Other Parts Discussed in Thread: BQ35100
Hi people.
Currently, I am evaluating BQ35100 level of uncertainty to determine the level of gauging uncertainty. At this moment, I am evaluating the EOS mode, and I have performed already a test using a "used" battery, just to determine if the EOS warning is given and to determine how precise is the SOH measurement. I know in the EOS mode, there are two algorithms running: One that determines the SOH based on the measured impedances, and another is the EOS, which uses two moving averages (short and long term) and based on that, determines when the battery is about to be empty.
This is my procedure:
1) By connecting the 2 batteries in series (Saft LS 14500, 3.6V, 2,6A-h), the GE is on.
2) Send the command Start()
3) Wait 5s and then connect a load (90mA), then wait 1hour 20 min
4)Disconnect the load, then send the Stop() command
5) wait until GE DONE is rise and observe the resulting calculated values
At this moment I have set the following:
I am leaving 2 hours of relaxation to the battery and discharging it for 1hour and 20 min (to try to train as much as possible)
I have set 20 cycles for EOS pulse count detection thrshld
I have set the SOH Delta max to 1%
I am tracking the results based on a calculated consumed capacity vs the SOH measured by the device.
Can you tell if this is the correct way to test the uncertainty level of the fuel gauge for the EOS mode (SOH and EOS)?
Which other elements should I consider to obtain a better result?