Busbar assembly and motor

Abstract

The utility model relates to a busbar assembly and a motor comprising the busbar assembly. The busbar assembly includes a first phase busbar, a second phase busbar, a third phase busbar, and a neutral point busbar. The first phase busbar comprises a first phase main body part and at least one first phase connecting part; the second phase busbar comprises a second phase main body part and at least one second phase connecting part; the third-phase busbar comprises a third-phase main body part and at least one third-phase connecting part; the neutral point busbar comprises a neutral main body part and a neutral connecting part; the first phase body portion, the second phase body portion, and the third phase body portion are disposed within a first level, the neutral body portion is disposed within a second level closer to the stator winding, and the first level is offset from the second level by a distance in an axial direction of the stator winding. According to the busbar assembly, the reliability of motor installation is ensured, the overall arrangement of the busbar assembly is compact, and the overall height of the busbar assembly is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a busbar component and a motor comprising the busbar component. Background Art

[0002] As the country vigorously promotes the development of new energy vehicles, the drive motors of new energy vehicles are also developing towards high power, miniaturization, oil cooling, and flat wires. High power density and miniaturization, which can reduce the power loss of new energy vehicles and increase the driving range, are the core technology development requirements. Therefore, the application of flat wire motors in electric vehicles is gradually increasing due to their advantages such as high power density and small size.

[0003] The main components of the motor include the stator assembly and the rotor assembly. Generally speaking, the stator assembly includes the stator core and the stator winding, and the rotor assembly includes permanent magnets or rotor windings. The stator winding is mounted on the stator core. When current passes through the stator winding, a magnetic field is generated in the stator core. This magnetic field interacts with the rotor assembly, causing the rotor to rotate, converting electrical energy into mechanical energy.

[0004] In order to connect each phase winding of a motor (such as a flat wire motor) to a busbar assembly, the ends of each phase winding are usually welded to the busbar assembly first. The busbar assembly is arranged at one end side of the stator winding, and the ends of each phase winding extend toward the busbar. In the known prior art design, in order to conveniently weld the ends of each phase winding to the conductive connection portion of the busbar assembly, the height of the winding ends is usually designed to be much higher than other windings. In this way, the height of the connection portion between the winding ends and the busbar is bound to increase, thereby increasing the overall length and weight of the motor, which not only affects the improvement of the power density of the motor, but also affects the layout of the motor on the vehicle.

[0005] Therefore, it is necessary to propose an improved busbar assembly, which can achieve reliable connection between each phase winding and the busbar assembly while ensuring the miniaturization and lightweight design of the motor. Utility Model Content

[0006] The present invention is proposed based on such background, and its purpose is to solve at least one of the above problems and / or other problems existing in the prior art.

[0007] To achieve the above-mentioned purpose, according to one aspect of the utility model, a busbar assembly for a motor is provided, the motor includes a stator winding, the stator winding includes a first phase winding, a second phase winding and a third phase winding, and the busbar assembly includes a first phase busbar, a second phase busbar, a third phase busbar and a neutral point busbar. The first phase busbar includes a first phase main body and at least one first phase connecting portion extending from the first phase main body, the first phase connecting portion is connected to the positive lead wire of the first phase winding; the second phase busbar includes a second phase main body and at least one second phase connecting portion extending from the second phase main body, the second phase connecting portion is connected to the positive lead wire of the second phase winding; the third phase busbar includes a third phase main body and at least one third phase connecting portion extending from the third phase main body, the third phase connecting portion is connected to the positive lead wire of the third phase winding. ; The neutral point bus includes a neutral main body and at least three neutral connection parts extending from the neutral main body, and the at least three neutral connection parts are respectively connected to the negative lead wires of the first phase winding, the second phase winding and the third phase winding of the stator winding; wherein the first phase main body, the second phase main body and the third phase main body are all arranged in the first level, and the neutral main body is arranged in the second level, wherein the second level is offset by a distance in the axial direction of the stator winding relative to the first level and is arranged to be closer to the stator winding than the first level.

[0008] According to an embodiment of the present invention, at least one of the first phase connection portion, the second phase connection portion, the third phase connection portion and the neutral connection portion extends within the same level as the corresponding main body portion.

[0009] According to one embodiment of the utility model, at least one of the first phase connection part, the second phase connection part, the third phase connection part and the neutral connection part is provided with a wire insertion sleeve at its free end to allow the positive lead wire or the negative lead wire of the corresponding winding to be inserted through the wire insertion sleeve and welded and fixed to the wire insertion sleeve.

