BQ20Z80A-V110: absolute capacity and remaining capacity stop decrementing at ~20%SOC

Joe Brewer

Part Number: BQ20Z80A-V110
Other Parts Discussed in Thread: BQ20Z80, GPCCHEM, BQ40Z50-R2

We are having trouble with the gas gauging accuracy on the BQ20Z80 V1.10. It appears that on discharge that the absolute capacity and relative capacity both stop decrementing at ~20% SOC even though I can still get that ~20% out of the pack before the BMS opens the discharge FETs. It will then recalibrate and adjust to 0% after resting. We have tried a couple times to follow the SLA334B to help with the accuracy issues and make a golden file. The trouble is that the 3 calibration cycles do not appear to be helping the issue. We can see that after the 2 hour rest once the pack is charged and the 5 hour rest once the pack is discharge that the recalibration occurs; however it continually stops decrementing at ~20% on relative capacity and adjusting later. Something else we noticed is that the relative capacity ~20% is right around 3.48-3.5V/cell. Another data point is the QMAX values appear to be updating with each cycle as they are suppose to when making a golden file.

over 8 years ago

0 Onyx Ahiakwo over 8 years ago

TI__Guru* 76230 points

what does the gauge update the max error to? what about update status? You will need to make sure you are using the correct chem id. Verify this using our tool gpcchem on ti.com. Furthermore, you need to successfully carry out a learning cycle before the gauge can be accurate. Upon completion of a learning cycle, update status will be 06. see section 2.4 of the attached app note

www.ti.com/.../slua372r.pdf

finally, why are you using the bq20z80. it is really old and not recommended for new designs. A replacement gauge would be the bq40z50-R2

thanks
Onyx

0 Joe Brewer over 8 years ago in reply to Onyx Ahiakwo

Prodigy 50 points

update status is "06". It was reset to "00" and then we sent the IT config command to start the learning process. The update status was "04" after sending IT command, then went to "05" after charging and recalibration, then it went to "06" after discharging and recalibration. The max error is "1%". We have completed almost 3 cycles (final discharge will be done today) that the SLA334B recommends so it should be accurate by now. The chemistry is 0100 which we have been using since the product that uses the BQ20Z80 was designed and have not seen this issue before. The BQ20Z80 is being used on a current design and hopefully we can soon rev it to use a more current BMS chip; however I need to find a cause or work around for the gas gauge accuracy issue for the current design.

0 Onyx Ahiakwo over 8 years ago in reply to Joe Brewer

TI__Guru* 76230 points

So are you saying that this problem occurred on a device that has been in use for a while or this is on a brand new pack? Do you have a log and gg file from this pack exhibiting this behavior for analysis?

thanks
Onyx

0 Joe Brewer over 8 years ago in reply to Onyx Ahiakwo

Prodigy 50 points

We use our current BMS design on several different battery packs. This customer in particular has also used battery packs in the past with this BMS in it and the gas gauging was working fine for them. It is only a recent design which matched another configuration series and parallel but had a different form factor (the other configuration was a longer slimmer pack where this one is a smaller bulkier design) that is having this issue with the gas gauging. We even used the same configuration file from the other configuration for this pack since there was not any change electrically. I have .gg files (see attached) for the end of each cycle while we were trying to create the golden file.

Fullscreen End_Of_Cycle_1_081817.txt Download

[Header]
bq EVSW Version = 0.9.92	
DeviceName = bq20z80 v1.10
Time = 8/18/2017 9:11:12 AM	


[Voltage(1st Level Safety)]
COV Threshold = 4250
COV Time = 2
COV Recovery = 4150
COV Delta = 20
COV Temp. Hys = 100
POV Threshold = 12750
POV Time = 2
POV Recovery = 12450
CUV Threshold = 2400
CUV Time = 2
CUV Recovery = 3000
PUV Threshold = 7500
PUV Time = 2
PUV Recovery = 9000
[Current(1st Level Safety)]
OC (1st Tier) Chg = 8500
OC (1st Tier) Chg Time = 2
OC Chg Recovery = 1000
OC (1st Tier) Dsg = 8900
OC (1st Tier) Dsg Time = 5
OC Dsg Recovery = 200
OC (2nd Tier) Chg = 9700
OC (2nd Tier) Chg Time = 2
OC (2nd Tier) Dsg = 16000
OC (2nd Tier) Dsg Time = 2
Current Recovery Time = 5
AFE OC Dsg = 1F
AFE OC Dsg Time = 0F
AFE OC Dsg Recovery = 200
AFE SC Chg Cfg = F4
AFE SC Dsg Cfg = FF
AFE SC Recovery = 1
[Temperature(1st Level Safety)]
Over Temp Chg = 600
OT Chg Time = 2
OT Chg Recovery = 550
Over Temp Dsg = 750
OT Dsg Time = 2
OT Dsg Recovery = 700
[Host Comm(1st Level Safety)]
Host Watchdog Timeout = 0

[Voltage(2nd Level Safety)]
SOV Threshold = 13200
SOV Time = 0
Cell Imbalance Current = 5
Cell Imbalance Fail Voltage = 1000
Cell Imbalance Time = 0
Battery Rest Time = 1800
PFIN Detect Time = 0
[Current(2nd Level Safety)]
SOC Chg = 10000
SOC Chg Time = 0
SOC Dsg = 10000
SOC Dsg Time = 0
[Temperature(2nd Level Safety)]
SOT Chg = 650
SOT Chg Time = 0
SOT Dsg = 800
SOT Dsg Time = 0
Open Thermistor = -550
Open Time = 2
[FET Verification(2nd Level Safety)]
FET Fail Limit = 20
FET Fail Time = 0
[AFE Verification(2nd Level Safety)]
AFE Check Time = 0
AFE Fail Limit = 0
AFE Fail Recovery Time = 20
AFE Init Retry Limit = 6
AFE Init Limit = 20
[Fuse Verification(2nd Level Safety)]
Fuse Fail Limit = 2
Fuse Fail Time = 0

