Connecting copper bar structure

Abstract

The invention discloses a connecting copper bar structure, the connecting copper bar structure comprises a first structure layer and a second structure layer, the first structure layer and the second structure layer are stacked, and the first structure layer comprises a first copper bar main body, a first connecting part and a first curved connecting part; the second structure layer comprises a second copper bar main body, a second connecting part and a second curved connecting part; the first copper bar main body comprises a first main body part and two first flexible connecting parts, and the two first flexible connecting parts are respectively arranged at two ends of the first main body part; the second copper bar main body comprises a second main body part and two second flexible connecting parts, and the two second flexible connecting parts are respectively arranged at two ends of the second main body part; the first flexible connecting part and the second flexible connecting part are both made of flexible copper foil. According to the connecting copper bar structure, multi-end connection is achieved through the first structure layer and the second structure layer which are arranged in a layered mode, the skin effect of current of the connecting copper bar structure can be effectively reduced, and the large-current transmission efficiency of the connecting copper bar structure is improved.

Description

Technical Field

[0001] The invention relates to the technical field of copper busbars, and in particular to a connecting copper busbar structure. Background Art

[0002] Copper busbar is a conductive element used for power transmission and distribution, usually made of copper material with high conductivity (such as red copper or oxygen-free copper). Due to its good conductivity, mechanical strength and corrosion resistance, it is widely used in electrical engineering and power equipment. Copper busbars usually have electrical properties such as high conductivity and low resistance, which can effectively reduce power loss. At the same time, copper busbars have high tensile strength and toughness, which are suitable for carrying large currents for a long time. During high current operation, copper busbars can effectively conduct heat and prevent overheating damage, so that they can cope with power transmission and distribution work under various working conditions. In terms of production technology, copper busbars are easy to cut, drill, bend and weld, and are suitable for a variety of design requirements. Common types of copper busbars include flat copper busbars, bent copper busbars, etc. Among them, flat copper busbars have a rectangular cross-section and are often used for connections inside busbars or electrical cabinets; while bent copper busbars are customized to meet complex wiring requirements.

[0003] Although existing copper busbars have the characteristics of high conductivity, high durability and easy processing, are suitable for high current scenarios, are not easily deformed after long-term use, and can be customized as needed, however, existing copper busbars are heavy and rigid, and are not suitable for use scenarios that require lightness and high flexibility. Summary of the invention

[0004] Based on this, it is necessary to provide a connecting copper busbar structure to address the technical problems of existing copper busbars being lightweight and lacking in flexibility of use.

[0005] A connecting copper busbar structure comprises a first structural layer and a second structural layer, the first structural layer and the second structural layer are stacked, wherein the first structural layer comprises a first copper busbar body, a first connecting portion and a first curved connecting portion, the first connecting portion and the first curved connecting portion are respectively arranged at two ends of the first copper busbar body; the second structural layer comprises a second copper busbar body, a second connecting portion and a second curved connecting portion, the second connecting portion and the second curved connecting portion are respectively arranged at two ends of the second copper busbar body.

[0006] The first copper busbar body includes a first main body portion and two first flexible connection portions, which are respectively arranged at the two ends of the first main body portion; one end of the first flexible connection portion facing away from the first main body portion is connected to the first connection portion; the other end of the first flexible connection portion facing away from the first main body portion is connected to the first curved connection portion; the second copper busbar body includes a second main body portion and two second flexible connection portions, which are respectively arranged at the two ends of the second main body portion; one end of the second flexible connection portion facing away from the second main body portion is connected to the second connection portion; the other end of the second flexible connection portion facing away from the second main body portion is connected to the second curved connection portion.

[0007] The first flexible connection part and the second flexible connection part are both made of flexible copper foil.

[0008] In one embodiment, the first structural layer and the second structural layer are both made of oxygen-free copper.

[0009] In one embodiment, the inner surfaces of the first structural layer and the second structural layer are both plated with a silver layer.

[0010] In one embodiment, the thickness of the silver plating layer is set to 3-10 μm.

