Copper bar structure with flexible connection

Abstract

The utility model belongs to the technical field of copper bars, and particularly relates to a copper bar structure with flexible connection, which comprises a copper bar body and a connecting end, the copper bar body is formed by laminating at least two layers of copper foils, and the copper foils at the two ends of the copper bar body are fixedly connected to form a hard connecting part. Each layer of copper foil in the middle part of the copper bar body is not connected to form a soft connection part, the end part of the hard connection part is provided with a copper plate and a welding part for fixing the copper plate, and the copper plate is externally connected with a connection end, so that through the arrangement of the copper plate, the copper plate can be fixed on the hard connection part through laser welding; therefore, the area of the hard connection part of the soft copper bar is reduced, and the overall flexibility and the connection strength of the soft copper bar can be maintained at the same time.

Description

Technical Field

[0001] This utility model belongs to the field of copper busbar technology, specifically relating to a copper busbar structure with flexible connections. Background Technology

[0002] A copper busbar is a high-current conductive product used to connect two components to make them conductive. Connecting copper busbar is the name of the conductive material in power distribution equipment. It is made of flat copper (equivalent to an electric wire). In order to improve flexibility and facilitate installation, existing connecting copper busbars usually adopt flexible connection copper busbars, that is, soft copper busbars. Soft copper busbars are made of multiple layers of copper foil or multi-strand copper wire braided wire pressed / welded together, which has higher elasticity and strong impact resistance.

[0003] In existing technologies, the longer the length of the flexible copper busbar, the larger the area of ​​its hardened region. When the hardened region is too large, the flexibility of the flexible copper busbar decreases significantly, making it more brittle. This makes the flexible copper busbar prone to breakage during bending, twisting, and other operations during installation, reducing the product qualification rate. On the other hand, directly reducing the area of ​​the hardened region will lead to a decrease in the strength and current carrying capacity of the flexible copper busbar. Utility Model Content

[0004] In view of this, the present invention provides a copper busbar structure with flexible connection, the purpose of which is to improve the flexibility of the flexible copper busbar by reducing the hardened area of ​​the flexible copper busbar and adding a copper plate to replace the original hardened area, thereby improving the product qualification rate.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A copper busbar structure with flexible connections includes a copper busbar body and a connecting end. The copper busbar body is formed by stacking at least two layers of copper foil. The layers of copper foil at both ends of the copper busbar body are fixedly connected to form a rigid connection portion. The layers of copper foil in the middle part of the copper busbar body are not connected to form a flexible connection portion. The end of the rigid connection portion is provided with a copper plate and a welding portion for fixing the copper plate. The copper plate is externally connected to the connecting end.

[0007] As a preferred technical solution, the end of the connecting end facing the copper plate is provided with a slot, wherein the slot is adapted to the copper plate.

[0008] Furthermore, a connector is provided between the copper plate and the slot, wherein the connector includes a connecting post and a through hole, the through hole is opened on the copper plate, the middle part of the connecting post passes through the through hole, and the two ends of the connecting post are respectively connected to the inner walls on both sides of the slot.

[0009] Furthermore, the end of the connection terminal away from the copper plate is provided with a terminal block, and the terminal block is used to connect external wires. The terminal blocks at both ends of the copper busbar body are distributed in a mirror image with the flexible connection part as the reference plane.

[0010] Further, the insulating sleeve is wrapped on the flexible connecting part, wherein the insulating sleeve is a heat shrink tube.

[0011] Further, the surface of the insulating sleeve is provided with heat dissipation holes.

[0012] Further, the thickness of the copper foil is between 0.15mm and 0.3mm, and the copper bar body is formed by laminating 50 layers of the copper foils.

[0013] Further, the copper foil is made of T2Y2 material.

