Anti-following-rotation fixing tool for copper bar

Abstract

The utility model provides a copper bar anti-following rotation fixing tool, which relates to the technical field of electric power system terminal connection, and comprises a tool body and a limiting structure, and one end of the tool body is provided with the limiting structure; the end, away from the limiting structure, of the tool body is used for being detachably connected with the open end of the motor shell, the end, provided with the limiting structure, of the tool body is used for stretching into the motor shell, and the limiting structure is used for making contact with the side edge of a motor busbar copper bar so as to limit the motor busbar copper bar to rotate when the motor busbar copper bar and an electric control copper bar are assembled. The tool body is connected with the open end of the motor shell, so that the tool body is fixed on the motor shell, that is, it is ensured that the limiting structure is fixed relative to the motor shell, and the limiting structure is in contact with the corresponding side edge of the motor busbar copper bar, so that the motor busbar copper bar is limited; after the motor busbar copper bar and the electric control copper bar are locked through bolts, the tool can be detached from the motor shell to be reused, and the installation cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of power system terminal connection technology, and more specifically, to a copper busbar anti-rotation fixing fixture. Background Technology

[0002] Motors and electronic control devices are crucial components of electric drive systems, and the reliability of the connection between the motor busbars and the electronic control devices' copper busbars is paramount. Because busbars are flexible, when stacking them with bolts and tightening them, the tightening force can cause the busbars to rotate relative to the electronic control devices, making it difficult to maintain the contact area and affecting electrical clearance. To avoid this problem, existing technologies typically use a three-phase support bracket. This bracket has a limiting groove that holds the connection ends of the busbars and electronic control devices within it. Bolts are then used to tighten the connection ends and the bracket. While the support and limiting function of the three-phase bracket prevents the flexible busbars from rotating during bolt tightening, multiple brackets are required when multiple motor busbars need to connect to their respective electronic control devices, resulting in a large number of components and high installation costs. Utility Model Content

[0003] This utility model aims to solve the technical problem of high installation costs of existing motor busbar copper busbars and electronic control copper busbars for electronic control devices.

[0004] This utility model provides a copper busbar anti-rotation fixing fixture, including a fixture body and a limiting structure, wherein the limiting structure is provided at one end of the fixture body;

[0005] The end of the tooling body away from the limiting structure is used for detachable connection with the open end of the motor housing. The end of the tooling body with the limiting structure is used to extend into the interior of the motor housing, and the limiting structure is used to contact the side of the motor busbar copper bus to restrict the rotation of the motor busbar copper bus to the electrical control copper bus.

[0006] Optionally, the limiting structure is a limiting boss protruding relative to the tooling body, and the tooling body and the limiting boss are respectively used to contact two adjacent sides of the motor busbar copper bus.

[0007] Optionally, the tooling body is used to contact the side of the motor busbar extending in the width direction, and the limiting boss is used to contact the side of the motor busbar extending in the length direction.

[0008] Optionally, multiple limiting bosses are provided, and the multiple limiting bosses are arranged sequentially along the extension direction perpendicular to the tooling body.

[0009] Optionally, the plurality of limiting bosses include two first limiting bosses. The sides of the two first limiting bosses that are close to each other form a first limiting space with the tooling body. The sides of the two first limiting bosses that are far apart from each other form a second limiting space and a third limiting space with the tooling body, respectively. The first limiting space, the second limiting space and the third limiting space are used to limit the three motor busbars.

[0010] Optionally, the plurality of limiting bosses further include a second limiting boss, and at least one of the first limiting bosses is provided with a second limiting boss on the side away from another first limiting boss. The second limiting boss is formed by bending the edge of the tooling body toward the side closer to the first limiting boss.

[0011] Optionally, the tooling body has a notch in the portion between at least one pair of adjacent limiting bosses, the notch extending along the extension direction of the tooling body.

