公开(公告)号：US20070154742A1

公开(公告)日：2007-07-05

申请号：US11321885

申请日：2005-12-29

申请人： Hao Tang ,  Zhigang Qi ,  Manikandan Ramani ,  Kenneth Rush ,  Lam Wong ,  Noel Miklas

发明人： Hao Tang ,  Zhigang Qi ,  Manikandan Ramani ,  Kenneth Rush ,  Lam Wong ,  Noel Miklas

IPC分类号： H01M8/04

CPC分类号： H01M8/04303 ,  H01M8/04223 ,  H01M8/04228 ,  H01M8/04231 ,  H01M8/0612 ,  H01M8/241 ,  H01M2008/1095

摘要： A technique to shut down a fuel cell stack includes reducing an oxidant flow through the fuel cell stack, and decreasing the current of the fuel cell stack while maintaining an approximately constant rate of fuel flow to the fuel cell stack. Once the power output of the fuel cell stack reaches zero due to the depletion of oxygen at the cathode, the fuel flow to the fuel cell stack anode is then halted. Then, the stack is either isolated from the reactant streams, or the cathode is briefly purged by the fuel before the stack is isolated from the reactant streams, or both the anode and the cathode are purged in sequence by air before the stack is isolated from the reactant streams.

摘要翻译： 关闭燃料电池堆的技术包括减少通过燃料电池堆的氧化剂流，以及降低燃料电池堆的电流，同时保持大致恒定的燃料流量到燃料电池堆。 一旦燃料电池堆的功率输出由于阴极处的氧气的耗尽而达到零，则停止向燃料电池堆阳极的燃料流。 然后，将堆叠从反应物流中分离出来，或者在堆叠与反应物流分离之前，将燃料短暂地吹扫出来，或者在将堆叠与反应物分离之前，阳极和阴极依次被空气吹扫 反应物流。

公开(公告)号：US20070259219A1

公开(公告)日：2007-11-08

申请号：US11645244

申请日：2006-12-22

申请人： Jing Ou ,  Zhi Zhou ,  Vishnu Poonamallee ,  Lam Wong ,  Kenneth Rush ,  Dustan Skidmore ,  John Parks

发明人： Jing Ou ,  Zhi Zhou ,  Vishnu Poonamallee ,  Lam Wong ,  Kenneth Rush ,  Dustan Skidmore ,  John Parks

IPC分类号： H01M8/00

CPC分类号： H01M8/04552 ,  H01M8/04679 ,  H01M8/04753 ,  H01M8/04776 ,  H01M8/04955 ,  H01M2008/1095

摘要： A technique that is usable with a fuel cell stack includes detecting an unhealthy condition of the stack, such as carbon monoxide poisoning, flooding, or fuel starvation, and implementing a recovery action to correct the detected condition. The technique further includes observing the response of the stack to the recovery action to distinguish between unhealthy conditions that have the same indications. In the event that multiple unhealthy conditions are present concurrently, the technique also includes determining an appropriate sequence of recovery actions to correct each of the unhealthy conditions.

摘要翻译： 可用于燃料电池堆的技术包括检测堆的不健康状况，例如一氧化碳中毒，淹没或燃料不足，以及实施恢复动作以校正检测到的状况。 该技术还包括观察堆栈对恢复动作的响应，以区分具有相同指示的不健康状况。 在多个不健康状况同时出现的情况下，该技术还包括确定适当的恢复动作顺序以纠正每个不健康状况。