[Charge Inhibit Cfg(Charge Control)]
Chg Inhibit Temp Low = -20
Chg Inhibit Temp High = 550
Temp Hys = 10
[Pre-Charge Cfg(Charge Control)]
Pre-chg Current = 250
Pre-chg Temp = 120
Pre-chg Voltage = 3000
Recovery Voltage = 3100
[Fast Charge Cfg(Charge Control)]
Fast Charge Current = 8000
Charging Voltage = 12600
Delta Temp = 50
Suspend Low Temp = -50
Suspend High Temp = 450
[Pulse Charge Cfg(Charge Control)]
Turn ON Voltage = 4175
Turn OFF Voltage = 4200
Max ON Pulse Time = 240
Min OFF Pulse Time = 0
Max OFF Voltage = 4221
[Termination Cfg.(Charge Control)]
Maintenance Current = 0
Taper Current = 50
Termination Voltage = 300
Current Taper Window = 10
TCA Set % = 102
TCA Clear % = 99
FC Set % = 102
FC Clear % = 99
[Cell Balancing Cfg(Charge Control)]
Min Cell Deviation = 1750
[Charging Faults(Charge Control)]
Over Charging Voltage = 500
Over Charging Volt Time = 2
Over Charging Current = 500
Over Charging Curr Time = 2
Over Charging Curr Recov = 100
Depleted Voltage = 7500
Depleted Voltage Time = 2
Depleted Recovery = 9000
Over Charge Capacity = 300
Over Charge Recovery = 2
FC-MTO = 0
PC-MTO = 0
Charge Fault Cfg = 00

[Data(SBS Configuration)]
Rem Cap Alarm = 300
Rem Energy Alarm = 4300
Rem Time Alarm = 10
Init Battery Mode = 0081
Design Voltage = 11100
Spec Info = 0031
Manuf Date = 01-Aug-2017
Ser. Num. = 0001
Cycle Count = 1
CC Threshold = 3520
CC % = 75
CF MaxError Limit = 100
Design Capacity = 20000
Design Energy = 22200
Manuf Name = XXXXX
Device Name = 3S8P
Device Chemistry = LION
[Configuration(SBS Configuration)]
TDA Set % = -1
TDA Clear % = 8
FD Set % = -1
FD Clear % = 5
TDA Set Volt Threshold = 7500
TDA Set Volt Time = 5
TDA Clear Volt = 9000
FD Set Volt Threshold = 7500
FD Volt Time = 5
FD Clear Volt = 9000

[Manufacturer Data(System Data)]
Pack Lot Code = 0000
PCB Lot Code = 0000
Firmware Version = 0110
Hardware Revision = 0000
Cell Revision = 0000
[Manufacturer Info(System Data)]
Manuf. Info = Pack_Num
[Lifetime Data(System Data)]
Lifetime Max Temp = 282
Lifetime Min Temp = 0
Lifetime Max Cell Voltage = 4220
Lifetime Min Cell Voltage = 3232
Lifetime Max Pack Voltage = 12647
Lifetime Min Pack Voltage = 9705
Lifetime Max Chg Current = 1991
Lifetime Max Dsg Current = -3005
Lifetime Max Chg Power = 2507
Lifetime Max Dsg Power = -3721
Life Max AvgDsg Cur = -3004
Life Max AvgDsg Pow = -3305
Lifetime Avg Temp = 229
[Lifetime Temp Samples(System Data)]
LT Temp Samples = 425

[Registers(Configuration)]
Operation Cfg A = 0201
Operation Cfg B = 69F8
Operation Cfg C = 0000
Permanent Fail Cfg = 0000
Non-Removable Cfg = 0000

[LED Cfg(LED Support)]
LED Flash Rate = 512
LED Blink Rate = 200
LED Delay = 100
LED Hold Time = 4
CHG Flash Alarm = 10
CHG Thresh 1 = 0
CHG Thresh 2 = 20
CHG Thresh 3 = 40
CHG Thresh 4 = 60
CHG Thresh 5 = 80
DSG Flash Alarm = 10
DSG Thresh 1 = 0
DSG Thresh 2 = 20
DSG Thresh 3 = 40
DSG Thresh 4 = 60
DSG Thresh 5 = 80

[Power(Power)]
Flash Update OK Voltage = 7500
Shutdown Voltage = 6500
Shutdown Time = 10
Charger Present = 9000
Sleep Current = 10
Bus Low Time = 5
Cal Inhibit Temp Low = 50
Cal Inhibit Temp High = 450
Sleep Voltage Time = 5
Sleep Current Time = 20

[IT Cfg(Gas Gauging)]
Load Select = 3
Load Mode = 0
Term Voltage = 9000
User Rate-mA = 0
User Rate-mW = 0
Reserve Cap-mAh = 0
Reserve Cap-mWh = 0
[Current Thresholds(Gas Gauging)]
Dsg Current Threshold = 100
Chg Current Threshold = 50
Quit Current = 10
Dsg Relax Time = 1
Chg Relax Time = 60
[State(Gas Gauging)]
Qmax Cell 0 = 18637
Qmax Cell 1 = 18632
Qmax Cell 2 = 18637
Qmax Cell 3 = 20000
Qmax Pack = 18632
Update Status = 06
Avg I Last Run = -3004
Avg P Last Run = -3305
Delta Voltage = 4

