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BQ34210-Q1: Profile or Chem Id

Part Number: BQ34210-Q1
Other Parts Discussed in Thread: BQSTUDIO, GPCCEDV, EV2400

Hi Dear Reader(s),

From 

bq34210-Q1 Technical Reference Manual - bq34210_sluube8.pdf.

I have located this,

"2.8.1 Battery Profile Storage and Selection

The fuel gauge supports two predefined CEDV profiles in device ROM that customers can use by sending
the SET_PROFILE_1 or SET_PROFILE_2 command."

I am planning to this battery "Panasonic NCR18650B 3400mAh 4.9A Battery".

Which profile can I use? Where can find information on these profiles?

Also my BQStudio 1.3.86 does not have the option "Update chemistry" under menu "Help".  Am I missing something (steps)?

Thanks,

Kevin

  • Hi Kevin,

    Please use the gpccedv webtool to create the battery profile.

    6 discharge logs will be required, as explained in this documentation: www.ti.com/.../sluub45

    the gpccedv tool may be found here: http://www.ti.com/tool/gpccedv

    Sincerely,
    Bryan Kahler
  • Hi Bryan,

    I understand what you suggested. However there are two profiles built in bqstudio.

    "2.8.1 Battery Profile Storage and Selection

    The fuel gauge supports two predefined CEDV profiles in device ROM that customers can use by sending
    the SET_PROFILE_1 or SET_PROFILE_2 command."

    Profile_1 seems to works for me. And I need more information before I will use gpc tools.

    What are these two default profiles that comes with bqstudio?

    Thanks,
    Kevin
  • Hi Bryan,

    Sorry that I kept telling these profiles that come with bqstudio.

    Actually I meant that these profiles that come with BQ34210-Q1.

    Sorry about this confusion.

    Thanks,
    Kevin
  • Hi Kevin,

    This gauge supports 2 separate CEDV profiles.

    The fuel gauge supports two predefined CEDV profiles in device ROM that customers can use by sending the SET_PROFILE_1 or SET_PROFILE_2 command.

    In situations where the user wants to input a custom CEDV profile, they must use the system controller to set the defaults during system initialization.

    To send these commands, the gauge must be in CONFIG UPDATE mode

    To create a first CEDV profile that matches your battery, please use the gpccedv tool, found here: http://www.ti.com/gpccedv

    If you would like to create a second CEDV profile that matches your battery, please use the gpccedv tool, found here: http://www.ti.com/gpccedv

    Sincerely,
    Bryan Kahler
  • Hi Bryan,

    I am using bqStudio & EVM2400 to get these log files, and upload to Ti later.

    And I have the battery NCR18650B from Panasonic. The data sheet is attached.

    You wrote "The fuel gauge supports two predefined CEDV profiles in device ROM that customers can use by sending the SET_PROFILE_1 or SET_PROFILE_2 command."

    Will any one of these predefined CEDV profiles work for the battery NCR18650B from Panasonicpanasonic_18650b_data_sheet.pdf?

    Thanks,
    Kevin

    panasonic_18650b_data_sheet.pdf

     

  • Hi Bryan,

    The document "Simple Guide to CEDV Data Collection for Gauging Parameter Calculator (GPC)" does not suggest that I need to change parameters before I create the log files.

    So I have

    1) changed "FC"  to 3700 mV .

    2) changed "Design Capacity" to 3200 mAh.

    3) changed "Termination Voltage" to 3300 mV.

    The light pink ball can NOT go up and pass the top. See attached.   Am I missing something?

    Thanks,

    Kevin

    GPC_Screen.docx

  • Hi Kevin,

    The way to tell is to use the GPCEDV tool with your battery and compare the reports constants between the default constants of profile 1 and 2. The default constants of profile 1 and 2 may be found in Table 6-2.

    For initial device bringup, please follow the steps of the Quickstart guide, found here: www.ti.com/.../sluubr7.pdf

    It documents the minimum parameters required for device usage. It also suggests that the GPCCEDV tool used for increased accuracy.

    Section 6.1 covers zero configuration usage, if applicable.

    Sincerely,
    Bryan Kahler
  • Hi Kevin,

    As an addendum,

    SOC and gauging isn't required for generating the GPCCEDV logs. The logs only required IVT Data (current, voltage temperature). The zero configuration usage should be sufficient for IVT log generation.

    Sincerely,
    Bryan Kahler
  • bqStudio_Ver_1.3.86.docxHi Bryan,

    When I used bqStudio version 1.3.86 to gather the logs, on "GPC Cycle" tap, the light pink ball could not pass the top even I have left my setup running overnight. See attached.

    And I did notice that the pink ball moved up on the left side of the slope on "GPC Cycle" tap.

    My setup consists of these components.

    1) Windows running bqStduio 1.3.86.

    2) EV2400 board.

    3) Charger to charge the battery.

    Do you see anything wrong with my setup?

    Thanks,
    Kevin

  • Hi Bryan,

    I just read www.ti.com/.../sluub45b.pdf.

    The below is copied from that document sluub45b.pdf - "Simple Guide to CEDV Data Collection for Gauging Parameter Calculator (GPC)".

    "
    1 Tool Summary
    Gauging Parameter Calculator (GPC) is a math calculation and simulation tool that helps the battery
    designer to obtain matching Compensated End of Discharge Voltage (CEDV) coefficients for the specific
    battery profile. The tool allows the user to increase the accuracy of the fuel gauge IC over temperature.
    The battery pack must use one of TI’s CEDV algorithm-based fuel gauges. It accepts 3 pairs of log files
    that can be created with various user equipment or by using TI’s Battery Management Studio (bqStudio)
    software with a CEDV evaluation board connected through USB.
    "

    Notice it states "It accepts 3 pairs of log files that can be created with various user equipment or by using TI’s Battery Management Studio (bqStudio) software with a CEDV evaluation board connected through USB."

    You wrote above "The logs only required IVT Data (current, voltage, temperature)."

    I can read (current, voltage, temperature) from the un-configured gauge that is populated on our designed boards. So can I submit the log files that are created with my own board and tools, just format to what Ti tools expect?

    Could I use the below format?
    1) Column name: elapsed time, voltage, temperature, current.
    2) Unit of measurement: time counter, millivolt, degree C, miliamps.
    Example, 4, 3720, 19, 22.0

    Could you tell me if I can upload my log files using the mentioned format? Thank you very much!


    Thanks,
    Kevin
  • Hi Kevin,

    Here is an example:

    elapsed time (sec), voltage (mV), current (mA), temperature (C) 20.02833 2975.308 0 28.95893
    30.04369 2974.984 0 28.88429 40.05915 2975.308 0 28.91459 50.09006 2974.984 0 28.73499 60.13664
    2975.308 0 28.74904 70.20198 3008.069 99.9098 28.89834 80.20158 3023.314 99.9098 28.77718
    90.23994 3300.643 1300.396 28.79125 100.2554 3360.975 1300.396 28.79125 110.2708 3404.115
    1300.221 28.58133 120.2859 3439.146 1300.572 28.59754

    Sincerely,
    Bryan Kahler