发明名称 |
Method for detecting electrical defects in membrane electrode assemblies |
摘要 |
A method and system for detecting imperfections in a membrane electrode assembly of an electrochemical fuel cell, and more particularly for detecting defects within a proton exchange membrane in a membrane electrode assembly which is optionally sandwiched between conductive diffusion media layers or between conductive diffusion layers with at least one rigid solid that is transparent to infrared radiation. A potential voltage is applied across the membrane and the presence of a defect and preferably the location of a defect is determined by monitoring variations in intensity level of infrared radiation emitted from a surface of the membrane electrode assembly.
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申请公布号 |
US7179553(B2) |
申请公布日期 |
2007.02.20 |
申请号 |
US20020236804 |
申请日期 |
2002.09.06 |
申请人 |
GENERAL MOTORS CORPORATION |
发明人 |
MURPHY MICHAEL W;LITTEER BRIAN A |
分类号 |
H01M8/00;H01M8/02;G01J1/00;G01J5/00;G01M3/04;G01N25/72;G01N27/26;G01R31/00;G01T1/16;H01M;H01M8/04;H01M8/10 |
主分类号 |
H01M8/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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