[0012] Optionally, at least a portion of the limiting boss extends out of the tooling body at one end along the extension direction of the tooling body, and the portion of the limiting boss extending out of the tooling body is used to contact the corresponding side of the electrical control copper busbar.

[0013] Optionally, the end of the limiting boss that extends out of the tooling body is provided with a guide slope.

[0014] Optionally, the copper busbar anti-rotation fixing fixture further includes a positioning boss. The fixture body has a connecting part at one end away from the limiting structure. The positioning boss is located on the connecting part and is used to cooperate with the positioning hole on the open end face of the motor housing for installation.

[0015] The copper busbar anti-rotation fixing fixture of this utility model has at least the following advantages compared with the prior art:

[0016] When connecting the motor busbar copper bus and the electrical control busbar copper bus, the connection ends of the motor busbar copper bus and the electrical control busbar copper bus are stacked. One end of the fixture body with the limiting structure extends into the interior of the motor housing from the open end, and the limiting structure contacts the corresponding side of the motor busbar copper bus. Then, the other end of the fixture body is connected to the open end of the motor housing. This fixes the fixture body on the motor housing, ensuring that the limiting structure remains stationary relative to the motor housing. The limiting structure contacts the corresponding side of the motor busbar copper bus to limit its movement, ensuring that the motor busbar copper bus will not rotate during the process of tightening the motor busbar copper bus and the electrical control busbar with bolts. This ensures a better contact area between the motor busbar copper bus and the electrical control busbar, and guarantees a safe and reliable electrical clearance between adjacent motor busbar copper bus. Compared to the solution of using a three-phase bracket to fix the motor busbar and the electrical control busbar, after the bolts of the motor busbar and the electrical control busbar are tightened, the fixture body of the anti-rotation fixing tool can be disconnected from the motor housing. Furthermore, since the anti-rotation fixing tool and the motor busbar only make contact and limit the movement, and are not connected by bolts, the entire anti-rotation fixing tool can be detached from the motor for reuse. In addition, since the limiting structure of the anti-rotation fixing tool only contacts the side of the motor busbar, it only forms mutual limiting with the motor busbar in a plane perpendicular to the axial direction of the motor housing. They do not limit each other along the axial direction of the motor housing. Therefore, it is convenient to move the anti-rotation fixing tool along the axial direction of the motor housing to remove it from the open end of the motor housing, thus enabling the reuse of the anti-rotation fixing tool. Therefore, in this utility model, only one copper busbar anti-rotation fixing fixture needs to be designed to realize the installation of the motor busbar copper busbar of multiple motors and the corresponding electrical control copper busbar of the electrical control device, thereby reducing the installation cost. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the copper busbar anti-rotation fixing fixture for positioning the motor busbar copper busbar in an embodiment of this utility model;

[0018] Figure 2 This is a schematic diagram of the connection structure of the motor busbar copper bus and the electronic control copper bus in an embodiment of this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the copper busbar anti-rotation fixing fixture according to an embodiment of the present utility model;

[0020] Figure 4 This is a schematic diagram of another structure of the copper busbar anti-rotation fixing fixture according to an embodiment of the present utility model;

[0021] Figure 5 This is a schematic diagram of the internal structure of the motor housing according to an embodiment of the present utility model;

[0022] Figure 6 This is a schematic diagram of the assembly structure of the copper busbar anti-rotation fixing fixture and the motor housing according to an embodiment of the present utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Tooling body; 11. Notch; 2. Limiting boss; 21. First limiting boss; 22. Second limiting boss; 23. Guide slope; 24. Connecting part; 4. Positioning boss; 5. Motor busbar copper bus; 6. Electrical control copper bus; 7. Motor housing; 71. Open end; 72. Wire hole; 73. Connecting hole; 8. Bolt. Detailed Implementation

[0025] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0026] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fitting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] In addition, it should be noted that in the description of this utility model, the terms and nouns in each embodiment, such as "upper," "lower," "front," and "rear," which indicate the location, are only used to simplify the description of the positional relationship based on the accompanying drawings. They do not mean that the components and devices referred to must be operated in accordance with the specific location and limited operation, method, and structure in the specification. Such directional terms do not constitute a limitation on this utility model.

