Implications of Battery Day for Cybertruck and Tesla Semi

[101101]

It seems that battery day and the total use of the 4680 get at a lot of what people wanted
with both super capacitors and solid state designs. Not the extremes but a lot. Seems they might get right to the edge of what is needed for aviation.

But I'd like to focus on the them that we've seen how Tesla will design all its vehicles.
That us 2 mega castings ( each formed in like 1/10th of a second,) one in front, one in back connected together by a cell-in-car super tough battery as a structual member.
And for those that don't know its about 1/5 the number of cells neeeded relative to 2170s where those cells casings act as load bearing and shear transfer members and where between the cells there is only solid structual stiffening flame retardant adhesive and where the cells are bonded to the top and bottom conductive heat wicking surface of the containing case where those containing case surfaces act as heat syncs that can have liquid coolant flowing through them in optimal flow patterns and were the heat pump can recover some of that energy as needed. Also note these cells have better charge and discharge characteristics which may allow faster charging. And further note it goes without saying that these should have based on the info out prior to battery day something like millions of miles of life (plural millions) opening up virtual power plants (as Tesla already has) and supplemented home back up and more direct solar charging but not announced now so as not to Osborn.

So this 3 piece structure will be what is used in the Cybertruck under the exo-skeloton. But it might be possible to use for the Semi as well as Alcoa replaced the frame in a class 8 with aluminum casting and saved 2500lbs- see below. In thinking about what they said at battery day it seems like a little over 9000 cells may be needed but it would easily fit in the same kind of planar single layer battery arrangement. And maybe fit in 6ft by 8.5ft of space requiring no stacking.

https://www.sae.org/news/2015/05/al...-alcoa-help-cut-2500-lb-from-tractor-trailers

Even without that it cast alumimum frame it now seems like the Semi will easily hit its weight requirement for a 17klbs tractor not 25klbs.

Point I want to make is all Tesla vehicles seem to be moving to this process.

 

[gooki]

Good find.

It'll be interesting to see if Tesla uses this cell advantage to increase the semi trucks range or saves weight.

 

[101101]

I want to believe that it will increase the range to 900 miles consistent with the 54% range increase claim and 56% price decrease claim from battery day. But this cast aluminum frame was from 2015 so it was always surely part of the plan. I have a feeling 4680s help Tesla nail its original claimes at their stated price and a weight of 17,000 for the tractor. But as it is a half hour stop on a long haul after 600 miles to charge and eat and use the restroom is nothing. And I am guessing if they wanted to hit 900 miles on long haul and add a sleeper cab they could do it with a 25k tractor. But I also think Tesla was very conservative on the savings.

Where they were not conservative was with their stated plans in battery day to replace every semi on the planet themselves with 3 terawatt hours or 3.75 million semi trucks worth of batteries. I hope they terminate with prejudice Daimler's truck business- its head said the most ridiculous and dishonest things (if I understood correctly) and its trucking divison is holding Daimler back from talking the true talk of no ICE and no hydrogen scam. We should be reversing man made climate change and making sure the fossil fuel 'industry' on its way to assured permanent bankruptcy pays for it all. There has to be a retributive disuasive aspect and we need to find ways to criminalize whole industries as necessary. No more of this crap about they make too much money theiving and are too big to fail and imagine how much bribery they could spread around if left to continue. Or how are we going to pay for their unnecessary damages when it is them who will pay for it and must pay for it.

 

[101101]

Also think they might be able to offer the Semi for less with greater durability if they do the cab in stainless steel. It would be a nominal change to the shape. But given that it might add a little weight and lose a little aero it might cost a little in range and efficiency so maybe they would have to be careful very careful. Perfect even they could balance upfront price difference exactly with the cost over life of the vehicle. In convoy situations these would be ideal maybe as following trucks because aero hit would be reduced. But I think trucking companies would love the ruggedness and cyber truck buyers would like the brand continuity. Cyber and semi will be made in the same factories and share the same cells so why not? Time for a Cyber Semi? Tesla has to grab it from the patent trolls anyway. What an amazing roll out for real tough instead of fake tough. Let me say above the new cells do get into the aviation range.