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Application of Neodymium Magnets in Automotive Electronics Industry

Neodymium Magnets are the key components in automotive electronic technology, which have been widely used in automotive, such as automotive safety and information system, electronic control unit, vehicle multimedia system, energy transmission system, etc. With the development of new energy vehicles and driverless technology, various safety control systems, such as safe driving assistant system and collision prediction system, will be developed and widely used. The global automotive electronics industry has ushered in a golden period of development. In this market, innovation is highly valued, new products and applications are constantly emerging, and automotive electronics technology is changing the face of the whole car. The magnetic components used in automotive electronic technology are mainly made of neodymium magnets, soft magnetic ferrite material, and metal soft magnetic material. With the development of lightweight, intelligent, and electrified vehicles, the requirement for magnetic materials is becoming higher and higher. The application of high-performance NdFeB in traditional automobiles is mainly focused on EPS and micro-motors.

1 Permanent Magnet Material in EPS Booster Motor

EPS requires high performance, weight, and volume of permanent magnet motor, so the permanent magnet material in EPS is mainly high-performance Nd-Fe-B magnet, sintered Nd-Fe-B magnet. In the EPS system, hot pressing NdFeB is expected to replace sintered NdFeB. This is because hot-pressing NdFeB has high magnetic properties, can only be made into rings, and high yield. magnet in automotive electronics

2. There is a huge space for neodymium micromotor to replace ferrite magnet

Micromotors are widely used in automobiles. Except for the starter which starts the engine of the car, the other motors distributed everywhere in the car are micro-motors. Previously, automotive micro-motors were only used as a power source for wipers, windshield washers, electric oil pumps, automatic antennas, and other components, and the number was relatively small. EPS Booster Motor

Nowadays, cars are striving for comfort and automatic handling, and micromotors have become an indispensable part of modern cars. Micromotors are required for the skylight motor, seat adjustment motor, seat belt motor, electric antenna motor, starter motor, baffle cleaning motor, cold fan motor, top lamp motor, air conditioner motor, fog lamp motor for steering linkage, electric water pump, electric oil pump, electronic air conditioner, loudspeaker, sensor (position, speed, pressure, etc.). According to the estimation of the automobile industry, each luxury car should be equipped with about 100 micromotors, at least 60 high-class cars, and at least 20 economy cars. At present, bonded NdFeB magnets are mainly used in micro-motors and sensors of medium and high-grade automobiles. With the development of automobile towards comfort, energy saving and automation, the bonded neodymium magnets used in automobile motors will increase.

About the author

Cathy Marchio

Cathy Marchio is an expert at Stanford Magnets, where she shares her deep knowledge of magnets like Neodymium and Samarium Cobalt. With a background in materials science, Cathy writes articles and guides that make complex topics easier to understand. She helps people learn about magnets and their uses in different industries, making her a key part of the company's success.

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