Busbar and flat wire motor

Abstract

The utility model relates to a busbar and a flat wire motor. The busbar comprises star point copper bars, U / V / W copper bars with the same structure, three-phase outgoing lines and an insulation injection molding body. The main body part of the star-point copper bar is arc-shaped, and a plurality of star-point welding columns are arranged on the inner arc edge and the outer arc edge at intervals; the middle part of each three-phase copper bar is a main body wiring part, the two ends of each three-phase copper bar are three-phase welding columns, the three-phase welding columns are connected with the main body wiring parts through connecting parts, and the three-phase outgoing lines are connected with the main body wiring parts of the corresponding three-phase copper bars; the U / V / W phase copper bars are sequentially arranged on the upper portion of the star point copper bar at intervals, one three-phase welding column on each phase copper bar is located on the outer side of the inner arc edge of the main body portion of the star point copper bar, the other three-phase welding column on each phase copper bar is located on the outer side of the outer arc edge of the main body portion of the star point copper bar, and the three-phase welding columns on the outer arc edge side correspond to the star point welding columns on the inner arc edge. The three-phase welding columns on the inner arc side correspond to the star point welding columns on the outer arc side, and the three-phase copper bar and the star point copper bar are connected into a whole through the insulation injection molding body.

Description

Technical Field

[0001] The utility model relates to a busbar and a flat wire motor. Background Art

[0002] In flat wire motors, flat copper wire windings are difficult to bend and shape due to the large cross-sectional area of ​​a single conductor, which makes it difficult to arrange the three-phase output, star point connection and wiring. Especially for multi-parallel star-connected windings, it is necessary to shunt the U / V / W three-phases into a parallel circuit arrangement for multiple winding paths and complete the star point connection, which makes the three-phase output, star point connection and wiring arrangement more difficult to implement.

[0003] In the prior art, when connecting the windings of most flat wire motors, the star point and its three-phase outlet points are fixed with corresponding copper bars, which increases the processing cost of the copper bars and reduces the efficiency of the connection operation. Later, some designers formed an integrated busbar by injection molding the star point copper bar and the three-phase copper bar through an insulating injection molding body, which greatly improved the wiring assembly efficiency and reduced the probability of wiring errors. For example, the patents with announcement numbers CN211127358U, CN112186934B, and CN208986716U all adopt the above-mentioned integrated busbar design scheme, but the busbar structures disclosed in these prior arts have different U / V / W three-phase copper bar structures, which are relatively complex, and the design of the positions of the various connection points thereon is also relatively irregular, which brings certain difficulties to the molding and processing of the copper bar. Because the design of the star point copper bar and the three-phase copper bar structure is too complicated, when assembling and injection molding to form an integrated part, the positioning of the positions of each copper bar becomes very important, which also brings certain difficulties to the injection molding process. Utility Model Content

[0004] The utility model first discloses a busbar with a simple structure, low manufacturing cost and convenient connection with the winding outlet of a flat wire motor, which is specifically implemented by the following technical solutions:

[0005] A busbar, comprising:

[0006] The star-point copper busbar comprises an arc-shaped main body, and a plurality of star-point welding columns perpendicular to the top surface of the main body are arranged at intervals along the arc-shaped edges on opposite sides of the main body;

[0007] Three-phase copper bar; the three-phase copper bar is divided into a U-phase copper bar, a V-phase copper bar, and a W-phase copper bar with the same structure; the three-phase copper bar includes a main body connection part and three-phase welding columns arranged at both ends of the main body connection part, and the three-phase welding columns are connected to the main body connection part through a connecting part;

[0008] Three-phase lead wires; the three-phase lead wires are divided into U-phase lead wires, V-phase lead wires, and W-phase lead wires, the U-phase lead wire is connected to the main wiring portion of the U-phase copper busbar, the V-phase lead wire is connected to the main wiring portion of the V-phase copper busbar, and the W-phase lead wire is connected to the main wiring portion of the W-phase copper busbar;

[0009] Insulation injection molding;

[0010] The U-phase copper bar, the V-phase copper bar and the W-phase copper bar are arranged in sequence on the upper part of the star-point copper bar. One of the three-phase welding columns on each phase copper bar is located outside the inner arc edge of the main body of the star-point copper bar, and the other three-phase welding column is located outside the outer arc edge of the main body of the star-point copper bar. Each three-phase welding column located on the outer arc edge corresponds to the position of the star-point welding column on the inner arc edge of the star-point copper bar, and each three-phase welding column located on the inner arc edge corresponds to the position of the star-point welding column on the outer arc edge of the star-point copper bar. The insulating injection molding body covers the main body of the star-point copper bar and fills the gap between the three-phase copper bar and the star-point copper bar, so that the three-phase copper bar and the star-point copper bar are connected as a whole.

