Copper bar connecting structure of confluence cabinet

Abstract

The utility model provides a confluence cabinet copper bar connecting structure, which is suitable for a confluence cabinet and comprises a circuit breaker, a first fixing plate, a first copper bar, a first epoxy plate, a fuse, a second epoxy plate, a second copper bar, a third copper bar, a fourth copper bar and a second fixing plate, 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 fuse wire; one end, far away from the first copper bar, of the fuse wire is connected with the second copper bar, and the second copper bar is fixed on the second epoxy plate; the third copper bar and the fourth copper bar are independently arranged at the bottom of the circuit breaker, and the fourth copper bar is fixedly connected with the second fixing plate. According to the invention, the reasonable layout of each electrical element in the cabinet body can be realized, the size of the cabinet body is reduced, the occupied space is small, and the use safety and reliability are good.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a copper bar connection structure of a combiner cabinet. Background Art

[0002] The combiner cabinet is a crucial component of the energy storage system, primarily facilitating the interaction between the AC and DC sides. The energy storage system's charging and discharging is performed through the combiner cabinet. Specifically, the power lines from the cluster management box converge at the combiner cabinet, which connects to the UPS, which in turn connects to an external power source or load. This allows the energy storage system to exchange energy with the outside world.

[0003] As the number of battery clusters increases, the number of power harnesses in the cluster management box also increases, and their weight increases, resulting in increased stress on the connection points in the junction box. Under conditions of transportation vibration, the harness connections are prone to loosening or even falling off. In severe cases, loose or falling harnesses can easily come into contact with other metals, causing short circuits and burning equipment, resulting in the failure of the energy storage system and the inability to perform normal charging and discharging.

[0004] Most of the existing combiner cabinets do not distinguish between neutral lines. Some only have 2 lines but no 3 lines, which cannot meet customer requirements. Moreover, making 3 lines compatible with 2 lines will lead to waste of busbars and increase the cost of the entire cabinet. Utility Model Content

[0005] Based on this, an embodiment of the present invention provides a copper busbar connection structure for a combiner cabinet, aiming to solve the problems that most existing combiner cabinets do not distinguish between neutral lines, some only have 2 lines but no 3 lines, and 3 lines are compatible with 2 lines, which will lead to waste of busbars and increase the cost of the entire cabinet.

[0006] To achieve the above-mentioned object, an embodiment of the present invention provides a combiner cabinet copper bar connection structure, which is applicable to a combiner cabinet and includes a circuit breaker, a first fixing plate, a first copper bar, a first epoxy plate, a fuse, a second epoxy plate, a second copper bar, a third copper bar, a fourth copper bar, and a second fixing plate;

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

[0008] The third copper bar and the fourth copper bar are independently arranged at the bottom of the circuit breaker, and the fourth copper bar is fixedly connected to the second fixing plate.

[0009] As a preferred embodiment, the first copper bar is a strip-shaped copper bar; two first copper bars are provided, and the two first copper bars are symmetrically arranged on the first epoxy board.

[0010] As a preferred embodiment, two fuses are provided, the two fuses are arranged in parallel, and the fuses are arranged in a one-to-one correspondence with the first copper busbars.

[0011] As a preferred embodiment, the second copper busbar includes an integrally arranged first vertical segment, a parallel segment, and a second vertical segment, wherein the first vertical segment is perpendicularly arranged at one end of the parallel segment, and the second vertical segment is perpendicularly arranged at the other end of the parallel segment, and the first vertical segment and the second vertical segment extend in opposite directions; the first vertical segment is connected to the fuse, and the parallel segment is arranged on the second epoxy board.

[0012] As a preferred embodiment, the parallel section is arranged parallel to the second epoxy plate; the second epoxy plate is arranged perpendicular to the first epoxy plate.

[0013] As a preferred embodiment, two second copper bars are provided, and the two second copper bars are symmetrically arranged on the second epoxy board, and the second copper bars are arranged in a one-to-one correspondence with the fuses.

[0014] As a preferred embodiment, the third copper bar is an arc-shaped copper bar, and both ends of the arc-shaped copper bar are respectively connected to the bottom of the circuit breaker.

[0015] As a preferred embodiment, the fourth copper busbar includes an integrally arranged first vertical portion, a connecting portion, and a second vertical portion, wherein the first vertical portion is perpendicularly arranged at one end of the connecting portion, the second vertical portion is perpendicularly arranged at the other end of the connecting portion, and the first vertical portion and the second vertical portion extend in opposite directions; the connecting portion is arranged on the second fixing plate, and the second vertical portion is connected to the bottom of the circuit breaker.

[0016] As a preferred embodiment, two fourth copper bars are provided, and the two fourth copper bars are arranged in parallel on the second fixing plate.