[R_a0(Ra Table)]
Cell0 R_a flag = 0000
Cell0 R_a 0 = 52
Cell0 R_a 1 = 53
Cell0 R_a 2 = 49
Cell0 R_a 3 = 44
Cell0 R_a 4 = 39
Cell0 R_a 5 = 43
Cell0 R_a 6 = 44
Cell0 R_a 7 = 44
Cell0 R_a 8 = 44
Cell0 R_a 9 = 47
Cell0 R_a 10 = 49
Cell0 R_a 11 = 50
Cell0 R_a 12 = 34
Cell0 R_a 13 = 50
Cell0 R_a 14 = 75
[R_a1(Ra Table)]
Cell1 R_a flag = 0000
Cell1 R_a 0 = 39
Cell1 R_a 1 = 40
Cell1 R_a 2 = 38
Cell1 R_a 3 = 33
Cell1 R_a 4 = 29
Cell1 R_a 5 = 30
Cell1 R_a 6 = 32
Cell1 R_a 7 = 33
Cell1 R_a 8 = 32
Cell1 R_a 9 = 33
Cell1 R_a 10 = 34
Cell1 R_a 11 = 37
Cell1 R_a 12 = 16
Cell1 R_a 13 = 23
Cell1 R_a 14 = 33
[R_a2(Ra Table)]
Cell2 R_a flag = 0000
Cell2 R_a 0 = 45
Cell2 R_a 1 = 48
Cell2 R_a 2 = 44
Cell2 R_a 3 = 41
Cell2 R_a 4 = 38
Cell2 R_a 5 = 38
Cell2 R_a 6 = 40
Cell2 R_a 7 = 41
Cell2 R_a 8 = 41
Cell2 R_a 9 = 44
Cell2 R_a 10 = 47
Cell2 R_a 11 = 47
Cell2 R_a 12 = 31
Cell2 R_a 13 = 48
Cell2 R_a 14 = 71
[R_a3(Ra Table)]
Cell3 R_a flag = FF55
Cell3 R_a 0 = 0
Cell3 R_a 1 = 0
Cell3 R_a 2 = 0
Cell3 R_a 3 = 0
Cell3 R_a 4 = 0
Cell3 R_a 5 = 0
Cell3 R_a 6 = 0
Cell3 R_a 7 = 0
Cell3 R_a 8 = 0
Cell3 R_a 9 = 0
Cell3 R_a 10 = 0
Cell3 R_a 11 = 0
Cell3 R_a 12 = 0
Cell3 R_a 13 = 0
Cell3 R_a 14 = 0
[R_a0x(Ra Table)]
xCell0 R_a flag = 0055
xCell0 R_a 0 = 52
xCell0 R_a 1 = 53
xCell0 R_a 2 = 68
xCell0 R_a 3 = 61
xCell0 R_a 4 = 54
xCell0 R_a 5 = 60
xCell0 R_a 6 = 61
xCell0 R_a 7 = 61
xCell0 R_a 8 = 61
xCell0 R_a 9 = 65
xCell0 R_a 10 = 68
xCell0 R_a 11 = 69
xCell0 R_a 12 = 47
xCell0 R_a 13 = 69
xCell0 R_a 14 = 104
[R_a1x(Ra Table)]
xCell1 R_a flag = 0055
xCell1 R_a 0 = 39
xCell1 R_a 1 = 40
xCell1 R_a 2 = 59
xCell1 R_a 3 = 51
xCell1 R_a 4 = 45
xCell1 R_a 5 = 47
xCell1 R_a 6 = 50
xCell1 R_a 7 = 51
xCell1 R_a 8 = 50
xCell1 R_a 9 = 51
xCell1 R_a 10 = 53
xCell1 R_a 11 = 57
xCell1 R_a 12 = 25
xCell1 R_a 13 = 36
xCell1 R_a 14 = 51
[R_a2x(Ra Table)]
xCell2 R_a flag = 0055
xCell2 R_a 0 = 45
xCell2 R_a 1 = 48
xCell2 R_a 2 = 63
xCell2 R_a 3 = 59
xCell2 R_a 4 = 54
xCell2 R_a 5 = 54
xCell2 R_a 6 = 57
xCell2 R_a 7 = 59
xCell2 R_a 8 = 59
xCell2 R_a 9 = 63
xCell2 R_a 10 = 67
xCell2 R_a 11 = 67
xCell2 R_a 12 = 44
xCell2 R_a 13 = 69
xCell2 R_a 14 = 102
[R_a3x(Ra Table)]
xCell3 R_a flag = FFFF
xCell3 R_a 0 = 0
xCell3 R_a 1 = 0
xCell3 R_a 2 = 0
xCell3 R_a 3 = 0
xCell3 R_a 4 = 0
xCell3 R_a 5 = 0
xCell3 R_a 6 = 0
xCell3 R_a 7 = 0
xCell3 R_a 8 = 0
xCell3 R_a 9 = 0
xCell3 R_a 10 = 0
xCell3 R_a 11 = 0
xCell3 R_a 12 = 0
xCell3 R_a 13 = 0
xCell3 R_a 14 = 0

[Device Status Data(PF Status)]
PF Flags 1 = 0000
Fuse Flag = 0000
PF Voltage = 0
PF C4 Voltage = 0
PF C3 Voltage = 0
PF C2 Voltage = 0
PF C1 Voltage = 0
PF Current = 0
PF Temperature = 0
PF Batt Stat = 0000
PF RC-mAh = 0
PF RC-10mWh = 0
PF Chg Status = 0000
PF Safety Status = 0000
PF Flags 2 = 0000
[AFE Regs(PF Status)]
AFE Status = 00
AFE Output = 00
AFE State = 00
AFE Function = 00
AFE Cell Select = 00
AFE OLV = 00
AFE OLT = 00
AFE SCC = 00
AFE SCD = 00

[Data(Calibration)]
CC Gain = 0.9351
CC Delta = 278908.75
Ref Voltage = 2451.9
AFE Corr = 1288
AFE Pack Gain = 30625
CC Offset = -9564
Board Offset = 0
Int Temp Offset = -21
Ext1 Temp Offset = 0
Ext2 Temp Offset = 0
[Config(Calibration)]
CC Current = 0
Voltage Signal = 0
Temp Signal = 298.2
CC Offset Time = 250
ADC Offset Time = 32
CC Gain Time = 250
Voltage Time = 1984
Temperature Time = 32
Cal Mode Timeout = 38400
[Temp Model(Calibration)]
Ext Coef 1 = -28285
Ext Coef 2 = 20848
Ext Coef 3 = -7537
Ext Coef 4 = 4012
Ext Min AD = 0
Ext Max Temp = 4012
Int Coef 1 = 0
Int Coef 2 = 0
Int Coef 3 = -11136
Int Coef 4 = 5754
Int Min AD = 0
Int Max Temp = 5754
[Current(Calibration)]
Filter = 239
Deadband = 3
CC Deadband = 34
CC Max Deadband = 5
CC Deadband Sample = 256
CC Max Offset Sample = 64