[0011] Furthermore, the star point welding column and the three-phase welding column are both rectangular columns, and the star point welding column and the three-phase welding column facing each other are parallel to each other and are located on the same radius line of the star point copper busbar main body.

[0012] Further, the outer arc edge and the inner arc edge of the main body of the star-point copper bar are respectively provided with three star-point welding columns, and along the clockwise direction, from the starting point of the outer arc edge contour line to the end point of the inner arc edge contour line, they are the first star-point welding column to the sixth welding column, the first star-point welding column is located at the starting point of the outer arc edge end, the fourth star-point welding column is located at the starting point of the inner arc edge end, and the second star-point welding column, the third star-point welding column, the fifth star-point welding column, and the sixth star-point welding column are arranged alternately with each other;

[0013] The three-phase welding column opposite to the first star point welding column is the U-phase first welding column, the three-phase welding column opposite to the sixth star point welding column is the U-phase second welding column, the three-phase welding column opposite to the second star point welding column is the V-phase first welding column, the three-phase welding column opposite to the fifth star point welding column is the V-phase second welding column, the three-phase welding column opposite to the third star point welding column is the W-phase first welding column, and the three-phase welding column opposite to the fourth star point welding column is the W-phase second welding column.

[0014] Further, taking the radius line of the arc segment midpoint of the main body of the star-point copper bar as the reference line, the angle α between the radius line of the first star-point welding column and the reference line is 52.5°±5°, the angle β between the radius line of the second star-point welding column and the reference line is 22.5°±5°, and the angle γ between the radius line of the sixth star-point welding column and the reference line is 7.5°±5°;

[0015] The angle α between the radius line of the fourth star point welding column and the baseline is 52.5°±5°, the angle β between the radius line of the fifth star point welding column and the baseline is 22.5°±5°, and the angle γ between the radius line of the third star point welding column and the baseline is 7.5°±5°.

[0016] Further, the angle α between the radius line of the first star point welding column and the reference line is 52.5°, the angle β between the radius line of the second star point welding column and the reference line is 22.5°, and the angle γ between the radius line of the sixth star point welding column and the reference line is 7.5°;

[0017] The angle α between the radius line of the fourth star point welding column and the reference line is 52.5°, the angle β between the radius line of the fifth star point welding column and the reference line is 22.5°, and the angle γ between the radius line of the third star point welding column and the reference line is 7.5°.

[0018] Furthermore, the connection part of the three-phase copper busbar connected to the three-phase welding column on the outer arc side of the star-point copper busbar main body is the first connection part, and the connection part connecting the three-phase welding column on the inner arc side of the star-point copper busbar main body is the second connection part. The first connection part is a straight bar type, and the second connection part has an arc-shaped bending section.

[0019] Furthermore, the insulating injection-molded body comprises an arc-shaped body, three protrusions are formed on the top surface of the body, and grooves are formed between adjacent protrusions.

[0020] Furthermore, the side surface of the raised portion includes a curved surface and a cut surface.

[0021] Furthermore, a groove is provided on the bottom surface of the body.

[0022] The utility model also discloses a flat wire motor using the above busbar, comprising a busbar, an outer ring star point outgoing conductor, an inner ring star point outgoing conductor, an outer ring three-phase outgoing conductor, and an inner ring three-phase outgoing conductor;

[0023] The star point welding column located on the outer arc side is welded to the outer ring star point outgoing conductor, the three-phase welding column located on the outer arc side is welded to the outer ring three-phase outgoing conductor, the star point welding column located on the inner arc side is welded to the inner ring star point outgoing conductor, and the three-phase welding column located on the inner arc side is welded to the inner ring three-phase outgoing conductor.

