Other Parts Discussed in Thread: GPCCEDV
Hi,
I have problems to enable the EDV Compensation. The SOC is always 0% when reaching 3.000V cell voltage or even at higher cell voltages no matter whats the current() or temp(). The SOC curve looks smooth without major steps at 7% or 3%. I expect to get a way lower EDV0 at high loads. But as I sad EDV0 is fixed at around 3.000V cell voltage.I did the GPC to get proper CEDV coefficients for my specific battery (8S1P LG HE4) and wrote them to flash.
Can you please help me, Iam struggling at this point.
My settings are:
EDV_CMP = 1
FIXED_EDV0 = 0
Overload Current = 15000
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GPC report:
GPC CEDV tool, rev=46
Configuration used in present fit
NumCellSeries=8
CellTermV=3000
ChemType=1
VoltageColumn=1
CurrentColumn=2
TemperatureColumn=3
ElapsedTimeColumn=0
FitMaxSOC%=12
FitMinSOC%=6
LearnSOC%=7
CEDV parameters resulting from the fit. If EDVV bit is set to 1, EMF and EDVR0 have to be multiplied by the number of serial cells when written to data flash
EMF 3402
EDVC0 119
EDVC1 0
EDVR1 5310
EDVR0 81
EDVT0 4271
EDVTC 9
VOC75 31560
VOC50 30504
VOC25 30032
Recommended SOC deviation tolerance at EDV2 point is < 5% for low temperature and <3% for room and high temperature
Deviations for this set of parameters are given below for each file
file SOC error, % pass
roomtemp_lowrate.csv 0.864998615487933 1
roomtemp_highrate.csv -0.805692068228198 1
hightemp_lowrate.csv 0.895352440340418 1
hightemp_highrate.csv 0.0979537123601064 1
lowtemp_lowrate.csv 0.319746963331598 1
lowtemp_highrate.csv -0.938058020297276 1
Deviations are within recomended range. CEDV parameters are suitable for programming the gauge
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Discharge at room temp, high rate:
Discharge at room temp, low rate
