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How to use GPC Packager?

Joao Paulo Bertolini Sehn
Prodigy 150 points
Other Parts Discussed in Thread: BQSTUDIO, GPCCHEM, GPCCEDV, BQ27510EVM

Hello,

According to the SLVA725, I am able to use GPC Packager, which is a TI's bqStudio software utility. I downloaded the latest version of bqStudio but I couldn't find the utility.

Also, the report says "Charge using CC/CV charging to full...". Should I start to log with a totaly discharged battery, or it could have some energy in it?

Thanks in advance!

Joao

  • 0
    Expert 1250 points
    I'm also trying to understand the GPC in bqStudio. The documentation is not very clear......
    Let me know if you have managed. I'm running the bq34z100g1 and still are waiting to understand if the bq34z100g1 must be on the entire time or if I can switch it off. And if I switch it on again will it start from where it switched off? or close ? also not clear in the documentation.

    Thomas can you please help?
  • 0 in reply to Ben Duvenage22
    Prodigy 150 points

    Ben,

    Interesting question. It is applicable for my solution as well.

    We have the bq34z110-G1 in a proprietary hardware. This hardware has a bias current consumption of 40mA. I can't turn the circuit off in order to let the battery relax (my battery is a PbA 18000mAh). Do you think that these 40mA could disturb the equilibrium OCV?

    Dan, I think we can't switch off, since the log must continue in order to generate the correct data (time axis).

    One last question:
    I need to let the system relax for 2 (after charge) and 5 hours (after discharge) or I can let the system relax for more than that?

    I'm sorry about my bad english.

    Thanks!

    Joao

  • 0 in reply to Joao Paulo Bertolini Sehn
    TI__Guru 73830 points
    I was not aware that the GPC Packager could be used for the GPCCHEM tool files. It was developed to package the files for GPCCEDV. You can just zip the two files for GPCCHEM and upload it. You do not have to start charging with a fully discharge pack. Just charge it to full and let it rest. You are going to have problems trying to run the optimization cycle with a 40mA bias current. The cells will not stabilize, but it may work to for a ChemID check. Finally, you need to let the pack rest until the OCVTAKEN flag sets for the optimization cycle. You let it rest for the 2 hours and 5 hours for the ChemID check.
  • 0 in reply to ThomasCosby
    Prodigy 150 points
    Hi Thomas,

    Thanks for answering the questions.

    ti.com/lit/an/slva725/slva725.pdf:
    "An easy recording method utilizes TI's bqStudio software utility called GPC Packager that reads data directly from a TI fuel-gauge."

    They might copied it from this (ti.com/lit/ug/sluub45a/sluub45a.pdf) document and pasted in the slva715. Anyway, it doesn't seem a difficult task to do manually, but if we couldn't do that using GPC Packager, it should not to be written there.

    Ok, so, for the optimization cycle, I'm gonna use the evaluation board, from TI.

    Another question:
    The log data generated from bqStudio is a .log file. How can I convert it to .csv?

    Thanks for helping us.

    Joao
  • 0 in reply to Joao Paulo Bertolini Sehn
    TI__Guru 73830 points

    I open the log file in Excel and save it as a csv format file.

  • 0 in reply to ThomasCosby
    Prodigy 50 points
    Is this still the preferred method? I'm trying to capture a battery discharge cycle in order to find the closest Chem ID match. Do I still need to save the log file from a TI software tool, load it into Excel to create a csv file, then zip the information and submit it back for another TI tool to analyze it? It seems a bit cumbersome and roundabout, so hopefully there have been some updates over the last year and a half.
  • 0 in reply to Jon Jacobson88
    TI__Guru* 76230 points

    yes this is still the preferred method. or  you can use gpcpackager  and bqtudio to gather the data that will be uploaded to gpc.

    thanks

    Onyx

  • 0 in reply to Onyx Ahiakwo
    Prodigy 50 points
    I have the BQ27GDK000EVM with a BQ27510EVM connected and I'm using bqStudio version 1.3.76. Unfortunately, the gpcpackager doesn't show up as an option. Is there a way to enable that feature?

    Thanks,
    Jon
  • 0 in reply to Jon Jacobson88
    TI__Guru* 76230 points
    it isn't available for that device yet. Pls use the manual method for now.
    thanks
    Onyx