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P90D Supercharging Data

Discussion in 'Model S: Battery & Charging' started by Pete90D, Aug 29, 2015.

  1. Pete90D

    Pete90D Fan of Red Lights

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    #1 Pete90D, Aug 29, 2015
    Last edited: Aug 29, 2015
    So around midnight I charged the car to 90%, went on a drive to get it down to 8% and then recorded all the data while doing a range charge at a supercharger. I had provided some of this before via photos, but there was another request to do <10% to >90%

    Here's the link to the graphs. I could post pictures, but with these graphs you can zoom in on sections by clicking and dragging the timeline you want.

    Supercharger Data

    I hope this is useful.

    P.S. the max battery option was never on. Just a long, calm drive.

    Edit: A/C was off, music was on, no sharing of power feeds.
     
    • Like x 1
  2. David99

    David99 Active Member

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    Thanks a lot! Very useful!
    Q: how did you collect the data? And I love how the graphs are interactive. How is that done?
     
  3. LargeHamCollider

    LargeHamCollider Battery cells != scalable

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    "You must spread some reputation around before giving it to Pete90d again"

    This is great data, looks like P90D owners will have a slight advantage when charging to more than about 235mi range, otherwise things are about equal.
     
  4. Pete90D

    Pete90D Fan of Red Lights

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    I wrote some code that made use of the REST API and then just tethered my laptop to my phone and polled the API continuously.

    Highcharts has great graphing libraries, they do all the heavy lifting. I just tell it how I want it to look and give it the data.
     
  5. apacheguy

    apacheguy Sig 255, VIN 320

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    Thanks for doing this. Unfortunately this data is very difficult for me to interpret. I would need to see power (kW) v SOC in order to compare with your previous data posted.
     
  6. LargeHamCollider

    LargeHamCollider Battery cells != scalable

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    ... easy to get this from the charge rate in mph data, take mph and multiply by .308
     
  7. apacheguy

    apacheguy Sig 255, VIN 320

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    Nah, thats the average over the session and that factor is not a constant. Trust me, I've been looking at taper curves for over 2 years.
     
  8. Pete90D

    Pete90D Fan of Red Lights

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    Pairing the kW and SOC together was pretty linear so I left it out. If you want it I can add it
     
  9. apacheguy

    apacheguy Sig 255, VIN 320

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    @Pete - Yeah that'd be great.
     
  10. Pete90D

    Pete90D Fan of Red Lights

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    It's updated.
     
  11. apacheguy

    apacheguy Sig 255, VIN 320

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    Something is very very wrong. The ways it's posted now kW power increases with SOC. This should be the opposite.

    ---updated---

    Back on my desktop now so I can take a closer look. Seems like at 40% you were get 84 kW (based on V x A). This is about 10-15 kW lower than what I've seen 85 kwh packs get. The mystery continues.
     
  12. Pete90D

    Pete90D Fan of Red Lights

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    I thought you wanted the kW that was added as the SoC increased.

    Here are the options. Tell me what combinations you want

    time_to_full_charge (hrs)
    battery_range (mi)
    charger_power (A?)
    battery_current (A)
    battery_level (SoC)
    charge_energy_added (kW)
    charge_rate (Wh/mi)
    charger_voltage (V)
    charge_miles_added_rated (mi)
     
  13. Sad

    Sad Member

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    You probably mean kWh instead of kW. Charger power should be in kW.
     
  14. CleanPower

    CleanPower Member

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    #14 CleanPower, Aug 29, 2015
    Last edited: Aug 29, 2015
    Could you post the raw data? Extra credit if it is in Excel or similar format.
    Thank you for doing this... I'm very interested in figuring out how fast my future 90D is going to charge...

    Here is Supercharger power vs. time for first 6 minutes... (I'm entering data by hand, so it is slow going...)
    You are charging at 115 kW for about the first 4 minutes and averaging about 100 kW for the next 2 minutes.

    Supercharging Data P90D.png
     
  15. LargeHamCollider

    LargeHamCollider Battery cells != scalable

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    Pretty sure what Apache wants is charger_power (A?) * charger_voltage (V) on one axis and battery_level (SoC) on the other.
     
  16. Troy

    Troy Member

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    Yes, I second that. If you have time vs SOC data in tabular format, can you upload an excel file or create a google sheets file. Google sheets would be better I think.

    minutesSOC
    1.38 min10%
    1.87 min11%
    2.32 min12%
     
  17. Pete90D

    Pete90D Fan of Red Lights

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    Update the chart with the power. Cleaned it up by only including the very first entry for each percentage.
     
  18. Troy

    Troy Member

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    Pete, in the opening message you could use the term supercharging instead charging. It is not clear this is about supercharging. In this forum messages can be edited for 24 hours. Maybe the title should be updated too but only moderators can change that.
     
  19. Pete90D

    Pete90D Fan of Red Lights

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    Updated

    - - - Updated - - -

    Raw data in CSV
     
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  20. Troy

    Troy Member

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    Thanks, that's very useful.
     

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