[0014] In conclusion, due to the adoption of the above technical solutions, the present application has the following advantages:

[0015] The copper plate is fixed on the hard connecting part by laser welding, and plays the role of replacing the hard connecting part, so that the flexible copper bar can maintain the flexibility and connection strength while reducing the area of the hard connecting part. BRIEF DESCRIPTION OF DRAWINGS

[0016] The present application will be described by examples and with reference to the accompanying drawings, in which:

[0017] Figure 1 is a structural schematic view of a copper bar structure with a flexible connecting part provided by the present application;

[0018] Figure 2 is a structural schematic view of a connecting end and a copper bar provided by the present application;

[0019] Figure 3 is a structural schematic view of a flexible connecting part and a hard connecting part provided by the present application;

[0020] Figure 4 is a connecting structural schematic view of a copper bar and a hard connecting part provided by the present application.

[0021] In the drawings, the reference signs are as follows: flexible connecting part-1; connecting end-2; connecting plate-3; hard connecting part-4; copper plate-5; clamping groove-6; welding part-7. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0023] Embodiment one: in the prior art, as the length of the soft copper bar increases, the proportion of the area of the hardened area also increases accordingly. When the hardened area is too large, the flexibility of the soft copper bar will be significantly reduced, becoming more fragile and hard. This change leads to the soft copper bar being prone to breaking during installation when bending or twisting, etc., thereby reducing the pass rate of the soft copper bar product.

[0024] Therefore, in order to solve the above problems and realize the function of reducing the hardened area and improving the flexibility of the soft copper bar, the utility model discloses a copper bar structure with a soft connection, which comprises a copper bar body and a connecting end 2. Figures 2-4 , specifically, the copper bar body is formed by laminating at least two layers of copper foil, the copper foils of each layer at both ends of the copper bar body are fixedly connected, forming a hard connection part 4, the copper foils of each layer at the middle part of the copper bar body are not connected, forming a soft connection part 1, wherein the end part of the hard connection part 4 is provided with a copper plate 5 and a welding part 7 for fixing the copper plate 5, and the copper plate 5 is connected with the connecting end 2.

[0025] In this embodiment, the user can weld the copper plate 5 at the end of the hard connection part 4 after reducing the area of the hard connection part 4, so that the copper plate 5 can have the function of the hard connection part 4, that is, connected with the connecting end 2, so that the copper plate 5 can replace the hard connection part 4, so that the soft copper bar can maintain its overall flexibility and connection strength while reducing the area of the hard connection part 4.

[0026] In a specific embodiment, the user can firmly weld the copper plate 5 at the end of the hard connection part 4 through the welding part 7, ensuring good electrical connection and mechanical strength between the copper plate 5 and the hard connection part 4.

[0027] It should be noted that the welding part 7 comprises solder, which is welded by means of silicon bronze laser welding, which has the advantages of energy concentration and small heat-affected zone, etc., and can theoretically achieve the effect of beautiful weld and few pores, in order to avoid and expect the deformation of the copper plate 5 and the soft copper bar during welding.

[0028] When welding the copper plate, the welding parameters should be controlled within a suitable range, such as the laser power can be set between 1000-2000 watts, and the welding speed is 20-50 millimeters per second, so as to ensure the welding quality of the copper plate 5 and the hard connection part 4.

[0029] In addition, in the soft connection part 1 of the copper bar body, since the copper foils are not fixedly connected between layers, when current passes through, the soft connection part 1 can provide a certain elasticity to absorb and disperse the stress caused by current fluctuation or external mechanical stress, thereby reducing damage to the overall structure of the copper bar. Thus, the soft copper bar is suitable for occasions requiring frequent bending or vibration, such as mobile devices or bendable electronic devices, and can effectively prolong the service life of the copper bar.

[0030] Meanwhile, the copper bar body is formed by laminating copper foils, which can increase the conductive cross-sectional area of the copper bar and thus improve its current carrying capacity.

[0031] In the embodiment, the copper foils are made of T2Y2 material, which has good electrical conductivity and thermal conductivity, high electrical conductivity, can ensure efficient transmission of current between copper foil layers, and reduce energy loss. At the same time, T2Y2 material has certain strength and corrosion resistance, and can maintain good performance in different working environments, such as humid and chemically corrosive gas environments, to ensure long-term stability of the copper bar structure. Moreover, the material has good plasticity, which facilitates lamination, welding and other operations during processing, and is conducive to forming a uniform and stable copper bar body structure, ensuring the performance of the soft connection part 1 and the hard connection part 4.

