A symmetrical busbar assembly

Abstract

The application relates to a symmetrical busbar assembly, which comprises a fixing structure, a plurality of copper bar pieces, and a plurality of copper bar pieces are connected with the fixing structure and at least partially extend out of the fixing structure, and the parts of the plurality of copper bar pieces extending out of the fixing structure are symmetrically arranged along the symmetry axis. The fixing structure is symmetrically arranged on the left and right sides, and the parts of the plurality of copper bar pieces extending out of the fixing structure are symmetrically arranged along the symmetry axis of the fixing structure, so that the busbar assembly as a whole forms a symmetrical structure. When the busbar assembly is applied to double motors, it can be used in front and back mirror images, so as to simultaneously meet the use requirements of the double motors without increasing additional design cost and mold opening cost, thereby reducing the preparation cost.

Description

Technical Field

[0001] This application relates to the field of motor technology, and in particular to a symmetrical busbar assembly. Background Technology

[0002] New energy vehicles may include electric drive systems, and existing electric drive systems mostly adopt a dual-motor design to meet the needs of various driving modes in new energy vehicles. For any one of these motors, it is typically a three-phase motor, and its winding structure includes a busbar assembly to collect the three-phase current. The busbar assembly usually includes several copper busbars and a fixed structure that injection molds these copper busbars into one piece; the fixed structure typically extends circumferentially along the motor. To facilitate wiring of the busbar assembly, the copper busbar body and solder terminals of the copper busbars usually extend at least partially beyond the fixed structure. However, in existing technologies, busbar assemblies are typically asymmetrically arranged. In radially symmetrical dual-motor systems, two busbar assemblies are usually required, and correspondingly, two molds for these busbar assemblies need to be designed during manufacturing, which increases the manufacturing cost of the busbar assemblies. Utility Model Content

[0003] Based on this, this application provides a symmetrical bus assembly to improve the problem that the existing bus assemblies are difficult to simultaneously accommodate two motors, which leads to increased manufacturing costs.

[0004] This application provides a symmetrical bus assembly, the symmetrical bus assembly comprising:

[0005] A fixed structure, symmetrically arranged on the left and right, and having a symmetrical axis;

[0006] A plurality of copper busbars are provided, each of which is connected to the fixed structure and extends at least partially beyond the fixed structure. The portions of the copper busbars extending beyond the fixed structure are symmetrically arranged along the axis of symmetry.

[0007] In one embodiment, the copper busbar includes a copper busbar body and solder terminals, wherein the copper busbar body is connected to the solder terminals.

[0008] In one embodiment, the type of copper busbar includes phase copper busbars, and three phase copper busbars are provided. The copper busbar bodies of the three phase copper busbars extend at least partially beyond the fixed structure. The portion of the copper busbar body of one phase copper busbar extending beyond the fixed structure is arranged on the axis of symmetry and is symmetrically arranged along the axis of symmetry. The portions of the copper busbar bodies of the other two phase copper busbars extending beyond the fixed structure are symmetrically arranged along the axis of symmetry.

[0009] In one embodiment, the type of copper busbar also includes star-shaped copper busbars, wherein one or more star-shaped copper busbars are provided, and the copper busbar bodies of the star-shaped copper busbars are all disposed within the fixed structure.

[0010] In one embodiment, each of the phase copper busbars has n solder terminals, and the total number of solder terminals of the star copper busbars is 3n, where n is a positive integer. All 6n solder terminals extend at least partially beyond the fixed structure, and the portions of the 6n solder terminals extending beyond the fixed structure are symmetrically arranged along the axis of symmetry.

[0011] In one embodiment, the portions of the solder terminals of the plurality of copper busbars that extend beyond the fixing structure all extend in the same direction.

[0012] In one embodiment, the portions of the solder terminals of the plurality of copper busbars extending beyond the fixing structure are flush with their extension direction.

