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Active cell balance for LiPo battery

Anton Kosenko
Intellectual 490 points
Other Parts Discussed in Thread: BQ78350-R1, BQ76930, BQ76200, BQ34Z100-G1

I would like to design BMS that control and monitor 7S LiPO battery (24Ah, about 28V (~4V each sell), discharge current - 50A). 

This BMS must have active balancing circuit.

And it is desirable to work at standalone mode, without connection with microcontroller.

I would like to know, which TI chip (or chips) is suitable for this task.

  • 0
    TI__Mastermind 25955 points
    Hi Anton,

    For a device able to work in standalone mode without a connection to the microcontroller, please look into the:

    If CEDV is the preferred gauging method, please look into the
    1) bq78350-R1 and bq76930 with low side FETS
    2) bq78350-R1 and bq76930 and bq76200 with high side n-channel FETS

    If Impedance Track (IT) is your preferred gauging method, please look into the
    1) bq34z100-G1 and bq78350-R1 and bq76930 with low side FETS
    2) bq34z100-G1 and bq78350-R1 and bq76930 and bq76200 with high side n-channel FETS

    If you could provide some more information about your application, we can discuss how these devices and other devices in our catalog may best suit your application.

    Sincerely,
    Bryan Kahler