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BQ2060A with 36V battery?

Laurent Cattoir
Prodigy 10 points
Other Parts Discussed in Thread: BQ2060A

Hello,

Is it possible to use the BQ2060A for tracking the State Of Charge value of a 36V LiMnO2 battery, or is the 36V pack voltage too high for this chip?

In case of the latter, could a voltage divider - that scales the 36V to a value that is acceptable for the BQ2060A - be a solution here? The SOC value will be read from the fuel-gause chip by a CPU, so subsequent compensation of this SOC - because of the voltage divider - is possible here. 

Individual cell-voltage measurement is not required here - as this is a multi-cell battery (> 4 cells). 

Any help is appreciated

  • 0
    Genius 3970 points

    At first glance, I wouldn't quite recommend the bq2060A for your application. It could possibly work but it generally requires connections to intermediate cell taps (for a typical 2-4 cell Li-Ion application) and the voltage would be too high without scaling with a resistor divider which has its own design challenges. Is there a particular reason that you want to go with the bq2060A (pre-existing stock or a requirement of using the SBS [Smart Battery System] standard perhaps)? If it's the latter, there are other gauges available that may be better suited for your application.