公开(公告)号：US20090110966A1

公开(公告)日：2009-04-30

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： H01M8/00

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。

公开(公告)号：US07276308B2

公开(公告)日：2007-10-02

申请号：US10696267

申请日：2003-10-29

申请人： Volker Formanski ,  Thomas Herbig ,  George R. Woody ,  John P. Salvador ,  Steven D. Burch ,  Uwe Hannesen

发明人： Volker Formanski ,  Thomas Herbig ,  George R. Woody ,  John P. Salvador ,  Steven D. Burch ,  Uwe Hannesen

IPC分类号： H01M8/04

CPC分类号： H01M8/04022 ,  H01M8/04014 ,  H01M8/04074 ,  H01M8/04111 ,  H01M8/04134 ,  H01M8/04164 ,  H01M2250/20 ,  Y02T90/32

摘要： A fuel cell system that employs a recuperative heat exchanger to provide additional cooling for the compressed charge air applied to the cathodes of the fuel cells in the fuel cell stack. The cathode exhaust gas is applied to the recuperative heat exchanger so that the cathode exhaust gas cools the charge air heated by the compressed air. A cathode exhaust gas expander is provided in combination with the recuperative heat exchanger that uses the energy in the heated cathode exhaust gas to power the charge air compressor. An anode exhaust gas combustor can be provided that burns residual hydrogen in the anode exhaust gas to further heat the cathode exhaust gas before it is applied to the expander.

摘要翻译： 一种燃料电池系统，其采用换热热交换器，为施加到燃料电池堆中的燃料电池的阴极的压缩充气提供额外的冷却。 阴极废气被施加到热交换器，使得阴极排气冷却由压缩空气加热的加压空气。 与使用加热的阴极废气中的能量来为增压空气压缩机供电的回热换热器组合提供阴极排气扩张器。 可以提供阳极废气燃烧器，其在阳极废气中燃烧残留的氢气，以在其被施加到膨胀器之前进一步加热阴极废气。