An aluminum alloy electrically conductive busbar structure with high electrical conductivity and high yield strength

Abstract

The application provides an aluminum alloy conductive bus structure with high conductivity and high yield strength, comprising: a bus body in a hollow structure, comprising two first conductive parts arranged along a first direction and two second conductive parts arranged along a second direction; the cross section of the first conductive part is rectangular, the cross section of the second conductive part is wavy and comprises convex peak parts and concave valley parts, and the valley parts on both sides of the bus body are arranged in pairs; a reinforcing rib assembly comprising transverse reinforcing ribs and longitudinal reinforcing ribs, wherein each transverse reinforcing rib is connected with a pair of valley parts, and the longitudinal reinforcing ribs are arranged between adjacent valley parts and arranged in multiple along the extension direction of the bus body; and a heat dissipation assembly arranged outside the second conductive part, comprising multiple heat dissipation structures arranged in multiple along the extension direction of the bus body. The bus structure provided by the application can have high conductivity and high yield strength.

Description

Technical Field

[0001] This disclosure generally relates to the field of electrical equipment technology, and specifically to an aluminum alloy conductive busbar structure that combines high conductivity and high yield strength. Background Technology

[0002] Conductive busbars are key components for transmitting current in electrical equipment and are widely used in power systems, industrial power distribution and other fields. They need to simultaneously meet the requirements of good conductivity to ensure efficient current transmission and sufficient structural strength to withstand external forces during installation and use, and to avoid deformation affecting normal operation. Therefore, conductivity and yield strength are the core indicators for measuring the performance of conductive busbars.

[0003] In existing technologies, it is often difficult to balance high conductivity and high yield strength in conductive busbars: some busbars adopt solid or simple hollow structures to improve conductivity, but the structural strength is insufficient, the yield strength is low and they are prone to deformation; some increase the strength by thickening the material, but this increases the cost and may affect heat dissipation, causing the conductivity to decrease with temperature, making it difficult to meet the requirements of balancing both in practical applications. Utility Model Content

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide an aluminum alloy conductive busbar structure that combines high conductivity and high yield strength to solve the above problems.

[0005] This application provides an aluminum alloy conductive busbar structure that combines high conductivity and high yield strength, comprising: The busbar body has a hollow structure and includes two first conductive parts arranged along a first direction and two second conductive parts arranged along a second direction, with corresponding sides of the first and second conductive parts connected to each other; the cross-section of the first conductive parts is rectangular, and the cross-section of the second conductive parts is wavy, including convex crests and concave troughs, with the troughs on both sides of the busbar body arranged in pairs; the first and second directions are perpendicular to each other and both perpendicular to the extension direction of the busbar body; A reinforcing rib assembly includes transverse reinforcing ribs and longitudinal reinforcing ribs. Multiple transverse reinforcing ribs are provided, each transverse reinforcing rib connecting a pair of the wave troughs and extending along the extension direction of the busbar body. Multiple longitudinal reinforcing ribs are provided between two adjacent wave troughs and are arranged at intervals along the extension direction of the busbar body. A heat dissipation assembly is disposed on the outside of the second conductive part, and the heat dissipation assembly includes a plurality of heat dissipation structures arranged at intervals along the extension direction of the busbar.

[0006] According to the technical solution provided in the embodiments of this application, the cross section of the transverse stiffener is I-shaped, including two flanges and a web connecting the two flanges. The two flanges are respectively connected to the troughs on both sides. The web is provided with multiple hollow parts, and the flanges are provided with multiple through holes. The flanges of adjacent transverse stiffeners are connected to each other.

[0007] According to the technical solution provided in the embodiments of this application, the side of the trough that contacts the flange is set as a plane.

[0008] According to the technical solution provided in the embodiments of this application, the two ends of the busbar body are provided with connecting parts, and the connecting parts are used to connect external devices.

[0009] According to the technical solution provided in the embodiments of this application, the heat dissipation structure is disposed between adjacent wave crests and is disposed at the gap position corresponding to the gap between two adjacent longitudinal reinforcing ribs.

