CN218920105U

CN218920105U - Flat wire motor stator assembly and flat wire motor

Info

Publication number: CN218920105U
Application number: CN202320117561.4U
Authority: CN
Inventors: 苏德培; 马玲; 韩牧君
Original assignee: Tianjin Songzheng Intelligent Equipment Co ltd
Current assignee: Tianjin Songzheng Intelligent Equipment Co ltd
Priority date: 2023-02-06
Filing date: 2023-02-06
Publication date: 2023-04-25
Anticipated expiration: 2033-02-06

Abstract

The utility model relates to the technical field of motors, and particularly discloses a flat wire motor stator assembly and a flat wire motor, wherein the flat wire motor stator assembly comprises a stator core and a plurality of flat wire conductors, a plurality of rectangular grooves are uniformly distributed on the inner peripheral surface of the stator core around the axial direction of the stator core in a concave manner, and the rectangular grooves are obliquely arranged in the clockwise direction and form a preset angle a with the axis of the stator core; the flat wire conductor is U-shaped structure, and the flat wire conductor includes connecting portion, two grafting portions and two outer tip, and the one end of two grafting portions is connected with the both ends of connecting portion respectively, and the other end of two grafting portions is connected with two outer tip respectively, and two grafting portions insert different rectangle grooves, and the axis of grafting portion is parallel with the axis of corresponding rectangle groove, and connecting portion and two outer tip all are located outside the stator core. The above features reduce the amplitude of each subharmonic of the electromagnetic torque of the motor. The electromagnetic vibration and noise of the flat wire motor can be reduced by effectively reducing the influence of harmonic waves and cogging torque in the air gap flux density.

Description

Flat wire motor stator assembly and flat wire motor

Technical Field

The utility model relates to the technical field of motors, in particular to a flat wire motor stator assembly and a flat wire motor.

Background

Along with the acceleration of the new energy automobile industry, as a 'power heart' of the new energy automobile, the motor directly determines important index performances such as climbing, acceleration, highest speed and the like of the automobile. The flat wire motor is used as a new technical trend of the current new energy automobile motor, and the development direction of the future passenger car motor is determined. The flat wire motor is a core component of a new energy automobile, has the advantages of high power density, compact structure and the like, and is a novel motor technology with innovative significance.

The traditional flat wire motor is generally a straight slot stator assembly, and has the problems of large tooth harmonic potential, high waveform distortion rate, large cogging torque, large noise during operation and the like in the using process.

Disclosure of Invention

The utility model aims at: the flat wire motor stator assembly and the flat wire motor are provided to solve the problems of large tooth harmonic potential, high waveform distortion rate, large cogging torque and large noise during operation of the straight slot stator assembly in the related technology.

In one aspect, the present utility model provides a flat wire motor stator assembly comprising:

the stator core is characterized in that a plurality of rectangular grooves are uniformly distributed on the inner peripheral surface of the stator core around the axial direction of the stator core in a concave manner, and the rectangular grooves are obliquely arranged in the clockwise direction and form a preset angle a with the axis of the stator core;

the flat wire conductors are of U-shaped structures, each flat wire conductor comprises a connecting portion, two plug-in portions and two outer end portions, one end of each plug-in portion is connected with two ends of the corresponding connecting portion, the other end of each plug-in portion is connected with two outer end portions, the plug-in portions are inserted into different rectangular grooves, the axes of the plug-in portions are parallel to the axes of the corresponding rectangular grooves, the connecting portions and the two outer end portions are located outside the stator core, and the two outer end portions are arranged along the circumferential inclination of the stator core and form a preset angle b with the axes of the stator core.

As a preferable technical scheme of the flat wire motor stator assembly, the preset angle a is within the range of 1-30 degrees.

As the preferential technical scheme of flat wire motor stator module, still include a plurality of insulating sleeve, a plurality of insulating sleeve one-to-one inserts and locates a plurality of rectangular inslot, the grafting portion in the rectangular inslot inserts and locates corresponding in the insulating sleeve in the rectangular inslot.

As a preferred technical scheme of the flat wire motor stator assembly, the insulating sleeve is folded into a rectangular tubular structure by insulating paper.

As a preferable technical scheme of the flat wire motor stator assembly, the insulating sleeve and the stator core are solidified through glue.

As the preferable technical scheme of the flat wire motor stator assembly, the stator core is formed by stacking and laminating a plurality of stator punching sheets.

As the preferable technical scheme of the flat wire motor stator assembly, the outer peripheral surface of the stator punching sheet is concavely provided with a limit groove;

when a plurality of stator punching sheets are stacked, a plurality of limiting grooves are surrounded to form a chute, and the angle of the chute is equal to the preset angle a of the rectangular groove.

As the preferable technical scheme of the flat wire motor stator assembly, the stator punching sheet is manufactured by stamping and forming.

As a preferable technical scheme of the flat wire motor stator assembly, the flat wire conductor is integrally formed.

In another aspect, the present utility model provides a flat wire motor comprising a flat wire motor stator assembly according to any of the above aspects.

