• State Resolved
  • Locked Locked
  • Replies 3 replies
  • Answers 1 answer
  • Subscribers 63 subscribers
  • Views 815 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

Original question:

BQ34Z100-G1 Learning Cycle

BQ34Z100-G1: BQ34Z100-G1 Learning Cycle LiFe

Jerome Villalon
Prodigy 20 points
Part Number: BQ34Z100-G1

Hi,

What is the learning cycle procedure for LiFe Batteries (Multi-Cell)? Where is the documentation for this?

Cheers,

Jerome

  • 0
    TI__Mastermind 25955 points
    Hi Jerome,

    0. Configure dataflash, pack chemistry, perform calibration and export GG File (for later comparison)
    1. Enable IT
    2. Send Reset command (0x0041)
    3. Charge the pack to charge termination.
    4. Rest until the OCVTAKEN flag sets
    5. C/5 Discharge to the termination voltage
    6. Rest until the OCVTAKEN flag sets. At this point, QMax should update and the Update Status should increment to 0x05
    7. Charge the pack to charge termination
    8. Rest until OCVTAKEN flag sets
    9. C/5 Discharge to the termination voltage
    10. Rest until the OCVTAKEN flag sets. At this point, the Ra table should update and Update Status should increment to 0x06

    Collateral specific to the learning cycle of the bq34z100-G1 is currently being revamped. In the interim, please refer to this app note for further information:

    www.ti.com/.../slua777.pdf

    Sincerely,
    Bryan Kahler
  • 0 in reply to Bryan Kahler
    Prodigy 20 points

    Hi Bryan,

    Thanks for those steps. Look forward to the release of the official documentation.

    Regarding the steps: how important are the discharge C-rates (C/5) on Steps 5 and 9? Will they affect the Learning Cycle if it were say C/10?

    Cheers,

    Jerome

  • 0 in reply to Jerome Villalon
    TI__Mastermind 25955 points
    Hi Jerome,

    Yes, varying the C Rates can effect the learning cycle. Please try to be spot on with the rates.

    Sincerely,
    Bryan Kahler