Fullscreen End_Of_Cycle_2_082317.txt Download

[Header]
bq EVSW Version = 0.9.92	
DeviceName = bq20z80 v1.10
Time = 8/23/2017 8:42:30 AM	


[Voltage(1st Level Safety)]
COV Threshold = 4250
COV Time = 2
COV Recovery = 4150
COV Delta = 20
COV Temp. Hys = 100
POV Threshold = 12750
POV Time = 2
POV Recovery = 12450
CUV Threshold = 2400
CUV Time = 2
CUV Recovery = 3000
PUV Threshold = 7500
PUV Time = 2
PUV Recovery = 9000
[Current(1st Level Safety)]
OC (1st Tier) Chg = 8500
OC (1st Tier) Chg Time = 2
OC Chg Recovery = 1000
OC (1st Tier) Dsg = 8900
OC (1st Tier) Dsg Time = 5
OC Dsg Recovery = 200
OC (2nd Tier) Chg = 9700
OC (2nd Tier) Chg Time = 2
OC (2nd Tier) Dsg = 16000
OC (2nd Tier) Dsg Time = 2
Current Recovery Time = 5
AFE OC Dsg = 1F
AFE OC Dsg Time = 0F
AFE OC Dsg Recovery = 200
AFE SC Chg Cfg = F4
AFE SC Dsg Cfg = FF
AFE SC Recovery = 1
[Temperature(1st Level Safety)]
Over Temp Chg = 600
OT Chg Time = 2
OT Chg Recovery = 550
Over Temp Dsg = 750
OT Dsg Time = 2
OT Dsg Recovery = 700
[Host Comm(1st Level Safety)]
Host Watchdog Timeout = 0

[Voltage(2nd Level Safety)]
SOV Threshold = 13200
SOV Time = 0
Cell Imbalance Current = 5
Cell Imbalance Fail Voltage = 1000
Cell Imbalance Time = 0
Battery Rest Time = 1800
PFIN Detect Time = 0
[Current(2nd Level Safety)]
SOC Chg = 10000
SOC Chg Time = 0
SOC Dsg = 10000
SOC Dsg Time = 0
[Temperature(2nd Level Safety)]
SOT Chg = 650
SOT Chg Time = 0
SOT Dsg = 800
SOT Dsg Time = 0
Open Thermistor = -550
Open Time = 2
[FET Verification(2nd Level Safety)]
FET Fail Limit = 20
FET Fail Time = 0
[AFE Verification(2nd Level Safety)]
AFE Check Time = 0
AFE Fail Limit = 0
AFE Fail Recovery Time = 20
AFE Init Retry Limit = 6
AFE Init Limit = 20
[Fuse Verification(2nd Level Safety)]
Fuse Fail Limit = 2
Fuse Fail Time = 0

[Charge Inhibit Cfg(Charge Control)]
Chg Inhibit Temp Low = -20
Chg Inhibit Temp High = 550
Temp Hys = 10
[Pre-Charge Cfg(Charge Control)]
Pre-chg Current = 250
Pre-chg Temp = 120
Pre-chg Voltage = 3000
Recovery Voltage = 3100
[Fast Charge Cfg(Charge Control)]
Fast Charge Current = 8000
Charging Voltage = 12600
Delta Temp = 50
Suspend Low Temp = -50
Suspend High Temp = 450
[Pulse Charge Cfg(Charge Control)]
Turn ON Voltage = 4175
Turn OFF Voltage = 4200
Max ON Pulse Time = 240
Min OFF Pulse Time = 0
Max OFF Voltage = 4221
[Termination Cfg.(Charge Control)]
Maintenance Current = 0
Taper Current = 750
Termination Voltage = 300
Current Taper Window = 10
TCA Set % = 102
TCA Clear % = 99
FC Set % = 102
FC Clear % = 99
[Cell Balancing Cfg(Charge Control)]
Min Cell Deviation = 1750
[Charging Faults(Charge Control)]
Over Charging Voltage = 500
Over Charging Volt Time = 2
Over Charging Current = 500
Over Charging Curr Time = 2
Over Charging Curr Recov = 100
Depleted Voltage = 7500
Depleted Voltage Time = 2
Depleted Recovery = 9000
Over Charge Capacity = 300
Over Charge Recovery = 2
FC-MTO = 0
PC-MTO = 0
Charge Fault Cfg = 00

[Data(SBS Configuration)]
Rem Cap Alarm = 300
Rem Energy Alarm = 4300
Rem Time Alarm = 10
Init Battery Mode = 0081
Design Voltage = 11100
Spec Info = 0031
Manuf Date = 01-Aug-2017
Ser. Num. = 0001
Cycle Count = 2
CC Threshold = 3520
CC % = 75
CF MaxError Limit = 100
Design Capacity = 20000
Design Energy = 22200
Manuf Name = XXXXX
Device Name = 3S8P
Device Chemistry = LION
[Configuration(SBS Configuration)]
TDA Set % = -1
TDA Clear % = 8
FD Set % = -1
FD Clear % = 5
TDA Set Volt Threshold = 7500
TDA Set Volt Time = 5
TDA Clear Volt = 9000
FD Set Volt Threshold = 7500
FD Volt Time = 5
FD Clear Volt = 9000

[Manufacturer Data(System Data)]
Pack Lot Code = 0000
PCB Lot Code = 0000
Firmware Version = 0110
Hardware Revision = 0000
Cell Revision = 0000
[Manufacturer Info(System Data)]
Manuf. Info = Pack_Num
[Lifetime Data(System Data)]
Lifetime Max Temp = 373
Lifetime Min Temp = 0
Lifetime Max Cell Voltage = 4220
Lifetime Min Cell Voltage = 2369
Lifetime Max Pack Voltage = 12647
Lifetime Min Pack Voltage = 7651
Lifetime Max Chg Current = 4975
Lifetime Max Dsg Current = -3024
Lifetime Max Chg Power = 6218
Lifetime Max Dsg Power = -3722
Life Max AvgDsg Cur = -3004
Life Max AvgDsg Pow = -3305
Lifetime Avg Temp = 229
[Lifetime Temp Samples(System Data)]
LT Temp Samples = 2282