[0013] In one embodiment, the projection of the fixing structure along the extension direction of the portion of the solder terminals of the plurality of copper busbars extending beyond the fixing structure is arc-shaped.

[0014] In one embodiment, the portions of the solder terminals of a plurality of copper busbars extending beyond the fixing structure are all located close to the inner or outer periphery of the fixing structure.

[0015] In one embodiment, the fixing structure includes a fixing base and a thickening portion, the thickening portion being connected to the fixing base, and the height of the thickening portion being greater than the height of the fixing base. The fixing base and the thickening portion are symmetrically arranged along the axis of symmetry, and the copper busbar bodies of a plurality of copper busbar components extend beyond the fixing structure from the thickening portion.

[0016] This application achieves a symmetrical busbar assembly by symmetrically arranging the fixed structure on both sides and symmetrically arranging the portions of several copper busbars extending beyond the fixed structure along the axis of symmetry of the fixed structure. When applied to dual motors, it can be used both in front and behind the mirror image to simultaneously meet the usage requirements of dual motors without increasing additional design and mold costs, thereby reducing its manufacturing cost. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a symmetrical busbar assembly provided in an embodiment of this application;

[0018] Figure 2 An exploded view of a symmetrical busbar assembly provided in an embodiment of this application.

[0019] Reference numerals: 100, copper busbar; 100a, phase copper busbar; 100b, star-shaped copper busbar; 110, copper busbar body; 120, solder joint terminal; 200, fixing structure; 210, fixing base; 220, thickened part. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0021] It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of this utility model.

[0022] The structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this utility model can be implemented. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0023] The orientations or positional relationships indicated by terms such as "upper," "lower," "left," "right," "middle," "longitudinal," "transverse," "horizontal," "inner," "outer," "radial," and "circumferential" used in this specification are based on the orientations or positional relationships shown in the accompanying drawings and are only for the purpose of simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] This application provides a symmetrical bus assembly, such as... Figures 1 to 2 As shown, the symmetrical bus assembly includes:

[0025] The fixed structure 200 is symmetrically arranged on the left and right sides and has a symmetrical axis A;

[0026] There are several copper busbars 100, each of which is connected to the fixed structure 200 and extends at least partly beyond the fixed structure 200. The portions of the copper busbars 100 extending beyond the fixed structure 200 are symmetrically arranged along the axis of symmetry A.

[0027] like Figure 1As shown in this embodiment, the busbar assembly can also be called a "busbar assembly." Its main function is to integrate the copper busbar components 100 in the motor stator structure to improve assembly efficiency and welding strength. The copper busbar component 100 of the busbar assembly can be a phase copper busbar 100a. For example, in a three-phase motor, there can be three phase copper busbars 100a, each corresponding to one of the three phases of the motor. The phase copper busbar 100a can be used to connect the input positions of several winding branches of the same phase in parallel. The copper busbar component 100 of the busbar assembly can also be a star-point copper busbar 100b. For example, in a three-phase motor, there can be one star-point copper busbar 100b. The star-point copper busbar 100b can be used to connect the output positions of several winding branches of the three phases as a "star point" to form the required three-phase circuit. Of course, the busbar assembly can also be applied to motors with other numbers of phases, such as two-phase motors.

[0028] like Figure 1 As shown, in this embodiment, the busbar assembly includes at least a copper busbar component 100 serving as a phase copper busbar 100a. Several copper busbar components 100 can be configured, each connected to the fixing structure 200, and insulated from each other to prevent short circuits. The fixing structure 200 can be made of injection molding material, and the several copper busbar components 100 can be injection molded together using the fixing structure 200. During injection molding, at least a portion of the copper busbar component 100 extends beyond the fixing structure 200 to facilitate wiring.

[0029] like Figure 1 As shown, in this embodiment, the fixing structure 200 has a symmetrical axis A, and the fixing structure 200 is symmetrically arranged along the symmetrical axis A. The portions of several copper busbars 100 extending beyond the fixing structure 200 are also symmetrically arranged along the symmetrical axis A, so that the entire busbar assembly is symmetrically arranged along the symmetrical axis A.