[0028] This paper establishes an XYZ coordinate system. The Z-axis represents the vertical direction, with the positive Z-axis pointing upwards and the negative Z-axis pointing downwards. It should be noted that the aforementioned Z-axis representation is merely for ease of description and simplification of this invention, and does not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation; therefore, it should not be construed as a limitation of this invention.

[0029] like Figure 1 and Figure 6 As shown, a copper busbar anti-rotation fixing fixture according to an embodiment of the present utility model includes a fixture body 1 and a limiting structure, wherein the limiting structure is provided at one end of the fixture body 1.

[0030] The end of the tooling body 1 away from the limiting structure is detachably connected to the open end of the motor housing 7. The end of the tooling body 1 with the limiting structure is used to extend into the interior of the motor housing 7, and the limiting structure is used to contact the side of the motor busbar copper bus 5 to restrict the rotation of the motor busbar copper bus 5 when it is assembled with the electronic control copper bus 6.

[0031] It should be noted that, taking the central axis of the motor housing 7 as being set along the Z-direction as an example, such as... Figure 5 As shown, the open end 71 of the motor housing 7 faces upward and can be connected to the end plate by bolts. The motor housing 7 contains stator windings and a motor busbar. The motor busbar is located below the stator windings and is a three-phase busbar, consisting of three busbar copper bars 5. These three busbar copper bars 5 are arranged circumferentially around the motor housing. The side wall of the motor housing 7 has a through-hole 72, through which the electrical control copper bar 6 can enter the interior of the motor housing 7 to connect with the motor busbar copper bars 5. Figure 2 As shown. Additionally, it can be understood that the motor busbar copper bus 5 has a sheet-like structure, generally having two opposing surfaces and multiple sides. These sides typically include sides extending along its length and sides extending along its width. The connection ends of the motor busbar copper bus 5 and the electrical control copper bus 6 are provided with through holes. During assembly, the connection ends of the motor busbar copper bus 5 and the electrical control copper bus 6 are stacked, and bolts are used to pass through the through holes on the motor busbar copper bus 5 and the electrical control copper bus 6 respectively to achieve connection. In this embodiment, the limiting structure is used to contact the side of the motor busbar copper bus 5 to restrict the rotation of the motor busbar copper bus 5 during assembly as the bolts are tightened.

[0032] The upper end of the tooling body 1 can be connected to the end face of the open end 71 of the motor housing 7. The lower end of the tooling body 1 is provided with a limiting structure. The tooling body 1 can be integrally formed with the limiting structure. The limiting structure can be parallel and fitted to the corresponding side of the motor busbar copper bus 5.