[0017] As a preferred embodiment, the first fixing plate is arranged in an "I" shape, and the circuit breaker is arranged at the center of the first fixing plate; the end corners of the first fixing plate are fixed to the combiner cabinet.

[0018] As a preferred embodiment, the combiner cabinet copper bar connection structure further includes a fifth copper bar, which is connected to the first vertical portion, and the fifth copper bar is arranged in a one-to-one correspondence with the first vertical portion.

[0019] As a preferred embodiment, the fifth copper bar is a strip-shaped copper bar; one end of the fifth copper bar is connected to the first vertical portion, and the other end is fixed to the combiner cabinet.

[0020] As a preferred embodiment, both ends of the second epoxy board are respectively provided with mounting fixtures, and the second epoxy board is fixed to the combiner cabinet through the mounting fixtures.

[0021] As a preferred embodiment, both ends of the first epoxy plate are fixedly connected to the combiner cabinet; and both ends of the second fixed plate are fixedly connected to the combiner cabinet.

[0022] Compared with the existing technology, the structure of the present application has the following technical effects: Through the structure of the present application, it is possible to achieve a reasonable layout of the various electrical components in the cabinet, optimize the cabinet, and while improving the overall aesthetics and convenience of the cabinet, reduce the volume of the cabinet, reduce the floor space, meet the use requirements of space-constrained places, and effectively enhance the safety and reliability of the cabinet during use. Through the present application, the copper busbars can be reasonably arranged, and the reasonable distribution of cables can be achieved, which can effectively optimize the wiring space, facilitate installation and maintenance, and meet the customer's use requirements for UPS without a neutral line. In addition, through the structure of the present application, the heat dissipation of each copper busbar and fuse is effectively improved, facilitating the installation and maintenance of various components in the junction box. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0024] Figure 1 This is a structural diagram of the copper bar connection structure of the combiner cabinet according to an embodiment of the present invention;

[0025] Figure 2 for Figure 1 A structural diagram of the copper busbar connection structure of the combiner cabinet from another angle;

[0026] Figure 3 for Figure 1 Schematic diagram of the use status of the copper bar connection structure of the combiner cabinet;

[0027] Figure 4 It is a structural diagram of the combiner cabinet of this application.

[0028] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, top, bottom...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0031] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0032] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element.

[0033] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features specified as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0034] This application features a simple structure, a reasonable copper busbar layout, a compact structure, simple and clear connections, and ease of implementation. It also boasts high assembly efficiency and low installation costs, optimizes the internal space layout of the combiner cabinet, and is aesthetically pleasing and simple overall, easy to maintain. It is suitable for large-scale production and effectively solves the problem of optimizing the internal space layout of the combiner cabinet. Furthermore, it can effectively address the issue of insufficient cable space affecting the electrical performance of the combiner cabinet, improve space utilization, effectively save installation time, and facilitate subsequent maintenance.

[0035] Specifically, such as Figures 1 to 2 As shown, an embodiment of the present invention provides a copper busbar connection structure for a combiner cabinet, which is applicable to a combiner cabinet A, and includes a circuit breaker 10, a first fixing plate 20, a first copper busbar 30, a first epoxy plate 40, a fuse 50, a second epoxy plate 60, a second copper busbar 70, a third copper busbar 80, a fourth copper busbar 90, and a second fixing plate 100;

[0036] The circuit breaker 10 is mounted on the first fixing plate 20; the first copper bar 30 is mounted on top of the circuit breaker 10 and fixedly connected to the first epoxy plate 40; an end of the first copper bar 30 away from the circuit breaker 10 is connected to the fuse 50; an end of the fuse 50 away from the first copper bar 30 is connected to the second copper bar 70, which is fixed to the second epoxy plate 60;

[0037] The third copper bar 80 and the fourth copper bar 90 are independently disposed at the bottom of the circuit breaker 10 , and the fourth copper bar 90 is fixedly connected to the second fixing plate 100 .

[0038] As a preferred embodiment, the first copper bar 30 is a strip-shaped copper bar; two first copper bars 30 are provided, and the two first copper bars 30 are symmetrically arranged on the first epoxy board 40 .

[0039] As a preferred embodiment, two fuses 50 are provided, the two fuses 50 are arranged in parallel, and the fuses 50 are arranged in a one-to-one correspondence with the first copper busbars 30 .

