利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

62 条记录 (耗时 0.057 秒)

    Method for fast and reliable fuel cell system start-ups
    5.
    发明授权
    Method for fast and reliable fuel cell system start-ups 有权
    快速可靠的燃料电池系统启动方法

    公开(公告)号：US07993787B2

    公开(公告)日：2011-08-09

    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： H01M8/04

    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。

    Method for Fast and Reliable Fuel Cell System Start-Ups
    6.
    发明申请
    Method for Fast and Reliable Fuel Cell System Start-Ups 有权
    快速可靠的燃料电池系统启动方法

    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。

    Adaptive gain scheduled control for current limitation based on voltage performance of a fuel cell system
    7.
    发明授权
    Adaptive gain scheduled control for current limitation based on voltage performance of a fuel cell system 有权
    基于燃料电池系统的电压性能的电流限制的自适应增益调度控制

    公开(公告)号：US07955743B2

    公开(公告)日：2011-06-07

    申请号：US12027049

    申请日：2008-02-06

    申请人： Sriram Ganapathy ,  David A. Arthur ,  Manish Sinha ,  John P. Salvador ,  David R. Savage ,  Frank X. Leo

    发明人： Sriram Ganapathy ,  David A. Arthur ,  Manish Sinha ,  John P. Salvador ,  David R. Savage ,  Frank X. Leo

    IPC分类号： H01M8/04

    CPC分类号： H01M8/04649 ,  H01M8/04559 ,  H01M8/04589 ,  H01M8/0491 ,  H01M8/0494 ,  H01M8/04992

    摘要： A system and method for limiting the output current of a fuel cell stack as the stack degrades overtime. A look-up table identifies a predetermined voltage set-point for stack current density. A first comparator provides a voltage difference signal between the set-point and the stack voltage. The voltage difference signal is provided to a controller, such as a proportional-integral controller, that provides a current limiting signal. The current limiting signal and a current request signal are provided to a second comparator that selects which signal will be used to limit the maximum output current of the stack. A polarization curve estimator estimates parameters of the stack that will change over the life of the stack. The parameters are provided to a gain scheduler that provides gains to the controller that are based on where in the life of the stack it is currently operating.

    摘要翻译： 一种用于限制燃料电池堆的输出电流的系统和方法，因为堆叠降低了加班时间。 查找表识别堆电流密度的预定电压设定点。 第一比较器在设定点和堆叠电压之间提供电压差信号。 电压差信号被提供给提供限流信号的控制器，例如比例积分控制器。 电流限制信号和当前请求信号被提供给第二比较器，第二比较器选择哪个信号将用于限制堆叠的最大输出电流。 极化曲线估计器估计将在堆栈的寿命内改变的堆栈的参数。 这些参数被提供给增益调度器，其为控制器提供增益，其基于其当前正在操作的堆栈的寿命。

    Adaptive Gain Scheduled Control for Current Limitation Based on Voltage Performance of a Fuel Cell System
    8.
    发明申请
    Adaptive Gain Scheduled Control for Current Limitation Based on Voltage Performance of a Fuel Cell System 有权
    基于燃料电池系统电压性能的电流限制的自适应增益调度控制

    公开(公告)号：US20090197126A1

    公开(公告)日：2009-08-06

    申请号：US12027049

    申请日：2008-02-06

    申请人： Sriram Ganapathy ,  David A. Arthur ,  Manish Sinha ,  John P. Salvador ,  David R. Savage ,  Frank X. Leo

    发明人： Sriram Ganapathy ,  David A. Arthur ,  Manish Sinha ,  John P. Salvador ,  David R. Savage ,  Frank X. Leo

    IPC分类号： H01M8/04

    CPC分类号： H01M8/04649 ,  H01M8/04559 ,  H01M8/04589 ,  H01M8/0491 ,  H01M8/0494 ,  H01M8/04992

    摘要： A system and method for limiting the output current of a fuel cell stack as the stack degrades overtime. A look-up table identifies a predetermined voltage set-point for stack current density. A first comparator provides a voltage difference signal between the set-point and the stack voltage. The voltage difference signal is provided to a controller, such as a proportional-integral controller, that provides a current limiting signal. The current limiting signal and a current request signal are provided to a second comparator that selects which signal will be used to limit the maximum output current of the stack. A polarization curve estimator estimates parameters of the stack that will change over the life of the stack. The parameters are provided to a gain scheduler that provides gains to the controller that are based on where in the life of the stack it is currently operating.

