A high-efficiency heat-dissipation dense bus duct
By setting up a heat dissipation structure in the dense busbar trunking, especially the vertical heat dissipation part that extends deep into the busbar structure, the problem of insufficient heat dissipation in the busbar trunking is solved, achieving efficient heat dissipation and structural stability, reducing costs, and making it suitable for power transmission equipment in high-load scenarios.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- EATON BUSWAY (JIANGSU) CO LTD
- Filing Date
- 2025-07-25
- Publication Date
- 2026-08-04
AI Technical Summary
Insufficient heat dissipation capacity of dense busbar trunking during use, especially the heat of the conductors in the center of the trunking is difficult to dissipate effectively, resulting in excessively high busbar operating temperature, affecting service life and power transmission efficiency, and even posing a fire risk.
A high-efficiency heat dissipation dense busbar trunking was designed. By setting a heat dissipation structure between the first and second outer shells inside the housing, including the first and second vertical heat dissipation parts extending into the middle area of the busbar structure, and combining the horizontal heat dissipation parts with the outer shell to transfer heat to the outside, the limitation of slow heat diffusion in traditional conductors is broken, and rapid heat dissipation is achieved.
It significantly improves the heat dissipation efficiency of busbar trunking, reduces heat accumulation between busbars, reduces material costs, improves structural stability and deformation resistance, and ensures reliable operation of busbar trunking under high load scenarios, meeting the needs of miniaturized and high-efficiency power transmission equipment.
Smart Images
Figure CN224596111U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of power transmission, and in particular relates to a high-efficiency heat dissipation dense busbar trunking. Background Technology
[0002] With the rapid development of modern buildings and industrial facilities, electricity demand continues to rise, placing higher demands on efficient and reliable power transmission systems. Busbar trunking, as an important power transmission device, has emerged and is widely used. Busbar trunking is typically made of metals with excellent conductivity, such as copper or aluminum, and encapsulated in a closed metal device. Its main function is to distribute large amounts of power to distributed power system components. In indoor low-voltage power transmission trunk line projects, busbar trunking is gradually replacing traditional wires and cables due to its many advantages. These advantages are mainly reflected in: a series of supporting products, enabling commercial production; a small size and large capacity, meeting the power transmission needs of different scenarios; a shorter design and construction cycle, effectively accelerating project progress; convenient and quick installation and disassembly, facilitating later maintenance and adjustment; non-flammable, ensuring high safety and reliability; and a long service life, reducing long-term operating costs.
[0003] Among the many types of busbar trunking, conventional compact busbar trunking is the most common. It generally consists of a shell, busbars, polyester film, rivets, and other components. The surface of the busbars is covered with polyester film for insulation. The busbar conductors are arranged closely in a specific order and assembled within the busbar trunking shell, while the busbars are located inside the outer shell. However, poor heat dissipation is one of the main problems faced by this type of busbar trunking. During busbar operation, heat is generated when current flows through the conductors. Due to the close arrangement of the conductors, heat accumulates significantly. Especially for conductors with multi-layered structures, the heat generated by the conductors at the inner center is difficult to dissipate to the external environment effectively. This not only leads to excessively high busbar operating temperatures, severely reducing the busbar's operating conditions and affecting its normal performance and service life, but also necessitates increasing the conductor's heat dissipation perimeter to enhance heat dissipation. However, this undoubtedly increases the overall cost of the busbar significantly, and even then, the actual operating conditions are still difficult to achieve ideal results. For example, in the power systems of some large data centers or high-rise buildings, due to the large power load, the heat generated by the busbar trunking cannot be dissipated in time, causing the busbar trunking temperature to rise continuously. This not only reduces the power transmission efficiency but also increases the risk of equipment failure and may even cause safety accidents such as fires. Utility Model Content
[0004] The purpose of this invention is to provide a high-efficiency heat dissipation compact busbar trunking to solve the technical problem of high-efficiency heat dissipation during the use of compact busbar trunking.