[0030] Of course, in some embodiments, the bus assembly may further include a copper busbar 100 serving as a star busbar 100b. Similarly, the copper busbar 100 serving as the star busbar 100b may at least partially extend beyond the fixed structure 200 to facilitate wiring. Furthermore, in this embodiment, the portion of the copper busbar 100 serving as the star busbar 100b extending beyond the fixed structure 200 is symmetrically arranged along the axis of symmetry A of the fixed structure 200 with the portion of the copper busbar 100 serving as the phase busbar 100a extending beyond the fixed structure 200.

[0031] It is understood that by symmetrically arranging the fixed structure 200 on the left and right, and symmetrically arranging the portions of several copper busbars 100 extending beyond the fixed structure 200 along the axis of symmetry A of the fixed structure 200, the busbar assembly can form a symmetrical structure as a whole. When applied to dual motors, it can be used both before and after mirroring to simultaneously meet the usage requirements of dual motors without increasing additional design and mold costs. Thus, the present application can reduce its manufacturing cost.

[0032] Specifically, the copper busbar 100 includes a copper busbar body 110 and solder terminals 120, with the copper busbar body 110 connected to the solder terminals 120.

[0033] like Figure 1 and Figure 2 As shown in this embodiment, the copper busbar 100 can include a copper busbar body 110 and solder terminals 120. The copper busbar body 110 can be connected to the solder terminals 120, and the copper busbar body 110 and solder terminals 120 can be integrally formed. When the copper busbar 100 is used as a phase copper busbar 100a, both ends of it need to be connected, so both the copper busbar body 110 and the solder terminals 120 of the copper busbar 100 can extend beyond the fixed structure 200. However, when the copper busbar 100 is used as a star-point copper busbar 100b, one end is connected as a "star point". Therefore, the copper busbar 100 only needs its solder terminals 120 to extend beyond the fixed structure 200, while its copper busbar body 110 can extend beyond the fixed structure 200 or be disposed within the fixed structure 200. It is easy to see that, regardless of which structure the copper busbar 100 is used in, the portions of several copper busbars 100 extending beyond the fixed structure 200 need to be symmetrically arranged along the axis of symmetry A.

[0034] It is understood that, by reasonably setting the structure of the copper busbar 100, this embodiment facilitates the extension of a suitable portion of the copper busbar 100 beyond the fixing structure 200 according to actual needs, so that the portion of the copper busbar 100 extending beyond the fixing structure 200 is symmetrically arranged along the axis of symmetry A of the fixing structure 200.

[0035] More specifically, the type of copper busbar 100 includes phase copper busbar 100a, with three phase copper busbars 100a. The copper busbar bodies 110 of the three phase copper busbars 100a extend at least partially beyond the fixing structure 200. The portion of the copper busbar body 110 of one phase copper busbar 100a extending beyond the fixing structure 200 is arranged on the axis of symmetry A and symmetrically arranged along the axis of symmetry A. The portions of the copper busbar bodies 110 of the other two phase copper busbars 100a extending beyond the fixing structure 200 are symmetrically arranged along the axis of symmetry A.

[0036] like Figure 1 and Figure 2As shown in this embodiment, by way of example, according to the foregoing, the type of copper busbar 100 may include phase copper busbar 100a, and there may be three phase copper busbars 100a. The copper busbar bodies 110 of each phase extend at least partially beyond the fixed structure 200. In this case, the busbar assembly can be applied to a three-phase motor. The three phase copper busbars 100a can correspond one-to-one with the three phases of the three-phase motor, and the input positions of all branches of the corresponding phase are connected. For example, each phase includes n parallel branches, where n is a positive integer, and each phase copper busbar 100a is connected to the input positions of its corresponding n branches. The phase copper busbar 100a can be connected to the input positions of each branch through its solder terminals 120, and its copper busbar body 110 can connect several solder terminals 120 corresponding to the same phase into one unit. The three phases of a three-phase motor can be U-phase, V-phase, and W-phase, and the three phase copper busbars 100a can correspond to U-phase copper busbar 100a, V-phase copper busbar 100a, and W-phase copper busbar 100a, respectively. Here, "U," "V," and "W" are only used for convenient description of the three phases of the three-phase motor and are not intended to limit them in any way. In some embodiments, the three phases of the three-phase motor may also be represented by other designations.

