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Battery Cooling

Discussion in 'Model 3: Battery & Charging' started by PRSIST, Jun 19, 2017.

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  1. PRSIST

    PRSIST Member

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    Since i have not read anything about Tesla battery packs overheating, I'm taking that as a good sign. Right now in the Phoenix area it is 116 degrees a forecasted to be over 120 for the next two days. Are there any Tesla owners out there that can comment on battery overheating in Phoenix area?? Is it a concern or no sweat?
     
  2. apacheguy

    apacheguy S Sig #255

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    Tesla packs can get quite hot. But definitely not over 50 C. Tesla aggressively chills the pack when the cells start approaching that target. It will even redirect cabin resources if need be.
     
  3. chillaban

    chillaban Active Member

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    I've driven, charged, and idled on my routes to Vegas in such weather and the Model S handles it no sweat. Being able to remotely activate the AC is a really wonderful feature in that climate.
     
  4. Saghost

    Saghost Well-Known Member

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    Along with GM, Tesla has one of the best battery thermal management systems in the business. Both of them use liquid coolant to heat and cool the individual cells of the battery pack, and both can hold the battery well below ambient temperatures when required by using the a separate expansion valve and the A/C compressor to chill the coolant.
     
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  5. Waiting4M3

    Waiting4M3 Active Member

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    Is Arizona hotter than the middle east? Tesla sells cars there, I think Arizona is probably not as bad.
     
  6. Lu Ann

    Lu Ann Member

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    I haven't had a problem with mine today as hot as it was. There is audible noise from the battery cooling and HVAC system though.
     
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  7. SigNC

    SigNC Member

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    Does battery cooling kick in even when the car is not being driven and isn't plugged in? Say, if it's just parked in direct sun in a hot asphalt parking lot?
     
  8. Boourns

    Boourns Active Member

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    Yes.
     
  9. X Fan

    X Fan Supporting Member

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    seems early in year for 120s...but, it's a "dry" heat, right?
     
  10. apacheguy

    apacheguy S Sig #255

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    It depends. If the BMS/THC is asleep it does not maintain thermal targets, but the next time the contactors close to provide power to any vehicle systems then it will enforce thermal limits.
     
  11. SigNC

    SigNC Member

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    If that's the case parking in direct sunlight in the summer it seems the battery could get quite hot. Is that not as big a deal if the battery isn't charging?
     
  12. apacheguy

    apacheguy S Sig #255

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    The battery has quite a bit of thermal mass. The highest I’ve seen it get when parked in direct sunlight is about 40 C. Passive cooling is activated at 30 C. It’s not all that effective though at reducing the pack temp. Maybe just a couple degrees.
     

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