[0005] To achieve the above objectives, the specific technical solution of this utility model for a high-efficiency heat dissipation compact busbar trunking is as follows: A high-efficiency heat dissipation compact busbar trunking includes a housing and a busbar structure disposed within the housing; The housing includes a first outer shell and a second outer shell disposed on both sides of the busbar structure, and a heat dissipation structure connecting the first outer shell and the second outer shell; The heat dissipation structure includes a first heat dissipation structure and a second heat dissipation structure; the first heat dissipation structure includes a first horizontal heat dissipation section and a first vertical heat dissipation section extending from the first horizontal heat dissipation section to the second heat dissipation structure; the second heat dissipation structure includes a second horizontal heat dissipation section and a second vertical heat dissipation section extending from the second horizontal heat dissipation section to the first heat dissipation structure. A storage space with openings at both ends is formed between the first outer shell and the second outer shell for placing the busbar structure. The first horizontal heat dissipation part connects the first outer shell and the second outer shell and closes one end opening of the storage space. The first vertical heat dissipation part enters the storage space. The second horizontal heat dissipation part connects the first outer shell and the second outer shell and closes the other end opening of the storage space. The second vertical heat dissipation part enters the storage space.
[0006] As a further improvement of this utility model, the first outer shell includes a first connecting portion, and a first upper extension portion and a first lower extension portion that bend and extend to one side at both ends of the first connecting portion; the second outer shell includes a second connecting portion, and a second upper extension portion and a second lower extension portion that bend and extend to one side at both ends of the second connecting portion; the first connecting portion, the second connecting portion, the first horizontal heat dissipation portion, and the second horizontal heat dissipation portion together form the storage space; the first vertical heat dissipation portion and the second vertical heat dissipation portion are arranged coaxially within the storage space; the first upper extension portion and the first lower extension portion, and the second upper extension portion and the second lower extension portion extend outward relative to the storage space.
[0007] As a further improvement of this utility model, the first upper extension and the second upper extension are bent upward at their two ends relative to the outer side of the storage space and connected to an upper protective net, and the first lower extension and the second lower extension are bent downward at their two ends relative to the outer side of the storage space and connected to a lower protective net.
[0008] As a further improvement of this utility model, the first outer shell and the second outer shell are symmetrically arranged with respect to the first vertical heat dissipation part and the second vertical heat dissipation part, and the first connecting part, the first upper extension part, the first lower extension part are symmetrically arranged with the second connecting part, the second upper extension part, and the second lower extension part, respectively.
[0009] As a further improvement of this utility model, the busbar structure includes a plurality of busbar conductors, which are evenly spaced on both sides of the first vertical heat dissipation part and the second vertical heat dissipation part within the storage space.
[0010] As a further improvement of this utility model, the busbar structure includes an L1 phase busbar, an L2 phase busbar, an L3 phase busbar and an N phase busbar arranged sequentially in the storage space; the first vertical heat dissipation part and the second vertical heat dissipation part are arranged between the L2 phase busbar and the L3 phase busbar.
[0011] As a further improvement of this utility model, the outer surface of the busbar structure is wrapped with a polyester film.
[0012] As a further improvement of this utility model, the first connecting part and the second connecting part are provided with raised heat dissipation teeth on the outer surface of the storage space.
[0013] As a further improvement of this utility model, the first horizontal heat dissipation part, the second horizontal heat dissipation part, the first upper extension part, the first lower extension part, the second upper extension part, and the second lower extension part are arranged in parallel; the first horizontal heat dissipation part extends to both sides relative to the upper opening of the storage space and connects with the upper end surfaces of the first upper extension part and the second upper extension part, and the second horizontal heat dissipation part extends to both sides relative to the lower opening of the storage space and connects with the lower end surfaces of the first lower extension part and the second lower extension part.
