公开(公告)号：US06959249B2

公开(公告)日：2005-10-25

申请号：US10725680

申请日：2003-12-02

申请人： Bruce Jeffrey Clingerman ,  Kiran Mallavarapu ,  Akbar Chowdhury

发明人： Bruce Jeffrey Clingerman ,  Kiran Mallavarapu ,  Akbar Chowdhury

IPC分类号： H01M8/10 ,  G06F19/00 ,  H01M8/04 ,  H01M16/00

CPC分类号： H01M16/006 ,  H01M8/04567 ,  H01M8/04589 ,  H01M8/04604 ,  H01M8/04753 ,  H01M8/04917 ,  H01M8/04992

摘要： A fuel cell generation system employing a load following algorithm that provides the desired output power from the fuel cell on demand. The system includes a draw current sensor that measures the current drawn from the fuel cell used to satisfy the system load demands. The load following algorithm uses the measured draw current to identify the proper amount of fuel and air to meet the load demands, and then provides a buffer of extra fuel and air to the fuel cell so if the load demand suddenly increases, the fuel cell is able to immediately produce the extra output power. As the current drawn from the fuel cell changes in response to changing load demands, the load following algorithm causes the amount of fuel and air being applied to the fuel cell stack to increase and decrease so that the buffer of extra fuel and air is maintained substantially constant.

摘要翻译： 一种采用负载追踪算法的燃料电池生成系统，其根据需要从燃料电池提供期望的输出功率。 该系统包括一个牵引电流传感器，它测量从用于满足系统负载要求的燃料电池中抽出的电流。 负载跟踪算法使用测量的牵引电流来识别适当的燃料和空气量以满足负载需求，然后向燃料电池提供额外的燃料和空气的缓冲器，因此如果负载需求突然增加，燃料电池是 能够立即产生额外的输出功率。 随着从燃料电池抽取的电流响应于负载需求的变化而变化，负载跟随算法导致燃料和空气被施加到燃料电池堆的量增加和减少，使得额外的燃料和空气的缓冲器基本保持 不变。

公开(公告)号：US07235318B2

公开(公告)日：2007-06-26

申请号：US10785654

申请日：2004-02-24

申请人： Bruce Jeffrey Clingerman ,  John P. Salvador ,  Ronald L. James

发明人： Bruce Jeffrey Clingerman ,  John P. Salvador ,  Ronald L. James

IPC分类号： H01M8/04 ,  H01M2/00 ,  H01M8/00

CPC分类号： H01M8/04089 ,  H01M8/04126 ,  H01M8/04223 ,  H01M8/04228

摘要： A fuel cell system that employs a two-position valve at the cathode exhaust gas output for controlling the pressure within the fuel cell stack to control the stack relative humidity. In one embodiment, the two-position valve is switchable between a fully open and a fully closed position, where the valve is opened when the fuel cell system is operating at a low operation temperature and the valve is closed when the fuel cell system is operating at a high operation temperature. A fixed restriction valve is provided in parallel with the two-position valve so that when the two-position valve is fully closed, the proper amount of pressure is provided at the cathode output. In another embodiment, the two-position valve employs sized leak paths so that when the two-position valve is in the closed position, the cathode exhaust gas can still flow through.

摘要翻译： 一种燃料电池系统，其在阴极废气输出处采用两位置阀来控制燃料电池堆内的压力以控制堆叠相对湿度。 在一个实施例中，双位置阀可以在完全打开和完全关闭的位置之间切换，当燃料电池系统在低操作温度下操作时阀被打开，并且当燃料电池系统运行时阀被关闭 在高的操作温度。 与二位置阀并联设置一个固定的限位阀，当两位阀完全关闭时，在阴极输出端提供适当的压力。 在另一个实施例中，双位阀采用大小的泄漏路径，使得当两位置阀处于关闭位置时，阴极废气仍然可以流过。