Anti-loosening connecting piece of conductive copper bar fixing structure

Abstract

The utility model relates to the field of electrical connection, concretely relates to a kind of anti-loose connecting piece of electrically-conductive copper bar fixing structure, including electrically-conductive copper bar and fixed connection subassembly, the left side of electrically-conductive copper bar is provided with connecting section, electrically-conductive copper bar is detachably connected with copper bar connecting seat by fixed connection subassembly, the fixed connection subassembly includes screw and connecting column, the connecting column is vertically fixedly connected in copper bar connecting seat inner wall, the top of connecting column is equipped with threaded hole, the screw is threadedly connected in threaded hole, electrically-conductive copper bar is fixedly connected with copper bar connecting seat by screw. Through being provided with the meshing structure of sawtooth cooperation surface and sawtooth cooperation groove, the axial compression effect of fixed connection subassembly is combined, and by electrically-conductive convex point embedding electrically-conductive recess, the contact mode of multiple-point surface increases actual electrically-conductive contact area, reduces contact resistance, avoids local overheating, guarantees the stability and reliability of current transmission path.

Description

Technical Field

[0001] This utility model relates to the field of electrical connections, specifically to an anti-loosening connector for a conductive copper busbar fixing structure. Background Technology

[0002] In modern electrical systems, conductive copper busbars, as core components for high-current transmission, are widely used in equipment such as battery management systems, inverters, and frequency converters. Currently, traditional rigid copper busbars mostly adopt an integrated rectangular copper bar structure, with both ends fixed to electrical components such as battery terminals and power module wiring terminals by bolts.

[0003] However, under conditions of continuous vibration or frequent temperature changes, traditional connection methods are prone to the following problems: mechanical vibration causes the thread preload to be gradually lost, resulting in a decrease in contact pressure, which in turn leads to an increase in contact resistance, local overheating, or even burnout. At the same time, planar contact methods are prone to point contact after slight displacement or oxidation, resulting in unstable conductivity and increasing the unreliability of the system.

[0004] Therefore, it is necessary to invent an anti-loosening connector for a conductive copper busbar fixing structure to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide an anti-loosening connector for a conductive copper busbar fixing structure. By using the meshing structure of the sawtooth mating surface and the sawtooth mating groove, combined with the axial pressing effect of the fixing connection component, the problems of decreased contact pressure and unstable conductivity in the prior art can be solved.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an anti-loosening connector for a conductive copper busbar fixing structure, comprising a conductive copper busbar and a fixing connection assembly. A connecting section is provided on the left side of the conductive copper busbar. The conductive copper busbar is detachably connected to a copper busbar connecting seat via the fixing connection assembly. The fixing connection assembly includes a screw and a connecting post. The connecting post is vertically fixed to the inner wall of the copper busbar connecting seat. A threaded hole is opened at the top of the connecting post, and the screw is threaded into the threaded hole. The conductive copper busbar is fixedly connected to the copper busbar connecting seat via the screw. A serrated mating surface and a serrated mating groove are fixedly connected to the bottom of the connecting section and the top right side of the copper busbar connecting seat. The number of serrated mating grooves and the copper busbar connecting seat are equal, and their positions correspond one-to-one. A conductive protrusion is fixedly connected to the bottom of the connecting section, and a conductive groove corresponding to the conductive protrusion is opened at the top of the copper busbar connecting seat.

[0007] Preferably, the surface of the conductive copper busbar is provided with a through groove that penetrates the upper and lower surfaces of the conductive copper busbar, and the through groove extends along the length direction of the conductive copper busbar.

[0008] Preferably, an integrally formed limiting member is fixedly connected to the front side of the copper busbar connector, and the limiting member is L-shaped.

[0009] Preferably, the surface of the copper busbar connector is covered with an insulating protective sleeve.

[0010] Preferably, a stepped structure is formed between the top surface of the connecting segment and the top surface of the conductive copper busbar body, and the height difference of the step is equal to the thickness of the copper busbar connector.

[0011] Preferably, the conductive copper busbar and the copper busbar connector are provided with at least two circular holes on the opposite ends of each other.

