2026 Porsche Cayenne coming with wireless charge - Page 1
Forum section: electronics / general

author: JPortici
author_rank: Super Contributor
timestamp: September 05, 2025, 02:51:56 pm
content: God damn it..https://newsroom.porsche.com/en/2025/products/porsche-wireless-charging-inductive-charging-40421.html

author: hexreader
author_rank: Frequent Contributor
timestamp: September 05, 2025, 03:09:09 pm
content: I am anti-EV, but wireless charging at 90% (if true) efficiency might move the needle for me.No way will I buy a crappy Porsche Cayenne to get it though. Seems like a great car to drive when it works, but seems over-priced and riddled with issues from what I see.Let me know when Ford make a practical family car with 90% efficient (might even settle for 80%) wireless chargingDisclaimer :-IMHOEDIT: just read a little further into the link provided. Can't park other way round, car has to lower itself!Madness! I am sticking with my cheap, reliable, old petrol car that can be parked at any wonky angle I choose

author: thm_w
author_rank: Super Contributor
timestamp: September 05, 2025, 10:27:56 pm
content: Not sure why its necessary to state you are anti-EV, in a thread about EV tech, on an electronics forum.Anyway: "With a maximum charging power of up to 11 kW, the sports car manufacturer has even reached the level of wired AC charging with its contactless charging system. The efficiency of energy transfer from the power grid to the battery is up to 90 percent."Not sure if I believe the number, level 2 charging is ~95% at best, so that means this inductive pad on its own must be 95% efficient as well. The path could be: AC->DC->HF AC->DC, instead of regular level 2 AC -> DC.Though this company is claiming 96-99% coil efficiency:https://witricity.com/media/blog/what-is-efficiency-how-do-you-measure-it-and-why-should-you-carehttps://www.recurrentauto.com/research/why-doesnt-your-battery-get-all-the-energy-you-pay-for

author: Circlotron
author_rank: Super Contributor
timestamp: September 05, 2025, 10:35:19 pm
content: Up to 90% efficient means no better than 90% efficient, so it could be way worse.

author: NiHaoMike
author_rank: Super Contributor
timestamp: September 07, 2025, 12:41:45 am
content: I doubt that very many Porsche owners would be concerned about losing a little efficiency. Many would, however, like the convenience.The real game changer would be if wireless charging can be done while driving. Then install that on the major interstates and EVs would become the best way to drive long distances.

author: Analog Kid
author_rank: Super Contributor
timestamp: September 07, 2025, 03:23:29 am
content: Quote from: NiHaoMike on September 07, 2025, 12:41:45 amLook; it was one thing for steam locomotives to be able to scoop up water on the fly from track pans in the mid-20th century. That worked well.Quite another for EVs to be able to scoop up battery charge at speed on the road. I doubt that can ever be made efficient enough to not be a bad joke. (Right up there with Tesla's nutjob ideas about "wireless electricity".)

author: bdunham7
author_rank: Super Contributor
timestamp: September 07, 2025, 04:23:24 am
content: Quote from: hexreader on September 05, 2025, 03:09:09 pmWhy? I don't get it. Wireless charging is great for my phone, but the EV has been happy charging with a wire for over a decade. And we don't always park it in the same place. What does wireless charging get you?

author: Stray Electron
author_rank: Super Contributor
timestamp: September 07, 2025, 09:07:39 pm
content: Quote from: bdunham7 on September 07, 2025, 04:23:24 amAbsolutely nothing. Except bragging rights around a bunch of clueless Greenies. You know the kind, the ones that can't even figure out how to plug in a cell phone charger.

author: bdunham7
author_rank: Super Contributor
timestamp: September 07, 2025, 09:20:20 pm
content: Quote from: Stray Electron on September 07, 2025, 09:07:39 pmIf you keep your phone long enough the connector may get finnicky and the $10 wireless Qi pads solve that issue. It's not gimmick and unlke u-Beam it works.The wireless EV charger may work as well, but I'm pretty sure the benefits are hardly worth the expense and complication.

author: mtwieg
author_rank: Frequent Contributor
timestamp: September 11, 2025, 12:46:04 pm
content: Yeah I call BS. There's no way that little mat is handling 11kW of sustained power. Might be believable if it only contained the coil and not the inverter, but in that case the dinky cable would be insufficient.Even if it could handle that much power, you'd probably have to position your car perfectly to get it. Hard to imagine that being more convenient than plugging in a charging cable.

author: Marco
author_rank: Super Contributor
timestamp: September 11, 2025, 03:44:26 pm
content: InductEV has systems commercially deployed for years and does 75 kW with a 2 feet square mat.A relevant thread from last year describing a system with higher efficiency from Oak Ridge national lab.https://www.eevblog.com/forum/dodgy-technology/100kw-wireless-ev-charging-at-96-efficient-using-polyphase-electromag-coupling/

author: AVGresponding
author_rank: Super Contributor
timestamp: September 11, 2025, 05:04:32 pm
content: Quote from: mtwieg on September 11, 2025, 12:46:04 pmOne of the images shows a much bigger flat cable. I expect they are all just marketing CGI. I have no liking for Porsche or VAG in general, but I expect it to be well engineered and to do what it claims**To theletterAlways remember to check the weasel words, kids

author: PlainName
author_rank: Super Contributor
timestamp: September 15, 2025, 02:30:21 pm
content: QuoteUsed to think the same about phones until I got one with wireless charging. Had to get a special stand for it, and it only charges wirelessly in that stand. But my next phone will also have wireless charging.Essentially, it's laziness. Just plonk the thing down and forget about it. Need to go just pick it up. The not fussing with wires is very seductive. Sometimes I need a really fast charge and then I'll plug in the cable, but it's a fuss (not exactly a pain but more of a drag).If the car was wireless only then it would obviously be daft, but one assumes you can also use a cable if you want. You can drive up and park and it's done, or drive or and park wrong and not give a toss because there's still enough charge. If this actually works I can see more manufacturers jumping on it and, more importantly, punters choosing to buy it.

author: tszaboo
author_rank: Super Contributor
timestamp: September 15, 2025, 03:32:18 pm
content: This is an X-Y problem. The problem is that German hybrid car users are not plugging in their cars, they were using their fuel cards to fill it up with petrol. The assumption was that this is because plugging it in is annoying. The reality is that they get the fuel card for free in their contract, and they don't get reimbursed if they charge up the car.Change the incentive, solve the problem.And for porche owners probably 10% loss doesn't matter since they are buying the car for virtue signaling and more powaah anyway.

author: Marco
author_rank: Super Contributor
timestamp: September 15, 2025, 06:41:21 pm
content: This also replaces the galvanic isolation and the buck-boost in the car for AC charging, I suspect the secondary will just have rectifiers and LC filtering. So it can catch up a bit in efficiency in that regard.