公开(公告)号：US08389167B2

公开(公告)日：2013-03-05

申请号：US11467585

申请日：2006-08-28

申请人： Patrick Frost ,  Manish Sinha ,  Jason R. Kolodziej

发明人： Patrick Frost ,  Manish Sinha ,  Jason R. Kolodziej

IPC分类号： H01M8/06 ,  H01M8/04

CPC分类号： H01M8/04179

摘要： A system and method for preventing low performing cells in a fuel cell stack. The method includes periodically providing a pulse of the cathode input airflow at low stack current densities, and comparing the current density output of each cell in response to the pulse. Those cells that do not have significant water accumulation will provide one voltage signature and those cells that do have a significant water accumulation will provide another voltage signature. If one or more of the cells exhibit the voltage signature for water accumulation, then the cathode inlet airflow pulses can be provided more often to prevent the cells from failing.

摘要翻译： 一种用于防止燃料电池堆中的低效电池的系统和方法。 该方法包括以低堆叠电流密度周期性地提供阴极输入气流的脉冲，并且响应于脉冲比较每个电池的电流密度输出。 那些没有显着水分积累的细胞将提供一个电压特征，那些确实具有显着水分积累的细胞将提供另一种电压特征。 如果一个或多个电池表现出用于积聚的电压特征，则可以更频繁地提供阴极入口气流脉冲以防止电池发生故障。

公开(公告)号：US07526346B2

公开(公告)日：2009-04-28

申请号：US11009526

申请日：2004-12-10

申请人： Jason R. Kolodziej

发明人： Jason R. Kolodziej

IPC分类号： G05B13/02

CPC分类号： H01M8/04305 ,  H01M8/04358 ,  H01M8/04731 ,  H01M8/04768 ,  H01M8/04992 ,  Y10S903/908 ,  Y10S903/944

摘要： A temperature control scheme for a fuel cell stack thermal sub-system in a fuel cell system that uses a non-linear thermal model and disturbance rejection to provide an optimum stack temperature. The thermal sub-system includes a coolant loop directing a cooling fluid through the stack, a pump for pumping the cooling fluid through the coolant loop, and a radiator for cooling the cooling fluid outside of the fuel cell stack. The system includes a controller for controlling the speed of the pump so as to maintain the temperature of the stack at a desired temperature. The controller uses the thermal model to anticipate a temperature of the cooling fluid out of the fuel cell stack to control the speed of the pump.

摘要翻译： 一种用于燃料电池系统中的燃料电池堆热子系统的温度控制方案，其使用非线性热模型和干扰抑制来提供最佳堆温度。 热子系统包括将冷却流体引导通过堆叠的冷却剂回路，用于将冷却流体泵送通过冷却剂回路的泵，以及用于冷却燃料电池堆外部的冷却流体的散热器。 该系统包括用于控制泵的速度以便将堆的温度保持在期望温度的控制器。 控制器使用热模型来预测冷却流体离开燃料电池堆的温度以控制泵的速度。

公开(公告)号：US07687164B2

公开(公告)日：2010-03-30

申请号：US11858964

申请日：2007-09-21

申请人： Patrick Frost ,  Manish Sinha ,  Jason R. Kolodziej

发明人： Patrick Frost ,  Manish Sinha ,  Jason R. Kolodziej

IPC分类号： H01M8/04 ,  H01M8/00

CPC分类号： H01M8/04126 ,  H01M8/04358 ,  H01M8/0438 ,  H01M8/04529 ,  H01M8/04649 ,  H01M8/04731 ,  H01M8/04835 ,  H01M8/0485 ,  H01M2008/1095

摘要： A fuel cell system is provided, including an HFR measurement device in electrical communication with a fuel cell stack. The HFR measurement is used online to measure an HFR of the fuel cell stack suitable for calculation of a d(HFR)/d(RH) ratio. A humidity regulator is provided in fluid communication with the fuel cell stack. A controller periodically changes stack operating conditions to perturb an RH of the fuel cell stack, process the HFR response, and compute the d(HFR)/d(RH) ratio. A method for online identification and control of the fuel cell stack humidification is also provided. The d(HFR)/d(RH) ratio is an auxiliary measurement of membrane hydration which is used as a feedback for hydration control.

