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BQ40Z50-R2: BQ40Z50-R2 RSOC drop more

Hung Ching-Huang
Prodigy 30 points
Part Number: BQ40Z50-R2
Other Parts Discussed in Thread: BQ20Z45-R1, , GPCCHEM

I use Bq20z45-R1 before, Then I change Bq20z45-R1 to 

ID_82_DV10800_ROC100_ASC105_Cycle1_Qmax1_update0e.log 
Fri May 20 09:54:32 CST 2022

Device Version Info = 4500_2_11
BQZ Device Name = bq40z50R2
BQZ Firmware Version = V2_11_BLD52

Design Capacity = 850
Design Voltage = 10800
Specification Info = 0x0031
Manufacturer Date = 2022-1-1
Serial Number = 0x0000
Manufacturer Name = Texas Instruments
Device Name = bq40z50-R2
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
1,2022-05-20 09:54:38,4.003,0x4183,85,10,0x6001,0,65535,65535,1,24.8,12522,0,0,1,100,105,886,886,65535,65535,65535,0,0,0x00E0,1,-3265,-1750,-3400,-1700,100,0x4183,0x0000,0x08,0x00C8,0x5A,0x0211,0x0078,0x0000,0x0000,0x0040,0x0000,0x0000,0x0000,0x0000,0x0000,4180,4160,4183,0,12523,12149,0,0,0,0,0,0,0,0,0,0,28.3,24.8,24.8,24.8,25.0,24.8,24.8,24.8,890,979,886,975,914,890,979,-4,-4,886,975,24.8,24.8,1000,1000,1000,0,2435,3248,2061,0,13,14,0,0,0,0,17562,698,120,27,0,0,0,65,0,192,0,0,971,921,932,4400,16108,16303,16062,0,-912,115,0.32,342,136,400,112,0,0,0,0,0,0,0,0,0,0,888,979,2419,SUCCESS
2,2022-05-20 09:54:42,8.003,0x4183,85,10,0x6001,0,65535,65535,1,24.8,12522,0,0,1,100,105,886,886,65535,65535,65535,0,0,0x00E0,1,-3265,-1750,-3400,-1700,100,0x4183,0x0000,0x08,0x00C8,0x5A,0x0211,0x0078,0x0000,0x0000,0x0040,0x0000,0x0000,0x0000,0x0000,0x0000,4180,4160,4183,0,12523,12151,0,0,0,0,0,0,0,0,0,0,28.4,24.8,24.8,24.8,25.0,24.8,24.8,24.8,890,979,886,975,914,890,979,-4,-4,886,975,24.8,24.8,1000,1000,1000,0,2435,3248,2061,0,13,14,0,0,0,0,17566,698,120,27,0,0,0,65,0,192,0,0,971,921,932,4400,16108,16303,16062,0,-912,115,0.32,342,136,400,112,0,0,0,0,0,0,0,0,0,0,888,979,2533,SUCCESS
3,2022-05-20 09:54:46,12.001,0x4183,85,10,0x6001,0,65535,65535,1,24.8,12522,0,0,1,100,105,886,886,65535,65535,65535,0,0,0x00E0,1,-3265,-1750,-3400,-1700,100,0x4183,0x0000,0x08,0x00C8,0x5A,0x0211,0x0078,0x0000,0x0000,0x0040,0x0000,0x0000,0x0000,0x0000,0x0000,4180,4160,4183,0,12524,12151,0,0,0,0,0,0,0,0,0,0,28.3,24.8,24.8,24.8,25.0,24.8,24.8,24.8,890,979,886,975,914,890,979,-4,-4,886,975,24.8,24.8,1000,1000,1000,0,2435,3248,2061,0,13,14,0,0,0,0,17570,698,120,27,0,0,0,65,0,192,0,0,971,921,932,4400,16108,16303,16062,0,-912,115,0.32,342,136,400,112,0,0,0,0,0,0,0,0,0,0,888,979,2578,SUCCESS
4,2022-05-20 09:54:50,16.001,0x4183,85,10,0x6001,0,65535,65535,1,24.8,12522,0,0,1,100,105,886,886,65535,65535,65535,0,0,0x00E0,1,-3265,-1750,-3400,-1700,100,0x4183,0x0000,0x08,0x00C8,0x5A,0x0211,0x0078,0x0000,0x0000,0x0040,0x0000,0x0000,0x0000,0x0000,0x0000,4180,4160,4183,0,12524,12148,0,0,0,0,0,0,0,0,0,0,28.4,24.8,24.8,24.8,25.0,24.8,24.8,24.8,890,979,886,975,914,890,979,-4,-4,886,975,24.8,24.8,1000,1000,1000,0,2435,3248,2061,0,13,14,0,0,0,0,17574,698,120,27,0,0,0,65,0,192,0,0,971,921,932,4400,16108,16303,16062,0,-912,115,0.32,342,136,400,112,0,0,0,0,0,0,0,0,0,0,888,979,2538,SUCCESS
.

Now I have problem below:

I use Bq20z45-R and BQ40Z50-R2 use same device Charge   RSOC 0 to 100 % time is same.

and I discharge 100 to 0 % time is same.

But I have problem below:

The BQ40Z50-R2 Manager Battery have problem

When I discharge from 100% to   below 50%

Then switch off device and wait 5 hour ,check RSOC drop 3~8%,

Then I continuous wait 10 hour 

The RSOC will drop 3%

Why it is Problem?

Please help me.

  • +1
    Prodigy 30 points

    Now I have problem below:

    I use Bq20z45-R and BQ40Z50-R2 use same device Charge   RSOC 0 to 100 % time is same.

    and I discharge 100 to 0 % time is same.

    But I have problem below:

    The BQ40Z50-R2 Manager Battery have problem

    When I discharge from 100% to   below 50%

    Then switch off device and wait 5 hour ,check RSOC drop small 3~8%,

    But  I continuous wait 10 hour 

    The RSOC will drop 3% More

    Why it is Problem?

    Please help me.

  • 0 in reply to Hung Ching-Huang
    Prodigy 30 points

    I used chemistry programming List 1318 chemistry.

    attach cell Cell-MSDS.pdf MSDS file

  • 0 in reply to Hung Ching-Huang
    TI__Guru** 102465 points

    Hello Hung,

    When you reset the gauge the gauge looses the RAM memory where the SOC parameters are stored, so the gauge must recalculate the SOC based on the OCV. If you are seeing a significant drop of SOC after a relaxation, that means your chem ID you programmed is most likely incorrect. Make sure you have found your cehm ID using the GPCCHEM tool and performed a learning cycle before testing accuracy.

    Sincerely,

    Wyatt Keller