Tesla Inductive Wireless Charging development has reached 25 kW charging speed

[Sjohnson20]

They are building a toll road in orlando that will charge EVs while driving. Its just for testing, but if it works maybe there will be more

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[CyberGus]

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...

I wouldn't say inductive charging is easier to install, but probably easier to maintain; no cable to break, vandalize or steal.

There are plenty of condo owners stuck without an EVSE because they're "ugly" or are somehow a "trip hazard", not to mention they attract Karens.

 

[Administrator]

Tesla just confirmed that efficiency of wireless charging for Cybercab robotaxi is "well above 90%"

 

[mongo]

I wouldn't say inductive charging is easier to install, but probably easier to maintain; no cable to break, vandalize or steal.

There are plenty of condo owners stuck without an EVSE because they're "ugly" or are somehow a "trip hazard", not to mention they attract Karens.

Ahhhh, the human aspect

I was imagining drilling a hole in the deck and wiring it via the ceiling of the floor below. Of course, they could also do that with a connector on a post.

 

[Deleted member 17810]

If they're reaching 90 efficiency that will be an amazing breakthrough.

The next question is at what distance, and what are the heat/radiation emissions tied to that.

 

[CyberGus]

The next question is at what distance, and what are the heat/radiation emissions tied to that.

Heat is never wasted

That’s just science, man

 

[Outdoors]

A sentence or two on the subject. Tesla news is stale. Inductive charging great idea in a dead news cycle period.

I remember the Alamo just like I do the battery swap at Harris Ranch.

 

[jookyone]

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.

Absolutely relevant and you couldn't be more wrong. Out of the 8.9 million barrels of gasoline consumed daily in the U.S. on average, only 1.8 million gallons, or approximately 20 percent, actually propel an internal combustion vehicle forward. The other 80 percent is wasted on heat and parasitic auxiliary components that draw away energy. (https://www.motortrend.com/news/evs-more-efficient-than-internal-combustion-engines/)
Even replacing the source of electricity generation (something ICE can't do) it's still orders of magnitude better in cost and efficiency. Where did you even come up with this drivel?

 

[rlhamil]

Battery power density (presently) is so much lower than gas or diesel that the latter can be obscenely inefficient and often still be more useful.

Power density and charging speed will improve. But from the POV of someone who only cares how it works for them and not about saving the planet (whether real or imaginary), it's not clear that it will ever be comparable, although even now it's good enough for a lot of people and use cases.

For example, I don't foresee electric airliners; although short range air taxis, yes. Which means if one wants to be obsessive about carbon neutral, one better find a process to create jet fuel that is carbon neutral (which is possible, but nobody has scaled it seriously yet). The same process if scaled could produce other petroleum fuels, allowing all the ICE vehicles that are not practical to replace with EVs to run forever.

 

[kbolt]

I've used a standard 110V outlet for 4 years and it's been great. For robotaxi this is going to be a game changer. I wonder if it requires any electrician to install? If you get a wall charger and it's not installed by a Tesla certified electrician your warranty is instantly voided, so I wonder if this is the same way.

 

[jookyone]

Battery power density (presently) is so much lower than gas or diesel that the latter can be obscenely inefficient and often still be more useful.

Can't argue with that. But logically that's like saying a nuclear bomb is more useful than a fleet of missiles, so we should just use nukes. Other than the airplane argument where physics prevents it from working, everything today should be working towards electric.

 

[rlhamil]

Can't argue with that. But logically that's like saying a nuclear bomb is more useful than a fleet of missiles, so we should just use nukes. Other than the airplane argument where physics prevents it from working, everything today should be working towards electric.

Or hydrogen, although a compact and safe confinement is problematic (but there are some chemicals that can absorb quite a bit), and the infrastructure isn't there.