[0010] According to the technical solution provided in the embodiments of this application, the heat dissipation structure includes: An insulating heat-conducting plate, wherein the insulating heat-conducting plate is fixed to the outer wall of the second conductive part; A mesh heat sink, wherein the mesh heat sink is made of thermally conductive material and connected to the insulating heat-conducting plate.

[0011] According to the technical solution provided in the embodiments of this application, it also includes an insulating part, which is wrapped around the outer surface of the busbar body.

[0012] According to the technical solution provided in the embodiments of this application, the first conductive part is provided with a plurality of mounting holes, which are used for connecting external wiring terminals.

[0013] According to the technical solution provided in the embodiments of this application, the reinforcing rib assembly further includes an auxiliary support rib, one end of which is connected to the inner side of the first conductive part, and a through opening is provided corresponding to the mounting hole.

[0014] Compared with the prior art, the beneficial effects of this application are as follows: the main body of the busbar adopts a hollow structure, combined with a first conductive part with a rectangular cross section and a wave-shaped second conductive part with crests and troughs. While ensuring the conductive area to achieve high conductivity, the wave-shaped structure can improve the structural stability. The paired troughs are connected by transverse reinforcing ribs and the longitudinal reinforcing ribs are spaced apart, which greatly enhances the overall structural strength of the main body of the busbar, effectively improves the yield strength, and avoids deformation. The heat dissipation structure on the outside of the second conductive part is arranged at intervals along the extension direction of the busbar, which can dissipate the heat generated by the busbar during operation in a timely manner, further ensuring the stability of conductivity. The overall structure takes into account both high conductivity and high yield strength, and is highly practical. Attached Figure Description

[0015] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 A schematic diagram of an aluminum alloy conductive busbar structure that combines high conductivity and high yield strength, provided for this application. Figure 2 for Figure 1 A cross-sectional schematic diagram of the busbar structure shown. Figure 3 This is a schematic diagram of the transverse stiffener.

[0016] Reference numerals: 10, First conductive part; 11, Mounting hole; 20, Second conductive part; 21, Crest part; 22, Valley part; 30, Transverse reinforcing rib; 31, Flange; 32, Web plate; 33, Hollowed-out part; 34, Through hole; 40, Longitudinal reinforcing rib; 50, Heat dissipation structure; 51, Insulating heat-conducting plate; 52, Mesh heat dissipation frame; 60, Connecting part; 70, Auxiliary support rib; 71, Through opening. Detailed Implementation

[0017] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0018] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0019] Please refer to Figures 1-3 This application provides an aluminum alloy conductive busbar structure that combines high conductivity and high yield strength, comprising: The busbar body has a hollow structure and includes two first conductive parts 10 arranged along a first direction and two second conductive parts 20 arranged along a second direction. The corresponding sides of the first conductive parts 10 and the second conductive parts 20 are connected to each other. The cross-section of the first conductive part 10 is rectangular, and the cross-section of the second conductive part 20 is wavy and includes outwardly convex crests 21 and inwardly concave troughs 22. The troughs 22 on both sides of the busbar body are arranged in pairs. The first direction and the second direction are perpendicular to each other and both are perpendicular to the extension direction of the busbar body. A reinforcing rib assembly includes transverse reinforcing ribs 30 and longitudinal reinforcing ribs 40. Multiple transverse reinforcing ribs 30 are provided, each transverse reinforcing rib 30 is connected to a pair of trough portions 22 and extends along the extension direction of the busbar body; multiple longitudinal reinforcing ribs 40 are provided between two adjacent trough portions 22 and are arranged at intervals along the extension direction of the busbar body. A heat dissipation assembly is disposed on the outside of the second conductive part 20, and the heat dissipation assembly includes a plurality of heat dissipation structures 50 arranged at intervals along the extension direction of the busbar.

[0020] Specifically, the busbar body has a hollow structure, providing reasonable space for internal component installation and heat dissipation. The busbar body is composed of two first conductive parts 10 arranged along a first direction and two second conductive parts 20 arranged along a second direction. The corresponding sides of the first conductive parts 10 and the two adjacent second conductive parts 20 are connected to each other by welding or integral molding to form a complete closed hollow frame. Here, the first and second directions are perpendicular to each other and both are perpendicular to the extension direction of the busbar body, thus ensuring the stability and symmetry of the busbar body structure in the spatial dimension. In this embodiment, the first direction is... Figure 2 The top and bottom directions, the second direction is Figure 2 The left and right directions in the middle.