[0040] As a preferred embodiment, Figure 1As 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 perpendicularly disposed at one end of the parallel section 72, and the second vertical section 73 is perpendicularly disposed at the other end of the parallel section 71. The first vertical section 71 and the second vertical section 73 extend in opposite directions. The first vertical section 71 is connected to the fuse 50, and the parallel section 72 is disposed on the second epoxy board 60. This arrangement positions the first vertical section 71, the parallel section 72, and the second vertical section 73 on different planes, facilitating connection and saving space. It also provides good connection stability and a neat and aesthetically pleasing overall appearance. Furthermore, it effectively alleviates the problem of insufficient cable space affecting the electrical performance of the combiner cabinet.

[0041] As a preferred embodiment, the parallel section 72 is arranged parallel to the second epoxy plate 60; the second epoxy plate 60 is arranged perpendicular to the first epoxy plate 40. Thus, the plane of the parallel section 72 is parallel to the plane of the second epoxy plate 60, and the plane of the second epoxy plate 60 is perpendicular to the plane of the first epoxy plate 40. This facilitates the installation and connection of various components and effectively improves space utilization.

[0042] As a preferred embodiment, two second copper bars 70 are provided, and the two second copper bars 70 are symmetrically arranged on the second epoxy board 60 , and the second copper bars 70 are arranged in a one-to-one correspondence with the fuses 50 .

[0043] As a preferred embodiment, the third copper bar 80 is an arc-shaped copper bar, and both ends of the arc-shaped copper bar are respectively connected to the bottom of the circuit breaker 10.

[0044] As a preferred embodiment, 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 perpendicularly disposed at one end of the connecting portion 92, and the second vertical portion 93 is perpendicularly disposed at the other end of the connecting portion 92. The first vertical portion 91 and the second vertical portion 93 extend 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 positions the first vertical portion 91, the connecting portion 92, and the second vertical portion 93 on different planes, facilitating connection and saving space. It also provides good connection stability and a neat and aesthetically pleasing overall appearance. Furthermore, it effectively alleviates the problem of insufficient cable space affecting the electrical performance of the combiner cabinet.

[0045] As a preferred embodiment, two fourth copper bars 90 are provided, and the two fourth copper bars 90 are arranged in parallel on the second fixing plate 100 .

[0046] In this embodiment, the second and fourth copper bars are integrated, facilitating assembly and conserving connection space. This improves assembly and disassembly efficiency while also minimizing the risk of cable bending and impacting electrical performance due to insufficient space. A 630A-750VDC-4P molded case circuit breaker can be used as the circuit breaker.

[0047] In this application, the parallel section 72 and the connecting portion 92 extend horizontally in opposite directions, and the connecting portion 92 is longer than the parallel section 72. This arrangement facilitates connection and saves space, provides good connection stability, and creates an overall aesthetically pleasing and neat design. It also effectively alleviates the problem of insufficient cable space affecting the electrical performance of the combiner cabinet.

[0048] As a preferred embodiment, the first fixing plate 20 is arranged in an "I" shape, and the circuit breaker 10 is arranged 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.

[0049] As a preferred embodiment, the combiner cabinet copper bar connection structure further includes a fifth copper bar 110 , which is connected to the first vertical portion 91 , and the fifth copper bar 110 and the first vertical portion 91 are arranged in a one-to-one correspondence.

[0050] As a preferred embodiment, the fifth copper bar 110 is a strip-shaped copper bar; one end of the fifth copper bar 110 is connected to the first vertical portion 91 , and the other end is fixed to the combiner cabinet.

[0051] As a preferred embodiment, both ends of the second epoxy plate 60 are respectively provided with mounting fixtures 61 , and the second epoxy plate 60 is fixed to the combiner cabinet A through the mounting fixtures 61 .

[0052] As a preferred embodiment, both ends of the first epoxy plate 40 are fixedly connected to the combiner cabinet A respectively; and both ends of the second fixing plate 100 are fixedly connected to the combiner cabinet A respectively.

[0053] like Figures 3 and 4As shown, in the embodiment of the present application, the junction cabinet (630A-2 line (positive and negative) junction cabinet, size is 600*1000*2000mm, protection level is IP21. The line entry mode is upper entry and upper outlet, and the bottom plate is designed with a knock-out hole compatible with the lower outlet.) 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, the side of the cabinet body is installed with a side door, the upper part of the interior of the cabinet body is provided with a junction bin, the lower part of the interior of the cabinet body is provided with a fixed installation area, the inner sides of the cabinet body (1) are symmetrically provided with guide rails A1 and fixed installation plates A2, the first epoxy plate, the second epoxy plate, the first fixed plate and the second fixed plate are fixed to the guide rails A1 or fixed to the installation plate A2 according to actual needs, so that the copper busbar connection structure of the junction cabinet of the present application is partially accommodated in the junction bin and partially accommodated in the fixed installation area, with high space utilization. Each copper busbar of the copper busbar connection structure of the junction cabinet supports front maintenance, which is convenient for maintenance.

