Modularized copper bar outgoing line structure for power electronic product case

Abstract

The invention discloses a modularized copper bar outlet structure for a power electronic product case, and relates to the technical field of power electronic products, comprising a case body composed of an upper side plate, a left side plate, a right side plate and a bottom plate; a plurality of rectangular mounting holes are formed in the upper side plate; the surfaces of the two sides of the upper side plate are detachably connected with an upper clamping plate and a lower clamping plate which are vertically symmetrical, the upper clamping plate and the lower clamping plate are combined to form a copper bar notch corresponding to the rectangular mounting hole, the copper bar penetrates through the rectangular mounting hole, and the middle of the copper bar is clamped in the copper bar notch. The rectangular mounting holes are formed in the upper side plate, and the detachable upper clamping plate and the detachable lower clamping plate form the copper bar notches, so that the copper bars are directly fixed to the upper side plate of the box body, the structure is remarkably simplified, the number of parts and the length of the copper bars are reduced, the mounting space is saved, the cost is reduced, and meanwhile the fixing reliability and the mounting convenience are improved.

Description

Technical Field

[0001] This invention relates to the field of power electronics technology, and more specifically to a modular copper cable tray structure for power electronics product chassis. Background Technology

[0002] In the design of power electronic product enclosures, copper busbars, as a core component for high-current transmission, are crucial to the efficiency and reliability of the equipment. As power electronic devices evolve towards higher power density and greater integration, traditional conductor connection methods are no longer sufficient to meet the demands for low impedance and low heat loss. Copper busbars, with their low resistivity and high current-carrying capacity, have become the preferred conductor for high-voltage, high-current applications.

[0003] Currently, the most common way to secure copper busbars in power electronic products is through an insulating post fixing structure. This method requires a special mounting plate to fix the insulating posts, which are then connected to the copper busbars using screws or bolts. This structure has the following problems: 1. The large number of parts and complex installation increase assembly time and cost; 2. It occupies a large space, which is not conducive to the miniaturization and compact design of equipment; 3. The copper busbar is longer, which not only increases material costs, but also increases resistance and heat loss; 4. The insulation structure is complex, and additional components such as insulating rubber are usually required, which affects installation efficiency and reliability.

[0004] Therefore, while meeting the requirements of electrical insulation and mechanical fixation, existing technologies struggle to simultaneously achieve structural simplification, space saving, and ease of installation. Consequently, there is an urgent need for a copper busbar unit structure that is highly versatile, modular, easy to install, and has high space utilization, in order to meet the high integration and reliability requirements of modern power electronic equipment. Summary of the Invention

[0005] Common copper busbar cabling methods require mounting support plates on the chassis (left and right side panels). The inlet end of the copper busbar is fixed to the support plate via insulating posts, while the outlet end requires a square hole in the upper side panel to extend outwards. Insulating rubber is installed between the copper busbar and the side panel to insulate it from the sheet metal. This installation method, due to the need to fix the copper busbar on the inlet side, requires numerous parts, resulting in a large copper busbar size, high cost, and significant space occupation. Therefore, this invention provides a modular copper busbar cabling structure for power electronic product chassis, aiming to solve the aforementioned technical problems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A modular copper cable tray structure for power electronic product enclosures includes: an enclosure consisting of an upper side plate, a left side plate, a right side plate, and a bottom plate; The upper side plate has multiple rectangular mounting holes; both sides of the upper side plate are detachably connected to symmetrical upper and lower clamping plates. When the upper and lower clamping plates are combined, they form a copper busbar slot corresponding to the rectangular mounting holes. The copper busbar passes through the rectangular mounting holes, and the middle part of the copper busbar is locked in the copper busbar slot.

[0007] Through the above technical solution, the present invention forms a copper busbar slot by setting a rectangular mounting hole on the upper side plate and detachable upper and lower clamping plates, so that the copper busbar can be directly fixed to the upper side plate of the box, which significantly simplifies the structure, reduces the number of parts and the length of the copper busbar, saves installation space, reduces costs, and at the same time improves the fixing reliability and installation convenience.

[0008] Preferably, in the above-mentioned modular copper busbar structure for power electronic product chassis, a variable diameter section is formed in the middle of the copper busbar, and the width of the variable diameter section is smaller than the width of the copper busbar, so that the variable diameter section is engaged in the slot of the copper busbar.

[0009] Preferably, in the above-mentioned modular copper busbar structure for power electronic product chassis, the two ends of the variable diameter section of the copper busbar have 45° chamfered transition sections.

[0010] Preferably, in the above-mentioned modular copper busbar structure for power electronic product chassis, the variable diameter section of the copper busbar and a portion extending to both ends thereof are fitted with insulating heat-shrink sleeves, which insulate the copper busbar from the upper side plate.

[0011] Preferably, in the above-mentioned modular copper busbar structure for power electronic product chassis, the copper busbar and the copper busbar slot are interference-fitted by the insulating heat shrink sleeve.

