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Original question:

BQ78350: The capacity information of battery are not expected

BQ78350: BQ78350 RSOC DROP issue

Star Xu
Genius 9645 points
Part Number: BQ78350
Other Parts Discussed in Thread: BQSTUDIO, GPCCEDV, GPCCHEM

Hi Sir

My customer use BQ78350-R1, the CEDV parameters have calculated but the RC drop during learning.

Attached the gg file and log file.

Waiting for your reply.

Thanks

StarBQ78350 (1).zip

  • 0
    TI__Guru* 81035 points
    Hi Star,

    The Voltage in the log file is showing as 1320mV. The Design Voltage in the gg file is set to 3200mV. Something seems strange.

    Have you gone through the steps to calibrate the device and ensure that the AFE Cell Map is configured correctly? Have you imported the correct ChemID for the battery? Are you using the EVM or a system board? Can you give me details on the battery - voltage, number of series cells, capacity?

    Also, can you select all of the registers in BQStudio to collect the log file? This will give us more information to help you debug.

    Best regards,
    Matt
  • 0 in reply to Matt Sunna
    TI__Guru* 81035 points
    Hi Star,

    Do you have any additional data you can share? Please let me know. I will close the thread for now and it will automatically reopen if you respond.

    Best regards,
    Matt
  • 0 in reply to Matt Sunna
    TI__Genius 9645 points

    Hi Matt

    Thanks for your response.

    The customer use LiFePo4 100Ah,

    Fullscreen registers (1).log Download 
    Wed Mar 27 11:21:59 CST 2019

Device Name = bq78350_R1
Firmware Version = V1_03_BLD0022

Design Capacity = 15800
Design Voltage = 3600
Specification Info = 0x0111
Manufacturer Date = 2019-1-19
Serial Number = 0x0001
Manufacturer Name = JOULEPEAK
Device Name = TBMS12
Device Chemistry = LION

