Tesla Inductive Wireless Charging development has reached 25 kW charging speed

[Crissa]

The only way I would want this is if I lived in such a big house that my Truck could drop me off at the front door and then go park on the charger in the garage by itself.

But when I park, plugging in my Tesla is on my way inside. It takes like 5 extra seconds to plug it in.

It is only five seconds. But if this has the same efficiency... You'll see these be added to taxi queues and other places where a vehicle idles and waits.

-Crissa

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[Crissa]

With plug-in charging, it’s less likely that the 20-80% SOC range will be maintained since many drivers tend to forget to plug in. Some drivers even charge only once a week or drive all week and then plug in on the weekend. Not only is this less efficient, but it’s harder on the battery. With wireless charging, simply park and charge.

This sort of text is why I find their ad copy unbelievable.

First off, if you don't plug in until you're down below 50%, you're already in that sweet spot, and if you plug in every time, you spend more time at 80% than you do at any point below that.

-Crissa

 

[rlhamil]

What was the efficiency of your last ICE vehicle?

Irrelevant. An ICE vehicle wastes so much energy as heat out the tailpipe that cabin heating is effectively free.

But batteries are nowhere near the power density of gasoline or diesel, and even with
2x greater density and much faster charging, EVs will still have to be very focused on
efficiency to be effective. No energy use is free on an EV. And depending on one's electric rates, an EV isn't that much cheaper to charge than an ICE vehicle is to refuel; so for there to be an incentive other than eco-ideology to buy one, charging efficiency matters as much as running efficiency.

Inductive or even magnetic resonance charging simply isn't efficient, although the latter might get close enough one day. I don't even use it for my iPhone, only for my Apple Watch, and only because there's no other choice. (and I'm not quibbling about a couple of bucks a month on my electric bill there, but that inductive charging is slower than plugging in the phone)

Maybe, eventually, magnetic resonance charging in roadways (if that's even possible
given moving vehicles, and if it can be done without endangering anyone or anything) powered by magic near unlimited green energy...but the cost of installing that would be hideous.

 

[SentinelOne]

I dont have a problem plugging in, but if price is right I'll go wireless!

Inefficiency = heat = melts snow on my driveway!

 

[Sjohnson20]

Seems like something that would be good at destination chargers where people destroy cables or act like general aholes unplugging cars. No need to worry about the cable being damaged or needing your own cable. Just drive in the spot.

 

[swengl]

Seems like something that would be good at destination chargers where people destroy cables or act like general aholes unplugging cars. No need to worry about the cable being damaged or needing your own cable. Just drive in the spot.

Good point. You can't drop what is already on the ground

 

[XCeilidhX]

Have I missed the obvious big picture advantage for long term game discussion of induction charging here?

To me, stationary induction charging is pretty useless for non-autonomous charging scenarios.

The holy grail is induction charging while driving on electrified highways so your vehicle charges to increase range as you drive long stretches of highway that have been designed as inductive chargers.

This may be a pipe dream at the moment, but when the majority of vehicles are BEVs, and charging while highway driving is (potentially) available, it could drastically reduce the need to stop and charge.

To me, that is the endgame advantage of inductive charging capability. It's only long road trips where this would matter, but it is the kind of thing that could render the extended range battery pack that eats up 1/3 of your truck bed a thing of the past... someday in the future when and where we have infrastructure to support it.

My two cents.

Cheers

 

[Darthamerica]

WiTricity claims 90%+ efficiency grid-to-battery for their wireless charging solution.

https://witricity.com/technology/why-magnetic-resonance

That’s still at least a 5 to 10% increase to charging cost.

 

[CyberGus]

That’s still at least a 5 to 10% increase to charging cost.

People will chose a car that gets 20MPG over one that gets 22MPG without a second thought.

 

[CyberGus]

I see inductive charging as a path towards EV ownership for communities in multi-family dwellings, where they have no specific parking space, or must park in public where a cabled EVSE is impractical.

 

[mongo]

I see inductive charging as a path towards EV ownership for communities in multi-family dwellings, where they have no specific parking space, or must park in public where a cabled EVSE is impractical.

I can see places like parking decks supporting the latter for non-edge spots; but how is fixed infrastructure that provides up to 25kW easier to setup than fixed infrastructure that provides up to 11kW?

Inductive does pair nicely with cars that can autonomously park and unpark themselves...

 

[flyinglow]

look at the data below-it's going to be very practical and game changer.

Is this one-way or round trip?

 

[XCeilidhX]

I almost never say never. I’m certainly not holding my breath though, lol. Materials advance as science advances. 100 years from now they will have things that would seem like magic today if the curve of innovation continues to exponentially improve. So maybe not in my lifetime, but my children’s lifetime it may be possible. Although by then perhaps we’ll be off of BEVs and onto zero point propulsion or some other advancement that renders the need for batteries laughable. So in that case your prediction may be correct albeit for different reasons.


Cheers

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