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BQ35100: Characterisation for LiSOCl2 battery

Jeremy Herbert
Prodigy 140 points
Part Number: BQ35100
Other Parts Discussed in Thread: GPCCHEM

Hi,

I am interested in evaluating the BQ35100 with the Fanso ER26500M, which is a spiral type LiSOCl2 cell. From what I can see, this is not available in the latest battery management studio, and I am unsure if I can use the existing chemistries as they seem to be mostly related to bobbin type cells. Is it possible for me to request these be added to the chem ID database, or is there some way I can characterise them myself? I can supply samples if necessary.

Thanks,

Jeremy

  • 0
    TI__Guru 57697 points

    Hello Jeremy,

    I would first use the GPCCHEM tool to find out if any of the existing chemistry IDs are a good match,

    For the BQ35100 the exact cell chemistry should be used, you cannot use GPCCHEM. in EOS mode with LTC battery chemistry the chem ID may not be used if only using the EOS alert functionality, so the chem ID does not matter for this case. If you are trying to get SOH % data in EOS mode you will need to either use the exact chem ID match, or create your own Ra table following the app note: https://www.ti.com/lit/pdf/sluaal7

    As stated in the TRM the SOH % data in EOS mode may not be very accurate and should be evaluated first.