Tesla's next-gen electric motors will get rid of rare earth elements

Post by londons_explore » Fri, Mar 03, 2023, 8:43 AM UTC

beambot wrote: post #34

londons_explore wrote: post #24

There are lots of ways to make motors without rare earths... There aren't many ways to make permanent magnet motors without rare earths. The slide specifically claims this is the next generation permanent magnet motor. So the question is... Did they invent a new magnet Chemistry... Or are they using a known magnet Chemistry and are okay with not-very-strong magnets?

Best example I know of for new magnet chemistry without rare earths is Niron Magnetics: https://www.nironmagnetics.com/ https://hackaday.com/2022/09/01/iron-nitrides-powerful-magne... https://news.ycombinator.com/item?id=34359383

Post by hackerlight » Fri, Mar 03, 2023, 9:19 AM UTC

senttoschool wrote: post #61

hackerlight wrote: post #58

Earlier quoted context omitted.

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> I disagree with the (admittedly large) subset of Chinese people who support the CCP, but me having a negative view of them as people doesn't follow from that. That's funny. Chinese people support CCP. Chinese people want CCP to stay in power. CCP is made of Chinese people, and reflects quite a bit of Chinese culture. You want the CCP to go to hell. But you think Chinese people are awesome. Are you just trying to be…

Post by electricships » Fri, Mar 03, 2023, 10:50 AM UTC

midoridensha wrote: post #65

satiric wrote: post #48

Umm, Teslas do not use DC motors, I don't know where the article got that idea. I doubt they've ever used DC motors for anything more powerful than an electric seat adjuster. The Model 3 does use a permanent magnet motor, but it's an AC synchronous reluctance motor. If you're going to make an article about electric motors in Teslas, at least make sure you get the facts about the electric motors right.

If you're going to make authoritative comments about motors, you should actually get your facts correct first. >The Model 3 does use a permanent magnet motor, but it's an AC synchronous reluctance motor. No, synchronous reluctance motors do not use permanent magnets on their rotors. The motors that do are called "brushless DC motors". I'm not sure what the Model 3 uses, but last time I saw a cutaway, years ago, it wa…

Post by benevol » Fri, Mar 03, 2023, 12:32 PM UTC

schiffern wrote: post #31

toomuchtodo wrote: post #2

Why this is important: If successful, this contributes towards the reduction of national security risk around rare earth supplies and supply chain located in a possibly unfriendly nation state (major deposits are in Russia and China) and also means you don’t have to establish rare earth mines or supply chains in your own countries (capital and environmental concerns). It’s a big deal! Also, just as newer battery chem…

>just as newer battery chemistries moved away from cobalt Tesla seems to be the leader here. Per Investor Day[0] and other sources, they - developed low-cobalt and low-nickel cathodes, to reduce scarce battery metals - increased overall vehicle efficiency to allow iron cathodes which are earth-abundant - consolidated electronic modules to reduce microchips and wiring - are soon switching to 48V, to further reduce low…

Post by albertopv » Fri, Mar 03, 2023, 12:34 PM UTC

senttoschool wrote: post #4

toomuchtodo wrote: post #2

Why this is important: If successful, this contributes towards the reduction of national security risk around rare earth supplies and supply chain located in a possibly unfriendly nation state (major deposits are in Russia and China) and also means you don’t have to establish rare earth mines or supply chains in your own countries (capital and environmental concerns). It’s a big deal! Also, just as newer battery chem…

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