Unlock instant, AI-driven research and patent intelligence for your innovation.

Rotary electric machine

A technology for rotating motors and rotating shafts, applied in electromechanical devices, electrical components, electric components, etc., can solve problems such as insufficient cooling performance, and achieve the effect of improving cooling performance

Pending Publication Date: 2021-06-18
MITSUBISHI ELECTRIC CORP
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in the rotating electrical machine disclosed in Patent Document 1, since the refrigerant passes through the edge of the coil, the refrigerant only slightly contacts the coil, and there is a problem of insufficient cooling performance.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Rotary electric machine
  • Rotary electric machine
  • Rotary electric machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0046] Hereinafter, Embodiment 1 will be described based on the drawings. In addition, in each drawing, the same code|symbol represents the same or a corresponding part.

[0047] figure 1 It is a perspective view showing the stator of the rotating electrical machine of the first embodiment. Such as figure 1 As shown, the stator 1 includes: an annular stator core 9 ; a stator winding 10 mounted on the stator core 9 ; and a ground insulating paper (not shown) mounted on the slot 22 .

[0048] The stator core 9 includes slots 22 arranged in the circumferential direction. The stator winding 10 is wound around the plurality of slots 22 . A plurality of coil side ends 24 protrude from the axial end surface of the stator core 9 . Radial gaps 21 penetrating from the inner diameter side to the outer diameter side of the coil side ends 24 are provided between the plurality of coil side ends 24 . The bus bar 13 is arranged on the inner diameter side of the plurality of coil side en...

Embodiment approach 2

[0070] Image 6 It is a front view showing the rotating electrical machine of Embodiment 2. For the second embodiment, only the differences from the first embodiment will be described, and the description of the same structure as the first embodiment will be omitted. In addition, in Image 6 In , the arrow shown toward the bus bar 13 indicates the injection direction of the refrigerant or the flow direction of the refrigerant.

[0071] Such as Image 6 As shown, in the rotating electric machine 50 according to the second embodiment, the stator 1 is arranged so that the direction of the rotating shaft 3 of the rotor 2 is located in the horizontal direction. In Embodiment 2, for example, cooling oil, that is, refrigerant is injected from the outer diameter side of the coil side end 24 toward the inner diameter side. The refrigerant is supplied, for example, from the side of a motor case (not shown) that holds the stator 1 . According to the rotary electric machine 50 of Emb...

Embodiment approach 3

[0077] Figure 7 It is an enlarged plan view showing the bus bar of the third embodiment. In the third embodiment, only the differences from the second embodiment will be described. Such as Figure 7 As shown, the bus bar 13 has a straight portion 15 , and a temperature detector 14 is provided on the straight portion 15 . Since the temperature detector 14 is disposed on the straight portion 15, it is easy to stabilize the contact state between the temperature detector 14 and the bus bar 13, so that the temperature detection accuracy is improved.

[0078] The present application describes various illustrative embodiments and examples, but the various features, forms, and functions described in one or more embodiments are not limited to specific embodiments, and can be used independently. Or be applied to the embodiment in various combinations.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

Disclosed is a rotary electric machine which is improved in cooling performance. The rotary electric machine includes a rotor; and a stator which, being disposed opposite the rotor, has a stator core having a plurality of slots therein and a stator winding wound in the plurality of slots, wherein the stator has a plurality of coil ends which are formed protruding from an axial end face of the stator core and between adjacent ones of which is provided a radial clearance passing through from the inner diameter side to the outer diameter side, and wherein the stator includes a bus bar which, being disposed on the inner diameter side of the plurality of coil ends so as to occlude the clearances between the plurality of coil ends, guides a refrigerant, which is supplied from the radial direction of the stator, to the plurality of coil ends.

Description

technical field [0001] The invention relates to a rotating electric machine. Background technique [0002] In recent years, rotating electric machines such as electric motors and generators have been required to be small in size, high in output, and high in efficiency. In order to meet these demands, distributed windings using coils with substantially rectangular cross-sections are used, especially in vehicle-mounted electric motors. Compared with the concentrated winding, the distributed winding stator has the characteristic of low noise due to the smooth distribution of the rotating magnetic field. In addition, by using a coil with a substantially rectangular cross-section, the space factor of the coil is improved compared to the case where the coil is formed by bundling round wires, thereby achieving an effect of high output. On the other hand, with the advancement of small size and high output, it is required to improve the cooling performance. [0003] As a means to ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H02K3/24H02K9/19H02K3/28H02K3/04H02K3/38H02K11/25
CPCH02K3/24H02K9/19H02K3/28H02K3/04H02K3/38H02K11/25H02K2203/06H02K2203/09H02K3/50
Inventor 江头康平长谷川和哉日野辰郎
Owner MITSUBISHI ELECTRIC CORP