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Speed changing device

A technology of variable speed device and permanent magnet motor, applied in electromechanical devices, electromechanical transmission devices, electrical components, etc., can solve problems such as regular maintenance and lubrication, friction loss, mechanical noise and vibration

Active Publication Date: 2012-02-15
SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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.

Method used

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Embodiment Construction

[0019] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0020] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as...

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Abstract

The invention relates to a speed changing device, which comprises a first permanent magnet motor, a coaxial magnetic gear and a second permanent magnet motor, wherein the first permanent magnet motor, the coaxial magnetic gear and the second permanent magnet motor constitute a concentric type structure of a coaxial topological structure set. The speed changing device realizes harmonic driving and speed regulation by a magnetic field modulation effect of a non-uniform magnetic circuit. Because the coaxial magnetic gear realizes non-contact speed variable driving by the interaction of permanent magnets, the speed changing device can overcome the defects of friction loss, mechanical noise and vibration, and the need of regular maintenance and lubrication brought by the mechanical gear when the speed changing device is used for an automobile under hybrid and electric force two modes.

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...

Claims

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Application Information

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IPC IPC(8): H02K51/00
Inventor 蹇林旎徐国卿武渊源梁嘉宁
Owner SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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