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 circuit breaker, a first fixing plate, a first copper bar, a first epoxy plate, a first fuse wire, a second epoxy plate, a second copper bar, a third copper bar, a fourth copper bar, a second fixing plate, an N-pole copper bar, a second fuse wire, a fifth copper bar and a sixth copper bar. The circuit breaker is arranged on the first fixing plate; the first copper bar is arranged at the top of the circuit breaker, and the first copper bar is fixedly connected with the first epoxy plate; one end, far away from the circuit breaker, of the first copper bar is connected with the first fuse; one end, far away from the first copper bar, of the first fuse wire is connected with a second copper bar, and the second copper bar is fixed on a second epoxy plate; the third copper bar and the fourth copper bar are respectively arranged at the bottom of the circuit breaker, and the fourth copper bar is fixedly connected with the second fixing plate; the N-pole copper bar is respectively connected with the circuit breaker and the second fuse; and the fifth copper bar is respectively connected with the second fuse and the sixth copper bar. The copper bar layout is reasonable, the occupied space is small, and the reliability is high.

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] The combiner cabinet is an important component of an energy storage system, primarily responsible for facilitating the exchange between the AC and DC sides. Charging and discharging of the energy storage system occur through the combiner cabinet. Specifically, the power lines from the cluster management box converge at the combiner cabinet, which is then connected to the UPS. The UPS is in turn connected to an external power source or load, allowing the energy storage system to exchange energy with the outside world through this pathway.

[0003] As the number of battery clusters increases, the power harnesses in the cluster management box also increase in number and weight, leading to increased stress on the connection points in the combiner cabinet. Under the condition of transportation vibration, the harness connections are prone to loosening or even falling off. In severe cases, loose or fallen harnesses can easily cause short circuits and burn out the equipment when they come into contact with other metals, resulting in the failure of the energy storage system and the inability to charge and discharge normally.

[0004] Most existing combiner cabinets do not distinguish between neutral lines, and some only have 2 lines and not 3 lines, which cannot meet the requirements of customers using UPS with neutral lines. Moreover, compatibility between 3 lines and 2 lines will lead to waste of busbars and increase the cost of the entire cabinet. Utility Model Content

[0005] Based on this, this utility model embodiment provides a copper busbar connection structure for a three-wire busbar cabinet, which aims to solve the problems that most existing busbar cabinets do not distinguish between the neutral wire, some only have two wires and no three wires, and the three-wire compatibility with two wires leads to the waste of busbars and increases the cost of the entire cabinet.

[0006] To achieve the above objectives, this utility model provides a copper busbar connection structure for a three-wire combiner cabinet, applicable to combiner cabinets, including a circuit breaker, a first fixing plate, a first copper busbar, a first epoxy board, a first fuse, a second epoxy board, a second copper busbar, a third copper busbar, a fourth copper busbar, a second fixing plate, an N-pole copper busbar, a second fuse, a fifth copper busbar, and a sixth copper busbar;

[0007] The circuit breaker is mounted on the first fixed plate; the first copper busbar is mounted on the top of the circuit breaker and is fixedly connected to the first epoxy board; the end of the first copper busbar away from the circuit breaker is connected to the first fuse; the end of the first fuse away from the first copper busbar is connected to the second copper busbar, and the second copper busbar is fixed to the second epoxy board.

[0008] The third copper busbar and the fourth copper busbar are each independently disposed at the bottom of the circuit breaker, and the fourth copper busbar is fixedly connected to the second fixing plate;

[0009] The N-pole copper busbar is connected to the circuit breaker and the second fuse respectively; the fifth copper busbar is connected to the second fuse and the sixth copper busbar respectively.

[0010] In a preferred embodiment, one end of the N-pole copper busbar is connected to the circuit breaker, and the other end is connected to the second fuse, and the N-pole copper busbar is fixedly connected to the first epoxy board; the N-pole copper busbar is an "L"-shaped copper busbar.

[0011] In a preferred embodiment, the three-wire busbar connection structure further includes a third fixing plate; one end of the fifth busbar is connected to the second fuse, and the other end is connected to the sixth busbar; the end of the fifth busbar near the second fuse is fixed to the third fixing plate; the fifth busbar is an "L" shaped busbar.

[0012] In a preferred embodiment, the plane containing the third fixing plate is the same plane as the plane containing the top surface of the first fixing plate. This arrangement facilitates fixing both ends of the third fixing plate to the combiner cabinet, effectively saving space.

