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BQ34Z100-G1: Chemical ID Selection

Mahfoud Drouaz
Prodigy 40 points
Part Number: BQ34Z100-G1
Other Parts Discussed in Thread: GPCRB

Hello, 

I performed a log of charge/discharge cycle for an NiMH pack battery to determines the chemestry ID with Gauging Parameter Calculator (GPC).

In the repport file, the identified chimistry is LiCoO2, can this be possible ?

Caracteristics of my pack battery are following:

Voltage : 8400mV

Capacity : 2600mAh

cell number series : 7

 I attached the log data of the cycle

5086.config.txt 
ProcessingType = 2
NumCellSeries = 7
ElapsedTimeColumn=2
VoltageColumn = 3
CurrentColumn = 4
TemperatureColumn = 6
2260.roomtemp_rel_dis_rel.csv

Regards

  • 0
    Prodigy 40 points

    Hi, 

    I send 2 new log files to GPC to get the chem ID of my battery, I get attached repports with differents chems ID.

    I started learning cycle with the chem 6107 wich is from the same manufacturer but with not the same capacity, without succes.

    https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1261445/bq34z100-g1-learned-status-doesn-t-update-after-charge-cycle/4775706#4775706

    Can I send samples of my pack battery to Ti for caracterization ?

    If yes how and how can I do that ?

    Regards

    31082.GPC_report.txt 
    0	0	0
0	0	0
0	0	0
0	0	0
0	0	0
0	0	0
0	0	0
0	0	0
0	0	0
0	0	0
0	0	0
0	0	0
0		
		
Summary of all IDs with max. DOD deviation below 15%		
		
Chem ID	max DOD error, %	Max R deviation, ratio
6117	5.85	0.32
6116	7.37	0.49
643	11.97	0.16
		
Max. deviations for best ID is within recommended range. Chosen best chemical ID is suitable for programming the gauge.		
		
		
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	100
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
    31082.GPC_report.txt 
    0	0	0
0	0	0
0	0	0
0	0	0
0	0	0
0	0	0
0	0	0
0	0	0
0	0	0
0	0	0
0	0	0
0	0	0
0		
		
Summary of all IDs with max. DOD deviation below 15%		
		
Chem ID	max DOD error, %	Max R deviation, ratio
6117	5.85	0.32
6116	7.37	0.49
643	11.97	0.16
		
Max. deviations for best ID is within recommended range. Chosen best chemical ID is suitable for programming the gauge.		
		
		
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	100
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

  • 0 in reply to Mahfoud Drouaz
    TI__Guru 57697 points

    Hello Mahfoud,

    6117 is the best matching chemID and it is NiMH

  • 0 in reply to Shirish
    Prodigy 40 points

    Hi Shirish,

    Last night I did a new log file, I get attached report file, so I will strat new learn cycle with the chem ID 6117.

  • 0 in reply to Mahfoud Drouaz
    Prodigy 40 points

    Hi Shirich, 

    The learn cycle with chem ID doesn't succed. I get learned status = 4

    I performed the cycle as : full discharge - Relax - full Charge - Relax - full discharge and Relax as specified in the technical data.

    I attached the log data if you can help tu understand what happen !

    Using the GPC tool, I did an Optimized Impedance Track Parameters, the GPC returned the Ra table but not gg_out.csv, how can I resolve that ?

    Regards

    24082023_NiMH-report_process_2.zip24082023_NiMH-report_process_3.zip24082023_NiMH_log.zip

    Regards

  • +1 in reply to Mahfoud Drouaz
    TI__Guru 57697 points

    Hello Mahfoud,

    Use the GPCRB tool when using gg.csv

    The discharge must use 90% of battery/design capacity for proper learning.

  • +1 in reply to Shirish
    Prodigy 40 points

    Hi Shirish, 

    Thanks for your help. Indeed I calculated the discharge capacity and it's very low 68.9%

    I get learned status = 6 for the NiMH battery with some changes in the configuration, but with the new configuration I don't get the FC flag and estimated  full charge capacity is very low 453mAh !

    I run a new learn cycle, can you have a look on data ?

    Regards

    8270.20230831_NiMH_2600mAh.zip