    摘要翻译： 一种用于限制燃料电池堆的输出电流的系统和方法，因为堆叠降低了加班时间。 查找表识别堆电流密度的预定电压设定点。 第一比较器在设定点和堆叠电压之间提供电压差信号。 电压差信号被提供给提供限流信号的控制器，例如比例积分控制器。 电流限制信号和当前请求信号被提供给第二比较器，第二比较器选择哪个信号将用于限制堆叠的最大输出电流。 极化曲线估计器估计将在堆栈的寿命内改变的堆栈的参数。 这些参数被提供给增益调度器，其为控制器提供增益，其基于其当前正在操作的堆栈的寿命。

    Adaptive limitation of standby mode to enhance fuel cell system life
    9.
    发明授权
    Adaptive limitation of standby mode to enhance fuel cell system life 有权
    备用模式的自适应限制，以提高燃料电池系统的使用寿命

    公开(公告)号：US08945785B2

    公开(公告)日：2015-02-03

    申请号：US13345288

    申请日：2012-01-06

    申请人： Daniel I. Harris ,  Derek R. Lebzelter ,  John P. Salvador ,  William H. Pettit ,  Akbar Chowdhury ,  Edward G. Himes

    发明人： Daniel I. Harris ,  Derek R. Lebzelter ,  John P. Salvador ,  William H. Pettit ,  Akbar Chowdhury ,  Edward G. Himes

    IPC分类号： H01M8/04

    CPC分类号： H01M8/04955 ,  H01M8/04559

    摘要： A system and method for reducing the frequency of stack stand-by mode events, if necessary, as a fuel cell stack ages and experiences lower performance. The method determines an irreversible voltage loss of the fuel cell stack at predetermined time intervals and determines a stack voltage degradation variable based on the irreversible voltage loss. The method also determines if the stack voltage degradation variable indicates that the fuel cell stack will not meet predetermined stack end-of-life voltage requirements and calculates a maximum allowed voltage degradation rate of the fuel cell stack. The method calculates a maximum number of stand-by mode events per unit time that can be allowed to prevent the stack from exceeding the maximum allowed degradation rate and controls the number of stand-by mode events based on the calculated maximum number of stand-by mode events.

    摘要翻译： 如果需要，当燃料电池堆老化并且经历较低的性能时，用于降低堆叠待机模式事件的频率的系统和方法。 该方法以预定的时间间隔确定燃料电池堆的不可逆电压损失，并且基于不可逆的电压损耗确定堆电压劣化变量。 该方法还确定堆叠电压劣化变量是否表明燃料电池堆不能满足预定的堆积寿命电压要求并且计算燃料电池堆的最大允许电压降低率。 该方法计算出每单位时间的待机模式事件的最大次数，可以被允许以防止堆栈超过允许的最大降级率，并根据计算的最大待机数量控制待机模式事件的数量 模式事件。

    Method for improving FCS reliability after end cell heater failure
    10.
    发明授权
    Method for improving FCS reliability after end cell heater failure 有权
    提高终端电池加热器故障后FCS可靠性的方法

    公开(公告)号：US08231989B2

    公开(公告)日：2012-07-31

    申请号：US11925422

    申请日：2007-10-26

    申请人： Derek R Lebzelter ,  William S Marley ,  John P. Salvador ,  Abdullah B. Alp ,  Loren Devries

    发明人： Derek R Lebzelter ,  William S Marley ,  John P. Salvador ,  Abdullah B. Alp ,  Loren Devries

    IPC分类号： H01M8/04

    CPC分类号： H01M8/04037 ,  H01M8/04358 ,  H01M8/04365 ,  H01M8/04597 ,  H01M8/04679 ,  H01M8/04723 ,  H01M8/04753 ,  H01M8/04768 ,  H01M8/04835 ,  H01M8/0494

    摘要： A method for improving fuel cell system reliability in the event of end cell heater failure in a fuel cell stack. The method includes detecting that an end cell heater has failed. If an end cell heater failure is detected, then the method performs one or more of setting a cooling fluid pump to a predetermined speed that drives a cooling fluid through cooling fluid flow channels in the fuel cell stack, limiting the output power of the fuel cell stack or the net power of the fuel cell system, limiting the maximum temperature of the cooling fluid flowing out of the stack, turning off stack anti-flooding algorithms that may be used to remove water from reactant gas flow channels in the stack, and turning off cathode stoichiometry adjustments for relative humidity control in response to water accumulating in cathode flow channels in the fuel cell stack.

    摘要翻译： 一种用于在燃料电池堆中终端电池加热器故障的情况下提高燃料电池系统的可靠性的方法。 该方法包括检测终端电池加热器是否发生故障。 如果检测到终端电池加热器故障，则该方法执行一个或多个将冷却液泵设定到通过燃料电池堆中的冷却流体流动通道驱动冷却流体的预定速度，限制燃料电池的输出功率 堆叠或燃料电池系统的净功率，限制流出堆叠的冷却流体的最高温度，关闭可用于从堆叠中的反应气体流动通道去除水的堆叠防淹没算法，以及转动 响应于在燃料电池堆中的阴极流动通道中积聚的水，进行相对湿度控制的阴极化学计量调节。