2021 LR not getting 250 kw at V3?

[SageBrush]

LG Chem cells are in cars made in China...
The Shanghai factory makes cars with either CATL or LG Chem cells in them. The US factory does not use LG Chem batteries.

There is an emerging suspicion (far from proven to date) that LG cells are part of the explanation for battery fires in the Chevy Bolt and Hyundai Kona. I wonder what Tesla thinks.

 

[Gasaraki]

There is an emerging suspicion (far from proven to date) that LG cells are part of the explanation for battery fires in the Chevy Bolt and Hyundai Kona. I wonder what Tesla thinks.

It's not suspicion. The recalled Bolts and Kona have LG Chem batteries in them. However, whatever issues that showed up in the bolts and Konas might not affect the Model 3s (from China) because the manufacturing and design is different even though the battery chemistry are the same.

 

[SageBrush]

It's not suspicion. The recalled Bolts and Kona have LG Chem batteries in them. However, whatever issues that showed up in the bolts and Konas might not affect the Model 3s (from China) because the manufacturing and design is different even though the battery chemistry are the same.

I know LG cells are in those packs. The (as yet unproven) suspicion is that the LG cells have a manufacturing defect

 

[Marius A]

LG Chem cells are in cars made in China...

The Shanghai factory makes cars with either CATL or LG Chem cells in them. The US factory does not use LG Chem batteries.

And we know this because?

 

[Gasaraki]

And we know this because?

Huh? It's fact?

The Fremont plant in California uses batteries from the Nevada Gigafactory, which is a Tesla/Panasonic plant.

All initial built in China Model 3s from Giga-Shanghai uses LG Chem batteries.
Tesla secures more batteries from LG Chem, says report - Electrek

 

[Marius A]

Huh? It's fact?

The Fremont plant in California uses batteries from the Nevada Gigafactory, which is a Tesla/Panasonic plant.

All initial built in China Model 3s from Giga-Shanghai uses LG Chem batteries.
Tesla secures more batteries from LG Chem, says report - Electrek

Which also quotes:
“South Korea’s LG Chem Ltd plans to start producing batteries for Tesla Inc vehicles at a domestic factory this year after the U.S. electric carmaker raised orders to cope with demand, a person familiar with the matter said on Friday.”

And we're seeing two different battery types in LR AWDs delivered in Europe, cars that are made in Freemont.

 

[Kirby64]

Sooo.... just for fun I thought I'd do the math on how much wire it takes to move 250KW. Turns out its a LOT. Clearly these superchargers aren't being fed by 240 VAC, but if they were and you wanted to get 250kw out of a 50 foot run of wire, it'd be TWO pairs of inch diameter copper.

I never really did the math before, but if you jacked the voltage up and current down by a factor of ten, its a MUCH more manageable single 1AWG wire(that's rated to run 2400V 24x7, of course!)

It's well known that Tesla Superchargers take 480V 3 phase as the input. The diameter of wire probably isn't nearly as thick as you think. I'd suspect that they would be using 400 MCM wire, as that's about right for 250kW. 400 MCM wire is ~0.6in thick, if it were solid copper (it's always 'stranded' at this thickness, so diameter will be a bit bigger).

 

[SageBrush]

It's well known that Tesla Superchargers take 480V 3 phase as the input. The diameter of wire probably isn't nearly as thick as you think.

My arithmetic (always suspect when it comes to electricity) says the cross sectional area drops by ~ 3.5x compared to single phase, 240V. So 250 kW requires 300 ampacity wire.

 

[Gasaraki]

Which also quotes:
“South Korea’s LG Chem Ltd plans to start producing batteries for Tesla Inc vehicles at a domestic factory this year after the U.S. electric carmaker raised orders to cope with demand, a person familiar with the matter said on Friday.”

And we're seeing two different battery types in LR AWDs delivered in Europe, cars that are made in Freemont.

You people always have to argue for no reason yet provide no evidence.

Asian suppliers' stocks slip on Tesla's cheaper battery plan.

"Tesla currently produces batteries in partnership with Panasonic at its Nevada factory, while LG Chem and CATL supply cells to its Shanghai factory."

 

[MrHopsing]

 

[Kirby64]

My arithmetic (always suspect when it comes to electricity) says the cross sectional area drops by ~ 3.5x compared to single phase, 240V. So 250 kW requires 300 ampacity wire.

Current would be 300A assuming an absolute 1.0 power factor. Presumably the power factor isn't exactly 1.0, so it'll be closer to ~320A.

 

[tij664]

On the AC side the V3 chargers should be fed from 480 V AC and after rectification should spit out more than 700 A at 350 V DC nominal on the battery pack at 250 kW. To give you an idea, this is a 1100 kcmil 25 kV rated cable in the picture. It is rated for about 650 A give or take and it is typically used in underground electric distribution feeder. That means the cable would need to be huge, as shown in the picture, and would be unmanageable and heavy: a 25 inch section of this 2 inch diameter cable weighs almost 5 lbs! That’s where the liquid cooling comes in. You can run much higher current without needing to use a massive conductor.

 

[Marius A]

You people always have to argue for no reason yet provide no evidence.

Asian suppliers' stocks slip on Tesla's cheaper battery plan.

"Tesla currently produces batteries in partnership with Panasonic at its Nevada factory, while LG Chem and CATL supply cells to its Shanghai factory."

This started with you claiming Tesla doesn't use LG in US production.
When I challenged you on that knowledge, you posted a link to an article.
I quoted that article where it said LG would start producing batteries domestically within the year (which, you know, we are in).
And now you're posting an almost 3 month old article from yahoo news?

So, even though YOU were the first one to make an assertion without proof, here is my proof:
MASTER THREAD: 2021 Model 3 and differences from 2020

 

[MrHopsing]

Yeah, its more or less confirmed, article from 10 days ago:
Exclusive: LG Chem to double China battery capacity to meet Tesla demand - sources

The firm, a supplier for Tesla’s Shanghai-built Model 3, will also ship its increased output from China as well as Korea to Tesla’s factories in Germany and the United States

LG Chem has already added production lines in South Korea this year mainly to meet demand from Tesla’s U.S. plant, the people said.

 

[SanteeMike]

Anyone else has this issue? Battery was warm, no other cars charging, SOC was 10%.
The max I got was ~150kw.

Hey TinTin, I'm over in Santee. I tried the CV supercharger when it first opened and had a hard time getting V3 juice out of it. The place was busy though and I just assumed someone was using my chargers twin.