[0013] In a preferred embodiment, the end of the N-pole copper busbar near the circuit breaker and the end of the fifth copper busbar near the sixth copper busbar extend in opposite directions; the plane of the end of the N-pole copper busbar near the second fuse and the plane of the end of the fifth copper busbar near the second fuse are the same plane.

[0014] In a preferred embodiment, the three-wire busbar connection structure further includes a fourth fixing plate, and the two ends of the sixth copper busbar are symmetrically fixed to the fourth fixing plate; the fifth copper busbar is connected to the center of the sixth copper busbar; the sixth copper busbar is a strip-shaped copper busbar.

[0015] In a preferred embodiment, the fourth fixing plate is arranged parallel to the third fixing plate; the plane on which the third fixing plate is located is the same plane as the plane on which the fourth fixing plate is located.

[0016] In a preferred embodiment, the copper busbar connection structure of the three-wire combiner cabinet further includes a seventh copper busbar and an eighth copper busbar; one end of the seventh copper busbar is connected to the circuit breaker, and the other end is connected to the eighth copper busbar.

[0017] In a preferred embodiment, the seventh copper busbar is an inverted "U" shaped copper busbar, and the length of the end of the seventh copper busbar near the eighth copper busbar is greater than the length of the end of the seventh copper busbar near the circuit breaker; the end of the seventh copper busbar near the circuit breaker is located between the first copper busbar and the N-pole copper busbar; the eighth copper busbar is a strip-shaped copper busbar, one end of which is connected to the seventh copper busbar, and the other end is fixed to the combiner cabinet.

[0018] In a preferred embodiment, the first copper busbar is a strip-shaped copper busbar; two first copper busbars are provided, and the two first copper busbars are symmetrically arranged on the first epoxy board; the end of the N-pole copper busbar near the circuit breaker is located between the two first copper busbars.

[0019] In a preferred embodiment, there are two first fuses arranged in parallel, and each first fuse corresponds to a first copper busbar.

[0020] In a preferred embodiment, the second copper busbar includes an integrally formed first vertical segment, a parallel segment, and a second vertical segment. The first vertical segment is vertically disposed at one end of the parallel segment, and the second vertical segment is vertically disposed at the other end of the parallel segment. The first vertical segment and the second vertical segment extend in opposite directions. The first vertical segment is connected to the first fuse, and the parallel segment is disposed on the second epoxy board.

[0021] In a preferred embodiment, the parallel segment is arranged parallel to the second epoxy board; the second epoxy board is arranged perpendicular to the first epoxy board.

[0022] In a preferred embodiment, two second copper busbars are provided, which are symmetrically arranged on the second epoxy plate, and the second copper busbars correspond one-to-one with the first fuse.

[0023] In a preferred embodiment, the third copper busbar is an arc-shaped copper busbar, with both ends of the arc-shaped copper busbar connected to the bottom of the circuit breaker.

[0024] In a preferred embodiment, the fourth copper busbar includes an integrally formed first vertical portion, a connecting portion, and a second vertical portion. The first vertical portion is vertically disposed at one end of the connecting portion, and the second vertical portion is vertically disposed at the other end of the connecting portion. The first vertical portion and the second vertical portion extend in opposite directions. The connecting portion is disposed on the second fixing plate, and the second vertical portion is connected to the bottom of the circuit breaker.

[0025] In a preferred embodiment, two fourth copper busbars are provided, and the two fourth copper busbars are arranged in parallel on the second fixing plate.

[0026] In a preferred embodiment, the first fixing plate is arranged in an "I" shape, and the circuit breaker is located at the center of the first fixing plate; the end corners of the first fixing plate are fixed to the combiner cabinet.

[0027] In a preferred embodiment, the busbar connection structure of the combiner cabinet further includes a ninth copper busbar, which is connected to the first vertical part, and the ninth copper busbar and the first vertical part are arranged in a one-to-one correspondence.

[0028] In a preferred embodiment, the ninth copper busbar is a strip-shaped copper busbar; one end of the ninth copper busbar is connected to the first vertical part, and the other end is fixed to the combiner cabinet.

[0029] In a preferred embodiment, the second epoxy board is provided with mounting fasteners at both ends, and the second epoxy board is fixed to the junction box by the mounting fasteners.

[0030] In a preferred embodiment, both ends of the first epoxy board are fixedly connected to the manifold cabinet; both ends of the second fixing plate are fixedly connected to the manifold cabinet.