Sample,DateTime,ElapsedTime,ManufAccess,RemCapAlarm,RemTimeAlarm,BattMode,@Rate(@),@TimeFull,@TimeEmpty,@RateOK,Temperature,Voltage,Current,AvgCurr,MaxErr,RSOC,ASOC,RemCap,FullChgCap,RunTimeEmty,RunTimeEmty,AvgTimeFull,ChgCurr,ChgVolt,BattStat,CycleCnt,PendingEdv,SoH,OpStatA,OpStatB,TempRange,ChgStat,GaugeStat,MfgStat,SafetyAlertAB,SafetyStatAB,SafetyAlertCD,SafetyStatCD,PFAlertAB,PFStatAB,PFStatAB,CellVolt1,CellVolt2,CellVolt3,CellVolt4,CellVolt5,CellVolt6,CellVolt7,CellVolt8,CellVolt9,CellVolt10,CellVolt11,CellVolt12,CellVolt13,CellVolt14,CellVolt15,ExtAvgCellVolt,TS1 Temp,TS2 Temp,TS3 Temp,CellTemp,FetTemp,GaugeInternalTemp,LogRowTime(ms),LogStatus
1,2019-03-27 11:22:01,2.001,0x032B,300,10,0x6001,0,65535,65535,1,5.4,1333,0,0,100,6,5,763,14800,65535,65535,65535,10,1360,0x08D0,1,0,94,0x2B03,0x0000,0x02,0x01,0x44,0x0110,0x0000,0x0001,0x0000,0x0000,0x0000,0x0000,0x0000,3341,3323,3336,3330,0,0,0,0,0,0,0,0,0,0,0,10,5.4,-273.2,-273.2,5.4,-273.2,35.1,934,SUCCESS
2,2019-03-27 11:22:03,4.001,0x032B,300,10,0x6001,0,65535,65535,1,5.4,1333,0,0,100,6,5,763,14800,65535,65535,65535,10,1360,0x08D0,1,0,94,0x2B03,0x0000,0x02,0x01,0x44,0x0110,0x0000,0x0001,0x0000,0x0000,0x0000,0x0000,0x0000,3341,3323,3336,3330,0,0,0,0,0,0,0,0,0,0,0,10,5.4,-273.2,-273.2,5.4,-273.2,35.1,930,SUCCESS
3,2019-03-27 11:22:05,6.000,0x032B,300,10,0x6001,0,65535,65535,1,5.4,1333,0,0,100,6,5,763,14800,65535,65535,65535,10,1360,0x08D0,1,0,94,0x2B03,0x0000,0x02,0x01,0x44,0x0110,0x0000,0x0001,0x0000,0x0000,0x0000,0x0000,0x0000,3341,3323,3336,3329,0,0,0,0,0,0,0,0,0,0,0,10,5.4,-273.2,-273.2,5.4,-273.2,35.0,928,SUCCESS
4,2019-03-27 11:22:07,8.000,0x032B,300,10,0x6001,0,65535,65535,1,5.4,1333,0,0,100,6,5,763,14800,65535,65535,65535,10,1360,0x08D0,1,0,94,0x2B03,0x0000,0x02,0x01,0x44,0x0110,0x0000,0x0001,0x0000,0x0000,0x0000,0x0000,0x0000,3341,3323,3336,3329,0,0,0,0,0,0,0,0,0,0,0,10,5.4,-273.2,-273.2,5.4,-273.2,35.1,940,SUCCESS
5,2019-03-27 11:22:09,10.000,0x032B,300,10,0x6001,0,65535,65535,1,5.4,1333,0,0,100,6,5,763,14800,65535,65535,65535,10,1360,0x08D0,1,0,94,0x2B03,0x0000,0x02,0x01,0x44,0x0110,0x0000,0x0001,0x0000,0x0000,0x0000,0x0000,0x0000,3340,3323,3336,3329,0,0,0,0,0,0,0,0,0,0,0,10,5.4,-273.2,-273.2,5.4,-273.2,35.1,938,SUCCESS
6,2019-03-27 11:22:11,12.000,0x032B,300,10,0x6001,0,65535,65535,1,5.4,1333,0,0,100,6,5,763,14800,65535,65535,65535,10,1360,0x08D0,1,0,94,0x2B03,0x0000,0x02,0x01,0x44,0x0110,0x0000,0x0001,0x0000,0x0000,0x0000,0x0000,0x0000,3340,3322,3336,3329,0,0,0,0,0,0,0,0,0,0,0,10,5.4,-273.2,-273.2,5.4,-273.2,35.1,935,SUCCESS
7,2019-03-27 11:22:13,14.000,0x032B,300,10,0x6001,0,65535,65535,1,5.4,1333,0,0,100,6,5,763,14800,65535,65535,65535,10,1360,0x08D0,1,0,94,0x2B03,0x0000,0x02,0x01,0x44,0x0110,0x0000,0x0001,0x0000,0x0000,0x0000,0x0000,0x0000,3340,3323,3336,3329,0,0,0,0,0,0,0,0,0,0,0,10,5.4,-273.2,-273.2,5.4,-273.2,35.1,932,SUCCESS
8,2019-03-27 11:22:15,16.001,0x032B,300,10,0x6001,0,65535,65535,1,5.4,1333,0,0,100,6,5,763,14800,65535,65535,65535,10,1360,0x08D0,1,0,94,0x2B03,0x0000,0x02,0x01,0x44,0x0110,0x0000,0x0001,0x0000,0x0000,0x0000,0x0000,0x0000,3341,3323,3336,3330,0,0,0,0,0,0,0,0,0,0,0,10,5.4,-273.2,-273.2,5.4,-273.2,35.1,927,SUCCESS
9,2019-03-27 11:22:17,18.001,0x032B,300,10,0x6001,0,65535,65535,1,5.4,1333,0,0,100,6,5,763,14800,65535,65535,65535,10,1360,0x08D0,1,0,94,0x2B03,0x0000,0x02,0x01,0x44,0x0110,0x0000,0x0001,0x0000,0x0000,0x0000,0x0000,0x0000,3340,3323,3336,3330,0,0,0,0,0,0,0,0,0,0,0,10,5.4,-273.2,-273.2,5.4,-273.2,35.1,939,SUCCESS
10,2019-03-27 11:22:19,20.001,0x032B,300,10,0x6001,0,65535,65535,1,5.4,1333,0,0,100,6,5,763,14800,65535,65535,65535,10,1360,0x08D0,1,0,94,0x2B03,0x0000,0x02,0x01,0x44,0x0110,0x0000,0x0001,0x0000,0x0000,0x0000,0x0000,0x0000,3340,3322,3336,3330,0,0,0,0,0,0,0,0,0,0,0,10,5.4,-273.2,-273.2,5.4,-273.2,35.1,936,SUCCESS
11,2019-03-27 11:22:21,22.001,0x032B,300,10,0x6001,0,65535,65535,1,5.4,1333,0,0,100,6,5,763,14800,65535,65535,65535,10,1360,0x08D0,1,0,94,0x2B03,0x0000,0x02,0x01,0x44,0x0110,0x0000,0x0001,0x0000,0x0000,0x0000,0x0000,0x0000,3340,3323,3336,3330,0,0,0,0,0,0,0,0,0,0,0,10,5.4,-273.2,-273.2,5.4,-273.2,35.1,933,SUCCESS