[0010] According to an embodiment of the present invention, the first phase body portion, the second phase body portion and the third phase body portion are arranged to be spaced apart from each other in the radial direction of the stator winding and staggered at an angle in the circumferential direction of the stator winding.

[0011] According to one embodiment of the utility model, the first phase busbar includes two first phase connecting parts, each of which is provided with a wire sleeve at its free end for the positive lead wire of the first phase winding to pass through, wherein one of the first phase connecting parts extends radially inward from the first phase main body at one end of the first phase main body, and the other first phase connecting part extends radially outward from the first phase main body at the other end of the first phase main body.

[0012] According to one embodiment of the utility model, the third phase bus includes two third phase connecting parts, each of which is provided with a wire sleeve at its free end for the positive lead wire of the third phase winding to pass through, wherein one of the third phase connecting parts extends radially inward from the third phase main body at one end of the third phase main body, and the other third phase connecting part extends radially outward from the third phase main body at the other end of the third phase main body.

[0013] According to one embodiment of the present utility model, the second phase main body is radially located between the first phase main body and the third phase main body, and the second phase bus includes two second phase connecting parts, one of which is connected to the radially outer side of one end of the second phase main body and crosses the second phase main body and the first phase main body to bend toward the stator winding, and a first welding end welded to the positive lead wire of the second phase winding is formed on the radial inner side of the first phase main body, and the other second phase connecting part is connected to the radial inner side of the other end of the second phase main body and crosses the second phase main body and the third phase main body to be bent toward the stator winding, and a second welding end welded to the positive lead wire of the second phase winding is formed on the radial outer side of the third phase main body.

[0014] According to one embodiment of the utility model, the neutral point bus includes six neutral connection parts, each of which is provided with a wire sleeve at its free end for the negative lead wire of the first phase winding, the second phase winding or the third phase winding to pass through; the six neutral connection parts extend radially inward and radially outward from the neutral main body in an alternating manner.

[0015] According to one embodiment of the utility model, the busbar assembly also includes an injection molded part, which is integrally molded by insulating material to at least cover the periphery of the first phase main body, the second phase main body, the third phase main body and the neutral main body, so that the busbar assembly is formed as an integral part.

[0016] According to another aspect of the present invention, a motor is provided. The motor includes the busbar assembly as described above.

[0017] Compared with the prior art, the busbar assembly according to the utility model can achieve at least one of the following technical effects: by arranging the first phase main body, the second phase main body and the third phase main body in the same level and arranging the neutral main body in another level closer to the stator winding, the space occupied by the busbar assembly as a whole is effectively reduced; by making each phase connection part extend at the same level as the main body of the corresponding phase while avoiding interference with other components, the welding height between each phase connection part and the lead wire is reduced, and the overall height of the busbar assembly is further effectively reduced; and by adopting a wire sleeve to replace the welding end with a larger extension height in the prior art, the welding connection can be completed at approximately the same level as the main body of the corresponding phase, thereby greatly reducing the height of the winding connection end, thereby reducing the length of the entire motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The features and advantages of the present invention will be clearly understood through the detailed description provided below with reference to the accompanying drawings. It should be understood that the following drawings are merely schematic and not necessarily drawn to scale, and thus cannot be regarded as limiting the present invention, wherein:

[0019] Figure 1 A perspective view showing a busbar assembly according to an exemplary embodiment of the present invention installed on a stator winding of a motor.

[0020] Figure 2 Show Figure 1 The busbar assembly is shown in a perspective view after the injection-molded parts have been removed.

[0021] Figure 3 Show Figure 2 A top view of the busbar assembly is shown.

[0022] Figure 4 Show Figure 2 Front view of the busbar assembly shown.

[0023] Figure 5 Show Figure 1 Exploded view of the busbar assembly shown. DETAILED DESCRIPTION

[0024] Embodiments of the present invention are described below with reference to the accompanying drawings. In the following description, many specific details are set forth so that those skilled in the art can more fully understand and implement the present invention. However, it is obvious to those skilled in the art that the implementation of the present invention may not have some of these specific details. In addition, it should be understood that the present invention is not limited to the specific embodiments described. On the contrary, any combination of the features and elements described below may be considered to implement the present invention, regardless of whether they relate to different embodiments. Therefore, the following aspects, features, embodiments and advantages are for illustrative purposes only and should not be regarded as elements or limitations of the claims unless clearly stated in the claims.