[0037] In this embodiment, when three phase copper busbars 100a are set, the part of the copper busbar body 110 of one phase copper busbar 100a that extends beyond the fixed structure 200 can be set on the axis of symmetry A of the fixed structure 200 and symmetrically arranged on the left and right sides along the axis of symmetry of the fixed structure 200. The portions of the copper busbar bodies 110 of the other two phase copper busbars 100a extending beyond the fixed structure 200 are symmetrically arranged along the axis of symmetry A on both sides of the portion of the copper busbar body 110 of the aforementioned phase copper busbar 100a extending beyond the fixed structure 200. For example, the portion of the copper busbar body 110 of the V phase copper busbar 100a extending beyond the fixed structure 200 is arranged on the axis of symmetry A of the fixed structure 200, while the portions of the copper busbar bodies 110 of the U phase copper busbar 100a and the portions of the copper busbar bodies 110 of the W phase copper busbar 100a extending beyond the fixed structure 200 are symmetrically arranged along the axis of symmetry A of the fixed structure 200 on both sides of the portion of the copper busbar body 110 of the V phase copper busbar 100a extending beyond the fixed structure 200. Of course, in some embodiments, the portions of the copper busbar bodies 110 of the three phase copper busbars 100a extending beyond the fixed structure 200 can also be distributed as VUW and VWU.

[0038] It is understandable that when several copper busbar components 100 include three phase copper busbars 100a, this embodiment can facilitate the symmetrical arrangement of several copper busbar components 100 as a whole along the symmetry axis A of the fixed structure 200 by reasonably setting the distribution of the parts of the copper busbar bodies 110 of the three phase copper busbars 100a extending outside the fixed structure 200.

[0039] More specifically, the type of copper busbar 100 also includes star-shaped copper busbar 100b, which is set as one or more, and the copper busbar body 110 of the star-shaped copper busbar 100b is set within the fixed structure 200.

[0040] like Figure 1 and Figure 2 As shown in this embodiment, by way of example, according to the foregoing, the type of copper busbar 100 may also include a star-point copper busbar 100b. A single star-point copper busbar 100b can be configured, meaning that the outgoing wire positions of all branches of the three phases of the three-phase motor are connected together to form a single star point. In the aforementioned example, there are a total of 3n branches across the three phases, and the outgoing wire positions of these 3n branches can be connected to form a single star point. Of course, in some embodiments, there can also be several star-point copper busbars 100b, the number of which can be equal to and correspond one-to-one with the number of parallel branches of any phase of the three-phase motor. In this case, the star-point copper busbar 100b is connected to the outgoing wire positions of the three corresponding branches to form several star points; while in the aforementioned example, the outgoing wire positions of the 3n branches across the three phases can be connected to form n star points, each star point being formed by connecting the outgoing wire positions of the same branch of the three phases. The star-shaped copper busbar 100b can be connected to the outgoing lines of each branch through its solder terminals 120, and its copper busbar body 110 can connect several solder terminals 120 that need to be connected as star points into one unit. Regardless of whether there is one or several star-shaped copper busbars 100b, its copper busbar body 110 is set inside the fixed structure 200, that is, the fixed structure 200 completely covers the copper busbar body 110 of the star-shaped copper busbar 100b.

[0041] It is understandable that when the plurality of copper busbar components 100 also include star-shaped copper busbars 100b, this embodiment sets the copper busbar body 110 of the star-shaped copper busbars 100b within the fixed structure 200, which facilitates the further realization of the symmetrical arrangement of the plurality of copper busbar components 100 along the axis of symmetry A of the fixed structure 200.

