公开(公告)号：US07125625B2

公开(公告)日：2006-10-24

申请号：US10448974

申请日：2003-05-30

申请人： Alan J. Cisar ,  Craig C. Andrews ,  Charles J. Greenwald ,  Oliver J. Murphy ,  Chris Boyer ,  Rattaya Chow Yalamanchili ,  Carlos E. Salinas

发明人： Alan J. Cisar ,  Craig C. Andrews ,  Charles J. Greenwald ,  Oliver J. Murphy ,  Chris Boyer ,  Rattaya Chow Yalamanchili ,  Carlos E. Salinas

IPC分类号： H01M2/02 ,  H01M2/08 ,  H01M8/12

CPC分类号： H01M8/0206 ,  H01M8/0213 ,  H01M8/0221 ,  H01M8/0223 ,  H01M8/023 ,  H01M8/0232 ,  H01M8/0241 ,  H01M8/0247 ,  H01M8/0256 ,  H01M8/026 ,  H01M8/0271

摘要： A bipolar assembly for use in electrochemical cell stacks, especially stacks operated at low pressure. The bipolar assembly is lightweight and provides a “post-type” flow field that operates with a low pressure drop. The bipolar assembly comprises a gas barrier having an array of electronically conducting posts disposed approximately perpendicular to the gas barrier. Each end of the posts is in electrical communication with the surface of an electrode. Because the bipolar assembly separates a cathode from an anode, the posts contact an anode electrode on one end and a cathode electrode on the other end. The posts provide current conduction through the stack as well as provide the flow fields for the electrochemical reactants. Optionally, the bipolar assembly may contain cooling fluid channels formed by adding additional gas barriers to the bipolar assembly. The space between the gas barriers form a channel through which cooling fluids may be circulated.

公开(公告)号：US07037618B2

公开(公告)日：2006-05-02

申请号：US10446030

申请日：2003-05-27

申请人： Craig C. Andrews ,  Rattaya Chow Yalamanchili ,  Oliver J. Murphy

发明人： Craig C. Andrews ,  Rattaya Chow Yalamanchili ,  Oliver J. Murphy

IPC分类号： H01M8/02 ,  H01M2/02

CPC分类号： H01M8/248 ,  H01M8/0271 ,  H01M8/241 ,  H01M8/2483 ,  H01M2008/1095

摘要： An electrochemical cell comprising a plurality of electrochemical cell components having at least one opening extending therethrough. At least one filament extends through the at least one opening and has two ends with first and second securing members coupled to the two ends. A biasing member is disposed to put the at least one filament in tension between the securing members and to put the plurality of electrochemical cell components in compression. The filament is preferably electronically insulating and preferably does not transmit torsional forces. The filament extends through the at least one opening at least one time and may loop around a securing member any number of times. The filament may have a finite cut length or may form a continuous filament loop.