[0012] The technical effects and advantages provided by this utility model in the above technical solution are as follows: This utility model features a meshing structure with a serrated mating surface and a serrated mating groove. Combined with the axial clamping effect of the fixed connection component, it prevents the conductive copper busbar from slipping under lateral vibration, thus improving connection stability. Furthermore, the conductive protrusions are embedded in the conductive grooves, and the multi-point contact method increases the actual conductive contact area, reduces contact resistance, avoids local overheating, and ensures the stability and reliability of the current transmission path. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0014] Figure 1 This is a three-dimensional structural diagram of the overall device in this utility model; Figure 2 This is a three-dimensional structural breakdown diagram of the conductive copper busbar, copper busbar connector, and fixed connection assembly in this utility model. Figure 3 This is a three-dimensional structural disassembly diagram of the conductive copper busbar, copper busbar connector, and fixed connection assembly from another perspective of the present invention. Figure 4 This is a three-dimensional structural diagram of the entire invention from another perspective.

[0015] Legend: 11. Conductive copper busbar; 12. Copper busbar connector; 13. Connecting section; 14. Through groove; 15. Insulating protective sleeve; 16. Limiting component; 17. Round hole; 2. Fixed connection assembly; 21. Screw; 22. Connecting post; 23. Threaded hole; 24. Serrated mating surface; 25. Serrated mating groove; 26. Conductive protrusion; 27. Conductive groove. Detailed Implementation

[0016] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0017] This utility model provides, for example Figure 1 - Figure 3 The diagram illustrates an anti-loosening connector for a conductive copper busbar fixing structure, comprising a conductive copper busbar 11 and a fixing connection assembly 2. A connecting section 13 is provided on the left side of the conductive copper busbar 11. The conductive copper busbar 11 is detachably connected to a copper busbar connector 12 via the fixing connection assembly 2. The fixing connection assembly 2 includes a screw 21 and a connecting post 22. The connecting post 22 is vertically fixed to the inner wall of the copper busbar connector 12, and its axis is perpendicular to the top surface of the copper busbar connector 12. A threaded hole 23 is provided at the top of the connecting post 22, and the screw 21 is threaded into the threaded hole 23. The conductive copper busbar 11 is fixedly connected to the copper busbar connector 12 by the screw 21. The bottom of the connecting section 13 and the right side of the copper busbar connector 12 are also connected. The top of each component is fixedly connected with a serrated mating surface 24 and a serrated mating groove 25. The number of copper busbar connectors 12 and serrated mating grooves 25 are equal and their positions correspond one-to-one. The tooth shape of the serrated mating surface 24 and the serrated mating groove 25 is an isosceles triangle or trapezoid, ensuring a firm meshing and a certain shear resistance. The bottom of the connecting section 13 is fixedly connected with a conductive protrusion 26. The top of the copper busbar connector 12 is provided with a conductive groove 27 corresponding to the conductive protrusion 26, which is used to increase the contact area and ensure the stability of the conductive path. The conductive protrusion 26 is hemispherical or frustum-shaped, made of high conductivity copper alloy, and tin-plated or silver-plated on the surface to reduce contact resistance and improve oxidation resistance.

[0018] like Figure 1 - Figure 3 As shown, a through groove 14 is formed on the surface of the conductive copper busbar 11, extending through the upper and lower surfaces of the conductive copper busbar 11. The through groove 14 extends along the length of the conductive copper busbar 11 to reduce weight, save materials and enhance heat dissipation performance. A limiting member 16 is integrally formed and fixedly connected to the front side of the copper busbar connector 12. The limiting member 16 is L-shaped. The insulating protective sleeve 15 is made of elastic flame-retardant rubber or silicone material. The surface of the copper busbar connector 12 is covered with the insulating protective sleeve 15. The limiting member 16 is used to limit the axial displacement of the insulating protective sleeve 15 and prevent it from loosening and falling off.

[0019] like Figure 1 and Figure 4As shown, a stepped structure is formed between the top surface of the connecting section 13 and the top surface of the main body of the conductive copper busbar 11, and the height difference of the step is equal to the thickness of the copper busbar connector 12. This makes the bottom surface of the main body of the conductive copper busbar 11 flush with the bottom surface of the copper busbar connector 12 after the conductive copper busbar 11 is assembled in place, which facilitates the overall installation and layout. At least two round holes 17 are opened on the opposite ends of the conductive copper busbar 11 and the copper busbar connector 12, respectively, for fixing the conductive copper busbar 11 and the copper busbar connector 12 to external equipment or brackets by bolts.

