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Stator of a rotating electrical machine

A technology for rotating electrical machines and stators, which is applied in the shape/style/structure of motors, electric vehicles, and winding insulation, and can solve problems such as poor cooling efficiency of slots

Active Publication Date: 2021-05-11
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in the method of cooling by supplying refrigerant to the outside of the stator core or the coil ends, the cooling efficiency of the inside of the slot is not good.

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0044] Hereinafter, an embodiment of a stator of a rotating electrical machine according to the present invention will be described with reference to the drawings. It should be noted that, in the drawings, symbol RD denotes the radial direction of the stator, symbol AD ​​denotes the axial direction of the stator, and reference symbol CD denotes the circumferential direction of the stator.

[0045]

[0046] Such as Figure 1 ~ Figure 3 As shown, the stator 10 of the rotating electric machine includes a stator core 11 , a coil 15 , and a cooling mechanism 40 which will be described later for cooling the coil 15 .

[0047]

[0048] Such as figure 1 As shown, the stator core 11 is, for example, an annular member formed by laminating a plurality of annular electromagnetic steel sheets. The stator core 11 has a plurality of slots 12 arranged at equal intervals along the circumferential direction CD of the stator core 11 on its inner peripheral surface. The slot 12 is constitu...

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PUM

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Abstract

The present invention provides a stator of a rotating electric machine capable of effectively cooling the inside of a slot. A stator (10) of a rotating electrical machine includes: a stator core (11) formed with a plurality of slots (12); and a coil (15) including a plurality of coil segments inserted into the slots (12). In each slot (12), at least one group of the first coil segment (20) and the second coil segment (30) are radially overlapped, and the first coil segment (20) and the second coil segment (30) A refrigerant pipe (41) through which refrigerant passes is disposed on the overlapping surfaces (21a, 31a), and the refrigerant pipe (41) has insulation properties.

Description

technical field [0001] The present invention relates to a stator of a rotating electric machine that can be mounted, for example, on an electric vehicle, a hybrid vehicle, or the like. Background technique [0002] The stator of the rotating electrical machine includes a stator core and a coil attached to the stator core. In recent years, there has been known a so-called segmented conductor type rotating electrical machine in which, as a coil, a coil loop is formed by joining a plurality of coil segments (refer to Patent Document 1). [0003] In order to increase the power of such a rotating electrical machine, it is necessary to cool the coils that generate heat. Conventionally, as a cooling method for a rotating electrical machine, a method of supplying a refrigerant such as water or oil to the outside of the stator core or to the coil ends for cooling has been often used. [0004] prior art literature [0005] Patent Document 1: Japanese Patent Laid-Open No. 2006-21177...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K3/24H02K3/34
CPCH02K3/24H02K3/34Y02T10/64
Inventor 奈须野佑仁亚
Owner HONDA MOTOR CO LTD