[0021] like Figure 2 As shown, the cross-section of the first conductive part 10 is a regular rectangle. The rectangular structure not only facilitates docking with external components, but also ensures a stable conductive path and sufficient conductive area during current transmission. The cross-section of the second conductive part 20 is designed to be wavy. The wavy structure specifically includes outwardly protruding crests 21 and inwardly recessed troughs 22. The troughs 22 on both sides of the busbar body are arranged in pairs. The paired troughs 22 can provide precise connection points for the subsequent installation of the reinforcing rib assembly.

[0022] Multiple transverse stiffeners 30 are provided, each of which is connected to a pair of troughs 22. The transverse stiffeners 30 extend in a long strip along the extension direction of the busbar body. Through their connection with the troughs 22, the transverse stiffeners 30 can effectively support the transverse structure of the busbar body and disperse the stress brought by the transverse external force. The longitudinal stiffeners 40 are set between two adjacent troughs 22. The longitudinal stiffeners 40 extend along the first direction and are arranged at intervals along the extension direction of the busbar body. The spaced longitudinal stiffeners 40 can strengthen the longitudinal structure of the busbar body and form a crisscross support system with the transverse stiffeners 30, further improving the overall deformation resistance and yield strength of the busbar body. The heat dissipation component is used to dissipate the heat generated by the busbar during operation in a timely manner to ensure stable conductivity. The heat dissipation component is located on the outside of the second conductive part 20 and includes multiple heat dissipation structures 50 arranged at intervals along the extension direction of the busbar. The spaced arrangement design can ensure that the heat dissipation structure 50 is in full contact with the outer wall of the second conductive part 20 to efficiently absorb heat, while avoiding the increase in the overall weight and cost of the busbar due to excessive density of the heat dissipation structure 50, thus achieving a balance between heat dissipation effect and structural lightweight.

[0023] Furthermore, the cross section of the transverse reinforcing rib 30 is I-shaped, including two flanges 31 and a web 32 connecting the two flanges 31. The two flanges 31 are respectively connected to the trough portions 22 on both sides. The web 32 is provided with multiple hollow portions 33, and the flanges 31 are provided with multiple through holes 34. The flanges 31 of adjacent transverse reinforcing ribs 30 are connected to each other.

[0024] Specifically, such as Figure 2 As shown, the cross-section of the web 32 is parallel to the second direction, and two flanges 31 are respectively located on both sides of the web 32 and perpendicular to the web 32. The two flanges 31 are respectively connected to the paired troughs 22 on both sides of the busbar body. The connection method can be welding or integral molding to ensure that the connection between the flanges 31 and the troughs 22 is firm and can stably transmit the supporting force. In addition, through the lateral extension characteristics of the flanges 31, the external force on the busbar body is evenly distributed to the lateral stiffeners 30, thereby enhancing the deformation resistance of the busbar body. By opening multiple hollow parts 33 on the web 32, the overall weight of the lateral stiffeners 30 can be effectively reduced without reducing the supporting strength of the web 32, achieving structural lightweighting. At the same time, it can also provide a channel for air circulation inside the busbar body, helping to improve the heat dissipation effect. The flanges 31 are provided with multiple through holes 34, which can exhaust the hot air between adjacent lateral stiffeners 30 to the space between the lateral stiffeners 30 and the second conductive part 20, thereby facilitating heat dissipation.

[0025] Furthermore, the side of the trough portion 22 that contacts the flange 31 is configured as a plane.

[0026] Specifically, to ensure a full and tight contact between the trough portion 22 and the flange 31, the side of the trough portion 22 that contacts the flange 31 is specially designed as a flat surface. This flat surface design avoids localized point or line contact when the original curved or irregular surface of the trough portion 22 contacts the flange 31, significantly increasing the contact area between the two.

[0027] Furthermore, the busbar body has connecting portions 60 at both ends, which are used to connect external devices.