[0024] The utility model adopts an integrated busbar, which is easy to install and reduces wiring errors; the body of the busbar is designed in an arc shape, which is convenient for radial positioning when connecting to the stator winding; the star point copper busbar and the three-phase copper busbar inside the busbar are simple in structure design, and the positions of the various connection points are reasonably arranged, which not only facilitates the processing and forming of the copper busbar, but also facilitates the positioning of each copper busbar when forming an integrated part through the injection molding process; the utility model also designs the U / V / W phase copper busbars to have the same structure, which not only facilitates the processing of the three-phase copper busbar, but also reduces the placement errors caused by structural differences when arranging the three-phase copper busbar, and is more conducive to reducing manufacturing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the assembly structure of the busbar shown in the embodiment;

[0026] Figure 2 for Figure 1 Schematic diagram of the structure from an upward perspective;

[0027] Figure 3 This is the exploded view of the busbar;

[0028] Figure 4 This is a schematic diagram of the internal structure of the busbar after removing the insulating injection molding body;

[0029] Figure 5 It is the structural schematic diagram of the W phase copper busbar;

[0030] Figure 6 It is a schematic diagram of the structure of the insulating injection molding body;

[0031] Figure 7 It is a top view of the position arrangement of the star point copper busbar and the three-phase copper busbar;

[0032] Figure 8 It is a schematic diagram of the connection structure between the busbar and the stator winding;

[0033] Fig. 9 for Figure 8 A partial enlarged view of .

[0034] Description of Figure Numbers:

[0035] 100, star point copper bar; 101, main body; 7, first star point welding column; 8, second star point welding column; 9, third star point welding column; 10, fourth star point welding column; 11, fifth star point welding column; 12, sixth star point welding column;

[0036] 200A, U-phase copper busbar; 200B, V-phase copper busbar; 200C, W-phase copper busbar; 201, main body connection part; 202, first connection part; 203, second connection part;

[0037] 1. U-phase first welding column; 2. U-phase second welding column; 3. V-phase first welding column; 4. V-phase second welding column; 5. W-phase first welding column; 6. W-phase second welding column;

[0038] 300, three-phase lead wire;

[0039] 400, insulating injection molding; 401, main body; 402, first protrusion; 403, second protrusion; 404, third protrusion; 405, groove; 406, recess;

[0040] 500, outer ring star point outlet conductor;

[0041] 600, inner circle star point outlet conductor;

[0042] 700, outer ring three-phase outgoing conductor;

[0043] 800, Inner ring three-phase outgoing conductor. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0045] This embodiment discloses an integrated busbar and a flat wire motor using the busbar for stator winding connection, wherein the structure of the busbar is as follows: Figures 1 to 7 As shown, it mainly includes a star point copper bar 100, a three-phase copper bar, a three-phase lead wire 300 and an insulating injection molding body 400. Among them, the three-phase copper bar is divided into a U-phase copper bar 200A, a V-phase copper bar 200B, and a W-phase copper bar 200C with the same structure, and the three-phase lead wire is divided into a U-phase lead wire, a V-phase lead wire, and a W-phase lead wire. The U-phase copper bar 200A, the V-phase copper bar 200B, and the W-phase copper bar 200C are sequentially arranged at intervals on the upper part of the star point copper bar 100, spaced from each other and not in contact with the star point copper bar 100, and the insulating material is filled into the gap between the three-phase copper bar and the star point copper bar 100 by injection molding, and the main body 101 of the star point copper bar 100 is covered, so that the three-phase copper bar and the star point copper bar 100 are connected as a whole.

[0046] The structure of the star point copper bus 100 is as follows Figure 3 As shown, the star point copper busbar 100 includes an arc-shaped main body 101, and a plurality of star point welding columns perpendicular to the top surface of the main body 101 are arranged at intervals along the arc edges on opposite sides of the main body 101. The star point welding columns in this embodiment are rectangular columns, three of which are arranged on the outer arc edge and three on the inner arc edge, for a total of six star point welding columns. Figure 3The direction shown is for reference, from the starting point of the left end contour line of the outer arc edge of the main body 101 in the clockwise direction to the end point of the inner arc edge contour line, there are the first star point welding column 7, the second star point welding column 8, the third star point welding column 9, the fourth star point welding column 10, the fifth star point welding column 11, and the sixth star point welding column 12. Among them, the first star point welding column 7 is located at the starting point of the outer arc edge end, the fourth star point welding column 10 is located at the starting point of the inner arc edge end, and the second star point welding column 8, the third star point welding column 9, the fifth star point welding column 11, and the sixth star point welding column 12 are arranged alternately.

