Coulomb counter/ fuel gauge for lithium thionyl chloride cells

user4376413

Other Parts Discussed in Thread: BQ2052, BQ35100

Can the BQ2052 evaluation module be used with lithium thionyl chloride cells? Does TI offer fuel gauge ICs or evaluation kits specifically for this chemistry?

I cannot use the ADC to indicate to the user that the battery has reached its end of life because of the flat discharge curve of the lithium thionyl chloride chemistry. Request your inputs and suggestions.

over 9 years ago

0 ThomasCosby over 9 years ago

TI__Guru 73830 points

Yes, the bq2052 will still be our best option to gauge LiSOCl2 cells.

0 user4376413 over 9 years ago in reply to ThomasCosby

Prodigy 180 points

Thanks very much. Just 2 quick questions

The user's guide for the BQ2052 evaluation module says that the discharge efficiency settings can only be set for LiSO2 and LiMnO2 chemistries. So in the case where I am using LiSOCl2, what should I be doing?

The LiSOCl2 cell that I am using ( LS17500) has a capacity of 3.4Ah at 3.6V . The option to program the full capacity of the battery in the BQ2052 evaluation module does not allow me to set it to this value. The allowed full capacity values are 5Ah, 7.2Ah, 12Ah. So what do I do in this case?

0 Axel Lavroche over 8 years ago in reply to user4376413

Prodigy 130 points

Hello,

I know that it's old but i've the same question that be never answered...

Thanks to explain me how to proceed.

Best regards

0 Onyx Ahiakwo over 8 years ago in reply to Axel Lavroche

TI__Guru* 76230 points

Hi Axel,

hte bq2052 is old and NRND. Pls we have a newer bq35100 particularly suited for Li thionyl chloride and LiMnO2 batteries. If you aren't far out into your design, i would recommend using this.

thanks

Onyx

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Coulomb counter/ fuel gauge for lithium thionyl chloride cells