Open kaklik opened 1 year ago
Soubor, který naměřil @kakl je needostatečný. TI vyžaduje více souborů (viz odpověď v emailu). Je tedy potřeba více prozkoumat jejich potřeby:
Naměřená data vypadají takto:
Naměřené CSV: lto.log
Po převedení logu do správného formátu a doplnění o metadata přišel takovýto report:
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Summary of all IDs with max. DOD deviation below 3%
Chem ID max DOD error, % Max R deviation, ratio
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Warning: Deviation is above recommended level. New chem ID needs to be released for this cell. Please contact your TI representative to send the cell to Dallas for characterization
Selection of best generic ID for ROM based devices like bq274xx
Device / Family #1
Generic Chem ID Device/ Voltage/ Chemistry max DOD error, %
312 bq27421-G1B: 4.3V LiCoO2 200
354 bq27411-G1C: 4.35V LiCoO2 200
3142 bq27421-G1D: 4.4V LiCoO2 200
128 bq27421-G1A: 4.2V LiCoO2 200
Best generic ID 312
Warning: Generic ID Deviation is so high that it is most likely due to anomaly in the data. Please check that data files have recomended format, units and test schedule
Device / Family #2
Generic Chem ID Device/ Voltage/ Chemistry max DOD error, %
1210 bq27621: (ALT_CHEM1) 4.3V LiCoO2 200
354 bq27621: (ALT_CHEM2) 4.35V LiCoO2 200
1202 bq27621: (default) 4.2V LiCoO2 200
Best generic ID 1210
Warning: Generic ID Deviation is so high that it is most likely due to anomaly in the data. Please check that data files have recomended format, units and test schedule
Device / Family #3
Generic Chem ID Device/ Voltage/ Chemistry max DOD error, %
3230 bq27426: (default) 4.35V LiCoO2 100
3142 bq27426: (ALT-CHEM2) 4.4V LiCoO2 200
1202 bq27426: (ALT_CHEM1) 4.2V LiCoO2 200
Best generic ID 3230
Warning: Generic ID Deviation is so high that it is most likely due to anomaly in the data. Please check that data files have recomended format, units and test schedule
Warning: First OCVpoint has non-zero current I= -0.01 Please make sure you have a 2 hr relaxation period before the beginning of discharge.
Warning: Last OCVpoint has non-zero current I= -0.016 Please make sure you have a 5 hr relaxation period after the end of discharge.
Warning: Discharge rate is too high. High rate reduces ID detection accuracy 10 hr rate is recomeended. Total discharge time is less than 5 hrs t_hrs= 3.64923638888889
Zaslaná data jsou: lto.zip Report: lto-report.zip
Rozpoznání chemie tedy není moc úspěšné. Nebylo dodrženo několik požadavků na zdrojová data. Třeba vysoká rychlost vybíjení nebo krátké ustálení napětí na konci měření.
@kakl našel postup, jak ziskat chemistry ID pro guage https://www.ti.com/lit/an/slva725a/slva725a.pdf chce to tu nasi nabijecku, zmerit jeden vybijeci a jeden nabijeci cyklus, to se zazipuje a uploadne na TI web a do hodiny by melo prijit chemistry ID Tady je postup: https://www.ti.com/tool/GPCCHEM#description