[0031] Compared to existing technologies, the structure of this application has the following technical advantages: This structure enables a rational layout of various electrical components within the cabinet, optimizing the cabinet design. While improving the overall aesthetics and convenience of the cabinet, it also reduces its size and footprint, meeting the requirements of space-constrained environments. Furthermore, it effectively enhances the safety and reliability of the cabinet during use. This application allows for a rational layout of copper busbars, enabling proper cable distribution and effectively optimizing cabling space. Installation and maintenance are convenient, meeting the requirements of customers using UPS systems with neutral cables. Moreover, this structure effectively improves the heat dissipation of each copper busbar, the first fuse, and the second fuse, facilitating the installation and maintenance of components within the combiner cabinet. Attached Figure Description

[0032] 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.

[0033] 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;

[0034] Figure 2 for Figure 1 A schematic diagram of the copper busbar connection structure of the three-line combiner cabinet from another angle;

[0035] Figure 3 for Figure 1 A schematic diagram of the copper busbar connection structure of the combiner cabinet in use;

[0036] Figure 4 This is a schematic diagram of the combiner cabinet in this application.

[0037] 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

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] This application features a simple structure, a reasonable and compact copper busbar layout, and straightforward connections, making it easy to implement, efficient in assembly, and cost-effective in installation. 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. Furthermore, it effectively improves the electrical performance of combiner cabinets affected by insufficient cable space, enhances space utilization, saves installation time, and facilitates subsequent maintenance.

[0044] Specifically, such as Figures 1 to 2 As shown, one embodiment of this utility model provides a copper busbar connection structure for a combiner cabinet, applicable to combiner cabinet A, including a circuit breaker 10, a first fixing plate 20, a first copper busbar 30, a first epoxy plate 40, a first fuse 50, a second epoxy plate 60, a second copper busbar 70, a third copper busbar 80, a fourth copper busbar 90, a second fixing plate 100, an N-pole copper busbar 110, a second fuse 120, a fifth copper busbar 130, and a sixth copper busbar 140;

[0045] The circuit breaker 10 is mounted on the first fixed plate 20; the first copper busbar 30 is mounted on the top of the circuit breaker 10 and is fixedly connected to the first epoxy board 40; the end of the first copper busbar 30 away from the circuit breaker 10 is connected to the first fuse 50; the end of the first fuse 50 away from the first copper busbar 30 is connected to the second copper busbar 70, and the second copper busbar 70 is fixed to the second epoxy board 60.

[0046] The third copper busbar 80 and the fourth copper busbar 90 are respectively independently disposed at the bottom of the circuit breaker 10, and the fourth copper busbar 90 is fixedly connected to the second fixing plate 100.

[0047] The N-pole copper busbar 110 is connected to the circuit breaker 10 and the second fuse 120 respectively; the fifth copper busbar 130 is connected to the second fuse 120 and the sixth copper busbar 140 respectively.

[0048] By setting up the N-pole copper busbar 110, the second fuse 120, the fifth copper busbar 130, and the sixth copper busbar 140, the wiring space can be effectively optimized, installation and maintenance are convenient, and the requirements of customers using UPS with neutral lines can be met.

[0049] In a preferred embodiment, one end of the N-pole copper busbar 110 is connected to the circuit breaker 10, and the other end is connected to the second fuse 120, and the N-pole copper busbar 110 is fixedly connected to the first epoxy board 40; the N-pole copper busbar 110 is an "L"-shaped copper busbar.

[0050] In a preferred embodiment, the three-wire busbar connection structure further includes a third fixing plate 150; one end of the fifth copper busbar 130 is connected to the second fuse 120, and the other end is connected to the sixth copper busbar 140; one end of the fifth copper busbar 130 near the second fuse 120 is fixed to the third fixing plate 150; the fifth copper busbar 130 is an "L" shaped copper busbar.

[0051] In a preferred embodiment, the plane containing the third fixing plate 150 is the same plane as the plane containing the top surface of the first fixing plate 20. This arrangement facilitates fixing both ends of the third fixing plate 150 to the combiner cabinet A, effectively saving space.

[0052] In a preferred embodiment, the end of the N-pole copper busbar 110 near the circuit breaker 10 and the end of the fifth copper busbar 130 near the sixth copper busbar 140 extend in opposite directions; the plane containing the end of the N-pole copper busbar 110 near the second fuse 120 and the plane containing the end of the fifth copper busbar 130 near the second fuse 120 are on the same plane. 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 combiner cabinet.

