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Battery/Powertrain Cooling

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

  1. ratsbew

    ratsbew Member

    Joined:
    Mar 3, 2012
    Messages:
    371
    Does anyone have technical details of how the coolant system works for the battery, power electronics, and motor(s)?

    I'm particularly interested in the heat pump and how effective that is at keeping the temps down.

    • Is there a separate coolant compressor (AC vs. battery cooling)?
    • Can a typical 60,000BTU system really make much of a dent in the temperatures?
    • Can the pack and motor be "pre-chilled" for 0-60 launches?
    • Do diagrams of the system exist?
     
  2. djp

    djp Roadster 2.0 VIN939

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    Aug 28, 2011
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    Toronto, Canada
    There are a couple of service screen shots in this thread:

    Model S Overall Thermal Management

    The P90D has an option to pre-heat the battery for faster 0-60 sprints. Chilling the battery is better for longevity but heating is better for performance.
     
  3. apacheguy

    apacheguy Sig 255, VIN 320

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    I think it would be great to be able to pre-chill the battery. Increased thermal buffer for SpC or hot days.
     
  4. Kalud

    Kalud Member

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    Montreal, QC
    I'd like that feature, it shouldn't be too hard to do, if nav destination is a SC and SOC < x then set battery temperature set point lower y miles before arrival.
     
  5. apacheguy

    apacheguy Sig 255, VIN 320

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    Or just make it user selectable, same as the pre heat option in the P90D
     
  6. RDoc

    RDoc S85D

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    I'd be happy if they just made it possible to pre-heat the battery on cold mornings so I could get full regen. I know pre-heating the interior kind of helps, but it's a pretty mediocre workaround.
     

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