[0012] Preferably, in the above-mentioned modular copper cable tray structure for power electronic product chassis, both the upper clamping plate and the lower clamping plate are provided with clamping plate connection holes, and the upper side plate is provided with side plate connection holes. The upper clamping plate and the lower clamping plate are fastened to the upper side plate by bolt and nut assemblies passing through the clamping plate connection holes and the side plate connection holes.

[0013] Preferably, in the above-mentioned modular copper cable tray structure for power electronic product chassis, the upper side plate is fixedly connected to the left side plate and the right side plate on both sides via a side plate bracket.

[0014] Preferably, in the above-mentioned modular copper busbar structure for power electronic product chassis, terminal connection holes are provided at both ends of the copper busbar.

[0015] Preferably, in the above-mentioned modular copper cable tray structure for power electronic product chassis, both the upper clamping plate and the lower clamping plate are made of phenolic wood.

[0016] Preferably, in the above-mentioned modular copper busbar structure for power electronic product chassis, the diameter of the rectangular mounting hole is larger than the diameter of the copper busbar slot.

[0017] As can be seen from the above technical solution, compared with the prior art, the present invention discloses a modular copper cable outlet structure for power electronic product chassis, which has the following beneficial effects: 1. Simplified and modular structure: The fixed unit is formed by the combination of the upper clamping plate, the lower clamping plate and the upper side plate, which eliminates the traditional complex insulating column and support plate. There are fewer parts, the structure is more compact, and it is easy to realize modular design and production.

[0018] 2. Easy installation and reduced cost: The number of parts is reduced and the connection method is simple, which greatly simplifies the assembly process and saves installation time and material costs.

[0019] 3. High space utilization: The copper busbar is directly fixed to the upper side plate of the cabinet outlet, which significantly shortens the necessary length of the copper busbar, saves internal space of the cabinet, and is conducive to the miniaturization and high-density layout of the equipment.

[0020] 4. Reliable and high-performance: By utilizing the variable diameter section of the copper busbar and the groove of the clamping plate, and combining it with the insulating heat shrink sleeve to achieve an interference fit, six-directional positioning is achieved, ensuring a firm fixation. At the same time, it reduces the need to drill holes in the copper busbar and improves its current carrying capacity.

[0021] 5. Insulation Integration and Safety: The insulating heat shrink sleeve is directly fitted onto the copper busbar, simultaneously achieving electrical insulation and auxiliary fixing functions, eliminating the need for additional insulating components, simplifying the insulation structure, and improving reliability. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0023] Figure 1 The attached figure is a schematic diagram of the modular copper drop-out line structure provided by the present invention from the inner side direction; Figure 2 The attached figure is a schematic diagram of the modular copper discharge line structure provided by the present invention from the outer direction. Figure 3The attached figure is a schematic diagram of the structure of the upper side plate provided by the present invention; Figure 4 The attached figure is a schematic diagram of the structure of the upper clamping plate and lower clamping plate combined with the copper busbar provided by the present invention; Figure 5 The attached figure is a schematic diagram of the copper busbar provided by the present invention.

[0024] in: 1-Upper side plate; 2-Left side plate; 3-Right side plate; 4-Bottom plate; 5-Rectangular mounting hole; 6-Upper clamping plate; 7-Lower clamping plate; 8-Copper busbar groove; 9-Reducing diameter section; 10-Transition section; 11-Insulating heat shrink sleeve; 12-Clamping plate connection hole; 13-Side plate connection hole; 14-Bolt and nut assembly; 15-Side plate bracket; 16-Terminal connection hole; 17-Copper busbar. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] See appendix Figure 1 To be continued Figure 4 This invention discloses a modular copper cable tray structure for a power electronic product chassis, comprising: a chassis consisting of an upper side plate 1, a left side plate 2, a right side plate 3, and a bottom plate 4; The upper side plate 1 has multiple rectangular mounting holes 5; both sides of the upper side plate 1 are detachably connected to an upper clamping plate 6 and a lower clamping plate 7 that are symmetrical. After the upper clamping plate 6 and the lower clamping plate 7 are combined, a copper busbar slot 8 corresponding to the rectangular mounting holes 5 is formed. The copper busbar 17 passes through the rectangular mounting holes 5, and the middle part of the copper busbar 17 is stuck in the copper busbar slot 8.

[0027] See appendix Figure 5 A variable diameter section 9 is formed in the middle of the copper busbar 17. The width of the variable diameter section 9 is smaller than the width of the copper busbar 17, so that the variable diameter section 9 is stuck in the copper busbar slot 8.

[0028] To further optimize the above technical solution, the two ends of the variable diameter section 9 of the copper busbar 17 are formed with a 45° chamfered transition section 10, which can restrict the movement of the copper busbar 17.

[0029] To further optimize the above technical solution, the variable diameter section 9 of the copper busbar 17 and a portion extending to both ends thereto are fitted with insulating heat shrink sleeves 11, which insulate the copper busbar 17 from the upper side plate 1.

