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Tesla – Introducing V3 Supercharging

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Re: Tesla – Introducing V3 Supercharging

#181

Post by xedeon »

clouddrover wrote: post #143
EngineerBetter wrote: post #136

Earlier quoted context omitted.

No car in existence can make use of them yet. It's a bit like networks bragging that they have 5G base stations before any 5G phones were created.

The Porsche Taycan already exists and goes on sale at the end of the year. It's designed around an 800 volt architecture that can make use of 350 kW chargers. Porsche is also testing 450 kW chargers for the future: https://www.cnet.com/roadshow/news/porsche-bmw-dc-fast-charg... Volkswagen has already announced three cars based on their 800 volt platform to be released across the next three years: 1. Porsche Taycan in…

I know specs are sexy but, you're missing one important detail here. Battery Longevity.

Tesla did not initially do this because they wanted the batteries on their customer's cars to last for a long time. Now that they have the data, they bumped it to 250kW along with the on-route battery warmup.

So far, I have not heard a single detail on how the Porsche Taycan deals with making sure the battery life is being preserved. This could have financial and ecological cost if not handled properly.

Re: Tesla – Introducing V3 Supercharging

#182

Post by nickik »

kmlx wrote: post #149
leesec wrote: post #2

The amount Elon has delivered so far this year alone at Tesla and SpaceX is tremendous then you see a headline where he landed a 50+ million tunneling deal on the side because why not. Staggering.

for sure: - closed stores - no profit - lied about FSD - stock down 30% - long-term investors exit the tunnel is a joke. we were promised something, but as always with musk, we get something completely different. i'm giving the tunnel deal 3 to 6 months before imploding.

- lowering prices for EV

- human rated space craft to ISS

- massively extend the lead in terms of EV charging networks

But yeah we should really focus on the closes show rooms, that's really whats important ...

Re: Tesla – Introducing V3 Supercharging

#183

Post by nickik »

clouddrover wrote: post #22
yalogin wrote: post #13

This really speaks to the brilliance of Musk and Tesla. Any other company would be happy selling Model 3s and working hard to provide incentives to sell more. Tesla identities that the bottleneck for all these cars is the charging network and simultaneously works on improving that. Really impressed with the way they think.

I think it's more about trying to catch up to the CCS charging networks which already have 350 kW chargers (Ionity, Electrify America, EVgo, FastNed). It'd be better if Tesla adopted the CCS standard for all their cars. The European version of the Model 3 has a CCS plug so it's already the case that some Teslas have it. I can fuel my ICE car at any fueling station. I should be able to charge my electric car at any ch…

How many actual 350kW chargers actually exist? And do any actual cars actually use them?

Re: Tesla – Introducing V3 Supercharging

#185

Post by KJKingJ »

rzzzt wrote: post #131
lgregg wrote: post #94

Earlier quoted context omitted.

I wonder if one day highways will have wireless power transfer that can meter you as you go.

I would be happy with a pantograph-style sliding contact on the roof!

So a trolleybus[0], but for personal vehicles?

[0] https://en.wikipedia.org/wiki/Trolleybus

Re: Tesla – Introducing V3 Supercharging

#186

Post by URSpider94 »

fudged71 wrote: post #90
azhenley wrote: post #45

Earlier quoted context omitted.

I've gotten used to it and do just fine not being able to charge at home. I have chargers at my work but still choose to mostly use the nearby supercharger. When I would use the supercharger on cold mornings, it would charge at 0mph for 10-15 minutes and then slowly increase. The worst I saw was it stayed at a rate of 25mph for over an hour before I finally had to leave. However, using a regular wall socket has consi…

Are you at all able to pre-warm the car, like when you wake up and have breakfast, so it is ready to go?

Yes, for the cabin. That doesn’t necessarily warm the battery as well, though now it’s supposed to do at least some battery warming on very cold days. From the supercharger announcement, I gather that the temp to accept 250kW is significantly higher than the temp to support typical driving demands.

Re: Tesla – Introducing V3 Supercharging

#187

Post by URSpider94 »

kumarvvr wrote: post #121
Carioca wrote: post #52

Earlier quoted context omitted.

I got curious and did the math: US gas pumps do 10 gallons per minute, which give us 0.61 L/s. Density is about 0.7kg/L, energy content is about 46.7 MJ/kg. Multiplying the three we get juuust under 20MJ/s or 20MW or about 80 times more energy than this kind of electric charger

Whoa. That is a lot of efficiency with EVs. But then, that electricity, when coming from a coal powered plant means that the overall "earth to wheels" energy efficiency is somewhere around 30%.

In the USA, outside of West Virginia, the grid tends to be much more low-carbon — at least biased towards natural gas in most places, but with a fair amount of nuclear even in states that claim not to believe in clean energy.

Re: Tesla – Introducing V3 Supercharging

#188

Post by tsukikage »

rcMgD2BwE72F wrote: post #176
atq2119 wrote: post #85

Earlier quoted context omitted.

One of the big benefits of electric in my view is that you can just let it charge overnight in your own garage. There's simply no need to charge on the way to work. (Yeah, this only works if you do have a garage, but that covers a lot of people.)

>There's simply no need to charge on the way to work Why not simply charge at work ? It makes little sense to charge on route vs at destination; unless your commute is longer than your battery range, but you would probably not have purchased an EV.

You're guaranteed a hassle-free charging spot at home, but elsewhere it's very likely there are fewer charging spots than vehicles wanting to use them, and/or the charging spots and day-long parking places are separate and you have to go move the car once charged.

Re: Tesla – Introducing V3 Supercharging

#189

Post by URSpider94 »

dreamcompiler wrote: post #78
DannyBee wrote: post #75

Earlier quoted context omitted.

No, you can't buy that service. Not even close. 400amp service is usually 2 200 amp panels. Done with 2/0 cable. It's rarely, if ever, 1 400 amp panel. 1. There is no way you would get "1000amp service" at 250v. It would be a minimum of 480v 3 phase (and not 1000amp). You may even want a lot higher, because as you'll see, getting that many amps is ... very very hard. 2. You can't even buy 1000amp cable gauge anywhere…

Which implies that Tesla is either using a much higher voltage than 250, or they're using superconductors. And I doubt they're using superconductors.

They are using 480V, and their cables are liquid-cooled.

Re: Tesla – Introducing V3 Supercharging

#190

Post by EngineerBetter »

clouddrover wrote: post #143
EngineerBetter wrote: post #136

Earlier quoted context omitted.

No car in existence can make use of them yet. It's a bit like networks bragging that they have 5G base stations before any 5G phones were created.

The Porsche Taycan already exists and goes on sale at the end of the year. It's designed around an 800 volt architecture that can make use of 350 kW chargers. Porsche is also testing 450 kW chargers for the future: https://www.cnet.com/roadshow/news/porsche-bmw-dc-fast-charg... Volkswagen has already announced three cars based on their 800 volt platform to be released across the next three years: 1. Porsche Taycan in…

Has anyone outside of Porsche witnessed it charging at that rate?
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