[0033] In this embodiment, when it is necessary to connect the motor busbar copper bus 5 and the electronic control copper bus 6, the electronic control copper bus 6 extends into the interior of the motor housing 7 through the wire hole 72 on the side wall of the motor housing 7, and the connection ends of the motor busbar copper bus 5 and the electronic control copper bus 6 are stacked, with the motor busbar copper bus 5 located above the electronic control copper bus 6. Then, one end of the tooling body 1 with the limiting structure extends into the interior of the motor housing 7 from the open end 71 of the motor housing 7, and the limiting structure contacts the corresponding side of the motor busbar copper bus 5. Then, the other end of the tooling body 1... The fixture body 1 is connected to the open end 71 of the motor housing 7 to fix the fixture body 1 relative to the motor housing 7. This ensures that the limiting structure remains stationary relative to the motor housing 7. The limiting structure contacts the corresponding side of the motor busbar copper bus 5 to limit the motor busbar copper bus 5. This ensures that the motor busbar copper bus 5 will not rotate during the process of locking the motor busbar copper bus 5 and the electrical control copper bus 6 with bolts 8. The contact area between the motor busbar copper bus 5 and the electrical control copper bus 6 is better guaranteed, and the electrical clearance between adjacent motor busbar copper bus 5 is safe and reliable. Compared to the scheme of using a three-phase bracket to fix the motor busbar copper bus 5 and the electrical control copper busbar 6, in this embodiment, after the bolts 8 of the motor busbar copper busbar 5 and the electrical control copper busbar 6 are tightened, the fixture body 1 of the copper busbar anti-rotation fixing fixture can be disconnected from the motor housing 7. Furthermore, since the copper busbar anti-rotation fixing fixture and the motor busbar copper busbar 5 only make contact and limit each other, and are not connected by bolts, the entire copper busbar anti-rotation fixing fixture can be detached from the motor to achieve reuse. In addition, since the limiting structure of the copper busbar anti-rotation fixing fixture contacts the side of the motor busbar copper busbar 5, they only form mutual limiting with the motor busbar copper busbar 5 in a plane perpendicular to the axial direction of the motor housing 7. They do not limit each other along the axial direction of the motor housing 7. Therefore, it is convenient to move the copper busbar anti-rotation fixing fixture along the axial direction of the motor housing 7 to remove it from the open end 71 of the motor housing 7, so as to achieve reuse of the copper busbar anti-rotation fixing fixture. Therefore, in this embodiment, only one copper busbar anti-rotation fixing fixture is needed to install the motor busbar 5 of multiple motors and the corresponding electronic control copper busbar 6 of the electronic control device, thereby reducing the installation cost.

[0034] Optionally, the limiting structure is a limiting boss 2 protruding relative to the tooling body 1. The tooling body 1 and the limiting boss 2 are respectively used to contact two adjacent sides of the motor busbar copper bus 5. The limiting structure uses the limiting boss 2, which is simple in structure. The angle between the limiting boss 2 and the tooling body 1 can be designed according to the shape of the motor busbar copper bus 5, and can be an acute angle or a right angle, etc. Under the premise that the limiting boss 2 is in contact with one side of the motor busbar copper bus 5, by making the tooling body 1 contact the other side of the motor busbar copper bus 5, better limiting of the motor busbar copper bus 5 can be achieved, effectively preventing it from rotating when assembled with the electronic control copper bus 6.

[0035] like Figure 1 , Figure 3 and Figure 4 As shown, optionally, the tooling body 1 is used to contact the side of the motor busbar copper bus 5 extending in the width direction, and the limiting boss 2 is used to contact the side of the motor busbar copper bus 5 extending in the length direction.

[0036] Specifically, the limiting boss 2 is set perpendicularly to the tooling body 1. The tooling body 1 can be a thin plate-like structure that extends approximately along the Z direction, with the thickness direction of the tooling body 1 being the Y direction. The limiting boss 2 can be a thin plate-like structure, with the thickness direction of the limiting boss 2 being the X direction.

[0037] In this embodiment, the motor busbar copper bus 5 and the electrical control copper busbar 6 are rectangular sheet structures. The section of the motor busbar copper busbar 5 used to connect with the electrical control copper busbar 6 is horizontally arranged. The motor busbar copper busbar 5 and the electrical control copper busbar 6 are stacked one on top of the other. By making the XZ side of the tooling body 1 parallel to the side extending along the width direction of the motor busbar copper busbar 5, and the YZ side of the limiting boss 2 parallel to the side extending along the length direction of the motor busbar copper busbar 5, the rotation of the motor busbar copper busbar 5 relative to the electrical control copper busbar 6 is restricted, ensuring the smooth tightening of the bolt 8. Moreover, the tooling body 1 contacts the side extending along the width direction of the motor busbar copper busbar 5, that is, the tooling body 1 is located at one end of the length direction of the motor busbar copper busbar 5. This allows the tooling body 1 to simultaneously contact the side extending along the width direction of multiple spaced motor busbar copper busbars 5, thereby achieving simultaneous limiting of multiple motor busbar copper busbars 5. In addition, the tooling body 1 is located at the end of the motor busbar copper busbar 5 along its length, which makes the tooling body 1 closer to the inner wall of the motor housing, thus avoiding interference between the tooling body 1 and other structures inside the motor housing.

