Production method of claw pole type permanent-magnet stable-voltage electric generator

Abstract

The invention provides a production method of a claw pole type permanent-magnet stable-voltage electric generator and belongs to the technical field of automotive electrical machines and electric appliances. The production method comprises rotor assembly, stator assembly, end cover machining, voltage stabilizer assembly and complete machine assembly. The claw pole of a rotor converts an axial magnetization type magnetic field into a radial magnetic field, magnetic performance is good, and magnetization is uniform. A stator punched sheet is a round punched sheet formed by three equant sheets, and the utilizing rate of materials is high. A circuit board is encapsulated in a shell body of a voltage stabilizer with 191# unsaturated polyester resin, and then dust resistance, moisture resistance, vibration resistance and shock resistance are achieved. The electric voltage stabilizer enables the output voltage of the permanent-magnet electric generator to be stable under variable-speed and variable-load working conditions, and then the safety and using reliability of the automotive electric appliances are guaranteed.

Description

Technical field [0001] The invention provides a production method of a claw pole type permanent magnet stabilized voltage generator, which belongs to the technical field of automobile electrical appliances. Background technique [0002] The current production method of permanent magnet generators used in automobiles is that the rotor is assembled with a shaft and a full cylindrical permanent magnet, and then the cylindrical permanent magnet is magnetized in the radial direction to form a permanent magnet with N poles and S poles arranged at intervals. In the magnetic rotor, during the magnetization process, the magnetic molecules cannot be completely arranged in an orderly manner, the residual magnetic induction intensity is low, and because a part of the permanent magnetic material between the poles of the cylindrical permanent magnet does not work, the permanent magnet of this structural form of the rotor The material utilization rate is low, and because the permanent magnetic ...

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Problems solved by technology

[0002] At present, the production method of the permanent magnet generator used in automobiles is that the rotor is assembled with a shaft and a full cylindrical permanent magnet, and then the cylindrical permanent magnet is magnetized in the radial direction to form a permanent magnet with N poles and S poles arranged at intervals. For the magnetic rotor, during the magnetization process, the magnetic molecules cannot be completely arranged in an orderly manner, and the residual magnetic induction intensity is low, and because a part of the permanent magnet material between the magnetic poles of the entire cylindrical permanent magnet does not work, the permanent magnet of the rotor with this structure The material utilization rate is low, and because the permanent magnetic field is a constant magnetic field, the magnetic field cannot be adjusted, the output voltage is low at low speed, the output voltage is high at high speed, and the output voltage is unstable, resulting in damage to the electrical equipment of the car or shortening the service life. Performance needs to be further improved

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