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Motor stator groove opening structure

A motor stator and stator slot technology, which is applied to the shape/pattern/structure of magnetic circuit, the shape/pattern/structure of winding insulation, the shape/pattern/structure of winding conductor, etc., can solve the problem of increasing the height of winding wire ends, insulating paper Damage, increased cost and other problems, to achieve the effect of reducing the height of the end and facilitating the insertion of copper wires

Inactive Publication Date: 2019-07-02
BORGWARNER POWERDRIVE SYST (TIANJIN) CO CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, due to the large twisting torque, there will be a large extrusion force between the winding copper wire and the stator notch, which will cause the winding copper wire to wear and paint off, and will also damage the insulating paper of the motor stator that is insulated through insulating paper. cause damage, the existing solution is to increase the wear resistance of the twisted wire port by adding a wear-resistant layer, etc. Although it can reduce the wear when twisting the wire, adding a wear-resistant layer not only increases the cost, but also leads to an increase The height of the winding wire end is not conducive to the miniaturization of the motor

Method used

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Embodiment Construction

[0018] The concrete implementation method of the present invention is as follows:

[0019] The existing square copper wire motors are developed from card-generating motors, so the existing square copper wire motors are mostly motors with distributed winding technology, which essentially adopts segmented wave winding technology. Compared with the traditional Distributed winding motors with random embedded coils can significantly increase the occupation rate of copper wires in the slot, and can significantly reduce the height of the non-welded end windings. The process engineering generally includes: segmented copper wire forming, stator Iron core insertion, segmented copper wire insertion, copper wire twisting on the other side, copper wire welding on the other side, and insulation treatment at the welding point. However, due to the large twisting torque, the winding copper wire and the stator notch will have a large The extrusion force of the winding will cause the wear and te...

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Abstract

The invention discloses a motor stator groove opening structure. A motor stator includes a stator winding and a stator iron core. The stator winding is composed of multiple copper wires. The stator iron core is provided with multiple stator grooves. The copper wires are placed in the stator grooves. The stator grooves are of a rectangular structure. The stator core at one end of each stator grooveis expanded from the outside to the inside to form a structure with outside and narrow inside. The end openings of the stator grooves are made large by the expansion of the stator core at the ends ofthe stator grooves, which facilitates the insertion of insulation paper and the copper wires, can avoid the damage of the copper wires during twisting, and can reduce the height of the ends.

Description

technical field [0001] The invention relates to a motor stator structure, in particular to a stator slot structure of the motor stator. Background technique [0002] The stator structure of general motors is usually related to the winding structure, which can be divided into distributed winding and centralized winding stator structures. The current distributed winding stator structure is generally an integrated stator punching structure. After winding the corresponding pitch winding in advance, The distributed winding stator structure has the characteristics of small torque ripple and low harmonic content by manual insertion or machine insertion, but the winding is generally made of multiple round copper wires wound in parallel, and the bare copper in the slot occupies an area of The low efficiency and high end length are not conducive to further improving efficiency and power density; the current centralized winding stator structure includes an integral stator and a segment...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/16H02K3/34H02K3/12
CPCH02K1/165H02K3/345H02K3/12
Inventor 孔昭松
Owner BORGWARNER POWERDRIVE SYST (TIANJIN) CO CHINA
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