[0030] To further optimize the above technical solution, the copper busbar 17 and the copper busbar slot 8 are interference-fitted by the insulating heat shrink sleeve 11, so that the copper busbar 17 is fixed more securely.

[0031] To further optimize the above technical solution, clamping plate 6 and lower clamping plate 7 are provided with clamping plate connection holes 12, and side plate connection holes 13 are provided on the upper side plate 1. The upper clamping plate 6 and lower clamping plate 7 are fastened to the upper side plate 1 by bolt and nut assembly 14 passing through the clamping plate connection holes 12 and the side plate connection holes 13.

[0032] To further optimize the above technical solution, the upper side plate 1 is fixedly connected to the left side plate 2 and the right side plate 3 on both sides through the side plate bracket 15.

[0033] To further optimize the above technical solution, terminal connection holes 16 are provided at both ends of the copper busbar 17.

[0034] To further optimize the above technical solution, both the upper plywood 6 and the lower plywood 7 are made of phenolic resin.

[0035] To further optimize the above technical solution, the diameter of the rectangular mounting hole 5 is larger than the diameter of the copper busbar slot 8.

[0036] The upper clamp 6 and lower clamp 7 restrict the movement of the copper busbar 17 in the up, down, left, right, front, and back directions, firmly fixing the copper busbar 17 to the chassis. This clamp method of fixing the copper busbar 17, because it is directly fixed to the upper side plate 1 of the outlet, can significantly reduce the length of the copper busbar and save installation space. At the same time, the clamp method of fixing the copper busbar 17 is reliable, reduces the number of holes to be drilled on the copper busbar 17, improves the current carrying capacity of the copper busbar, has fewer installed parts, is easy to install, and reduces costs. An insulating heat-shrink sleeve 11 is fitted between the copper busbar 17 and the clamp for electrical insulation and also to better fix the copper busbar to the clamp. The clamp-type copper busbar outgoing unit is versatile, with a simple outgoing unit structure, strong model adaptability, and can be used in different cabinet structures, making it easier to replace during use.

[0037] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0038] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A modular copper cable tray structure for power electronic product chassis, comprising: A box-shaped structure consisting of an upper side panel (1), a left side panel (2), a right side panel (3), and a bottom panel (4); characterized in that: The upper side plate (1) has multiple rectangular mounting holes (5); both sides of the upper side plate (1) are detachably connected to an upper clamping plate (6) and a lower clamping plate (7) that are symmetrical. The upper clamping plate (6) and the lower clamping plate (7) are combined to form a copper busbar slot (8) corresponding to the rectangular mounting holes (5). The copper busbar (17) passes through the rectangular mounting holes (5), and the middle part of the copper busbar (17) is locked in the copper busbar slot (8).

2. The modular copper cable tray structure for power electronic product chassis according to claim 1, characterized in that, A variable diameter section (9) is formed in the middle of the copper busbar (17). The width of the variable diameter section (9) is smaller than the width of the copper busbar (17), so that the variable diameter section (9) is stuck in the slot (8) of the copper busbar.

3. A modular copper cable tray structure for a power electronic product chassis according to claim 2, characterized in that, The copper busbar (17) has transition sections (10) with a 45° chamfer at both ends of the variable diameter section (9).

4. A modular copper cable tray structure for a power electronic product chassis according to claim 3, characterized in that, The variable diameter section (9) of the copper busbar (17) and a portion extending to both ends thereof are fitted with insulating heat shrink sleeves (11), which insulate the copper busbar (17) from the upper side plate (1).

5. A modular copper cable tray structure for a power electronic product chassis according to claim 4, characterized in that, The copper busbar (17) and the copper busbar slot (8) are interference-fitted by the insulating heat shrink sleeve (11).

6. A modular copper cable tray structure for a power electronic product chassis according to claim 1, characterized in that, Both the upper clamping plate (6) and the lower clamping plate (7) are provided with clamping plate connection holes (12), and the upper side plate (1) is provided with side plate connection holes (13). The upper clamping plate (6) and the lower clamping plate (7) are fastened to the upper side plate (1) by means of bolt and nut assembly (14) passing through the clamping plate connection holes (12) and the side plate connection holes (13).

7. A modular copper cable tray structure for a power electronic product chassis according to claim 1, characterized in that, The upper side plate (1) is fixedly connected to the left side plate (2) and the right side plate (3) on both sides by a side plate bracket (15).

8. A modular copper cable tray structure for a power electronic product chassis according to claim 1, characterized in that, The copper busbar (17) has terminal connection holes (16) at both ends.

9. A modular copper cable tray structure for a power electronic product chassis according to claim 1, characterized in that, Both the upper clamping plate (6) and the lower clamping plate (7) are made of phenolic resin.

10. A modular copper cable tray structure for a power electronic product chassis according to claim 1, characterized in that, The diameter of the rectangular mounting hole (5) is larger than the diameter of the copper busbar slot (8).

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