Copper bar connecting structure of three-wire confluence cabinet

Abstract

The utility model provides a copper bar connecting structure of a three-wire confluence cabinet. The copper bar connecting structure comprises a first switch assembly, a second switch assembly, a first copper bar, a second copper bar, a first fuse, a second fuse, a third copper bar, a fourth copper bar, a fifth copper bar, a first fixing plate, a second fixing plate, a third fuse and a seventh copper bar. The first copper bar is connected with the first switch assembly and the second switch assembly. The second copper bar is connected with the first switch assembly and the second switch assembly. The first fuse is connected with the first copper bar and the third copper bar. The second fuse is connected with the second copper bar and the fourth copper bar. The fifth copper bar is connected with the first switch assembly and the second switch assembly. The third fuse is connected with the fifth copper bar and the seventh copper bar. The first switch assembly and the second switch assembly are both connected with the first fixing plate and the second fixing plate. According to the invention, the layout of each element is reasonable, the size of the cabinet body is reduced, and the use safety and reliability are good.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a copper busbar connection structure for a three-wire combiner cabinet. Background Technology

[0002] In energy storage systems, combiner cabinets are typically used to reduce the wiring between battery arrays and UPS systems. Users can connect a certain number of batteries of the same specifications in series to form a cluster, and multiple clusters can be connected in parallel. These clusters, along with controllers, DC distribution cabinets, inverters, and AC distribution cabinets, form a complete battery energy storage system that can be connected to the mains power grid. Under a constant voltage, the more energy storage systems connected to the grid, the higher the system energy and the greater the current. Combiner devices can combine the current from multiple energy storage systems. These devices are typically combiner cabinets, which contain busbars and disconnect switches. The current from multiple energy storage systems converges on the busbar and is then output to the downstream equipment after passing through the disconnect switch.

[0003] To ensure overall airtightness, the existing combiner cabinet's side and top panels are all welded together and cannot be disassembled. When electrical components need to be installed or repaired, the cabinet door can only be opened from the front, which is very inconvenient. Moreover, the existing cabinet frame has low internal space utilization, a large cabinet volume, poor maintainability of major components and power modules, and a chaotic layout, making installation and disassembly difficult and unfavorable for installation and maintenance. Utility Model Content

[0004] Based on this, the present invention provides a copper busbar connection structure for a three-line combiner cabinet, which aims to solve the problems of chaotic internal layout, difficult wiring, low space utilization, inconvenience for installation and maintenance, and high overall cabinet cost of existing combiner cabinets.

[0005] To achieve the above objectives, this utility model provides a copper busbar connection structure for a three-wire combiner cabinet, including a first switch assembly, a second switch assembly, a first copper busbar, a second copper busbar, a first fuse, a second fuse, a third copper busbar, a fourth copper busbar, a fifth copper busbar, a first fixing plate, a second fixing plate, a third fuse, and a seventh copper busbar;

[0006] One end of the first copper busbar is connected to the first switch assembly, and the other end is connected to the second switch assembly; one end of the second copper busbar is connected to the first switch assembly, and the other end is connected to the second switch assembly; the first fuse is connected to the first copper busbar and the third copper busbar respectively; the second fuse is connected to the second copper busbar and the fourth copper busbar respectively; one end of the fifth copper busbar is connected to the first switch assembly, and the other end is connected to the second switch assembly; the third fuse is connected to the fifth copper busbar and the seventh copper busbar respectively.

[0007] The first switch assembly is connected to the first fixing plate and the second fixing plate respectively; the second switch assembly is connected to the first fixing plate and the second fixing plate respectively.

[0008] In a preferred embodiment, the first fuse is disposed on the first copper busbar, the third copper busbar is disposed on the first fuse; the second fuse is disposed on the second copper busbar, the fourth copper busbar is disposed on the second fuse; the third fuse is disposed on the fifth copper busbar, and the seventh copper busbar is disposed on the third fuse.

[0009] In a preferred embodiment, the first switch assembly and the second switch assembly are arranged side by side, and the first switch assembly and the second switch assembly have the same structure.

[0010] In a preferred embodiment, the first switch assembly includes a first switch body, a first switch copper busbar, a second switch copper busbar and a third switch copper busbar disposed on the top of the first switch body, and a fourth switch copper busbar, a fifth switch copper busbar and a sixth switch copper busbar disposed on the bottom of the first switch body.

[0011] The second switch copper busbar is disposed between the first switch copper busbar and the third switch copper busbar; the fifth switch copper busbar is disposed between the fourth switch copper busbar and the sixth switch copper busbar; the third switch copper busbar and the sixth switch copper busbar are both disposed close to the second switch assembly;

[0012] The second switch copper busbar is fixedly connected to the first fixing plate; the fourth switch copper busbar, the fifth switch copper busbar, and the sixth switch copper busbar are respectively fixedly connected to the second fixing plate.

