Neodymium magnet - WikipediaIn spite of what Kamikabear says I do believe there are More Perm magnets in a HEV or PHEV than a Pure ice. I always have believed that HEV would dominate. I was wrong till about 18 months ago because public was convinced EVs were better till more people started using them. I also believe sometime in the future there will only be only EVs. There will not be a noticeable point where this happens. The ice motor will just keep getting smaller and very quietly disappear.
The simple truth is it takes more magnets to make more power. when GM created the first Nd Perm magnets in 1984
Neodymium magnet - Wikipedia They used more Nd and had a max field strength of less than 1 T Today the higher end magnets are about 1.7T. The motors have also become much more efficient. Tesla's motor of 15 years ago was about 90% today all are over 95% and a few have achieved 97.5% Much of this has been in armature and controller design which does effect The perm magnets a little but Electric magnets a lot. the biggest improvement that has a large impact on Perm magnets id rotor design and reducing the air GAP between the rotor and armature.
These improvements will continue and the amounts of Nd2Fe14B needed per HP or KW will go down. but regardless of the motor design the ration will be close for the volume of Perm magnets vs HP. Larger motors will always need slightly less. Primarily because they cost more so better controllers will be used. Better cooling is significant because I you compress stuff to up efficiency heat density goes up. Perm magnets do not like high temps.
I have driven PHEV RAV4 a lot. The E motor is about 150 HP it was about 100 when it first came out. The battery will give you about 40~ 45 miles of easy around town driving. This is great for most people because you can charge at your home drive to work or do shopping and recharge overnight at home. The battery and motor combination is big enough to sustain over 70MPH on the highway for about 30 miles. Want to go faster or longer than you have to use the ICE a little.
The fact remains that Power and Perm magnet volume are linked So a 150HP HEV is always going to have about 15% the volume of Perm magnets in the traction motor as a 1000HP SUV EV. All the high volume EVs love to boast about sub 4 second to 60 times and a few even have sub 3 second times. This is where the sales are. There are EVs like the Nissan Leaf That are small and not so fast. Sales are not very high. But they do have less than 200HP If you compare a modern HEVs to this then the Perm magnets are close in weight between traction motors. That is not where the markets are.
It is very posable that HEVs will use the same Volume of Perm magnets as the EVs and pure Ice they replaces. Because traction motors are smaller the HEV sales will have to be 4 to 5 times larger than the Loss of EV sales. I think this is posable because many ICE owners will find the transition to HEVS much less frightening than jumping right to a EV.
JMO EVs sales will continue to increase but at a small fraction of the rate predicted just a few years ago. HEV sales will grow very fast maybe even faster than predicted a few years ago for HEVs
Just a clarification When I say HEV I include HEVs and PHEVs When I say PHEVs I include only PHEV. I firmly believe the percent of PHEVs will go up much faster than HEVs
Here is a fairly neutral article comparing all 3 technologies. I prefer to go out and drive them and read spec sheets but third party are not bad.
https://www.nerdwallet.com/article/cars/car-shopping/electric-vs-hybrid-vs-plug-in-hybridPlease help this link takes me to somewhere that makes little sense when talking about Lynas
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