Battery capacity estimation by DCIR
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United States of America Patent
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Jul 9, 2013
Grant Date -
Feb 17, 2011
app pub date -
Aug 10, 2010
filing date -
Aug 13, 2009
priority date (Note) -
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Abstract
A method of battery capacity measurement is actualized by battery internal resistance. This method establishes a controlled discharge path inside the battery module. The battery discharge current is a constant value despite of the variation of system loading current. The internal resistance measured by establishing this constant battery current can be used to obtain the battery capacity precisely.
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