New 100kWh battery pack internals revealed!

TrevP

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#1
Jason Hughes (Tesla tinkerer) has bought the first 100kWh battery pack from a wrecked car and took it apart.

Lots of details here:

http://skie.net/skynet/projects/tes...nd+Info:+Inside+the+Tesla+100kWh+Battery+Pack

In a nutshell:

12 more cells per module ( I thought so!)
8256 cells total (still using same 18650 cells)
Tighter cooling loops
Backwards compatible with previous car with minor changes.

Basically they found a way to pack more cells into the same physical space. But this is the limit for this pack dimension using 18650 cells. Going forward Tesla will have to use the new 2170 cell.

By the way, both Faraday Future and Lucid motors are using 21700 cell formats in their batteries. That's how they're getting up to 130kWh in their packs.
Remember, both of those companies have ex Tesla battery people and engineers so they already knew Tesla knew was going to the 21700 cell eventually, they just went straight to that size.

Expect Tesla to reach those levels in the future too.

Note: Please do not post any of his pictures on our forum. Jason has proven a good tinkerer but is rather trigger happy with legal threats.
 
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garsh

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#3
I had never thought it through before, but he mentions that the pyro fuses use non-rechargeable lithium ion cells. How much will Tesla charge to replace these?

Do the non-performance Teslas still have passive fuses? If so, then I might decide to get a non-performance Model 3, just so I don't have to worry about replacing those batteries.
 

garsh

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#4
Are 2170 and 21700 two different cells or was that a typo? And if they are different, could you explain what those differences are?
They are the same, and it is not a typo. :)

Basically, Tesla/Panasonic renamed it to 2170. I don't know why. They're rebelling against the common industry naming standard, I guess.