CN213243672U

CN213243672U - Winding slot internal structure of flat wire motor

Info

Publication number: CN213243672U
Application number: CN202021882784.2U
Authority: CN
Inventors: 林中尉
Original assignee: Suzhou Amtf Robots Co ltd
Current assignee: Suzhou Amtf Robots Co ltd
Priority date: 2020-09-02
Filing date: 2020-09-02
Publication date: 2021-05-18
Anticipated expiration: 2030-09-02

Abstract

The utility model provides a high flat wire motor winding inslot structure of full rate in groove, the motor that uses this structure can have bigger power density. The structure in the winding slot of the flat wire motor winding is characterized in that at least one wire penetrating through a slot of a motor core is provided with a non-parallel surface, the non-parallel surface is a surface which is opposite to but not parallel to the slot wall of the slot, a cooling flow channel for a cooling medium to pass through is formed between the non-parallel surface and the opposite slot wall of the slot, or the non-parallel surface is a surface which is opposite to but not parallel to the surface of an adjacent wire, and a cooling flow channel for the cooling medium to pass through is formed between the non-parallel surface and the opposite surface of the adjacent wire.

Description

Winding slot internal structure of flat wire motor

Technical Field

The utility model relates to a flat wire motor winding, specifically speaking are the structure of the flat wire that constitutes the winding in the iron core wire casing.

Background

With the development of power motors, a flat-section wire motor (flat wire motor) with in-slot cooling becomes a development trend, an in-slot cooling structure becomes a key technology, and in a conventional method, an insulator is used between wires to separate the wires to form a flow channel, but the insulator is neither conductive nor magnetic conductive, so that the slot filling rate of a motor winding is reduced, the waste of motor space is caused, and the volume and weight of the motor are larger.

Disclosure of Invention

The utility model aims at providing a high flat wire motor winding inslot structure of groove fullness rate, the motor that uses this structure can have bigger power density.

Flat wire motor winding inslot structure, at least wire that passes the motor core wire casing has the non-parallel face, the non-parallel face is the face relative but not parallel with the wire casing cell wall, has formed the cooling runner that supplies cooling medium to pass through between this non-parallel face and the relative wire casing cell wall, perhaps the non-parallel face is the face relative but not parallel with adjacent wire surface, has formed the cooling runner that supplies cooling medium to pass through between this non-parallel face and the relative adjacent wire surface.

In the winding slot structure of the flat-wire motor, the conducting wire with the non-parallel surface has a parallel surface which is in contact with and parallel to the slot wall of the slot, or has a parallel surface which is in contact with and parallel to the adjacent conducting wire.

In the winding slot internal structure of the flat wire motor, the non-parallel surface is positioned at the corner of the section of the conducting wire.

In the winding slot inner structure of the flat wire motor, the non-parallel surface is a plane or an arc surface.

The non-parallel surface of the winding slot internal structure of the flat wire motor is provided with a convex part or a concave part.

In the winding slot structure of the flat wire motor, the conducting wire is provided with an insulating layer or a protective layer.

The utility model has the advantages that: the utility model discloses a wire of specific shape for formed the cooling runner between wire and wire casing cell wall or the adjacent wire, and saved conventional materials such as wire spaced insulators, consequently, the groove fullness rate of motor is higher, and the motor can have bigger power density. Of course, the wires are positioned by parallel opposite surfaces, and the wires and the groove walls are positioned by parallel opposite surfaces directly or indirectly (with insulating paper therebetween).

Drawings

Fig. 1 is a schematic view of the structure in a winding slot of a flat wire motor of embodiment 1;

FIG. 2 is a schematic cross-sectional view of a wire;

FIG. 3 is a schematic cross-sectional view of another wire;

FIG. 4 is a schematic cross-sectional view of yet another wire;

fig. 5 is a schematic view of the structure in a winding slot of a flat wire motor of embodiment 2;

fig. 6 is a schematic view of the structure in a winding slot of a flat wire motor of embodiment 3;

fig. 7 is a schematic diagram of the structure inside the winding slot of the flat wire motor of embodiment 4.

