Hello,
I'm using the BQ34Z100 with a 4S1P Battery Pack (2,6Ah / 8-13,2V / 1-30A).
There were no problems with the calibration cycle and the golden image file.
But afterwards at the tests I noticed some strange behavior.
Often the state-of-charge changed its value over night from circa 15% to circa 7% (and backwards) without any load.
Also the state-of-charge wasn’t stable. So it varied highly in the range between 5% and 25%.
Is this a normal behavior of this sensor? Maybe the flash settings are not correct. (see attached config file)
Thanks for help.
[Header] bq EVSW Version = 0.9.90 DeviceName = bq34z100R1 v0.07 Time = 18.12.2015 12:21:44 [Safety(Configuration)] OT Chg = 55.0 OT Chg Time = 0 OT Chg Recovery = 50.0 OT Dsg = 60.0 OT Dsg Time = 0 OT Dsg Recovery = 55.0 [Charge Inhibit Cfg(Configuration)] Chg Inhibit Temp Low = 0.0 Chg Inhibit Temp High = 45.0 Temp Hys = 5.0 [Charge(Configuration)] Suspend Low Temp = -5.0 Suspend High Temp = 55.0 [Charge Termination(Configuration)] Taper Current = 100 Min Taper Capacity = 25 Cell Taper Voltage = 100 Current Taper Window = 40 TCA Set % = -1 TCA Clear % = 95 FC Set % = 100 FC Clear % = 98 DODatEOC Delta T = 10.0 [Data(Configuration)] Rem Cap Alarm = 100 Initial Standby = -2 Initial MaxLoad = -500 Manuf Date = 18-Dez-2015 Ser. Num. = 0007 Cycle Count = 0 CC Threshold = 1750 Design Capacity = 2600 Design Energy = 32000 SOH Load I = -400 TDD SOH Percent = 90 Cell Charge Voltage T1-T2 = 3575 Cell Charge Voltage T2-T3 = 3575 Cell Charge Voltage T3-T4 = 3575 Charge Current T1-T2 = 100 Charge Current T2-T3 = 100 Charge Current T3-T4 = 100 JEITA T1 = -40 JEITA T2 = 0 JEITA T3 = 60 JEITA T4 = 90 ISD Current = 10 ISD I Filter = 127 Min ISD Time = 7 Design Energy Scale = 1 Device Name = bq34z100 Manufacturer Name = Texas Inst. Device Chemistry = LION [Discharge(Configuration)] SOC1 Set Threshold = 150 SOC1 Clear Threshold = 175 SOCF Set Threshold = 75 SOCF Clear Threshold = 100 Cell BL Set Volt Threshold = 2000 Cell BL Set Volt Time = 2 Cell BL Clear Volt Threshold = 2250 Cell BH Set Volt Threshold = 3750 Cell BH Volt Time = 2 Cell BH Clear Volt Threshold = 3575 [Manufacturer Data(Configuration)] Pack Lot Code = 0000 PCB Lot Code = 0000 Firmware Version = 0000 Hardware Revision = 0000 Cell Revision = 0000 DF Config Version = 0000 [Integrity Data(Configuration)] Static Chem DF Checksum = 6ED3 [Lifetime Data(Configuration)] Lifetime Max Temp = 30.0 Lifetime Min Temp = 20.0 Lifetime Max Chg Current = 0 Lifetime Max Dsg Current = 0 Lifetime Max Pack Voltage = 0 Lifetime Min Pack Voltage = 14000 [Lifetime Temp Samples(Configuration)] LT Flash Cnt = 0 [Registers(Configuration)] Pack Configuration = 0970 Pack Configuration B = FF Pack Configuration C = 30 LED_Comm Configuration = 00 Alert Configuration = 0000 Number of series cell = 4 [Lifetime Resolution(Configuration)] LT Temp Res = 1.0 LT Cur Res = 100 LT V Res = 25 LT Update Time = 60 [LED Display(Configuration)] LED Hold Time = 4 [Power(Configuration)] Flash Update OK Cell Volt = 2800 Sleep Current = 10 FS Wait = 0 [Manufacturer Info(System Data)] Block A 0 = 00 Block A 1 = 00 Block A 2 = 00 Block A 3 = 00 Block A 4 = 00 Block A 5 = 00 Block A 6 = 00 Block A 7 = 00 Block A 8 = 00 Block A 9 = 00 Block A 10 = 00 Block A 11 = 00 Block A 12 = 00 Block A 13 = 00 Block A 14 = 00 Block A 15 = 00 Block A 16 = 00 Block A 17 = 00 Block A 18 = 00 Block A 19 = 00 Block A 20 = 00 Block A 21 = 00 Block A 22 = 00 Block A 23 = 00 Block A 24 = 00 Block A 25 = 00 Block A 26 = 00 Block A 27 = 00 Block A 28 = 00 Block A 29 = 00 Block A 30 = 00 Block A 31 = 00 [IT Cfg(Gas Gauging)] Load Select = 1 Load Mode = 0 Max Res Factor = 30 Min Res Factor = 3 Ra Filter = 800 Fast Qmax Start DOD % = 92 Fast Qmax End DOD % = 96 Fast Qmax Start Volt Delta = 200 Cell Terminate Voltage = 2000 Cell Term V Delta = 50 ResRelax Time = 200 User Rate-mA = 0 User Rate-Pwr = 0 Reserve Cap-mAh = 0 Reserve Energy = 0 Max Scale Back Grid = 4 Cell Max DeltaV = 1500 Cell Min DeltaV = 0 Max Sim Rate = 2 Min Sim Rate = 20 Ra Max Delta = 4 Qmax Max Delta % = 5 Cell DeltaV Max Delta = 10 Fast Scale Start SOC = 10 Charge Hys V Shift = 40 [Current Thresholds(Gas Gauging)] Dsg Current Threshold = 50 Chg Current Threshold = 50 Quit Current = 30 Dsg Relax Time = 1 Chg Relax Time = 1 Quit Relax Time = 0 Cell Max IR Correct = 400 [State(Gas Gauging)] Qmax Cell 0 = 2614 Cycle Count = 0 Update Status = 02 Cell V at Chg Term = 3575 Avg I Last Run = 0 Avg P Last Run = 0 Cell Delta Voltage = 2 T Rise = 0 T Time Constant = 32767 [OCVa Table(OCV Table)] Chem ID = 0423 [R_a0(Ra Table)] Cell0 R_a flag = 0055 Cell0 R_a 0 = 98 Cell0 R_a 1 = 102 Cell0 R_a 2 = 55 Cell0 R_a 3 = 41 Cell0 R_a 4 = 17 Cell0 R_a 5 = 23 Cell0 R_a 6 = 35 Cell0 R_a 7 = 41 Cell0 R_a 8 = 52 Cell0 R_a 9 = 50 Cell0 R_a 10 = 37 Cell0 R_a 11 = 46 Cell0 R_a 12 = 112 Cell0 R_a 13 = 218 Cell0 R_a 14 = 910 [R_a0x(Ra Table)] xCell0 R_a flag = 0000 xCell0 R_a 0 = 98 xCell0 R_a 1 = 102 xCell0 R_a 2 = 55 xCell0 R_a 3 = 41 xCell0 R_a 4 = 17 xCell0 R_a 5 = 23 xCell0 R_a 6 = 35 xCell0 R_a 7 = 41 xCell0 R_a 8 = 52 xCell0 R_a 9 = 50 xCell0 R_a 10 = 37 xCell0 R_a 11 = 46 xCell0 R_a 12 = 112 xCell0 R_a 13 = 203 xCell0 R_a 14 = 847 [Data(Calibration)] CC Gain = 1,001 CC Delta = 1,000 CC Offset = -0,70 Board Offset = -0,26 Int Temp Offset = -0.5 Ext Temp Offset = 0.0 Voltage Divider = 15647 [Current(Calibration)] Deadband = 1 [Codes(Security)] Sealed to Unsealed = 36720414 Unsealed to Full = FFFFFFFF Authen Key3 = 01234567 Authen Key2 = 89ABCDEF Authen Key1 = FEDCBA98 Authen Key0 = 76543210
