Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Dynamo-electric motorbicycle and electric bicycle using permanent-magnet direct current dynamo

A technology of electric motorcycles and permanent magnet DC, applied in the direction of DC commutators, electrical components, electromechanical devices, etc., can solve the problems of low power of permanent magnet DC motors, reduce the magnetic field strength of permanent magnets, and difficult to adjust the magnetic force, and achieve The effect of reducing the armature input current, solving the difficulty of starting, and saving the armature electric energy

Inactive Publication Date: 2007-03-07
邓传义
View PDF0 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there are also some DC motors that use permanent magnets instead of stator windings, due to the weak magnetic field strength of existing ordinary ferrite permanent magnets, it is difficult to make higher-power DC motors, so most of these permanent magnet DC motors smaller
Since the rare earth NdFeB permanent magnet material with high performance and strong magnetic field strength (magnetic field strength can reach 4000 Gauss), high-power permanent magnet DC motors have gradually appeared. The air gap between the motor rotor and the stator of this type of permanent magnet is difficult to optimize, and the size of the magnetic force is also difficult to adjust, resulting in difficulty in starting the motor; for this reason, many people have carried out research, and I developed a solution in 2004. That is: between the stator and the rotor in the motor, an air gap adjustment sleeve made of non-magnetic material is added (see Chinese patent 2004100468889), which successfully solves the difficult problem of starting the motor
However, since the air gap adjustment sleeve used is made of non-magnetic materials, it has a certain barrier effect on the magnetic field and reduces the magnetic field strength of the permanent magnet to do work, so that the motor generates a large amount of heat and a high temperature rise during operation. faster

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Dynamo-electric motorbicycle and electric bicycle using permanent-magnet direct current dynamo

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0011] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0012] Present embodiment is made up of motor shaft (2), outer rotor casing (15), left and right end covers (7) and (18), permanent magnet (14), outer rotor winding (16), magnetic force adjustment cover (17), Commutator (10), electric brush holder (13) and electric brush (11) constitute.

[0013] The outer rotor housing (15) is a cylinder, the center of its outer cylindrical surface is a hub rib, and the outer rotor winding (16) is installed on the inner wall of the cylinder. The outer rotor winding (16) includes a winding coil (22) and a winding yoke (21), the winding coil (22) is embedded in the slot of the winding yoke (21), and the winding yoke (21) is fixed on the barrel of the outer rotor casing (15) on the inner wall. On the left side of the outer rotor winding (16), a commutator (10) connected to the winding coil (22) is installed.

[0014] ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

This invention discloses one electrical motor and automatic cycle permanent magnetic direct current motor in mechanic product, which comprises the following parts: motor axis, rotor shell, left and right end cover, permanent magnetic iron, and outer roller set, magnetic force adjusting cover, switcher and electrical brush.

Description

technical field [0001] The invention relates to a permanent magnet DC motor, in particular to a permanent magnet DC motor for electric motorcycles and electric bicycles. Background technique [0002] For a long time, DC motors have been designed with two windings, the stator winding and the rotor winding, so that a higher-power DC motor can be made. Although there are also some DC motors that use permanent magnets instead of stator windings, due to the weak magnetic field strength of existing ordinary ferrite permanent magnets, it is difficult to make higher-power DC motors, so most of these permanent magnet DC motors smaller. Since the rare earth NdFeB permanent magnet material with high performance and strong magnetic field strength (magnetic field strength can reach 4000 Gauss), high-power permanent magnet DC motors have gradually appeared. The air gap between the motor rotor and the stator of this type of permanent magnet is difficult to optimize, and the size of the m...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H02K23/04
Inventor 邓传义王明喜
Owner 邓传义
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com