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High-overlying-coefficient stator iron core preparation method and stator iron core

A technology of stator core and lamination coefficient, which is applied in the field of motor components, can solve problems such as small lamination coefficient, increased alternating magnetic flux loss, and short circumferential length of stator core, so as to improve lamination coefficient, shaft The effect of increasing the effective length and shortening the production cycle

Pending Publication Date: 2019-05-10
BEIDOU AEROSPACE AUTOMOBILE BEIJING CO LTD
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a high lamination factor stator core preparation method and the stator core, the stator core produced by the high lamination factor stator core preparation method can solve the problem of silicon steel fragmentation in the prior art Both the upper surface and the lower surface are provided with insulating layers, laminated together, the length of the stator core along the circumferential direction is short, the lamination coefficient is small, and the technical problem of increasing the loss of alternating magnetic flux

Method used

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  • High-overlying-coefficient stator iron core preparation method and stator iron core
  • High-overlying-coefficient stator iron core preparation method and stator iron core

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Embodiment 1

[0032] Such as figure 1 As shown, this embodiment provides a method for preparing a stator core with a high lamination factor, including the following steps:

[0033] S1) Prepare a plurality of stator punches with insulation layers coated on both sides and a plurality of stator punches with no insulation layers on both sides; wherein, the thickness of each insulation layer is the same;

[0034] S2) A plurality of stator punches coated with insulating layers on both sides and a plurality of stator punches not coated with insulation layers are arranged alternately, and a stator core with a high lamination coefficient is manufactured through a lamination process.

[0035] Specifically, the material of the stator punching sheet is silicon steel, which is prepared by silicon steel sheet; the thickness of the insulating layer is 0.005mm-0.015mm, and the thickness of the insulating layer is preferably 0.01mm in this embodiment to ensure the insulating performance; the material of the...

Embodiment 2

[0043] The invention provides a method for preparing a stator core with a high lamination coefficient, comprising the following steps:

[0044] S101) preparing a plurality of stator punches coated with an insulating layer on one side; wherein, each insulating layer has the same thickness;

[0045] S102) Sequentially sorting a plurality of stator stamping sheets coated with an insulating layer on one side, and manufacturing a stator core with a high lamination coefficient through a lamination process.

[0046] Specifically, the material of the stator punching sheet is silicon steel; the thickness of the insulating layer is 0.005mm-0.015mm, and the preferred thickness of the insulating layer in this embodiment is 0.01mm to ensure the insulation performance; the material of the insulating layer includes phosphoric acid-chromic acid paint, resin - At least one of chromic acid-based paint or insulating glue. In this embodiment, the phosphoric-chromic acid-based paint is preferably ...

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Abstract

The invention relates to the technical field of motor parts, and particularly relates to a high-overlying-coefficient stator iron core preparation method and a stator iron core. The method comprises the steps of preparing a plurality of stator punching sheets with the two sides coated with insulating layers and a plurality of stator punching sheets with the two sides not coated with the insulatinglayers, wherein the insulating layers are same in thickness; and alternately sorting the stator punching sheets with the two sides coated with the insulating layers and the stator punching sheets with the two sides not coated with the insulating layers, and preparing the a high-overlying-coefficient stator iron core through an overlying process. According to the high-overlying-coefficient statoriron core preparation method and the stator iron core, the stator iron core prepared with the high-overlying-coefficient stator iron core preparation method solves the technical problem that the lossof alternating magnetic flux is increased because the insulating layers are arranged on the upper surface and the lower surface of a silicon steel sheet and are overlaid into a whole, and the stator iron core cannot be effectively utilized along the circumferential length and is small in overlying coefficient in the prior art.

Description

technical field [0001] The invention relates to the technical field of motor components, in particular to a method for preparing a stator iron core with a high lamination coefficient and the stator iron core. Background technique [0002] As an important material of the motor, the silicon steel sheet is widely used in the stator and rotor core, as an important part of the magnetic circuit and the carrier of the magnetic field. The AC motor generates alternating magnetic flux in the silicon steel sheet, which will generate eddy current and eventually cause loss. Although this eddy current cannot be avoided, it can be weakened, because the larger the path of the eddy current, the greater the loss, so the loss can be reduced by reducing the path of flow. [0003] The existing technology is to divide the silicon steel into pieces, and coat the upper surface and the lower surface of each silicon steel piece with an insulating layer, and then laminate several silicon steel sheets...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K15/02H02K15/10
Inventor 刘贵生吕佳明刘志钢吴庆国吕学文许嘉慧
Owner BEIDOU AEROSPACE AUTOMOBILE BEIJING CO LTD
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