Method and system to ensure full functionality of battery pack assembly using thermal imaging
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United States of America Patent
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Oct 8, 2002
Grant Date -
N/A
app pub date -
Jan 18, 2002
filing date -
Jan 18, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention is a method and system to efficiently ensure functionality of a battery pack during assembly using thermal imaging. After individual battery modules are combined into sections, such as for a high voltage battery pack to power a traction motor for an electric vehicle, a power discharge test using thermal imaging is conducted on each section before combined to form the battery pack. This can determine whether any connections are loose or faulty based on the additional heat generated and detected at the site and allow them to be fixed during assembly. Further tests can include a comparison of voltage among the battery pack and each battery section and a means to adjust any battery pack that exceeds a predetermined voltage variation. The thermal image scan can obtain thermal radiation variation using infrared intensity data that can be digitized, processed, assigned color values, put on a visual display and recorded.
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