System and method to measure series-connected cell voltages and verify measurement accuracy
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United States of America Patent
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Apr 24, 2012
Grant Date -
Jul 10, 2008
app pub date -
Jan 7, 2008
filing date -
Jan 7, 2007
priority date (Note) -
Expired
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Abstract
A system and method for measuring voltage of individual cells connected in series includes a single flying capacitor. The capacitor stores the charge of one of the cells such that a primary analog-to-digital converter (ADC) connected to the capacitor may process a representation of the voltage of the cell being measured. A secondary ADC is connected directly to the cell being measured. The measurements of the primary and secondary ADCs are then compared to verify the accuracy of the flying capacitor.
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