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BQ34Z100-G1: BQ34Z100-G1 Learning Cycle Finaly Operation

Faruk Sözüer
Intellectual 600 points
Part Number: BQ34Z100-G1
Other Parts Discussed in Thread: BQSTUDIO

Hi everyone;

With the BQ34Z100-G1, the tests go well. Those made;

1) IT_enable is active. Then VOK and QEN is set. It was charged with C/3 full charge with an empty and relax battery. Then wait 2 hours. As result UPDATE_STATUS is 1, Omax Cell 0 update and Max Error is %3. 

2) I started to discharge at C/5.. VOK is set.  I waited 5 hours after the battery was completely drained. Then Ra Table updated. Qmax Cell 0 updated. Max Error %1 Leraned Status 2. 

What should I do after this? When can I get a Golden Image file?

I have worked with this document. 

http://www.ti.com/lit/an/slua597/slua597.pdf 

Sincerely,
Faruk Sözüer

  • 0
    TI__Mastermind 25955 points
    Hi Faruk,

    I'm glad to see your FC bit has set!

    Could you please share more about your configuration? What cell chemistry are you using? The Learning cycle rest times change if using LFP instead of Lithium-Ion. For example, after fully charging a LFP cell, please allow the cell to rest for at least 5 hours to become relaxed before discharging.

    Once you have successfully 'learned' the pack, please follow the guidelines in this document for creating the 'golden image' for production: www.ti.com/.../slua665

    Please note: this document is currently being revised to use terms that align with the newer bqStudio. EVSW will not work with the bq34z100-G1.

    Sincerely,
    Bryan Kahler
  • 0 in reply to Bryan Kahler
    Intellectual 600 points

    Hi Bryan;

    Thank you for reply.

    My used cell of ChemID 1580. Cell name is NCR18650GA.  a battery of 6S7P was obtained using this battery.  Design Capacity and Design energy change in this case.

    In addition, the CHEMID list you are publishing is given as qmax = 3567 for this ChemID value.  --> Chemistry Version 643 in Chemdat.txt file.

    The starting Qmax value is 35635677x7=24969(Qmax value x parallel cells). Is this true? --> slua450 page 5 paragraph 4.

    Sincelery

    Faruk Sözüer

  • 0 in reply to Faruk Sözüer
    TI__Mastermind 25955 points
    Hi Faruk,

    These values will update with a learning cycle. Please perform a learning cycle after loading the chemID and configuring your gauge.

    In your case, the design capacity = (Capacity in mAh of one of your cells) * 7

    and the design energy = design capacity * (nominal voltage of one of your cells in mV)

    Sincerely,
    Bryan Kahler