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Gen2(and 3?) Prius Delta SOC for Torque (Android App)working?

Discussion in 'Gen 2 Prius Technical Discussion' started by Flying White Dutchman, Jan 16, 2012.

  1. Flying White Dutchman

    Flying White Dutchman Senior Member

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    like topic title

    Delta SOC,"Delta SOC","21CF","0.01 * G","0","60","%","7E3"

    anyone got this working

    i get a response of 0,0%

    this including t he delta voltage nimh can give a impression of the Hv battery pack if its any good or going to maybe fail.

    NiMH Volt Delta,"NiMH Delta","21D0","((2.56 * M) + (0.01 * N) - 327.68) - ((2.56 * J) + (0.01 * K) - 327.68)","-3","3","Volt","7E3"

    the voltage delta works but i get 0,0 response with the delta soc

    wondering if anyone get the same or other response
     
    #1 Flying White Dutchman, Jan 16, 2012
  2. vincent1449p

    vincent1449p Active Member

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    The multiplier 0.01 does not make sense, you will only get max. 2.55 %.

    I suggest try either G / 2 or G * 100 / 255.

    Vincent
     
    #2 vincent1449p, Jan 16, 2012
  3. 2009Prius

    2009Prius A Wimpy DIYer

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    I use the equivalent of G/2 in my program and haven't seen values other than 0. Someone thinks the value is not implemented.
     
    #3 2009Prius, Jan 16, 2012
  4. Flying White Dutchman

    Flying White Dutchman Senior Member

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    well the toyota ondb2 reader can read delta soc so its implemented...
     
    #4 Flying White Dutchman, Jan 16, 2012
  5. 2009Prius

    2009Prius A Wimpy DIYer

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    What's the range of delta SOC that you see with the Toyota scanner?
     
    #5 2009Prius, Jan 16, 2012
  6. usbseawolf2000

    usbseawolf2000 HSD PhD

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    I have yet to look at it. How did you test the Delta SOC? I would think it would display 0 upon getting Prius into READY. You'll have to drain and recharge the HV battery to show the delta.

    I thought the normal SOC is between 40% and 80% but per the repair manual, the normal Delta SOC is 0 to 60%. I would think the max delta would be 40%.
     
    #6 usbseawolf2000, Jan 16, 2012
  7. Flying White Dutchman

    Flying White Dutchman Senior Member

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    http://www.autoshop101.com/forms/Hybrid03.pdf

    The normal low to high SOC deviation is 20%. If the Delta SOC exceeds this means that the HV battery ECU cannot correct or maintain the SOC difference within the acceptable range.

    so yes it needs to be seen during driving IF the prius is unable to maintain the SOC it wants
    but if the prius can handle the load and charge the battery pack within a 20%limit of the set SOC ( around 605 ) it wil not be a problem

    so i guess a hilly drive UP would set a delta SOC of more then 0,0

    http://lusciousgarage.com/blog/comments/gen_1_prius_battery_failure/

    http://priuschat.com/forums/gen-ii-...p3006-battery-levels-unusually-different.html
     
    #7 Flying White Dutchman, Jan 16, 2012
    1 person likes this.
  8. usbseawolf2000

    usbseawolf2000 HSD PhD

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    Ok, so it is the SOC delta between the battery blocks (pair of modules).
     
    #8 usbseawolf2000, Jan 16, 2012
  9. Flying White Dutchman

    Flying White Dutchman Senior Member

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    i read something else
    what i read is that during use the prius wants to have 60% SOC
    while trying to keep it there ( or what ever the prius wants maybe 55%? at any time ) it can not be off by more then 20%.
    so if the prius wants 60% and its trying but can only keep it at 45 % its stil ok ( 15% off ) but at 30% soc its above the 20% fluctuation

    but.. maybe i am wrong ;_)
     
    #9 Flying White Dutchman, Jan 16, 2012
  10. 2009Prius

    2009Prius A Wimpy DIYer

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    And the answer is ... ?
     
    #10 2009Prius, Jan 17, 2012
  11. Flying White Dutchman

    Flying White Dutchman Senior Member

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    Post 7
    58 % on the obd2 scanner
     
    #11 Flying White Dutchman, Jan 17, 2012
  12. jdcollins5

    jdcollins5 Senior Member

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    20% Delta SOC is what I am seeing on my Gen III with ScanGauge. It does a good job of keeping it between 50 and 70% and maintaining 60% under normal conditions.

    It will drop down to about 50% with extended EV usage and pump up to about 70% with heavy regen braking.

    I live in the flat area of the coast so do not see a lot of steep hills, etc.
     
    #12 jdcollins5, Jan 17, 2012
  13. 2009Prius

    2009Prius A Wimpy DIYer

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    OK it looks like there is misunderstanding about what "delta SOC" means. There is the time variation of the total SOC that everyone can see on the MFD. At highway speed it usually settles near 60%. In general the Prius keeps it between 40% and 80%. But then there is the "delta SOC" which refers to the difference among the battery blocks, which is completely unrelated to the time variation of the total SOC. The battery blocks should be well balanced and the delta should be very small. If you truly have a battery that has 58% delta SOC among the blocks then the battery is dead for sure.
     
    #13 2009Prius, Jan 17, 2012
  14. jdcollins5

    jdcollins5 Senior Member

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    Yes, there does seem to be misunderstanding in terminology here. Vincent has been working on identifying new PID's with the ScanGauge. The Delta SOC I am referring to is grouped with the SOC max and min values and these follow the battery SOC shown on the MID.

    There are also different values for battery block with max and min voltages and then battery block numbers with the max and min voltages. I did not or would not associate these with SOC.
     
    #14 jdcollins5, Jan 17, 2012
  15. Flying White Dutchman

    Flying White Dutchman Senior Member

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    i dont have 58%
    at this point 0,0 :)

    but yes i DONT mean the SOC but the delta soc
     
    #15 Flying White Dutchman, Jan 17, 2012
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