[Registers(Configuration)]
Operation Cfg A = 0201
Operation Cfg B = 69F8
Operation Cfg C = 0000
Permanent Fail Cfg = 0000
Non-Removable Cfg = 0000

[LED Cfg(LED Support)]
LED Flash Rate = 512
LED Blink Rate = 200
LED Delay = 100
LED Hold Time = 4
CHG Flash Alarm = 10
CHG Thresh 1 = 0
CHG Thresh 2 = 20
CHG Thresh 3 = 40
CHG Thresh 4 = 60
CHG Thresh 5 = 80
DSG Flash Alarm = 10
DSG Thresh 1 = 0
DSG Thresh 2 = 20
DSG Thresh 3 = 40
DSG Thresh 4 = 60
DSG Thresh 5 = 80

[Power(Power)]
Flash Update OK Voltage = 7500
Shutdown Voltage = 6500
Shutdown Time = 10
Charger Present = 9000
Sleep Current = 10
Bus Low Time = 5
Cal Inhibit Temp Low = 50
Cal Inhibit Temp High = 450
Sleep Voltage Time = 5
Sleep Current Time = 20

[IT Cfg(Gas Gauging)]
Load Select = 3
Load Mode = 0
Term Voltage = 9000
User Rate-mA = 0
User Rate-mW = 0
Reserve Cap-mAh = 0
Reserve Cap-mWh = 0
[Current Thresholds(Gas Gauging)]
Dsg Current Threshold = 100
Chg Current Threshold = 50
Quit Current = 10
Dsg Relax Time = 1
Chg Relax Time = 60
[State(Gas Gauging)]
Qmax Cell 0 = 18263
Qmax Cell 1 = 18214
Qmax Cell 2 = 18246
Qmax Cell 3 = 20000
Qmax Pack = 18214
Update Status = 06
Avg I Last Run = -2681
Avg P Last Run = -2926
Delta Voltage = 6

[R_a0(Ra Table)]
Cell0 R_a flag = 0000
Cell0 R_a 0 = 48
Cell0 R_a 1 = 49
Cell0 R_a 2 = 64
Cell0 R_a 3 = 87
Cell0 R_a 4 = 102
Cell0 R_a 5 = 116
Cell0 R_a 6 = 132
Cell0 R_a 7 = 134
Cell0 R_a 8 = 134
Cell0 R_a 9 = 143
Cell0 R_a 10 = 151
Cell0 R_a 11 = 152
Cell0 R_a 12 = 104
Cell0 R_a 13 = 152
Cell0 R_a 14 = 230
[R_a1(Ra Table)]
Cell1 R_a flag = 0055
Cell1 R_a 0 = 38
Cell1 R_a 1 = 39
Cell1 R_a 2 = 56
Cell1 R_a 3 = 80
Cell1 R_a 4 = 96
Cell1 R_a 5 = 108
Cell1 R_a 6 = 124
Cell1 R_a 7 = 127
Cell1 R_a 8 = 124
Cell1 R_a 9 = 127
Cell1 R_a 10 = 131
Cell1 R_a 11 = 142
Cell1 R_a 12 = 60
Cell1 R_a 13 = 90
Cell1 R_a 14 = 127
[R_a2(Ra Table)]
Cell2 R_a flag = 0000
Cell2 R_a 0 = 42
Cell2 R_a 1 = 45
Cell2 R_a 2 = 59
Cell2 R_a 3 = 85
Cell2 R_a 4 = 97
Cell2 R_a 5 = 112
Cell2 R_a 6 = 127
Cell2 R_a 7 = 131
Cell2 R_a 8 = 131
Cell2 R_a 9 = 141
Cell2 R_a 10 = 150
Cell2 R_a 11 = 150
Cell2 R_a 12 = 98
Cell2 R_a 13 = 155
Cell2 R_a 14 = 230
[R_a3(Ra Table)]
Cell3 R_a flag = FF55
Cell3 R_a 0 = 0
Cell3 R_a 1 = 0
Cell3 R_a 2 = 0
Cell3 R_a 3 = 0
Cell3 R_a 4 = 0
Cell3 R_a 5 = 0
Cell3 R_a 6 = 0
Cell3 R_a 7 = 0
Cell3 R_a 8 = 0
Cell3 R_a 9 = 0
Cell3 R_a 10 = 0
Cell3 R_a 11 = 0
Cell3 R_a 12 = 0
Cell3 R_a 13 = 0
Cell3 R_a 14 = 0
[R_a0x(Ra Table)]
xCell0 R_a flag = 0055
xCell0 R_a 0 = 48
xCell0 R_a 1 = 49
xCell0 R_a 2 = 64
xCell0 R_a 3 = 87
xCell0 R_a 4 = 102
xCell0 R_a 5 = 116
xCell0 R_a 6 = 132
xCell0 R_a 7 = 134
xCell0 R_a 8 = 133
xCell0 R_a 9 = 142
xCell0 R_a 10 = 150
xCell0 R_a 11 = 151
xCell0 R_a 12 = 103
xCell0 R_a 13 = 151
xCell0 R_a 14 = 228
[R_a1x(Ra Table)]
xCell1 R_a flag = 0000
xCell1 R_a 0 = 38
xCell1 R_a 1 = 39
xCell1 R_a 2 = 56
xCell1 R_a 3 = 80
xCell1 R_a 4 = 96
xCell1 R_a 5 = 108
xCell1 R_a 6 = 124
xCell1 R_a 7 = 127
xCell1 R_a 8 = 124
xCell1 R_a 9 = 127
xCell1 R_a 10 = 131
xCell1 R_a 11 = 142
xCell1 R_a 12 = 60
xCell1 R_a 13 = 90
xCell1 R_a 14 = 127
[R_a2x(Ra Table)]
xCell2 R_a flag = 0055
xCell2 R_a 0 = 42
xCell2 R_a 1 = 45
xCell2 R_a 2 = 59
xCell2 R_a 3 = 85
xCell2 R_a 4 = 97
xCell2 R_a 5 = 112
xCell2 R_a 6 = 127
xCell2 R_a 7 = 131
xCell2 R_a 8 = 130
xCell2 R_a 9 = 140
xCell2 R_a 10 = 149
xCell2 R_a 11 = 149
xCell2 R_a 12 = 97
xCell2 R_a 13 = 154
xCell2 R_a 14 = 228
[R_a3x(Ra Table)]
xCell3 R_a flag = FFFF
xCell3 R_a 0 = 0
xCell3 R_a 1 = 0
xCell3 R_a 2 = 0
xCell3 R_a 3 = 0
xCell3 R_a 4 = 0
xCell3 R_a 5 = 0
xCell3 R_a 6 = 0
xCell3 R_a 7 = 0
xCell3 R_a 8 = 0
xCell3 R_a 9 = 0
xCell3 R_a 10 = 0
xCell3 R_a 11 = 0
xCell3 R_a 12 = 0
xCell3 R_a 13 = 0
xCell3 R_a 14 = 0