[0047] Since the U-phase copper bar 200A, the V-phase copper bar 200B, and the W-phase copper bar 200C in this embodiment have the same structure, for the sake of simplicity, Figure 5 The structure of the three-phase copper busbar is described by taking the W-phase copper busbar 200C as an example. The three-phase copper busbar includes a main body connection part 201 located in the middle and three-phase welding columns arranged at both ends of the main body connection part 201. The three-phase welding columns are connected to the main body connection part 201 through a connecting part. In this embodiment, in order to facilitate welding during wiring, the three-phase welding columns are also designed as rectangular columns. Figure 5 The direction shown is for reference, the second connection part 203 is connected to the three-phase welding column on the left, and the first connection part 202 is connected to the three-phase welding column on the right. Since the three-phase connection column on the right is used to connect with the outer three-phase outgoing conductor 700 when arranging the three-phase copper busbar, the outer circle space is large, and there is a large bending adjustment space when connecting, so the first connection part 202 is designed as a straight bar in this embodiment; while the three-phase connection column on the left is used to connect with the inner three-phase outgoing conductor 800, and the inner circle space is small. In order to make the three-phase welding column connected to the inner three-phase outgoing conductor 800 closer to the inner three-phase outgoing conductor 800, the second connection part 203 is designed to have an arc-shaped bending section in this embodiment.

[0048] When the above three-phase copper bar and the star point copper bar 100 are assembled, Figure 4As shown, the U-phase copper bar 200A, the V-phase copper bar 200B, and the W-phase copper bar 200C are sequentially arranged above the main body 101 of the star-point copper bar 100, so that one of the three-phase welding columns on each phase copper bar is located outside the inner arc edge of the main body 101 of the star-point copper bar 100, and the other three-phase welding column is located outside the outer arc edge of the main body 101 of the star-point copper bar 100. Each three-phase welding column located on the outer arc edge corresponds to the position of the star-point welding column on the inner arc edge of the star-point copper bar 100, and each three-phase welding column located on the inner arc edge corresponds to the position of the star-point welding column on the outer arc edge of the star-point copper bar 100. The star-point welding columns and the three-phase welding columns that are opposite to each other are parallel to each other and are located on the same radius connection line of the main body 101 of the star-point copper bar 100. The U-phase lead wire is connected to the main connecting portion 201 of the U-phase copper bar 200A, the V-phase lead wire is connected to the main connecting portion 201 of the V-phase copper bar 200B, and the W-phase lead wire is connected to the main connecting portion 201 of the W-phase copper bar 200C.

[0049] Further, to facilitate subsequent description, the three-phase welding column opposite to the first star point welding column 7 is the U-phase first welding column 1, the three-phase welding column opposite to the sixth star point welding column 12 is the U-phase second welding column 2, the three-phase welding column opposite to the second star point welding column 8 is the V-phase first welding column 3, the three-phase welding column opposite to the fifth star point welding column 11 is the V-phase second welding column 4, the three-phase welding column opposite to the third star point welding column 9 is the W-phase first welding column 5, and the three-phase welding column opposite to the fourth star point welding column 10 is the W-phase second welding column 6.

[0050] When designing the positions of the star point welding columns in the busbar, they should correspond to the design of the flat wire star point outlet positions on the stator core. In this embodiment, a specific flat wire star point outlet design scheme is taken as an example. Figure 7As shown, taking the radius line of the arc segment midpoint of the main body 101 of the star-point copper busbar 100 as the reference line, the angle α between the radius line of the first star-point welding column 7 and the reference line is 52.5°±5°, the angle β between the radius line of the second star-point welding column 8 and the reference line is 22.5°±5°, and the angle γ between the radius line of the sixth star-point welding column 12 and the reference line is 7.5°±5°; similarly, the angle α between the radius line of the fourth star-point welding column 10 and the reference line is 52.5°±5°, the angle β between the radius line of the fifth star-point welding column 11 and the reference line is 22.5°±5°, and the angle γ between the radius line of the third star-point welding column 9 and the reference line is 7.5°±5°. As long as the above-mentioned angles are controlled within the range of ±5°, the alignment welding of the star-point welding column on the bus and the flat wire outlet end can be satisfied. However, if the deviation is too large, the alignment will be difficult. The smaller the deviation range, the more accurate the position docking. Therefore, as the preferred value, it is best to design according to the following angles: the angle α between the radius line of the first star-point welding column 7 and the baseline is 52.5°, the angle β between the radius line of the second star-point welding column 8 and the baseline is 22.5°, and the angle γ between the radius line of the sixth star-point welding column 12 and the baseline is 7.5°; the angle α between the radius line of the fourth star-point welding column 10 and the baseline is 52.5°, the angle β between the radius line of the fifth star-point welding column 11 and the baseline is 22.5°, and the angle γ between the radius line of the third star-point welding column 9 and the baseline is 7.5°.

