Copper bar connecting structure of two-wire confluence cabinet

Abstract

The utility model provides a two-wire 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, a fifth 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; one end, far away from the first copper bar, of the 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 is arranged at the top of the circuit breaker, and one end of the third copper bar is connected with the fourth copper bar; the fifth copper bar is arranged at the bottom of the circuit breaker, and the fifth copper bar is fixedly connected with the second fixing plate. According to the utility model, the reasonable layout of each electrical part in the cabinet body can be realized, the occupied space is small, 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 two-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] For high-voltage, high-current energy storage systems of DC 750V and above, there are very few DC circuit breakers available on the market, with only a few imported brands and limited models. However, the delivery time and price fluctuations of imported components are uncertain, making it difficult to meet actual usage needs. Furthermore, while ensuring safety performance, it is difficult to reduce the selection difficulty of existing combiner cabinets, and the high manufacturing cost of existing combiner cabinets leads to a high overall cost. Utility Model Content

[0004] Based on this, this utility model embodiment provides a copper busbar connection structure for a two-wire combiner cabinet, which aims to solve the problems of most existing combiner cabinets not distinguishing the neutral line, 3-wire compatibility with 2-wire leading to busbar waste, high overall cabinet cost, difficulty in selection, and difficulty in meeting customer usage needs.

[0005] To achieve the above objectives, this utility model provides a copper busbar connection structure for a two-wire combiner cabinet, applicable to combiner cabinets, including a circuit breaker, a first fixing plate, a first copper busbar, a first epoxy board, a fuse, a second epoxy board, a second copper busbar, a third copper busbar, a fourth copper busbar, a fifth copper busbar, and a second fixing plate;

[0006] 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 fuse; the end of the 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.

[0007] The third copper busbar is disposed at the top of the circuit breaker, and one end of the third copper busbar is connected to the fourth copper busbar; the fifth copper busbar is disposed at the bottom of the circuit breaker, and the fifth copper busbar is fixedly connected to the second fixing plate.

[0008] In a preferred embodiment, the copper busbar connection structure of the two-wire combiner cabinet further includes a third fixing plate, and the two ends of the fourth copper busbar are symmetrically arranged on the third fixing plate; one end of the third copper busbar is connected to the center of the fourth copper busbar.

[0009] 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 third copper busbar near the circuit breaker is located between the two first copper busbars.

[0010] In a preferred embodiment, two fuses are provided, which are arranged in parallel and correspond one-to-one with the first copper busbar.

[0011] 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 fuse, and the parallel segment is disposed on the second epoxy board.

[0012] 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.

[0013] 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 fuses.

[0014] In a preferred embodiment, the third 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, with the first vertical portion and the second vertical portion extending in opposite directions. The first vertical portion is connected to the fourth copper busbar, the connecting portion is fixed to the first fixing plate, and the second vertical portion is connected to the top of the circuit breaker and fixed to the first epoxy board.

[0015] In a preferred embodiment, the fourth copper busbar is a strip-shaped copper busbar; the length of the first vertical portion is greater than the width of the fourth copper busbar.

[0016] 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.

[0017] In a preferred embodiment, the fifth copper busbar is an integrated multi-segment copper busbar.

[0018] In a preferred embodiment, the copper busbar connection structure of the two-wire combiner cabinet further includes a sixth copper busbar, which is a strip-shaped copper busbar and is connected to the fifth copper busbar.

[0019] 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.

[0020] 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.

[0021] 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 without a neutral cable. It allows for the selection of the appropriate combiner cabinet based on the customer's required power flow, reducing the manufacturing cost of the combiner cabinet. Moreover, this structure effectively improves the heat dissipation of each copper busbar and fuse, facilitating the installation and maintenance of components within the combiner cabinet. Attached Figure Description

[0022] 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.

