Electric car game changer

[LuFins Dad]

@Horace said in Electric car game changer:

@George-K said in Electric car game changer:

@LuFins-Dad said in Electric car game changer:

I can see Joe more behind the wheel of a Trans Am T-Top

And there it is a nice slow pitch, right over home plate....

Joe is a Trans vette-ite?

:spittake: You owe me a semi-expensive rye…

[taiwan_girl]

Link to video

[Klaus]

@Doctor-Phibes said in Electric car game changer:

It seems to me like a lot is going to need to change for this to be achievable.

Google indicates a car battery capacity is roughly 50kWh, so to charge one in 5 minutes is going to need a charger capable of delivering 50 x 12 = 600 kW. For a battery voltage of 400V (again from Google), this correlates to 1500 Amps, which is a stupidly high current.

Or am I missing something obvious?

First of all, the article says the 5min is for 100 miles, not to make the battery full. Big difference.

Secondly, maybe they charge at much higher voltages? Many modern EV charge at 800V. Maybe this one does the same at 3000V or something?

I agree with you that 1500A would be insane and probably not feasible, unless you introduce something like cooling to almost 0K or the like.

The thing that worries me more is the power grid. I doubt it can handle such extreme punctual loads very well. Imagine rush hour and suddenly 30 cars on one parking place want to charge simultaneously. You'd need a power plant besides the parking place.

[Klaus]

Let's say you want to charge 30 KWH in 5min, which might be something like 100 mile range.

That would mean they'd need to charge with 360KW. Assuming a charging park with 30 spots, they'd need 1.21Jiga10 Megawatts of power. That is a lot. I think a typical big coal or nuclear power plant produces something like 500 MW. So, 50 charger parks like that would require one nuclear power plant.

[Doctor Phibes]

@Klaus said in Electric car game changer:

Maybe this one does the same at 3000V or something?

The general public and 3000V don't mix. Particularly outside on a wet Sunday afternoon.

[Mik]

Here's another claim. But can the needed power be delivered?

https://www.msn.com/en-us/news/technology/tech-breakthrough-leads-to-a-new-battery-that-charges-in-3-minutes-and-lasts-20-years/ar-AA11S4yR?ocid=msedgntp&cvid=a87c7f0a0cdc4a4686a4f3e63e7d755c

[Doctor Phibes]

@Mik said in Electric car game changer:

Here's another claim. But can the needed power be delivered?

No.

Charging a button cell and charging a car are not the same. These guys are basically bullshitting to attract investors.

I know, I know, I'm hopelessly naive. What's worse, every year working as an engineer I seem to get a little more naive.

[taiwan_girl]

[George K]

[George K]