Nippon Denki Co., Ltd. announced that it has developed a new generation of electric motors that do not use rare earths. It is expected that it will be mass-produced in 2013 to supply domestic and foreign manufacturers of electric vehicles and hybrid vehicles.
At the press conference held in Tokyo, the president of Nippon Denshoku Co., Ltd. said that a new generation of electric motors do not use permanent magnets containing rare earths, but instead turn the motor by switching the current around the bearing, which has a simple structure, is not easy to generate heat, and is low in cost. Mass production and other features.
In the past, due to the poor control of the current, there was a drawback of large noise and vibration, and thus it was not practical. In October last year, Nippon Denki purchased the motor business unit of Emerson Electric Co., Ltd., and used the patented technology of the department to solve the above problems, clearing the way for practical application.
Electric motors for hybrid and electric vehicles usually use special magnets. Rare earth metals such as cesium and tantalum are indispensable for improving the performance of such motors. In recent years, the price of rare earths has risen and new electric motors have helped to reduce the cost of hybrid and electric vehicle motors. (Xinhua News Agency, He Degong)
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