[0053] In a preferred embodiment, the three-wire busbar connection structure further includes a fourth fixing plate 160, and the two ends of the sixth copper busbar 140 are symmetrically fixed on the fourth fixing plate 160; the fifth copper busbar 130 is connected to the center of the sixth copper busbar 140; the sixth copper busbar 140 is a strip-shaped copper busbar.

[0054] In a preferred embodiment, the fourth fixing plate 160 is arranged parallel to the third fixing plate 150; the plane on which the third fixing plate 150 is located is the same plane as the plane on which the fourth fixing plate 160 is located. This arrangement facilitates connection and saves connection space, while also providing good connection stability and a neat and aesthetically pleasing overall appearance. Furthermore, it effectively addresses the issue of insufficient cable space affecting the electrical performance of the combiner cabinet.

[0055] In a preferred embodiment, the copper busbar connection structure of the three-wire combiner cabinet further includes a seventh copper busbar 170 and an eighth copper busbar 180; one end of the seventh copper busbar 170 is connected to the circuit breaker 10, and the other end is connected to the eighth copper busbar 180.

[0056] In a preferred embodiment, the seventh copper busbar 170 is an inverted "U" shaped copper busbar, and the length of the end of the seventh copper busbar 170 near the eighth copper busbar 180 is greater than the length of the end of the seventh copper busbar 170 near the circuit breaker 10; the end of the seventh copper busbar 170 near the circuit breaker 10 is located between the first copper busbar 30 and the N-pole copper busbar 110; the eighth copper busbar 180 is a strip-shaped copper busbar, one end of the eighth copper busbar 180 is connected to the seventh copper busbar 170, and the other end is fixed to the combiner cabinet A.

[0057] In this embodiment, the end of the seventh copper busbar 170 closest to the circuit breaker 10 is fixedly connected to the first epoxy board 40, and the end of the seventh copper busbar 170 closest to the eighth copper busbar 180 is fixedly connected to the first fixing plate 20. This effectively optimizes wiring space, facilitates installation and maintenance, and meets the customer's requirements for UPS systems with a neutral wire.

[0058] In a preferred embodiment, the first copper busbar 30 is a strip-shaped copper busbar; there are two first copper busbars 30, which are symmetrically arranged on the first epoxy board 40; the N-pole copper busbar 110 is located between the two first copper busbars 30 at one end near the circuit breaker 10.

[0059] In a preferred embodiment, two first fuses 50 are provided, the two first fuses 50 are arranged in parallel, and the first fuses 50 are arranged in a one-to-one correspondence with the first copper busbars 30.

[0060] As a preferred embodiment, such as Figure 1 As shown, the second copper busbar 70 includes an integrally formed first vertical section 71, a parallel section 72, and a second vertical section 73. The first vertical section 71 is vertically disposed at one end of the parallel section 72, and the second vertical section 73 is vertically disposed at the other end of the parallel section 71, with the first vertical section 71 and the second vertical section 73 extending in opposite directions. The first vertical section 71 is connected to the first fuse 50, and the parallel section 72 is disposed on the second epoxy board 60. This arrangement allows the first vertical section 71, the parallel section 72, and the second vertical section 73 to be located on different planes, facilitating connection and saving connection space, while also providing good connection stability and an overall neat and aesthetically pleasing appearance. Simultaneously, it effectively improves the problem of insufficient cable space affecting the electrical performance of the busbar cabinet.

[0061] In a preferred embodiment, the parallel segment 72 is arranged parallel to the second epoxy board 60; the second epoxy board 60 is arranged perpendicular to the first epoxy board 40. In this way, the plane containing the parallel segment 72 is parallel to the plane containing the second epoxy board 60, and the plane containing the second epoxy board 60 is perpendicular to the plane containing the first epoxy board 40, which facilitates the installation and connection of the components and effectively improves space utilization.

[0062] In a preferred embodiment, two second copper busbars 70 are provided, and the two second copper busbars 70 are symmetrically arranged on the second epoxy plate 60, and the second copper busbars 70 correspond one-to-one with the first fuse 50.

[0063] In a preferred embodiment, the third copper busbar 80 is an arc-shaped copper busbar, and the two ends of the arc-shaped copper busbar are respectively connected to the bottom of the circuit breaker 10.

