V4 Superchargers Rated at 615 kW — Cybertruck will be fastest charging EV on the road.

anionic1

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I don’t think the NEC has a table for actively-cooled cables.
Seems high maintenance but I am sure they have narrowed down the options. I am looking forward to super conductor charging. I actually am surprised Tesla isn't pursuing more induction charging. As humans we constantly look for ways to be lazier. Whether we are willing to be honest and call it for what it is. Talk about a step up over gas. Definitely can't induction fill your ICE vehicle. I wonder why they haven't pursued more induction. Probably due to the added weight of resonator that would need to constantly be on the vehicle.
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JBee

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Seems high maintenance but I am sure they have narrowed down the options. I am looking forward to super conductor charging. I actually am surprised Tesla isn't pursuing more induction charging. As humans we constantly look for ways to be lazier. Whether we are willing to be honest and call it for what it is. Talk about a step up over gas. Definitely can't induction fill your ICE vehicle. I wonder why they haven't pursued more induction. Probably due to the added weight of resonator that would need to constantly be on the vehicle.
And power levels cooking people when it goes wrong. Just like an induction hotplate.

Cables are typically size graded by temperature constraints. Lower the heat in the cables and the more power you can put through them, that's why there's different calculations for different conduit sizes or insulation types. Also doubling the voltage allows you to double the power without doubling the amps.
 

CyberGus

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I actually am surprised Tesla isn't pursuing more induction charging.
Me too. Wireless charging seems the perfect solution for destination charging, or on-street charging. No cable to steal, nor connector compatibilty issues, nor a machine to vandalize or break. And at home, just park in your usual spot.

However, Elon has expressed disdain for the technology generally. The power lost to the lower efficiency of transmission is counter to his sustainability goals.

Inductive charging has shown to be 90%+ efficient in the lab, as good or better than a cable, but that has yet to reach the field. One of the slides on Investor Day actually showed a Tesla parked over an inductive charger, so maybe there's hope.
 

CyberGus

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And power levels cooking people when it goes wrong. Just like an induction hotplate.
An induction hotplate does not cook people, unless you're Hannibal Lecter.
 

JBee

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An induction hotplate does not cook people, unless you're Hannibal Lecter.
Context is: "when it goes wrong".
EMF also is a health hazard at those power levels.
 


CyberGus

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Context is: "when it goes wrong".
EMF also is a health hazard at those power levels.
All electrical devices are hazardous "when it goes wrong".
 

firsttruck

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Arguably not the electric chair. If it goes wrong, it becomes non-hazardous.
Not usually how it works.
When a high voltage high amperage device goes wrong it can be highly dangerous to more people (ie. workers) than just the original intended recipient.
 

JBee

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All electrical devices are hazardous "when it goes wrong".
EMF can be hazardous for your health over 1 mG, some phone wireless chargers are over 100mG which are only 5 watts.

Just imagine shooting EMF (which is the means of energy wireless energy transfer) at power levels of 100,000's watts (100kW's) up through the floor you are sitting 4" from, into a Faraday cage of a vehicle interior that bounces that all around inside. Just the harmonics alone of that would be horrendous and at those power levels the inverse law is nearly pointless.

Cooked is hardly the right term, crispy fried Gus chicken is more like it.

So even if the wireless charger is working "normally" at those power levels, you are most likely exposing yourself, and your sensitive areas to high power levels of ionising radiation. Even power linesman working on cables have health and safety EMF exposure limits (like x-ray operators), and are limited on how often and for how long they can work on them, and the cables are not intentionally designed to emit EMF. To top it off the FCC SAR is a joke and not up to date enough to encompass the potential risks either. The other part is they are not efficient at those power levels either, hence the stray EMF.

There's a reason Tesla are invested in robosnake (also CSS compatable). If anything there might be an underfloor connector mechanism, but I don't see wireless going beyond phone charging. If it does you might as well use a longitudinal dipole and do what Tesla did, and drive his electric car around without a battery and just an antenna instead. 😉
 


Crissa

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Induction:
Requires heavier equipment on the car side;
There isn't a big standard like J1772;
Is much more expensive than J1772;
It interferes with nearby electronics, so has higher FCC requirements;
It supplies much less power (they tend to top out below 9kW practically)
If you miss the pad it's much less efficient;
It consumes power, at least 20%, to do the transfer.

So you can see why he's not bee hot on the deal.

-Crissa
 

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Crissa

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Tow them out of the way, just like the trucks and other vehicles that try to ICE Out charging spots. 😝
I was at an EA station Saturday and my level two charger was rear-left, the charger next to me was rear-left while the other was front-right and the last was front-middle.

Like, none of those positions works for a Lightning! Good thing they had cables on arms (and strung over the two ID4s that were charging (their port, like the Kia, is rear-right)

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