Elon 27/8: "We were too obtuse for our own good, although I think it works esthetically. Those are folded-over current collectors at the top/bottom of the cell, which are important, but I don’t want to jump the gun on Sept 22..."
Här verkar Elon alltså bekräfta att det rör sig om" tabless" celler:
https://www.tesmanian.com/blogs/tesmani ... ode-patent
7 maj twittrade han "Way more important than it sounds" som kommentar till en artikel om Teslas senaste patent om "tabless electrode".
"... removing the tab not only simplifies the manufacturing process, but also reduces the ohmic resistance in the negative electrode during electrochemical cycling by 5 to 20 times."
Så, billigare och bättre batterier om ovan stämmer. Men till vad? Varför bygger Panasonic ut GF1 med mer kapacitet och utlovar 5% kapacitetsförbättring på 2170-cellerna redan i år?
" Panasonic Corp (6752.T) plans to boost the energy density of "2170" battery cells it supplies to Tesla Inc (TSLA.O) by 20% in five years and commercialize a cobalt-free version "in two to three years", the head of its U.S. EV battery business said.
https://www.reuters.com/article/us-pana ... SKCN24V1GB
Panasonic has already developed technologies resulting in a more than 5% increase in the energy density of "2170" cells.
From September, the firm will start converting lines at its factory in Nevada that it operates with Tesla as it prepares to further boost the energy density of the cells, Takamoto said.
To control safety risks associated with higher density and less cobalt, Panasonic is adjusting the composition and design for better thermal stability, Takamoto said."
Det som beskrivs ovan låter ju inte som något revolutionerande, plus att det låter som Panasonics egen teknologi - men vad är det egentligen man förändrar? Att bara ändra kemi i cellen kräver knappast att man bygger om alla befintliga produktionslinor I GF1. Men det ska man göra. Kan det handla om samma tabless electrode som Elon är så inne på, men utan att krångla till det med helt nya cellformat?
Tesmanian, som har Elons öra, har fått tips om vad Teslas eget batteriprojekt rör sig om:
"Tesmanian previously reported that according to information received from a person familiar with the case, the new Tesla battery will have at least 30% more capacity and will be several times cheaper to manufacture. The production process will be extremely efficient and will significantly save on capital costs for equipment. In this scenario, a 130kWh pack seems possible. It also became known that the new cell will have a diameter of approximately 1.57 inches. The new battery will have a different form factor, so most likely it will be used for Semi and/or Cybertruck. Having the data obtained from the latest patents, it seems that this information is true."
