Toshiba claims EV battery breakthrough: 200-mile charge in 6 minutes

[Stubby79]

Now that you mention it, we wouldn't be pumping in crazy amps to the car through a fat wire. We'd be pumping in crazy volts to the can and having the onboard charger convert it from mass volts to mass amps. It would have the shortest conductors reasonably possible after the charger, and there would be no loose connection or anything to worry about. And, since it's contained, it could run liquid cooling of some kind to said conductors, if necessary.

Not sure I'm comfortable with the idea of running 14kV to my car just yet though.

[JockoT]

I have worked on 200 keV Ion Implanters, so HV doesn't bother me, as long as it is properly designed, interlocked and maintained.

[redpoint5]

Originally Posted by thingstodo

Someone successfully sued McDonalds for burning themselves , because their coffee was hotter than the coffee that other fast food places sell.

The person who successfully sued only asked to have medical bills covered. It was the judge who suggested additional punitive compensation.

The burns were much worse than most people would have suffered since it was an elderly woman with thin skin, but the coffee temperature was too hot, and there had been prior complaints concerning this.

Unfortunately humans aren't all rational, and things must be made to be relatively safe even when misused. The woman shouldn't have spilled coffee on her lap, but the coffee also shouldn't have been so hot. In the future, the woman likely won't spill coffee on her lap, and McDonalds won't serve it so hot.

[jamesqf]

Originally Posted by Stubby79

Not sure I'm comfortable with the idea of running 14kV to my car just yet though.

Used to work with an ex lineman who got crossways with something in that range. He managed pretty well with his artificial arm and leg.

[NeilBlanchard]

Originally Posted by California98Civic

Anyone else starting to imagine drivers getting electrocuted to death while charging their cars? Anyone else starting to wonder if self-service charging might get regulated out of existence? Is there a hardware/software fail-safe to prevent injuries? (Not that gasoline is safe, of course!)

The plugs are not "live" until after they are plugged in, and the system has confirmed everything good to go.

[Piotrsko]

Originally Posted by Stubby79

Now that you mention it, we wouldn't be pumping in crazy amps to the car through a fat wire. We'd be pumping in crazy volts to the can and having the onboard charger convert it from mass volts to mass amps. It would have the shortest conductors reasonably possible after the charger, and there would be no loose connection or anything to worry about. And, since it's contained, it could run liquid cooling of some kind to said conductors, if necessary.

Not sure I'm comfortable with the idea of running 14kV to my car just yet though.

Sounds incredibly inefficient, huge amounts of waste heat just to charge fast.

How to do it..... buck conversion or huge winding transformers? Yucch

[JockoT]

As far as I am aware the conversion is all solid state.

[oil pan 4]

I'm going to say this one was a dude.

[redpoint5]

Originally Posted by oil pan 4

I'm going to say this one was a dude.

We don't want to assign a gender prematurely. One day it will announce an identity, and that identity may be fluid and change over time. As anti-bigots, we will affirm whatever identity it proposes.

[aerohead]

Originally Posted by Piotrsko

Only so many ways you can do 32kwh. 40 ah @ 800V. That's only about double what is in the ranger right now which would give me 80 miles range.

Maybe they were using a 50v rated brushed shunt wound motor. Pulse width would be incredibly short.

If you go up into the k volt range, motor currents are going to drop for a given hp, but the C of Drag has to be incredibly low and it needs to be very lightweight.

Sounds like unicorn corral material.

Mercedes-Benz observed something like 720-miles, on around 100-kWh pack for their EQXX concept, so, around 7.2-miles / kWh.
They averaged about 57-mph over the length of the trip. Some range would be attributed to regen. coming over the Alps.
Lightyear Zero has a little lower drag coefficient. I'm unsure about it's frontal area.
Cd 0.175 isn't the 'floor' for drag. Wolf Hucho spoke of Cd 0.09 as the technologically-feasible limit, as of 1987. And that would all depend on what priority was assigned to aerodynamics, with respect to the vehicle specification.
It would mean the end of the 'Paris Dressmakers,' and I have no illusions about the automotive industry ever giving in to physics.