BQ34Z100-G1: Learning cycle transfer from eval board to product doesn't work

Hi Gabriel,

Is IT enabled?

Please attach the .gg and a log showing the issue.

Thanks,

Hi Nick,

The IT enable command hasn't been executed on our product. Should it ?

The Learning status is 0x6, so ITEN=1 which means it should be enabled.

Here is a log:

Vbat: 3995 mV, I: -9 mA, estimated: 0 %
Remaining 0 mAh, Full 0 mAh

Please find the .gg.csv enclosed.

Thank you for your help,

2870.test.gg.csv

Hi Gabriel,

This is not enough info to go off, we need a full log showing this issue. I have attached an example log. 

bq34z100_example_log.csv

Thanks,

Hello Nick,

My bad, I haven't guessed you were talking about this file.

So I was sure to have it saved but I can't get a hand on it. I am going to start a new learning cycle to provide you this file with the new gg.csv.

Here things that I know about the last learning cycle:

- I've done it after a first learning cycke, thinking it had failed because it wasn't working on our product

- The first learning cycle was actually successful and the eval board was correctly evaluating the % of charge during charge and discharge

So I am quite confident it worked on the eval board but something is failing when what has been learnt is transfered to our product.

Thanks for your help

Best regards

Hello Nick,

I've found the log file. Here it is:

It starts after issuing IT_ENABLE and starting charge, with learning status=0x04, VOK=H, RUP_DIS=L beforehand.

Best regards,

bq34z-log-learning-cycle.zip

Hi Gabriel,

You need to redo the learning cycle on the final product in this case, learning status=0x04 means it is incomplete.

Best regards,

Hello Nick,

"It starts after issuing IT_ENABLE and starting charge, with learning status=0x04, VOK=H, RUP_DIS=L beforehand."

I am giving you the information of the state in which the gauge was at the first line of the log file.

In the log file I've provided you, you can see that it ends with learning status=0x06.

Doing the learning cycle on the final product instead of the eval board could indeed be a good idea.

Best regards

Gabriel Lucas

Hi Gabriel,

Thanks for clarifying, but we can't say much about the problem you are seeing from this learning cycle log. Can you upload a log showing the issues you are seeing after transferring to product? It may be best to rerun the learning cycle in this case.

Best regards,