Individual cell voltage detection circuit for charge and discharge control in a battery pack
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United States of America Patent
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Sep 23, 2014
Grant Date -
Dec 20, 2012
app pub date -
Jun 16, 2011
filing date -
Jun 16, 2011
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Abstract
A battery management system for a battery pack comprises a battery module and a controller. The controller comprises a voltage detection and control circuit, wherein the controller comprises a voltage to current converter. A cell voltage is converted to current and produces a voltage detected at an input to one or more logic devices. The level of voltage detected is dependent upon the current output of the voltage to current converter and a threshold current. The output of the one or more logic devices is received by a controller, and the controller is operable to control the charging and discharging of the battery cell based on the logic device output.
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