News News
Contact us
  • Customer service number:64321087
  • Commercial service telephone:13918059423
  • Technical service telephone:13918059423
  • Contact person: Mr. Cui 
  • Service
  • Address: room 107, building 8, no. 100, guilin road, xuhui district, Shanghai

Factbox: Automakers cutting back on rare earth magnets

The date of: 2021-07-20
viewed: 0


(Reuters) – As tensions mount between China and the United States, automakers in the West are trying to reduce their reliance on a key driver of the electric vehicle revolution – the magnets made with rare earth metals that power electric engines.

Here’s how EVs are powered, and how some automakers are adapting.

What’s the difference?

Permanent magnet motors – using rare earths such as neodymium and dysprosium – naturally have magnetic force. These are at the heart of many electric motors, powering the rotor of the drivetrain.

Motors without permanent magnets, such as induction motors, use electric current, often with copper wiring, to create a magnetic field and power the motor. These are cheaper, but less efficient and require a larger battery, reducing the driving range.


Japan’s third largest carmaker says it is scrapping rare earth magnets from its new Ariya SUV.

In 2012, Nissan developed an electric motor that required 40% less dysprosium; and in 2016 it extended that reduction.


The world’s biggest EV maker initially used induction motors without rare earth permanent magnets, but in 2017 it released its Model 3 with a permanent magnet motor. In 2019, it redesigned its drive unit for Models S and X to use two motors, one with permanent magnets and one without.


The German brand’s new iX3 SUV model, due this year, will be its first electric vehicle to use a redesigned drivetrain that no longer requires rare earths.


The French automaker, an alliance partner of Nissan, is a pioneer in non-rare earth electric motors. Its small city car Zoe, released in 2012, uses “wound” electric motors with copper wire instead.


Japan’s Toyota has been reducing rare earths in its electric vehicles. It says it is still working on that after developing a magnet that used 20%-50% less neodymium in 2018.


VW is using permanent magnets with less of two rare earths, terbium and dysprosium. In its all-drive electric models, the company has also started using a permanent magnet motor on the rear axle and one without magnets on the front axle.


The German carmaker has reduced rare earths in its Mercedes Benz electric vehicles and told Reuters it plans to eliminate them in the medium term.

Hot News / Related to recommend
  • 2022 - 05 - 25
    Click on the number of times: 0
    source:natureAbstractAn optimized sol–gel protocol was carried out to produce an yttrium aluminum garnet (YAG) xerogel from aluminum alkoxide and an yttrium salt on a semi-pilot scale. This xerogel wa...
  • 2022 - 05 - 24
    Click on the number of times: 0
    source:phys.orgResearchers at Northeastern have discovered a new quantum phenomenon in a specific class of materials, called antiferromagnetic insulators, that could yield new ways of powering 'sp...
  • 2022 - 05 - 23
    Click on the number of times: 1
    source:azomBackgroundPhotocatalysis provides a long-term solution for converting solar energy into high-value chemical fuels. Over the last few decades, a lot of effort has gone into discovering and d...
  • 2022 - 05 - 20
    Click on the number of times: 1
    Generating ultra-violet lasers with near-infrared light through “domino upconversion” of nanoparticles source:eurekalertStrong and coherent ultraviolet light emission devices have enormous medica...
  • Copyright ©Copyright 2018 2020 Shanghai rare earth association All Rights Reserved Shanghai ICP NO.2020034223
    the host:Shanghai Association of Rare Earth the guide:Shanghai Development and Application Office of Rare Earth the organizer:Shanghai rare earth industry promotion center