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In the past, automobile micro-motors were only used as the power source for wiper, windshield washer, electric oil pump, automatic antenna and other components, and the number was relatively small. And now the cars focus on the pursuit of passenger comfort and automatic control, micro-motors have become an indispensable part of modern cars. Some cars are equipped with more than 20 micro DC motors. Whether the movable equipment is for circular movement, lateral swing, or linear movement, micro motors are generally used as the power source. For example, the position of the power seat cushion is moved, the angle of the backrest and headrest is changed, the swing of the rearview mirror, the washing of the headlights, the opening and closing of the glass windows, the operation of the power door lock, the rotation of the cooling fan of the water tank, etc.
Automotive miniature DC motors, as the name suggests, are miniaturized DC motors with power generally below 100 watts. Due to the special requirements of automobile operation and the harsh environment, the user's requirements for automobile micro-motors are harsh. For the motor, the key to the quality of the motor is the magnetic material of the movement, in addition to the design structure and processing technology. At present, the new motor used in the car adopts a permanent magnet material containing rare elements. Its main components are iron, brick, iron, etc. Its magic lies in its strong magnetism. No matter what shape it is processed into, the magnetism is stronger than ordinary The ferromagnetic material is 2~10 times stronger, which means that the motor made of this permanent magnet material has high power, small size, light weight and high efficiency. If this kind of micro motor is used in large quantities in the car, the weight of the whole vehicle will be relatively reduced. , which is equivalent to increasing the carrying capacity.
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