[0023] Figure 1 This is a schematic diagram of the copper busbar connection structure of a two-wire combiner cabinet according to an embodiment of the present invention;

[0024] Figure 2 for Figure 1 A schematic diagram of the copper busbar connection structure of the two-line combiner cabinet from another angle;

[0025] Figure 3 for Figure 1 A schematic diagram of the copper busbar connection structure of the two-line combiner cabinet in use;

[0026] Figure 4 This is a schematic diagram of the combiner cabinet in this application.

[0027] 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

[0028] 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.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] Specifically, such as Figures 1 to 2 As shown, one embodiment of this utility model provides a copper busbar connection structure for a two-wire 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 board 40, a fuse 50, a second epoxy board 60, a second copper busbar 70, a third copper busbar 80, a fourth copper busbar 90, a fifth copper busbar 100, and a second fixing plate 110;

[0035] 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 fuse 50; the end of the 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.

[0036] The third copper busbar 80 is disposed at the top of the circuit breaker 10, and one end of the third copper busbar 80 is connected to the fourth copper busbar 90; the fifth copper busbar 100 is disposed at the bottom of the circuit breaker 10, and the fifth copper busbar 100 is fixedly connected to the second fixing plate 110.

[0037] In a preferred embodiment, the copper busbar connection structure of the two-line combiner cabinet further includes a third fixing plate 120, and the two ends of the fourth copper busbar 90 are symmetrically arranged on the third fixing plate 120; one end of the third copper busbar 80 is connected to the center of the fourth copper busbar 90.

[0038] 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 third copper busbar 80 is located between the two first copper busbars 30 at one end near the circuit breaker 10.

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

[0040] 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 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.

[0041] 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.

[0042] 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 are arranged in a one-to-one correspondence with the fuses 50.

[0043] As a preferred embodiment, such as Figure 1As shown, the third copper busbar 80 includes an integrally formed first vertical portion 81, a connecting portion 82, and a second vertical portion 83. The first vertical portion 81 is vertically disposed at one end of the connecting portion 82, and the second vertical portion 83 is vertically disposed at the other end of the connecting portion 82, with the first vertical portion 81 and the second vertical portion 83 extending in opposite directions. The first vertical portion 81 is connected to the fourth copper busbar 90, the connecting portion 82 is fixed to the first fixing plate 20, and the second vertical portion 83 is connected to the top of the circuit breaker 10 and fixed to the first epoxy board 40. This arrangement allows the first vertical portion 81, the connecting portion 82, and the second vertical portion 83 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.

[0044] In a preferred embodiment, the fourth copper busbar 90 is a strip-shaped copper busbar; the length of the first vertical portion 81 is greater than the width of the fourth copper busbar 90.

[0045] In this embodiment, both the second and third 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. The circuit breaker can be an 800A-750VDC-3P molded case circuit breaker.

[0046] In this application, the parallel segment 72 and the connecting portion 82 extend horizontally in the same direction, and the length of the connecting portion 82 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 problem of insufficient cable space affecting the electrical performance of the combiner cabinet.

[0047] 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.

[0048] In a preferred embodiment, the fifth copper busbar 100 is an integrated multi-segment copper busbar. This design 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.

[0049] In a preferred embodiment, the copper busbar connection structure of the two-wire combiner cabinet further includes a sixth copper busbar 130, which is a strip-shaped copper busbar and is connected to the fifth copper busbar 100.

[0050] 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.

[0051] 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 110 are fixedly connected to the manifold A.

[0052] like Figures 3 to 4 As shown in the embodiment of this application, the combiner cabinet (an 800A-2 line (positive and negative) combiner cabinet with dimensions of 600*1000*2000mm and a protection level of IP21. The incoming line method is top incoming and top outgoing, and the bottom plate is designed with knock-out holes to accommodate bottom outgoing) 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, and the second fixed plate are fixed to the guide rails A1 or the installation plate A2 according to actual needs, so that part of the copper busbar connection structure of the two-line 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 two-line combiner cabinet copper busbar connection structure supports front maintenance, which is convenient for maintenance.

