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BQ40Z50-R2: State of health low

sami josi
Prodigy 70 points
Part Number: BQ40Z50-R2
Other Parts Discussed in Thread: BQ40Z50, BQSTUDIO

Hi

I am having a problem with my batteries because the state of health has got dramatically low, as low as 4% for reasons I haven't understood yet. I am using a Bq40Z50 R2 with a custom made board. The batteries have been working fine until recently.

Things to note

  1. During creating Golden file we didn't follow the final step which is "Before saving the Golden File, set Update Status to 02 to disable IT gauging, set the Qmax Cycle Count to 0, and set the Cycle Count to 0. For a pack side gauge, this ensures that when the pack is assembled and gauging and lifetime data is enabled, the cycle counts start from 0." Update status remains 06. we still need to update impedance on field.  does it affect our problem?
  2. The battery delivers high current up to 30 A for 100 ms during use. does this high discharge spike affect our problem?
  3. Our battery and charger are designed to 8.2 V(4.1V per cell)  Full charge. Even though two 4.2 V  cells in series are used.
  4.  Lifetimes seems not to be updated.
  5. Ra Table values have changed a lot during usage period (eg. R_a 14 value  is 32767 )
  6. SRP and SRN pins are connected to  capacitors with values 100nF 
  7. 1488.log 
    Mon Mar 06 13:07:36 CET 2023

Device Name = bq40z50R2
Firmware Version = V2_11_BLD0052

Design Capacity = 2500
Design Voltage = 7260
Specification Info = 0x0031
Manufacturer Date = 2021-2-2
Serial Number = 0x1116
Manufacturer Name = Texas Instruments
Device Name = bq40z50
Device Chemistry = LION

