Self-positioning docking hollow lightweight efficient current-carrying copper bar structure

By designing a hollow, lightweight copper busbar structure, the problems of traditional copper busbars, such as large weight, poor heat dissipation, and complex installation, have been solved. This has resulted in lightweight copper busbars, improved heat dissipation efficiency, and convenient installation, thereby enhancing the safety and reliability of electrical systems.

CN224502405UActive Publication Date: 2026-07-14JIANGSU LANGHEZE ELECTRIC CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
JIANGSU LANGHEZE ELECTRIC CO LTD
Filing Date
2025-07-29
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

Traditional copper busbar structures are heavy, have limited current carrying capacity, poor heat dissipation, and are complex and inconvenient to install, making it difficult to meet the high performance and convenient installation requirements of modern electrical equipment.

Method used

Design a self-positioning and docking hollow lightweight copper busbar structure. The main body of the copper busbar is hollow in the middle section, with the same thickness on both sides. The ends are equipped with tenons and grooves to achieve automatic positioning and installation, reduce bolt fixing, optimize heat conduction path, and improve heat dissipation efficiency and current carrying capacity.

Benefits of technology

This achieves lightweight copper busbars, improves heat dissipation efficiency and current carrying capacity, simplifies the installation process, and ensures the safety and reliability of electrical systems.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to a hollow lightweight efficient current -carrying copper bar structure of self -positioning butt joint, including copper bar main part, the middle section of copper bar main part is provided with openwork, the sum of thickness of openwork both sides is same with the thickness of copper bar main part both ends, one end of copper bar main part is provided with tenon structure, the other end of copper bar main part is provided with the recess structure of being matched with tenon structure, when two copper bar main parts butt joint, tenon structure can accurately insert recess structure, make two copper bar main parts fixed, and under the interaction of tenon structure and recess structure two copper bar main parts will always keep the state of close adhesion, the utility model, optimize heat conduction path, expand the area of heat dissipation, and the heat dissipation efficiency is higher, under the condition of same thickness compared with traditional copper bar more conducive to heat dissipation, through the tenon structure and recess structure of setting up can automatic positioning installation, need not bolt fixed, simplify the installation process, improve the efficiency, and after connecting, the interaction of both, make two copper bar main parts close adhesion.
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Description

Technical Field

[0001] This utility model relates to the field of copper busbar technology, specifically a self-positioning and docking hollow lightweight high-efficiency current-carrying copper busbar structure. Background Technology

[0002] In the electrical field, copper busbars, as key conductive components, are widely used in various electrical systems such as complete power distribution systems and new energy vehicle battery pack connections, playing a vital role in transmitting current and connecting electrical equipment. However, traditional copper busbar structures have many shortcomings and cannot meet the demands of modern electrical equipment for high performance, lightweight design, and convenient installation.

[0003] First, traditional copper busbars are mostly solid structures, a design that limits their current-carrying capacity. With the increasing power of electrical equipment and the growing number of high-current applications, solid copper busbars struggle to handle large currents, making it difficult to ensure stable current transmission. Furthermore, solid copper busbars are heavier, increasing energy consumption and transportation costs. In addition, heat dissipation is a major weakness of traditional copper busbars. Current flowing through a copper busbar generates heat, and solid busbars have poor heat dissipation. Heat accumulation can cause the busbar temperature to rise, affecting its conductivity and lifespan, and potentially leading to safety hazards such as short circuits and fires.

[0004] Secondly, the existing installation methods for copper busbars are quite complex. They typically require bolts and other auxiliary components for fixing, and the positioning during connection is not precise enough, easily leading to installation deviations. This not only increases installation time and labor costs and reduces production efficiency, but may also cause poor contact between copper busbars, affecting the reliability of current transmission. Utility Model Content

[0005] The purpose of this invention is to provide a self-positioning and docking hollow lightweight high-efficiency current-carrying copper busbar structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A self-positioning and docking hollow lightweight high-efficiency current-carrying copper busbar structure includes a copper busbar body, the middle section of which is provided with a hollow, and the sum of the thicknesses on both sides of the hollow is the same as the thicknesses at both ends of the copper busbar body.

