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Sunshine@piefed.caM to Electric Vehicles@slrpnk.netEnglish · 25 days ago

It’s finally here: Porsche puts wireless EV charging into production

electrek.co

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It’s finally here: Porsche puts wireless EV charging into production

electrek.co

Sunshine@piefed.caM to Electric Vehicles@slrpnk.netEnglish · 25 days ago
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It's finally here: Porsche puts wireless EV charging into production [video]
electrek.co
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Buried in a press release titled, “Even more colours and even greater convenience for the Cayenne Electric” was news that...
  • WagnasT@piefed.world
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    25 days ago

    https://electreon.com/blog/debunking-wireless-ev-charging-myths/ Hand waving with no sources https://www.energysage.com/ev-charging/wireless-ev-charging/ This only cites the witricity article, we’ll get to that but it didnt add anything https://www.witricity.com/blogs/comparing-efficiency.php They claim that a regular wall charger is 90% efficient with no sources and that their wireless one is 96%, basically marketing hype. https://www.osti.gov/servlets/purl/1876291 Finally a source, it literally says their charger is 90% efficient, their coil to coil efficiency is 96% so that’s pretty good but still about 4% lost in transmission, in lab conditions with the coils 6" apart. https://www.ornl.gov/news/ornl-demonstrates-120-kilowatt-wireless-charging-vehicles#%3A~%3Atext=97+percent+efficiency%2C+which+is+comparable+to+conventional%2C+wired+high-power+fast+chargers This is just summarizing that paper on osti.gov https://www.mckinsey.com/industries/automotive-and-assembly/our-insights/perspectives-on-wireless-and-automated-charging-for-electric-vehicles#%3A~%3Atext=A+wireless+inductive+charging+system+is+at+least+one+or+two+percentage+points+more+efficient+than+a+DC+[direct+current]+fast+charger+at+the+same+power+level Literally marketing hype from the people that sell it, no actual useful data.

    So that whole wall of text had one source that showed 4% losses in a lab with coils really close together, which is still a lot more loss than a copper conducter.

    The marketing hype basically says if you factor in all of the losses from the power generation and transmission all the way to the wall then our additional 10% loss is no big deal so you can ignore that 1kW of lost heat you have to pay for on top of the grid’s losses that are already a part of your costs.

    • artyom@piefed.social
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      25 days ago

      If you don’t like my sources, feel free to find your own, they all say the same thing. There is no additional 10% loss. You even ackkowledged that in your reply, then came back and reported it again. What’s that about?

      • WagnasT@piefed.world
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        25 days ago

        This is why misinformation is so hard to deal with, i put in effort to read and assess what you provided and found that you came to the wrong conclusion even with the sources YOU provided and now you want me to find even more evidence that you will just ignore? Nah, your mind is already made up, you ate the marketing hype and no amount of data will sway you.
        That fist article actually has some interesting concepts that dont really apply to a pad on your driveway but like if the infrastructure was kinda everywhere then you could have smaller batteries, keep the charge in the sweet spot further reducing capital costs and keep your fleet trucking and not idling at a charger reducing opcosts. Neat. Maybe we’ll get there some day.

        • W98BSoD@lemmy.dbzer0.com
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          25 days ago

          Good on ya for not feeding the trolls.

          • artyom@piefed.social
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            25 days ago

            Ah yes, “the trolls”, those assholes that always show up with facts and half a dozen sources and then invite you to educate yourself more!

            • W98BSoD@lemmy.dbzer0.com
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              24 days ago

              • artyom@piefed.social
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                24 days ago

                Sick maymay bro

        • artyom@piefed.social
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          25 days ago

          This is why misinformation is so hard to deal with. I put in effort to find a half a dozen sources and highlight the relevant sections and you dismiss them outright because you don’t like them, but you can’t be bothered to do so much as a web search to inform yourself.

          You don’t want to learn, that’s not something I can do for you.

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