Sample,DateTime,ElapsedTime,ManufAccess,RemCapAlarm,RemTimeAlarm,BattMode,@Rate(@),@TimeFull,@TimeEmpty,@RateOK,Temperature,Voltage,Current,AvgCurr,MaxErr,RSOC,ASOC,RemCap,FullChgCap,RunTimeEmty,AvgTimeEmty,AvgTimeFull,ChgCurr,ChgVolt,BattStat,CycleCnt,MaxTurboPwr,SusTurboPwr,MaxTurboCurr,SusTurboCurr,SoH,OpStatA,OpStatB,TempRange,ChgStat,GaugeStat,ITStat,MfgStat,SafetyAlertAB,SafetyStatAB,SafetyAlertCD,SafetyStatCD,PFAlertAB,PFStatAB,PFAlertCD,PFStatCD,CellVolt1,CellVolt2,CellVolt3,CellVolt4,vBAT,vPACK,CellCurr1,CellCurr2,CellCurr3,CellCurr4,CellPower1,CellPower2,CellPower3,CellPower4,Power,AvgPow,IntTemp,TS1Temp,TS2Temp,TS3Temp,TS4Temp,CellTemp,FETTemp,GaugeTemp,FltRemQ,FltRemE,FltFullChgQ,FltFullChgE,NoLoadRemCap,TrueRemQ,TrueRemE,InitialQ,InitialE,TrueFullChgQ,TrueFullChgE,T_sim,T_ambient,RaScale1,RaScale2,RaScale3,RaScale4,CompRes1,CompRes2,CompRes3,CompRes4,PackGrid,LStatus,CellGrid1,CellGrid2,CellGrid3,CellGrid4,StateTime,DOD0_1,DOD0_2,DOD0_3,DOD0_4,DOD0 Passed Q,DOD0 Passed E,DOD0 Time,DODEOC_1,DODEOC_2,DODEOC_3,DODEOC_4,QMax1,QMax2,QMax3,QMax4,QMaxDOD0_1,QMaxDOD0_2,QMaxDOD0_3,QMaxDOD0_4,QMaxPassedQ,QMaxTime,Tk,Ta,RawDOD_1,RawDOD_2,RawDOD_3,RawDOD_4,CBTime1,CBTime2,CBTime3,CBTime4,CBDOD_1,CBDOD_2,CBDOD_3,CBDOD_4,CBTotalDODChg,SOH_FC_Q,SOH_FC_E,LogRowTime(ms),LogStatus
1,2023-03-06 13:07:40,4.008,0x6180,300,10,0x6001,0,65535,65535,1,21.2,7861,0,0,9,100,0,0,0,65535,65535,65535,0,0,0x4AE0,24,-620,-620,-1033,-1033,4,0x6180,0x0000,0x08,0x0044,0x5A,0x0319,0x0018,0x0000,0x0000,0x0040,0x0000,0x0000,0x0000,0x0000,0x0000,3926,3931,0,0,7858,5,0,0,0,0,0,0,0,0,0,0,22.2,21.2,196.4,194.9,196.4,21.2,22.2,21.2,99,67,0,0,1910,99,67,-82,-55,0,0,19.9,21.2,1000,1000,0,0,261,193,0,0,2,14,0,0,0,0,6497750,4111,4015,0,0,0,0,79,6688,6760,0,0,2560,2530,0,0,1501,1462,0,0,-148,29073,10.0,18000,4128,4032,0,0,0,0,0,0,1248,1184,0,0,23104,92,61,1101,SUCCESS
2,2023-03-06 13:07:44,8.008,0x6180,300,10,0x6001,0,65535,65535,1,21.2,7861,0,0,9,100,0,0,0,65535,65535,65535,0,0,0x4AE0,24,-620,-620,-1033,-1033,4,0x6180,0x0000,0x08,0x0044,0x5A,0x0319,0x0018,0x0000,0x0000,0x0040,0x0000,0x0000,0x0000,0x0000,0x0000,3926,3931,0,0,7859,3,0,0,0,0,0,0,0,0,0,0,22.2,21.2,196.4,197.4,196.4,21.2,22.2,21.2,99,67,0,0,1910,99,67,-82,-55,0,0,19.9,21.2,1000,1000,0,0,261,193,0,0,2,14,0,0,0,0,6497754,4111,4015,0,0,0,0,79,6688,6760,0,0,2560,2530,0,0,1501,1462,0,0,-148,29073,10.0,18000,4128,4032,0,0,0,0,0,0,1248,1184,0,0,23104,92,61,1101,SUCCESS
3,2023-03-06 13:07:48,12.015,0x6180,300,10,0x6001,0,65535,65535,1,21.2,7860,3,0,9,100,0,0,0,65535,65535,65535,0,0,0x4AE0,24,-620,-620,-1033,-1033,4,0x6180,0x0000,0x08,0x0044,0x5A,0x0319,0x0018,0x0000,0x0000,0x0040,0x0000,0x0000,0x0000,0x0000,0x0000,3926,3931,0,0,7858,5,0,0,0,0,0,0,0,0,0,0,22.2,21.2,195.3,196.5,196.5,21.2,22.2,21.2,99,67,0,0,1910,99,67,-82,-55,0,0,19.9,21.2,1000,1000,0,0,261,193,0,0,2,14,0,0,0,0,6497758,4111,4015,0,0,0,0,79,6688,6760,0,0,2560,2530,0,0,1501,1462,0,0,-148,29073,10.0,18000,4128,4032,0,0,0,0,0,0,1248,1184,0,0,23104,92,61,1125,SUCCESS
4,2023-03-06 13:07:52,16.030,0x6180,300,10,0x6001,0,65535,65535,1,21.2,7860,0,0,9,100,0,0,0,65535,65535,65535,0,0,0x4AE0,24,-620,-620,-1033,-1033,4,0x6180,0x0000,0x08,0x0044,0x5A,0x0319,0x0018,0x0000,0x0000,0x0040,0x0000,0x0000,0x0000,0x0000,0x0000,3926,3931,0,0,7858,6,0,0,0,0,0,0,0,0,0,0,22.2,21.2,196.5,196.5,196.4,21.2,22.2,21.2,99,67,0,0,1910,99,67,-82,-55,0,0,19.9,21.2,1000,1000,0,0,261,193,0,0,2,14,0,0,0,0,6497762,4111,4015,0,0,0,0,79,6688,6760,0,0,2560,2530,0,0,1501,1462,0,0,-148,29073,10.0,18000,4128,4032,0,0,0,0,0,0,1248,1184,0,0,23104,92,61,1141,SUCCESS
5,2023-03-06 13:07:56,20.044,0x6180,300,10,0x6001,0,65535,65535,1,21.2,7856,0,0,9,100,0,0,0,65535,65535,65535,0,0,0x4AE0,24,-620,-620,-1033,-1033,4,0x6180,0x0000,0x08,0x0044,0x5A,0x0319,0x0018,0x0000,0x0000,0x0040,0x0000,0x0000,0x0000,0x0000,0x0000,3926,3931,0,0,7858,3,0,0,0,0,0,0,0,0,0,0,22.2,21.2,196.5,195.4,196.5,21.2,22.2,21.2,99,67,0,0,1910,99,67,-82,-55,0,0,19.9,21.2,1000,1000,0,0,261,193,0,0,2,14,0,0,0,0,6497766,4111,4015,0,0,0,0,79,6688,6760,0,0,2560,2530,0,0,1501,1462,0,0,-148,29073,10.0,18000,4128,4032,0,0,0,0,0,0,1248,1184,0,0,23104,92,61,1049,SUCCESS
6,2023-03-06 13:08:00,24.048,0x6180,300,10,0x6001,0,65535,65535,1,21.2,7856,0,0,9,100,0,0,0,65535,65535,65535,0,0,0x4AE0,24,-620,-620,-1033,-1033,4,0x6180,0x0000,0x08,0x0044,0x5A,0x0319,0x0018,0x0000,0x0000,0x0040,0x0000,0x0000,0x0000,0x0000,0x0000,3926,3931,0,0,7857,4,0,0,0,0,0,0,0,0,0,0,22.2,21.2,195.4,195.3,196.4,21.2,22.2,21.2,99,67,0,0,1910,99,67,-82,-55,0,0,19.9,21.2,1000,1000,0,0,261,193,0,0,2,14,0,0,0,0,6497769,4111,4015,0,0,0,0,79,6688,6760,0,0,2560,2530,0,0,1501,1462,0,0,-148,29073,10.0,18000,4128,4032,0,0,0,0,0,0,1248,1184,0,0,23104,92,61,1045,SUCCESS
7,2023-03-06 13:08:04,28.052,0x6180,300,10,0x6001,0,65535,65535,1,21.2,7856,0,0,9,100,0,0,0,65535,65535,65535,0,0,0x4AE0,24,-620,-620,-1033,-1033,4,0x6180,0x0000,0x08,0x0044,0x5A,0x0319,0x0018,0x0000,0x0000,0x0040,0x0000,0x0000,0x0000,0x0000,0x0000,3926,3931,0,0,7858,7,15,10,0,0,6,4,0,0,2,0,22.2,21.2,195.6,196.3,195.9,21.2,22.2,21.2,99,67,0,0,1910,99,67,-82,-55,0,0,19.9,21.2,1000,1000,0,0,261,193,0,0,2,14,0,0,0,0,6497773,4111,4015,0,0,0,0,79,6688,6760,0,0,2560,2530,0,0,1501,1462,0,0,-148,29073,10.0,18000,4128,4032,0,0,0,0,0,0,1248,1184,0,0,23104,92,61,1071,SUCCESS
8,2023-03-06 13:08:08,32.058,0x6180,300,10,0x6001,0,65535,65535,1,21.2,7856,0,0,9,100,0,0,0,65535,65535,65535,0,0,0x4AE0,24,-620,-620,-1033,-1033,4,0x6180,0x0000,0x08,0x0044,0x5A,0x0319,0x0018,0x0000,0x0000,0x0040,0x0000,0x0000,0x0000,0x0000,0x0000,3927,3931,0,0,7858,4,14,15,0,0,5,6,0,0,2,0,22.2,21.2,196.5,196.5,196.5,21.2,22.2,21.2,99,67,0,0,1910,99,67,-82,-55,0,0,19.9,21.2,1000,1000,0,0,261,193,0,0,2,14,0,0,0,0,6497777,4111,4015,0,0,0,0,79,6688,6760,0,0,2560,2530,0,0,1501,1462,0,0,-148,29073,10.0,18000,4128,4032,0,0,0,0,0,0,1248,1184,0,0,23104,92,61,1082,SUCCESS
