发明名称 |
Method, apparatus and article to test fuel cells |
摘要 |
A fuel cell resistance test system includes a contact head having a plurality of spaced electrical contacts for contacting multiple ones of the fuel cells composing the stack. In one embodiment, a plurality of selectively actuable switches produce a short between respective pairs of adjacent ones of the electrical contacts. A processor opens each of the switches, one at a time in succession, to apply a defined voltage from a voltage source, successively across pairs of adjacent ones of the electrical contacts. A current sensor measures a resulting current and the processor or other computer determines whether a short exists based on the magnitude of the defined voltage and the magnitude of the resulting current. Alternatively, the test system may include a current source and a voltage sensor.
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申请公布号 |
US6798221(B2) |
申请公布日期 |
2004.09.28 |
申请号 |
US20020076857 |
申请日期 |
2002.02.14 |
申请人 |
BALLARD POWER SYSTEMS INC. |
发明人 |
WANG ZHAOYU;JOHNSTON BAILEY ROSS W.;HILL GRAHAM E.;NGUYEN HONG THE |
分类号 |
G01N27/02;G01R27/08;G01R31/08;G01R31/36;H01M8/04;(IPC1-7):G01R27/08 |
主分类号 |
G01N27/02 |
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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