Method and System to Measure Series-Connected Cell Voltages Using a Flying Capacitor
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United States of America Patent
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Issued Date -
Mar 8, 2012
app pub date -
Nov 15, 2011
filing date -
Jan 7, 2007
priority date (Note) -
Abandoned
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Abstract
A method and system for measuring voltage of individual cells connected in series includes a pair of busses connectable to the cells and a flying capacitor connectable to the busses. The capacitor stores the charge of one of the cells such that an analog-to-digital converter (ADC) connected to the capacitor may process an accurate representation of the voltage of the cell being measured. In order to prevent electrical interference with the capacitor and the ADC, the charge on the busses is reduced prior to measurement by the ADC
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