9,2023-03-06 13:08:12,36.060,0x6180,300,10,0x6001,0,65535,65535,1,21.2,7856,0,0,9,100,0,0,0,65535,65535,65535,0,0,0x4AE0,24,-620,-620,-1033,-1033,4,0x6180,0x0000,0x08,0x0044,0x5A,0x0319,0x0018,0x0000,0x0000,0x0040,0x0000,0x0000,0x0000,0x0000,0x0000,3927,3931,0,0,7858,7,0,0,0,0,0,0,0,0,0,0,22.1,21.2,196.4,196.4,196.5,21.2,22.1,21.2,99,67,0,0,1910,99,67,-82,-55,0,0,19.9,21.2,1000,1000,0,0,261,193,0,0,2,14,0,0,0,0,6497781,4111,4015,0,0,0,0,79,6688,6760,0,0,2560,2530,0,0,1501,1462,0,0,-148,29073,10.0,18000,4128,4032,0,0,0,0,0,0,1248,1184,0,0,23104,92,61,1110,SUCCESS
10,2023-03-06 13:08:16,40.064,0x6180,300,10,0x6001,0,65535,65535,1,21.2,7856,0,0,9,100,0,0,0,65535,65535,65535,0,0,0x4AE0,24,-620,-620,-1033,-1033,4,0x6180,0x0000,0x08,0x0044,0x5A,0x0319,0x0018,0x0000,0x0000,0x0040,0x0000,0x0000,0x0000,0x0000,0x0000,3927,3931,0,0,7859,5,0,0,0,0,0,0,0,0,0,0,22.2,21.2,197.1,196.4,196.5,21.2,22.2,21.2,99,67,0,0,1910,99,67,-82,-55,0,0,19.9,21.2,1000,1000,0,0,261,193,0,0,2,14,0,0,0,0,6497785,4111,4015,0,0,0,0,79,6688,6760,0,0,2560,2530,0,0,1501,1462,0,0,-148,29073,10.0,18000,4128,4032,0,0,0,0,0,0,1248,1184,0,0,23104,92,61,1123,SUCCESS
11,2023-03-06 13:08:20,44.067,0x6180,300,10,0x6001,0,65535,65535,1,21.2,7856,0,0,9,100,0,0,0,65535,65535,65535,0,0,0x4AE0,24,-620,-620,-1033,-1033,4,0x6180,0x0000,0x08,0x0044,0x5A,0x0319,0x0018,0x0000,0x0000,0x0040,0x0000,0x0000,0x0000,0x0000,0x0000,3927,3931,0,0,7858,5,0,0,0,0,0,0,0,0,0,0,22.2,21.2,195.6,196.4,196.5,21.2,22.2,21.2,99,67,0,0,1910,99,67,-82,-55,0,0,19.9,21.2,1000,1000,0,0,261,193,0,0,2,14,0,0,0,0,6497789,4111,4015,0,0,0,0,79,6688,6760,0,0,2560,2530,0,0,1501,1462,0,0,-148,29073,10.0,18000,4128,4032,0,0,0,0,0,0,1248,1184,0,0,23104,92,61,1103,SUCCESS
12,2023-03-06 13:08:24,48.082,0x6180,300,10,0x6001,0,65535,65535,1,21.2,7856,0,0,9,100,0,0,0,65535,65535,65535,0,0,0x4AE0,24,-620,-620,-1033,-1033,4,0x6180,0x0000,0x08,0x0044,0x5A,0x0319,0x0018,0x0000,0x0000,0x0040,0x0000,0x0000,0x0000,0x0000,0x0000,3927,3931,0,0,7857,6,0,0,0,0,0,0,0,0,0,0,22.2,21.2,196.4,195.6,196.4,21.2,22.2,21.2,99,67,0,0,1910,99,67,-82,-55,0,0,19.9,21.2,1000,1000,0,0,261,193,0,0,2,14,0,0,0,0,6497793,4111,4015,0,0,0,0,79,6688,6760,0,0,2560,2530,0,0,1501,1462,0,0,-148,29073,10.0,18000,4128,4032,0,0,0,0,0,0,1248,1184,0,0,23104,92,61,1057,SUCCESS
13,2023-03-06 13:08:28,52.094,0x6180,300,10,0x6001,0,65535,65535,1,21.2,7856,0,0,9,100,0,0,0,65535,65535,65535,0,0,0x4AE0,24,-620,-620,-1033,-1033,4,0x6180,0x0000,0x08,0x0044,0x5A,0x0319,0x0018,0x0000,0x0000,0x0040,0x0000,0x0000,0x0000,0x0000,0x0000,3927,3932,0,0,7859,5,8,12,0,0,3,5,0,0,2,0,22.2,21.2,196.3,196.4,196.4,21.2,22.2,21.2,99,67,0,0,1910,99,67,-82,-55,0,0,19.9,21.2,1000,1000,0,0,261,193,0,0,2,14,0,0,0,0,6497797,4111,4015,0,0,0,0,79,6688,6760,0,0,2560,2530,0,0,1501,1462,0,0,-148,29073,10.0,18000,4128,4032,0,0,0,0,0,0,1248,1184,0,0,23104,92,61,1108,SUCCESS
14,2023-03-06 13:08:32,56.107,0x6180,300,10,0x6001,0,65535,65535,1,21.2,7856,3,0,9,100,0,0,0,65535,65535,65535,0,0,0x4AE0,24,-620,-620,-1033,-1033,4,0x6180,0x0000,0x08,0x0044,0x5A,0x0319,0x0018,0x0000,0x0000,0x0040,0x0000,0x0000,0x0000,0x0000,0x0000,3927,3931,0,0,7859,4,0,0,0,0,0,0,0,0,0,0,22.2,21.2,196.5,196.4,195.9,21.2,22.2,21.2,99,67,0,0,1910,99,67,-82,-55,0,0,19.9,21.2,1000,1000,0,0,261,193,0,0,2,14,0,0,0,0,6497801,4111,4015,0,0,0,0,79,6688,6760,0,0,2560,2530,0,0,1501,1462,0,0,-148,29073,10.0,18000,4128,4032,0,0,0,0,0,0,1248,1184,0,0,23104,92,61,1125,SUCCESS
15,2023-03-06 13:08:36,60.118,0x6180,300,10,0x6001,0,65535,65535,1,21.2,7856,0,0,9,100,0,0,0,65535,65535,65535,0,0,0x4AE0,24,-620,-620,-1033,-1033,4,0x6180,0x0000,0x08,0x0044,0x5A,0x0319,0x0018,0x0000,0x0000,0x0040,0x0000,0x0000,0x0000,0x0000,0x0000,3926,3931,0,0,7858,6,0,0,0,0,0,0,0,0,0,0,22.2,21.2,195.7,196.4,196.5,21.2,22.2,21.2,99,67,0,0,1910,99,67,-82,-55,0,0,19.9,21.2,1000,1000,0,0,261,193,0,0,2,14,0,0,0,0,6497805,4111,4015,0,0,0,0,79,6688,6760,0,0,2560,2530,0,0,1501,1462,0,0,-148,29073,10.0,18000,4128,4032,0,0,0,0,0,0,1248,1184,0,0,23104,92,61,1036,SUCCESS
16,2023-03-06 13:08:40,64.133,0x6180,300,10,0x6001,0,65535,65535,1,21.2,7856,0,0,9,100,0,0,0,65535,65535,65535,0,0,0x4AE0,24,-620,-620,-1033,-1033,4,0x6180,0x0000,0x08,0x0044,0x5A,0x0319,0x0018,0x0000,0x0000,0x0040,0x0000,0x0000,0x0000,0x0000,0x0000,3930,3931,0,0,7858,5,0,0,0,0,0,0,0,0,0,0,22.3,21.2,195.9,196.4,196.5,21.2,22.3,21.2,99,67,0,0,1910,99,67,-82,-55,0,0,19.9,21.2,1000,1000,0,0,261,193,0,0,2,14,0,0,0,0,6497809,4111,4015,0,0,0,0,79,6688,6760,0,0,2560,2530,0,0,1501,1462,0,0,-148,29073,10.0,18000,4128,4032,0,0,0,0,0,0,1248,1184,0,0,23104,92,61,1068,SUCCESS
17,2023-03-06 13:08:44,68.145,0x6180,300,10,0x6001,0,65535,65535,1,21.2,7856,0,0,9,100,0,0,0,65535,65535,65535,0,0,0x4AE0,24,-620,-620,-1033,-1033,4,0x6180,0x0000,0x08,0x0044,0x5A,0x0319,0x0018,0x0000,0x0000,0x0040,0x0000,0x0000,0x0000,0x0000,0x0000,3926,3931,0,0,7858,6,0,0,0,0,0,0,0,0,0,0,22.3,21.2,196.1,196.4,196.5,21.2,22.3,21.2,99,67,0,0,1910,99,67,-82,-55,0,0,19.9,21.2,1000,1000,0,0,261,193,0,0,2,14,0,0,0,0,6497813,4111,4015,0,0,0,0,79,6688,6760,0,0,2560,2530,0,0,1501,1462,0,0,-148,29073,10.0,18000,4128,4032,0,0,0,0,0,0,1248,1184,0,0,23104,92,61,1070,SUCCESS
18,2023-03-06 13:08:48,72.146,0x6180,300,10,0x6001,0,65535,65535,1,21.2,7856,0,0,9,100,0,0,0,65535,65535,65535,0,0,0x4AE0,24,-620,-620,-1033,-1033,4,0x6180,0x0000,0x08,0x0044,0x5A,0x0319,0x0018,0x0000,0x0000,0x0040,0x0000,0x0000,0x0000,0x0000,0x0000,3930,3931,0,0,7861,4,0,0,0,0,0,0,0,0,0,0,22.2,21.2,195.9,196.4,195.9,21.2,22.2,21.2,99,67,0,0,1910,99,67,-82,-55,0,0,19.9,21.2,1000,1000,0,0,261,193,0,0,2,14,0,0,0,0,6497817,4111,4015,0,0,0,0,79,6688,6760,0,0,2560,2530,0,0,1501,1462,0,0,-148,29073,10.0,18000,4128,4032,0,0,0,0,0,0,1248,1184,0,0,23104,92,61,1069,SUCCESS
  • 0
    TI__Guru** 102355 points

