What are the concept stocks of rare earth permanent magnet coreless motors?

At present, there are about 30 domestic enterprises capable of mass production of permanent magnet motors, among which the leading enterprises are:

Dayang Electric (002249), Wolong Electric (600580), Zhongke Sanhuan (000970), Sinoma Technology (002080),

Beikuang Magnetic Materials (600980), Sinosteel Tianyuan (002057), Hengdian Dongci (002056), Tiantong (600330),

Ningbo (600366), Dong (000536),? Aerospace Electrical Appliances (002025), Dongli Transmission (002 164),

Founder Motor (002 196), Xiangdian (6004 16), Jiangte Motor (002 176), Jinlong Electromechanical (300032),

Xinpeng (002328), Qiyuan Equipment (300 140), Taihao Technology (600590).

Extended data:

Rare earth permanent magnet coreless motor is a new type of special motor representing the future development direction of motor industry. It adopts iron core-free, brushless, non-magnetic damping and rare earth permanent magnet power generation technology, which changes the structure of traditional motor with silicon steel sheet and wound stator, and combines with the electronic intelligent frequency conversion technology independently developed, so that the efficiency of the motor system is improved to over 95%.

Rare-earth permanent magnet coreless motor is a major innovation, achieving "three major" breakthroughs in technology:

Firstly, compared with the traditional radial magnetic field structure design, the axial magnetic field structure design is adopted, which greatly improves the power density and torque volume ratio.

Second, the new winding technology, high-voltage precision die casting and polymer materials are adopted to effectively reduce the copper loss of the winding.

Thirdly, the core materials of stator and rotor do not use silicon steel sheets, which eliminates magnetic damping and iron loss, reduces driving power and reduces the heat source of iron loss.

References:

Baidu Encyclopedia-Rare Earth Permanent Magnet Coreless Motor