In 2021, Germany's Mahle released a new magnetless motor that does not require rare earth materials

In 2021, Germany's Mahle released a new type of magnetless motor that does not require rare earth materials.Moreover, the efficiency of this motor can reach more than 95% under almost any working condition, which was only achieved by Formula E racing cars before.

The key feature of the motor is the contactless inductive power transmission, which allows the motor to operate without wear.No contact and no wear gives it two advantages - one is that it is particularly efficient at high speeds, and the other is that it is extremely durable.

The electric energy transmission between the rotating parts and the stationary parts inside the motor does not occur in contact, so there is no wear and tear, and the motor can be maintenance-free. This advantage allows for a wide range of applications.

In fact, Tesla has been deliberately reducing the use of rare earths in recent years. At the press conference, Tesla said: Between 2017 and 2022, due to improving the efficiency of the transmission system, they have successfully integrated the new Model 3 drive module into The use of rare earths has been reduced by 25%.

In the motors currently used by Tesla, 500g, 10g and 10g of three rare earth elements are used respectively.And they plan to reduce the dosage of three rare earth elements to 0g in the future.

In the end, whether Tesla can achieve a technological breakthrough and further reduce the cost of car manufacturing depends on Musk's subsequent operations.