[0014] As a further improvement of this utility model, the first shell and the second shell are both integrally formed of metal. Beneficial effects
[0015] By incorporating a heat dissipation structure that connects the first and second outer shells through the busbar structure, and by extending the first and second vertical heat dissipation sections into the storage space, direct contact between the heat dissipation components and the busbar structure is achieved. This design overcomes the limitation of traditional dense busbar trunking where conductor heat can only slowly diffuse through the surface. In particular, the first and second vertical heat dissipation sections, extending deep into the storage space containing the busbar structure, can quickly absorb the heat generated during busbar operation. This heat is then transferred to the first and second outer shells via the first and second horizontal heat dissipation sections, and finally dissipated into the external environment. Compared to the problem of heat dissipation difficulties in the internal central conductor in existing technologies, this structure significantly reduces heat accumulation between busbars, improves overall heat dissipation efficiency, avoids a decline in busbar operating conditions due to overheating, and reduces the cost of increasing the conductor heat dissipation perimeter to meet heat dissipation standards. The first and second outer shells form a storage space with openings at both ends for housing the busbar structure. The first and second horizontal heat dissipation sections respectively close the openings at both ends of the storage space, stably confining the busbar structure within the enclosed space and reducing interference from external factors. Simultaneously, the heat dissipation structure connects the first and second outer shells, further strengthening the overall connection strength of the housing, improving the busbar trunking's resistance to deformation and structural stability, and ensuring reliable operation under long-term use and complex environments. The integration of the heat dissipation structure with the casing achieves efficient heat dissipation without excessively increasing the overall volume of the busbar trunking. The first and second horizontal heat dissipation sections, while enclosing the storage space openings, serve as part of the heat dissipation path, making full use of space resources. This allows the busbar trunking to maintain a compact structure while possessing superior heat dissipation performance, meeting the demands of modern buildings and industries for miniaturized and efficient power transmission equipment. The first and second horizontal heat dissipation sections are connected to the first and second housings respectively, and can directly serve as the PE phase busbar, realizing the functional integration of heat dissipation components and protective conductors. This design eliminates the need for an additional independent PE phase busbar, reduces the number of components inside the busbar trunking, simplifies the structural layout, reduces material costs and manufacturing assembly difficulty, saves internal space, makes the busbar trunking structure more compact, and further enhances its practicality and economy in actual applications. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of a high-efficiency heat dissipation dense busbar trunking structure according to the present invention; Explanation of markings in the diagram: 11. First outer shell; 111. First connecting part; 112. First upper extension; 113. First lower extension; 12. Second outer shell; 121. Second connecting part; 122. Second upper extension; 123. Second lower extension; 131. First heat dissipation structure; 1311. First horizontal heat dissipation part; 1312. First vertical heat dissipation part; 132. Second heat dissipation structure; 1321. Second horizontal heat dissipation part; 1322. Second vertical heat dissipation part; 14. Storage space; 21. L1 phase busbar; 22. L2 phase busbar; 23. L3 phase busbar; 24. N phase busbar; 3. Upper protective net; 4. Lower protective net. Detailed Implementation
[0017] To enhance understanding of this utility model, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. These embodiments are only used to explain the present utility model and do not constitute a limitation on the scope of protection of the present utility model.
[0018] Implementation example: like Figure 1The diagram illustrates a high-efficiency heat dissipation compact busbar trunking. The busbar structure is enclosed within a housing, and the busbar conductors are placed along the busbar trunking's laying direction. In this embodiment, the busbar conductors are sequentially placed L1-phase busbar 21, L2-phase busbar 22, L3-phase busbar 23, and N-phase busbar 24. The heat dissipation structure passes between L2-phase busbar 22 and L3-phase busbar 23. The evenly spaced busbar conductors have gaps between them, facilitating airflow and heat dissipation. Placing the heat dissipation structure between the phase busbars allows for more efficient absorption of heat generated by each phase busbar, further enhancing the heat dissipation effect. The outer surface of the busbar conductors is wrapped with a polyester film. The polyester film has excellent insulation properties, ensuring insulation between the busbar conductors, preventing short circuits and other faults, and ensuring the safe operation of the busbar trunking.
