Gear change mechanism

Abstract

The invention relates to a gear change mechanism comprising a first switched reluctance motor and a second switched reluctance motor, wherein the first switched reluctance motor comprises a first stator and a first rotor which is contained in the first stator; a first rotating shaft and a coaxial magnetic gear are arranged on the first rotor; the coaxial magnetic gear successively comprises an inner rotor, a magnetism adjustment ring and an outer rotor from inside to outside; a permanent magnet pole pair is arranged at one side, near the magnetism adjustment ring, of each one of the inner rotor and the outer rotor; the outer rotor is connected with the first rotating shaft; the magnetism adjustment ring consists of a magnetism adjustment iron block and is provided with an input shaft; the second switched reluctance motor comprises a second stator and a second rotor which is contained in the second stator; and the second rotor is fixedly connected with the inner rotor. In the gear change mechanism, the harmonic drive and the speed regulation are realized depending on the magnetic field modulation effects of an inhomogeneous magnetic circuit. The non-contact variable transmission is realized by using the mutual effect of the permanent magnet by the coaxial magnetic gear, therefore, the defects of wear loss, mechanical noise, vibration and the like which are caused by a mechanical gear can be overcome when the gear change mechanism provided by the invention is applied to automobiles in a hybrid power mode and an electric power mode.

Description

【Technical field】 [0001] The invention relates to an automobile technology, in particular to a speed change device. 【Background technique】 [0002] A hybrid electric vehicle is equipped with two power sources, namely a conventional engine and a power storage battery. Generally, hybrid electric vehicles tend to choose the hybrid power coupling method because there are more energy transmission routes, but the structure tends to be complicated due to the separation and mixing of power. At present, general hybrid electric vehicles use mechanical gears such as planetary gears and two motors to form a variable speed transmission system. [0003] However, since planetary gears rely on the meshing of metal teeth to transmit torque, this sticky mechanism inevitably brings many problems, such as friction loss, mechanical noise and vibration, and the need for regular maintenance and lubrication. 【Content of invention】 [0004] In view of the above situation, it is necessary to prov...

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Problems solved by technology

[0003] However, since planetary gears rely on the meshing of metal teeth to transmit torque, this adhesion mechanism inevitably brings many problems, such as friction loss, mechanical noise and vibration, and the need for regular maintenance and lubrication, etc.

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