Correct gas gauge parameters setup

[kaklik]

@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

[roman-dvorak]

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

[roman-dvorak]

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
0	0	0
		
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.