Copper bar connecting structure and junction cabinet

Abstract

The utility model provides a copper bar connecting structure. The copper bar connecting structure comprises a fixing plate, a switch assembly, a first copper bar, a second copper bar, a third copper bar, a first fuse wire, a second fuse wire, a third fuse wire, a first supporting plate, a second supporting plate, a first epoxy plate, a second epoxy plate and a third epoxy plate. The switch assembly is arranged on the fixing plate, and the switch assembly is connected with the first copper bar, the second copper bar, the third copper bar, the first epoxy plate, the second epoxy plate and the third epoxy plate; the first fuse wire is arranged on the first copper bar, the second fuse wire is arranged on the second copper bar, and the third fuse wire is arranged on the third copper bar; the first copper bar and the third copper bar are arranged at the two ends of the first supporting plate respectively. And the second copper bar is arranged on the second supporting plate. The confluence cabinet area occupied by the cables can be reduced, the layout is reasonable, 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 busbar connection structure and a junction cabinet. Background Art

[0002] The combiner cabinet is a crucial component of the energy storage system, its primary function being to facilitate interaction between the AC and DC sides. The energy storage system is charged and discharged 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, which in turn is connected to an external power source or load. This allows the energy storage system to exchange energy with the outside world. As a crucial component of the energy storage battery system, the combiner cabinet integrates the positive and negative wiring harnesses of each battery cluster and connects the cables of the PCS (Power Conversion System) components. Optimizing its functionality is crucial.

[0003] However, the internal structure layout of traditional energy storage combiner cabinets is imperfect, and the output cables are thick in diameter, which makes cable layout and routing difficult. They also occupy a large area of ​​the combiner cabinet, requiring a larger size to meet usage needs. This is not conducive to the movement and installation of the energy storage battery system, and also increases the cost of the entire cabinet. Utility Model Content

[0004] Based on this, the embodiments of the present invention provide a copper busbar connection structure and a junction cabinet, aiming to solve the problems of the existing junction cabinet, such as imperfect internal structure, difficult layout and wiring, large occupied area, inconvenient installation and movement, inability to meet customer needs for using a UPS with a neutral line, and increased cost of the entire cabinet.

[0005] To achieve the above objectives, on the one hand, an embodiment of the present invention provides a copper bar connection structure suitable for a combiner cabinet, comprising a fixing plate, a switch assembly, a first copper bar, a second copper bar, a third copper bar, a first fuse, a second fuse, a third fuse, a first support plate, a second support plate, a first epoxy plate, a second epoxy plate, and a third epoxy plate;

[0006] The switch assembly is disposed on the fixing plate, and is respectively connected to the first copper bar, the second copper bar, the third copper bar, the first epoxy board, the second epoxy board, and the third epoxy board; the first fuse is disposed on the first copper bar, the second fuse is disposed on the second copper bar, and the third fuse is disposed on the third copper bar;

[0007] The first copper bar and the third copper bar are respectively arranged at two ends of the first supporting plate; the second copper bar is arranged on the second supporting plate.

[0008] As a preferred embodiment, the switch assembly includes a switch body, and a first switch copper bar, a second switch copper bar, a third switch copper bar, a fourth switch copper bar, a fifth switch copper bar, a sixth switch copper bar, a seventh switch copper bar, and an eighth switch copper bar arranged on a side surface of the switch body; the first switch copper bar, the second switch copper bar, the seventh switch copper bar, and the eighth switch copper bar are arranged at the bottom of the side surface, and the third switch copper bar, the fourth switch copper bar, the fifth switch copper bar, and the sixth switch copper bar are arranged in the middle of the side surface;

[0009] The first switch copper bar and the second switch copper bar are arranged adjacent to each other; the third switch copper bar and the fourth switch copper bar are arranged adjacent to each other; the fifth switch copper bar and the sixth switch copper bar are arranged adjacent to each other; and the seventh switch copper bar and the eighth switch copper bar are arranged adjacent to each other.

[0010] As a preferred embodiment, one end of the first copper bar is connected to the first switch copper bar, and the other end is connected to the second switch copper bar; one end of the second copper bar is connected to the third switch copper bar, and the other end is connected to the fourth switch copper bar; one end of the third copper bar is respectively connected to the fifth switch copper bar and the sixth switch copper bar, and the other end is connected to the third fuse; the seventh switch copper bar is fixed to the second epoxy board, the seventh switch copper bar and the eighth switch copper bar are respectively connected to the fourth copper bar, and the fourth copper bar is fixed to the first epoxy board.

[0011] As a preferred embodiment, the first copper bar and the second copper bar are both arc-shaped copper bars; the third copper bar is an "L"-shaped copper bar; and the fourth copper bar is a strip-shaped copper bar.

[0012] As a preferred embodiment, an end of the first switch copper bar close to the first copper bar and an end of the second switch copper bar close to the first copper bar extend in opposite directions; an end of the third switch copper bar close to the second copper bar and an end of the fourth switch copper bar close to the second copper bar extend in opposite directions.

