Tool/software:
Hello,
I have a question regarding the BQ35100 and its End-Of-Service (EOS) detection.
I'm planning to use a Lithium-thionyl Chloride battery, specifically the ER34615SEVE, and I aim to detect when the battery is approaching its end of service using the BQ35100.
To test the actual capacity of the battery, I conducted an experiment where I connected a constant load (165 ohms) to the battery and recorded the voltage and current every 5 minutes.
Using this data, I'm trying to replicate what the BQ35100 does and estimate how far in advance the EOS flag will be triggered. However, to do this, I need to understand how the impedance is calculated and whether the "previous impedance" in the Trend Average formula refers to the last measured impedance or the previous trend average.
I calculated the impedance using the formula:
(Initial Battery Voltage - Actual Voltage) / Actual Current.
Then, I applied the Trend Average formula using the previous impedance, but in my results, the EOS flag is not being triggered.
Any guidance on this would be greatly appreciated.
Thank you in advance!