Detailed Description

Example 1:

referring to the flat wire motor winding slot interior structure shown in fig. 1, the wires 2 passing through the motor core slot 1 have the same cross-section, with non-parallel faces 21 at the four corners of the wire cross-section and parallel faces 22 at the other faces. The non-parallel surfaces 21 are not parallel to the opposite slot walls and together form a cooling flow channel 3 for the cooling medium to pass through. The opposing non-parallel surfaces 21 of adjacent wires and the slot walls together form a cooling flow channel 4 for the passage of a cooling medium.

The parallel faces 22 of the wires are in contact with and parallel to the slot walls and the opposite parallel faces 22 of adjacent wires are in contact with and parallel to each other.

The exterior of the wire is coated with an insulating varnish.

Each conductor 2 in fig. 1 may also be, as shown in fig. 2, a non-parallel surface 21 of which is a rounded arc surface; as shown in fig. 3, the non-parallel surface 21 may be a circular arc surface; alternatively, as shown in fig. 4, the non-parallel surface 21 may be a rugged irregular surface.

Example 2:

referring to the flat wire motor winding slot internal structure shown in fig. 5, each conductor 2 passing through the motor core slot 1 has the same cross section, and has non-parallel surfaces 21 at two corners of the conductor cross section, and parallel surfaces 22 at the other surfaces. The opposite non-parallel surfaces 21 of the adjacent wires and the slot walls of the slots are not parallel, and together form a cooling flow channel 4 for the cooling medium to pass through.

Example 3:

referring to the flat wire motor winding slot internal structure shown in fig. 6, unlike embodiment 2, there is a non-parallel surface 21 at one corner of the cross section of the conductor wire 2.

Example 4:

referring to the slot structure of the flat wire motor winding shown in fig. 7, there are two types of wires passing through the motor core slot 1, the cross section of the first wire 5 is rectangular, and four surfaces are parallel surfaces 52. The four corners of the cross section of the second wire 6 have non-parallel faces 61 and the other faces are parallel faces 62. The non-parallel surfaces 61 of the second wires 6 are not parallel to the opposite slot walls and together form a cooling flow channel 3 for the cooling medium to pass through. The non-parallel surface 61 of the second wire 6, the parallel surface 52 of the first wire 5 and the slot wall together form a cooling flow channel 4 for the cooling medium to pass through.

The parallel surface 52 of the first wire 5 and the parallel surface 62 of the second wire are both contacted and parallel with the slot wall of the slot, and the adjacent parallel surfaces of the first wire and the second wire are contacted and parallel.

In the above embodiments, the slot wall of the slot may be attached with insulating paper.

The conductor can be any conductor with a coating.

The non-parallel surface can be a plane, a circular arc surface, a round arc surface, a surface with bulges and/or grooves, or various surfaces with any shape capable of forming a flow passage.

The number of the non-parallel surfaces of the conductor does not influence the protection scope of the claims; the number of the non-parallel surfaces can be one or more; one wire can be provided with non-parallel surfaces, or a plurality of wires can be provided with non-parallel surfaces;

the number of wires in the raceway, the shape of the body of the wire, the insulation or protective layer structure of the wire, etc. do not affect the scope of protection of the present claims.

Claims

1. The utility model provides a flat wire motor winding inslot structure which characterized by: the non-parallel surface is a surface which is opposite to but not parallel to the slot wall of the slot and forms a cooling flow channel for the cooling medium to pass through, or the non-parallel surface is a surface which is opposite to but not parallel to the surface of the adjacent wire and forms a cooling flow channel for the cooling medium to pass through.

2. The flat wire motor winding slot interior structure of claim 1, wherein: the wires with non-parallel surfaces have parallel surfaces in contact with and parallel to the slot walls of the slot, or have parallel surfaces in contact with and parallel to adjacent wires.

3. The flat wire motor winding slot interior structure of claim 1, wherein: the non-parallel surfaces are located at the corners of the wire cross-section.

4. The flat wire motor winding slot interior structure of claim 1, wherein: the non-parallel faces are planar or arcuate faces.

5. The flat wire motor winding slot interior structure of claim 1, wherein: the non-parallel surfaces have raised or recessed portions thereon.

6. The flat wire motor winding slot interior structure of claim 1, wherein: the conductor has an insulating or protective layer.