    Hello Sam,

    Please share your .gg file and a BQStudio log showing the behavior occurring if possible (or just a short log showing the SOH being very low).

    SOH is based on a constant current load that is user configurable, 25degC simulation temperature, and the Ra and Qmax data that are learned as part of the algorithm. If SOH drops very low I would suspect either your Qmax had a bad update (which shouldn't occur because it is filtered and capped at a max delta for each cycle) or the Ra table learned incorrectly. We will need more data to help further.

    Sincerely,

    Wyatt Keller

  • 0 in reply to Wyatt Keller
    Prodigy 70 points

    6465000903.log 
    Mon Mar 06 13:07:36 CET 2023

Device Name = bq40z50R2
Firmware Version = V2_11_BLD0052

Design Capacity = 2500
Design Voltage = 7260
Specification Info = 0x0031
Manufacturer Date = 2021-2-2
Serial Number = 0x1116
Manufacturer Name = Texas Instruments
Device Name = bq40z50
Device Chemistry = LION

Sample,DateTime,ElapsedTime,ManufAccess,RemCapAlarm,RemTimeAlarm,BattMode,@Rate(@),@TimeFull,@TimeEmpty,@RateOK,Temperature,Voltage,Current,AvgCurr,MaxErr,RSOC,ASOC,RemCap,FullChgCap,RunTimeEmty,AvgTimeEmty,AvgTimeFull,ChgCurr,ChgVolt,BattStat,CycleCnt,MaxTurboPwr,SusTurboPwr,MaxTurboCurr,SusTurboCurr,SoH,OpStatA,OpStatB,TempRange,ChgStat,GaugeStat,ITStat,MfgStat,SafetyAlertAB,SafetyStatAB,SafetyAlertCD,SafetyStatCD,PFAlertAB,PFStatAB,PFAlertCD,PFStatCD,CellVolt1,CellVolt2,CellVolt3,CellVolt4,vBAT,vPACK,CellCurr1,CellCurr2,CellCurr3,CellCurr4,CellPower1,CellPower2,CellPower3,CellPower4,Power,AvgPow,IntTemp,TS1Temp,TS2Temp,TS3Temp,TS4Temp,CellTemp,FETTemp,GaugeTemp,FltRemQ,FltRemE,FltFullChgQ,FltFullChgE,NoLoadRemCap,TrueRemQ,TrueRemE,InitialQ,InitialE,TrueFullChgQ,TrueFullChgE,T_sim,T_ambient,RaScale1,RaScale2,RaScale3,RaScale4,CompRes1,CompRes2,CompRes3,CompRes4,PackGrid,LStatus,CellGrid1,CellGrid2,CellGrid3,CellGrid4,StateTime,DOD0_1,DOD0_2,DOD0_3,DOD0_4,DOD0 Passed Q,DOD0 Passed E,DOD0 Time,DODEOC_1,DODEOC_2,DODEOC_3,DODEOC_4,QMax1,QMax2,QMax3,QMax4,QMaxDOD0_1,QMaxDOD0_2,QMaxDOD0_3,QMaxDOD0_4,QMaxPassedQ,QMaxTime,Tk,Ta,RawDOD_1,RawDOD_2,RawDOD_3,RawDOD_4,CBTime1,CBTime2,CBTime3,CBTime4,CBDOD_1,CBDOD_2,CBDOD_3,CBDOD_4,CBTotalDODChg,SOH_FC_Q,SOH_FC_E,LogRowTime(ms),LogStatus
1,2023-03-06 13:07:40,4.008,0x6180,300,10,0x6001,0,65535,65535,1,21.2,7861,0,0,9,100,0,0,0,65535,65535,65535,0,0,0x4AE0,24,-620,-620,-1033,-1033,4,0x6180,0x0000,0x08,0x0044,0x5A,0x0319,0x0018,0x0000,0x0000,0x0040,0x0000,0x0000,0x0000,0x0000,0x0000,3926,3931,0,0,7858,5,0,0,0,0,0,0,0,0,0,0,22.2,21.2,196.4,194.9,196.4,21.2,22.2,21.2,99,67,0,0,1910,99,67,-82,-55,0,0,19.9,21.2,1000,1000,0,0,261,193,0,0,2,14,0,0,0,0,6497750,4111,4015,0,0,0,0,79,6688,6760,0,0,2560,2530,0,0,1501,1462,0,0,-148,29073,10.0,18000,4128,4032,0,0,0,0,0,0,1248,1184,0,0,23104,92,61,1101,SUCCESS
2,2023-03-06 13:07:44,8.008,0x6180,300,10,0x6001,0,65535,65535,1,21.2,7861,0,0,9,100,0,0,0,65535,65535,65535,0,0,0x4AE0,24,-620,-620,-1033,-1033,4,0x6180,0x0000,0x08,0x0044,0x5A,0x0319,0x0018,0x0000,0x0000,0x0040,0x0000,0x0000,0x0000,0x0000,0x0000,3926,3931,0,0,7859,3,0,0,0,0,0,0,0,0,0,0,22.2,21.2,196.4,197.4,196.4,21.2,22.2,21.2,99,67,0,0,1910,99,67,-82,-55,0,0,19.9,21.2,1000,1000,0,0,261,193,0,0,2,14,0,0,0,0,6497754,4111,4015,0,0,0,0,79,6688,6760,0,0,2560,2530,0,0,1501,1462,0,0,-148,29073,10.0,18000,4128,4032,0,0,0,0,0,0,1248,1184,0,0,23104,92,61,1101,SUCCESS
3,2023-03-06 13:07:48,12.015,0x6180,300,10,0x6001,0,65535,65535,1,21.2,7860,3,0,9,100,0,0,0,65535,65535,65535,0,0,0x4AE0,24,-620,-620,-1033,-1033,4,0x6180,0x0000,0x08,0x0044,0x5A,0x0319,0x0018,0x0000,0x0000,0x0040,0x0000,0x0000,0x0000,0x0000,0x0000,3926,3931,0,0,7858,5,0,0,0,0,0,0,0,0,0,0,22.2,21.2,195.3,196.5,196.5,21.2,22.2,21.2,99,67,0,0,1910,99,67,-82,-55,0,0,19.9,21.2,1000,1000,0,0,261,193,0,0,2,14,0,0,0,0,6497758,4111,4015,0,0,0,0,79,6688,6760,0,0,2560,2530,0,0,1501,1462,0,0,-148,29073,10.0,18000,4128,4032,0,0,0,0,0,0,1248,1184,0,0,23104,92,61,1125,SUCCESS