[0008] One end of the copper busbar body is provided with a tenon structure, and the other end of the copper busbar body is provided with a groove structure. The tenon structure and the groove structure are adapted to each other. When the two copper busbar bodies are connected, the tenon structure can be accurately inserted into the groove structure, thereby realizing the fixed connection of the two copper busbar bodies. Under the interaction of the tenon structure and the groove structure, the two copper busbar bodies will always maintain a tight fit.

[0009] As a further embodiment of this utility model:

[0010] The tenon structure includes a connecting block and a trapezoidal block, with the connecting block disposed at one end of the copper busbar body;

[0011] The connecting block has a first groove on one side, one end of the inclined surface of the trapezoidal block is located outside the first groove, and the other end of the trapezoidal block is located inside the first groove.

[0012] As a further improvement of this utility model:

[0013] The outer wall of the trapezoidal block is provided with a limiting plate, which is located in the first sliding groove and slides in cooperation with each other.

[0014] A first spring is installed inside the first slide groove. The two ends of the first spring abut against the limiting plate and the inner wall of the first slide groove, respectively, so that the trapezoidal block always has the tendency to move outward from the first slide groove.

[0015] As a further improvement of this utility model:

[0016] An equilateral triangular groove is provided on the other side of the connecting block, and the horizontal height of the equilateral triangular groove is greater than the horizontal height of the trapezoidal block.

[0017] As a further improvement of this utility model:

[0018] The groove structure includes a mating groove formed at the other end of the copper busbar body, the mating groove being adapted to the connecting block;

[0019] A right-angled triangular groove is provided on one side wall of the mating groove. The right-angled triangular groove is adapted to the trapezoidal block. When the connecting block is fully inserted into the mating groove, one end of the inclined surface of the trapezoidal block will be inserted into the right-angled triangular groove.

[0020] As a further improvement of this utility model:

[0021] The other end of the copper busbar body is provided with a disassembly hole, which is connected to the right-angled triangular groove.

[0022] As a further improvement of this utility model:

[0023] A second sliding groove is provided on the other side wall of the mating groove. A limiting ring is slidably arranged inside the second sliding groove. A pressing block is provided on the limiting ring. One end of the pressing block is located inside the mating groove and its cross-section is set as an equilateral triangle that matches the equilateral triangle groove.

[0024] The second slide groove is equipped with a second spring. The two ends of the second spring abut against the limiting ring and the inner wall of the second slide groove, respectively, so that the pressing block always has the tendency to move into the mating groove. The elastic force of the second spring is greater than that of the first spring.

[0025] When the connecting block is fully inserted into the mating groove, one end of the clamping block will be inserted into the equilateral triangular groove, and the clamping block will cooperate with the equilateral triangular groove so that the connecting block always has a tendency to move into the mating groove.

[0026] Compared with the prior art, the beneficial effects of this utility model are:

[0027] The copper busbar has a hollowed-out middle section, and the sum of the thicknesses on both sides of the middle section is the same as the thicknesses at both ends. This optimizes the heat conduction path, expands the heat dissipation area, and makes the heat dissipation more efficient. Under the same thickness conditions, it is more conducive to heat dissipation than traditional copper busbars.

[0028] The copper busbar has a tenon structure and a groove structure at both ends, which can be automatically positioned and installed without bolts, simplifying the installation process and improving efficiency. After connection, the two interact to make the two copper busbars fit tightly together, reducing contact resistance, improving current carrying capacity, avoiding poor contact, and ensuring the safe and efficient operation of the electrical system. Attached Figure Description

[0029] Figure 1 A schematic diagram of the overall structure of one embodiment of a hollow, lightweight, high-efficiency current-carrying copper busbar structure for self-positioning and docking.

[0030] Figure 2 This is a schematic diagram of two copper busbars installed in one embodiment of a hollow, lightweight, and high-efficiency current-carrying copper busbar structure for self-positioning and docking.

[0031] Figure 3 A cross-sectional view of two copper busbar bodies after installation in one embodiment of a self-positioning and docking hollow lightweight high-efficiency current-carrying copper busbar structure.

[0032] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0033] Figure 5A cross-sectional view of two copper busbar bodies after being separated in one embodiment of a self-positioning and docking hollow lightweight high-efficiency current-carrying copper busbar structure.

[0034] Figure 6 for Figure 5 Enlarged view of section B in the middle.