[0013] In a preferred embodiment, the first switch busbar, the second switch busbar, and the third switch busbar are all L-shaped busbars; the end of the first switch busbar away from the first switch body and the end of the third switch busbar away from the first switch body extend in opposite directions; the end of the second switch busbar away from the first switch body and the end of the third switch busbar away from the first switch body extend in the same direction.

[0014] In a preferred embodiment, the length of the end of the first switch copper busbar away from the first switch body is less than the length of the end of the third switch copper busbar away from the first switch body; the length of the end of the second switch copper busbar away from the first switch body is greater than the length of the end of the third switch copper busbar away from the first switch body.

[0015] The end of the first switch copper busbar furthest from the first switch body is connected to the first copper busbar; the end of the second switch copper busbar furthest from the first switch body is connected to the fifth copper busbar; the end of the third switch copper busbar furthest from the first switch body is connected to the second copper busbar.

[0016] The first copper busbar is fixedly connected to the first switch copper busbar and the third switch copper busbar respectively by fasteners.

[0017] In a preferred embodiment, the height of the end of the first switch copper busbar closest to the first switch body is greater than the height of the end of the third switch copper busbar closest to the first switch body; the height of the end of the third switch copper busbar closest to the first switch body is greater than the height of the end of the second switch copper busbar closest to the first switch body.

[0018] In a preferred embodiment, the fourth switch copper busbar, the fifth switch copper busbar, and the sixth switch copper busbar are all bent multi-segment copper busbars; the bent multi-segment copper busbar includes an integrally formed first bent portion, a second bent portion, and a third bent portion; the first bent portion is perpendicularly disposed at one end of the second bent portion, the third bent portion is perpendicularly disposed at the other end of the second bent portion, and the first bent portion and the third bent portion extend in opposite directions;

[0019] The first bending portion is connected to the bottom of the first switch body; the second bending portion is fixedly connected to the second fixing plate; the third bending portion of the sixth switch copper busbar is connected to the sixth copper busbar; the third bending portion of the fifth switch copper busbar is connected to the eighth copper busbar; and the third bending portion of the fourth switch copper busbar is connected to the ninth copper busbar.

[0020] In a preferred embodiment, the heights of the first bends of the fourth switch copper busbar, the fifth switch copper busbar, and the sixth switch copper busbar are all equal.

[0021] The length of the second bend of the fourth switch copper busbar is less than the length of the second bend of the fifth switch copper busbar; the length of the second bend of the fifth switch copper busbar is less than the length of the second bend of the sixth switch copper busbar;

[0022] The height of the third bend of the fourth switch copper busbar is less than the height of the third bend of the fifth switch copper busbar; the height of the third bend of the fifth switch copper busbar is less than the height of the third bend of the sixth switch copper busbar.

[0023] In a preferred embodiment, the second switch assembly includes a second switch body, a seventh, eighth and ninth switch copper busbars disposed on the top of the second switch body, and a tenth, eleventh and twelfth switch copper busbars disposed on the bottom of the second switch body.

[0024] The eighth switch copper busbar is disposed between the seventh switch copper busbar and the ninth switch copper busbar; the eleventh switch copper busbar is disposed between the tenth switch copper busbar and the twelfth switch copper busbar; the seventh switch copper busbar is disposed close to the third switch copper busbar, and the tenth switch copper busbar is disposed close to the sixth switch copper busbar.

[0025] In a preferred embodiment, the seventh switch busbar is connected to the first busbar; the eighth switch busbar is fixed to the first fixing plate and is connected to the fifth busbar; the ninth switch busbar is connected to the second busbar.

[0026] The tenth switch copper busbar is connected to the ninth copper busbar; the eleventh switch copper busbar is connected to the eighth copper busbar; the twelfth switch copper busbar is connected to the sixth copper busbar.

[0027] The tenth switch copper busbar, the eleventh switch copper busbar, and the twelfth switch copper busbar are all fixed to the second fixing plate.

[0028] In a preferred embodiment, one end of the first copper busbar is connected to the first switch copper busbar, and the other end is connected to the seventh switch copper busbar; one end of the second copper busbar is connected to the third switch copper busbar, and the other end is connected to the ninth switch copper busbar; one end of the fifth copper busbar is connected to the second switch copper busbar, and the other end is connected to the eighth switch copper busbar.

[0029] One end of the sixth copper busbar is connected to the sixth switch copper busbar, and the other end is connected to the twelfth switch copper busbar; one end of the eighth copper busbar is connected to the fifth switch copper busbar, and the other end is connected to the eleventh switch copper busbar; one end of the ninth copper busbar is connected to the fourth switch copper busbar, and the other end is connected to the tenth switch copper busbar.