4,2023-03-06 13:07:52,16.030,0x6180,300,10,0x6001,0,65535,65535,1,21.2,7860,0,0,9,100,0,0,0,65535,65535,65535,0,0,0x4AE0,24,-620,-620,-1033,-1033,4,0x6180,0x0000,0x08,0x0044,0x5A,0x0319,0x0018,0x0000,0x0000,0x0040,0x0000,0x0000,0x0000,0x0000,0x0000,3926,3931,0,0,7858,6,0,0,0,0,0,0,0,0,0,0,22.2,21.2,196.5,196.5,196.4,21.2,22.2,21.2,99,67,0,0,1910,99,67,-82,-55,0,0,19.9,21.2,1000,1000,0,0,261,193,0,0,2,14,0,0,0,0,6497762,4111,4015,0,0,0,0,79,6688,6760,0,0,2560,2530,0,0,1501,1462,0,0,-148,29073,10.0,18000,4128,4032,0,0,0,0,0,0,1248,1184,0,0,23104,92,61,1141,SUCCESS
5,2023-03-06 13:07:56,20.044,0x6180,300,10,0x6001,0,65535,65535,1,21.2,7856,0,0,9,100,0,0,0,65535,65535,65535,0,0,0x4AE0,24,-620,-620,-1033,-1033,4,0x6180,0x0000,0x08,0x0044,0x5A,0x0319,0x0018,0x0000,0x0000,0x0040,0x0000,0x0000,0x0000,0x0000,0x0000,3926,3931,0,0,7858,3,0,0,0,0,0,0,0,0,0,0,22.2,21.2,196.5,195.4,196.5,21.2,22.2,21.2,99,67,0,0,1910,99,67,-82,-55,0,0,19.9,21.2,1000,1000,0,0,261,193,0,0,2,14,0,0,0,0,6497766,4111,4015,0,0,0,0,79,6688,6760,0,0,2560,2530,0,0,1501,1462,0,0,-148,29073,10.0,18000,4128,4032,0,0,0,0,0,0,1248,1184,0,0,23104,92,61,1049,SUCCESS
6,2023-03-06 13:08:00,24.048,0x6180,300,10,0x6001,0,65535,65535,1,21.2,7856,0,0,9,100,0,0,0,65535,65535,65535,0,0,0x4AE0,24,-620,-620,-1033,-1033,4,0x6180,0x0000,0x08,0x0044,0x5A,0x0319,0x0018,0x0000,0x0000,0x0040,0x0000,0x0000,0x0000,0x0000,0x0000,3926,3931,0,0,7857,4,0,0,0,0,0,0,0,0,0,0,22.2,21.2,195.4,195.3,196.4,21.2,22.2,21.2,99,67,0,0,1910,99,67,-82,-55,0,0,19.9,21.2,1000,1000,0,0,261,193,0,0,2,14,0,0,0,0,6497769,4111,4015,0,0,0,0,79,6688,6760,0,0,2560,2530,0,0,1501,1462,0,0,-148,29073,10.0,18000,4128,4032,0,0,0,0,0,0,1248,1184,0,0,23104,92,61,1045,SUCCESS
7,2023-03-06 13:08:04,28.052,0x6180,300,10,0x6001,0,65535,65535,1,21.2,7856,0,0,9,100,0,0,0,65535,65535,65535,0,0,0x4AE0,24,-620,-620,-1033,-1033,4,0x6180,0x0000,0x08,0x0044,0x5A,0x0319,0x0018,0x0000,0x0000,0x0040,0x0000,0x0000,0x0000,0x0000,0x0000,3926,3931,0,0,7858,7,15,10,0,0,6,4,0,0,2,0,22.2,21.2,195.6,196.3,195.9,21.2,22.2,21.2,99,67,0,0,1910,99,67,-82,-55,0,0,19.9,21.2,1000,1000,0,0,261,193,0,0,2,14,0,0,0,0,6497773,4111,4015,0,0,0,0,79,6688,6760,0,0,2560,2530,0,0,1501,1462,0,0,-148,29073,10.0,18000,4128,4032,0,0,0,0,0,0,1248,1184,0,0,23104,92,61,1071,SUCCESS
8,2023-03-06 13:08:08,32.058,0x6180,300,10,0x6001,0,65535,65535,1,21.2,7856,0,0,9,100,0,0,0,65535,65535,65535,0,0,0x4AE0,24,-620,-620,-1033,-1033,4,0x6180,0x0000,0x08,0x0044,0x5A,0x0319,0x0018,0x0000,0x0000,0x0040,0x0000,0x0000,0x0000,0x0000,0x0000,3927,3931,0,0,7858,4,14,15,0,0,5,6,0,0,2,0,22.2,21.2,196.5,196.5,196.5,21.2,22.2,21.2,99,67,0,0,1910,99,67,-82,-55,0,0,19.9,21.2,1000,1000,0,0,261,193,0,0,2,14,0,0,0,0,6497777,4111,4015,0,0,0,0,79,6688,6760,0,0,2560,2530,0,0,1501,1462,0,0,-148,29073,10.0,18000,4128,4032,0,0,0,0,0,0,1248,1184,0,0,23104,92,61,1082,SUCCESS
9,2023-03-06 13:08:12,36.060,0x6180,300,10,0x6001,0,65535,65535,1,21.2,7856,0,0,9,100,0,0,0,65535,65535,65535,0,0,0x4AE0,24,-620,-620,-1033,-1033,4,0x6180,0x0000,0x08,0x0044,0x5A,0x0319,0x0018,0x0000,0x0000,0x0040,0x0000,0x0000,0x0000,0x0000,0x0000,3927,3931,0,0,7858,7,0,0,0,0,0,0,0,0,0,0,22.1,21.2,196.4,196.4,196.5,21.2,22.1,21.2,99,67,0,0,1910,99,67,-82,-55,0,0,19.9,21.2,1000,1000,0,0,261,193,0,0,2,14,0,0,0,0,6497781,4111,4015,0,0,0,0,79,6688,6760,0,0,2560,2530,0,0,1501,1462,0,0,-148,29073,10.0,18000,4128,4032,0,0,0,0,0,0,1248,1184,0,0,23104,92,61,1110,SUCCESS
10,2023-03-06 13:08:16,40.064,0x6180,300,10,0x6001,0,65535,65535,1,21.2,7856,0,0,9,100,0,0,0,65535,65535,65535,0,0,0x4AE0,24,-620,-620,-1033,-1033,4,0x6180,0x0000,0x08,0x0044,0x5A,0x0319,0x0018,0x0000,0x0000,0x0040,0x0000,0x0000,0x0000,0x0000,0x0000,3927,3931,0,0,7859,5,0,0,0,0,0,0,0,0,0,0,22.2,21.2,197.1,196.4,196.5,21.2,22.2,21.2,99,67,0,0,1910,99,67,-82,-55,0,0,19.9,21.2,1000,1000,0,0,261,193,0,0,2,14,0,0,0,0,6497785,4111,4015,0,0,0,0,79,6688,6760,0,0,2560,2530,0,0,1501,1462,0,0,-148,29073,10.0,18000,4128,4032,0,0,0,0,0,0,1248,1184,0,0,23104,92,61,1123,SUCCESS
11,2023-03-06 13:08:20,44.067,0x6180,300,10,0x6001,0,65535,65535,1,21.2,7856,0,0,9,100,0,0,0,65535,65535,65535,0,0,0x4AE0,24,-620,-620,-1033,-1033,4,0x6180,0x0000,0x08,0x0044,0x5A,0x0319,0x0018,0x0000,0x0000,0x0040,0x0000,0x0000,0x0000,0x0000,0x0000,3927,3931,0,0,7858,5,0,0,0,0,0,0,0,0,0,0,22.2,21.2,195.6,196.4,196.5,21.2,22.2,21.2,99,67,0,0,1910,99,67,-82,-55,0,0,19.9,21.2,1000,1000,0,0,261,193,0,0,2,14,0,0,0,0,6497789,4111,4015,0,0,0,0,79,6688,6760,0,0,2560,2530,0,0,1501,1462,0,0,-148,29073,10.0,18000,4128,4032,0,0,0,0,0,0,1248,1184,0,0,23104,92,61,1103,SUCCESS
