公开(公告)号：US08855942B2

公开(公告)日：2014-10-07

申请号：US11764089

申请日：2007-06-15

申请人： Prasad Gade ,  Manish Sinha ,  Jon R. Sienkowski ,  Balasubramanian Lakshmanan

发明人： Prasad Gade ,  Manish Sinha ,  Jon R. Sienkowski ,  Balasubramanian Lakshmanan

IPC分类号： G01N31/00 ,  H01M8/04

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。

公开(公告)号：US20080312849A1

公开(公告)日：2008-12-18

申请号：US11764089

申请日：2007-06-15

申请人： Prasad Gade ,  Manish Sinha ,  Jon R. Sienkowski ,  Balasubramanian Lakshmanan

发明人： Prasad Gade ,  Manish Sinha ,  Jon R. Sienkowski ,  Balasubramanian Lakshmanan

IPC分类号： G01F1/34

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。

公开(公告)号：US20090111000A1

公开(公告)日：2009-04-30

申请号：US11928608

申请日：2007-10-30

申请人： Abdullah B. Alp ,  Prasad Gade ,  Jon R. Sienkowski

发明人： Abdullah B. Alp ,  Prasad Gade ,  Jon R. Sienkowski

IPC分类号： H01M8/00

CPC分类号： H01M8/0662 ,  H01M8/04223 ,  H01M8/04225 ,  H01M8/2457

摘要： A system for bleeding the anode side of first and second split fuel cell stacks in a fuel cell system that employs anode flow-shifting, where each split stack includes a bleed valve. The system determines that one or both of the bleed valves is stuck in an open position if there is flow through an orifice and a bleed has not been commanded. A shut-off valve is then used to provide the bleed if the cathode exhaust gas is able to dilute the hydrogen in the bled anode exhaust gas. An outlet valve between the first and second split stacks is used to bleed the anode exhaust gas if the cathode exhaust gas is not significant enough to dilute the hydrogen in the anode exhaust gas. If the first or second bleed valve is stuck in the closed position, then the outlet valve is used to provide the bleed.

摘要翻译： 一种用于将燃料电池系统中的第一和第二分离式燃料电池堆的阳极侧排出的系统，该燃料电池系统采用阳极流动变换，其中每个分体堆叠包括排放阀。 如果流过孔口并且没有命令出血，则该系统确定一个或两个放气阀被卡在打开位置。 然后，如果阴极废气能够稀释排出的阳极废气中的氢气，则使用截止阀来提供渗流。 如果阴极废气不足以稀释阳极废气中的氢气，则第一和第二分裂堆叠之间的出口阀用于排出阳极废气。 如果第一或第二放气阀卡在关闭位置，则出口阀用于提供出血。

公开(公告)号：US20080182142A1

公开(公告)日：2008-07-31

申请号：US11669890

申请日：2007-01-31

申请人： Prasad Gade ,  Jon R. Sienkowski ,  Abdullah B. Alp

发明人： Prasad Gade ,  Jon R. Sienkowski ,  Abdullah B. Alp

IPC分类号： H01M8/04

CPC分类号： H01M8/04089 ,  H01M8/0662

摘要： A fuel cell system that controls an anode exhaust gas bleed during power up-transients. The fuel cell system includes a by-pass valve that allows compressor air to by-pass the fuel cell stack and be directly emitted into the cathode exhaust gas stream. The system detects a power up-transient by monitoring the rate of closing of the by-pass valve and the rate of change of an increase in the compressor airflow set-point. If these parameters pass a certain threshold, then the system determines that a power up-transient is occurring, and prevents an anode exhaust gas bleed for a predetermined period of time. If cathode pulsing is occurring where power up-transients come one after another, then the system will continuously reset the time period for preventing the anode exhaust gas bleed until a second time limit is reached, where the bleed is then forced.

摘要翻译： 燃料电池系统，其在上电瞬变期间控制阳极废气流出。 燃料电池系统包括旁通阀，其允许压缩机空气绕过燃料电池堆并且直接排放到阴极废气流中。 该系统通过监测旁通阀的关闭速率和压缩机气流设定点增加的变化率来检测上电瞬变。 如果这些参数通过了一定的阈值，则系统确定正在发生上电瞬变，并且防止阳极废气流出一段预定的时间。 如果阴极脉冲发生在上电瞬间相继出现的情况下，系统将连续重置时间段，以防止阳极废气流失，直到达到第二个时间限制，然后强制泄漏。

公开(公告)号：US08057941B2

公开(公告)日：2011-11-15

申请号：US11764074

申请日：2007-06-15

申请人： Jon R. Sienkowski ,  David A. Arthur ,  Abdullah B. Alp ,  Prasad Gade

发明人： Jon R. Sienkowski ,  David A. Arthur ,  Abdullah B. Alp ,  Prasad Gade

IPC分类号： H01M8/04 ,  H01M8/24

CPC分类号： H01M8/04462 ,  H01M8/04231 ,  H01M8/04552 ,  H01M8/04761

摘要： A method for triggering an anode bleed from split fuel cell stacks in a fuel cell system that employs anode flow-shifting. The method requests the bleed if any one of three different conditions are met. Those conditions include that the concentration of nitrogen in the anode side of the split stacks is above a predetermined percentage, the voltage spread between the maximum cell voltage and the minimum cell voltage of two fuel cells in the split stacks is greater than a predetermined spread voltage and the absolute value of the difference between the overall voltage of the two split stacks is greater than a predetermined voltage. The concentration of nitrogen in the anode can be determined in any suitable manner, such as by a nitrogen cross-over model or a sensor.

