公开(公告)号：US06861167B2

公开(公告)日：2005-03-01

申请号：US09916213

申请日：2001-07-25

申请人： Brian Wells ,  Tan Duc Uong ,  Charles Joseph Schembri ,  Gregory A. James ,  George Alexander Skinner ,  Benno Giesecke

发明人： Brian Wells ,  Tan Duc Uong ,  Charles Joseph Schembri ,  Gregory A. James ,  George Alexander Skinner ,  Benno Giesecke

IPC分类号： H01M8/10 ,  H01M8/04 ,  H01M8/00

CPC分类号： H01M8/04231

摘要： A fuel cell system includes fuel cells forming a fuel cell stack, having a fuel passage and an oxidant passage. A purge valve is coupled to the fuel passage to exhaust contaminants, and a controller is coupled to temporarily increase the oxidant stream flow rate through the oxidant passage, and to temporarily open the fuel purge valve, if a voltage across a pair of fuel cells is less than a defined threshold voltage. In this resuscitation step, the oxidant flow rate can be temporarily increased by increasing a duty cycle of an air compressor by approximately 50% for a duration of between approximately 5 to 10 seconds. The controller can further shut down fuel cell operation if a voltage across a pair of fuel cells is less than a defined threshold voltage in an inter-resuscitation period immediately following the resuscitation step.

摘要翻译： 燃料电池系统包括形成具有燃料通道和氧化剂通道的燃料电池堆的燃料电池。 净化阀联接到燃料通道以排出污染物，并且控制器被耦合以临时增加通过氧化剂通道的氧化剂流流速，并且如果一对燃料电池两端的电压为 小于定义的阈值电压。 在该复苏步骤中，通过将空气压缩机的占空比增加大约50％，持续约5至10秒之间，可以临时增加氧化剂流速。 如果一对燃料电池上的电压在复苏步骤之后的复苏期间小于定义的阈值电压，则控制器可以进一步关闭燃料电池操作。

公开(公告)号：US06960401B2

公开(公告)日：2005-11-01

申请号：US09916211

申请日：2001-07-25

申请人： Russell Howard Barton ,  Tan Duc Uong ,  Charles Joseph Schembri ,  George Alexander Skinner

发明人： Russell Howard Barton ,  Tan Duc Uong ,  Charles Joseph Schembri ,  George Alexander Skinner

IPC分类号： H01M8/10 ,  H01M8/04 ,  H01M8/06

CPC分类号： H01M8/04231 ,  H01M8/04007 ,  H01M8/04119

摘要： A purge system for fuel cell stack includes a purge valve to regulate exhaust from the fuel cell stack in response control signals from a controller in response to a voltage across a purge cell portion of a fuel cell stack. The purge valve is opened when the voltage across the purge cell portion falls below a defined percentage of a threshold voltage. The threshold voltage can be equal to an average cell voltage of some or all of the fuel cells of the fuel cell stack. The purge may include one or more successive openings of the purge valve of controlled purge durations.

摘要翻译： 用于燃料电池堆的吹扫系统包括净化阀，以响应来自燃料电池堆的净化单元部分的电压的来自控制器的响应控制信号来调节来自燃料电池堆的排气。 当净化池部分两端的电压低于阈值电压的规定百分比时，净化阀打开。 阈值电压可以等于燃料电池堆的一些或所有燃料电池的平均电池电压。 吹扫可以包括被控吹扫持续时间的净化阀的一个或多个连续的开口。