[0025] In the following, terms such as "first", "second", etc. are used to describe the elements of the present application. These terms are only used to distinguish the various elements, and are not used to limit the nature, order or number of these elements. The terms "including" and "having" are used to express an open-ended inclusive meaning, and mean that there may be additional elements / components in addition to the listed elements / components.

[0026] The motor (such as a flat wire motor) generally includes a stator assembly and a rotor assembly, wherein the stator assembly may include a stator core and a stator winding 1 wound on the stator core. The stator winding 1 is, for example, a three-phase winding, which includes a first phase winding, a second phase winding and a third phase winding (for example, corresponding to the W phase, the V phase and the U phase winding, respectively), and each phase winding has a positive lead wire and a negative lead wire. Figure 1 Shown are a positive lead wire 11 of a first phase winding, a positive lead wire 12 of a second phase winding, a positive lead wire 13 of a third phase winding, and a negative lead wire 14 of the three phase windings.

[0027] Figures 2 to 4 FIG. 1 shows a busbar assembly according to an embodiment of the utility model. Figure 2 As shown, the busbar assembly according to this embodiment may include a first-phase busbar 2, a second-phase busbar 3, a third-phase busbar 4 and a neutral point busbar 5. It can be understood that when the first phase represents one of the W phase, the V phase and the U phase, the second phase may represent one of the other two except the phase, and the third phase may represent a phase different from the first phase and the second phase; and the neutral point busbar may correspond to the N-phase busbar.

[0028] The busbar assembly may include several conductive connection parts conductively connected (such as by welding) to the positive lead wires 11, 12, 13 and the negative lead wire 14 of the three-phase winding and lead terminals corresponding to the W, V, U and N phases respectively, which allow the motor to be connected to, for example, an inverter.

[0029] Advantageously, see Figure 1The positive lead wires 11, 12, 13 and the negative lead wire 14 of each phase are concentratedly arranged within a certain angle range (such as less than half a circle) in the circumferential direction of the stator winding 1, so that the positive and negative lead wires of each phase winding can be easily connected to the bus assembly, while also making the bus assembly smaller in size and simpler in structure.

[0030] refer to Figure 2 and Figure 3 According to an exemplary embodiment of the first phase busbar 2, the first phase busbar 2 may include a first phase main body 21 and at least one first phase connecting portion 22. The first phase main body 21 is disposed along the circumferential direction of the stator winding 1. Figure 4 The first level H shown extends at a certain angle, for example, it can extend through all positive lead wires 11 of the first phase winding. Each first phase connecting portion 22 extends from the first phase main body 21 in a radial direction toward the positive lead wire 11 of the corresponding first phase winding, so as to be connected to the positive lead wire 11.

[0031] In this embodiment, the first phase winding may be provided with two positive lead wires 11, which are respectively located radially inside and radially outside the first phase main body 21. The first phase main body 21 extends along the circumferential direction of the stator winding 1 at the shortest distance between the positions where the two positive lead wires 11 are located. Accordingly, two first phase connecting parts 22 corresponding to the positive lead wires 11 are provided, one of which is located at Figure 2 The right end of the first phase main body 21 shown in the figure extends radially inward from the first phase main body 21, and another first phase connecting portion 22 is located at Figure 2 The left end of the first phase main body 21 is shown to extend radially outward from the first phase main body 21 .

[0032] Advantageously, the first phase connecting portion 22 and the first phase main body portion 21 extend within the same level (ie, the first level H), which helps to reduce the height of the busbar assembly, thereby reducing the occupied space of the entire motor.

[0033] Continue to refer Figure 2 and Figure 3 According to an exemplary embodiment of the second phase busbar 3, the second phase busbar 3 may include a second phase main body 31 and at least one second phase connecting portion 32. The second phase main body 31 is spaced apart from the first phase main body 21 in the radial direction of the stator winding 1, and extends a certain angle in the first level H along the circumferential direction of the stator winding 1 like the first phase main body 21 and is staggered with the first phase main body 21 in the circumferential direction by an angle (such as Figure 2The left starting end of the second phase main body 31 is staggered at an angle in the circumferential direction with the left starting end of the first phase main body 21, for example, it can extend through all the positive lead wires 12 of the second phase winding. Each second phase connecting portion 32 extends from the second phase main body 31 in the radial direction toward the positive lead wire 12 of the corresponding second phase winding, so as to be connected to the positive lead wire 12.

