Other Parts Discussed in Thread: GPCCEDV,
Hi
I have a query need your help.
The CEDV parameters are calculated by the GPCCEDV tool. The FCC can update normal at the room temp. but can not update at the 0℃ 0.5C discharge.
Attached the log data and gg file.
Why the FCC not update at 0℃.
4050_CEDV_LFP18650_0D_0.5C_CMP=1 (1).log
5224.GPC_CEDV.txt
GPC CEDV tool, rev=60 Configuration used in present fit ProcessingType=1 NumCellSeries=1 CellTermV=2500 ChemType=4 ElapsedTimeColumn=0 VoltageColumn=1 CurrentColumn=2 TemperatureColumn=3 FitMaxSOC%=8 FitMinSOC%=2 LearnSOC%=3 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 3444 EDVC0 440 EDVC1 0 EDVR1 135 EDVR0 2909 EDVT0 5387 EDVTC 11 VOC75 3317 VOC50 3291 VOC25 3240 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 -0.266374776273926 1 roomtemp_highrate.csv 0.468102127373709 1 hightemp_lowrate.csv -0.352387873254699 1 hightemp_highrate.csv 0.401895401514476 1 lowtemp_lowrate.csv 1.64879727097567 1 lowtemp_highrate.csv -0.551277065952978 1 Deviations are within recomended range. CEDV parameters are suitable for programming the gauge
Waiting for your reply.
Thanks
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