[0030] In a preferred embodiment, the seventh switch copper busbar is symmetrically arranged with the first switch copper busbar, and the seventh switch copper busbar has the same structure as the first switch copper busbar;

[0031] The eighth switch copper busbar is symmetrically arranged with the second switch copper busbar, and the eighth switch copper busbar and the second switch copper busbar have the same structure;

[0032] The ninth switch copper busbar is symmetrically arranged with the third switch copper busbar, and the ninth switch copper busbar and the third switch copper busbar have the same structure;

[0033] The tenth switch copper busbar is symmetrically arranged with the fourth switch copper busbar, and the tenth switch copper busbar and the fourth switch copper busbar have the same structure;

[0034] The eleventh switch copper busbar is symmetrically arranged with the fifth switch copper busbar, and the eleventh switch copper busbar and the fifth switch copper busbar have the same structure;

[0035] The twelfth switch copper busbar is symmetrically arranged with the sixth switch copper busbar, and the twelfth switch copper busbar and the sixth switch copper busbar have the same structure.

[0036] In a preferred embodiment, the three-wire combiner cabinet copper busbar connection structure further includes a third fixing plate; the sixth switch copper busbar and the twelfth switch copper busbar are respectively fixedly connected to the third fixing plate.

[0037] In a preferred embodiment, the three-wire busbar connection structure further includes a first epoxy board, one end of which is disposed on the top of the first switch body and the other end of which is disposed on the top of the second switch body; the first switch copper busbar, the second switch copper busbar, the third switch copper busbar, the seventh switch copper busbar, the eighth switch copper busbar and the ninth switch copper busbar are all fixed on the first epoxy board.

[0038] In a preferred embodiment, the three-wire combiner cabinet copper busbar connection structure further includes a second epoxy board, the fifth switch copper busbar and the eleventh switch copper busbar are respectively fixedly connected to one side of the second epoxy board; the sixth switch copper busbar and the twelfth switch copper busbar are respectively fixedly connected to the other side of the second epoxy board.

[0039] In a preferred embodiment, the three-wire combiner cabinet copper busbar connection structure further includes a third epoxy board, the fourth switch copper busbar and the tenth switch copper busbar are respectively fixedly connected to one side of the third epoxy board; the fifth switch copper busbar and the eleventh switch copper busbar are respectively fixedly connected to the other side of the third epoxy board;

[0040] The fifth switch copper busbar and the eleventh switch copper busbar are both disposed between the second epoxy board and the third epoxy board.

[0041] Compared to existing technologies, the structure of this application has the following technical advantages: This structure enables front maintenance of both switches and fuses, facilitating installation and maintenance, and ensuring a stable and reliable transport connection. By controlling the connection method of each copper busbar, this application effectively optimizes the cabinet structure, improves the space utilization within the cabinet, results in a rational cable layout, and aesthetically pleasing wiring, while also effectively saving on the cost of the combiner cabinet. This application allows for a rational layout of copper busbars, achieving a reasonable distribution of cables, effectively optimizing wiring space, facilitating installation and maintenance, meeting the requirements of customers using UPS systems without a neutral wire, and effectively improving the heat dissipation of each copper busbar and fuse, facilitating the installation and maintenance of various components within the combiner cabinet. Attached Figure Description

[0042] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0043] Figure 1 This is a schematic diagram of the copper busbar connection structure of a three-wire combiner cabinet according to an embodiment of the present invention;

[0044] Figure 2 for Figure 1 A schematic diagram of the copper busbar connection structure of the three-line combiner cabinet from another angle;

[0045] Figure 3 for Figure 1 A schematic diagram of the copper busbar connection structure of the three-line combiner cabinet from another angle;

[0046] Figure 4 for Figure 1 A schematic diagram of the copper busbar connection structure of the three-line combiner cabinet in use;

[0047] Figure 5 This is a schematic diagram of the combiner cabinet in this application.

[0048] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0049] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0050] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, top, bottom, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0051] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0052] It should be noted that when a component is described as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intervening component. When a component is described as "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0053] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0054] This application features a simple structure, a reasonable and compact copper busbar layout, and straightforward connections, making it easy to implement, assembly efficient, and installation cost-effective. It optimizes the internal space layout of the combiner cabinet, resulting in a pleasing and simple overall appearance, convenient maintenance, and suitability for mass production. It effectively solves the problem of optimizing the internal space layout of combiner cabinets. Simultaneously, it effectively improves the problem of insufficient cable space affecting the electrical performance of the combiner cabinet, enhances space utilization, effectively saves installation time, and facilitates subsequent maintenance.

