Tesla battery cell team at Giga Texas has hit a new production milestone, building its 50 millionth 4680 battery cell this week. This latest milestone gives us an insight into Tesla’s 4680 production ramp at […]
  • @DraupnirEnglish
    5•6 months ago

    What shape could they do instead? As I understand it a cylindrical cell offers the best energy density and ease of manufacturing

    • ferretEnglish
      0•6 months ago

      Maybe they have the best energy density per cell, but you leave a lot of empty space between the cells. I doubt it ends up being more dense

      • threelonmusketeersOPMEnglish
        4•6 months ago

        Hexagons would pack better, but I’m not sure that the marginal gain (if any) in energy density would offset the increase in manufacturing complexity.

        Also, if any pressure were to build up in a non-cylindrical cell, it would be prone to bulging, possibly damaging its neighbouring cells.

      • @ichbinjasokreativEnglish
        3•6 months ago

        Tesla do per-cell cooling and the round shape offers more surface area for that

        • ferretEnglish
          0•6 months ago

          A cylinder has the least surface area per unit volume of any extruded shape

          • @ichbinjasokreativEnglish
            1•6 months ago

            Generally that’s true, but in this case it’s about a flat surface vs curved

            • ferretEnglish
              1•6 months ago

              That still doesn’t change anything, unless tesla is only cooling one side of the cell for whatever reason