MAGNETIC STABILIZATION METHOD FOR PERMANENT MAGNET, MAGNETICALLY STABILIZED PERMANENT MAGNET, AND PERMANENT MAGNET MOTOR

摘要

This application discloses a permanent magnet with stable magnetization, and the permanent magnet with stable magnetization may be used on new energy vehicles, wind power generation, energy-saving appliances, smart manufacturing, and other fields. The permanent magnet with stable magnetization has one magnetization direction, the permanent magnet with stable magnetization includes a heavy rare earth element, and the heavy rare earth element is dispersed in the permanent magnet with stable magnetization and has a varying concentration along a direction perpendicular to the magnetization direction. When magnetic stabilization processing is performed on the permanent magnet with stable magnetization, a permanent magnet with stable magnetization that meets different requirements on resistance to demagnetization at different positions can be obtained simply by forming, on a first face of a permanent magnet substrate, a thin film with a varying thickness or a thin film with a varying concentration of the heavy rare earth element. In addition, this further reduces a usage quantity of the heavy rare earth elements.