2015-08-04
申请号：US13432725
申请日：2012-03-28
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。
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公开(公告)号：US08574790B2
公开(公告)日：2013-11-05
申请号：US12896981
申请日：2010-10-04
CPC分类号： H01M4/8642 , H01M8/04291 , H01M8/1004 , H01M2008/1095 , Y02P70/56
摘要： A graded electrode is described. The graded electrode includes a substrate; and at least two electrode layers on the substrate forming a combined electrode layer, a composition of the at least two electrode layers being different, the combined electrode layer having an average level of the property that changes across the substrate. Fuel cells using graded electrodes and methods of making graded electrodes are also described.
摘要翻译： 描述了分级电极。 分级电极包括基板; 以及在所述基板上形成组合电极层的至少两个电极层，所述至少两个电极层的组成不同，所述组合电极层具有在所述基板上变化的性质的平均水平。 还描述了使用分级电极的燃料电池和制造梯度电极的方法。
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3.发明申请ALGORITHM FOR IN-SITU QUANTIFICATION OF PEMFC MEMBRANE HEALTH OVER ITS LIFE 有权用于现场量化PEMFC膜健康的算法在其生命中的算法公开(公告)号：US20120274332A1
公开(公告)日：2012-11-01
申请号：US13094263
申请日：2011-04-26
IPC分类号： G01N27/416
CPC分类号： H01M8/04992 , H01M8/04197 , H01M8/04228 , H01M8/043 , H01M8/04447 , H01M8/04455 , H01M8/04559 , H01M8/04589 , H01M8/04679 , H01M8/04753 , Y02E60/50
摘要： A method for determining the health of the membranes in a fuel cell stack. The total parasitic current of the fuel cells in the stack is determined. From the total parasitic current, the shorting resistance and the cross-over parasitic current are determined. The health of the membranes is then determined from the cross-over parasitic current and the shorting resistance.
摘要翻译： 一种用于确定燃料电池堆中的膜的健康的方法。 确定堆叠中的燃料电池的总的寄生电流。 从总寄生电流确定短路电阻和交叉寄生电流。 然后从交叉寄生电流和短路电阻确定膜的健康。
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公开(公告)号：US20110091780A1
公开(公告)日：2011-04-21
申请号：US12580863
申请日：2009-10-16
申请人： Daniel T. Folmsbee , Balasubramanian Lakshmanan , John P. Salvador , Joe C. Machuca , Bernd Krause , David R. Savage , David A. Arthur , Derek R. Lebzelter
发明人： Daniel T. Folmsbee , Balasubramanian Lakshmanan , John P. Salvador , Joe C. Machuca , Bernd Krause , David R. Savage , David A. Arthur , Derek R. Lebzelter
IPC分类号： H01M8/00
CPC分类号： H01M8/04388 , H01M8/04126 , H01M8/04231 , H01M8/0441 , H01M8/04492 , H01M8/04507 , H01M8/04753 , H01M8/04828 , H01M8/04835 , H01M8/04843 , H01M2250/20 , Y02E60/50 , Y02T90/32
摘要： A method for reconditioning a fuel cell stack. The method includes periodically increasing the relative humidity level of the cathode input airflow to the stack to saturate the cell membrane electrode assemblies to be greater than the relative humidity levels during normal stack operating conditions. The method also includes providing hydrogen to the anode side of the fuel cell stack at system shut down while the membrane electrode assemblies are saturated without stack loads being applied so that the hydrogen crosses the cell membranes to the cathode side and reacts with oxygen to reduce stack contaminants.