[0064] As a preferred embodiment, such as Figure 1 As shown, the fourth copper busbar 90 includes an integrally formed first vertical portion 91, a connecting portion 92, and a second vertical portion 93. The first vertical portion 91 is vertically disposed at one end of the connecting portion 92, and the second vertical portion 93 is vertically disposed at the other end of the connecting portion 92, with the first vertical portion 91 and the second vertical portion 93 extending in opposite directions. The connecting portion 92 is disposed on the second fixing plate 100, and the second vertical portion 93 is connected to the bottom of the circuit breaker 10. This arrangement allows the first vertical portion 91, the connecting portion 92, and the second vertical portion 93 to be located on different planes, facilitating connection and saving connection space, while also providing good connection stability and an overall neat and aesthetically pleasing appearance. Simultaneously, it effectively improves the problem of insufficient cable space affecting the electrical performance of the busbar cabinet.

[0065] In a preferred embodiment, two fourth copper busbars 90 are provided, and the two fourth copper busbars 90 are arranged in parallel on the second fixing plate 100.

[0066] In this embodiment, both the second and fourth copper busbars are integrated, facilitating assembly and saving connection space, improving assembly and disassembly efficiency, and effectively reducing the risk of cable bending due to insufficient space, which could affect electrical performance. A 630A-750VDC-4P molded case circuit breaker can be selected.

[0067] In this application, the parallel segment 72 and the connecting portion 92 extend horizontally in opposite directions, and the length of the connecting portion 92 is greater than the length of the parallel segment 72. 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 first fixing plate 20 is arranged in an "I" shape, and the circuit breaker 10 is disposed at the center of the first fixing plate 20; the end corners of the first fixing plate 20 are fixed to the combiner cabinet A.

[0069] In a preferred embodiment, the busbar connection structure of the combiner cabinet further includes a ninth copper busbar 190, which is connected to the first vertical part 91, and the ninth copper busbar 190 and the first vertical part 91 are arranged in a one-to-one correspondence.

[0070] In a preferred embodiment, the ninth copper busbar 190 is a strip-shaped copper busbar; one end of the ninth copper busbar 190 is connected to the first vertical part 91, and the other end is fixed to the combiner cabinet.

[0071] In a preferred embodiment, the second epoxy board 60 is provided with mounting fasteners 61 at both ends, and the second epoxy board 60 is fixed to the junction box A by the mounting fasteners 61.

[0072] In a preferred embodiment, both ends of the first epoxy board 40 are fixedly connected to the manifold A; both ends of the second fixing plate 100 are fixedly connected to the manifold A.

[0073] like Figures 3 to 4 As shown in the embodiment of this application, the combiner cabinet (630A-3 lines (positive, N, negative), with dimensions of 600*1000*2000mm and a protection rating of IP21. The incoming line method is top-in and top-out, and the bottom plate is designed with knock-out holes to accommodate bottom-out.) includes a cabinet body. The front of the cabinet body is hinged with a front door, the back of the cabinet body is installed with a rear door, and the side of the cabinet body is installed with a side door. The upper part of the cabinet body is provided with a combiner compartment, and the lower part of the cabinet body is provided with a fixed installation area. The two sides of the cabinet body (1) are symmetrically equipped with guide rails A1 and fixed installation plates A2. The first epoxy board, the second epoxy board, the first fixed plate, the second fixed plate, the third fixed plate, and the fourth fixed plate are fixed to the guide rails or the installation plates according to actual needs, so that part of the copper busbar connection structure of the combiner cabinet of this application is accommodated in the combiner compartment and part is accommodated in the fixed installation area, which has a high space utilization rate. Each copper busbar of the combiner cabinet copper busbar connection structure supports front maintenance, which is convenient for maintenance.

[0074] 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 input cables connect to the second copper busbar, and the second epoxy board is fixed to the combiner cabinet's guide rail using mounting hardware. Circuit breaker pins 1 and 2 are connected in series via the third copper busbar; the eighth copper busbar connects to the customer's UPS positive terminal. The neutral line (N) connects to the N-pole copper busbar, which connects to the circuit breaker's 3-pole. Below the circuit breaker, one of the fourth copper busbars connects to a ninth copper busbar, which connects to the N-line output. The combiner cabinet's negative terminal connects to the first copper busbar, which connects to the circuit breaker's 4-pole. Below the circuit breaker, another fourth copper busbar connects to another ninth copper busbar, which connects to the customer's UPS negative terminal. The top plate of the combiner cabinet has mounting coils and knock-out holes at corresponding positions to accommodate top-entry and top-outlet cables. The combiner cabinet's interior features a cable winding beam for easy cable routing and securing, resulting in a sleek and aesthetically pleasing design.

