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calmbonsai 3 days ago

This is an absolute waste of weight and nothing more than a presser tech demonstrator.

Given induction's fundamental (physics) limitations, there's zero chance this will make it into a production vehicle.

The energy storage requirements and practical charging speed of a car are not remotely the same as for a portable electronic device such as a phone.

Human passenger EV charging will always be through a direct cable connection.

If you want something even faster, just do an automated physical battery swap and design the car's physical safety envelope and grounding systems around this additional access affordance.

breve 3 days ago | parent | next [-]

> There's zero chance this will make it into a production vehicle

Wireless charging is in production. Here's one example:

https://electrifynews.com/news/auto/enc-electric-bus-now-fea...

Wireless charging can be as efficient as wired charging:

https://www.youtube.com/watch?v=AE1gaNO9nj0

https://www.pcmag.com/news/wireless-ev-charging-tests-achiev...

spookie 2 days ago | parent [-]

This type of design (polyphase) is inherently even harder to align to achieve that level of efficiency, and misalignment throws the efficiency downward even faster than a simple coil. Wish I could link the research but it is behind a paywall. But a simple search on scopus and the like should suffice.

Of course, you could have some driver aid informing them how to better align themselves. But still, you will always waste energy in practice, and at the scale of automobiles out there it becomes unreasonable, no?

breve 2 days ago | parent [-]

No. If you're capable of aligning your car to a parking space, you're capable of using wireless charging.

toast0 3 days ago | parent | prev [-]

> Given induction's fundamental (physics) limitations, there's zero chance this will make it into a production vehicle.

> Human passenger EV charging will always be through a direct cable connection.

Induction charging made it into production vehicles in the past [1], so always is a little bit too strong.

[1] https://en.m.wikipedia.org/wiki/Magne_Charge