[0011] In one embodiment, the first main body and the second main body are both provided with an aluminum core, and the aluminum core is disposed inside the first main body and inside the second main body.

[0012] In one embodiment, the surface of the silver plating layer is coated with a nickel plating layer.

[0013] In one embodiment, the thickness of the nickel plating layer is set to 5-20 μm.

[0014] In one embodiment, the surface of the nickel plating layer is coated with an insulating layer.

[0015] In one of the embodiments, the thickness of the insulating coating is set to 0.2-0.5 mm.

[0016] In one embodiment, the insulating layer is formed by coating with one of epoxy resin and thermoplastic polyurethane.

[0017] In one embodiment, the second structural layer is configured as two layers with the same structure, and the two second structural layers are stacked in a mirror-image manner.

[0018] In one embodiment, the first structural layer is configured as two layers with the same structure, and the two first structural layers are mirror-laminated and disposed on opposite sides of the two second structural layers.

[0019] In one embodiment, the copper busbar structure further comprises buckling portions, which are respectively and correspondingly disposed at the first connecting portion, the first curved connecting portion, the second connecting portion and the end of the second curved connecting portion.

[0020] The above-mentioned connecting copper busbar structure realizes multi-terminal connection and enhances the mechanical vibration resistance of the connecting copper busbar structure through the layered first structural layer and the second structural layer. In the actual application process, it can also effectively reduce the skin effect of the current of the connecting copper busbar structure and improve the large current transmission efficiency of the connecting copper busbar structure. The first copper busbar body includes a first main body and two first flexible connecting parts, so as to realize the flexible connection between the first structural layer and the external element; the second copper busbar body includes a second main body and two second flexible connecting parts, so as to realize the flexible connection between the second structural layer and the external element, and the first flexible connecting part and the second flexible connecting part are both made of flexible copper foil. Compared with the traditional copper busbar structure, the lightweight and use flexibility of the connecting copper busbar structure can be greatly improved by introducing a flexible structure into the first structural layer and the second structural layer, and at the same time, the influence of thermal expansion and vibration of the connecting copper busbar structure during use can be effectively alleviated. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the structure of a copper busbar connection structure in one embodiment; Figure 2 A schematic diagram of the structure of a copper busbar connection structure in one embodiment; Figure 3 for Figure 2 A schematic cross-sectional structure diagram of the AA portion in the illustrated embodiment; Figure 4 for Figure 3 A schematic diagram of the enlarged structure of the M portion in the illustrated embodiment. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0025] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0027] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0028] See also Figures 1 to 4The present invention discloses a connecting copper bar structure, which includes a first structure layer 100 and a second structure layer 200, which are stacked, wherein the first structure layer 100 includes a first copper bar body 110, a first connecting portion 120 and a first curved connecting portion 130, which are respectively arranged at two ends of the first copper bar body 110, so that the first copper bar body 110 can be electrically connected to an external element through the first connecting portion 120 and the first curved connecting portion 130; the second structure layer 200 includes a second copper bar body 210, a second connecting portion 220 and a second curved connecting portion 230, which are respectively arranged at two ends of the second copper bar body 210, so that the second copper bar body 210 can be electrically connected to an external element through the second connecting portion 220 and the second curved connecting portion 230. Based on this, the connecting copper bus structure of the present invention realizes multi-terminal connection and enhances the ability of the connecting copper bus structure to resist mechanical vibration through the layered first structural layer 100 and the second structural layer 200. In actual application, it can also effectively reduce the skin effect of the current of the connecting copper bus structure and improve the large current transmission efficiency of the connecting copper bus structure. Specifically, the first copper busbar body 110 includes a first main body 111 and two first flexible connection parts 112, and the two first flexible connection parts 112 are respectively arranged at both ends of the first main body 111; one end of the first flexible connection part 112 facing away from the first main body 111 is connected to the first connection part 120; one end of the other first flexible connection part 112 facing away from the first main body 111 is connected to the first curved connection part 130, thereby realizing a flexible connection between the first structural layer 100 and the external element; at the same time, the second copper busbar body 210 includes a second main body 211 and two second flexible connection parts 212, and the two second flexible connection parts 212 are respectively arranged at both ends of the second main body 211; one end of the second flexible connection part 212 facing away from the second main body 211 is connected to the second connection part 220; one end of the other second flexible connection part 212 facing away from the second main body 211 is connected to the second curved connection part 230, thereby realizing a flexible connection between the second structural layer 200 and the external element. More specifically, the first flexible connection part 112 and the second flexible connection part 212 are both made of flexible copper foil. Compared with the traditional copper busbar structure, the introduction of the flexible structure into the first structure layer 100 and the second structure layer 200 can greatly improve the lightweight and use flexibility of the copper busbar structure, and effectively alleviate the influence of thermal expansion and vibration of the copper busbar structure during use.

