Patent ID: 7999554
Filing Date: 2011-08-16
Classification: G01R,H01M,H02J,Y02E

Abstract:
1. Voltage translator circuitry for translating a floating cell voltage of at least one of a plurality of battery cells to a ground referenced cell voltage, said voltage translator circuitry comprising: a single operational amplifier comprising: a first circuitry configured to adjust said negative supply voltage in response to Vcell- so that said negative supply voltage is less than Vcell- for each battery cell to be monitored, wherein said first circuitry comprises a first voltage regulating device, a first current source and a first transistor; and a second circuitry configured to adjust said positive supply voltage in response to Vcell- so that said positive supply voltage is greater than Vcell- for each battery cell to be monitored, wherein said second circuitry comprises a second voltage regulating device, a second current source and a second transistor.