[Device Status Data(PF Status)]
PF Flags 1 = 0000
Fuse Flag = 0000
PF Voltage = 0
PF C4 Voltage = 0
PF C3 Voltage = 0
PF C2 Voltage = 0
PF C1 Voltage = 0
PF Current = 0
PF Temperature = 0
PF Batt Stat = 0000
PF RC-mAh = 0
PF RC-10mWh = 0
PF Chg Status = 0000
PF Safety Status = 0000
PF Flags 2 = 0000
[AFE Regs(PF Status)]
AFE Status = 00
AFE Output = 00
AFE State = 00
AFE Function = 00
AFE Cell Select = 00
AFE OLV = 00
AFE OLT = 00
AFE SCC = 00
AFE SCD = 00

[Data(Calibration)]
CC Gain = 0.9351
CC Delta = 278908.75
Ref Voltage = 2451.9
AFE Corr = 1288
AFE Pack Gain = 30625
CC Offset = -9564
Board Offset = 0
Int Temp Offset = -21
Ext1 Temp Offset = 0
Ext2 Temp Offset = 0
[Config(Calibration)]
CC Current = 0
Voltage Signal = 0
Temp Signal = 298.2
CC Offset Time = 250
ADC Offset Time = 32
CC Gain Time = 250
Voltage Time = 1984
Temperature Time = 32
Cal Mode Timeout = 38400
[Temp Model(Calibration)]
Ext Coef 1 = -28285
Ext Coef 2 = 20848
Ext Coef 3 = -7537
Ext Coef 4 = 4012
Ext Min AD = 0
Ext Max Temp = 4012
Int Coef 1 = 0
Int Coef 2 = 0
Int Coef 3 = -11136
Int Coef 4 = 5754
Int Min AD = 0
Int Max Temp = 5754
[Current(Calibration)]
Filter = 239
Deadband = 3
CC Deadband = 34
CC Max Deadband = 5
CC Deadband Sample = 256
CC Max Offset Sample = 64

Fullscreen End_Of_Cycle_3_082517.txt Download

[Header]
bq EVSW Version = 0.9.92	
DeviceName = bq20z80 v1.10
Time = 8/25/2017 7:15:54 AM	


[Voltage(1st Level Safety)]
COV Threshold = 4250
COV Time = 2
COV Recovery = 4150
COV Delta = 20
COV Temp. Hys = 100
POV Threshold = 12750
POV Time = 2
POV Recovery = 12450
CUV Threshold = 2400
CUV Time = 2
CUV Recovery = 3000
PUV Threshold = 7500
PUV Time = 2
PUV Recovery = 9000
[Current(1st Level Safety)]
OC (1st Tier) Chg = 8500
OC (1st Tier) Chg Time = 2
OC Chg Recovery = 1000
OC (1st Tier) Dsg = 8900
OC (1st Tier) Dsg Time = 5
OC Dsg Recovery = 200
OC (2nd Tier) Chg = 9700
OC (2nd Tier) Chg Time = 2
OC (2nd Tier) Dsg = 16000
OC (2nd Tier) Dsg Time = 2
Current Recovery Time = 5
AFE OC Dsg = 1F
AFE OC Dsg Time = 0F
AFE OC Dsg Recovery = 200
AFE SC Chg Cfg = F4
AFE SC Dsg Cfg = FF
AFE SC Recovery = 1
[Temperature(1st Level Safety)]
Over Temp Chg = 600
OT Chg Time = 2
OT Chg Recovery = 550
Over Temp Dsg = 750
OT Dsg Time = 2
OT Dsg Recovery = 700
[Host Comm(1st Level Safety)]
Host Watchdog Timeout = 0

[Voltage(2nd Level Safety)]
SOV Threshold = 13200
SOV Time = 0
Cell Imbalance Current = 5
Cell Imbalance Fail Voltage = 1000
Cell Imbalance Time = 0
Battery Rest Time = 1800
PFIN Detect Time = 0
[Current(2nd Level Safety)]
SOC Chg = 10000
SOC Chg Time = 0
SOC Dsg = 10000
SOC Dsg Time = 0
[Temperature(2nd Level Safety)]
SOT Chg = 650
SOT Chg Time = 0
SOT Dsg = 800
SOT Dsg Time = 0
Open Thermistor = -550
Open Time = 2
[FET Verification(2nd Level Safety)]
FET Fail Limit = 20
FET Fail Time = 0
[AFE Verification(2nd Level Safety)]
AFE Check Time = 0
AFE Fail Limit = 0
AFE Fail Recovery Time = 20
AFE Init Retry Limit = 6
AFE Init Limit = 20
[Fuse Verification(2nd Level Safety)]
Fuse Fail Limit = 2
Fuse Fail Time = 0