[0029] Furthermore, the first structural layer 100 and the second structural layer 200 are both made of oxygen-free copper, and the inner surfaces of the first structural layer 100 and the second structural layer 200 are plated with a silver plating layer 300. Compared with the conventional copper busbar structure, the first structural layer 100 and the second structural layer 200 made of oxygen-free copper have higher conductivity; in one embodiment, the thickness of the silver plating layer 300 is set to 3-10 μm, and the silver plating layer 300 can further reduce the contact resistance, so that the connection copper busbar structure of the present invention is suitable for high-frequency or precision equipment.

[0030] Furthermore, both the first main body portion 111 and the second main body portion 211 are provided with an aluminum core 400, and the aluminum core 400 is arranged inside the first main body portion 111 and the second main body portion 211, thereby effectively reducing the overall weight of the connecting copper busbar structure while retaining a high conductive performance. In actual production, setting the first main body portion 111 and the second main body portion 211 as a copper-clad aluminum structure can effectively reduce production costs, making the connecting copper busbar structure suitable for weight-sensitive application scenarios.

[0031] Furthermore, the surface of the silver plating layer 300 is coated with a nickel plating layer 500. In one embodiment, the thickness of the nickel plating layer 500 is set to 5-20μm. The nickel plating layer 500 can form a protective structure on the surface of the first structural layer 100 and the second structural layer 200 to prevent the surface oxidation of the copper material to extend the service life. At the same time, it can improve the surface weldability of the first structural layer 100 and the second structural layer 200 to ensure the connection reliability of the copper busbar structure.

[0032] Furthermore, the surface of the nickel plating layer 500 is coated with an insulating layer 600. In one embodiment, the thickness of the insulating coating is set to 0.2-0.5 mm. The insulating layer 600 can provide electrical insulation protection for the first structural layer 100 and the second structural layer 200 to prevent short circuits between the layers. Specifically, the insulating layer 600 is formed by coating with one of epoxy resin and thermoplastic polyurethane, so that the insulating layer 600 can also improve the high temperature resistance of the copper busbar structure to adapt to complex application environments.

[0033] Furthermore, the second structural layer 200 is set as two layers with the same structure, and the two second structural layers 200 are mirror-image stacked; correspondingly, the first structural layer 100 is set as two layers with the same structure, and the two first structural layers 100 are mirror-image stacked on the opposite sides of the two second structural layers 200, thereby forming a multi-layer copper busbar structure, and the adjacent layer structures are spaced by corresponding insulating layers 600 to ensure the insulation performance between the layers. Compared with the existing single-layer copper busbar structure, the connecting copper busbar structure of the present invention can further reduce the skin effect of the current through the multi-layer setting, while improving the high current transmission efficiency, thereby expanding the application range of the connecting copper busbar structure.

[0034] Furthermore, the connecting copper busbar structure also includes a snap-on portion 700, which is respectively arranged at the ends of the first connecting portion 120, the first curved connecting portion 130, the second connecting portion 220 and the second curved connecting portion 230, so that the first structural layer 100 and the second structural layer 200 can be quickly connected and fastened with external components and quickly disengaged through the snap-on portion 700, thereby greatly improving the use flexibility of the connecting copper busbar structure.