12,2023-03-06 13:08:24,48.082,0x6180,300,10,0x6001,0,65535,65535,1,21.2,7856,0,0,9,100,0,0,0,65535,65535,65535,0,0,0x4AE0,24,-620,-620,-1033,-1033,4,0x6180,0x0000,0x08,0x0044,0x5A,0x0319,0x0018,0x0000,0x0000,0x0040,0x0000,0x0000,0x0000,0x0000,0x0000,3927,3931,0,0,7857,6,0,0,0,0,0,0,0,0,0,0,22.2,21.2,196.4,195.6,196.4,21.2,22.2,21.2,99,67,0,0,1910,99,67,-82,-55,0,0,19.9,21.2,1000,1000,0,0,261,193,0,0,2,14,0,0,0,0,6497793,4111,4015,0,0,0,0,79,6688,6760,0,0,2560,2530,0,0,1501,1462,0,0,-148,29073,10.0,18000,4128,4032,0,0,0,0,0,0,1248,1184,0,0,23104,92,61,1057,SUCCESS
13,2023-03-06 13:08:28,52.094,0x6180,300,10,0x6001,0,65535,65535,1,21.2,7856,0,0,9,100,0,0,0,65535,65535,65535,0,0,0x4AE0,24,-620,-620,-1033,-1033,4,0x6180,0x0000,0x08,0x0044,0x5A,0x0319,0x0018,0x0000,0x0000,0x0040,0x0000,0x0000,0x0000,0x0000,0x0000,3927,3932,0,0,7859,5,8,12,0,0,3,5,0,0,2,0,22.2,21.2,196.3,196.4,196.4,21.2,22.2,21.2,99,67,0,0,1910,99,67,-82,-55,0,0,19.9,21.2,1000,1000,0,0,261,193,0,0,2,14,0,0,0,0,6497797,4111,4015,0,0,0,0,79,6688,6760,0,0,2560,2530,0,0,1501,1462,0,0,-148,29073,10.0,18000,4128,4032,0,0,0,0,0,0,1248,1184,0,0,23104,92,61,1108,SUCCESS
14,2023-03-06 13:08:32,56.107,0x6180,300,10,0x6001,0,65535,65535,1,21.2,7856,3,0,9,100,0,0,0,65535,65535,65535,0,0,0x4AE0,24,-620,-620,-1033,-1033,4,0x6180,0x0000,0x08,0x0044,0x5A,0x0319,0x0018,0x0000,0x0000,0x0040,0x0000,0x0000,0x0000,0x0000,0x0000,3927,3931,0,0,7859,4,0,0,0,0,0,0,0,0,0,0,22.2,21.2,196.5,196.4,195.9,21.2,22.2,21.2,99,67,0,0,1910,99,67,-82,-55,0,0,19.9,21.2,1000,1000,0,0,261,193,0,0,2,14,0,0,0,0,6497801,4111,4015,0,0,0,0,79,6688,6760,0,0,2560,2530,0,0,1501,1462,0,0,-148,29073,10.0,18000,4128,4032,0,0,0,0,0,0,1248,1184,0,0,23104,92,61,1125,SUCCESS
15,2023-03-06 13:08:36,60.118,0x6180,300,10,0x6001,0,65535,65535,1,21.2,7856,0,0,9,100,0,0,0,65535,65535,65535,0,0,0x4AE0,24,-620,-620,-1033,-1033,4,0x6180,0x0000,0x08,0x0044,0x5A,0x0319,0x0018,0x0000,0x0000,0x0040,0x0000,0x0000,0x0000,0x0000,0x0000,3926,3931,0,0,7858,6,0,0,0,0,0,0,0,0,0,0,22.2,21.2,195.7,196.4,196.5,21.2,22.2,21.2,99,67,0,0,1910,99,67,-82,-55,0,0,19.9,21.2,1000,1000,0,0,261,193,0,0,2,14,0,0,0,0,6497805,4111,4015,0,0,0,0,79,6688,6760,0,0,2560,2530,0,0,1501,1462,0,0,-148,29073,10.0,18000,4128,4032,0,0,0,0,0,0,1248,1184,0,0,23104,92,61,1036,SUCCESS
16,2023-03-06 13:08:40,64.133,0x6180,300,10,0x6001,0,65535,65535,1,21.2,7856,0,0,9,100,0,0,0,65535,65535,65535,0,0,0x4AE0,24,-620,-620,-1033,-1033,4,0x6180,0x0000,0x08,0x0044,0x5A,0x0319,0x0018,0x0000,0x0000,0x0040,0x0000,0x0000,0x0000,0x0000,0x0000,3930,3931,0,0,7858,5,0,0,0,0,0,0,0,0,0,0,22.3,21.2,195.9,196.4,196.5,21.2,22.3,21.2,99,67,0,0,1910,99,67,-82,-55,0,0,19.9,21.2,1000,1000,0,0,261,193,0,0,2,14,0,0,0,0,6497809,4111,4015,0,0,0,0,79,6688,6760,0,0,2560,2530,0,0,1501,1462,0,0,-148,29073,10.0,18000,4128,4032,0,0,0,0,0,0,1248,1184,0,0,23104,92,61,1068,SUCCESS
17,2023-03-06 13:08:44,68.145,0x6180,300,10,0x6001,0,65535,65535,1,21.2,7856,0,0,9,100,0,0,0,65535,65535,65535,0,0,0x4AE0,24,-620,-620,-1033,-1033,4,0x6180,0x0000,0x08,0x0044,0x5A,0x0319,0x0018,0x0000,0x0000,0x0040,0x0000,0x0000,0x0000,0x0000,0x0000,3926,3931,0,0,7858,6,0,0,0,0,0,0,0,0,0,0,22.3,21.2,196.1,196.4,196.5,21.2,22.3,21.2,99,67,0,0,1910,99,67,-82,-55,0,0,19.9,21.2,1000,1000,0,0,261,193,0,0,2,14,0,0,0,0,6497813,4111,4015,0,0,0,0,79,6688,6760,0,0,2560,2530,0,0,1501,1462,0,0,-148,29073,10.0,18000,4128,4032,0,0,0,0,0,0,1248,1184,0,0,23104,92,61,1070,SUCCESS
18,2023-03-06 13:08:48,72.146,0x6180,300,10,0x6001,0,65535,65535,1,21.2,7856,0,0,9,100,0,0,0,65535,65535,65535,0,0,0x4AE0,24,-620,-620,-1033,-1033,4,0x6180,0x0000,0x08,0x0044,0x5A,0x0319,0x0018,0x0000,0x0000,0x0040,0x0000,0x0000,0x0000,0x0000,0x0000,3930,3931,0,0,7861,4,0,0,0,0,0,0,0,0,0,0,22.2,21.2,195.9,196.4,195.9,21.2,22.2,21.2,99,67,0,0,1910,99,67,-82,-55,0,0,19.9,21.2,1000,1000,0,0,261,193,0,0,2,14,0,0,0,0,6497817,4111,4015,0,0,0,0,79,6688,6760,0,0,2560,2530,0,0,1501,1462,0,0,-148,29073,10.0,18000,4128,4032,0,0,0,0,0,0,1248,1184,0,0,23104,92,61,1069,SUCCESS

