BQ4050: How to configure for CEDV test

Jonas Zhang

Part Number: BQ4050

customer has a group of polymer cells using BQ4050 for CEDV test, the recorded data shows that the error is too large, how to configure or debug?

Below picture and attachment is customer test data.

over 2 years ago

0 Jonas Zhang over 2 years ago

Prodigy 190 points

Add attchment for your reference

C369-P1.zip 2480.C369-P1-22.zip C369-P1-22-report.zip C369-P1-report.zip

0 Wyatt Keller over 2 years ago in reply to Jonas Zhang

TI__Guru** 105760 points

Hello Jonas,

It looks like the the logs which have the highest error are due to the voltage not going into the "knee" of the discharge, the further up you go on the voltage curve for your term V setting the higher the error will be in most cases since the voltage resolution for each SOC% is much smaller outside of the voltage knee.

Sincerely,

Wyatt Keller

Power management

Power management forum

BQ4050: How to configure for CEDV test