[0035] In summary, the connecting copper busbar structure disclosed by the present invention realizes multi-terminal connection and enhances the mechanical vibration resistance of the connecting copper busbar structure through the layered first structural layer and the second structural layer. At the same time, in the actual application process, it can also effectively reduce the skin effect of the current of the connecting copper busbar structure and improve the large current transmission efficiency of the connecting copper busbar structure. The first copper busbar body includes a first main body and two first flexible connecting parts, so as to realize the flexible connection between the first structural layer and the external element; the second copper busbar body includes a second main body and two second flexible connecting parts, so as to realize the flexible connection between the second structural layer and the external element, and the first flexible connecting part and the second flexible connecting part are both made of flexible copper foil. Compared with the traditional copper busbar structure, by introducing a flexible structure into the first structural layer and the second structural layer, the lightweight degree and flexibility of the connecting copper busbar structure can be greatly improved, and at the same time, the influence of thermal expansion and vibration of the connecting copper busbar structure during use can be effectively alleviated.

[0036] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0037] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A copper busbar connection structure, characterized in that: include: A first structural layer and a second structural layer, wherein the first structural layer and the second structural layer are stacked, wherein the first structural layer comprises a first copper bar main body, a first connecting portion and a first curved connecting portion, wherein the first connecting portion and the first curved connecting portion are respectively arranged at two ends of the first copper bar main body; the second structural layer comprises a second copper bar main body, a second connecting portion and a second curved connecting portion, wherein the second connecting portion and the second curved connecting portion are respectively arranged at two ends of the second copper bar main body; The first copper busbar body comprises a first main body portion and two first flexible connecting portions, and the two first flexible connecting portions are respectively arranged at two ends of the first main body portion; one end of the first flexible connecting portion facing away from the first main body portion is connected to the first connecting portion; the other end of the first flexible connecting portion facing away from the first main body portion is connected to the first curved connecting portion; the second copper busbar body comprises a second main body portion and two second flexible connecting portions, and the two second flexible connecting portions are respectively arranged at two ends of the second main body portion; one end of the second flexible connecting portion facing away from the second main body portion is connected to the second connecting portion; the other end of the second flexible connecting portion facing away from the second main body portion is connected to the second curved connecting portion; The first flexible connection portion and the second flexible connection portion are both made of flexible copper foil.

2. The copper busbar connection structure according to claim 1, characterized in that: The first structural layer and the second structural layer are both made of oxygen-free copper.

3. The copper busbar connection structure according to claim 2, characterized in that: The inner surfaces of the first structural layer and the second structural layer are both plated with a silver layer.

4. The copper busbar connection structure according to claim 3, characterized in that: The first main body and the second main body are both provided with an aluminum core, and the aluminum core is arranged inside the first main body and inside the second main body.

5. The copper busbar connection structure according to claim 4, characterized in that: The surface of the silver plated layer is coated with a nickel plated layer.

6. The copper busbar connection structure according to claim 5, characterized in that: The surface of the nickel plating layer is coated with an insulating layer.

7. The copper busbar connection structure according to claim 6, characterized in that: The insulating layer is formed by coating with one of epoxy resin and thermoplastic polyurethane.

8. The copper busbar connection structure according to claim 7, characterized in that: The second structural layer is configured as two layers with the same structure, and the two second structural layers are stacked in a mirror-image manner.

9. The copper busbar connection structure according to claim 8, characterized in that: The first structural layer is configured as two layers with the same structure, and the two first structural layers are mirror-laminated and configured on opposite sides of the two second structural layers.

10. The copper busbar connection structure according to claim 9, characterized in that: The connecting copper busbar structure further includes a buckling portion, and the buckling portion is respectively and correspondingly arranged at the first connecting portion, the first curved connecting portion, the second connecting portion, and the end portion of the second curved connecting portion.

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