BQ27320: changing battery pack to new one -2

K.Yaita

Part Number: BQ27320

Hi Team,

https://e2e.ti.com/support/power_management/battery_management/f/180/t/656641?tisearch=e2e-quicksearch&keymatch=bq27320

Regarding to E2E post above, I got the following comment.
>if changing from a degraded battery to a brand new one, then yes you have to program the golden file.

Could you tell me what is concern if don't program the golden file when changing from a degraded battery to a brand new one?
The background of the question is it is difficult to program the golden file for my customer in their replacement situation.

Best Regards,
Yaita / Japan disty

over 7 years ago

0 Onyx Ahiakwo over 7 years ago

TI__Guru* 76230 points

Hello Yaita,
If you do not program a new golden file, the learned and updated parameters of the old battery would be used and that would lead to serious accuracy issues.

thanks
Onyx

0 K.Yaita over 7 years ago in reply to Onyx Ahiakwo

Guru 29720 points

Hi Onyx-san,

Thank you always for your kind support.

Regarding accuracy issue, SOC has a large error immediately after changing to brand new battery.
However it improves by degrees with application usage of charge/discharge cycles.
Is my understanding correct?

Best Regards,
Yaita

0 Onyx Ahiakwo over 7 years ago in reply to K.Yaita

TI__Guru* 76230 points

yes.

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BQ27320: changing battery pack to new one -2