[0020] The working principle of this utility model is as follows: In use, the copper busbar connector 12 is first fixed to the installation position of the target equipment such as the converter power unit through the round hole 17 at its end. Then, the connecting section 13 of the conductive copper busbar 11 is aligned with the mating area on the top of the copper busbar connector 12 for assembly. During the assembly process, the conductive protrusion 26 at the bottom of the conductive copper busbar 11 and the conductive groove 27 at the top of the copper busbar connector 12 first come into contact with each other and guide each other to achieve quick and accurate alignment and avoid misalignment. At the same time, the serrated mating surface 24 at the bottom of the connecting section 13 meshes with the serrated mating groove 25 at the top of the copper busbar connector 12 to form a mechanical interlocking structure.

[0021] Once assembled, insert screw 21 through the pre-drilled hole on the conductive copper busbar 11 and screw it into the threaded hole 23 at the top of the connecting post 22. Tighten the screw with a tool. As the screw 21 is tightened, the conductive copper busbar 11 is pressed downward, causing the contact pressure between it and the copper busbar connecting seat 12 to increase continuously. At this time, the serrated mating surface 24 and the serrated mating groove 25 achieve tight meshing under axial pressure, forming shear resistance and preventing the conductive copper busbar 11 from slipping or loosening laterally due to vibration during equipment operation, thus improving the mechanical stability of the connection.

[0022] At the same time, multiple conductive bumps 26 form multi-point surface contact with the inner wall of the conductive groove 27 under pressure, which greatly increases the actual conductive contact area, significantly reduces the contact resistance, reduces energy loss and Joule heat generation during current transmission, and can maintain good conductivity for a long time, ensuring the stability and reliability of the high current transmission path.

[0023] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A non-loosening connector for a conductive copper busbar fixing structure, comprising a conductive copper busbar (11) and a fixing connection assembly (2), characterized in that: A connecting section (13) is provided on the left side of the conductive copper busbar (11). The conductive copper busbar (11) is detachably connected to a copper busbar connector (12) via a fixed connecting assembly (2). The fixed connecting assembly (2) includes a screw (21) and a connecting post (22). The connecting post (22) is vertically fixed to the inner wall of the copper busbar connector (12). A threaded hole (23) is provided at the top of the connecting post (22). The screw (21) is threaded into the threaded hole (23). The conductive copper busbar (11) passes through... The connecting section (13) is fixedly connected to the copper busbar connector (12) by screws (21). The bottom of the connecting section (13) and the top right side of the copper busbar connector (12) are both fixedly connected with serrated mating surfaces (24) and serrated mating grooves (25). The copper busbar connector (12) and the serrated mating grooves (25) are equal in number and correspond to each other in position. The bottom of the connecting section (13) is fixedly connected with conductive protrusions (26). The top of the copper busbar connector (12) is provided with conductive grooves (27) whose positions correspond to the conductive protrusions (26).

2. The anti-loosening connector for a conductive copper busbar fixing structure according to claim 1, characterized in that: The conductive copper busbar (11) has a through groove (14) that runs through the upper and lower surfaces of the conductive copper busbar (11), and the through groove (14) extends along the length of the conductive copper busbar (11).

3. The anti-loosening connector for a conductive copper busbar fixing structure according to claim 1, characterized in that: The front side of the copper busbar connector (12) is fixedly connected to an integrally formed limiting member (16), which is L-shaped.

4. The anti-loosening connector for a conductive copper busbar fixing structure according to claim 3, characterized in that: The surface of the copper busbar connector (12) is covered with an insulating protective sleeve (15).

5. The anti-loosening connector for a conductive copper busbar fixing structure according to claim 1, characterized in that: A stepped structure is formed between the top surface of the connecting section (13) and the top surface of the conductive copper busbar (11) body, and the height difference of the step is equal to the thickness of the copper busbar connecting seat (12).

6. The anti-loosening connector for a conductive copper busbar fixing structure according to claim 1, characterized in that: The conductive copper busbar (11) and the copper busbar connector (12) are provided with at least two circular holes (17) on the opposite ends of each other.

Images