Electric vehicles require high torque density, high operational reliability, and excellent torque control capabilities in their drive systems. Consequently, NdFeB magnets must possess high magnetic energy product, high coercivity, and high operating temperature. Since these two trade-offs are in conflict, a compromise is necessary. NdFeB magnets with a grade of around N42 are generally used in automotive motors. By adding the rare metal dysprosium, the operating temperature can be raised to around 400°C, meeting automotive requirements. Trials conducted by European, American, and domestic automotive companies have confirmed that domestic NdFeB magnets meet the technical requirements. All is in place, pending orders. Hitachi Metals has collaborated extensively with Japanese automakers such as Toyota...

About 15% of the rare earth magnets used in electroacoustic devices are for manufacturing electroacoustic components. For example: speakers,

Magnets are also used in many household appliances. It is well known that most of our kitchen appliances contain DC motors, and electric toothbrushes are no exception.

With the rapid development of technology, magnets are increasingly used in communication consumer electronics, represented by mobile phones.

A conductive coil is wound around the outside of the iron core, matched to its power. This coil, which carries current, has magnetic properties similar to a magnet, and is also known as an electromagnet. We usually make it in a bar or U-shape to make it easier for the iron core to be magnetized. Additionally,

It acts on the human body to correct its magnetic field, enhances the bioelectromagnetic energy of the meridians, promotes the flow of Qi, thereby achieving the unblocking of meridians, increasing blood and oxygen supply to the brain, reducing the excitability of the peripheral nerves in the cerebral cortex, enhancing blood and oxygen supply to organs such as the lungs, spleen, liver, and perianal areas, promoting local blood circulation and venous return, decreasing capillary permeability, facilitating the absorption and dissipation of inflammation, and producing effects that promote the metabolism of bone and joint tissues, induce sleep, reduce inflammation and pain, calm the mind, invigorate blood circulation, and alleviate anxiety.

There are many components using magnets in electric motors, so there are also many types of magnets involved, such as rare earth neodymium iron boron magnets, ferrite magnets, samarium-cobalt permanent magnets, and rubber magnets. These materials will be used, as well as magnetic components made from these magnet materials. Applications include: VCM, CD/DVD-ROM, generators, electric motors, servo motors, miniature motors, and vibration motors.

The damping torque is produced by the aluminum frame winding the coil. When the aluminum frame moves in the magnetic field, the closed aluminum frame cuts through the magnetic field lines, generating an induced current ie. This eddy current interacts with the magnetic field to produce an electromagnetic damping torque Ma. Clearly, the direction of the damping torque is opposite to the direction of the aluminum frame's motion, thus allowing the pointer to stop quickly at the reading position. Of course, the coil on the aluminum frame will also form a closed circuit with the external circuit, which will similarly produce a damping torque.

Magnets are also used in many electronic appliances and smart home devices. Most kitchen appliances contain DC motors, including small electric toothbrushes. Most smart appliances require small DC motors for operation, which in turn need small neodymium magnets. Small magnets are also used in door locks, fire doors, premium kitchen doors, smart curtains, and more.