[0013] As a preferred embodiment, one end of the first switch copper bar close to the switch body is parallel to and overlapped with one end of the second switch copper bar close to the switch body; one end of the third switch copper bar close to the switch body is parallel to and overlapped with one end of the fourth switch copper bar close to the switch body; one end of the fifth switch copper bar close to the switch body is parallel to and overlapped with one end of the sixth switch copper bar close to the switch body; one end of the seventh switch copper bar close to the switch body is parallel to and overlapped with one end of the eighth switch copper bar close to the switch body.

[0014] As a preferred embodiment, a first gap is provided between the first switch copper bar and the second switch copper bar, between the third switch copper bar and the fourth switch copper bar, between the fifth switch copper bar and the sixth switch copper bar, and between the seventh switch copper bar and the eighth switch copper bar; the thickness of the fourth copper bar is equal to the depth of the first gap; and the first switch copper bar is fixedly connected to the second switch copper bar.

[0015] As a preferred embodiment, a ninth switch copper bar and a tenth switch copper bar are adjacently arranged between the first switch copper bar and the seventh switch copper bar; the ninth switch copper bar is parallel to and overlaps with the tenth switch copper bar; a second gap is provided between the ninth switch copper bar and the tenth switch copper bar; the ninth switch copper bar is fixedly connected to the third epoxy board, and the ninth and tenth switch copper bars are respectively connected to the fifth copper bar, and the fifth copper bar is fixed to the second epoxy board.

[0016] As a preferred embodiment, an eleventh switch copper bar and a twelfth switch copper bar are adjacently arranged between the first switch copper bar and the ninth switch copper bar; the eleventh switch copper bar is parallel to and overlaps with the twelfth switch copper bar; a third gap is provided between the eleventh switch copper bar and the twelfth switch copper bar; the eleventh switch copper bar and the twelfth switch copper bar are respectively connected to the sixth copper bar, and the sixth copper bar is fixed to the third epoxy board.

[0017] As a preferred embodiment, the end of the seventh switch copper bar away from the switch body, the end of the ninth switch copper bar away from the switch body, and the end of the eleventh switch copper bar away from the switch body are all extended in the same direction;

[0018] The length of the seventh switch copper bar away from one end of the switch body is greater than the length of the ninth switch copper bar away from one end of the switch body; the length of the ninth switch copper bar away from one end of the switch body is greater than the length of the eleventh switch copper bar away from one end of the switch body.

[0019] As a preferred embodiment, a seventh copper bar is provided on the first fuse; an eighth copper bar is provided on the second fuse; a ninth copper bar is provided on the third fuse; and the seventh copper bar, the eighth copper bar and the ninth copper bar are all "U"-shaped copper bars.

[0020] On the other hand, an embodiment of the present application further provides a combiner cabinet, in which the copper busbar connection structure is provided.

[0021] Compared to the existing technology, this application can 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 size of the cabinet and the space it occupies, meeting the requirements for use in space-constrained locations, while effectively enhancing the safety and reliability of the cabinet during use. Through this application, the copper busbars can be reasonably arranged, and the cables can be reasonably distributed, which can effectively optimize the wiring space, facilitate installation and maintenance, and meet the customer's requirements for UPS with a neutral line. In addition, the structure of this application effectively improves the heat dissipation of each copper busbar and fuse, facilitating the installation and maintenance of various components in the junction box. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] 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.

[0023] Figure 1 This is a schematic structural diagram of a copper busbar connection structure according to an embodiment of the present invention;

[0024] Figure 2 for Figure 1 A schematic structural diagram of the copper busbar connection structure from another angle;

[0025] Figure 3 for Figure 1 A structural diagram of the copper busbar connection structure from another angle;

[0026] Figure 4 This is a structural diagram of a combiner cabinet according to an embodiment of the present application;

[0027] Figure 5 yes Figure 4 Schematic diagram of the exploded structure of the combiner cabinet.

[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 3As shown, on the one hand, an embodiment of the present invention provides a copper busbar connection structure suitable for a combiner cabinet A, including a fixing plate 10, a switch assembly 20, a first copper busbar 30, a second copper busbar 40, a third copper busbar 50, a first fuse 60, a second fuse 70, a third fuse 80, a first support plate 90, a second support plate 100, a first epoxy plate 110, a second epoxy plate 120 and a third epoxy plate 130;

[0036] The switch assembly 20 is disposed on the fixing plate 10 and is respectively connected to the first copper bar 30, the second copper bar 40, the third copper bar 50, the first epoxy board 110, the second epoxy board 120, and the third epoxy board 130; the first fuse 60 is disposed on the first copper bar 30, the second fuse 70 is disposed on the second copper bar 40, and the third fuse 80 is disposed on the third copper bar 50;

[0037] The first copper busbar 30 and the third copper busbar 50 are respectively disposed at two ends of the first support plate 90 ; the second copper busbar 40 is disposed on the second support plate 100 .