[0032] Example Two: Based on Example One, in order to improve the connection tightness of the copper plate 5 and the connecting end 2, referring to Figure 1 and Figure 2 The utility model also includes a clamping groove 6 for clamping the copper plate 5, and specifically, one end of the connecting end 2 towards the copper plate 5 is provided with the clamping groove 6, wherein the clamping groove 6 is matched with the copper plate 5.

[0033] In the embodiment, the matching of the clamping groove 6 and the copper plate 5 makes the connection between the copper plate 5 and the connecting end 2 more stable, and also improves the convenience of the butt joint of the copper plate 5 and the connecting end 2.

[0034] Further, in order to improve the flexibility of the connecting end 2 on the copper bar, a connecting piece is arranged between the copper plate 5 and the clamping groove 6, wherein the connecting piece includes a connecting column and a through hole, the through hole is arranged on the copper plate 5, the middle part of the connecting column passes through the through hole, and the two ends of the connecting column are respectively connected with the inner walls of the two sides of the clamping groove 6. Specifically, the connecting column is movably arranged in the through hole, so that the connecting end 2 can rotate around the connecting column on the copper plate 5, and the copper bar can adapt to different installation angles and positions. While enhancing the adaptability of the copper bar structure, its flexibility in practical application is also improved.

[0035] The arrangement of the connecting column can also withstand a certain tension and pressure, preventing the connecting end 2 from loosening or falling off during use, so that the connection between the copper plate 5 and the connecting end 2 can be more firm.

[0036] In the embodiment, the connecting end 2 is provided with a terminal board 3 away from one end of the copper plate 5, and the terminal board 3 is used for external connection of a wire, wherein the terminal boards 3 at both ends of the copper plate body are mirror-distributed with the soft connecting part 1 as a reference surface. Through the arrangement, when the copper plate is installed in some electrical equipment which needs to be bent or twisted, since the two terminal boards 3 are mirror-distributed with the soft connecting part 1 as a reference surface, it is helpful to keep the copper plate balanced in the process of wiring.

[0037] In the embodiment, the connecting end 2 is provided with a terminal board 3 away from one end of the copper plate 5, and the terminal board 3 is used for external connection of a wire, wherein the terminal boards 3 at both ends of the copper plate body are mirror-distributed with the soft connecting part 1 as a reference surface. Through the arrangement, when the copper plate is installed in some electrical equipment which needs to be bent or twisted, since the two terminal boards 3 are mirror-distributed with the soft connecting part 1 as a reference surface, it is helpful to keep the copper plate balanced in the process of wiring.

[0038] In the embodiment, the material of the heat shrink tube can be polyolefin or other material with good insulation performance and heat shrinkage performance. When selecting the heat shrink tube, the appropriate specification is determined according to the size of the soft connecting part, and the inner diameter of the heat shrink tube is slightly smaller than the outer diameter of the soft connecting part 1, generally 0.5-1.5 millimeters. In this way, the soft connecting part can be tightly wrapped after heating and shrinking, and good insulation protection can be provided.

[0039] Further, in order to prevent the soft connecting part 1 from overheating, the surface of the insulating sleeve is provided with heat dissipation holes for discharging heat inside the insulating sleeve.

[0040] In one embodiment, the shape of the heat dissipation hole can be circular or square. In addition, the size of the heat dissipation hole should not be too large, so as not to affect the overall insulation performance of the insulating sleeve. In actual application, the diameter of the heat dissipation hole is usually between 1-3 millimeters, so as to ensure that good heat dissipation effect can be provided while the integrity and durability of the insulating sleeve are maintained.

[0041] In one embodiment, appropriately increasing the thickness of the copper foil is conducive to heat dissipation. Specifically, the thickness of the copper foil is between 0.15mm and 0.3mm.

[0042] At the same time, in order to further improve the structural stability of the soft copper plate, the copper plate body is formed by laminating 50 layers of the copper foil.