[Charge Inhibit Cfg(Charge Control)]
Chg Inhibit Temp Low = -20
Chg Inhibit Temp High = 550
Temp Hys = 10
[Pre-Charge Cfg(Charge Control)]
Pre-chg Current = 250
Pre-chg Temp = 120
Pre-chg Voltage = 3000
Recovery Voltage = 3100
[Fast Charge Cfg(Charge Control)]
Fast Charge Current = 8000
Charging Voltage = 12600
Delta Temp = 50
Suspend Low Temp = -50
Suspend High Temp = 450
[Pulse Charge Cfg(Charge Control)]
Turn ON Voltage = 4175
Turn OFF Voltage = 4200
Max ON Pulse Time = 240
Min OFF Pulse Time = 0
Max OFF Voltage = 4221
[Termination Cfg.(Charge Control)]
Maintenance Current = 0
Taper Current = 750
Termination Voltage = 300
Current Taper Window = 10
TCA Set % = 102
TCA Clear % = 99
FC Set % = 102
FC Clear % = 99
[Cell Balancing Cfg(Charge Control)]
Min Cell Deviation = 1750
[Charging Faults(Charge Control)]
Over Charging Voltage = 500
Over Charging Volt Time = 2
Over Charging Current = 500
Over Charging Curr Time = 2
Over Charging Curr Recov = 100
Depleted Voltage = 7500
Depleted Voltage Time = 2
Depleted Recovery = 9000
Over Charge Capacity = 300
Over Charge Recovery = 2
FC-MTO = 0
PC-MTO = 0
Charge Fault Cfg = 00

[Data(SBS Configuration)]
Rem Cap Alarm = 300
Rem Energy Alarm = 4300
Rem Time Alarm = 10
Init Battery Mode = 0081
Design Voltage = 11100
Spec Info = 0031
Manuf Date = 01-Aug-2017
Ser. Num. = 0001
Cycle Count = 3
CC Threshold = 3520
CC % = 75
CF MaxError Limit = 100
Design Capacity = 20000
Design Energy = 22200
Manuf Name = XXXXX
Device Name = 3S8P
Device Chemistry = LION
[Configuration(SBS Configuration)]
TDA Set % = -1
TDA Clear % = 8
FD Set % = -1
FD Clear % = 5
TDA Set Volt Threshold = 7500
TDA Set Volt Time = 5
TDA Clear Volt = 9000
FD Set Volt Threshold = 7500
FD Volt Time = 5
FD Clear Volt = 9000

[Manufacturer Data(System Data)]
Pack Lot Code = 0000
PCB Lot Code = 0000
Firmware Version = 0110
Hardware Revision = 0000
Cell Revision = 0000
[Manufacturer Info(System Data)]
Manuf. Info = Pack_Num
[Lifetime Data(System Data)]
Lifetime Max Temp = 373
Lifetime Min Temp = 0
Lifetime Max Cell Voltage = 4220
Lifetime Min Cell Voltage = 2369
Lifetime Max Pack Voltage = 12647
Lifetime Min Pack Voltage = 7651
Lifetime Max Chg Current = 4975
Lifetime Max Dsg Current = -3024
Lifetime Max Chg Power = 6218
Lifetime Max Dsg Power = -3748
Life Max AvgDsg Cur = -3004
Life Max AvgDsg Pow = -3305
Lifetime Avg Temp = 229
[Lifetime Temp Samples(System Data)]
LT Temp Samples = 2943

[Registers(Configuration)]
Operation Cfg A = 0201
Operation Cfg B = 69F8
Operation Cfg C = 0000
Permanent Fail Cfg = 0000
Non-Removable Cfg = 0000

[LED Cfg(LED Support)]
LED Flash Rate = 512
LED Blink Rate = 200
LED Delay = 100
LED Hold Time = 4
CHG Flash Alarm = 10
CHG Thresh 1 = 0
CHG Thresh 2 = 20
CHG Thresh 3 = 40
CHG Thresh 4 = 60
CHG Thresh 5 = 80
DSG Flash Alarm = 10
DSG Thresh 1 = 0
DSG Thresh 2 = 20
DSG Thresh 3 = 40
DSG Thresh 4 = 60
DSG Thresh 5 = 80

[Power(Power)]
Flash Update OK Voltage = 7500
Shutdown Voltage = 6500
Shutdown Time = 10
Charger Present = 9000
Sleep Current = 10
Bus Low Time = 5
Cal Inhibit Temp Low = 50
Cal Inhibit Temp High = 450
Sleep Voltage Time = 5
Sleep Current Time = 20

[IT Cfg(Gas Gauging)]
Load Select = 3
Load Mode = 0
Term Voltage = 9000
User Rate-mA = 0
User Rate-mW = 0
Reserve Cap-mAh = 0
Reserve Cap-mWh = 0
[Current Thresholds(Gas Gauging)]
Dsg Current Threshold = 100
Chg Current Threshold = 50
Quit Current = 10
Dsg Relax Time = 1
Chg Relax Time = 60
[State(Gas Gauging)]
Qmax Cell 0 = 18492
Qmax Cell 1 = 18471
Qmax Cell 2 = 18488
Qmax Cell 3 = 20000
Qmax Pack = 18471
Update Status = 06
Avg I Last Run = -2693
Avg P Last Run = -2985
Delta Voltage = 6

