Investor Engineering Discussions

[Artful Dodger]

"Isoeugenol"... Thoughts?

You may get a hit for "isoeugenol" if you check the DOE's battery materials database.:

Exploratory Battery Materials R&D | Department of Energy | www.energy.gov › eere › vehicles

"It includes a Lithium Battery Explorer, which allows researchers to search the database for materials that satisfy critical criteria for lithium batteries."​

Cheers!

 

[willow_hiller]

You may get a hit for "isoeugenol" if you check the DOE's battery materials database.:

Exploratory Battery Materials R&D | Department of Energy | www.energy.gov › eere › vehicles

"It includes a Lithium Battery Explorer, which allows researchers to search the database for materials that satisfy critical criteria for lithium batteries."​

Cheers!

Haven't tried registering for their battery material database yet, but I have found it used in an anode from a patent:

Slurry composition for positive electrode of lithium ion secondary battery, positive electrode for lithium ion secondary battery and lithium ion secondary battery - Patent JP-6369473-B2 - PubChem

JP-6369473-B2 chemical patent summary.

pubchem.ncbi.nlm.nih.gov

Slurry composition for positive electrode of lithium ion secondary battery, positive electrode for lithium ion secondary battery and lithium ion secondary battery​

Isoeugenol, 97-54-1, (E)-Isoeugenol, trans-Isoeugenol, 2-Methoxy-4-propenylphenol, ...
Compound CID: 853433
MF: C10H12O2
MW: 164.2 g/mol

Could just be a coincidence.

 

[mongo]

Afaik this is how they solved it later.
Early models with the Gen1 charger had a separate switchbox, later on they included the contactors to switch AC and DC in the OBDC.
I see that the early 40kWh Model S versions didn’t have that piece of hardware, they could only charge on AC.
Upgrade required hardware install of that unit.

The rear high voltage junction box contained the contactors to connect the charge port directly to the pack. Even on Gen 1 there was no charger input disconnect.
Tesla Model S GEN1 Rear HVJB - openinverter.org wiki

 

[mongo]

New V4 location in France
5 cabinets 12 pedestals (one for trailers), plus a wal connector or two.
~145kW pet if all spots are loaded, based on 350kW per cabinet. Also has support building which may be transformer beautification.

https://twitter.com/x/status/1677348405411033088

 

[mongo]

Given all info we have, those are V4 Stalls, not V4 Superchargers

Tesla was really careful with the language when they unveiled them, meaning that when V4 Superchargers launches, those probably will be the stalls used, but currently they still use the V3 backend, meaning for all practical purposes it's a V3 Supercharger

edit: I was wrong, as said above, the pic is from Urban SuC, but the point still stands, as far as we know there is no V4 Superchargers operational other than inside Tesla secret dungeon for testing

They new pedestals are 1000V compatible, so the pedestal + cabinets in parallel combination could be considered V4, similar to a Semi Megacharger being V3 cabinets + MCS pedestal. V3 cabinets may be at the power limit for an economical AC grid connection. In which case it's all building blocks from here out as opposed to a massive HW change. (Beyond a combo Megapack + charger which would be super high capacity)

 

[mongo]

I'm fairly certain Tesla has considered this and will provide proper power sources but smaller trailers don't need brake control and some larger trailers have surge brakes which also don't require brake control. Plus it's not difficult to install an aftermarket voltage controller.

The issue is whether the aftermarket controllers handle 16 or 48V.

The system is basically a PWM buck converter so it is not difficult, but parts need to be sized for the voltage. Additionally, switching frequency and/or inductance need tweaked.

