Brushless claw-pole power generator with external retainer

Abstract

The invention discloses a brushless claw-pole power generator with an external retainer. The brushless claw-pole power generator with the external retainer comprises a shell and an excitation iron core in the shell, an excitation winding is wound on the excitation iron core, a mandrel I and a mandrel II are arranged at the centers of left and right ends of the excitation iron core respectively, a stator winding is fixed onto the inner wall of the shell, the retainer is mounted on the right end face of the outer wall of the shell, the mandrel I is fixedly arranged at the left end of the inner wall of the shell, and the mandrel II penetrates the right end of the shell to be fixedly arranged on the retainer. A left claw pole and a right claw pole are rotatable and in opposite arrangement and externally sleeves the excitation iron core in the shell, cylindrical left and right transmission shafts are fixedly arranged at the centers of the outer end faces of the left and right claw poles respectively, and the right transmission shaft externally sleeves the mandrel II and penetrates out of the right end of the shell. Annular nonmagnetic rings are mounted at the outer edges of the outer end faces of the left claw pole and the right claw pole respectively. The brushless claw-pole power generator with the external retainer has the advantages that abrasion caused by an electric brush is avoided, service life of the power generator is prolonged, and the problems of short circuit, aging of parts, fire hazards and the like are prevented.

Description

technical field [0001] The invention relates to the field of generators, in particular to an external cage type brushless claw pole motor. Background technique [0002] The existing claw pole generator mainly includes the stator on the shell and its inner wall, the rotor and the excitation coil on it, and the claw poles. A brush is installed between the shell and the rotor. The field coil is energized, thereby forming a magnetic flux to the claw poles at both ends of the field coil. When working, under the drive of the power unit of the vehicle, the magnetic field on the claw pole of the rotor and its surface starts to rotate, and the stator winding cuts the magnetic induction line, thereby generating current to the outside. The claw pole generator with this structure has the following disadvantages: [0003] 1. During the long-term rotation of the brush, it will cause wear, reduce the working efficiency of the generator and shorten the service life of the generator. [0...

AI Technical Summary

Problems solved by technology

[0003] 1. During the long-term rotation of the brush, it will cause wear, reduce the working efficiency of the generator and shorten the service life of the generator

[0004] 2. The powder from the brush wear will cause a short circuit to the brush and the internal electronic components of the motor

[0005] 3. The brush will generate heat and sparks during the wear process, which will accelerate the aging of surrounding components and cause fires to vehicles using fuel

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