[0035] Figure 7 A schematic diagram comparing the self-positioning and docking hollow lightweight high-efficiency current-carrying copper busbar structure with existing copper busbar structures.

[0036] Figure 8 This is a front cross-sectional view of two copper busbars after installation in one embodiment of a self-positioning and docking hollow lightweight high-efficiency current-carrying copper busbar structure.

[0037] Figure 9 for Figure 8 Enlarged view of point C in the middle.

[0038] In the diagram: 1. Copper busbar body; 101. Hollowed-out; 2. Connecting block; 3. Trapezoidal block; 4. First slide groove; 5. Limiting plate; 6. Spring No. 1; 7. Equilateral triangular groove; 8. Mating groove; 9. Right-angled triangular groove; 10. Disassembly hole; 11. Second slide groove; 12. Limiting ring; 13. Pressing block; 14. Spring No. 2. Detailed Implementation

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0040] Furthermore, the elements in this invention are referred to as being "fixed to" or "set on" another element, which may be directly on the other element or may also include an intervening element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or may also include an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0041] Please see Figures 1-9 In this embodiment of the utility model, a self-positioning and docking hollow lightweight high-efficiency current-carrying copper busbar structure includes a copper busbar body 1, the middle section of which is provided with a hollow 101, and the sum of the thicknesses on both sides of the hollow 101 is the same as the thicknesses at both ends of the copper busbar body 1.

[0042] One end of the copper busbar body 1 is provided with a tenon structure, and the other end of the copper busbar body 1 is provided with a groove structure. The tenon structure and the groove structure are adapted to each other. When two copper busbar bodies 1 are connected, the tenon structure can be accurately inserted into the groove structure, thereby realizing the fixed connection of the two copper busbar bodies 1. Under the interaction of the tenon structure and the groove structure, the two copper busbar bodies 1 will always maintain a tight fit.

[0043] In this design, the hollow section 101 in the middle of the copper busbar body 1 is one of the key features. The sum of the thicknesses on both sides of the hollow section 101 is the same as the thicknesses at both ends of the copper busbar body 1. This design reduces the weight of the copper busbar while optimizing the heat conduction path. When current passes through the copper busbar, heat can be efficiently dissipated through the area around the hollow section 101, thereby improving heat dissipation efficiency, ensuring that the copper busbar maintains a low temperature during operation, and extending its service life.

[0044] One end of the copper busbar body 1 is provided with a tenon structure, and the other end is provided with a groove structure, with the tenon structure and the groove structure being compatible. During actual installation, when two copper busbar bodies 1 are joined together, the tenon structure and the groove structure cooperate to achieve a fixed connection of the copper busbar bodies 1. This self-positioning joining method eliminates the need for additional bolts or other fasteners, simplifying the installation process and improving installation efficiency.

[0045] Moreover, the interaction between the tenon and groove structures ensures that the two copper busbar bodies 1 remain in a tight fit after connection; the tight fit effectively reduces contact resistance, enabling more stable current transmission, avoiding problems such as arcing and overheating caused by poor contact, and improving the safety and reliability of the entire electrical system.

[0046] As a further embodiment of this utility model, the tenon structure includes a connecting block 2 and a trapezoidal block 3, wherein the connecting block 2 is disposed at one end of the copper busbar body 1;

[0047] The connecting block 2 has a first sliding groove 4 on one side, one end of the inclined surface of the trapezoidal block 3 is located outside the first sliding groove 4, and the other end of the trapezoidal block 3 is located inside the first sliding groove 4.

[0048] The outer wall of the trapezoidal block 3 is provided with a limiting plate 5, which is located in the first sliding groove 4 and slides in cooperation with each other.

[0049] A first spring 6 is provided inside the first slide groove 4. The two ends of the first spring 6 abut against the limiting plate 5 and the inner wall of the first slide groove 4, respectively, so that the trapezoidal block 3 always has the tendency to move outward from the first slide groove 4.

[0050] An equilateral triangular groove 7 is provided on the other side of the connecting block 2, and the horizontal height of the equilateral triangular groove 7 is greater than the horizontal height of the trapezoidal block 3.