[0038] like Figures 3-4 As shown, optionally, multiple limiting bosses 2 are provided, and the multiple limiting bosses 2 are arranged sequentially along the extension direction perpendicular to the tooling body 1.

[0039] Specifically, the fixture body 1 can be extended approximately along the Z direction. The lower end of the fixture body 1 is provided with multiple limiting protrusions 2 spaced apart along the X direction. When the lower end of the fixture body 1 is inserted into the motor housing 7, the multiple limiting protrusions 2 are also inserted into the motor housing 7 together. The multiple limiting protrusions 2 can be inserted between multiple motor busbars 5, that is, the limiting protrusions 2 and the motor busbars 5 are arranged alternately. Each limiting protrusion 2 contacts the side of the corresponding motor busbar 5 extending along the length direction, and the fixture body 1 simultaneously contacts the side of each motor busbar 5 extending along the width direction. This achieves simultaneous limiting of multiple motor busbars 5, thereby improving the connection efficiency between the multiple motor busbars 5 and the electrical control busbar 6.

[0040] like Figures 3-4 As shown, optionally, the plurality of limiting bosses 2 include two first limiting bosses 21. The sides of the two first limiting bosses 21 that are close to each other form a first limiting space with the tooling body 1. The sides of the two first limiting bosses 21 that are far apart from each other form a second limiting space and a third limiting space with the tooling body 1, respectively. The first limiting space, the second limiting space and the third limiting space are respectively used to limit the three motor busbars 5.

[0041] In this embodiment, the three motor busbars 5 can be the U, V, and W phase busbars of the three-phase motor busbars. When the anti-rotation fixing fixture is used to limit the three phase busbars of the three-phase motor busbars, it can be provided with two first limiting protrusions 21 to divide the fixture body 1 into three spaces along the negative Y-axis. Specifically, the two opposite surfaces of the two first limiting protrusions 21 form a first limiting space with the fixture body 1, one first limiting protrusion 21 forms a second limiting space with the fixture body 1, and the other first limiting protrusion 21 forms a third limiting space with the fixture body 1. The three phase busbars are inserted into the three limiting spaces respectively, and each phase busbar is in contact with the fixture body 1 and the corresponding first limiting protrusion 21 to achieve simultaneous limiting and anti-rotation of the three phase busbars.

[0042] It should be noted that the first limiting space has a U-shaped limiting surface. The two sides of the phase copper busbar located in the first limiting space can respectively contact the two opposite sides of the U-shape, that is, the two opposite sides of the two first limiting protrusions 21, so as to achieve better limiting of the middle phase copper busbar.

[0043] The number of first limiting bosses 21 can be reasonably designed according to the number of copper busbars 5 of the motor busbars that need to be limited, or according to the number of phases of the multi-phase motor busbars. For example, when it is necessary to limit the copper busbars of a four-phase motor busbar, three first limiting bosses 21 can be set.

[0044] like Figure 4 As shown, optionally, the plurality of limiting protrusions 2 further include a second limiting protrusion 22, and at least one of the first limiting protrusions 21 is provided with a second limiting protrusion 22 on the side away from the other first limiting protrusion 21. The second limiting protrusion 22 is formed by bending the edge of the tooling body 1 toward the side close to the first limiting protrusion 21.

