Tesla – Introducing V3 Supercharging • Hacker News Board

Re: Tesla – Introducing V3 Supercharging

#131

Post by rzzzt » Thu, Mar 07, 2019, 7:59 AM UTC

lgregg wrote: post #94

colmmacc wrote: post #17

Tesla Model S owner here. By choosing spots and times strategically I've gotten nearly 400MPH charging at the existing stations and the difference it makes to convenience is amazing. Super looking forward to 1000MPH! At that rate I can likely make it to Squamish BC, from Seattle, and back, with only one ~20 minute charge in between. That's still about 4x or 5x for the time I would spend filling an ICE car, but gettin…

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!

Re: Tesla – Introducing V3 Supercharging

#132

Post by EngineerBetter » Thu, Mar 07, 2019, 8:02 AM UTC

beefman wrote: post #97

I'll not take another road trip in my Tesla after dealing with the complete lack of bathrooms between San Jose and Davis -- including at Tesla Livermore which 1. shouldn't really have been closed at that hour and 2. should leave their bathrooms open after they close and 3. there's no excuse for not providing bathrooms at every supercharger station. Oh yeah, and we only put on about a mile a minute despite the charger…

Other bathrooms are available. Your Tesla should be able to stop at those; it doesn't only stop at superchargers.

One-mile-per-minute definitely sounds like something was wrong. Did you try other charging stations? How full was your battery at that point? If you've seen that with multiple stations when you battery was neither nearly empty or nearly full, I'd suggest getting the car serviced as that's not normal behaviour.

Re: Tesla – Introducing V3 Supercharging

#133

Post by natch » Thu, Mar 07, 2019, 8:03 AM UTC

yalogin wrote: post #19

The main info is missing in this PR release though. Is this a hardware upgrade or a software update? Looks like a hw upgrade, if so are they upgrading all their charging stations? Or did they already do it? How long is the upgrade going to take and how much will it cost?

It sounds like they will add new stations alongside the old ones in some cases, and replace or upgrade old ones in other cases, but really a mix of both approaches. I'm not speaking from any inside knowledge here; just thinking about what makes the most sense given how the chargers work now and the mixed makeup of the fleet.

Re: Tesla – Introducing V3 Supercharging

#134

Post by imeron » Thu, Mar 07, 2019, 8:05 AM UTC

bonzini wrote: post #105

dreamcompiler wrote: post #72

Earlier quoted context omitted.

My house has 200 Amp service. But I never use that much at once. The average US home uses an average of about 1.2KW at any given time [0]. So I was wrong above. It's more like 200 houses. [0] https://www.eia.gov/tools/faqs/faq.php?id=97&t=3

Isn't that a waste of copper? My house has about 20 Amps (3.3 kW at 230 V).

You sure about that? That would mean either running an electric oven, or an electric hob, or an aircon. But no more than one of those at once.

Re: Tesla – Introducing V3 Supercharging

#135

Post by EngineerBetter » Thu, Mar 07, 2019, 8:06 AM UTC

ilaksh wrote: post #37

Is this compatible with European charger standards?

Not sure what you mean. The current European superchargers use a Type 2 Mennekes adapter, but the protocol is proprietary.

I gather that European Model 3s will have CCS sockets (a superset of pins of Type 2 Mennekes) so they will be able to charge at other networks' stations.

Re: Tesla – Introducing V3 Supercharging

#136

Post by EngineerBetter » Thu, Mar 07, 2019, 8:12 AM UTC

Animats wrote: post #60

Porsche has had 350KW charging since 2017.[1] A 350KW charging station went into Livermore last year.[2] Tesla is only at 250KW. [1] https://electrek.co/2017/07/14/porsche-350-kw-ev-charging-st... [2] https://electrek.co/2018/12/06/electrify-america-first-350kw...

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.

Re: Tesla – Introducing V3 Supercharging

#137

Post by jerven » Thu, Mar 07, 2019, 8:12 AM UTC

bonzini wrote: post #107

burfog wrote: post #101

Earlier quoted context omitted.

Ah, just like internet service: it is oversubscribed. The utility can not deliver what has been promised for all customers at the same time.

Which would be a problem when everyone gets an electric car and every night the owners will request 20 kW for up to 8 hours (hence sustained, not peak). For a condo that could easily be half a megawatt.

That is an unreasonable number. That is 160 kwh of power which is double the largest model 3 battery. This would require everyone to drive nearly 600 miles a day at highway speed. Roughly nine hours of driving a day at 75miles an hour.

The expectation is that people drive 30ish miles a day. This is about 11kwh. Over 8 hours a night, well within reasonable limits.

Re: Tesla – Introducing V3 Supercharging

#138

Post by adrianN » Thu, Mar 07, 2019, 8:21 AM UTC

greglindahl wrote: post #109

adrianN wrote: post #104

Earlier quoted context omitted.

They can be arrogant enough to think that other manufacturers will license their stuff.

I think you missed the part where Tesla offered a free license in exchange for a patent truce... in 2014.

I did!

Re: Tesla – Introducing V3 Supercharging

#139

Post by natch » Thu, Mar 07, 2019, 8:23 AM UTC

vernie wrote: post #47

Is MPH a standard way to measure EV charging speeds? Just for the sake of comparison a slow gas pump (5 gal/min.) fueling an average (25 MPG) ICE car works out to fueling at 7500 MPH.

For sake of comparison, one gets us on a track toward sustainable energy... the other doesn't.

Interesting fact from Elon: Earth has 5 x more estimated recoverable petroleum reserves than it would take to push us over the brink of global environmental catastrophe.

Re: Tesla – Introducing V3 Supercharging

#140

Post by natch » Thu, Mar 07, 2019, 8:28 AM UTC

superkuh wrote: post #8

> more than 99% of the U.S. population is covered by the network The coasts, the south, and interstates highways. Most of the US area, where you can go in the USA, is not covered.

Not true. I've been on several long interstate trips in large western states, including very large sparsely populated ones. Coverage was never a problem. There are plenty of superchargers. The network is really impressive... and growing! On my trips I met other people at the superchargers who had similar experiences in the west, the midwest, and the east. Met people driving from Chicago to California for example, and they were doing great. You can pretty much drive anywhere in the US, although you clearly want to choose a route in such a way as to visit chargers when needed.