[0051] In this embodiment, in the tenon structure at one end of the copper busbar body 1, the connecting block 2 serves as a basic support. It is fixed to one end of the copper busbar body 1, providing an installation base for subsequent components. On one side of the connecting block 2, a first sliding groove 4 is designed, which is a key sliding component in the entire tenon structure. One end of the inclined surface of the trapezoidal block 3 is located outside the first sliding groove 4, while the other end extends into the first sliding groove 4, forming a partially embedded connection.

[0052] A limiting plate 5 is fixed to the outer wall of the trapezoidal block 3. The limiting plate 5 is located inside the first slide groove 4 and slides with the first slide groove 4. This sliding engagement allows the trapezoidal block 3 to move within a certain range, thus providing flexibility to the entire structure.

[0053] A spring 6 is also provided inside the first slide groove 4. Its two ends abut against the limiting plate 5 and the inner wall of the first slide groove 4 respectively, so that the trapezoidal block 3 is always subjected to a force that moves outward from the first slide groove 4, thereby ensuring that the trapezoidal block 3 tends to extend outward in the free state.

[0054] On the other side of the connecting block 2, an equilateral triangular groove 7 is provided. The horizontal height of this groove is greater than the horizontal height of the trapezoidal block 3. The equilateral triangular groove 7 cooperates with the clamping block 13, so that the connecting block 2 always has the tendency to move into the mating groove 8.

[0055] As a further embodiment of this utility model, the groove structure includes a mating groove 8 formed at the other end of the copper busbar body 1, the mating groove 8 being adapted to the connecting block 2;

[0056] A right-angled triangular groove 9 is provided on one side wall of the mating groove 8. The right-angled triangular groove 9 is adapted to the trapezoidal block 3. When the connecting block 2 is fully inserted into the mating groove 8, one end of the inclined surface of the trapezoidal block 3 will be inserted into the right-angled triangular groove 9.

[0057] The other end of the copper busbar body 1 is provided with a disassembly hole 10, which is connected to the right-angled triangular groove 9;

[0058] A second sliding groove 11 is provided on the other side wall of the mating groove 8. A limiting ring 12 is slidably arranged inside the second sliding groove 11. A pressing block 13 is provided on the limiting ring 12. One end of the pressing block 13 is located inside the mating groove 8 and its cross-section is set as an equilateral triangle that matches the equilateral triangle groove 7.

[0059] The second slide groove 11 is provided with a second spring 14. The two ends of the second spring 14 abut against the limiting ring 12 and the inner wall of the second slide groove 11, respectively, so that the pressing block 13 always has the tendency to move into the mating groove 8. The elastic force of the second spring 14 is greater than that of the first spring 6.

[0060] When the connecting block 2 is fully inserted into the mating groove 8, one end of the clamping block 13 will be inserted into the equilateral triangular groove 7, and the clamping block 13 will cooperate with the equilateral triangular groove 7 so that the connecting block 2 always has a tendency to move into the mating groove 8.

[0061] In this embodiment, in the groove structure of the copper busbar body 1, the mating groove 8 is opened at the other end of the copper busbar body 1 and is adapted to the connecting block 2 in the tenon structure; when the connecting block 2 is inserted into the mating groove 8, the right-angled triangular groove 9 on one side wall of the mating groove 8 is adapted to the trapezoidal block 3. After the connecting block 2 is fully inserted, one end of the inclined surface of the trapezoidal block 3 is inserted into the right-angled triangular groove 9, and the connecting block 2 is initially positioned.

[0062] The disassembly hole 10 at the other end of the copper busbar body 1 is connected to the right-angled triangular groove 9 for easy disassembly. In the second sliding groove 11 on the other side wall of the mating groove 8, the limiting ring 12 is slidably set, and one end of the pressing block 13 on it is located in the mating groove 8, and the cross section is an equilateral triangle, which is compatible with the equilateral triangular groove 7. The second spring 14 is located in the second sliding groove 11, and its two ends abut against the limiting ring 12 and the inner wall of the sliding groove, respectively. Its elastic force is greater than that of the first spring 6, so that the pressing block 13 always tends to move into the mating groove 8.