[0034] In this embodiment, the second phase winding may be provided with two positive lead wires 12, which are respectively located radially inside and radially outside the second phase main body 31. The second phase main body 31 extends along the circumferential direction of the stator winding 1 at the shortest distance between the positions where the two positive lead wires 12 are located. Accordingly, two second phase connection parts 32 corresponding to the positive lead wires 12 are provided. Figure 3 As shown, in order to avoid the first phase main body 21 and connect to the positive lead 12 arranged on the radial inner side of the second phase main body 31, one of the second phase connecting parts 32 is connected to one end of the second phase main body 31 (i.e. Figure 3 The first welding end 33 welded to a positive lead wire 12 of the second phase winding is formed on the radially inner side of the first phase main body 21 and is formed on the radially outer side of the second phase main body 31 and the first phase main body 21. In addition, in order to avoid the third phase main body 41 (which will be described in detail below), another second phase connecting portion 32 is connected to the other end (i.e. Figure 3 The second welding end 34 is formed on the radially inner side of the third phase main body 41 (which will be described in detail below) and crosses the second phase main body 31 and the third phase main body 41, and is bent toward the stator winding 1. The second welding end 34 is welded to the other positive lead wire 12 of the second phase winding. Figure 1 As shown, the first welding end 33 has an overlapping portion with the corresponding positive lead wire 12, and is fixed by welding at the corresponding position of the overlapping portion. Similarly, the second welding end 34 has an overlapping portion with the corresponding positive lead wire 12, and is fixed by welding at the corresponding position of the overlapping portion. Through the above method, the interference problem between the second phase connecting portion 32 and the third phase main body 41 and the first phase main body 21 is effectively solved.

[0035] Continue to refer Figure 2 and Figure 3According to an exemplary embodiment of the third-phase busbar 4, the third-phase busbar 4 may include a third-phase main body 41 and at least one third-phase connecting portion 42. The third-phase main body 41 is spaced apart from the second-phase main body 31 in the radial direction of the stator winding 1 and is located on a side of the second-phase main body 31 opposite to the first-phase main body 21. In addition, the third-phase main body 41 is located at the same circumferential direction of the stator winding 1 as the first-phase main body 21 and the second-phase main body 31. Figure 4 The first level H shown extends inwardly at a certain angle and is staggered at an angle from the first phase main body 21 and the second phase main body 31 , thereby avoiding the first phase connecting portion 22 and the second phase connecting portion 32 extending radially outward.

[0036] In this embodiment, the third phase winding may be provided with two positive lead wires 13, which are respectively located radially inside and radially outside the third phase main body 41. The third phase main body 41 extends along the circumferential direction of the stator winding 1 at the shortest distance between the positions where the two positive lead wires 13 are located. Accordingly, two third phase connecting parts 42 corresponding to the positive lead wires 13 are provided, one of which is located at Figure 2 The third phase main body 41 is shown at the right end thereof and extends radially inward from the third phase main body 41. Another third phase connecting portion 42 is located at Figure 2 The left end of the third-phase main body 41 is shown to extend radially outward from the third-phase main body 41 .

[0037] Advantageously, the third phase connecting portion 42 and the third phase main portion 41 are at the same level (eg Figure 4 This helps to reduce the height of the busbar assembly, thereby reducing the overall space occupied by the motor.

[0038] Continue to refer Figure 2 and Figure 3 According to an exemplary embodiment of the neutral point busbar (i.e., the N-phase busbar) 4, the neutral point busbar 4 may include a neutral main body portion 51 and at least three neutral connection portions 52. The neutral main body portion 51 is located at a position circumferentially of the stator winding 1. Figure 4 The second level I shown extends at a certain angle, especially corresponding to the positions of the first phase main body 21, the second phase main body 31 and the third phase main body 41. When the neutral main body 51 extends, it passes through all the negative lead wires 14 of the first phase winding, the second phase winding and the third phase winding, so as to facilitate the one-to-one connection of the neutral connection part 52 extending from the neutral main body 51 with the corresponding negative lead wire 14.