[0042] More specifically, each phase copper busbar 100a has n solder terminals 120, and the star copper busbar 100b has a total of 3n solder terminals 120, where n is a positive integer. All 6n solder terminals 120 extend at least partially beyond the fixed structure 200, and the portions of the 6n solder terminals 120 extending beyond the fixed structure 200 are symmetrically arranged along the axis of symmetry A.

[0043] like Figure 1 and Figure 2As shown in this embodiment, the number of solder terminals 120 of the copper busbar 100 depends on the number of parallel branches of any phase of the three-phase motor. The number of parallel branches of any phase of the three-phase motor can be n, where n can be a positive integer, such as 1, 2, or 3. The number of solder terminals 120 of the phase copper busbar 100a can be set to n, to be connected to the input positions of the n branches of that phase respectively. The number of solder terminals 120 of the star-point copper busbar 100b can be set to 3n, to be connected to the output positions of the 3n winding branches of the three phases. The three phase copper busbars 100a and one star-point copper busbar 100b have a total of 6n solder terminals 120. When these 6n solder terminals 120 are connected to the fixed structure 200, they all extend at least partially beyond the fixed structure 200, and the portions of the 6n solder terminals 120 extending beyond the fixed structure 200 are symmetrically arranged along the axis of symmetry A.

[0044] It is understood that, by reasonably setting the distribution of the portions of the solder terminals 120 of several copper busbars 100 extending beyond the fixed structure 200 along the axis of symmetry A of the fixed structure 200, this embodiment facilitates further symmetrical arrangement of several copper busbars 100 as a whole along the axis of symmetry A of the fixed structure 200.

[0045] Specifically, the portions of the solder terminals 120 of several copper busbars 100 that extend beyond the fixing structure 200 all extend in the same direction.

[0046] like Figure 1 and Figure 2 As shown in this embodiment, by way of example, when the solder terminals 120 of the copper busbar 100 extend beyond the fixing structure 200, they can all extend along the axial direction of the three-phase motor; similarly, the input and output positions of each branch of the stator winding of the three-phase motor can also extend a short distance along the axial direction of the three-phase motor to facilitate connection with the solder terminals 120. The connection method between the solder terminals 120 and the input and output positions of each branch can be welding, and the fact that both extend in the same direction can improve the stability after welding.

[0047] It is understood that this embodiment, by reasonably setting the extension direction of the portion of the solder terminal 120 extending beyond the fixing structure 200, facilitates the stability of the solder terminal 120 after wiring.

[0048] More specifically, the portions of the solder terminals 120 of several copper busbars 100 that extend beyond the fixing structure 200 are flush with their extension direction.

[0049] like Figure 1 and Figure 2As shown in this embodiment, it is exemplarily illustrated that when the solder terminals 120 of several copper busbars 100 extend beyond the fixing structure 200 along the axial direction of the three-phase motor, they remain flush along that direction. This method facilitates ensuring the accuracy of the busbar assembly installation position, thereby improving its stability.

[0050] More specifically, the projection of the fixing structure 200 along the extension direction of the portion of the solder terminals 120 of the plurality of copper busbars 100 extending beyond the fixing structure 200 is arc-shaped.

[0051] like Figure 1 and Figure 2 As shown in this embodiment, by way of example, the portion of the solder terminal 120 extending beyond the fixing structure 200 extends along the axial direction of the three-phase motor, and the projection of the fixing structure 200 along this direction is the projection of the fixing structure 200 in a section perpendicular to the axis of the three-phase motor, which is arranged in an arc shape in the section, that is, extending along the circumferential direction of the three-phase motor.

[0052] It is understood that this embodiment makes it easy to achieve a symmetrical arrangement of the fixing structure 200 by reasonably setting the shape of the fixing structure 200.