 

[Buckminster]

This is my kind of car:
Caterham shows lightweight electric sports car for 2026 | Autocar
Lightweight
Gap in battery to bring seat lower
I like the look
3rd seat behind is novel and might work for some

 

[MC3OZ]

Google Patents and Google Scholar are useful tools of those that need a distraction from real work:-

Google Patents

Search and read the full text of patents from around the world with Google Patents, and find prior art in our index of non-patent literature.

patents.google.com

Tesla sometimes files under Tesla Motors and sometimes Tesla Inc. It isn't that easy to find their patents.

https://scholar.google.com/citations?hl=en&user=upVeFJoAAAAJ&view_op=list_works&sortby=pubdate

There is enough material around for a YouTube channel for anyone who needs to make some money

 

[mongo]

Thanks for digging that up. Franz also said something highly relevant to the Cybertruck design in a recent podcast appearance. 'Conventional trucks put the strongest materials on the inside and the weakest materials on the outside, we are doing the opposite'.

That's why CT will be much more durable as a work truck than conventional Detroit designs. The hardest part of the CT is the skin, which is literally the first layer of protection against damage and the elements.

Imma call that an 'exoskeleton', 'cuz we need a label, right?

Cheers!

Armored exoskeleton

 

[Artful Dodger]

Armored exoskeleton

Indeed. Future mil spec upgrades to include:

1. light-projection cloaking device (flat-panel LCDs on all exterior surfaces)
2. electro-magnetic shields (superconducting magnets)
3. ultra-high MV rail-gun main weapon (electric vs chemical propellant)

Telsa Goverment contracts could be huge.

 

[scaesare]

The rear high voltage junction box contained the contactors to connect the charge port directly to the pack. Even on Gen 1 there was no charger input disconnect.
Tesla Model S GEN1 Rear HVJB - openinverter.org wiki

Interesting that HVDC is supplied to the on-board charger input.

 

[MP3Mike]

Interesting that HVDC is supplied to the on-board charger input.

It eliminates two expensive contactors, and I assume whatever they had to do to make the charger deal with it costs less and has a lower probability of failure.

 

[Buckminster]

Tesla sues supercapacitor company over patent infringement, despite open patent pledge

Interesting piece on how the open patents work. Makes sense why nobody is taking them up in the offer now…

 

[bkp_duke]

It eliminates two expensive contactors, and I assume whatever they had to do to make the charger deal with it costs less and has a lower probability of failure.

Both Ford and GM listed "cost savings" in production of the vehicle as a major reason for moving to NACS, in addition to the uptime and size of the network.

Munro had a video showing the "guts" of NACS and CCS, not just the ports, but the wiring in the car. NACS had a lot less wiring needed per car.

 

[bkp_duke]

Tesla sues supercapacitor company over patent infringement, despite open patent pledge

Interesting piece on how the open patents work. Makes sense why nobody is taking them up in the offer now…

The offer, in legalese, is more like a "cross-patent agreement" than a "free use" with no strings attached. Tesla was willing to open their patents up to anyone that would do the same for them. But not someone that just wanted one-way access.

 

[MP3Mike]

Tesla sues supercapacitor company over patent infringement, despite open patent pledge

Interesting piece on how the open patents work. Makes sense why nobody is taking them up in the offer now…

Did Tesla add all of the Maxwell patents to the open patent pledge?

 

[mongo]

Did Tesla add all of the Maxwell patents to the open patent pledge?

Even if they did, the other company reported sued Tesla first.

 

[scaesare]

It eliminates two expensive contactors, and I assume whatever they had to do to make the charger deal with it costs less and has a lower probability of failure.

Trying to remember if I saw anything likely in my charger(s) when I had em open.

 

[scaesare]

The offer, in legalese, is more like a "cross-patent agreement" than a "free use" with no strings attached. Tesla was willing to open their patents up to anyone that would do the same for them. But not someone that just wanted one-way access.

Exactly.

And the chances of a company acting in good faith will simply start using patented technology without at least contacting Tesla first to explain and gain consensus on it's usage is about... zero.

Not to mention if, as @mongo says, they sued first, that's definitely a baaaad faith move...

 

[mongo]

Interesting that HVDC is supplied to the on-board charger input.

240V AC is already 339V peak, so handling 400V DC isn't much of a rating boost.
400V DC = 283 VAC (18% over nominal) and some chargers handle 277V AC.