[0028] Specifically, the connecting part 60 serves as a transition structure connecting the busbar body to external equipment (such as distribution cabinets, transformers, other conductive components, etc.). Its specific shape can be adapted to the interface structure of the external equipment to be connected. For example, it can be designed as a flat plate or a boss shape that matches the end profile of the busbar body. Simultaneously, the surface of the connecting part 60 will be smoothed to reduce contact gaps during connection and ensure a tight connection. In actual assembly, workers can use conventional methods such as bolt connections and welding to fix the connecting part 60 to the corresponding interface of the external equipment.

[0029] Furthermore, the heat dissipation structure 50 is disposed between adjacent wave crests 21 and is disposed at the gap position corresponding to the gap between two adjacent longitudinal reinforcing ribs 40.

[0030] Specifically, such as Figure 2 As shown, a relatively concave area is formed between adjacent wave crests 21. This area provides ample installation space for the heat dissipation structure 50 and allows it to be closer to the outer wall of the second conductive part 20, facilitating rapid absorption of the heat generated during operation. Simultaneously, a gap exists between adjacent longitudinal reinforcing ribs 40. This gap is not obstructed by the structure of the longitudinal reinforcing ribs 40, providing a clear path for heat dissipation and preventing the heat absorbed by the heat dissipation structure 50 from being blocked by the longitudinal reinforcing ribs 40. By placing the heat dissipation structure 50 between adjacent wave crests 21, corresponding to the gap between adjacent longitudinal reinforcing ribs 40, it ensures a stable fit between the heat dissipation structure 50 and the second conductive part 20 for efficient heat absorption, while also allowing for rapid heat dissipation through the gap between the longitudinal reinforcing ribs 40, maximizing heat dissipation efficiency and ensuring stable conductivity of the busbar body.

[0031] Furthermore, the heat dissipation structure 50 includes: An insulating heat-conducting plate 51 is fixed to the outer wall of the second conductive part 20. A mesh heat sink 52 is made of thermally conductive material and is connected to the insulating heat-conducting plate 51.

[0032] Specifically, the insulating heat-conducting plate 51 serves as the basic component connecting the heat dissipation structure 50 and the second conductive part 20, and is tightly fixed to the outer wall of the second conductive part 20 through methods such as bonding and bolting. Its insulating properties effectively prevent leakage risks between the heat dissipation structure 50 and the second conductive part 20, ensuring electrical safety during busbar operation; its excellent thermal conductivity allows for rapid absorption of the heat generated by the second conductive part 20 during operation. The mesh heat sink 52 is made of materials with excellent thermal conductivity, such as copper and aluminum, and is firmly connected to the side of the insulating heat-conducting plate 51 away from the second conductive part 20 through welding or snap-fit ​​connections. The mesh structure design significantly increases the contact area between the heat sink and the air. When the insulating heat-conducting plate 51 transfers heat to the mesh heat sink 52, the heat can quickly exchange with the surrounding air through the multiple sets of heat dissipation ribs of the mesh frame; it also supports the shape of the second conductive part 20 from the outside, forming a complementary support structure with the longitudinal reinforcing ribs 40.

[0033] Furthermore, it also includes an insulating portion that wraps around the outer surface of the busbar body.

[0034] Specifically, the insulation completely covers the outer surface of the busbar body, including the outer walls of the first conductive part 10 and the second conductive part 20, as well as the connection gaps of each component, to prevent current leakage and resist the influence of heat generated during busbar operation on insulation performance, ensuring that the insulation effect does not decrease during long-term use.

[0035] Furthermore, the first conductive part 10 is provided with a plurality of mounting holes 11, which are used for connecting external wiring terminals.

[0036] Specifically, the mounting hole 11 penetrates the first conductive part 10, and the multiple mounting holes 11 are evenly spaced on the first conductive part 10. The spacing can be adapted to the installation size of common terminals to ensure compatibility with external terminals of different specifications and improve the versatility of the busbar.

[0037] Furthermore, the reinforcing rib assembly also includes an auxiliary support rib 70, one end of which is connected to the inner side of the first conductive part 10, and a through opening 71 is provided corresponding to the mounting hole 11.

