Variable battery refresh charging cycles
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United States of America Patent
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Aug 4, 2009
Grant Date -
Aug 10, 2006
app pub date -
Feb 9, 2005
filing date -
Feb 9, 2005
priority date (Note) -
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Abstract
A refresh control system that selectively initiates a refresh charge cycle includes an energy storage device and an electric machine that is operable to charge the energy storage device. A control module monitors a usage period of the energy storage device and determines a bias factor. The control module determines a modified usage period threshold based on a usage period threshold and the bias factor. The control module regulates the electric machine to initiate a refresh charge cycle of the energy storage device when the usage period exceeds the modified usage period threshold.
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