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Method of forming stator coils of electric machinery

A technology of stator coils and stators, which is applied in the manufacture of motor generators, electrical components, electromechanical devices, etc., can solve the problems of motor performance degradation, magnetic loss, and decrease in duty cycle, and achieve improved duty cycle, improved performance, and low The effect of production costs

Inactive Publication Date: 2012-07-11
SHINANO KENSHI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, neat winding cannot be performed and the space factor will decrease
[0013] In the method disclosed in Japanese Laid-Open Patent Publication No. 2001-54265, a divisible core is used so that the coil can be easily wound, but the production steps and production cost increase
In addition, magnetic losses occur at the connection parts between the divided core parts, so that the performance of the motor will be degraded

Method used

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  • Method of forming stator coils of electric machinery
  • Method of forming stator coils of electric machinery
  • Method of forming stator coils of electric machinery

Examples

Experimental program
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Effect test

no. 1 example

[0057] will see Figures 1A-1D etc. to describe the first embodiment of the method of the present invention. In the present embodiment, the circular stator core 2 has an even number (for example, 12) of tooth portions (magnetic pole portions) 3 protruding radially inward from the stator core 2 . A motor coil (stator coil) 6 is formed on the tooth portion 3 by winding a coil wire in multiple layers on the tooth portion 3 covered with the insulator 4 such that the coil 6 is formed in the slot 5 . The insulator 4 covering the tooth portion 3 has partition walls 4 a each dividing each slot 5 into a longitudinal inner portion (inner slot 5 a ) and a longitudinal outer portion (outer slot 5 b ). Such as Figure 5B As shown, in each slot 5, partition walls 4a protrude from the insulator 4, and a gap corresponding to a dead space S for inserting a nozzle of a wire reel (not shown) is formed between the partition walls 4a. Note that the motor coil 6 is wound in multiple layers with ...

no. 2 example

[0074] will see Figures 2A-2D etc. to describe the second embodiment of the method of the present invention. Note that the structural elements described in the first embodiment are denoted by the same reference numerals, and their explanations will be omitted.

[0075] exist Figure 2A , start winding coils from V1-, U2-, W2-, V3-, U4-, and W4-phases. Insert the nozzle of the winding machine into the outer slot 5b of the slot 5 formed around the tooth portion 3 in the direction of stacking the stator cores (the direction parallel to the axial direction of the motor), so that each other is spaced in the outer slot 5b. The second coils 6b are formed one by one. That is, the second coils 6 b are provided every other in the circumferential direction of the circular stator core 2 . Note that coils can be wound starting from U1-, W1-, V2-, U3-, W3-, and V4-phases.

[0076] Such as Figure 5A and 5B As shown, in the outer slot 5b corresponding to the tooth portion 3 of the V1...

no. 3 example

[0086] will see Figure 3A-3D etc. to describe the third embodiment of the method of the present invention. Note that the structural elements described in the foregoing embodiments are denoted by the same reference numerals, and their explanations will be omitted.

[0087] exist Figure 3A Among them, coils are wound from teeth 3 of V1-, U2-, W2-, V3-, U4-, and W4-phases. Insert the nozzle of the winding machine into the outer slot 5b of the slot 5 formed around the tooth portion 3 in the direction of stacking the stator cores (the direction parallel to the axial direction of the motor), so that each other is spaced in the outer slot 5b. The second coils 6b are formed one by one. That is, the second coils 6 b are provided every other in the circumferential direction of the circular stator core 2 . Note that coils can be wound starting from U1-, W1-, V2-, U3-, W3-, and V4-phases.

[0088] exist Figure 3A , 16T coil wire is wound in the U2- and U4-phase outer slots 5b. N...

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Abstract

The method is capable of forming stator coils in dead spaces, into which a nozzle of a wire coiling machine is inserted, and improving space factor of the coils. The method comprises the steps of: regular-winding a coil wire in vacant longitudinal outer parts of slots alternately, without getting into spaces for inserting the nozzle of the wire coiling machine; regular-winding the coil wire in the rest vacant longitudinal outer parts of the slots and the spaces for inserting the nozzle; regular-winding the coil wire in vacant longitudinal inner parts of the slots alternately, without getting into spaces for inserting the nozzle; and regular-winding the coil wire in the rest vacant longitudinal inner parts of the slots and the spaces for inserting the nozzle.

Description

technical field [0001] The invention relates to a method of forming stator coils of an electric machine. Background technique [0002] An electrical machine, such as an electric motor, has a rotor and a stator. The stator includes a stator core having teeth, and coil wires (ie, magnet wires) are wound on the teeth covered with insulators to form stator coils. In order to improve the performance of the motor, a large number of coil wires are wound in gaps to highly improve the space factor of the coils, and each gap is formed between adjacent tooth portions. [0003] Usually, the nozzle of the wire winding machine is inserted into the gap formed between the adjacent teeth in the direction of stacking the stator cores to wind the coil wire on the teeth, so the coil wire cannot be wound on the nozzle. Insert and move in the gap. For example, in Figure 12A Among them, the coils 54 are respectively wound on the tooth portions 52 a and 52 b of the stator core 51 , and the toot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K15/085
CPCH02K3/522H02K15/095Y10T29/49073Y10T29/49012Y10T29/49009Y10T29/49071
Inventor 丸山将见
Owner SHINANO KENSHI
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