[0038] Specifically, the auxiliary support rib 70 has a T-shaped structure. One end of it is firmly connected to the inner wall of the first conductive part 10 by welding or integral molding. The connection position is precisely corresponding to the area where the mounting hole 11 is located, so that the auxiliary support rib 70 can directly provide support for the local area of ​​the first conductive part 10 whose strength is weakened after the mounting hole 11 is opened, and disperse the stress around the mounting hole 11 caused by the fixing of the terminal and current transmission. At the same time, a through hole 71 is opened on the auxiliary support rib 70 at the position corresponding to the mounting hole 11. The diameter of the through hole 71 matches the mounting hole 11, and the central axis is coincident with the central axis of the mounting hole 11. This will not prevent the terminal connecting bolt from passing through the mounting hole 11 for fixing, and the hole wall of the through hole 71 can play a certain limiting role for the bolt, further improving the stability of the terminal after installation.

[0039] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. An aluminum alloy conductive busbar structure possessing both high conductivity and high yield strength, characterized in that, include: The busbar body has a hollow structure and includes two first conductive parts (10) arranged along a first direction and two second conductive parts (20) arranged along a second direction. The corresponding sides of the first conductive parts (10) and the second conductive parts (20) are connected to each other. The cross-section of the first conductive part (10) is rectangular, and the cross-section of the second conductive part (20) is wavy and includes an outwardly convex crest part (21) and an inwardly concave trough part (22). The trough parts (22) on both sides of the busbar body are arranged in pairs. The first direction and the second direction are perpendicular to each other and both are perpendicular to the extension direction of the busbar body. The reinforcing rib assembly includes transverse reinforcing ribs (30) and longitudinal reinforcing ribs (40). The transverse reinforcing ribs (30) are provided in multiples, each of which connects to a pair of troughs (22) and extends along the extension direction of the busbar body. The longitudinal reinforcing ribs (40) are provided between two adjacent troughs (22) and are arranged in multiples at intervals along the extension direction of the busbar body. A heat dissipation assembly is disposed on the outside of the second conductive part (20), and the heat dissipation assembly includes a plurality of heat dissipation structures (50) arranged at intervals along the extension direction of the busbar.

2. The aluminum alloy conductive busbar structure with both high conductivity and high yield strength according to claim 1, characterized in that, The cross section of the transverse reinforcing rib (30) is I-shaped, including two flanges (31) and a web (32) connecting the two flanges (31). The two flanges (31) are respectively connected to the troughs (22) on both sides. The web (32) is provided with multiple hollow parts (33), and the flanges (31) are provided with multiple through holes (34). The flanges (31) of adjacent transverse reinforcing ribs (30) are connected to each other.

3. The aluminum alloy conductive busbar structure with both high conductivity and high yield strength according to claim 2, characterized in that, The side of the trough (22) that contacts the flange (31) is set as a plane.

4. The aluminum alloy conductive busbar structure with both high conductivity and high yield strength according to claim 3, characterized in that, The busbar body has connecting parts (60) at both ends, which are used to connect external devices.

5. The aluminum alloy conductive busbar structure with both high conductivity and high yield strength according to claim 4, characterized in that, The heat dissipation structure (50) is disposed between adjacent wave crests (21) and is disposed at the gap position between two adjacent longitudinal reinforcing ribs (40).

6. The aluminum alloy conductive busbar structure with both high conductivity and high yield strength according to claim 5, characterized in that, The heat dissipation structure (50) includes: An insulating heat-conducting plate (51) is fixed to the outer wall of the second conductive part (20); A mesh heat sink (52) is made of thermally conductive material and connected to the insulating heat-conducting plate (51).

7. The aluminum alloy conductive busbar structure with both high conductivity and high yield strength according to claim 6, characterized in that, It also includes an insulating part, which is wrapped around the outer surface of the busbar body.

8. The aluminum alloy conductive busbar structure with both high conductivity and high yield strength according to claim 7, characterized in that, The first conductive part (10) is provided with a plurality of mounting holes (11), which are used for connecting external wiring terminals.

9. The aluminum alloy conductive busbar structure with both high conductivity and high yield strength according to claim 8, characterized in that, The reinforcing rib assembly also includes an auxiliary support rib (70), one end of which is connected to the inner side of the first conductive part (10), and a through opening (71) is provided corresponding to the mounting hole (11).

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