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Dual chargers & segmented battery for reduced charge time?

Discussion in 'Model 3' started by Nuclear Fusion, Jun 25, 2018.

  1. Nuclear Fusion

    Joined:
    Aug 24, 2016
    Messages:
    569
    Location:
    Australia
    I think the Tesla Semi was doing this, no?
    Why doesn’t the idea have merit for passenger cars?
     
  2. rhaekar

    rhaekar Member

    Joined:
    Nov 9, 2017
    Messages:
    202
    Location:
    San Diego
    Waste of money. Most people charge over night so the on board charger is more that sufficient.

    Some older model S had dual chargers but it was phased out.
     
  3. mongo

    mongo Well-Known Member

    Joined:
    May 3, 2017
    Messages:
    5,293
    Location:
    Michigan
    Charge rate limit (kW) is relative to pack size (kWh). Splitting the pack reduces the power you can put into each pack.
    Semi pack is large enough that the current in the charge cable is a limiting factor (and it may run 4 isolated pack/ drive unit systems)

    For cars, the pack size does not require (or benefit from) splitting. One 100kWh pack charging at 120kW would be two 50 kWh pack each charging at 60kW (120kW total). It would not become two 50kWh packs each charging at 120kWh.
     
    • Like x 1
  4. ewoodrick

    ewoodrick Member

    Joined:
    Apr 13, 2018
    Messages:
    645
    Location:
    Buford, GA
    • How often do you think that this would be needed?
    • You don't have this amount of power in residences.
    • It's not exactly cheap to get this amount of power at commercial locations.
     

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