The beneficial effects of the utility model are as follows:

the utility model provides a flat wire motor stator assembly and a flat wire motor, wherein the flat wire motor stator assembly comprises a stator core and a plurality of flat wire conductors, a plurality of rectangular grooves are uniformly distributed on the inner peripheral surface of the stator core around the axial direction of the stator core in a concave manner, and the rectangular grooves are obliquely arranged in the clockwise direction and form a preset angle a with the axis of the stator core; the flat wire conductor is U-shaped structure, and the flat wire conductor includes connecting portion, two grafting portions and two outer tip, and the one end of two grafting portions is connected with the both ends of connecting portion respectively, and the other end of two grafting portions is connected with two outer tip respectively, and two grafting portions insert different rectangle grooves, and the axis of grafting portion is parallel with the axis of corresponding rectangle groove, and connecting portion and two outer tip all are located outside the stator core, and two outer tip are along stator core's circumference slope setting and are preset angle b with stator core's axis. When the flat wire motor assembled with the flat wire motor stator assembly works, the rectangular groove and the axis of the stator core form a preset angle a, so that the amplitude of each subharmonic of the electromagnetic torque of the motor is reduced. The electromagnetic vibration and noise of the flat wire motor can be reduced by effectively reducing the influence of harmonic waves and cogging torque in the air gap flux density.

Drawings

Fig. 1 is a schematic structural view of a stator assembly of a flat wire motor according to an embodiment of the present utility model;

fig. 2 is a schematic diagram of a second structural view of a stator assembly of a flat wire motor according to an embodiment of the present utility model;

fig. 3 is a schematic structural view of a stator assembly of a flat wire motor according to an embodiment of the present utility model;

FIG. 4 is an exploded view of a flat wire motor stator assembly in accordance with an embodiment of the present utility model;

fig. 5 is a schematic structural view of a stator core according to an embodiment of the present utility model;

fig. 6 is a schematic structural view of a flat wire conductor according to an embodiment of the present utility model;

fig. 7 is a schematic diagram of a flat wire conductor according to a second embodiment of the present utility model;

fig. 8 is a schematic structural view of an insulating sleeve according to an embodiment of the present utility model;

fig. 9 is a schematic structural diagram of a bending tool for processing a flat wire conductor in an embodiment of the present utility model;

fig. 10 is a schematic structural diagram of an arc pressing tool for processing a flat wire conductor in an embodiment of the utility model.

In the figure:

100. bending tools; 200. arc pressing tool;

1. a stator core; 11. rectangular grooves; 12. a chute;

2. a flat wire conductor; 21. a connection part; 22. a plug-in part; 23. an outer end portion;

3. an insulating sleeve.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first location" and "second location" are two distinct locations and wherein the first feature is "above," "over" and "over" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is level above the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

As shown in fig. 1 to 10, the present embodiment provides a flat wire motor stator assembly, which includes a stator core 1 and a plurality of flat wire conductors 2, wherein a plurality of rectangular grooves 11 are uniformly and concavely arranged on the inner peripheral surface of the stator core 1 around the axial direction of the stator core 1, and the rectangular grooves 11 are obliquely arranged in the clockwise direction and form a preset angle a with the axis of the stator core 1; the flat wire conductor 2 is U-shaped structure, the flat wire conductor 2 includes connecting portion 21, two grafting portion 22 and two outer tip 23, the one end of two grafting portion 22 is connected with the both ends of connecting portion 21 respectively, the other end of two grafting portion 22 is connected with two outer tip 23 respectively, two grafting portion 22 insert different rectangular channel 11, and the axis of grafting portion 22 is parallel with the axis of corresponding rectangular channel 11, connecting portion 21 and two outer tip 23 all are located outside the stator core 1, two outer tip 23 are set up along stator core's circumference slope and are the angle b of predetermineeing with stator core 1's axis. When the flat wire motor assembled with the flat wire motor stator assembly works, the rectangular groove 11 and the axis of the stator core 1 form a preset angle a, so that the amplitude of each subharmonic of the electromagnetic torque of the motor is reduced. The electromagnetic vibration and noise of the flat wire motor can be reduced by effectively reducing the influence of harmonic waves and cogging torque in the air gap flux density. Specifically, the two outer end portions 23 are disposed obliquely in the clockwise direction.

When the flat wire conductor 2 is assembled with the stator core 1, firstly, the two outer end parts 23 and the two inserting parts 22 are placed in one-to-one correspondence and are positioned on the same axis, the arrangement can facilitate the two inserting parts 22 to be inserted into different rectangular grooves 11, and when the two inserting parts 22 are inserted into different rectangular grooves 11, the two outer end parts 23 of the flat wire conductor 2 are obliquely arranged at the moment, as shown in fig. 1; then, the two outer ends 23 of the flat wire conductor 2 are made to coincide with the axis of the stator core 1 using a dedicated straightening tool, as shown in fig. 2; finally, the two outer ends 23 of the plurality of flat wire conductors 2 are obliquely disposed in the clockwise direction at a preset angle b to the axis of the stator core 1 using a dedicated bending tool, as shown in fig. 3.

