公开(公告)号：US20060093879A1

公开(公告)日：2006-05-04

申请号：US11231285

申请日：2005-09-20

申请人： Deliang Yang ,  Margaret Steinbugler ,  Richard Sawyer ,  Leslie Van Dine ,  Carl Reiser

发明人： Deliang Yang ,  Margaret Steinbugler ,  Richard Sawyer ,  Leslie Van Dine ,  Carl Reiser

IPC分类号： H01M8/04

CPC分类号： H01M8/04302 ,  H01M8/0258 ,  H01M8/04007 ,  H01M8/04022 ,  H01M8/04097 ,  H01M8/04223 ,  H01M8/04231 ,  H01M8/04238 ,  H01M8/241 ,  H01M8/2457 ,  H01M16/003

摘要： A procedure for starting up a fuel cell system that is disconnected from its primary load and that has air in both its cathode and anode flow fields includes a) connecting an auxiliary resistive load across the cell to reduce the cell voltage; b) initiating a recirculation of the anode flow field exhaust through a recycle loop and providing a limited flow of hydrogen fuel into that recirculating exhaust; c) catalytically reacting the added fuel with oxygen present in the recirculating gases until substantially no oxygen remains within the recycle loop; disconnecting the auxiliary load; and then d) providing normal operating flow rates of fuel and air into respective anode and cathode flow fields and connecting the primary load across the cell. The catalytic reaction may take place on the anode or within a catalytic burner disposed within the recycle loop. The procedure allows start-up of the fuel cell system without the use of an inert gas purge while minimizing dissolution of the catalyst and corrosion of the catalyst support during the start-up process.

公开(公告)号：US20070298290A1

公开(公告)日：2007-12-27

申请号：US11888709

申请日：2007-08-02

申请人： Timothy Bekkedahl ,  Lawrence Bregoli ,  Ned Cipollini ,  Timothy Patterson ,  Marianne Pemberton ,  Jonathan Puhalski ,  Carl Reiser ,  Richard Sawyer ,  Margaret Steinbugler ,  Jung Yi

发明人： Timothy Bekkedahl ,  Lawrence Bregoli ,  Ned Cipollini ,  Timothy Patterson ,  Marianne Pemberton ,  Jonathan Puhalski ,  Carl Reiser ,  Richard Sawyer ,  Margaret Steinbugler ,  Jung Yi

IPC分类号： H01M8/04 ,  H01M8/00

CPC分类号： H01M8/04029 ,  H01M8/0243 ,  H01M8/0245 ,  H01M8/0258 ,  H01M8/0267 ,  H01M8/0271 ,  H01M8/04089 ,  H01M8/04097 ,  H01M8/04119 ,  H01M8/04156 ,  H01M8/04291 ,  H01M8/1007 ,  H01M2008/1095 ,  H01M2250/10 ,  Y02B90/14

摘要： A fuel cell power plant (10) includes a fuel cell (12) having a membrane electrode assembly (MEA) (16), disposed between an anode support plate (14) and a cathode support plate (18), the anode and/or cathode support plates include a hydrophilic substrate layer (80, 82) having a predetermined pore size. The pressure of the reactant gas streams (22, 24) is greater than the pressure of the coolant stream (26), such that a greater percentage of the pores within the hydrophilic substrate layer contain reactant gas rather than water. Any water that forms on the cathode side of the MEA will migrate through the cathode support plate and away from the MEA. Controlling the pressure also ensures that the coolant water will continually migrate from the coolant stream toward the anode side of the MEA, thereby preventing the membrane from becoming dry. Proper pore size and a pressure differential between coolant and reactants improves the electrical efficiency of the fuel cell.

摘要翻译： 燃料电池发电厂（10）包括具有设置在阳极支撑板（14）和阴极支撑板（18）之间的膜电极组件（MEA）（16））的燃料电池（12），阳极和/或 阴极支撑板包括具有预定孔径的亲水基底层（80,82）。 反应物气体流（22,24）的压力大于冷却剂流（26）的压力，使得亲水基底层内的较大百分比的孔含有反应物气体而不是水。 在MEA的阴极侧形成的任何水将通过阴极支撑板迁移并远离MEA。 控制压力还可确保冷却水从冷却剂流向MEA的阳极侧连续迁移，从而防止膜变干。 冷却剂和反应物之间适当的孔径和压力差提高了燃料电池的电效率。

公开(公告)号：US20050019628A1

公开(公告)日：2005-01-27

申请号：US10624190

申请日：2003-07-22

申请人： Thomas Clark ,  Paul Margiott ,  Albert Grasso ,  Richard Breault ,  Leslie Van Dine ,  Margaret Steinbugler ,  Edward Bludnicki

发明人： Thomas Clark ,  Paul Margiott ,  Albert Grasso ,  Richard Breault ,  Leslie Van Dine ,  Margaret Steinbugler ,  Edward Bludnicki

IPC分类号： H01M8/04 ,  H01M8/06

CPC分类号： H01M8/04225 ,  H01M8/04014 ,  H01M8/04022 ,  H01M8/04029 ,  H01M8/04037 ,  H01M8/04119 ,  H01M8/04141 ,  H01M8/04223 ,  H01M8/04302 ,  H01M8/0606 ,  H01M2250/20 ,  Y02T90/32

摘要： A fuel cell power plant system includes the ability to operate an enthalpy recovery device even under cold conditions. A bypass arrangement allows for selectively bypassing one or more portions of the enthalpy recovery device under selected conditions. In one example, the enthalpy recovery device is completely bypassed under selected temperature conditions to allow the device to freeze and then later to be used under more favorable temperature conditions. In another example, the enthalpy recovery device is selectively bypassed during a system startup operation. One example includes a heater associated with the enthalpy recovery device. Another example includes preheating oxidant supplied to one portion of the enthalpy recovery device.

摘要翻译： 燃料电池发电厂系统包括即使在寒冷条件下操作焓恢复装置的能力。 旁路装置允许在选定的条件下选择性地旁路焓回收装置的一个或多个部分。 在一个实例中，焓回收装置在选定的温度条件下完全旁路，以使装置冷冻，然后稍后在更有利的温度条件下使用。 在另一示例中，在系统启动操作期间有选择地绕过焓恢复装置。 一个示例包括与焓恢复装置相关联的加热器。 另一个实例包括将提供给焓回收装置的一部分的氧化剂预热。