公开(公告)号：US06913845B2

公开(公告)日：2005-07-05

申请号：US10282311

申请日：2002-10-28

申请人： Timothy A. Bekkedahl ,  Lawrence J. Bregoli ,  Richard D. Breault ,  Emily A. Dykeman ,  Jeremy P. Meyers ,  Timothy W. Patterson ,  Tommy Skiba ,  Chris Vargas ,  Deliang Yang ,  Jung S. Yi

发明人： Timothy A. Bekkedahl ,  Lawrence J. Bregoli ,  Richard D. Breault ,  Emily A. Dykeman ,  Jeremy P. Meyers ,  Timothy W. Patterson ,  Tommy Skiba ,  Chris Vargas ,  Deliang Yang ,  Jung S. Yi

IPC分类号： H01M4/86 ,  H01M8/04 ,  H01M8/10 ,  H01M8/24

CPC分类号： H01M4/9083 ,  H01M4/926 ,  H01M8/0234 ,  H01M8/0267 ,  H01M8/0271 ,  H01M8/04223 ,  H01M8/04225 ,  H01M8/04228 ,  H01M8/04238 ,  H01M8/1016 ,  H01M8/241 ,  H01M8/2465 ,  H01M8/2483 ,  H01M2008/1095 ,  H01M2300/0091

摘要： Each cell of a fuel cell stack is provided, between the anode 37 and cathodes 38, with either (a) a permanent shunt (20) which may be a discrete resistor (42-44), a diode (95), a strip of compliant carbon cloth (65), or a small amount of conductive carbon black (22) in the ionomer polymer mixture of which the proton exchange membrane (39) is formed, or (b) a removeable shunt such as a conductor (69) which may be rotated into and out of contact with the fuel cell anodes and cathodes, or a conductor (85) which may be urged into contact by means of a shape memory alloy actuator spring (90, 91), which may be heated.

摘要翻译： 在阳极37和阴极38之间提供燃料电池堆的每个电池，具有（a）永久性分流器（20），其可以是分立电阻器（42-44），二极管（95），一条 或其中形成质子交换膜（39）的离聚物聚合物混合物中的少量导电炭黑（22），或（b）诸如导体（69）的可移除分流器 可以与燃料电池阳极和阴极或者可以通过可被加热的形状记忆合金致动器弹簧（90,91）被推动接触的导体（85）旋转进入和脱离接触。

公开(公告)号：US07282285B2

公开(公告)日：2007-10-16

申请号：US10473989

申请日：2002-04-05

申请人： Harold T. Couch ,  Carl A. Reiser ,  Gennady Resnick ,  Deliang Yang ,  Emily A. Dykeman ,  David A. Condit

发明人： Harold T. Couch ,  Carl A. Reiser ,  Gennady Resnick ,  Deliang Yang ,  Emily A. Dykeman ,  David A. Condit

IPC分类号： H01M8/04

CPC分类号： H01M8/04253 ,  H01M8/0267 ,  H01M8/04029 ,  H01M8/04303 ,  H01M8/2457 ,  H01M8/2465

摘要： A cell stack assembly (102) coolant system comprises a coolant exhaust conduit (110) in fluid communication with a coolant exhaust manifold (108) and a coolant pump (112). A coolant inlet conduit (120) enables transportation of the coolant to the coolant inlet manifold. The coolant system further includes a bypass conduit (132) in fluid communication with the coolant exhaust manifold and the coolant inlet manifold, while a bleed valve (130) is in fluid communication with the coolant exhaust conduit and a source of gas. Operation of the bleed valve enables venting of the coolant from the coolant channels, and through a shut down conduit (124). An increased pressure differential between the coolant and reactant gases forces water out of the pores in the electrode substrates (107,109). An ejector (250) prevents air form inhibiting the pump. Pulsed air is blown (238,239,243,245) through the coolant channels to remove more water.

摘要翻译： 电池堆组件（102）冷却剂系统包括与冷却剂排气歧管（108）和冷却剂泵（112）流体连通的冷却剂排放导管（110）。 冷却剂入口管道（120）能够将冷却剂输送到冷却剂入口歧管。 冷却剂系统还包括与冷却剂排出歧管和冷却剂入口歧管流体连通的旁通管道（132），而排放阀（130）与冷却剂排放管道和气体源流体连通。 泄放阀的操作使冷却剂从冷却剂通道排出，并通过关闭导管（124）。 冷却剂和反应气体之间的增加的压差迫使水从电极基板（107,109）中的孔隙中流出。 喷射器（250）防止空气形式阻止泵。 脉冲空气通过冷却剂通道吹出（238,239,243,245）以除去更多的水。

公开(公告)号：US06835480B2

公开(公告)日：2004-12-28

申请号：US10331570

申请日：2002-12-30

申请人： Emily A. Dykeman ,  Patrick L. Hagans ,  Leslie L. Van Dine

发明人： Emily A. Dykeman ,  Patrick L. Hagans ,  Leslie L. Van Dine

IPC分类号： H01M804

CPC分类号： H01M8/04119 ,  H01M8/04029 ,  H01M8/04223 ,  H01M8/04228 ,  H01M8/04291 ,  H01M8/241 ,  H01M8/2483

摘要： The invention is a method of using a temporary dilute surfactant water solution to enhance mass transport in a fuel cell (10) that generates electrical current from hydrogen containing reducing fluid and oxygen containing oxidant reactant streams. The method includes the steps of: a. directing the dilute surfactant water solution to flow through a cathode flow field (20) of a fuel cell (10); b. then removing the solution from the fuel cell (10); and, c. then directing flow of the reactant streams through the flow fields (12) (20). The temporary dilute surfactant water solution has a surface tension of not less than 50 dynes/cm. Flowing the temporary dilute surfactant water solution through the fuel cell (10) for a temporary, short duration improves mass transport of the cell (10) even after the solution is removed from the cell (10).