Posted on 03/09/2019 10:28:58 AM PST by ETL
The so-called V3 Supercharger operates at 250 kilowatts -- approximately twice that of the older stations -- and can charge some of its cars at a rate of 75 miles every five minutes, which Tesla is promoting as “1,000 miles per hour,” without explaining the math. (75 x 12 = 900, doesn't it?)
(Following the publication of this article, a Tesla representative clarified that the "1,000 mph" speed is a peak rate that is only sustained for a portion of the initial five-minute period on batteries at a low state of charge.
Average speeds over longer charging times were not provided, as the system is still in development.)
Combined with a new feature that brings the car’s battery pack to an optimal charging temperature as it is approaching the station, Tesla says total charging time will be reduced by up to 50 percent.
The higher speed was enabled, in part, by a switch to liquid-cooled charging cables, according to the Teslarati blog.
For now, the Fremont, Calif., station is in Beta mode and only compatible with Tesla Model 3s, which use a newer type of battery cell technology than the Model S and X, and is only being made available to a select group of owners in the Tesla Early Access Program.
(Excerpt) Read more at foxnews.com ...
You Can’t Fool Mother Nature
“75 miles every five minutes”
Still way too slow.
That’s 25 minutes for a reasonable 375 mile range.
And Teslas don’t have that much range.
75 miles in 5 minutes. What does this do to the battery’s longevity?
I still prefer my ICE. 350-400 miles worth in UNDER 5 minutes. No effect whatever on the vehicle’s systems.
I “charge” my 2013 Sequoia with liquid go juice in about 3 mins.
Note to the author it is 256KW not 250KW.
Waiting 18 minutes to get a 27 mile charge is nuts.
Sure, that’ll be easy.
Just means that every gas station will have to have its own utility substation next to it.
In the US, gas pumps for consumer use are limited to a flow rate of 10 gallons per minute.
Each gallon of gasoline contains about 130 megajoules of thermal (heat) energy.
If we assume 25% thermal efficiency for the typical car engine (probably too generous), that’s about 33 megajoules of mechanical energy per gallon; at ten gallons per minute, a gas pump is putting 330 megajoules per minute into your gas tank, which is 5.5 megajoules per second, or 5.5 megawatts.
Assuming you could charge your car from a 240 volt hookup, that would be 22,916 amps.
This would require cables with a cross-sectional area of about 23 square inches to carry safely; circular cables of that diameter would be at least 5.4 inches in diameter, not counting insulation and strand packing volume penalties. Call them six inches in diameter. Don’t forget you need two to complete an electrical circuit.
That means that when you’re filling your car from an ordinary gas pump in the United States, the rate at which energy is flowing into your gas tank is equivalent to a rate of electrical energy flow that would require two copper cables, each six inches in diameter, to conduct safely.
It’s 27 minutes for 18 miles in the picture.
Because 250,000 watts of electricity plus liquid is a great thing to be handling every day.
That's well over the equivalent of 4000 old fashioned incandescent 60 watt light bulbs burning at once. Imagine the heat waste (plus the energy needed to just cool the cables and transformers). Then imagine the power needed to charge dozens of cars at once. If one believes that Tesla is the future, one should invest in coal and natural gas.
Reminds me of that old joke about Chinese food.
That 27 miles could be a bitch if you are stuck in East L.A. or Compton at 2:00 AM.
The last 100 miles are on the back of a flat bed truck, so the math works out.
When the charging stations explode, it will be spectacular. Sort of like when a big power transformer blows.
Lol! Looks more like she’s watering the flowers!
And they let them vote...and hold public office?
Betcha I could charge that SOB in less than five minute.
Wouldnt go anywhere after, but I will tell ya that car would glow like hell.
You know...My wife had a VW diesel. Best car I ever drove. I burried the speedo on that thing several times.
After we picked it up, I got out of the car with her at the first filling and pointed my finger tapping her head. THIS THING GETS FILLED WITH DIESEL. Repeat after me! THIS THING GETS FILLED WITH DIESEL!!
She never made a mistake. Even with my 03 dodge 3500 diesel.
I drive a diesel but while attending the NY Auto Show next month I'll be checking out what major companies are showing. I'll never own one but I am curious.
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