[0053] More specifically, the solder terminals 120 of several copper busbars 100 extending beyond the fixing structure 200 are all located close to the inner or outer periphery of the fixing structure 200.

[0054] like Figure 1 and Figure 2 As shown in this embodiment, by way of example, when the fixing structure 200 is arc-shaped, it has an inner circumferential side close to the axis of the three-phase motor and an outer circumferential side away from the axis of the three-phase motor along the radial direction of the fixing structure 200. When the copper busbar terminals of a plurality of copper busbar components 100 extend beyond the fixing structure 200, they are all located close to the inner circumferential side or the outer circumferential side of the fixing structure 200. In this embodiment, the latter is taken as an example.

[0055] It is understood that, by reasonably setting the portion of the solder terminals 120 of several copper busbar components 100 extending beyond the fixed structure 200 along the radial position of the fixed structure 200, it is easier to connect the copper busbar terminals of several copper busbar components 100.

[0056] Specifically, the fixing structure 200 includes a fixing base 210 and a thickening portion 220. The thickening portion 220 is connected to the fixing base 210, and the height of the thickening portion 220 is greater than the height of the fixing base 210. The fixing base 210 and the thickening portion 220 are symmetrically arranged along the axis of symmetry A. The copper busbar bodies 110 of several copper busbar components 100 extend out of the fixing structure 200 from the thickening portion 220.

[0057] like Figure 1 and Figure 2 As shown in this embodiment, by way of example, the fixed base 210 and the thickened portion 220 can be integrally molded, that is, integrally injection molded during injection molding. Meanwhile, the fixed base 210 and the thickened portion 220 are symmetrically arranged along the axis of symmetry A. The thickened portion 220 can be located in the middle of the fixed base 210, and its height can be greater than the height of the fixed base. To avoid short circuits between several copper busbars 100, it is usually necessary to stagger the several copper busbars 100, including staggering the copper busbar bodies 110 of the copper busbars 100. Specifically, the middle of the copper busbar 100 can be bent so that the copper busbar body 110 of one copper busbar 100 passes directly below or directly below the copper busbar body 110 of another copper busbar 100, for example, the copper busbar bodies 110 of two phase copper busbars 100a pass directly above the copper busbar body 110 of the star-point copper busbar 100b. By providing the thickened portion 220, the staggered parts of the copper busbar bodies 110 of the several copper busbar components 100 can be completely covered, thus avoiding unnecessary exposure of the copper busbar components 100. After the staggered arrangement, the copper busbar bodies 110 of the several copper busbar components 100 can all extend beyond the fixing structure 200 from the position of the thickened portion 220.

[0058] It is understood that in this embodiment, by setting the fixing structure 200 as a fixing base 210 and a thickening part 220, and by having the copper busbar body 110 of the copper busbar component 100 extend out of the fixing structure 200 from the thickening part 220, the fixing structure 200 can completely cover the parts of the copper busbar bodies 110 of the several copper busbar components 100 that are staggered, under the premise of satisfying the symmetrical arrangement about its axis of symmetry A.

[0059] The implementation principle of the symmetrical bus assembly provided in Embodiment 1 of this application is as follows:

[0060] During fabrication, three phase copper busbars 100a and one star-shaped copper busbar 100b are first formed. Then, the three phase copper busbars 100a and one star-shaped copper busbar 100b are placed in designated positions. Finally, the three phase copper busbars 100a and one star-shaped copper busbar 100b are injection molded together using a fixing structure 200. After injection molding, the fixing structure 200 is symmetrically arranged on both sides and has a symmetry axis A. Of the three copper busbar components 100, the portion of the copper busbar body 110 of one component extends beyond the fixing structure 200 and is positioned along the symmetry axis A. The portions of the copper busbar bodies 110 of the other two components extend beyond the fixing structure 200 and are symmetrically arranged along the symmetry axis A. Simultaneously, the portions of the solder terminals 120 of the three phase copper busbars 100a and one star-shaped copper busbar 100b extending beyond the fixing structure 200 are also symmetrically arranged along the symmetry axis A.

