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BQ27426EVM-738: BQ27426

Prodigy 90 points

Replies: 2

Views: 328

Part Number: BQ27426EVM-738

Hi everyone,

Recently,  I use the charger bq24192EVM and gauge bq27426EVM to do some test on the mobile phone lithium-ion battery.

then i arrange the test data and upload them to http://www.ti.com/tool/GPCCHEM?keyMatch=gpc&tisearch=Search-EN-Everything for chemical ID.

Finally, I get my battery Chemical ID 3945, then I choose the chemical ID in Bqstudio software, and I get the default data memory and save it.

After that I do the test again for data memory updating, and save the updated data memory too. However, when i analysis the Ra table in the data memory, I meet a problem.

The distribution of the updated Ra table is OK, but I find that the default Ra table is very strange for Ra getting  the highest value when SOC is 100%,  It is not common practice.

I want to know why the default Ra table has this  unreasonable phenomenon, or the default Ra table is only generated randomly?

Thanks for reply!

Xuehao 

2 Replies

  • Hi Xueha,

    Can you share the gg file showing the Ra table with with Ra0 having the highest value? Can you confirm it is Ra0_0 and not Ra0_14 because at empty (0%) that is what corresponds to Ra_014 which is the highest value. At empty the resistance of the battery is greatest.

    thanks
    Onyx
  • In reply to Onyx Ahiakwo:

    Hi, Onyx

    My gg file have sent to your email box, Thanks for your time.


    Xuehao

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