Flat wire motor busbar assembly

Abstract

The utility model discloses a flat wire motor bus bar assembly, comprising a bus bar body, the bus bar body comprises an annular first flat cable ring body and an annular second flat cable ring body, the first flat cable ring body is internally provided with four arc-shaped first installation cavities, the first installation cavities are arranged in the circumferential direction, and the second installation cavities are arranged in the circumferential direction. The first flat cable ring body is internally provided with three annular first mounting cavities, the end face of each first mounting cavity is provided with three first openings, the second flat cable ring body is internally provided with three annular second mounting cavities, the end face of each second mounting cavity is provided with four second openings, the first mounting cavities are internally provided with star point copper bars, and the second mounting cavities are internally provided with phase copper bars. According to the flat wire motor busbar assembly, the busbar body, the star point copper bars and the phase copper bars are integrally formed through injection molding, the overall structure is high in rigidity and resistant to vibration, the problems of welding spot cracking, deformation and the like cannot occur, reliability is good, and practicability is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to a flat wire motor, more exactly, a flat wire motor busbar assembly. BACKGROUND

[0002] With the popularization of electric vehicles in the market of commercial vehicles and engineering machinery, the driving scheme generally adopts permanent magnet synchronous motor, in order to solve the problem of low slot fill rate of copper round wire winding and the demand of high speed, light weight, large torque, high efficiency and cost reduction and efficiency improvement of the current host factory, the stator of the flat wire motor becomes the top priority of the technology research and development of major motor factories. In order to reduce the back electromotive force, more parallel branch numbers are often used, such as 4 parallel, which also causes the difficulty of effective copper bar connection of the input end and the output end (total 24 points), which not only guarantees the feasibility of the process, but also guarantees the safety of electrical insulation under high voltage platform and the quality stability under harsh working conditions. SUMMARY

[0003] Therefore, it is necessary to provide a flat wire motor busbar assembly aiming at the above technical problems.

[0004] In order to solve the above technical problems, the utility model adopts the following technical scheme:

[0005] A flat wire motor busbar assembly, characterized in that the flat wire motor busbar assembly comprises a busbar body, the busbar body comprises a first wire ring body and a second wire ring body, four arc-shaped first installation cavities are arranged in the first wire ring body, the first installation cavities are arranged in a circumferential direction, three first openings are arranged on the end face of the first installation cavity, three arc-shaped second installation cavities are arranged in the second wire ring body, four second openings are arranged on the end face of the second installation cavity, a star point copper bar is arranged in the first installation cavity, and a phase copper bar is arranged in the second installation cavity.

[0006] As a preferred embodiment of the utility model, the star point copper bar comprises an arc-shaped star point copper bar body, three star point copper bar bare copper welding heads are arranged on the edge of the star point copper bar body, the star point copper bar bare copper welding heads penetrate the first openings, the phase copper bar comprises an arc-shaped phase copper bar body, four phase copper bar bare copper welding heads are arranged on the edge of the phase copper bar body, and the phase copper bar bare copper welding heads penetrate the second openings.

[0007] As a preferred embodiment of the utility model, the busbar body, the star point copper bar and the phase copper bar are an injection molding integrated structure.

[0008] As a preferred embodiment of the utility model, the busbar body is made of PA66-GF30.

[0009] As a preferred embodiment of the utility model, the surface of the busbar body is provided with insulating paint.

[0010] As a preferred embodiment of the utility model, the star point copper bar and the phase copper bar are both stamping parts.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The flat wire motor busbar assembly can be directly placed on the crown end of the flat wire winding, connected through welding points, and additionally fixed by binding, is compact in structure, and is convenient to connect. Meanwhile, the flat wire motor busbar assembly also saves the processing step of coating the copper bar structure with Soma Long powder in the past, saves production cost, and avoids the problem of insulation failure caused by cracking in the later period. In addition, the flat wire motor busbar assembly can be vacuum impregnated with paint together with the entire stator, all bare copper welding points can be coated with an insulating paint layer, the insulation performance is better, and the reliability is higher. The busbar body, the star point copper bar and the phase copper bar are integrally injection molded in the flat wire motor busbar assembly, the overall structure is strong in rigidity, resistant to vibration, and does not have problems such as welding point cracking and deformation, is good in reliability, and is high in practicality. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the scheme in the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the flat wire motor busbar assembly of the utility model;

[0015] Figure 2 It is a schematic diagram of the three-dimensional structure of the busbar body of the flat wire motor busbar assembly in the utility model; Figure 1

[0016] Figure 3 It is a sectional view of the busbar body along the B-B line in the utility model; Figure 1

[0017] Figure 4 It is a sectional view of the busbar body along the B-B line in the utility model; Figure 3

[0018] Figure 5 It is a sectional view of the busbar body along the B-B line in the utility model; Figure 4 ​​​Detail enlarged schematic view of C area in the figure;

[0019] Figure 6 For Figure 1 Structure schematic view of phase copper bar and star point copper bar of flat wire motor busbar assembly in the figure;

[0020] Figure 7 For Figure 6 Detail enlarged schematic view of D area in the figure;

[0021] The figure is marked as follows: 10, busbar body; 11, first wire ring body; 111, first installation cavity; 112, first opening; 12, second wire ring body; 121, second installation cavity; 122, second opening; 20, phase copper bar; 21, phase copper bar body; 22, phase copper bar bare copper welding head; 30, star point copper bar; 31, star point copper bar body; 32, star point copper bar bare copper welding head; S, flat wire motor busbar assembly. DETAILED DESCRIPTION

[0022] In order to make the person skilled in the art better understand the technical scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application.