[0045] Specifically, the shape of the second limiting protrusion 22 may differ from the shape of the first limiting protrusion 21. One or two second limiting protrusions 22 may be provided. That is, the second limiting protrusion 22 may be provided only on the side of one of the first limiting protrusions 21 that is far from the other, or the second limiting protrusions 22 may be provided on the sides of the two first limiting protrusions 21 that are far from each other. For ease of description, the following explanation will use the example of providing the second limiting protrusion 22 on the side of one of the first limiting protrusions 21 that is far from the other.

[0046] In this embodiment, with the two first limiting bosses 21 dividing one side of the tooling body 1 along the negative Y-axis into three spaces to limit the movement of the three motor busbars 5 respectively, a second limiting boss 22 is provided on the side of one of the first limiting bosses 21 away from the other. This allows the second limiting boss 22 and the corresponding first limiting boss 21 to contact the two sides of the motor busbars 5 extending along the length direction, achieving better limiting of the motor busbars 5 on that side. Furthermore, the second limiting boss 22 is formed by bending the edge of the tooling body 1, simplifying the forming process.

[0047] like Figure 3 As shown, optionally, the tooling body 1 has a notch 11 between at least one pair of adjacent limiting bosses 2, and the notch 11 extends along the extension direction of the tooling body 1. The notch 11 can be a U-shaped notch with the opening facing downwards, which on the one hand allows the tooling body 1 to have a certain deformation capacity, increases installation flexibility, and prevents increased assembly difficulty due to over-positioning; on the other hand, it can reduce material usage and lower costs.

[0048] Optionally, at least a portion of the limiting boss 2 extends out of the tooling body 1 along a direction perpendicular to the preset direction, and the portion of the limiting boss 2 extending out of the tooling body 1 is used to contact the corresponding side of the electronically controlled copper busbar 6.

[0049] Specifically, the upper end of the limiting boss 2 is connected to the tooling body 1, and the lower end of part of the limiting boss 2 can extend downwards out of the tooling body 1. When multiple motor busbar copper busbars 5 are provided, the multiple motor busbar copper busbars 5 can be spaced apart along the X-axis. The multiple motor busbar copper busbars 5 are stacked on top of their corresponding electrical control copper busbars 6 (the motor busbar copper busbars 5 are located above the electrical control copper busbars 6). Each motor busbar copper busbar 5 and its corresponding electrical control copper busbar 6 form a copper busbar group. Multiple copper busbar groups are spaced apart along the X-axis. Then, the multiple limiting bosses 2 of the tooling body 1 are inserted downwards between two adjacent copper busbar groups, so that the tooling... The main body 1 abuts against the side of the motor busbar copper bus 5 extending in the width direction, and the limiting boss 2 abuts against the side of the motor busbar copper bus 5 extending in the length direction and the side of the electrical control copper bus 6 extending in the length direction, thereby achieving alignment and limiting of the motor busbar copper bus 5 and the electrical control copper bus 6. During the process of the bolt 8 locking the motor busbar copper bus 5 and the electrical control copper bus 6, the rotation of the motor busbar copper bus 5 relative to the electrical control copper bus 6 is restricted, ensuring the contact area of ​​the motor busbar copper bus 5 and the electrical control copper bus 6.

[0050] like Figures 3-4 As shown, optionally, the end of the limiting boss 2 extending out of the tooling body 1 is provided with a guide slope 23. The guide slope 23 can be an inverted conical slope. By utilizing the guiding effect of the guide slope 23, the limiting boss 2 can be smoothly inserted between two adjacent motor busbar copper busbars 5, thereby improving the installation efficiency of the copper busbar anti-rotation fixing tool.

[0051] like Figure 3 As shown, optionally, the copper busbar anti-rotation fixing fixture also includes a positioning boss 4. The fixture body 1 has a connecting portion 24 at the end furthest from the limiting structure. The positioning boss 4 is located on the connecting portion 24 and is used to mate with a positioning hole on the end face of the open end 71 of the motor housing 7. The connecting portion 24 can be bent outwards towards the motor housing 7 to facilitate connection with the open end 71 of the motor housing 7. The end face of the open end 71 of the motor housing 7 has a connecting hole 73 for connecting with an end plate. The connecting hole 73 can form a positioning hole. By mates with the positioning boss 4 and the positioning hole, the positioning assembly between the copper busbar anti-rotation fixing fixture and the motor housing 7 is achieved, making installation simple and convenient.