摘要翻译： 提供了一种燃料电池系统，包括与燃料电池堆电连通的HFR测量装置。 在线使用HFR测量来测量适合于计算d（HFR）/ d（RH）比的燃料电池堆的HFR。 提供与燃料电池堆流体连通的湿度调节器。 控制器周期性地改变堆操作条件以扰乱燃料电池堆的RH，处理HFR响应，并计算d（HFR）/ d（RH）比。 还提供了用于在线识别和控制燃料电池堆加湿的方法。 d（HFR）/ d（RH）比是膜水合的辅助测量，用作水合控制的反馈。

公开(公告)号：US20090286111A1

公开(公告)日：2009-11-19

申请号：US12119686

申请日：2008-05-13

申请人： Jason R. Kolodziej

发明人： Jason R. Kolodziej

IPC分类号： H01M8/04

CPC分类号： H01M8/04007 ,  H01M8/04358 ,  H01M8/04679 ,  H01M8/04723 ,  H01M8/04768 ,  H01M2008/1095 ,  Y02E60/50

摘要： A fuel cell system that employs an on-line self-tuning algorithm that provides temperature control of a fuel cell stack in response to disturbances on the system. The system includes a thermal sub-system having a cooling fluid pump that pumps a cooling fluid through the fuel cell stack, a temperature sensor that measures the temperature of the cooling fluid out of the stack, a radiator that cooling the cooling fluid from the fuel cell stack and a by-pass valve that selectively controls how much of the cooling fluid flows through the radiator or by-passes the radiator. A controller controls the position of the by-pass valve in response to a temperature signal from the temperature sensor. The controller calculates a plurality of variables and a dead-time value, and determines whether the dead-time value should be increased, decreased or kept the same based on an estimate of a dead-time plant model.

摘要翻译： 一种燃料电池系统，其采用在线自调谐算法，其提供响应于系统上的干扰的燃料电池堆的温度控制。 该系统包括具有冷却流体泵的热子系统，其将冷却流体泵送通过燃料电池堆，温度传感器，其测量冷却流体离开堆叠的温度;散热器，其从燃料冷却冷却流体 电池堆和旁路阀，其选择性地控制多少冷却流体流过散热器或绕过散热器。 控制器响应于来自温度传感器的温度信号控制旁通阀的位置。 控制器计算多个变量和死时间值，并且基于死区时间设备模型的估计来确定死区时间值是否应当增加，减小或保持相同。

公开(公告)号：US20080050620A1

公开(公告)日：2008-02-28

申请号：US11467585

申请日：2006-08-28

申请人： Patrick Frost ,  Manish Sinha ,  Jason R. Kolodziej

发明人： Patrick Frost ,  Manish Sinha ,  Jason R. Kolodziej

IPC分类号： H01M8/04 ,  G01N27/00

CPC分类号： H01M8/04179

摘要： A system and method for preventing low performing cells in a fuel cell stack. The method includes periodically providing a pulse of the cathode input airflow at low stack current densities, and comparing the current density output of each cell in response to the pulse. Those cells that do not have significant water accumulation will provide one voltage signature and those cells that do have a significant water accumulation will provide another voltage signature. If one or more of the cells exhibit the voltage signature for water accumulation, then the cathode inlet airflow pulses can be provided more often to prevent the cells from failing.

摘要翻译： 一种用于防止燃料电池堆中的低效电池的系统和方法。 该方法包括以低堆叠电流密度周期性地提供阴极输入气流的脉冲，并且响应于脉冲比较每个电池的电流密度输出。 那些没有显着水分积累的细胞将提供一个电压特征，那些确实具有显着水分积累的细胞将提供另一种电压特征。 如果一个或多个电池表现出用于积聚的电压特征，则可以更频繁地提供阴极入口气流脉冲以防止电池发生故障。