    The customer set voltage unit 10mV, and want to scale the FCC to 100Ah.

    Hope your response.

    thanks

    Star 

  • 0 in reply to Star Xu
    TI__Guru* 81035 points
    Hi Star,

    Ok, I understand. To do current scaling, they need to use the firmware for BQ78350-R2 - it can be downloaded here: www.ti.com/.../BQ78350-R2-DEVICE-FW

    The initial Remaining Capacity and SOC at power up (or with Reset) are determined from the ChemID. If they have selected a matching ChemID for their battery, it will help with SOC accuracy at power-up. Next they need to collect logs for the GPCCEDV tool. If they already did this and they are not seeing accurate results, maybe they can send the output from this tool for me to review. The Design Capacity and the Design Voltage need to be set correctly as well. The full procedure is in this document: www.ti.com/.../slua924

    When they collect the logs for the GPCCEDV tool, it is good to go a little below their desired system cutoff voltage (~100mV), so they may need to widen the protection settings temporarily for the logging process so that the FETs do not open. I noticed there is a CUV fault showing in the picture you attached.

    Best regards,
    Matt
  • 0 in reply to Matt Sunna
    TI__Genius 9645 points

    Hi Matt

    Thanks for your help.

    Another question, recently many customers feedback GPCCEDV tool and GPCCHEM tool upload file successfuly, but did not receive the report email.

    Please help resove this problem. 

    Thanks

    Star

     

  • 0 in reply to Star Xu
    TI__Guru* 81035 points
    Hi Star,

    I will send a message to the team that manages these tools and will contact you privately Monday morning if I find anything out. However, sometimes the email might be blocked by a spam filter. Some users fix the problem by trying a different email address if the email server for their company is filtering the email with the report.

    Regards,
    Matt
  • 0 in reply to Matt Sunna
    TI__Genius 9645 points
    Hi Matt
    Thanks for your help.
    This problem still not resolve, many customers complain this issue.
    The customer reupload the successful data which had received the report but no reply.
    Waiting for your reply
    Thanks
    Star
  • 0 in reply to Star Xu
    TI__Guru* 81035 points
    Hi Star,

    It turns out there was an issue with the server that is now fixed. It will take some time for the system to work through all of the submitted files, so users should see a response within the next few hours.

    Best regards,
    Matt