[0075] 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, suitable for combiner cabinets, characterized in that, It includes a circuit breaker, a first fixed plate, a first copper busbar, a first epoxy plate, a first fuse, a second epoxy plate, a second copper busbar, a third copper busbar, a fourth copper busbar, a second fixed plate, an N-pole copper busbar, a second fuse, a fifth copper busbar, and a sixth copper busbar; The circuit breaker is mounted on the first fixed plate; the first copper busbar is mounted on the top of the circuit breaker and is fixedly connected to the first epoxy board; the end of the first copper busbar away from the circuit breaker is connected to the first fuse; the end of the first fuse away from the first copper busbar is connected to the second copper busbar, and the second copper busbar is fixed to the second epoxy board. The third copper busbar and the fourth copper busbar are each independently disposed at the bottom of the circuit breaker, and the fourth copper busbar is fixedly connected to the second fixing plate; The N-pole copper busbar is connected to the circuit breaker and the second fuse respectively; the fifth copper busbar is connected to the second fuse and the sixth copper busbar respectively.

2. The copper busbar connection structure of the three-wire busbar cabinet according to claim 1, characterized in that, One end of the N-pole copper busbar is connected to the circuit breaker, and the other end is connected to the second fuse; the N-pole copper busbar is fixedly connected to the first epoxy board; the N-pole copper busbar is an "L"-shaped copper busbar.

3. The copper busbar connection structure of the three-wire busbar cabinet according to claim 1, characterized in that, The three-wire combiner cabinet copper busbar connection structure also includes a third fixing plate; one end of the fifth copper busbar is connected to the second fuse, and the other end is connected to the sixth copper busbar; the end of the fifth copper busbar near the second fuse is fixed to the third fixing plate; the fifth copper busbar is an "L" shaped copper busbar.

4. The copper busbar connection structure of the three-wire busbar cabinet according to claim 3, characterized in that, The plane on which the third fixing plate is located is the same plane as the plane on which the top surface of the first fixing plate is located.

5. The copper busbar connection structure of the three-wire busbar cabinet according to claim 1, characterized in that, The N-pole copper busbar near the circuit breaker extends in the opposite direction to the fifth copper busbar near the sixth copper busbar; the plane of the N-pole copper busbar near the second fuse is the same plane as the plane of the fifth copper busbar near the second fuse.

6. The copper busbar connection structure of the three-wire busbar cabinet according to claim 3, characterized in that, The three-wire combiner cabinet copper busbar connection structure also includes a fourth fixing plate, and the two ends of the sixth copper busbar are symmetrically fixed to the fourth fixing plate; the fifth copper busbar is connected to the center of the sixth copper busbar; the sixth copper busbar is a strip-shaped copper busbar.

7. The copper busbar connection structure of the three-wire busbar cabinet according to claim 6, characterized in that, The fourth fixing plate is arranged parallel to the third fixing plate; the plane on which the third fixing plate is located is the same plane as the plane on which the fourth fixing plate is located.

8. The copper busbar connection structure of the three-wire busbar cabinet according to claim 1, characterized in that, The copper busbar connection structure of the three-wire combiner cabinet also includes a seventh copper busbar and an eighth copper busbar; one end of the seventh copper busbar is connected to the circuit breaker, and the other end is connected to the eighth copper busbar.

9. The copper busbar connection structure of the three-wire busbar cabinet according to claim 8, characterized in that, The seventh copper busbar is an inverted "U" shaped copper busbar, and the length of the end of the seventh copper busbar near the eighth copper busbar is greater than the length of the end of the seventh copper busbar near the circuit breaker; the end of the seventh copper busbar near the circuit breaker is located between the first copper busbar and the N-pole copper busbar; the eighth copper busbar is a strip-shaped copper busbar, one end of which is connected to the seventh copper busbar, and the other end is fixed to the combiner cabinet.

10. The copper busbar connection structure of the three-wire busbar cabinet according to claim 1, characterized in that, The first copper busbar is a strip-shaped copper busbar; there are two first copper busbars, which are symmetrically arranged on the first epoxy board; the N-pole copper busbar is located between the two first copper busbars at one end near the circuit breaker; There are two first fuses, which are arranged in parallel, and each first fuse corresponds to a first copper busbar.

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