this post was submitted on 29 Jun 2025
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[โ€“] Renohren@lemmy.today 9 points 2 days ago* (last edited 2 days ago)

Renault EV's have their own variation of magnetless EV motors that they install on all their EV. So they need less (now very expensive) rare earth metals.

[โ€“] witty_username@feddit.nl 8 points 2 days ago (3 children)

Please forgive my ignorance in this topic. I was under the impression that rare earths were mostly used in batteries and not necessarily in electric motors.

[โ€“] Zwuzelmaus@feddit.org 5 points 2 days ago (1 children)

... and also in electric motors.

[โ€“] Sunshine@lemmy.ca -1 points 2 days ago

More precious rare earth minerals saved for the batteries.

[โ€“] Cornelius_Wangenheim@lemmy.world 4 points 1 day ago* (last edited 1 day ago) (1 children)

Most EVs use permanent magnet (neodymium) motors because they're more efficient than induction motors.

[โ€“] witty_username@feddit.nl 1 points 1 day ago

Ah I didn't know that, thanks!

Do you know why they're more efficient? My intuition would wrongly expect permanent magnet based motors to be less efficient

[โ€“] unexposedhazard@discuss.tchncs.de 1 points 2 days ago* (last edited 2 days ago) (1 children)

I assume every modern electric motor like this has a built in control and monitoring circuit, but yeah idk what else could be rare earths.

[โ€“] boonhet@sopuli.xyz 5 points 2 days ago

Magnets. Electric motors tend to use permanent magnets.