Optionally, the preset angle a has a value ranging from 1 ° to 30 °. In the present embodiment, the angle of the preset angle a is preferably one of 1.5 °, 3.5 °, 7.5 °, 15 °, 22.5 ° and 30 °.

Optionally, the flat wire motor stator assembly further includes a plurality of insulating bushings 3, the plurality of insulating bushings 3 are inserted into the plurality of rectangular slots 11 in a one-to-one correspondence, and the inserting portions 22 in the rectangular slots 11 are inserted into the insulating bushings 3 in the corresponding rectangular slots 11. In this embodiment, the insulating paper is a flexible material, which can be inserted into the rectangular groove 11 according to the shape of the rectangular groove 11. The insulating sleeve 3 can realize oblique pole insulation. Preferably, the insulating sleeve 3 is folded from insulating paper into a rectangular tubular structure.

Optionally, the insulating sleeve 3 and the stator core 1 are consolidated by glue. In the present embodiment, the insulating sleeve 3 and the stator core 1 are fixed by glue, and thus the relative movement of the insulating sleeve 3 and the stator core 1 can be prevented.

Alternatively, the stator core 1 is laminated and formed by laminating a plurality of stator punching sheets. In this embodiment, a plurality of stator laminations are stacked in order along the thickness direction thereof. The arrangement can improve the magnetic permeability and reduce hysteresis loss.

Optionally, the stator punching sheet is formed by stamping. In the present embodiment, the stator punching sheet of the stator core 1 is press-formed by a press machine tool through a press die.

Optionally, a limit groove is concavely arranged on the outer peripheral surface of the stator punching sheet; when a plurality of stator punching sheets are stacked, a plurality of limiting grooves are surrounded to form a chute 12, and the angle of the chute 12 is equal to the preset angle a of the rectangular groove 11. In this embodiment, each stator lamination has the same structure. Therefore, by measuring the angle of the inclined groove 12, the angle between the rectangular groove 11 and the rotation axis of the stator core 1 can be determined.

As shown in fig. 7 and 8, the flat wire conductor 2 is alternatively integrally formed. In this embodiment, the flat wire conductor 2 is bent into a U-shaped structure by a bending tool, and the flat wire conductor 2 is acted on by an arc pressing tool, so that the axis of the plugging portion 22 is parallel to the axis of the corresponding rectangular slot 11.

The embodiment also provides a flat wire motor, which comprises the flat wire motor stator assembly in the scheme.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims

1. The flat wire motor stator subassembly, its characterized in that includes:

the stator comprises a stator core (1), wherein a plurality of rectangular grooves (11) are uniformly distributed on the inner peripheral surface of the stator core (1) around the axial direction of the stator core (1), and the rectangular grooves (11) are obliquely arranged along the clockwise direction and form a preset angle a with the axis of the stator core (1);

the flat wire conductor (2) comprises a connecting portion (21), two inserting portions (22) and two outer end portions (23), wherein one ends of the inserting portions (22) are respectively connected with two ends of the connecting portion (21), the other ends of the inserting portions (22) are respectively connected with the two outer end portions (23), the two inserting portions (22) are inserted into different rectangular grooves (11), the axes of the inserting portions (22) are parallel to the axes of the corresponding rectangular grooves (11), the connecting portions (21) and the two outer end portions (23) are located outside the stator core (1), and the two outer end portions (23) are arranged in an inclined mode along the circumferential direction of the stator core (1) and form a preset angle b with the axes of the stator core (1).

2. The flat wire motor stator assembly of claim 1 wherein the predetermined angle a is in the range of 1 ° -30 °.

3. The flat wire motor stator assembly according to claim 1, further comprising a plurality of insulating bushings (3), wherein a plurality of the insulating bushings (3) are inserted into a plurality of the rectangular slots (11) in a one-to-one correspondence, and the insertion portions (22) in the rectangular slots (11) are inserted into the insulating bushings (3) in the corresponding rectangular slots (11).

4. A flat wire motor stator assembly according to claim 3, characterized in that the insulating sleeve (3) is folded from insulating paper into a rectangular tubular structure.

5. A flat wire motor stator assembly according to claim 3, characterized in that the insulation sleeve (3) and the stator core (1) are consolidated by glue.

6. The flat wire motor stator assembly according to any one of claims 1-5, characterized in that the stator core (1) is laminated and formed by lamination of a plurality of stator laminations.

7. The flat wire motor stator assembly of claim 6, wherein the outer peripheral surface of the stator lamination is concavely provided with a limit groove;

when a plurality of stator punching sheets are stacked, a plurality of limiting grooves are surrounded to form a chute (12), and the angle of the chute (12) is equal to a preset angle a of the rectangular groove (11).

8. The flat wire motor stator assembly of claim 6 wherein the stator laminations are stamped and formed.

9. The flat wire motor stator assembly according to claim 1, characterized in that the flat wire conductor (2) is integrally formed.

10. A flat wire motor comprising a flat wire motor stator assembly according to any one of claims 1-9.