[0055] Specifically, such as Figures 1 to 3 As shown, one embodiment of this utility model provides a copper busbar connection structure for a three-wire combiner cabinet, including a first switch assembly 10, a second switch assembly 20, a first copper busbar 30, a second copper busbar 40, a first fuse 50, a second fuse 60, a third copper busbar 70, a fourth copper busbar 80, a fifth copper busbar 90, a first fixing plate 100, a second fixing plate 110, a third fuse 120, and a seventh copper busbar 130;

[0056] One end of the first copper busbar 30 is connected to the first switch assembly 10, and the other end is connected to the second switch assembly 20; one end of the second copper busbar 40 is connected to the first switch assembly 10, and the other end is connected to the second switch assembly 20; the first fuse 50 is connected to the first copper busbar 30 and the third copper busbar 70 respectively; the second fuse 60 is connected to the second copper busbar 40 and the fourth copper busbar 80 respectively; one end of the fifth copper busbar 90 is connected to the first switch assembly 10, and the other end is connected to the second switch assembly 20; the third fuse 120 is connected to the fifth copper busbar 90 and the seventh copper busbar 130 respectively.

[0057] The first switch assembly 10 is connected to the first fixing plate 100 and the second fixing plate 110 respectively; the second switch assembly 20 is connected to the first fixing plate 100 and the second fixing plate 110 respectively.

[0058] In a preferred embodiment, the first fuse 50 is disposed on the first copper busbar 30, the third copper busbar 70 is disposed on the first fuse 50; the second fuse 60 is disposed on the second copper busbar 40, the fourth copper busbar 80 is disposed on the second fuse 60; the third fuse 120 is disposed on the fifth copper busbar 90, and the seventh copper busbar 130 is disposed on the third fuse 120.

[0059] In a preferred embodiment, the first switch assembly 10 and the second switch assembly 20 are arranged side by side, and the first switch assembly 10 and the second switch assembly 20 have the same structure. This allows the two switch assemblies to be connected in parallel effectively.

[0060] In a preferred embodiment, the first switch assembly includes a first switch body 11, a first switch copper busbar 12, a second switch copper busbar 13 and a third switch copper busbar 14 disposed on the top of the first switch body 11, and a fourth switch copper busbar 15, a fifth switch copper busbar 16 and a sixth switch copper busbar 17 disposed on the bottom of the first switch body 11.

[0061] The second switch copper busbar 13 is disposed between the first switch copper busbar 12 and the third switch copper busbar 14; the fifth switch copper busbar 16 is disposed between the fourth switch copper busbar 15 and the sixth switch copper busbar 17; the third switch copper busbar 14 and the sixth switch copper busbar 17 are both disposed close to the second switch assembly 20;

[0062] The second switch copper busbar 13 is fixedly connected to the first fixing plate 100; the fourth switch copper busbar 15, the fifth switch copper busbar 16, and the sixth switch copper busbar 17 are respectively fixedly connected to the second fixing plate 110.

[0063] In a preferred embodiment, the first switch busbar 12, the second switch busbar 13, and the third switch busbar 14 are all L-shaped copper busbars. The end of the first switch busbar 12 away from the first switch body 11 and the end of the third switch busbar 14 away from the first switch body 11 extend in opposite directions. The end of the second switch busbar 13 away from the first switch body 11 and the end of the third switch busbar 14 away from the first switch body 11 extend in the same direction. This arrangement facilitates connection, saves connection space, provides good connection stability, and results in a neat and aesthetically pleasing overall appearance. Simultaneously, it effectively addresses the problem of insufficient cable space affecting the electrical performance of the busbar cabinet.

[0064] In a preferred embodiment, the length of the end of the first switch copper busbar 12 furthest from the first switch body 11 is less than the length of the end of the third switch copper busbar 14 furthest from the first switch body 11; the length of the end of the second switch copper busbar 13 furthest from the first switch body 11 is greater than the length of the end of the third switch copper busbar 14 furthest from the first switch body 11. This arrangement facilitates connection and saves connection space, while also providing good connection stability and an overall neat and aesthetically pleasing appearance. Furthermore, it effectively addresses the issue of insufficient cable space affecting the electrical performance of the combiner cabinet.

[0065] The end of the first switch copper busbar 12 away from the first switch body 11 is connected to the first copper busbar 30; the end of the second switch copper busbar 13 away from the first switch body 11 is connected to the fifth copper busbar 90; the end of the third switch copper busbar 14 away from the first switch body 11 is connected to the second copper busbar 40.

[0066] The first copper busbar 30 is fixedly connected to the first switch copper busbar 12 and the third switch copper busbar 14 respectively by the fastener 140.

[0067] In a preferred embodiment, the height of the end of the first switch copper busbar 12 closest to the first switch body 11 is greater than the height of the end of the third switch copper busbar 14 closest to the first switch body 11; the height of the end of the third switch copper busbar 14 closest to the first switch body 11 is greater than the height of the end of the second switch copper busbar 13 closest to the first switch body 11. This arrangement facilitates connection, saves connection space, provides good connection stability, and results in a neat and aesthetically pleasing overall appearance. Simultaneously, it effectively addresses the issue of insufficient cable space affecting the electrical performance of the combiner cabinet.