摘要翻译： 一种用于在采用阳极流动变换的燃料电池系统中触发来自分离的燃料电池堆的阳极渗出的方法。 如果符合三种不同条件中的任何一种，则该方法请求出血。 这些条件包括：分离堆叠的阳极侧的氮浓度高于预定百分比，分裂堆叠中的两个燃料电池的最大电池电压和最小电池电压之间的电压扩展大于预定的扩展电压 并且两个分组叠层的总电压之间的差的绝对值大于预定电压。 阳极中氮的浓度可以以任何合适的方式确定，例如通过氮交叉模型或传感器。

公开(公告)号：US20080311442A1

公开(公告)日：2008-12-18

申请号：US11764074

申请日：2007-06-15

申请人： Jon R. Sienkowski ,  David A. Arthur ,  Abdullah B. Alp ,  Prasad Gade

发明人： Jon R. Sienkowski ,  David A. Arthur ,  Abdullah B. Alp ,  Prasad Gade

IPC分类号： H01M8/04

CPC分类号： H01M8/04462 ,  H01M8/04231 ,  H01M8/04552 ,  H01M8/04761

摘要： A method for triggering an anode bleed from split fuel cell stacks in a fuel cell system that employs anode flow-shifting. The method requests the bleed if any one of three different conditions are met. Those conditions include that the concentration of nitrogen in the anode side of the split stacks is above a predetermined percentage, the voltage spread between the maximum cell voltage and the minimum cell voltage of two fuel cells in the split stacks is greater than a predetermined spread voltage and the absolute value of the difference between the overall voltage of the two split stacks is greater than a predetermined voltage. The concentration of nitrogen in the anode can be determined in any suitable manner, such as by a nitrogen cross-over model or a sensor.

摘要翻译： 一种用于在采用阳极流动变换的燃料电池系统中触发来自分离的燃料电池堆的阳极渗出的方法。 如果符合三种不同条件中的任何一种，则该方法请求出血。 这些条件包括：分离堆叠的阳极侧的氮浓度高于预定百分比，分裂堆叠中的两个燃料电池的最大电池电压和最小电池电压之间的电压扩展大于预定的扩展电压 并且两个分组叠层的总电压之间的差的绝对值大于预定电压。 阳极中氮的浓度可以以任何合适的方式确定，例如通过氮交叉模型或传感器。

公开(公告)号：US07862941B2

公开(公告)日：2011-01-04

申请号：US11669890

申请日：2007-01-31

申请人： Prasad Gade ,  Jon R. Sienkowski ,  Abdullah B. Alp

发明人： Prasad Gade ,  Jon R. Sienkowski ,  Abdullah B. Alp

IPC分类号： H01M8/04

CPC分类号： H01M8/04089 ,  H01M8/0662

摘要： A fuel cell system that controls an anode exhaust gas bleed during power up-transients. The fuel cell system includes a by-pass valve that allows compressor air to by-pass the fuel cell stack and be directly emitted into the cathode exhaust gas stream. The system detects a power up-transient by monitoring the rate of closing of the by-pass valve and the rate of change of an increase in the compressor airflow set-point. If these parameters pass a certain threshold, then the system determines that a power up-transient is occurring, and prevents an anode exhaust gas bleed for a predetermined period of time. If cathode pulsing is occurring where power up-transients come one after another, then the system will continuously reset the time period for preventing the anode exhaust gas bleed until a second time limit is reached, where the bleed is then forced.

摘要翻译： 燃料电池系统，其在上电瞬变期间控制阳极废气流出。 燃料电池系统包括旁通阀，其允许压缩机空气绕过燃料电池堆并且直接排放到阴极废气流中。 该系统通过监测旁通阀的关闭速率和压缩机气流设定点增加的变化率来检测上电瞬变。 如果这些参数通过了一定的阈值，则系统确定正在发生上电瞬变，并且防止阳极废气流出一段预定的时间。 如果阴极脉冲发生在上电瞬间相继出现的情况下，系统将连续重置时间段，以防止阳极废气流失，直到达到第二个时间限制，然后强制泄漏。

公开(公告)号：US20080141760A1

公开(公告)日：2008-06-19

申请号：US11612525

申请日：2006-12-19

申请人： Jon R. Sienkowski ,  David A. Arthur ,  Abdullah B. Alp ,  Prasad Gade ,  Thomas Weispfenning ,  Peter Willimowski ,  Jurgen Thyroff

