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BQ34110: bq34110

Part Number: BQ34110

Hello.

I have some questions about bq34110.

1. Which pin is the voltage measured by the Voltage () register? Is it the voltage measured between the BAT pin and the SRN pin?

2. What is the current value of high rate when measuring CEDV data? Is it the maximum value in the actual machine or the current value of 1C?

3. What is the current value of lowhrate when measuring CEDV data? Is it the minimum value in the actual machine or the current value of 0.1C?

4. Is it okay to think that FitMaxSOC%, FitMinSOC%, and LearnSOC% of "Configuration File" sent at the same time as CEDV data are around the following?

 Should these three be below the knee?

5. Is SOC changing rapidly? At low temperatures, SOC changes rapidly from 24% to 7%.

Thank you.

  • Hello Kentaro,

    The gauge measures between the VSS or SRN, depends on the GNDSEL setting.

    Please check the documents for the high load definition, it should be the average high current value, not the peak: https://www.ti.com/lit/sluub45

    Yes the filter min and filter max should have the learn SOC value between them and it should be in the knee of the discharge like you show in the image.

    CEDV only has limited temperature corrections based on the CEDV parameters. Can you share a bqStduio log of the data so we can check, along with your .gg file with configuration information.

    Sincerely,

    Wyatt Keller

  • Hello.

    Thank you for your reply.