[0068] In a preferred embodiment, the fourth switch copper busbar 15, the fifth switch copper busbar 16, and the sixth switch copper busbar 17 are all bent multi-segment copper busbars; the bent multi-segment copper busbar includes an integrally formed first bent portion, second bent portion, and third bent portion; the first bent portion is perpendicularly disposed at one end of the second bent portion, the third bent portion is perpendicularly disposed at the other end of the second bent portion, and the first bent portion and the third bent portion extend in opposite directions;

[0069] The first bend is connected to the bottom of the first switch body 11; the second bend is fixedly connected to the second fixing plate 100; the third bend of the sixth switch copper busbar 17 is connected to the sixth copper busbar 150; the third bend of the fifth switch copper busbar 16 is connected to the eighth copper busbar 160; and the third bend of the fourth switch copper busbar 15 is connected to the ninth copper busbar 170. This arrangement facilitates connection, saves space, provides good connection stability, and results in a neat and aesthetically pleasing overall appearance. Simultaneously, it effectively addresses the issue of insufficient cable space affecting the electrical performance of the combiner cabinet.

[0070] In a preferred embodiment, the heights of the first bend of the fourth switch copper busbar 15, the first bend of the fifth switch copper busbar 16, and the first bend of the sixth switch copper busbar 17 are all equal.

[0071] The length of the second bend of the fourth switch copper busbar 15 is less than the length of the second bend of the fifth switch copper busbar 16; the length of the second bend of the fifth switch copper busbar 16 is less than the length of the second bend of the sixth switch copper busbar 17.

[0072] The height of the third bend of the fourth switch copper busbar 15 is less than the height of the third bend of the fifth switch copper busbar 16; the height of the third bend of the fifth switch copper busbar 16 is less than the height of the third bend of the sixth switch copper busbar 17. This arrangement places the fourth switch copper busbar 15, the fifth switch copper busbar 16, and the sixth switch copper busbar 17 on different planes, facilitating connection, saving connection space, improving connection stability, and resulting in a neat and aesthetically pleasing overall appearance. Simultaneously, it effectively addresses the issue of insufficient cable space affecting the electrical performance of the combiner cabinet.

[0073] In this embodiment, the fourth switch busbar 15, the fifth switch busbar 16, and the sixth switch busbar 17 are all integrated multi-segment designs, which facilitates assembly, saves connection space, improves assembly and disassembly efficiency, and effectively reduces the risk of cable bending due to insufficient space, thus affecting electrical performance. The switches can be 1600A-1500VDC-3P disconnect switches.

[0074] In a preferred embodiment, the second switch assembly 20 includes a second switch body 21, a seventh switch copper busbar 22, an eighth switch copper busbar 23 and a ninth switch copper busbar 24 disposed on the top of the second switch body 21, and a tenth switch copper busbar 25, an eleventh switch copper busbar 26 and a twelfth switch copper busbar 27 disposed on the bottom of the second switch body 21.

[0075] The eighth switch copper busbar 23 is disposed between the seventh switch copper busbar 22 and the ninth switch copper busbar 24; the eleventh switch copper busbar 26 is disposed between the tenth switch copper busbar 25 and the twelfth switch copper busbar 27; the seventh switch copper busbar 22 is disposed close to the third switch copper busbar 14, and the tenth switch copper busbar 25 is disposed close to the sixth switch copper busbar 17.

[0076] In a preferred embodiment, the seventh switch copper busbar 22 is connected to the first copper busbar 30; the eighth switch copper busbar 23 is fixed on the first fixing plate 100 and is connected to the fifth copper busbar 90; the ninth switch copper busbar 24 is connected to the second copper busbar 40.

[0077] The tenth switch copper busbar 25 is connected to the ninth copper busbar 170; the eleventh switch copper busbar 26 is connected to the eighth copper busbar 160; the twelfth switch copper busbar 27 is connected to the sixth copper busbar 150.

[0078] The tenth switch copper busbar 25, the eleventh switch copper busbar 26, and the twelfth switch copper busbar 27 are all fixed on the second fixing plate 110.

[0079] In a preferred embodiment, one end of the first copper busbar 30 is connected to the first switch copper busbar 12, and the other end is connected to the seventh switch copper busbar 22; one end of the second copper busbar 40 is connected to the third switch copper busbar 14, and the other end is connected to the ninth switch copper busbar 24; one end of the fifth copper busbar 90 is connected to the second switch copper busbar 13, and the other end is connected to the eighth switch copper busbar 23.

