New energy vehicles mainly include hybrid electric vehicles and pure electric vehicles. High performance iron iron boron permanent magnet materials are mainly used in driving motors of new energy vehicles. The driving motors suitable for new energy vehicles mainly include permanent magnet synchronous motors, AC asynchronous motors, and switched reluctance motors. Among them, permanent magnet synchronous motors have become mainstream motors due to their wide speed range, high power density, small size, and high efficiency. Neodymium iron boron permanent magnets have the characteristics of high magnetic energy product, high intrinsic coercivity, and high remanence, effectively improving the power density and torque density of motors, and are widely used in permanent magnet motor rotors.

EPS (Electric Power Assisted Steering System) is the component that uses the most permanent magnets besides the driving motor (0.25kg/vehicle). The micro motor used in EPS is a permanent magnet motor, which has high requirements for performance, weight, and volume. Therefore, the permanent magnet materials used in EPS are mainly high-performance sintered or hot-pressed iron iron boron magnets.

In addition to the driving motor, all motors in new energy vehicles are micro motors. Micro motors have low magnetic requirements and are currently mainly made of ferrite. However, the use of neodymium iron boron has increased the efficiency of motors by 8-50%, reduced power consumption by 10%, and reduced weight by more than 50%, which has become a trend in the development of micro motors in the future.

Car mounted speakers are also a scenario where iron iron iron boron permanent magnets are applied to new energy vehicles. The performance of permanent magnets has a direct impact on the sound quality of speakers. The higher the magnetic flux density of permanent magnets, the higher the sensitivity of the speaker, and the better the transient state. Simply put, the speaker is easy to produce sound, and the sound is simply not muddy. The main types of speaker permanent magnets on the market are aluminum nickel cobalt, ferrite, and iron iron iron boron, The magnetic properties of iron, iron, and boron are far superior to those of aluminum nickel diamonds and ferrite, especially for high-end speakers, which mostly use neodymium, iron, and boron.

Various sensors on automobiles are also a scenario for the application of iron iron boron permanent magnets in new energy vehicles. The sensors that use permanent magnets mainly include distance sensors, brake sensors, seat belt sensors, etc. They mainly use Hall sensors. In Hall sensors, permanent magnets are used to generate a magnetic field that causes the Hall element to generate offset current, thereby generating electromotive force. With the development of Hall sensors, miniaturization and integration have emerged. The selection of permanent magnets tends to choose iron iron iron boron permanent magnets with good magnetic properties and small volume.