Unlock instant, AI-driven research and patent intelligence for your innovation.

Stator lamination used for permanent magnet motor and motor stator

A technology of stator punching and permanent magnet motors, applied in magnetic circuits, electrical components, electromechanical devices, etc., can solve the problems of poor manufacturability of stator injection molding, achieve good manufacturability of injection molding, improve motor efficiency, and reduce vibration and noise Effect

Inactive Publication Date: 2017-09-22
GUANGDONG WELLING ELECTRIC MACHINE MFG +1
View PDF4 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a stator punching sheet for a permanent magnet motor and a motor stator, so as to overcome the problem in the prior art that the stator punching sheet with an arc-cutting structure is formed with poor manufacturability by injection molding

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
  • Stator lamination used for permanent magnet motor and motor stator
  • Stator lamination used for permanent magnet motor and motor stator
  • Stator lamination used for permanent magnet motor and motor stator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] It should be noted that, in the case of no conflict, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0026] In describing the present invention, it should be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", " The orientation or positional relationship indicated by "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is for convenience only The present invention is described and simplified descriptions do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and thus should not be construed as limiting the present invention.

[0027] The invention provides a stator punching sheet for a permanent magnet motor, such as image 3 As shown, the stator punch in...

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

The invention discloses a stator lamination used for a permanent magnet motor and a motor stator. The stator lamination comprises an annular stator yoke part (1) and a plurality of stator teeth (2) extending inwards in the radial direction of the stator yoke part (1), wherein winding slots (3) are formed among the stator teeth (2); and two ends of the tooth crest of each stator tooth (2) are externally concave in the radial direction to form a concave part (22). According to the stator lamination used and the motor stator provided by the invention, the concave parts are arranged on the tooth crests of the stator teeth, so that the injection molding manufacturing performance of the stator can be improved while the electro-magnetic exciting force, generated by the reduction of torque pulsation and the reduction of air gap harmonic flux density, of the motor stator can be facilitated and then the motor vibration noise is reduced.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a stator punching sheet for a permanent magnet motor and a motor stator. Background technique [0002] At present, for permanent magnet brushless motors (such as permanent magnet brushless motors used in drum washing machines), in order to improve the efficiency of the motor, concentrated windings with fractional slots are often used. The inherent disadvantage of the fractional slot concentrated winding is that the harmonic content of the winding magnetomotive force is relatively large. At present, in order to reduce the air gap flux density harmonics, especially to reduce the flux density harmonics and motor iron loss when the motor is running in a deep field weakening state, the method of stator or rotor arc cutting is often used (that is, the tooth top of the stator or Compared with the normal structure, the tooth tip of the rotor is partly cut off), so as to reduce the conten...

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): H02K1/16
CPCH02K1/16H02K2201/03H02K2213/03
Inventor 张浩陈金涛秦向南
Owner GUANGDONG WELLING ELECTRIC MACHINE MFG