发明人： Jon R. Sienkowski ,  David A. Arthur ,  Abdullah B. Alp ,  Prasad Gade ,  Thomas Weispfenning ,  Peter Willimowski ,  Jurgen Thyroff

IPC分类号： G01M3/26

CPC分类号： G01M3/3254 ,  H01M8/04007 ,  H01M8/04089 ,  H01M8/04305 ,  H01M8/0432 ,  H01M8/04388 ,  H01M8/04589 ,  H01M8/04679 ,  H01M2250/20 ,  Y02T90/32

摘要： A diagnostic method of detecting component failures in a fuel cell anode subsystem involves estimating fuel flow through injectors and comparing the estimated flow with a model based upon the system parameters. An observer based model is used to determine a residual value, the difference between the hydrogen input and the hydrogen consumed, and the residual is compared with a threshold range. In alternative embodiments, the stack current and the state of the valves are used to calculate the required hydrogen flow through the injectors and the duty cycle of an injector is compared to a tolerance range.

摘要翻译： 检测燃料电池阳极子系统中的部件故障的诊断方法包括估计通过喷射器的燃料流量，并将估计的流量与基于系统参数的模型进行比较。 使用基于观察者的模型来确定残留值，氢输入与消耗的氢之间的差异，并将残差与阈值范围进行比较。 在替代实施例中，堆叠电流和阀的状态用于计算通过喷射器的所需氢气流量，并将喷射器的占空比与公差范围进行比较。

公开(公告)号：US08748053B2

公开(公告)日：2014-06-10

申请号：US11928608

申请日：2007-10-30

申请人： Abdullah B. Alp ,  Prasad Gade ,  Jon R. Sienkowski

发明人： Abdullah B. Alp ,  Prasad Gade ,  Jon R. Sienkowski

IPC分类号： H01M8/04

CPC分类号： H01M8/0662 ,  H01M8/04223 ,  H01M8/04225 ,  H01M8/2457

摘要： A system for bleeding the anode side of first and second split fuel cell stacks in a fuel cell system that employs anode flow-shifting, where each split stack includes a bleed valve. The system determines that one or both of the bleed valves is stuck in an open position if there is flow through an orifice and a bleed has not been commanded. A shut-off valve is then used to provide the bleed if the cathode exhaust gas is able to dilute the hydrogen in the bled anode exhaust gas. An outlet valve between the first and second split stacks is used to bleed the anode exhaust gas if the cathode exhaust gas is not significant enough to dilute the hydrogen in the anode exhaust gas. If the first or second bleed valve is stuck in the closed position, then the outlet valve is used to provide the bleed.

摘要翻译： 一种用于将燃料电池系统中的第一和第二分离式燃料电池堆的阳极侧排出的系统，该燃料电池系统采用阳极流动变换，其中每个分体堆叠包括排放阀。 如果流过孔口并且没有命令出血，则该系统确定一个或两个放气阀被卡在打开位置。 然后，如果阴极废气能够稀释排出的阳极废气中的氢气，则使用截止阀来提供渗流。 如果阴极废气不足以稀释阳极废气中的氢气，则第一和第二分裂堆叠之间的出口阀用于排出阳极废气。 如果第一或第二放气阀卡在关闭位置，则出口阀用于提供出血。

公开(公告)号：US20080145720A1

公开(公告)日：2008-06-19

申请号：US11640073

申请日：2006-12-15

申请人： Manish Sinha ,  Prasad Gade ,  Daniel Difiore

发明人： Manish Sinha ,  Prasad Gade ,  Daniel Difiore

IPC分类号： H01M8/04

CPC分类号： H01M8/04432 ,  H01M8/04089 ,  H01M8/04104 ,  H01M8/04231 ,  H01M8/04462 ,  H01M8/04761 ,  H01M2008/1095 ,  H01M2250/20 ,  Y02T90/32

摘要： A system and method for determining when to provide an anode exhaust gas bleed from a fuel cell stack as the fuel cell stack ages. The method determines the amount of nitrogen flowing from a cathode side to an anode side of the fuel cell stack. The method also determines the amount of nitrogen flowing from the anode side to the cathode side by determining a standard deviation of voltage outputs of the fuel cells, and using the standard deviation as a model for determining the leak rate of nitrogen from the anode side to the cathode side. The method determines the concentration of nitrogen in the anode side based on the nitrogen flow between the cathode and anode side, and opens a bleed valve to bleed the anode exhaust gas if the concentration of nitrogen in the anode side goes above a predetermined value.

摘要翻译： 一种用于当燃料电池堆老化时确定何时提供来自燃料电池堆的阳极废气流出的系统和方法。 该方法确定从燃料电池堆的阴极侧向阳极侧流动的氮的量。 该方法还通过确定燃料电池的电压输出的标准偏差来确定从阳极侧到阴极侧的氮的量，并且使用标准偏差作为用于确定从阳极侧到氮的泄漏率的模型 阴极侧。 该方法基于阴极和阳极侧之间的氮气流量确定阳极侧的氮浓度，并且如果阳极侧的氮浓度超过预定值，则打开放气阀以排出阳极废气。