[0080] One end of the sixth copper busbar 150 is connected to the sixth switch copper busbar 17, and the other end is connected to the twelfth switch copper busbar 27; one end of the eighth copper busbar 160 is connected to the fifth switch copper busbar 16, and the other end is connected to the eleventh switch copper busbar 26; one end of the ninth copper busbar 170 is connected to the fourth switch copper busbar 15, and the other end is connected to the tenth switch copper busbar 25.

[0081] In a preferred embodiment, the seventh switch copper busbar 22 is symmetrically arranged with the first switch copper busbar 12, and the seventh switch copper busbar 22 and the first switch copper busbar 12 have the same structure;

[0082] The eighth switch copper busbar 23 is symmetrically arranged with the second switch copper busbar 13, and the eighth switch copper busbar 23 and the second switch copper busbar 13 have the same structure;

[0083] The ninth switch copper busbar 24 is symmetrically arranged with the third switch copper busbar 14, and the ninth switch copper busbar 24 and the third switch copper busbar 14 have the same structure;

[0084] The tenth switch copper busbar 25 is symmetrically arranged with the fourth switch copper busbar 15, and the tenth switch copper busbar 25 and the fourth switch copper busbar 15 have the same structure;

[0085] The eleventh switch copper busbar 26 is symmetrically arranged with the fifth switch copper busbar 16, and the eleventh switch copper busbar 26 and the fifth switch copper busbar 16 have the same structure;

[0086] The twelfth switch copper busbar 27 is symmetrically arranged with the sixth switch copper busbar 17, and the twelfth switch copper busbar 27 and the sixth switch copper busbar 17 have the same structure.

[0087] In a preferred embodiment, the three-wire busbar connection structure further includes a third fixing plate 180; the sixth switch busbar 17 and the twelfth switch busbar 27 are respectively fixedly connected to the third fixing plate 180.

[0088] In a preferred embodiment, the three-wire busbar connection structure further includes a first epoxy board 190, one end of which is disposed on the top of the first switch body 11 and the other end of which is disposed on the top of the second switch body 21; the first switch copper busbar 12, the second switch copper busbar 13, the third switch copper busbar 14, the seventh switch copper busbar 22, the eighth switch copper busbar 23 and the ninth switch copper busbar 24 are all fixed on the first epoxy board 190.

[0089] In a preferred embodiment, the three-wire busbar connection structure further includes a second epoxy board 200, the fifth switch busbar 16 and the eleventh switch busbar 26 are respectively fixedly connected to one side of the second epoxy board 200; the sixth switch busbar 17 and the twelfth switch busbar 27 are respectively fixedly connected to the other side of the second epoxy board 200.

[0090] In a preferred embodiment, the three-wire busbar connection structure further includes a third epoxy board 210, the fourth switch busbar 15 and the tenth switch busbar 25 are respectively fixedly connected to one side of the third epoxy board 210; the fifth switch busbar 16 and the eleventh switch busbar 26 are respectively fixedly connected to the other side of the third epoxy board 210.

[0091] The fifth switch copper busbar 16 and the eleventh switch copper busbar 26 are both disposed between the second epoxy plate 200 and the third epoxy plate 210.

[0092] In this embodiment of the application, the two ends of the first fixing plate, the two ends of the second fixing plate, the two ends of the third fixing plate, and the two ends of the first epoxy board are respectively fixedly connected to the junction box A.

[0093] like Figures 4 to 5 As shown in the embodiment of this application, the combiner cabinet (a 2500A-3-line (positive, N, negative) combiner cabinet with dimensions of 850*1000*2000mm and a protection rating of IP21. This application's structure uses two 1600A switches in parallel to achieve a 3200A combiner effect. The incoming line method is top-in and top-out, and the bottom plate is designed with knockout holes for bottom-out compatibility.) includes a cabinet body. Inside the cabinet body, guide rails A1 and mounting plates A2 are symmetrically installed on both sides. The first, second, and third mounting plates are fixed to the guide rails A1 or the mounting plates A2 as needed, resulting in high space utilization. The copper busbars of the combiner cabinet's copper busbar connection structure support front maintenance, making maintenance convenient.

[0094] The top of the combiner cabinet can be equipped with a cable tray for cable entry, or it can be directly connected to the customer's cable tray. The top panel of the combiner cabinet has corresponding mounting wires and knock-out holes to accommodate both top-entry and top-outlet cables. The interior of the combiner cabinet features a cable winding beam for easy cable routing and securing, resulting in a sleek and aesthetically pleasing design.