[R_a0(Ra Table)]
Cell0 R_a flag = 0000
Cell0 R_a 0 = 44
Cell0 R_a 1 = 45
Cell0 R_a 2 = 62
Cell0 R_a 3 = 88
Cell0 R_a 4 = 104
Cell0 R_a 5 = 119
Cell0 R_a 6 = 135
Cell0 R_a 7 = 145
Cell0 R_a 8 = 144
Cell0 R_a 9 = 155
Cell0 R_a 10 = 164
Cell0 R_a 11 = 165
Cell0 R_a 12 = 113
Cell0 R_a 13 = 165
Cell0 R_a 14 = 248
[R_a1(Ra Table)]
Cell1 R_a flag = 0055
Cell1 R_a 0 = 32
Cell1 R_a 1 = 33
Cell1 R_a 2 = 56
Cell1 R_a 3 = 80
Cell1 R_a 4 = 97
Cell1 R_a 5 = 110
Cell1 R_a 6 = 128
Cell1 R_a 7 = 137
Cell1 R_a 8 = 158
Cell1 R_a 9 = 160
Cell1 R_a 10 = 166
Cell1 R_a 11 = 181
Cell1 R_a 12 = 77
Cell1 R_a 13 = 116
Cell1 R_a 14 = 160
[R_a2(Ra Table)]
Cell2 R_a flag = 0000
Cell2 R_a 0 = 39
Cell2 R_a 1 = 42
Cell2 R_a 2 = 59
Cell2 R_a 3 = 85
Cell2 R_a 4 = 101
Cell2 R_a 5 = 115
Cell2 R_a 6 = 132
Cell2 R_a 7 = 142
Cell2 R_a 8 = 141
Cell2 R_a 9 = 153
Cell2 R_a 10 = 162
Cell2 R_a 11 = 162
Cell2 R_a 12 = 106
Cell2 R_a 13 = 167
Cell2 R_a 14 = 247
[R_a3(Ra Table)]
Cell3 R_a flag = FF55
Cell3 R_a 0 = 0
Cell3 R_a 1 = 0
Cell3 R_a 2 = 0
Cell3 R_a 3 = 0
Cell3 R_a 4 = 0
Cell3 R_a 5 = 0
Cell3 R_a 6 = 0
Cell3 R_a 7 = 0
Cell3 R_a 8 = 0
Cell3 R_a 9 = 0
Cell3 R_a 10 = 0
Cell3 R_a 11 = 0
Cell3 R_a 12 = 0
Cell3 R_a 13 = 0
Cell3 R_a 14 = 0
[R_a0x(Ra Table)]
xCell0 R_a flag = 0055
xCell0 R_a 0 = 44
xCell0 R_a 1 = 45
xCell0 R_a 2 = 62
xCell0 R_a 3 = 88
xCell0 R_a 4 = 104
xCell0 R_a 5 = 119
xCell0 R_a 6 = 135
xCell0 R_a 7 = 145
xCell0 R_a 8 = 166
xCell0 R_a 9 = 179
xCell0 R_a 10 = 189
xCell0 R_a 11 = 190
xCell0 R_a 12 = 130
xCell0 R_a 13 = 190
xCell0 R_a 14 = 286
[R_a1x(Ra Table)]
xCell1 R_a flag = 0000
xCell1 R_a 0 = 32
xCell1 R_a 1 = 33
xCell1 R_a 2 = 56
xCell1 R_a 3 = 80
xCell1 R_a 4 = 97
xCell1 R_a 5 = 110
xCell1 R_a 6 = 128
xCell1 R_a 7 = 137
xCell1 R_a 8 = 135
xCell1 R_a 9 = 137
xCell1 R_a 10 = 142
xCell1 R_a 11 = 155
xCell1 R_a 12 = 66
xCell1 R_a 13 = 99
xCell1 R_a 14 = 137
[R_a2x(Ra Table)]
xCell2 R_a flag = 0055
xCell2 R_a 0 = 39
xCell2 R_a 1 = 42
xCell2 R_a 2 = 59
xCell2 R_a 3 = 85
xCell2 R_a 4 = 101
xCell2 R_a 5 = 115
xCell2 R_a 6 = 132
xCell2 R_a 7 = 142
xCell2 R_a 8 = 163
xCell2 R_a 9 = 177
xCell2 R_a 10 = 187
xCell2 R_a 11 = 187
xCell2 R_a 12 = 123
xCell2 R_a 13 = 193
xCell2 R_a 14 = 286
[R_a3x(Ra Table)]
xCell3 R_a flag = FFFF
xCell3 R_a 0 = 0
xCell3 R_a 1 = 0
xCell3 R_a 2 = 0
xCell3 R_a 3 = 0
xCell3 R_a 4 = 0
xCell3 R_a 5 = 0
xCell3 R_a 6 = 0
xCell3 R_a 7 = 0
xCell3 R_a 8 = 0
xCell3 R_a 9 = 0
xCell3 R_a 10 = 0
xCell3 R_a 11 = 0
xCell3 R_a 12 = 0
xCell3 R_a 13 = 0
xCell3 R_a 14 = 0

[Device Status Data(PF Status)]
PF Flags 1 = 0000
Fuse Flag = 0000
PF Voltage = 0
PF C4 Voltage = 0
PF C3 Voltage = 0
PF C2 Voltage = 0
PF C1 Voltage = 0
PF Current = 0
PF Temperature = 0
PF Batt Stat = 0000
PF RC-mAh = 0
PF RC-10mWh = 0
PF Chg Status = 0000
PF Safety Status = 0000
PF Flags 2 = 0000
[AFE Regs(PF Status)]
AFE Status = 00
AFE Output = 00
AFE State = 00
AFE Function = 00
AFE Cell Select = 00
AFE OLV = 00
AFE OLT = 00
AFE SCC = 00
AFE SCD = 00

[Data(Calibration)]
CC Gain = 0.9351
CC Delta = 278908.75
Ref Voltage = 2451.9
AFE Corr = 1288
AFE Pack Gain = 30625
CC Offset = -9564
Board Offset = 0
Int Temp Offset = -21
Ext1 Temp Offset = 0
Ext2 Temp Offset = 0
[Config(Calibration)]
CC Current = 0
Voltage Signal = 0
Temp Signal = 298.2
CC Offset Time = 250
ADC Offset Time = 32
CC Gain Time = 250
Voltage Time = 1984
Temperature Time = 32
Cal Mode Timeout = 38400
[Temp Model(Calibration)]
Ext Coef 1 = -28285
Ext Coef 2 = 20848
Ext Coef 3 = -7537
Ext Coef 4 = 4012
Ext Min AD = 0
Ext Max Temp = 4012
Int Coef 1 = 0
Int Coef 2 = 0
Int Coef 3 = -11136
Int Coef 4 = 5754
Int Min AD = 0
Int Max Temp = 5754
[Current(Calibration)]
Filter = 239
Deadband = 3
CC Deadband = 34
CC Max Deadband = 5
CC Deadband Sample = 256
CC Max Offset Sample = 64

0 Onyx Ahiakwo over 8 years ago in reply to Joe Brewer

TI__Guru* 76230 points

what about the log file showing this problem
thanks
Onyx

0 Joe Brewer over 8 years ago in reply to Onyx Ahiakwo

Prodigy 50 points

I was not logging using the TI software so I don't have a log file. We did log data but it is in a different format and I don't think it is going to give you all the information you want.

Power management

Power management forum

BQ20Z80A-V110: absolute capacity and remaining capacity stop decrementing at ~20%SOC