Small fail-safe reactors (or solar and wind and batteries, but they're not without their own downsides and NIMBY applies either way, most people will not want a reactor OR a wind farm near them) could help green the grid. (if you think it matters; I'm undecided save that over a long enough time scale, everything probably should be sustainable even if climate change is greatly over-dramatized). And enough electricity could enable producing carbon neutral hydrocarbon fuels from CO2 and water. Some really heavy equipment, or operating in places that are very cold (or perhaps very hot too) esp. when lacking chargers, as well as large long-range aircraft, will require some sort of hydrocarbon fuels for quite some time. And of course hydrocarbons will be chemical feedstocks forever.

If the fuels are reasonably high purity, there will be less pollution. Driving behind a vehicle using biodiesel, it seems less sooty and smells more like popcorn than like diesel exhaust.

Some sci-fi books suggested that even with near magic energy sources (like controlled fusion), the use of a LOT of energy, however clean, would end up as waste heat to the point of being problematic.

But I think that at some point, although I like a degree of optimization, obsession with conservation becomes unrealistic. Nobody is going to volunteer to take a cut in either lifestyle or profits, and quite a few that don't have what we take for granted, want to have it (which with the billions of people that may feel that way, is a problem).

 

[jookyone]

Small fail-safe reactors (or solar and wind and batteries, but they're not without their own downsides and NIMBY applies either way, most people will not want a reactor OR a wind farm near them)

Agree with a lot of what you said as well as your reasons for why they might not work. I'm told that the way forward is "nuclear batteries" where energy production somehow is longer than the life of the vehicle itself, but they also promised me in 2001 that nanotechnology would allow doctors to inject tiny machines into my body and fix tissue by 2015.

Many props for having a civilized debate at a time when it seems scarce. You have my respect and humble gratitude for your insight. Cheers!

 

[rlhamil]

Agree with a lot of what you said as well as your reasons for why they might not work. I'm told that the way forward is "nuclear batteries" where energy production somehow is longer than the life of the vehicle itself, but they also promised me in 2001 that nanotechnology would allow doctors to inject tiny machines into my body and fix tissue by 2015.

Many props for having a civilized debate at a time when it seems scarce. You have my respect and humble gratitude for your insight. Cheers!

Those "nuclear batteries" (not really batteries, not rechargeable nor chemical) that don't have the Doc Brown vs the Libyans issues are things like betavoltaic generators, which will indeed last a long time but only generating 1/10 milliwatt or so. Good enough that together with a regular battery, something that draws less than that when in low power mode and is mostly in low power mode might get by. But you'd need at least 100 million times more power than that to be useful for an EV.

Many things are forecast sooner than they happen, but happen eventually. Flat screen TVs were predicted for nearly 30 years before they became affordable let alone commonplace. Controlled fusion, and depending on whether things pick up speed, unsupervised FSD, not to mention battery technologies (although progress is probably faster there) may fall into that category.

Some problems are difficult enough that understanding HOW difficult they are isn't exact or accurate.

As for me, I'm skeptical of ideologies, including environmental ones, if they're taken to the point that for example they would seriously damage the economic strength needed to develop, mass produce, and afford alternative technology. Nothing wrong with believing in things (pointless and grim without that), but in the extreme it can become counterproductive.

 

[Crissa]

Well:

Faster charging matters.
Being compatible with other systems matters.
Autonomy matters.
Reliability matters.

It isn't just about 'lazy' or 'convenience'.

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.

You still need to get the cabled power to the spaces. Inductive charging doesn't change that.

That's just nonsensical. We have all sorts of sensors and utilities embedded in roads.

It's all about cost per mile.

I wouldn't say inductive charging is easier to install, but probably easier to maintain; no cable to break, vandalize or steal.

There are plenty of condo owners stuck without an EVSE because they're "ugly" or are somehow a "trip hazard", not to mention they attract Karens.

They'll still attract Karens. (Although the traditional meaning of that isn't just those who complain, but those who call the cops on people for being the wrong color.)

The reliability is certainly something I'd be interested in.

-Crissa

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