[0095] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A copper busbar connection structure for a three-wire combiner cabinet, characterized in that, It includes a first switch assembly, a second switch assembly, a first copper busbar, a second copper busbar, a first fuse, a second fuse, a third copper busbar, a fourth copper busbar, a fifth copper busbar, a first fixing plate, a second fixing plate, a third fuse, and a seventh copper busbar; One end of the first copper busbar is connected to the first switch assembly, and the other end is connected to the second switch assembly; one end of the second copper busbar is connected to the first switch assembly, and the other end is connected to the second switch assembly; the first fuse is connected to the first copper busbar and the third copper busbar respectively; the second fuse is connected to the second copper busbar and the fourth copper busbar respectively; one end of the fifth copper busbar is connected to the first switch assembly, and the other end is connected to the second switch assembly; the third fuse is connected to the fifth copper busbar and the seventh copper busbar respectively. The first switch assembly is connected to the first fixing plate and the second fixing plate respectively; the second switch assembly is connected to the first fixing plate and the second fixing plate respectively.

2. The copper busbar connection structure of the three-wire busbar cabinet according to claim 1, characterized in that, The first fuse is disposed on the first copper busbar, and the third copper busbar is disposed on the first fuse; the second fuse is disposed on the second copper busbar, and the fourth copper busbar is disposed on the second fuse; the third fuse is disposed on the fifth copper busbar, and the seventh copper busbar is disposed on the third fuse.

3. The copper busbar connection structure of the three-wire busbar cabinet according to claim 1, characterized in that, The first switch assembly and the second switch assembly are arranged side by side, and the first switch assembly and the second switch assembly have the same structure.

4. The copper busbar connection structure of the three-wire busbar cabinet according to claim 1, characterized in that, The first switch assembly includes a first switch body, a first switch copper busbar, a second switch copper busbar and a third switch copper busbar disposed on the top of the first switch body, and a fourth switch copper busbar, a fifth switch copper busbar and a sixth switch copper busbar disposed on the bottom of the first switch body; The second switch copper busbar is disposed between the first switch copper busbar and the third switch copper busbar; the fifth switch copper busbar is disposed between the fourth switch copper busbar and the sixth switch copper busbar; the third switch copper busbar and the sixth switch copper busbar are both disposed close to the second switch assembly; The second switch copper busbar is fixedly connected to the first fixing plate; the fourth switch copper busbar, the fifth switch copper busbar, and the sixth switch copper busbar are respectively fixedly connected to the second fixing plate.

5. The copper busbar connection structure of the three-wire busbar cabinet according to claim 4, characterized in that, The first switch copper busbar, the second switch copper busbar, and the third switch copper busbar are all L-shaped copper busbars; the end of the first switch copper busbar away from the first switch body and the end of the third switch copper busbar away from the first switch body extend in opposite directions; the end of the second switch copper busbar away from the first switch body and the end of the third switch copper busbar away from the first switch body extend in the same direction.

6. The copper busbar connection structure of the three-wire busbar cabinet according to claim 4, characterized in that, The length of the end of the first switch copper busbar furthest from the first switch body is less than the length of the end of the third switch copper busbar furthest from the first switch body; the length of the end of the second switch copper busbar furthest from the first switch body is greater than the length of the end of the third switch copper busbar furthest from the first switch body. The end of the first switch copper busbar furthest from the first switch body is connected to the first copper busbar; the end of the second switch copper busbar furthest from the first switch body is connected to the fifth copper busbar; the end of the third switch copper busbar furthest from the first switch body is connected to the second copper busbar. The first copper busbar is fixedly connected to the first switch copper busbar and the third switch copper busbar respectively by fasteners; The height of the end of the first switch copper busbar closest to the first switch body is greater than the height of the end of the third switch copper busbar closest to the first switch body; the height of the end of the third switch copper busbar closest to the first switch body is greater than the height of the end of the second switch copper busbar closest to the first switch body.

7. The copper busbar connection structure of the three-wire busbar cabinet according to claim 4, characterized in that, The fourth switch copper busbar, the fifth switch copper busbar, and the sixth switch copper busbar are all bent multi-segment copper busbars; the bent multi-segment copper busbar includes an integrally formed first bent portion, second bent portion, and third bent portion; the first bent portion is perpendicularly disposed at one end of the second bent portion, the third bent portion is perpendicularly disposed at the other end of the second bent portion, and the first bent portion and the third bent portion extend in opposite directions; The first bending portion is connected to the bottom of the first switch body; the second bending portion is fixedly connected to the second fixing plate; the third bending portion of the sixth switch copper busbar is connected to the sixth copper busbar; the third bending portion of the fifth switch copper busbar is connected to the eighth copper busbar; and the third bending portion of the fourth switch copper busbar is connected to the ninth copper busbar.