[0051] The structure of the insulating injection molded body 400 in this embodiment is as follows Figure 6 As shown, it mainly includes an arc-shaped body 401, and a first protrusion 402, a second protrusion 403, and a third protrusion 404 are formed on the top surface of the body 401 in sequence, and grooves 405 are formed between adjacent protrusions. The side surface of each protrusion includes an arc surface connected to the side surface of the arc-shaped body 401 and multiple cut surfaces. The height of the protrusion is mainly considered to be able to cover the entire body below the main wiring part 201 of the three-phase copper busbar. The other areas of the insulating injection molding body 400 only need to cover the main body 101 of the star-point copper busbar 100. In order to save materials and reduce the weight of the busbar as much as possible, the insulating material in the area outside the protrusion is cut off as much as possible in this embodiment. In addition, to facilitate the axial installation and positioning of the busbar, such as Figure 2 As shown, in this embodiment, two grooves 406 are further provided on the bottom surface of the body 401 , and axial positioning can be performed through the grooves 406 using a positioning fixture.

[0052] When the busbar given above is connected to the stator winding of the flat wire motor, Figure 8 and Fig. 9As shown, the busbar is placed above the output terminal of the stator winding of the flat wire motor, so that the insulating injection molding body 400 of the busbar is embedded between the outermost ring output conductor and the innermost ring output conductor. The outermost ring output conductor is divided into an outer ring star point output conductor 500 and an outer ring three-phase output conductor 700, and the outer ring three-phase output conductor 700 is further divided into an outer ring U-phase output conductor, an outer ring V-phase output conductor, and an outer ring W-phase output conductor. The innermost ring output conductor is divided into an inner ring star point output conductor 600 and an inner ring three-phase output conductor 800, and the inner ring three-phase output conductor 800 is further divided into an inner ring U-phase output conductor, an inner ring V-phase output conductor, and an inner ring W-phase output conductor. Make the first star point welding column 7, the second star point welding column 8, and the third star point welding column 9 respectively fit and weld with the corresponding outer circle star point outgoing conductor 500; make the fourth star point welding column 10, the fifth star point welding column 11, and the sixth star point welding column 12 respectively fit and weld with the corresponding inner circle star point outgoing conductor 600; make the U-phase first welding column 1 fit and weld with the inner circle U-phase outgoing conductor; make the U-phase second welding column 2 fit and weld with the outer circle U-phase outgoing conductor; make the V-phase first welding column 3 fit and weld with the inner circle V-phase outgoing conductor; make the V-phase second welding column 4 fit and weld with the outer circle V-phase outgoing conductor; make the W-phase first welding column 5 fit and weld with the inner circle W-phase outgoing conductor; make the W-phase second welding column 6 fit and weld with the outer circle W-phase outgoing conductor.

[0053] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A busbar, characterized in that: include: The star-point copper busbar comprises an arc-shaped main body, and a plurality of star-point welding columns perpendicular to the top surface of the main body are arranged at intervals along the arc-shaped edges on opposite sides of the main body; Three-phase copper bar; the three-phase copper bar is divided into a U-phase copper bar, a V-phase copper bar, and a W-phase copper bar with the same structure; the three-phase copper bar includes a main body connection part and three-phase welding columns arranged at both ends of the main body connection part, and the three-phase welding columns are connected to the main body connection part through a connecting part; Three-phase lead wires; the three-phase lead wires are divided into U-phase lead wires, V-phase lead wires, and W-phase lead wires, the U-phase lead wire is connected to the main wiring portion of the U-phase copper busbar, the V-phase lead wire is connected to the main wiring portion of the V-phase copper busbar, and the W-phase lead wire is connected to the main wiring portion of the W-phase copper busbar; Insulation injection molding; The U-phase copper bar, the V-phase copper bar and the W-phase copper bar are arranged in sequence on the upper part of the star-point copper bar. One of the three-phase welding columns on each phase copper bar is located outside the inner arc edge of the main body of the star-point copper bar, and the other three-phase welding column is located outside the outer arc edge of the main body of the star-point copper bar. Each three-phase welding column located on the outer arc edge corresponds to the position of the star-point welding column on the inner arc edge of the star-point copper bar, and each three-phase welding column located on the inner arc edge corresponds to the position of the star-point welding column on the outer arc edge of the star-point copper bar. The insulating injection molding body covers the main body of the star-point copper bar and fills the gap between the three-phase copper bar and the star-point copper bar, so that the three-phase copper bar and the star-point copper bar are connected as a whole.