[0019] The housing includes a first housing 11 and a second housing 12 symmetrically arranged on both sides, and a heat dissipation structure between the two housings. The first housing 11 and the second housing 12 are integrally formed from aluminum alloy, ensuring the stability of the connections between the various parts of the housing, reducing gaps and loosening caused by component splicing, thereby enhancing the overall structural strength of the housing, improving its resistance to deformation, maintaining a stable shape in long-term use and complex installation environments, and reducing the probability of failure. The first housing 11 includes a vertically arranged first connecting portion 111, and a first upper extension portion 112 and a first lower extension portion 113 extending vertically outward from the upper and lower ends of the first connecting portion 111. The outer side of the first connecting portion 112 is provided with protruding heat dissipation teeth. These teeth increase the contact area between the housing and the external air. When heat is transferred to the housing, the heat dissipation teeth can accelerate the dissipation of heat to the surrounding environment, helping to improve the overall heat dissipation effect. The second housing 12 is provided with a second connecting portion 121, a second upper extension portion 122, and a second lower extension portion 123 corresponding to the first housing 11. The outer ends of the first upper extension 122 and the second upper extension 123 are bent upwards and connected to an upper protective net, while the outer ends of the first lower extension 113 and the second lower extension 123 are bent downwards and connected to a lower protective net. The protective nets prevent maintenance personnel from accidentally contacting the live parts of the busbar trunking, improving the safety of the busbar trunking. They also effectively prevent dust and debris from entering the housing, avoiding these impurities from adhering to the busbar structure or heat dissipation structure and affecting its performance.
[0020] The heat dissipation structure includes two symmetrically arranged first heat dissipation structures 131 and second heat dissipation structures 132. The first horizontal heat dissipation section 1311 is riveted at both ends to the upper surfaces of the first upper extension 112 and the second upper extension 122. The second horizontal heat dissipation section 1321 is riveted at both ends to the lower surfaces of the first lower extension 113 and the second lower extension 123. The heat dissipation structure is tightly integrated with the outer shell, forming a complete unit, which facilitates the rapid transfer of heat from the heat dissipation structure to the outer shell, and then dissipation from the outer shell to the external environment. The first horizontal heat dissipation section 1311, the second horizontal heat dissipation section 1321, the first connecting section 111, and the second connecting section 121 together form a storage space 14, giving the storage space 14 good sealing performance. This provides a relatively stable environment for the busbar structure and reduces the impact of external environmental changes on the busbar structure.
[0021] The first vertical heat dissipation section 1312 and the second vertical heat dissipation section 1322 are collinearly positioned within the storage space, with their ends close together and extending into the central area of the busbar structure. Addressing the problem of heat dissipation difficulties in the conductors at the center of the internal structure in existing technologies, they directly absorb heat from the central area and then transfer it out through the first horizontal heat dissipation section 1311 and the second horizontal heat dissipation section 1321. This significantly improves heat dissipation efficiency, prevents heat accumulation inside the busbar structure, ensures the normal operating temperature of the busbar trunking, and enhances its performance and service life. The first vertical heat dissipation section 1312 and the second vertical heat dissipation section 1322 can also function as the PE phase busbar. This design integrates heat dissipation and PE phase busbar functions, eliminating the need for a separate dedicated PE phase busbar. This reduces the number of components inside the busbar trunking, simplifies the structural layout, lowers material costs and assembly difficulty, and saves internal space, making the busbar trunking structure more compact. When installing the heat dissipation structure, insert the first vertical heat dissipation part 1312 and the second vertical heat dissipation part 1322 into the storage space 14 from the top and bottom ends, and then rivet the first horizontal heat dissipation part 1311 and the second horizontal heat dissipation part 1321 to the top and bottom ends of the first housing 11 and the second housing 12. The installation is simple and convenient.
[0022] In summary, existing high-density busbar trunking suffers from poor heat dissipation due to the tightly packed conductors and multi-layered structure, making it difficult for heat to dissipate from the central conductor. To meet standards, the conductor perimeter needs to be increased, leading to high costs and poor operating conditions. This application, however, addresses this by incorporating two vertically aligned heat dissipation sections that penetrate directly into the middle of the busbar structure. These sections rapidly absorb heat from the central conductor and transfer it to the outside via horizontal heat dissipation sections and the outer shell, breaking down heat accumulation barriers and significantly improving heat dissipation efficiency. This eliminates the need to increase the conductor perimeter, reducing material costs and improving operating conditions, making it suitable for high-load scenarios. This application combines heat dissipation, structural support, and protection functions. The raised heat dissipation teeth further enhance heat dissipation, maintaining a small size and large capacity while achieving high-efficiency heat dissipation. This meets the miniaturization and high-efficiency requirements of modern power transmission equipment, has a wide range of applications, and offers superior overall performance.
[0023] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.
