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The rapid development of automotive micromotors to thinner, shorter and more efficient
2020-04-20 11:38
The rapid development of science and technology has driven the development of automotive intelligence. Automotive micromotors are widely used in various systems and components of automobiles/new energy vehicles to meet consumers' requirements for comfort. Therefore, automotive micromotors will move towards thinner, shorter, more efficient, brushless and motorized DSPs.
1. More light and short
The shape of automotive micromotors is developing in the direction of flat, disc, light and short to meet the needs of the specific environment of the car. In order to reduce the overall size, first consider the use of high-performance neodymium iron boron permanent magnet materials. For example, the magnet weight of a 1000W ferrite starter is 220g, and the weight of neodymium iron boron magnet steel is only 68g. The solution of combining the starter motor and the generator into one is adopted, which is half the weight of the separation. Cooled wound rotor and printed wound rotor permanent magnet DC motors have been developed at home and abroad, and can also be used for cooling and ventilation of engine water tanks and air conditioning condensers. Lihui's magnetic pump motor is a permanent magnet DC motor, specially designed for the battery cooling system of new energy vehicles. Flat permanent magnet stepper motors can be used in various electronic devices, such as car speedometers and price counters. Japan has introduced an ultra-thin centrifugal fan motor with a thickness of only 20mm, which can be installed on a small frame for ventilation and cooling.
2. More efficient
The wiper motor improves the structure of the reducer, which greatly reduces the load of the motor bearing (reduced by 95%), reduces the volume, reduces the weight by 36%, and increases the motor torque by 25%. Currently, most automotive micromotors use ferrite magnets. With the improvement of the cost performance of neodymium iron boron magnets, they will replace ferrite magnets, which will definitely make automotive micromotors lighter and more efficient.
3. Brushless
According to the requirements of automobile control and drive automation, reduce the failure rate, eliminate radio interference, etc., with the support of high-performance permanent magnet materials, power electronics technology and microelectronics technology, permanent magnet DC motors of various specifications are developing in the direction of brushless.
4. DSP motor control
In high-end luxury cars, engine control, automatic speed control, anti-skid braking control, steering control, vehicle floating control, automatic transmission control, etc., all use DSP-controlled micro-motors (some electronic control parts are placed on the end cover of the motor, So that the control unit and the motor are integrated together). By understanding how many car micromotors the car is equipped with, it is possible to observe the level of car configuration and the level of comfort and luxury. In today's period of rapid growth in automotive demand, the application of automotive motors is becoming wider and wider, and the influx of foreign capital has also intensified the competition in the automotive micro-motor industry. The motor will also make a great contribution in the field of automotive electronics.
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