[0054] The combiner cabinet's top panel can be equipped with an optional wiring box for incoming cables, or it can be connected directly to the customer's wiring trough. The input cables are connected to the second copper busbar, and the second epoxy plate is secured to the combiner cabinet's rails using mounting brackets. The 1, 2, and 3P terminals of the circuit breaker are connected in series via the third copper busbar; the fifth copper busbar connects to the positive and negative terminals of the customer's UPS, respectively. The negative terminal of the combiner cabinet is connected to the first copper busbar. The combiner cabinet's top panel features corresponding locations for installed coils and knockout holes to accommodate top-in and top-out cables. A winding beam is installed inside the combiner cabinet to facilitate cable staggering and securing, resulting in an aesthetically pleasing and simple design.

[0055] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the utility model concept, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A copper busbar connection structure for a combiner cabinet, suitable for a combiner cabinet, characterized in that: It includes a circuit breaker, a first fixing plate, a first copper bar, a first epoxy plate, a fuse, a second epoxy plate, a second copper bar, a third copper bar, a fourth copper bar and a second fixing plate; The circuit breaker is mounted on the first fixing plate; the first copper bar is mounted on the top of the circuit breaker and is fixedly connected to the first epoxy plate; an end of the first copper bar away from the circuit breaker is connected to the fuse; an end of the fuse away from the first copper bar is connected to the second copper bar, and the second copper bar is fixed to the second epoxy plate; The third copper bar and the fourth copper bar are independently arranged at the bottom of the circuit breaker, and the fourth copper bar is fixedly connected to the second fixing plate.

2. The copper busbar connection structure of the combiner cabinet according to claim 1, characterized in that: The first copper bar is a strip-shaped copper bar; two first copper bars are provided, and the two first copper bars are symmetrically arranged on the first epoxy board; There are two fuses provided, the two fuses are arranged in parallel, and the fuses are arranged in a one-to-one correspondence with the first copper busbars.

3. The copper busbar connection structure of the combiner cabinet according to claim 1, characterized in that: The second copper busbar includes an integrally arranged first vertical segment, a parallel segment, and a second vertical segment. The first vertical segment is perpendicularly arranged at one end of the parallel segment, and the second vertical segment is perpendicularly arranged 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 fuse, and the parallel segment is arranged on the second epoxy board.

4. The copper busbar connection structure of the combiner cabinet according to claim 3, characterized in that: The parallel section is arranged parallel to the second epoxy plate; the second epoxy plate is arranged perpendicular to the first epoxy plate.

5. The copper busbar connection structure of the combiner cabinet according to claim 1, characterized in that: There are two second copper bars, which are symmetrically arranged on the second epoxy board, and the second copper bars are arranged in a one-to-one correspondence with the fuses; The third copper bar is an arc-shaped copper bar, and both ends of the arc-shaped copper bar are respectively connected to the bottom of the circuit breaker.

6. The copper busbar connection structure of the combiner cabinet according to claim 1, characterized in that: The fourth copper busbar includes an integrally arranged first vertical portion, a connecting portion, and a second vertical portion, wherein the first vertical portion is perpendicularly arranged at one end of the connecting portion, and the second vertical portion is perpendicularly arranged at the other end of the connecting portion, and the first vertical portion and the second vertical portion extend in opposite directions; the connecting portion is arranged on the second fixing plate, and the second vertical portion is connected to the bottom of the circuit breaker.

7. The copper busbar connection structure of a combiner cabinet according to claim 1, characterized in that: There are two fourth copper bars, and the two fourth copper bars are arranged in parallel on the second fixing plate.

8. The copper busbar connection structure of a combiner cabinet according to claim 1, characterized in that: The first fixing plate is arranged in an "I" shape, and the circuit breaker is arranged at the center of the first fixing plate; the end corners of the first fixing plate are fixed to the junction box.

9. The copper busbar connection structure of the combiner cabinet according to claim 6, characterized in that: The combiner cabinet copper bar connection structure further includes a fifth copper bar connected to the first vertical portion, and the fifth copper bar is disposed in a one-to-one correspondence with the first vertical portion.

10. The copper busbar connection structure of the combiner cabinet according to claim 9, characterized in that: The fifth copper bar is a strip-shaped copper bar; one end of the fifth copper bar is connected to the first vertical portion, and the other end is fixed to the combiner cabinet; Both ends of the second epoxy board are respectively provided with mounting fixtures, and the second epoxy board is fixed to the combiner cabinet through the mounting fixtures; Both ends of the first epoxy plate are fixedly connected to the combiner cabinet; both ends of the second fixed plate are fixedly connected to the combiner cabinet.

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