Not long ago, with the electric vehicles of Geely Automobile, Zhongtong bus and other well-known domestic automobile enterprises coming offline, the high-performance permanent magnet motors of new energy vehicles have installed more than 70000 sets.

From the first generation round strand winding motor with a power density of 4.2-5.3kw/kg to the second generation flat copper wire winding motor with a power density of 6.3kw/kg, the product and sample index of permanent magnet motor are comparable to or exceed the product level of the first-line automobile motor manufacturers in Europe, America, Japan and South Korea.

In the past two years, 17 units have driven the upstream industry chain to break through the technical bottleneck and fill in a number of national technology and product gaps in the national "13th five year" R & D plan of new energy vehicle drive motor project. Among them, the use of heavy rare earth in rare earth permanent magnet is reduced; the long-term temperature resistance of insulating material exceeds 200 ℃, and the corona resistance life of round electromagnetic wire is several times longer than the national standard; the corona resistance life of enameled flat wire is more than 90 hours...

Some of the raw materials, core components and devices that once relied on imports have been independently developed and produced. Some materials have not only doubled their service life, but also cost only 60% of that of foreign countries.