[0053] 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 cable connects to one of the second copper busbars, and the second epoxy board is fixed to the combiner cabinet's rails using mounting fasteners. The second copper busbar connects to one of the fuses, which in turn connects to one of the first copper busbars. This first copper busbar is fixed to the first epoxy board and connects to the circuit breaker 1P. The third copper busbar connects to the circuit breaker 2P, and the fourth copper busbar connects to the third. The fourth copper busbar connects to the customer's UPS positive terminal. The circuit breaker is fixed to the first mounting plate, which is also fixed to the cabinet's rails. The negative terminal connects to another second copper busbar, which connects to another fuse, which in turn connects to another first copper busbar. This first copper busbar connects to the circuit breaker 3P, then the circuit breaker connects to the fifth copper busbar, which in turn connects to the sixth copper busbar, which connects to the customer's UPS negative terminal. Both the fifth and sixth copper busbars are fixed to the side rails of the cabinet. The top panel of the combiner cabinet has corresponding installation coils and knock-out holes to accommodate top-entry and top-outlet cables; the inside of the combiner cabinet is equipped with a cable winding beam to facilitate cable staggering and fixing, and the overall design is aesthetically pleasing and simple.

[0054] 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 two-wire combiner cabinet, suitable for combiner cabinets, characterized in that, It includes a circuit breaker, a first fixing plate, a first copper busbar, a first epoxy board, a fuse, a second epoxy board, a second copper busbar, a third copper busbar, a fourth copper busbar, a fifth copper busbar, and a second fixing plate; 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 fuse; the end of the 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 is disposed at the top of the circuit breaker, and one end of the third copper busbar is connected to the fourth copper busbar; the fifth copper busbar is disposed at the bottom of the circuit breaker, and the fifth copper busbar is fixedly connected to the second fixing plate.

2. The copper busbar connection structure of the two-wire combiner cabinet according to claim 1, characterized in that, The copper busbar connection structure of the two-line combiner cabinet also includes a third fixing plate, and the two ends of the fourth copper busbar are symmetrically arranged on the third fixing plate; one end of the third copper busbar is connected to the center of the fourth copper busbar.

3. The copper busbar connection structure of the two-wire combiner 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 end of the third copper busbar near the circuit breaker is located between the two first copper busbars. There are two fuses, which are arranged in parallel and correspond one-to-one with the first copper busbar.

4. The copper busbar connection structure of the two-wire combiner cabinet according to claim 1, characterized in that, The second copper busbar includes an integrally formed first vertical section, a parallel section, and a second vertical section. The first vertical section is vertically disposed at one end of the parallel section, and the second vertical section is vertically disposed at the other end of the parallel section. The first vertical section and the second vertical section extend in opposite directions. The first vertical section is connected to the fuse, and the parallel section is disposed on the second epoxy board.

5. The copper busbar connection structure of the two-wire combiner cabinet according to claim 4, characterized in that, The parallel segment is arranged parallel to the second epoxy board; the second epoxy board is arranged perpendicular to the first epoxy board.

6. The copper busbar connection structure of the two-wire combiner cabinet according to claim 1, characterized in that, There are two second copper busbars, which are symmetrically arranged on the second epoxy board, and the second copper busbars correspond one-to-one with the fuses.

7. The copper busbar connection structure of the two-wire combiner cabinet according to claim 1, characterized in that, The third 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 first vertical portion is connected to the fourth copper busbar, the connecting portion is fixed to the first fixing plate, and the second vertical portion is connected to the top of the circuit breaker and fixed to the first epoxy board.

8. The copper busbar connection structure of the two-wire combiner cabinet according to claim 7, characterized in that, The fourth copper busbar is a strip-shaped copper busbar; the length of the first vertical portion is greater than the width of the fourth copper busbar.

9. The copper busbar connection structure of the two-wire combiner cabinet according to claim 1, characterized in that, 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; The fifth copper busbar is a multi-segment copper busbar that is integrated into one piece.

10. The copper busbar connection structure of the two-wire combiner cabinet according to claim 1, characterized in that, The copper busbar connection structure of the two-line combiner cabinet also includes a sixth copper busbar, which is a strip-shaped copper busbar and is connected to the fifth copper busbar; 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.

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