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Stator of a rotating electrical machine

A technology for rotating electrical machines and stators, which is applied to electric components, electromechanical devices, electrical components, etc., can solve the problems of wrong sequence assembly and low productivity, and achieve the effects of improving productivity, reducing eddy current, and reducing eddy current loss.

Active Publication Date: 2021-07-16
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the stator of the rotating electrical machine of Patent Document 1, it is necessary to use at least two kinds of coils, that is, coils with magnetic layers and coils without magnetic layers. Coils with magnetic layers and coils without magnetic layers are arranged alternately, so there is a problem that the coils may be assembled into the slots in the wrong order, resulting in low productivity.

Method used

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  • Stator of a rotating electrical machine
  • Stator of a rotating electrical machine
  • Stator of a rotating electrical machine

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no. 1 approach

[0043] First, refer to Figure 1 to Figure 8 The stator of the rotating electric machine according to the first embodiment of the present invention will be described.

[0044] Such as figure 1 As shown, the stator 10 of the rotating electric machine according to this embodiment includes a stator core 12 and a coil 20 formed by laminating a plurality of annular electromagnetic steel sheets made of a magnetic material. The stator core 12 includes a plurality of teeth 14 protruding radially inward at predetermined intervals along the circumferential direction, and slots 16 serving as spaces between adjacent teeth 14 .

[0045] The coil 20 has segment coils 21 to 28 stacked from the inside to the outside in the radial direction in the slot 16 . The segment coils 21 to 28 are conductors covered with insulation. Each of the segment coils 21 to 28 has, for example, a substantially rectangular cross-sectional shape and a substantially crankshaft shape, and has protruding portions p...

no. 2 approach

[0069] Next, refer to Figure 9 ~ Figure 10 The stator 10 of a rotating electrical machine according to a second embodiment of the present invention will be described. In addition, in the following description, the same code|symbol is attached|subjected to the same component as the stator 10 of the electric rotating machine of 1st Embodiment, and description is abbreviate|omitted or simplified.

[0070] Such as Figure 9 As shown, in the slot 16 of the stator 10 of the rotating electric machine according to this embodiment, four sheets of insulating paper 31 to 34 made of insulating members are provided from the inside to the outside in the radial direction. One of the four sheets of insulating paper 31, when viewed from the axial direction of the stator core 12, the left side wall 16c of the slot 16, the opening 16b side, and the right side wall 16a surround the outer peripheral portion of the segment coil 21, and the segment coil 21 and The segment coils 22 pass through an...

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Abstract

The present invention provides a stator for a rotating electric machine capable of reducing eddy current loss and excellent in productivity. A stator (10) of a rotating electric machine is provided with: a stator core (12) formed with a plurality of slots (16); and a coil (20) including a segmented coil inserted into each of the plurality of slots (16) (21~28), in each slot (16), at least one piece of insulating paper (31) is configured to surround more than two segmented coils (21, 22) when viewed from the axial direction, and at least one A magnetic body layer (41) is arranged on the insulating paper (31).

Description

technical field [0001] The present invention relates to a stator of a rotating electrical machine, and more particularly to a stator of a rotating electrical machine including a coil including a plurality of segmented coils in slots. Background technique [0002] Conventionally, there is known a rotating electrical machine in which eddy current loss due to leakage magnetic flux is reduced. For example, Patent Document 1 discloses a stator for a rotating electrical machine, in which coils with magnetic layers and coils without magnetic layers are alternately arranged along the radial direction of the slots, thereby increasing the space factor and reducing the Eddy current loss. [0003] prior art literature [0004] Patent Document 1: Japanese Patent Laid-Open No. 2014-057460 [0005] However, in the stator of the rotating electrical machine of Patent Document 1, at least two types of coils, namely, coils with a magnetic layer and coils without a magnetic layer, need to be...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K3/12H02K3/34H02K3/42
CPCH02K3/12H02K3/345H02K3/42
Inventor 井上雅志
Owner HONDA MOTOR CO LTD