BQ20Z45-R1: Creating a GG File And Under-Charging

David Jervis58

Part Number: BQ20Z45-R1

I am trying to under-charge a lithium battery to purposely decrease its capacity. I cannot seem to get the TI part to learn the capacity, gas gauge, display the correct RSOC, etc. Can someone over at TI take a look at my file and give me some pointers?

over 8 years ago

0 TEC over 8 years ago

Expert 2475 points

I do not see the gg file attached to the e2e thread. Have you verified that you have a good ChemID match to your cells and completed the optimization cycle? These items are critical to accurate gauging.

0 David Jervis58 over 8 years ago in reply to TEC

Intellectual 655 points

Yes, we took a battery that we had in production and reduced the charging voltage using the same configurations, etc. Update status was equal to "E." Could I send it via email? I do not want to share it publicly.

0 dMax over 8 years ago in reply to David Jervis58

TI__Genius 14985 points

Which dataflash parameters did you specifically change?

Did you send a RESET command after changing them to make sure they get copied from DF to RAM in case it was necessary for some of them?

0 David Jervis58 over 8 years ago in reply to dMax

Intellectual 655 points

I changed the charging voltages, nominal voltage, and capacity of the battery.

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BQ20Z45-R1: Creating a GG File And Under-Charging