[0061] This application achieves a symmetrical structure for the busbar assembly by symmetrically arranging the fixed structure 200 on both sides and symmetrically arranging the portions of several copper busbars 100 extending beyond the fixed structure 200 along the axis of symmetry A of the fixed structure 200. When applied to dual motors, it can be used both before and after mirroring to simultaneously meet the usage requirements of dual motors without increasing additional design and mold costs, thereby reducing its manufacturing cost.

[0062] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0063] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A symmetrical busbar assembly, characterized in that, The symmetrical bus assembly includes: A fixed structure (200) is symmetrically arranged on the left and right sides and has a symmetrical axis; A plurality of copper busbars (100) are provided, each of which is connected to the fixing structure (200) and extends at least partially beyond the fixing structure (200). The portions of the plurality of copper busbars (100) extending beyond the fixing structure (200) are symmetrically arranged along the axis of symmetry.

2. The symmetrical busbar assembly according to claim 1, characterized in that, The copper busbar component (100) includes a copper busbar body (110) and solder terminals (120), with the copper busbar body (110) connected to the solder terminals (120).

3. The symmetrical busbar assembly according to claim 2, characterized in that, The type of the copper busbar (100) includes a phase copper busbar (100a), and there are three phase copper busbars (100a). The copper busbar body (110) of each of the three phase copper busbars (100a) extends at least partially beyond the fixed structure (200). The portion of the copper busbar body (110) of one phase copper busbar (100a) extending beyond the fixed structure (200) is arranged on the axis of symmetry and is symmetrically arranged along the axis of symmetry. The portions of the copper busbar bodies (110) of the other two phase copper busbars (100a) extending beyond the fixed structure (200) are symmetrically arranged along the axis of symmetry.

4. The symmetrical busbar assembly according to claim 3, characterized in that, The type of copper busbar (100) also includes star-shaped copper busbar (100b), wherein the star-shaped copper busbar (100b) is configured as one or more, and the copper busbar body (110) of the star-shaped copper busbar (100b) is disposed within the fixed structure (200).

5. The symmetrical busbar assembly according to claim 4, characterized in that, Each of the phase copper busbars (100a) has n solder terminals (120), and the star copper busbars (100b) have a total of 3n solder terminals (120), where n is a positive integer. All 6n solder terminals (120) extend at least partially beyond the fixed structure (200), and the portions of the 6n solder terminals (120) extending beyond the fixed structure (200) are symmetrically arranged along the axis of symmetry.

6. The symmetrical bus assembly according to claim 5, characterized in that, The portions of the solder terminals (120) of several of the copper busbars (100) that extend beyond the fixing structure (200) all extend in the same direction.

7. The symmetrical bus assembly according to claim 6, characterized in that, The portions of the solder terminals (120) of several of the copper busbars (100) extending beyond the fixing structure (200) are flush with their extension direction.

8. The symmetrical busbar assembly according to claim 5, characterized in that, The projection of the fixed structure (200) along the extension direction of the portion of the solder terminals (120) of the plurality of copper busbars (100) extending beyond the fixed structure (200) is arc-shaped.

9. The symmetrical busbar assembly according to claim 8, characterized in that, The portions of the solder terminals (120) of several copper busbars (100) extending beyond the fixing structure (200) are all located close to the inner or outer periphery of the fixing structure (200).

10. The symmetrical busbar assembly according to claim 3, characterized in that, The fixing structure (200) includes a fixing base (210) and a thickening portion (220). The thickening portion (220) is connected to the fixing base (210), and the height of the thickening portion (220) is greater than the height of the fixing base (210). The fixing base (210) and the thickening portion (220) are symmetrically arranged along the axis of symmetry. The copper busbar bodies (110) of a plurality of copper busbar components (100) extend beyond the fixing structure (200) from the thickening portion (220).

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