摘要翻译： 一种用于再燃燃料电池堆的方法。 该方法包括在正常堆叠操作条件期间周期性地增加阴极输入气流到堆叠的相对湿度水平以使细胞膜电极组件饱和，以使其大于相对湿度水平。 该方法还包括在系统关闭时向燃料电池堆的阳极侧提供氢气，同时膜电极组件饱和而不施加堆叠负载，使得氢气穿过细胞膜至阴极侧并与氧反应以减少堆积 污染物
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5.发明申请SHUTDOWN STRATEGY TO AVOID CARBON CORROSION DUE TO SLOW HYDROGEN/AIR INTRUSION RATES 有权由于缓慢的氢气/空气侵入速率，避免碳腐蚀的关闭策略公开(公告)号：US20100143754A1
公开(公告)日：2010-06-10
申请号：US12327957
申请日：2008-12-04
申请人： Thomas A. Greszler , Gary M. Robb , John P. Salvador , Balasubramanian Lakshmanan , Hubert Gasteiger
发明人： Thomas A. Greszler , Gary M. Robb , John P. Salvador , Balasubramanian Lakshmanan , Hubert Gasteiger
CPC分类号： H01M8/04303 , H01M8/04097 , H01M8/04223 , H01M8/04302 , H01M8/242 , H01M8/2483 , Y02E60/50
摘要： A fuel cell system including a fuel cell stack having a plurality of fuel cells, each of the fuel cells including an electrolyte membrane disposed between an anode and a cathode, an anode supply manifold in fluid communication with the anodes of the fuel cells, the anode supply manifold providing fluid communication between a source of hydrogen and the anodes, an anode exhaust manifold in fluid communication with the anodes of the fuel cells, and a fan in fluid communication with the anodes of the fuel cells, wherein the fan controls a flow of fluid through the anodes of the fuel cells after the fuel cell system is shutdown.
摘要翻译： 一种燃料电池系统，包括具有多个燃料电池的燃料电池堆，每个燃料电池包括设置在阳极和阴极之间的电解质膜，与燃料电池的阳极流体连通的阳极供应歧管，阳极 供应歧管，其提供氢源和阳极之间的流体连通，与燃料电池的阳极流体连通的阳极排气歧管以及与燃料电池的阳极流体连通的风扇，其中风扇控制 在燃料电池系统关闭之后通过燃料电池的阳极的流体。
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公开(公告)号：US20090081491A1
公开(公告)日：2009-03-26
申请号：US11859300
申请日：2007-09-21
申请人： David A. Arthur , John P. Salvador , Seth E. Lerner , Balasubramanian Lakshmanan , Abdullah B. Alp
发明人： David A. Arthur , John P. Salvador , Seth E. Lerner , Balasubramanian Lakshmanan , Abdullah B. Alp
IPC分类号： H01M8/02
CPC分类号： H01M8/04619 , H01M8/04223 , H01M8/04231 , H01M8/04302 , H01M8/04402 , H01M8/0441 , H01M8/04447 , H01M8/04552 , H01M8/04753 , H01M8/04761 , H01M8/04955 , H01M2008/1095 , Y02B90/14
摘要： A method for providing a fast and reliable start-up of a fuel cell system. The method uses a stack voltage response to a load to assess if hydrogen and oxygen are being sufficiently distributed to all of the fuel cells by coupling an auxiliary load to the fuel cell stack until a predetermined minimum cell voltage has been reached or a first predetermined time period has elapsed. The method then determines whether a minimum cell voltage has dropped to a first predetermined voltage and, if so, reduces the maximum power allowed to be below the first predetermined voltage value, determines whether the minimum cell voltage in the stack is below a second predetermined voltage, or determines whether the minimum cell voltage drop rate is greater than a predetermined voltage drop rate. If none of these conditions are met, the method returns to loading the stack with system components.
摘要翻译： 一种用于提供快速可靠的燃料电池系统启动的方法。 该方法使用对负载的堆叠电压响应来评估氢和氧是否通过将辅助负载耦合到燃料电池堆而充分地分配给所有燃料电池，直到达到预定的最小电池电压或第一预定时间 时间过去了 然后，该方法确定最小单元电压是否已经下降到第一预定电压，如果是，则将允许的最大功率减小到低于第一预定电压值，确定堆叠中的最小单元电压是否低于第二预定电压 ，或者确定最小单元电压降率是否大于预定的电压降率。 如果没有满足这些条件，则该方法返回使用系统组件加载堆栈。
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公开(公告)号：US06517963B2
公开(公告)日：2003-02-11
申请号：US09736470
申请日：2000-12-13
IPC分类号： H01M804
CPC分类号： H01M8/0668 , H01M4/8605 , H01M4/92 , H01M4/96 , H01M8/0488 , H01M8/0491 , H01M8/0612 , H01M8/0681 , H01M8/1004
摘要： A fuel cell system includes a fuel cell having an electrode, and an electrochemical cell having a device. The electrochemical cell includes a cathode, an anode in fluid communication with the electrode of the fuel cell, and an electrolyte in electrical communication with the cathode and the anode. The device is in electrical communication with the anode of the electrochemical cell and adapted to vary the potential of the anode. The electrochemical cell and the device are capable of reducing an amount of carbon monoxide that enters the fuel cell system.