[0039] In this embodiment, two positive lead wires 11, 12, 13 are provided for each of the first phase winding, the second phase winding, and the third phase winding, so there are six negative lead wires 14 of the three-phase winding, and they are alternately located radially inside and radially outside of the neutral main body 51. The neutral main body 51 extends along the circumference of the stator winding 1 at the shortest distance between the positions of the six negative lead wires 14. There are also six neutral connection parts 52 corresponding to the six negative lead wires 14, and the six neutral connection parts 52 are arranged at intervals along the circumference of the stator winding 1, and each of them is radially from the central main body 51 toward the corresponding negative lead wire 14.

[0040] In the prior art, the busbar assembly usually arranges multiple busbars on different levels, so that the entire busbar assembly occupies a large space. Compared with the prior art, in this embodiment, the first phase main body 21, the second phase main body 31 and the third phase main body 41 are arranged parallel to each other and in the same level, that is, Figure 4 In the first level H shown, the neutral main body 51 is arranged Figure 4 As shown, the second level I is located below the first level H, wherein the first level H is offset by a distance d relative to the second level I in the axial direction of the stator winding 1 , so that the space occupied by the entire busbar assembly is effectively reduced.

[0041] In addition, the first phase main body 21 and the third phase main body 41 are respectively arranged on the radial inner side and the radial outer side of the second phase main body 31, and the first phase main body 21, the second phase main body 31 and the third phase main body 41 are staggered at an angle in the circumferential direction, so that the first phase connecting portion 22 and the third phase connecting portion 42 can also extend inward or outward within the first level H, and the second phase connecting portion 32 can be bent so as to avoid the first phase main body 21 on the inner side and the third phase main body 41 on the outer side, thereby further reducing the space occupied by the bus assembly.

[0042] In the above embodiment, the first phase connection part 22, the third phase connection part 42 and the neutral connection part 52 are connected to the corresponding main body part via their respective fixed ends, and a plug-in sleeve 6 is provided at their respective free ends. The positive lead wire 11 of the first phase winding, the positive lead wire 13 or the negative lead wire 14 of the third phase winding are inserted into the corresponding plug-in sleeve 6 and fixedly connected to each other with the plug-in sleeve 6 by welding. It can be understood that in some other embodiments with different winding methods, the second phase connection part 32 can also be at the same level as the second phase main body 31 ( Figure 4The first level H) shown in FIG. 1 extends within the first level H), and a plug-in sleeve 6 can also be similarly provided at the free end of the second phase connection portion. It should be understood that by adopting the plug-in sleeve in the utility model to replace the welding end portion with a larger extension height in the prior art, the welding connection can be completed in substantially the same level as the main body portion of the corresponding phase, thereby greatly reducing the height of the winding connection end portion, thereby reducing the length dimension of the entire motor.

[0043] According to a further embodiment of the busbar assembly of this embodiment, Figure 1 and Figure 5 As shown, the busbar assembly also includes an injection molded part 7. The first phase busbar 2, the second phase busbar 3, the third phase busbar 4 and the neutral point busbar 5 are provided with a safety interval and the injection molded part 7 is formed by injection molding on the periphery of each main body part through an insulating material, so that the busbar assembly becomes an integral part. The insulating material fills the gaps between the busbars, plays the role of insulating and fixing the busbars, and can ensure the safety distance between the busbars of each phase, thereby improving the reliability of the power connection of the motor.

[0044] The utility model also provides a motor comprising the above busbar assembly.

[0045] For those skilled in the art, various modifications and variations may be made to the embodiments disclosed above without departing from the scope or spirit of the utility model. Other embodiments of the utility model will be apparent to those skilled in the art from the practice of the utility model disclosed in this specification. This specification and the examples disclosed therein should be considered to be illustrative only, and the true scope of the utility model is specified by the appended claims and their equivalents.