[0023] The flat wire motor busbar assembly S comprises a busbar body 10, the busbar body 10 comprises a first wire ring body 11 and a second wire ring body 12, the first wire ring body 11 is provided with four arc-shaped first installation cavities 111, the first installation cavities 111 are arranged in a circumferential direction, the end surface of the first installation cavity 111 is provided with three first openings 112, the second wire ring body 12 is provided with three arc-shaped second installation cavities 121, the end surface of the second installation cavity 121 is provided with four second openings 122, the first installation cavity 111 is provided with a star point copper bar 30, and the second installation cavity 121 is provided with a phase copper bar 20.

[0024] The phase copper bar 20 can be a U-phase copper bar, a V-phase copper bar or a W-phase copper bar.

[0025] It should be noted that the busbar body 10, the star point copper bar 30 and the phase copper bar 20 are integrally formed by injection molding.

[0026] The star point copper bar 30 comprises an arc-shaped star point copper bar body 31, the edge of the star point copper bar body 31 is provided with three star point copper bar bare copper welding heads 32, the star point copper bar bare copper welding head 32 penetrates the first opening 112, the phase copper bar 20 comprises a ring-shaped phase copper bar body 21, the edge of the phase copper bar body 21 is provided with four phase copper bar bare copper welding heads 22, and the phase copper bar bare copper welding head 22 penetrates the second opening 122.

[0027] In addition, the busbar body 10 is made of PA66-GF30. The star copper bar 30 and the phase copper bar 20 are both stamping parts.

[0028] In addition, the surface of the busbar body 10 is provided with insulating paint.

[0029] The installation mode of the flat wire motor busbar assembly will be described below.

[0030] The flat wire motor busbar assembly S can be directly placed on the crown end of the flat wire winding, connected through the welding points, and additionally fixed by binding. The structure is compact and convenient to connect. At the same time, the flat wire motor busbar assembly S also saves the processing step of coating the copper bar structure with Soma powder, saves the production cost, and avoids the problem of insulation failure caused by cracking in the later period. In addition, the flat wire motor busbar assembly S can be treated with vacuum impregnation of the entire stator, and all the bare copper welding points can be coated with a layer of insulating paint, so that the insulation performance is better and the reliability is higher.

[0031] In the flat wire motor busbar assembly S, the busbar body 10, the star copper bar 30 and the phase copper bar 20 are integrally injection molded, the overall structure is strong in rigidity, resistant to vibration, and will not have problems such as cracking and deformation of the welding points, so that the reliability is good and the practicality is strong.

[0032] Obviously, the above-described embodiments are only part of the embodiments of the present application, not all the embodiments, and the preferred embodiments of the present application are given in the drawings, but do not limit the patent scope of the present application.

Claims

1. A flat wire motor busbar assembly, characterized by, The flat wire motor busbar assembly (S) comprises a busbar body (10), the busbar body (10) comprises a ring-shaped first wire ring body (11) and a ring-shaped second wire ring body (12), four arc-shaped first installation cavities (111) are arranged in the first wire ring body (11), the first installation cavities (111) are arranged in a circumferential direction, three first openings (112) are arranged on the end surface of the first installation cavity (111), three ring-shaped second installation cavities (121) are arranged in the second wire ring body (12), four second openings (122) are arranged on the end surface of the second installation cavity (121), a star point copper bar (30) is arranged in the first installation cavity (111), and a phase copper bar (20) is arranged in the second installation cavity (121).

2. The flat wire motor busbar assembly of claim 1, wherein, The star point copper bar (30) comprises an arc-shaped star point copper bar body (31), three star point copper bar bare copper welding heads (32) are arranged on the edge of the star point copper bar body (31), the star point copper bar bare copper welding head (32) penetrates the first opening (112), the phase copper bar (20) comprises a ring-shaped phase copper bar body (21), four phase copper bar bare copper welding heads (22) are arranged on the edge of the phase copper bar body (21), and the phase copper bar bare copper welding head (22) penetrates the second opening (122).

3. The flat wire motor busbar assembly of claim 1, wherein, The busbar body (10), the star point copper bar (30) and the phase copper bar (20) are integrally formed by injection molding.

4. The flat wire motor busbar assembly of claim 1, wherein, The material of the busbar body (10) is PA66-GF30.

5. The flat wire motor busbar assembly of claim 1, wherein, The surface of the busbar body (10) is provided with insulating paint.

6. The flat wire motor busbar assembly of claim 1, wherein, The star point copper bar (30) and the phase copper bar (20) are stamping parts.

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