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BMS for lead acid battery

Other Parts Discussed in Thread: BQ34Z100-G1

Hi,

i am looking for battery management system for lead acid battery. so please suggest me some  ICs & our requirements are as below. 

1)IC should monitor Battery pack voltage .

2)under voltage and over voltage protection.

3)short circuit protection ,over current protection and etc.

4)cell balancing/pack balancing.

kindly clarify my below querie. 

1)cell balancing is possible in lead acid battery?

  • Hi Rajaneesh,
    bq34z100-G1 can be used to monitor the voltage. Protection and balancing is typically not necessary for lead-acid batteries. Those are generally used for lithium-ion packs.
  • Hi Dmax,

    Please clear below queries on bq34z100-G1

    1)bq34z100-G1 can monitor under voltage, over voltage ,each cell voltage,pack current of lead acid battery?

    2)Cell balancing is possible for lead acid  battery?

    3)Do i need to use bq77908 or bq77910 cell balancing? if yes,bq77908/bq77910 ic is not supported for lead acid battery. in the datasheet it mentioned cell balancing for Li-Ion and Li-Polymer battery packs.

    4)bq34z100-G1 can monitor each cell voltage of lead acid  battery?

    5)Do you have any alternate part for lead acid BMS?it should be match to our requirements.

  • Hi Rajaneesh,
    You do not require cell balancing for lead-acid batteries. The bq34z100-G1 can NOT measure individual cell voltages. It has only one voltage measurement input and it is used to measure the entire pack voltage typically. You do not necessarily need any other ICs for a lead-acid BMS.