Mathcad ChemID help

Diego Martinez Pasini

Other Parts Discussed in Thread: BQ34Z110

I'm using a Vision CP12170X (12V 17Ahr) sealed lead acid battery and I want to know the ChemID.

I've performed the steps explained on "Chemistry ID Selection":

Charge the pack to full and allow it to taper to a C/100 taper current.
Let it rest for at least 2 hours, then discharge it at a C/10 rate to discharge complete.
Let it rest for about 5 hours.

I've logged the dada using BQ34z110EVM and logged using bq34z110 Evaluation Software thru EV2300 board. I've downloaded the 'chemselect_cont_mcd11_rev36.mcd' file and opened on Mathcad but don't know what to do now.

Can anyone provide me some help? Attached is my log file

Regards,

Diego

ChemID_040114.rar

over 10 years ago

0 ThomasCosby over 10 years ago

TI__Guru 73830 points

Diego,We have not characterized that battery and the Mathcad tool did not find an acceptable match to one of our ChemID's. We can characterize your battery and create a ChemID, if desired. Please update you e2e profile or provide an email address and I will send you a message with requirements to run the characterization.

Regards

Tom

0 Diego Martinez Pasini over 10 years ago

Prodigy 70 points

Thomas, I've updated my profile. Nevertheless my email is diemp.87@gmail.com

Regards,

Diego

0 Kris Moernaut over 9 years ago in reply to ThomasCosby

Prodigy 110 points

Thomas,

I have tried to find a matching Chem Id with the Chemtool, but no succes...

I have followed the necessary steps and made a log file using the bq gas gauge evaluation SW in combination with the EV2300.

The battery is a 6cell sealed lead acid battery of 40Ah. I callibrated the current of the bq34z110 scale 1/2.

Could you please check if there is a matching chemical ID for my battery?
(and if it is possible, can you send me the mathcad file so I can see what I did wrong)

Thanks in advance,

Kind regards,
Kris

6607.logging.txt

0 ThomasCosby over 9 years ago in reply to Kris Moernaut

TI__Guru 73830 points

Kris,

The program found ChemID 807 to be the best match. The error was not within the recommended 3% limit, but this may be due to the discharge current. Sometimes PbA cells require a lower discharge rate. (maybe C/20) ChemID 807 should work okay.

Tom

chemselect_cont.zip

0 Kris Moernaut over 9 years ago in reply to ThomasCosby

Prodigy 110 points

Thomas,

Thank you very much

Kris

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Mathcad ChemID help