[0043] In summary, in combination with the embodiments one to three, the working principle of the copper plate structure with a soft connecting part is as follows:

[0044] First, by adopting the way of setting copper plate 5 at the end of hard connection part 4 and fixed by welding part 7. The hard connection part 4 can be extended through the copper plate 5, so that the copper plate 5 can be regarded as the extension of the hard connection part 4 to replace part of the hard connection part 4. After the copper plate 5 replaces part of the hard connection part 4, it cooperates with the connecting end 2, so that the copper bar structure containing soft connection can effectively maintain the overall flexibility while reducing the area of the hard connection part 4.

[0045] Secondly, the mechanism of clamping groove 6 and connecting piece cooperates with copper plate 5 to realize the function of stable connection and flexibility. Specifically, because the clamping groove 6 of the connecting end 2 is matched with the copper plate 5, it provides a stable docking position for the copper plate 5 and the connecting end 2, which is convenient for the docking of the two. At the same time, the connecting column in the connecting piece penetrates the perforation of the copper plate 5 and connects with the inner wall of the clamping groove 6, so that the copper plate 5 and the connecting end 2 are connected, preventing loosening and falling off, and ensuring the stability of electrical connection. Moreover, the connecting column allows the connecting end 2 to rotate on the copper plate 5 with it as the center, which adapts to various installation requirements.

[0046] Finally, the soft connection part 1 is protected by the insulating sleeve and the heat dissipation hole. Specifically, the insulating sleeve wraps the soft connection part 1, and the heat shrink tube material is tightly attached to the soft connection part 1 after heating and shrinking, preventing the soft connection part 1 from contacting external objects and causing short circuit or corrosion, and ensuring electrical safety. The heat dissipation hole can timely discharge the heat generated by the work of the soft connection part 1, maintain the appropriate temperature, and ensure the stability of its performance.

[0047] Each embodiment in the specification is described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts between each embodiment can be referred to each other.

[0048] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application should not be limited to the embodiments shown herein, but should be consistent with the widest scope of principles and novel features disclosed herein.

Claims

1. A flexible copper bar structure comprising a copper bar body and a connection end (2), characterized in that, The copper bar body is formed by stacking at least two layers of copper foils, and each layer of the copper foils at both ends of the copper bar body is fixedly connected to form a hard connection part (4), and each layer of the copper foils in the middle part of the copper bar body is not connected to form a soft connection part (1); The end of the hard connection part (4) is provided with a copper plate (5) and a welding part (7) for fixing the copper plate (5), and the copper plate (5) is connected with the connecting end (2).

2. The flexible connection containing copper bar structure of claim 1, wherein, One end of the connecting end (2) towards the copper plate (5) is provided with a clamping groove (6), wherein the clamping groove (6) is matched with the copper plate (5).

3. The flexible connection containing copper bar structure of claim 2, wherein, A connecting piece is arranged between the copper plate (5) and the clamping groove (6), wherein the connecting piece comprises a connecting column and a through hole, the through hole is arranged on the copper plate (5), the middle part of the connecting column passes through the through hole, and the two ends of the connecting column are connected with the inner walls on both sides of the clamping groove (6), respectively.

4. The flexible connection containing copper bar structure of claim 1, wherein, The other end of the connecting end (2) away from the copper plate (5) is provided with a terminal plate (3), and the terminal plate (3) is used for connecting an external wire, wherein the terminal plates (3) at both ends of the copper bar body are mirror image distributed with the soft connection part (1) as a reference surface.

5. The flexible connection containing copper bar structure of claim 1, wherein, Further comprising an insulating sleeve, the insulating sleeve is wrapped on the soft connection part (1), wherein the insulating sleeve is a heat shrink tube.

6. The flexible connection containing copper bar structure of claim 5, wherein, The surface of the insulating sleeve is provided with a heat dissipation hole.

7. The flexible connection containing copper bar structure of claim 1, wherein, The thickness of the copper foil is between 0.15mm and 0.3mm, and the copper bar body is formed by stacking 50 layers of the copper foils.

8. The flexible connection containing copper bar structure of claim 1, wherein, The copper foil is made of T2Y2 material.

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