[0052] Two positioning bosses 4 can be provided. The two positioning bosses 4 are respectively engaged with the corresponding positioning holes to improve the positioning effect between the copper busbar anti-rotation fixing fixture and the motor housing 7.

[0053] Although the present invention has been disclosed above, its protection scope is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the protection scope of the present invention.

Claims

1. A copper busbar anti-rotation fixing fixture, characterized in that, It includes a tooling body (1) and a limiting structure, wherein the limiting structure is provided at one end of the tooling body (1); The end of the tooling body (1) away from the limiting structure is detachably connected to the open end of the motor housing (7). The end of the tooling body (1) with the limiting structure is used to extend into the interior of the motor housing (7), and the limiting structure is used to contact the side of the motor busbar copper bus (5) to restrict the rotation of the motor busbar copper bus (5) when it is assembled with the electrical control copper bus (6).

2. The copper busbar anti-rotation fixing fixture according to claim 1, characterized in that, The limiting structure is a limiting boss (2) protruding relative to the tooling body (1). The tooling body (1) and the limiting boss (2) are respectively used to contact the two adjacent sides of the motor busbar copper bus (5).

3. The copper busbar anti-rotation fixing fixture according to claim 2, characterized in that, The tooling body (1) is used to contact the side of the motor busbar copper bus (5) extending in the width direction, and the limiting boss (2) is used to contact the side of the motor busbar copper bus (5) extending in the length direction.

4. The copper busbar anti-rotation fixing fixture according to claim 2, characterized in that, The limiting boss (2) is provided in multiple ways, and the multiple limiting bosses (2) are arranged sequentially along the extension direction perpendicular to the tooling body (1).

5. The copper busbar anti-rotation fixing fixture according to claim 4, characterized in that, The plurality of limiting bosses (2) include two first limiting bosses (21). The side of the two first limiting bosses (21) that are close to each other forms a first limiting space with the tooling body (1). The side of the two first limiting bosses (21) that are far apart from each other forms a second limiting space and a third limiting space with the tooling body (1), respectively. The first limiting space, the second limiting space and the third limiting space are used to limit the three motor busbars (5).

6. The copper busbar anti-rotation fixing fixture according to claim 5, characterized in that, The plurality of limiting bosses (2) further include a second limiting boss (22), at least one of the first limiting bosses (21) is provided with the second limiting boss (22) on the side away from the other first limiting boss (21), and the second limiting boss (22) is formed by bending the edge of the tooling body (1) toward the side close to the first limiting boss (21).

7. The copper busbar anti-rotation fixing fixture according to claim 4, characterized in that, The tooling body (1) has a notch (11) in the portion between at least one pair of adjacent limiting bosses (2), the notch (11) extending along the extension direction of the tooling body (1).

8. The copper busbar anti-rotation fixing fixture according to claim 4, characterized in that, At least a portion of the limiting boss (2) extends out of the tooling body (1) along the extension direction of the tooling body (1), and the portion of the limiting boss (2) extending out of the tooling body (1) is used to contact the corresponding side of the electrical control copper busbar (6).

9. The copper busbar anti-rotation fixing fixture according to claim 8, characterized in that, The limiting boss (2) has a guide slope (23) at one end extending out of the tooling body (1).

10. The copper busbar anti-rotation fixing fixture according to any one of claims 1-9, characterized in that, It also includes a positioning boss (4). The tooling body (1) has a connecting part (24) at one end away from the limiting structure. The positioning boss (4) is located on the connecting part (24) and is used to cooperate with the positioning hole on the end face of the open end (71) of the motor housing (7) for installation.

Images