BQ40Z50: R3

Part Number: BQ40Z50

Tool/software:

Hi Sir,

Subject: OC Safety bit is set automatically when battery reaches 100%.

We use DMEGC 32E Li Ion cell in a 3S7P Battery configuration and have completed the learning cycles with below parameters.

Design capacity 22400 mAh

Design energy 24864 cWh

CHG & DSG current Threshold at 300 mA

Quit current at 250 mA

Charge Term taper current at 500 mA

After completing battery learning cycles successfully we had enabled protections in Data memory as per requirement and started testing the battery.

Charger : 12.6V / 5A

The Protections enabled in Data memory > Settings, Please refer to the document & images below

Protections enabled in settings.pdf

We have studied Bq40z50-R3 TRM but still we are unable to solve the problem. I request you to help us out in finding a solution not trigger OC safety alert()/ Safety status() when the battery reaches 100% and also the necessary settings or parameter values required to configure in data memory. 

I will be eagerly waiting for your response.

Thank you.