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8.发明授权Anode bleed control strategy for improved water management and hydrogen utilization 有权改善水管理和氢利用的阳极排放控制策略公开(公告)号：US08855942B2
公开(公告)日：2014-10-07
申请号：US11764089
申请日：2007-06-15
CPC分类号： H01M8/04462 , H01M8/04231 , H01M8/04761 , H01M8/04992 , Y02E60/50
摘要： A control strategy for bleeding an anode side of fuel cell stack in a fuel cell system that improves water management and addresses durability and performance concerns. The method includes determining when to begin the anode bleed, typically by estimating or measuring the amount of nitrogen in the anode side of the stack. The method also includes determining when to end the anode bleed based on the volume of gas that has been bled. The method determines the mole flow rate of the anode gas flowing through a bleed valve, integrates the mole flow rate to get the number of moles of the gas that have passed through the bleed valve, determines a desired amount of moles to be bled, and ends the bleed when the actual number of moles of the gas equals the desired number of moles of the gas.
摘要翻译： 用于在燃料电池系统中排出燃料电池堆的阳极侧的控制策略，其改善水管理并解决耐久性和性能问题。 该方法包括确定何时开始阳极渗出，通常通过估计或测量堆叠的阳极侧的氮的量来确定。 该方法还包括基于已经排出的气体的体积确定何时结束阳极流出。 该方法确定流过放气阀的阳极气体的摩尔流速，将摩尔流量积分得到通过排放阀的气体的摩尔数，确定要排出的所需摩尔数，以及 当气体的实际摩尔数等于所需气体摩尔数时，结束渗流。
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公开(公告)号：US20140072893A1
公开(公告)日：2014-03-13
申请号：US13612325
申请日：2012-09-12
申请人： Robert J. Moses , Balasubramanian Lakshmanan , Daniel T. Folmsbee , Daniel I. Harris , Swaminatha P. Kumaraguru
发明人： Robert J. Moses , Balasubramanian Lakshmanan , Daniel T. Folmsbee , Daniel I. Harris , Swaminatha P. Kumaraguru
CPC分类号： H01M8/04552 , H01M8/04223 , H01M8/043 , H01M8/04447 , H01M8/04455 , H01M8/04753 , H01M8/04798 , H01M8/04873 , H01M8/0488 , H01M8/04955 , H01M16/006 , Y02E60/50
摘要： A system and method for limiting voltage cycling of a fuel cell stack during a stand-by mode by providing power from a battery to the stack while the stack is turned off. The method includes monitoring the voltage of each of the fuel cells in the fuel cell stack and determining an average cell voltage of the fuel cells in the fuel cell stack. The method also determines whether the average cell voltage of the fuel cells in the fuel cell stack has fallen below a predetermined voltage value and, if so, applies a voltage potential to the fuel cell stack to increase the average cell voltage above the predetermined voltage value.
摘要翻译： 一种用于在待机模式期间通过在堆叠关闭时从电池向堆叠提供电力来限制燃料电池堆的电压循环的系统和方法。 该方法包括监测燃料电池堆中每个燃料电池的电压并确定燃料电池堆中的燃料电池的平均电池电压。 该方法还确定燃料电池堆中的燃料电池的平均电池电压是否已经下降到预定电压值以下，如果是，则向燃料电池堆施加电压电位以将平均电池电压增加到高于预定电压值 。
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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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