2. A busbar according to claim 1, characterized in that: The star point welding column and the three-phase welding column are both rectangular columns. The star point welding column and the three-phase welding column facing each other are parallel to each other and are located on the same radius connecting line of the star point copper bar main body.

3. A busbar according to claim 2, characterized in that: The outer arc edge and the inner arc edge of the main body of the star-point copper bar are respectively provided with three star-point welding columns, and along the clockwise direction, from the starting point of the outer arc edge contour line to the end point of the inner arc edge contour line, they are the first star-point welding column to the sixth welding column, the first star-point welding column is located at the starting point of the outer arc edge end, the fourth star-point welding column is located at the starting point of the inner arc edge end, and the second star-point welding column, the third star-point welding column, the fifth star-point welding column, and the sixth star-point welding column are arranged alternately with each other; The three-phase welding column opposite to the first star point welding column is the U-phase first welding column, the three-phase welding column opposite to the sixth star point welding column is the U-phase second welding column, the three-phase welding column opposite to the second star point welding column is the V-phase first welding column, the three-phase welding column opposite to the fifth star point welding column is the V-phase second welding column, the three-phase welding column opposite to the third star point welding column is the W-phase first welding column, and the three-phase welding column opposite to the fourth star point welding column is the W-phase second welding column.

4. A busbar according to claim 3, characterized in that: Taking the radius line of the arc segment midpoint of the main body of the star point copper bar as the reference line, the angle α between the radius line of the first star point welding column and the reference line is 52.5°±5°, the angle β between the radius line of the second star point welding column and the reference line is 22.5°±5°, and the angle γ between the radius line of the sixth star point welding column and the reference line is 7.5°±5°; The angle α between the radius line of the fourth star point welding column and the baseline is 52.5°±5°, the angle β between the radius line of the fifth star point welding column and the baseline is 22.5°±5°, and the angle γ between the radius line of the third star point welding column and the baseline is 7.5°±5°.

5. A busbar according to claim 4, characterized in that: The angle α between the radius line of the first star point welding column and the reference line is 52.5°, the angle β between the radius line of the second star point welding column and the reference line is 22.5°, and the angle γ between the radius line of the sixth star point welding column and the reference line is 7.5°; The angle α between the radius line of the fourth star point welding column and the reference line is 52.5°, the angle β between the radius line of the fifth star point welding column and the reference line is 22.5°, and the angle γ between the radius line of the third star point welding column and the reference line is 7.5°.

6. A busbar according to claim 1, characterized in that: The connection part of the three-phase copper busbar connected to the three-phase welding column on the outer arc side of the star-point copper busbar main body is the first connection part, and the connection part connecting the three-phase welding column on the inner arc side of the star-point copper busbar main body is the second connection part. The first connection part is a straight bar type, and the second connection part has an arc-shaped bending section.

7. The busbar according to claim 1, characterized in that: The insulating injection molded body comprises an arc-shaped body, three protrusions are formed on the top surface of the body, and grooves are formed between adjacent protrusions.

8. A busbar according to claim 7, characterized in that: The side surface of the raised portion includes a curved surface and a cut surface.

9. A busbar according to claim 7, characterized in that: A groove is arranged on the bottom surface of the body.

10. A flat wire motor, characterized in that: Comprising the busbar as claimed in any one of claims 1 to 9, an outer ring star point outgoing conductor, an inner ring star point outgoing conductor, an outer ring three-phase outgoing conductor, and an inner ring three-phase outgoing conductor; The star point welding column located on the outer arc side is welded to the outer ring star point outgoing conductor, the three-phase welding column located on the outer arc side is welded to the outer ring three-phase outgoing conductor, the star point welding column located on the inner arc side is welded to the inner ring star point outgoing conductor, and the three-phase welding column located on the inner arc side is welded to the inner ring three-phase outgoing conductor.

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