Ford working on 5 Minute charging with Purdue University

MellowJohnny

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This is one part of a complex puzzle. 5 minute charging means roughly 1000kw chargers. That’s a shit ton of power. We can’t even pull that for battery electric buses yet, and they don’t even use cables, they use overhead pantographs (although 600kw is in the works for pantograph charging). Bus batteries are also over 400kwh and charge at 800V.

1000kw charging, over a cable, for a car battery that’s less than 100kwh, using todays lithium ion batteries, is not happening anytime soon (although I’d like it to as much as everyone else).

Edit: if we are talking 5 minutes to charge from 20-80%, that’s still a charge rate of over 700kw for the MME extended range. We can’t even hit 150kw sustained yet, and it’s not because of the cable.
Has an overhead pantograph approach been piloted for electric cars anywhere? It's well-known tech, and perhaps could be used on long stretches of freeway. Drive on battery most of the time, then for highway driving switch to the panto. Maybe just in a single dedicated lane?
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Mach1E

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Has an overhead pantograph approach been piloted for electric cars anywhere? It's well-known tech, and perhaps could be used on long stretches of freeway. Drive on battery most of the time, then for highway driving switch to the panto. Maybe just in a single dedicated lane?
I like the idea of a toll road or toll lane that charges wireless like your cell phone.

Could even have some sort of attachment that lowers closer to the road/charging surface while charging. Then they could also line the road with solar panels to help deliver the electricity.

Cost, safety, and getting everyone to adopt the same tech are all issues.
 

Ride_the_lightning

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I like the idea of a toll road or toll lane that charges wireless like your cell phone.

Could even have some sort of attachment that lowers closer to the road/charging surface while charging. Then they could also line the road with solar panels to help deliver the electricity.

Cost, safety, and getting everyone to adopt the same tech are all issues.
We have done some wireless inductive bus chargers, but at this point the vehicle has to be stationary and aligned pretty well on top of the charging pad for it to work well. Haven’t seen one able to couple while moving yet.
 

Ride_the_lightning

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Has an overhead pantograph approach been piloted for electric cars anywhere? It's well-known tech, and perhaps could be used on long stretches of freeway. Drive on battery most of the time, then for highway driving switch to the panto. Maybe just in a single dedicated lane?
I believe there are several pilot projects in early stages with something like that, but aimed at large semi trucks. Short sections of fast-charging via pantograph on certain parts of highways to extend the usable range of the battery. I’ll have to find it, it was a few months back.
 

dbsb3233

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Has an overhead pantograph approach been piloted for electric cars anywhere? It's well-known tech, and perhaps could be used on long stretches of freeway. Drive on battery most of the time, then for highway driving switch to the panto. Maybe just in a single dedicated lane?
Ya, I don't think many people are gonna want a giant pantograph mounted to the roof of their personal cars. :cool:
 


RedStallion

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I like the idea of a toll road or toll lane that charges wireless like your cell phone.
Could even have some sort of attachment that lowers closer to the road/charging surface while charging.
Pretty much impossible, most energy will be wasted and only a tiny fraction go to the car.
Perhaps a wire can help. Oh, wait, it's already invented, it's called an electric train. ?
Then they could also line the road with solar panels to help deliver the electricity.
Are you thinking about something like this?
 

MellowJohnny

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Ya, I don't think many people are gonna want a giant pantograph mounted to the roof of their personal cars. :cool:
True! I have seen high-speed trains in Italy elegantly tuck the pantograph into the roof, but yeah, that would probably make for a thick roof
 

Mach1E

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Pretty much impossible, most energy will be wasted and only a tiny fraction go to the car.
Perhaps a wire can help. Oh, wait, it's already invented, it's called an electric train. ?

Are you thinking about something like this?
No, I was thinking of regular old solar panels on the side of the road.

Pretty much the whole road would have to be the induction charger.
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