Looks like 100kw less than already existing non-Tesla 350kw chargers.
Yep, in Europe ionity is building a 350kW charging network. The new Porsche Taycan will supposedly support this. So it makes sense Tesla is stepping up their game.
Tesla – Introducing V3 Supercharging
191–200 of 279 posts
Re: Tesla – Introducing V3 Supercharging
#192Earlier 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.
Although your power requirements are somewhat overblown, this is one reason that companies like EMotorWerks are developing grid-connected EVSE’s (“Chargers”) that can be centrally controlled to manage load. Ultimately, EV’s will be plugged in for the 20+ hours a day that they aren’t being driven, and the grid will use them as a giant variable load to soak up excess solar and wind power and shed load when everyone turns on the A/C on a hot day.
Lots of plugged EV’s are also the perfect pairing to rooftop solar — in Hawaii, they’ve had to stop people from installing panels on their homes because the neighborhood feeder circuits can’t handle the power being generated by all of the homes. Just redirect that power to the EV in the driveway (or your neighbor’s driveway), problem solved!
Re: Tesla – Introducing V3 Supercharging
#193Possibly stupid question. Instead of charging 1 battery slowly, why can't we charge 50 little batteries in parallel and connect them all back together after?
The problem is that the speed at which you can charge a battery without damaging it is proportional to its capacity. Charging 500 small batteries at the same time would be fine, but in general you’d have to charge them each at 1/500 the speed of the entire pack (in terms of kWh of storage).
The other problem is having enough sheer power available to charge all of the batteries (together or apart) at their maximum safe rate. The new supercharger can apply roughly double the power to the car, which cuts charging time almost in half.
Re: Tesla – Introducing V3 Supercharging
#194Earlier quoted context omitted.
The difference reminds me of the energy efficiency a EV has.
It should remind you mostly of how much longer does it takes to recharge rather than refill.
I need a reminder because I never pay attention to how long it takes. It’s just full every morning. A total paradigm shift from the old way of having to go somewhere to refill your car.
Re: Tesla – Introducing V3 Supercharging
#195Fantastic tech. However, why do they insist on doing it in a closed proprietary way? Teslas growth is coupled to general EV growth. They can't possibly be arrogant enough to believe they will be the sole supplier of EVs if they win can they? Charging is the number 1 thing holding back adoption right now.
Negotiating with other vendors to support a shared standard is S-L-O-W. By maintaining their own standard, Tesla can move at their own speed. Also, at the moment, Tesla has more long range EV’s on the road in the US than all other companies put together, as well as more Tesla supercharging stalls than all other fast charge stations combined.
Re: Tesla – Introducing V3 Supercharging
#196Earlier quoted context omitted.
You'd have to be more specific than that. You can disable data sharing if you prefer.
"Data sharing" is pretty vague but assuming you are talking about car data, it's completely decoupled from the VIN or any other identifiers that could ID you, so disabling it is just silly, but yes you can choose to not opt in.
Does "car data" include locations? There's not many people that start from area A (~500m^2 around your home) and go to area Z (~500m^2 around your office) every weekday morning, and back again every weekday evening.
And yep, this applies to anything that offers vague rudimentary location monitoring.
Re: Tesla – Introducing V3 Supercharging
#197It preheats the battery for charging now. This level of detail is amazing
I was reading some speculation today about how the preheating might actually be super efficient (i have no way to verify this though).
The car will most likely just divert the coolant from the motors to the batteries, mostly skipping the radiators. This allows them to preheat the battery without expending any extra energy to do so.
Re: Tesla – Introducing V3 Supercharging
#198Earlier quoted context omitted.
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 preserv…
The same as it's done in every EV. The individual battery cells are charged in parallel to achieve the high rate of charge and the battery pack temperature is managed to ensure optimal battery performance:
https://newsroom.porsche.com/en/products/porsche-taycan-miss...
Porsche's been making a particular point of the Taycan's temperature management. The goal is to be able to drive it like a sports car without overheating it. They talk about the Taycan offering "reproducible performance".
Teslas have a history of overheating when you try to drive them like sports cars:
http://www.thedrive.com/news/5207/this-video-reminds-us-that...
Re: Tesla – Introducing V3 Supercharging
#199Earlier quoted context omitted.
Isn't that a waste of copper? My house has about 20 Amps (3.3 kW at 230 V).
There's no way you're only getting 20 amps to your house. A microwave will consume 8-12 amps. A desktop computer is around 3-5 amps. I don't know what my electric stove used when I still had one, but it needed a 40 amp breaker on its own.
Remember there are some Europeans around running 240v ;) Also, at least on the bigger European cities, apartments and flats are more popular than houses, son usually the energy need is lower. And, of course, energy prices!
Here, in Madrid, most of my friends are running 10 to 20 amps. I'm an outlier, running 25amps (5.75 kW) because all my stuff is electric (water heater, cold/hot air conditioning, microwave, glass-ceramic stove...).
My Ryzen 5 desktop is consuming 0.3 to 0.5amps (being 50 to 120watts at 220V), supposing you're using 110volts your desktop computer must be a big gaming rig if it's consuming 350 to 550watts ;)
Re: Tesla – Introducing V3 Supercharging
#200Tesla 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…
Yeah, this is closing the gap in a significant way. It's still not "charge on the way to work" fast, but it wouldn't be a painful delay on the way home. More important, it's an improvement . I still switch back and forth between my Model S and an ICE car--I can't remember a time when the gas station experience ever got better .
The difference between 90 seconds to fill up and 3 minutes to fill up is negligible. The appetite for improvement isn't there because the marginal is small.
The difference between 3 minutes and 20 minutes is still enormous. Pretending for a minute that superchargers were as common as petrol stations, that there were never queues and you always started charging immediately. I would still not consider that a reasonable time to spend waiting around so I can finish a journey.
I agree it's a huge improvement, but it doesn't get close to making the gap insignificant