[0063] When the connecting block 2 is fully inserted into the mating groove 8, one end of the clamping block 13 is inserted into the equilateral triangular groove 7, which cooperates with it to further push the connecting block 2 into the mating groove 8, enhancing the tightness of the connection. At the same time, the trapezoidal block 3 extends outward under the action of the first spring 6 and inserts into the right-angled triangular groove 9, working together with the clamping block 13 to ensure a tight fit and stable connection between the copper busbar bodies 1, ensuring the stability and reliability of current transmission, and giving the connected copper busbar bodies 1 good electrical performance and mechanical strength.

[0064] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0065] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A self-positioning and docking hollow lightweight high-efficiency current-carrying copper busbar structure, characterized in that, The copper busbar body (1) includes a hollow section (101) in the middle section of the copper busbar body (1), and the sum of the thicknesses on both sides of the hollow section (101) is the same as the thicknesses at both ends of the copper busbar body (1). One end of the copper busbar body (1) is provided with a tenon structure, and the other end of the copper busbar body (1) is provided with a groove structure. The tenon structure and the groove structure are adapted to each other. When the two copper busbar bodies (1) are connected, the tenon structure can be accurately inserted into the groove structure, thereby realizing the fixed connection of the two copper busbar bodies (1). Under the interaction of the tenon structure and the groove structure, the two copper busbar bodies (1) will always maintain a tight fit.

2. The self-positioning and docking hollow lightweight high-efficiency current-carrying copper busbar structure according to claim 1, characterized in that, The tenon structure includes a connecting block (2) and a trapezoidal block (3), wherein the connecting block (2) is disposed at one end of the copper busbar body (1); The connecting block (2) has a first groove (4) on one side, one end of the inclined surface of the trapezoidal block (3) is located outside the first groove (4), and the other end of the trapezoidal block (3) is located inside the first groove (4).

3. The self-positioning and docking hollow lightweight high-efficiency current-carrying copper busbar structure according to claim 2, characterized in that, The outer wall of the trapezoidal block (3) is provided with a limiting plate (5), which is located in the first sliding groove (4) and slides in cooperation with each other; A first spring (6) is provided inside the first slide groove (4). The two ends of the first spring (6) abut against the limiting plate (5) and the inner wall of the first slide groove (4) respectively, so that the trapezoidal block (3) always has the tendency to move outward from the first slide groove (4).

4. The self-positioning and docking hollow lightweight high-efficiency current-carrying copper busbar structure according to claim 3, characterized in that, An equilateral triangular groove (7) is provided on the other side of the connecting block (2), and the horizontal height of the equilateral triangular groove (7) is greater than the horizontal height of the trapezoidal block (3).

5. The self-positioning and docking hollow lightweight high-efficiency current-carrying copper busbar structure according to claim 4, characterized in that, The groove structure includes a mating groove (8) formed at the other end of the copper busbar body (1), and the mating groove (8) is adapted to the connecting block (2); A right-angled triangular groove (9) is provided on one side wall of the mating groove (8). The right-angled triangular groove (9) is adapted to the trapezoidal block (3). When the connecting block (2) is fully inserted into the mating groove (8), one end of the inclined surface of the trapezoidal block (3) will be inserted into the right-angled triangular groove (9).

6. The self-positioning and docking hollow lightweight high-efficiency current-carrying copper busbar structure according to claim 5, characterized in that, The other end of the copper busbar body (1) is provided with a disassembly hole (10), which is connected to the right-angled triangular groove (9).

7. The self-positioning and docking hollow lightweight high-efficiency current-carrying copper busbar structure according to claim 5, characterized in that, A second sliding groove (11) is provided on the other side wall of the mating groove (8). A limiting ring (12) is slidably provided inside the second sliding groove (11). A pressing block (13) is provided on the limiting ring (12). One end of the pressing block (13) is located inside the mating groove (8) and its cross-section is set as an equilateral triangle that matches the equilateral triangle groove (7). The second slide groove (11) is provided with a second spring (14), the two ends of the second spring (14) abut against the limiting ring (12) and the inner wall of the second slide groove (11) respectively, so that the pressing block (13) always has the tendency to move into the mating groove (8), wherein the elastic force of the second spring (14) is greater than the elastic force of the first spring (6); When the connecting block (2) is fully inserted into the mating groove (8), one end of the clamping block (13) will be inserted into the equilateral triangular groove (7), and the clamping block (13) will cooperate with the equilateral triangular groove (7) so that the connecting block (2) always has a tendency to move into the mating groove (8).