8. The copper busbar connection structure of the three-wire busbar cabinet according to claim 7, characterized in that, The heights of the first bends of the fourth switch copper busbar, the fifth switch copper busbar, and the sixth switch copper busbar are all equal. The length of the second bend of the fourth switch copper busbar is less than the length of the second bend of the fifth switch copper busbar; the length of the second bend of the fifth switch copper busbar is less than the length of the second bend of the sixth switch copper busbar; The height of the third bend of the fourth switch copper busbar is less than the height of the third bend of the fifth switch copper busbar; the height of the third bend of the fifth switch copper busbar is less than the height of the third bend of the sixth switch copper busbar.

9. The copper busbar connection structure of the three-wire busbar cabinet according to claim 7, characterized in that, The second switch assembly includes a second switch body, a seventh, eighth and ninth switch copper busbars disposed on the top of the second switch body, and a tenth, eleventh and twelfth switch copper busbars disposed on the bottom of the second switch body. The eighth switch copper busbar is disposed between the seventh switch copper busbar and the ninth switch copper busbar; the eleventh switch copper busbar is disposed between the tenth switch copper busbar and the twelfth switch copper busbar; the seventh switch copper busbar is disposed close to the third switch copper busbar, and the tenth switch copper busbar is disposed close to the sixth switch copper busbar; The seventh switch copper busbar is connected to the first copper busbar; the eighth switch copper busbar is fixed to the first fixing plate and is connected to the fifth copper busbar; the ninth switch copper busbar is connected to the second copper busbar. The tenth switch copper busbar is connected to the ninth copper busbar; the eleventh switch copper busbar is connected to the eighth copper busbar; the twelfth switch copper busbar is connected to the sixth copper busbar. The tenth switch copper busbar, the eleventh switch copper busbar, and the twelfth switch copper busbar are all fixed to the second fixing plate.

10. The copper busbar connection structure of the three-wire busbar cabinet according to claim 9, characterized in that, One end of the first copper busbar is connected to the first switch copper busbar, and the other end is connected to the seventh switch copper busbar; one end of the second copper busbar is connected to the third switch copper busbar, and the other end is connected to the ninth switch copper busbar; one end of the fifth copper busbar is connected to the second switch copper busbar, and the other end is connected to the eighth switch copper busbar. One end of the sixth copper busbar is connected to the sixth switch copper busbar, and the other end is connected to the twelfth switch copper busbar; One end of the eighth copper busbar is connected to the fifth switch copper busbar, and the other end is connected to the eleventh switch copper busbar; one end of the ninth copper busbar is connected to the fourth switch copper busbar, and the other end is connected to the tenth switch copper busbar.

11. The copper busbar connection structure of the three-wire busbar cabinet according to claim 10, characterized in that, The seventh switch copper busbar is symmetrically arranged with the first switch copper busbar, and the seventh switch copper busbar has the same structure as the first switch copper busbar; The eighth switch copper busbar is symmetrically arranged with the second switch copper busbar, and the eighth switch copper busbar and the second switch copper busbar have the same structure; The ninth switch copper busbar is symmetrically arranged with the third switch copper busbar, and the ninth switch copper busbar and the third switch copper busbar have the same structure; The tenth switch copper busbar is symmetrically arranged with the fourth switch copper busbar, and the tenth switch copper busbar and the fourth switch copper busbar have the same structure; The eleventh switch copper busbar is symmetrically arranged with the fifth switch copper busbar, and the eleventh switch copper busbar and the fifth switch copper busbar have the same structure; The twelfth switch copper busbar is symmetrically arranged with the sixth switch copper busbar, and the twelfth switch copper busbar and the sixth switch copper busbar have the same structure.

12. The copper busbar connection structure of the three-wire busbar cabinet according to claim 11, characterized in that, The three-wire combiner cabinet copper busbar connection structure also includes a third fixing plate; the sixth switch copper busbar and the twelfth switch copper busbar are respectively fixedly connected to the third fixing plate; The three-wire combiner cabinet copper busbar connection structure also includes a first epoxy board, one end of which is disposed on the top of the first switch body and the other end of which is disposed on the top of the second switch body; the first switch copper busbar, the second switch copper busbar, the third switch copper busbar, the seventh switch copper busbar, the eighth switch copper busbar and the ninth switch copper busbar are all fixed on the first epoxy board; The three-wire combiner cabinet copper busbar connection structure also includes a second epoxy board. The fifth switch copper busbar and the eleventh switch copper busbar are respectively fixedly connected to one side of the second epoxy board; the sixth switch copper busbar and the twelfth switch copper busbar are respectively fixedly connected to the other side of the second epoxy board. The three-wire combiner cabinet copper busbar connection structure also includes a third epoxy board. The fourth switch copper busbar and the tenth switch copper busbar are respectively fixedly connected to one side of the third epoxy board; the fifth switch copper busbar and the eleventh switch copper busbar are respectively fixedly connected to the other side of the third epoxy board. The fifth switch copper busbar and the eleventh switch copper busbar are both disposed between the second epoxy board and the third epoxy board.

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