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公开(公告)号：US20100035097A1
公开(公告)日：2010-02-11
申请号：US12187056
申请日：2008-08-06
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。
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公开(公告)号：US09034530B2
公开(公告)日：2015-05-19
申请号：US12187056
申请日：2008-08-06
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。
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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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公开(公告)号：US09368817B2
公开(公告)日：2016-06-14
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： H01M8/04
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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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。
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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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8.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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9.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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