  • 0 in reply to Wyatt Keller
    Prodigy 70 points

    hi Wyatt i have shared the files. but i wanted to add that the charger charges to 8.2V wich is less than the battery full volt (wich is 8.4 or 4.2 per cell). can this affect the Qmax value.

  • 0 in reply to sami josi
    TI__Guru** 102355 points

    Hello Sami,

    We are not able to access external drive links, please attach the .gg file directly if possible.

    From your log it looks like a lot of strange things are occurring, your DOD at EOC is way too high (over 6000) I would expect it to be closer to 1000 (0 to 2^14 range) this indicates to the gauge that your usable capacity range is pretty small. Also your CompRes values are pretty high, which indicates that your resistance table is high. From what it looks like the reason SOH is so low is with the high resistance and very low DOD at EOC when a load is applied there is basically no useable capacity before terminate voltage is reached.

    Sincerely,

    Wyatt Keller

  • 0 in reply to sami josi
    Prodigy 70 points

    hi Wyatt

    here are the .gg files . the golden.gg file is the fresh production file. the 6465000903.rar is the present battery condition which is faulty .  

    can you clarify about the DODEOC values? how do you came up with the high and low levels? The Ra table has changed dramatically during battery usage. golden.gg.rar6465000903.rar

  • 0 in reply to sami josi
    TI__Guru** 102355 points

    Hello Sami,

    Thanks for sharing the .gg file. Your Ra table is very high, unless this is an extremely old battery this is probably the reason (along with DOD at EOC) your SOH is reporting so low.

    DOD at EOC is the Depth of Discharge at End of Charge, this should usually be less than 1000 (on the scale from 0 to 2^14) If it's too high that means the gauge thinks 100% SOC is at a lower point on the chem ID OCV vs DOD curve.

    Can you share more details of your load profile? Do you have a log of the profile you could share?

    Sincerely,

    Wyatt Keller

  • 0 in reply to Wyatt Keller
    Prodigy 70 points

    Hi Wyatt

    thank you for the help.  we dont actually have load files but when we use the battery it uses about 25-30 A for around 100ms. and we use it with a pressand hold butten to use it.

    best regards sami 

  • 0 in reply to sami josi
    TI__Guru** 102355 points

    Hello Sami,

    I would need more information about your load profile to determine why the Ra table is getting so large. If you do large pulses that are spaced apart (around 200s away from each other or more) with a low load rate between then most likely the gauge may be miscalculating the resistance since large load pulses cause a transient response modeled by multiple RC time constants. Impedance Track uses a resistance modeling for most of it's gauging.