Claims
1. A high-efficiency heat dissipation compact busbar trunking, characterized in that, Includes a housing and a busbar structure disposed within the housing; The housing includes a first outer shell and a second outer shell disposed on both sides of the busbar structure, and a heat dissipation structure connecting the first outer shell and the second outer shell; The heat dissipation structure includes a first heat dissipation structure and a second heat dissipation structure; the first heat dissipation structure includes a first horizontal heat dissipation section and a first vertical heat dissipation section extending from the first horizontal heat dissipation section to the second heat dissipation structure; the second heat dissipation structure includes a second horizontal heat dissipation section and a second vertical heat dissipation section extending from the second horizontal heat dissipation section to the first heat dissipation structure. A storage space with openings at both ends is formed between the first outer shell and the second outer shell for placing the busbar structure. The first horizontal heat dissipation part connects the first outer shell and the second outer shell and closes one end opening of the storage space. The first vertical heat dissipation part enters the storage space. The second horizontal heat dissipation part connects the first outer shell and the second outer shell and closes the other end opening of the storage space. The second vertical heat dissipation part enters the storage space.
2. The high-efficiency heat dissipation dense busbar trunking according to claim 1, characterized in that, The first housing includes a first connecting portion, and a first upper extension and a first lower extension disposed at both ends of the first connecting portion and extending to one side; the second housing includes a second connecting portion, and a second upper extension and a second lower extension disposed at both ends of the second connecting portion and extending to one side. The first connecting portion, the second connecting portion, the first horizontal heat dissipation portion, and the second horizontal heat dissipation portion together form the storage space; the first vertical heat dissipation portion and the second vertical heat dissipation portion are arranged coaxially within the storage space; the first upper extension portion and the first lower extension portion, the second upper extension portion and the second lower extension portion extend outward relative to the storage space.
3. The high-efficiency heat dissipation dense busbar trunking according to claim 2, characterized in that, The first upper extension and the second upper extension are bent upward at their two ends relative to the outer side of the storage space and connected to an upper protective net, and the first lower extension and the second lower extension are bent downward at their two ends relative to the outer side of the storage space and connected to a lower protective net.
4. The high-efficiency heat dissipation dense busbar trunking according to claim 2, characterized in that, The first outer shell and the second outer shell are symmetrically arranged relative to the first vertical heat dissipation part and the second vertical heat dissipation part, and the first connecting part, the first upper extension part, the first lower extension part are symmetrically arranged with the second connecting part, the second upper extension part, and the second lower extension part, respectively.
5. The high-efficiency heat dissipation dense busbar trunking according to claim 2, characterized in that, The busbar structure includes a plurality of busbar conductors, which are evenly spaced on both sides of the first vertical heat dissipation section and the second vertical heat dissipation section within the storage space.
6. The high-efficiency heat dissipation dense busbar trunking according to claim 5, characterized in that, The busbar structure includes an L1 phase busbar, an L2 phase busbar, an L3 phase busbar, and an N phase busbar arranged sequentially in the storage space; the first vertical heat dissipation part and the second vertical heat dissipation part are arranged between the L2 phase busbar and the L3 phase busbar.
7. The high-efficiency heat dissipation compact busbar trunking according to claim 1, characterized in that, The outer surface of the busbar structure is wrapped with a polyester film.
8. The high-efficiency heat dissipation dense busbar trunking according to claim 2, characterized in that, The first connecting part and the second connecting part are provided with raised heat dissipation teeth on the outer surface of the storage space.
9. The high-efficiency heat dissipation dense busbar trunking according to claim 4, characterized in that, The first horizontal heat dissipation part, the second horizontal heat dissipation part, the first upper extension part, the first lower extension part, the second upper extension part, and the second lower extension part are arranged in parallel. The first horizontal heat dissipation section extends to both sides relative to the upper opening of the storage space and connects to the upper surfaces of the first upper extension section and the second upper extension section. The second horizontal heat dissipation section extends to both sides relative to the lower opening of the storage space and connects to the lower surfaces of the first lower extension section and the second lower extension section.
10. The high-efficiency heat dissipation compact busbar trunking according to claim 1, characterized in that, The first outer shell and the second outer shell are both integrally formed from metal.