Claims

1. A busbar assembly for an electric motor, the electric motor comprising a stator winding (1), the stator winding comprising a first phase winding, a second phase winding and a third phase winding, characterized in that: The busbar assembly comprises: A first phase busbar (2), the first phase busbar (2) comprising a first phase main body (21) and at least one first phase connecting portion (22) extending from the first phase main body (21), the first phase connecting portion (22) being connected to a positive lead wire (11) of a first phase winding; A second phase busbar (3), the second phase busbar (3) comprising a second phase main body (31) and at least one second phase connecting portion (32) extending from the second phase main body (31), the second phase connecting portion (32) being connected to a positive lead wire (12) of a second phase winding; A third-phase busbar (4), the third-phase busbar (4) comprising a third-phase main body (41) and at least one third-phase connecting portion (42) extending from the third-phase main body (41), the third-phase connecting portion (42) being connected to a positive lead wire (13) of a third-phase winding; and A neutral point busbar (5), the neutral point busbar (5) comprising a neutral main body (51) and at least three neutral connection parts (52) extending from the neutral main body (51), the at least three neutral connection parts (52) being respectively connected to negative lead wires (14) of a first phase winding, a second phase winding and a third phase winding of the stator winding (1); The first phase main body (21), the second phase main body (31) and the third phase main body (41) are all arranged in a first layer, and the neutral main body (51) is arranged in a second layer. The second layer is offset by a distance (d) in the axial direction of the stator winding (1) relative to the first layer and is arranged to be closer to the stator winding (1) than the first layer.

2. The busbar assembly according to claim 1, characterized in that: At least one of the first phase connection portion (22), the second phase connection portion (32), the third phase connection portion (42), and the neutral connection portion (52) extends within the same level as the corresponding main body portion.

3. The busbar assembly according to claim 2, characterized in that: At least one of the first phase connection part (22), the second phase connection part (32), the third phase connection part (42) and the neutral connection part (52) is provided with a wire insertion sleeve (6) at its free end to allow the positive lead wire or the negative lead wire of the corresponding winding to be inserted through the wire insertion sleeve (6) and welded to the wire insertion sleeve (6).

4. The busbar assembly according to claim 3, characterized in that: The first phase main body (21), the second phase main body (31) and the third phase main body (41) are arranged to be spaced apart from each other in the radial direction of the stator winding (1) and staggered at an angle in the circumferential direction of the stator winding (1).

5. The busbar assembly according to any one of claims 1 to 4, characterized in that: The first phase busbar (2) comprises two first phase connecting parts (22), each of which is provided at its free end with a plug-in sleeve (6) for the positive lead wire (11) of the first phase winding to pass through, wherein one of the first phase connecting parts (22) extends radially inward from the first phase main body at one end of the first phase main body (21), and the other first phase connecting part (22) extends radially outward from the first phase main body at the other end of the first phase main body (21).

6. The busbar assembly according to claim 5, characterized in that: The third phase busbar (4) comprises two third phase connecting parts (42), each of which is provided at its free end with a plug-in sleeve (6) for the positive lead wire (13) of the third phase winding to pass through, wherein one of the third phase connecting parts (42) extends radially inward from the third phase main body (41) at one end of the third phase main body (41), and the other third phase connecting part (42) extends radially outward from the third phase main body (41) at the other end of the third phase main body (41).

7. The busbar assembly according to claim 6, characterized in that: The second phase main body (31) is located between the first phase main body (21) and the third phase main body (41) in the radial direction, and the second phase busbar (3) includes two second phase connecting parts (32); one of the second phase connecting parts (32) is connected to the radial outer side of one end of the second phase main body (31) and crosses the second phase main body (31) and the first phase main body (21) to bend toward the stator winding (1), and a first welding end (33) welded to the positive lead wire (12) of the corresponding second phase winding is formed on the radial inner side of the first phase main body; the other second phase connecting part (32) is connected to the radial inner side of the other end of the second phase main body (31) and crosses the second phase main body and the third phase main body (41) to bend toward the stator winding (1), and a second welding end (34) welded to the positive lead wire (12) of the corresponding second phase winding is formed on the radial outer side of the third phase main body.

8. The busbar assembly according to claim 7, characterized in that: The neutral point busbar (5) comprises six neutral connection parts (52), each of which is provided at its free end with a plug-in sleeve (6) for a negative lead wire (14) of a first phase winding, a second phase winding or a third phase winding to pass through; the six neutral connection parts extend radially inwardly and radially outwardly from a neutral main body in an alternating manner.

9. The busbar assembly according to any one of claims 1 to 4, characterized in that: The busbar assembly further comprises an injection molded part (7), wherein the injection molded part (7) is coated at least on the periphery of the first phase main body (21), the second phase main body (31), the third phase main body (41) and the neutral main body (51) by means of an insulating material in an integral injection molding manner, so that the busbar assembly is formed as an integral part.

10. A motor, characterized in that: The electric machine comprises a busbar assembly according to any one of claims 1 to 9.

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