    Sincerely,

    Wyatt Keller

  • 0 in reply to Wyatt Keller
    Prodigy 70 points

    Hi Wyatt

    I think you are on the right track and understand the problem to use impedance tracking on a non smooth (transient) application. Unfortunately, this is what we have regarding our battery load. (approx 100mA standby and heavy pulses (>20A for ~100ms). Pulses may be spaced from 5s to hours.
    We earlier thought of the current filtering capacitors as a potential problem (100Ohm, 100nF) but time constant is far less than current pulses and cell (non resistive) impedance impact.
    So is there a way to configure the current chip to better repond to our profile? Speed up sampling, reduce impedance track adaption (to 0)? Only rely on OCV at resting periods and Coulomb counting?
    The device is only active (approx 100mA load) minutes per use occation, with one ore more >20A pulses per occation.
    You mention 200s. Is there current levels, time periods etc where IC is more active or uses other sample frequencies etc to save power that can be revised?

    best regards sami

  • 0 in reply to sami josi
    Prodigy 70 points

    Hi Wyatt

    I think you are on the right track and understand the problem to use impedance tracking on a non smooth (transient) application. Unfortunately, this is what we have regarding our battery load. (approx 100mA standby and heavy pulses (>20A for ~100ms). Pulses may be spaced from 5s to hours.
    We earlier thought of the current filtering capacitors as a potential problem (100Ohm, 100nF) but time constant is far less than current pulses and cell (non resistive) impedance impact.
    So is there a way to configure the current chip to better repond to our profile? Speed up sampling, reduce impedance track adaption (to 0)? Only rely on OCV at resting periods and Coulomb counting?
    The device is only active (approx 100mA load) minutes per use occation, with one ore more >20A pulses per occation.
    You mention 200s. Is there current levels, time periods etc where IC is more active or uses other sample frequencies etc to save power that can be revised?

    best regards sami

  • 0 in reply to sami josi
    TI__Guru** 102355 points

    Hello Sami,

    The current filtering is not related to this, this is a standard filtering circuit we have on all gauges and since we use a delta-sigma ADC we are able to capture all passed charge regardless.

    Unfortunately with your load pulse being so random and your standby current is essentially large enough to prevent OCV readings and you will be in the active discharge phase I don't see a way we could set any filtering because the pulses are not periodic.

    How much does the 100ms affect the voltage? what is the voltage drop from the pulse?

    Sincerely,

    Wyatt Keller

  • 0 in reply to Wyatt Keller
    Prodigy 70 points

    Hi Wyatt

    Depending on cell voltage, voltage drop over (the two) cells is 0,5 to 1,5V during pulses.
    If I understand you correctly: RC filtering is no problem and I understand bq can accumulate discherged capacity with reasonable accuracy?

    Is the Problem  respones/filtering/updates in impedance tracking algorithm due to short (100ms) pulses?

    best regards sami

  • 0 in reply to sami josi
    TI__Guru** 102355 points

    Hello Sami,

    We use the chem ID OCV vs DOD table along with the present DOD we track during discharge to know what the resistance is. We apply filtering in the firmware for this, but if the time constant is longer than 200s between pulses with a underlying base current that leaves the gauge in discharge mode, it can cause the gauge to think the resistance is too high because of the pulse dropping the voltage.

    Let me check with the algorithm team on this.

    Sincerely,

    Wyatt Keller

  • 0 in reply to Wyatt Keller
    Prodigy 70 points

    Hi Wyatt

    Ok great hope the algorithm team would have something .

    But mean while is there a simple way to reset SOH easily? with new .gg file or something?

    best regards sami

  • 0 in reply to sami josi
    TI__Guru** 102355 points

    Hello Sami,

    If you upload the golden .gg file for new batteries SOH estimation will probably be better but since the cells would be slightly aged SOH would not be perfect.

    Sincerely,

    Wyatt Keller

  • 0 in reply to Wyatt Keller
    Prodigy 70 points

    hi Watt

    Thank you for all the support. i also wanted to ask you. At the end of the learning cycle we have not done this part

    "Before saving the Golden File, set Update Status to 02 to disable IT gauging, set the Qmax Cycle Count to 0, and set the Cycle Count to 0. For a pack side gauge, this ensures that when the pack is assembled and gauging and lifetime data is enabled, the cycle counts start from 0."

    we left Update status 06, Qmax Cycle Count  3, and set the Cycle Count  3. on the golden file 

    does this affect us in any way?

    sami

  • 0 in reply to sami josi
    TI__Guru** 102355 points

    Hello Sami,

    Not a large impact. it's just not accurate for the pack you upload it to if you use it for the golden image. For any diagnostics you would need to subtract 3 cycles from the gauge. Also any features dependent on cycle count in the gauge you should consider there are already a few programmed cycles.

    Sincerely,

    Wyatt Keller

  • 0 in reply to Wyatt Keller
    Prodigy 70 points

    Hi Wyatt

    Any new information from  the algorithm team ?  can you contact me directly due to some sensitive info .

    sami  

  • 0 in reply to sami josi
    TI__Guru** 102355 points

    Hello Sami,

    Still waiting their feedback, I have asked them again.

    If you need to share private information you can add me as a friend and private message me.

    Sincerely,

    Wyatt Keller

  • 0 in reply to Wyatt Keller
    Prodigy 70 points

    hi Wyatt

    ok i have sent you a friend request.

    sincerely

      

  • 0 in reply to sami josi
    TI__Guru** 102355 points

    Hello Sami,

    I accepted your friend request.

    Algorithm team is asking what your application is and for the load profile data.

    They also mentioned you can modify the Ra Filter value to the max to prevent Ra from updating to keep the resistance stable due to your pulsed load. This is not ideal for long term gauging, but it should remain fairly accurate and the Ra table will not be corrupted.

    Sincerely,

    Wyatt Keller

  • 0 in reply to Wyatt Keller
    Prodigy 70 points

    Hi Wyatt

    can you explain about the Ra filter being MAX(). The BQ40z50 r2 reference manual seems to suggest the opposite (MIN).

    regards sami

  • 0 in reply to sami josi
    TI__Guru** 102355 points

    Hello Sami,

    What is the end application so we can get a better understanding of the load profile?

    Ra Filter should be set to 1000 to disable updates.

    Sincerely,

    Wyatt Keller

  • 0 in reply to Wyatt Keller
    Prodigy 70 points

    Hi wyatt

    Thank you for the support. did you got my direct message?

    sami

  • 0 in reply to sami josi
    TI__Guru** 102355 points

    Sami,

    I responded to your direct message.

    Sincerely,

    Wyatt Keller

  • 0 in reply to Wyatt Keller
    Prodigy 70 points

    HI Wyatt

    i have uploaded the golden.gg file to a old battery but the SOH did not change? what can i do to reset the sate of Health with out programing .srec file.

    sami

  • +1 in reply to sami josi
    TI__Guru** 102355 points

    Hello Sami,

    After uploading did you perform a RESET command? You could also use a POR for the gauge to use the new settings.

    Sincerely,

    Wyatt Keller