[0038] As a preferred embodiment, the switch assembly 20 includes a switch body 21, and a first switch copper bar 22, a second switch copper bar 23, a third switch copper bar 24, a fourth switch copper bar 25, a fifth switch copper bar 26, a sixth switch copper bar 27, a seventh switch copper bar 28, and an eighth switch copper bar 29 arranged on one side of the switch body 21; the first switch copper bar 22, the second switch copper bar 23, the seventh switch copper bar 28, and the eighth switch copper bar 29 are arranged at the bottom of the side surface, and the third switch copper bar 24, the fourth switch copper bar 25, the fifth switch copper bar 26, and the sixth switch copper bar 27 are arranged in the middle of the side surface;

[0039] The first switch copper bar 22 and the second switch copper bar 23 are arranged adjacent to each other; the third switch copper bar 24 and the fourth switch copper bar 25 are arranged adjacent to each other; the fifth switch copper bar 26 and the sixth switch copper bar 27 are arranged adjacent to each other; and the seventh switch copper bar 28 and the eighth switch copper bar 29 are arranged adjacent to each other.

[0040] As a preferred embodiment, one end of the first copper bar 30 is connected to the first switch copper bar 22, and the other end is connected to the second switch copper bar 23; one end of the second copper bar 40 is connected to the third switch copper bar 24, and the other end is connected to the fourth switch copper bar 25; one end of the third copper bar 50 is respectively connected to the fifth switch copper bar 26 and the sixth switch copper bar 27, and the other end is connected to the third fuse 80; the seventh switch copper bar 28 is fixed on the second epoxy board 120, and the seventh switch copper bar 28 and the eighth switch copper bar 29 are respectively connected to the fourth copper bar 140, and the fourth copper bar 140 is fixed on the first epoxy board 110.

[0041] As a preferred embodiment, the first copper bar 30 and the second copper bar 40 are both arc-shaped copper bars; the third copper bar 50 is an "L"-shaped copper bar; and the fourth copper bar 140 is a strip-shaped copper bar.

[0042] As a preferred embodiment, the end of the first switch copper bar 22 near the first copper bar 30 and the end of the second switch copper bar 23 near the first copper bar 30 extend in opposite directions; the end of the third switch copper bar 24 near the second copper bar 40 and the end of the fourth switch copper bar 25 near the second copper bar extend in opposite directions. This arrangement facilitates the connection of the copper bars and saves connection space, providing better connection stability and heat dissipation. It also effectively alleviates the problem of insufficient cable space affecting the electrical performance of the combiner cabinet.

[0043] As a preferred embodiment, the end of the first switch copper bar 22 near the switch body 21 is parallel to and overlaps with the end of the second switch copper bar 23 near the switch body 21; the end of the third switch copper bar 24 near the switch body 21 is parallel to and overlaps with the end of the fourth switch copper bar 25 near the switch body 21; the end of the fifth switch copper bar 26 near the switch body 21 is parallel to and overlaps with the end of the sixth switch copper bar 27 near the switch body 21; and the end of the seventh switch copper bar 28 near the switch body 21 is parallel to and overlaps with the end of the eighth switch copper bar 29 near the switch body 21. This arrangement facilitates the connection of the copper bars and saves connection space, and has good connection stability and heat dissipation. At the same time, it can effectively improve the problem of insufficient cable space affecting the electrical performance of the junction box.

[0044] As a preferred embodiment, a first gap is provided between the first switch copper bar 22 and the second switch copper bar 23, between the third switch copper bar 24 and the fourth switch copper bar 25, between the fifth switch copper bar 26 and the sixth switch copper bar 27, and between the seventh switch copper bar 28 and the eighth switch copper bar 29. The thickness of the fourth copper bar 140 is equal to the depth of the first gap. The first switch copper bar 22 is fixedly connected to the second switch copper bar 23. This arrangement facilitates the connection of the copper bars and saves connection space, provides good connection stability, and has good heat dissipation. It can also effectively improve the problem of insufficient cable space affecting the electrical performance of the combiner cabinet.

[0045] As a preferred embodiment, a ninth switch copper bar 20A and a tenth switch copper bar 20B are disposed adjacent to each other between the first switch copper bar 22 and the seventh switch copper bar 28. The ninth switch copper bar 20A and the tenth switch copper bar 20B are arranged parallel to and overlap each other. A second gap is provided between the ninth switch copper bar 20A and the tenth switch copper bar 20B. The ninth switch copper bar 20A is fixedly connected to the third epoxy board 130, and the ninth and tenth switch copper bars 20A, 20B are respectively connected to the fifth copper bar 150, which is fixed to the second epoxy board 120. This arrangement can further ensure heat dissipation between the copper bars, resulting in faster heat dissipation and stable operation of the copper bars.

[0046] As a preferred embodiment, an eleventh and twelfth switch copper bars 20C and 20D are adjacently disposed between the first switch copper bar 22 and the ninth switch copper bar 20A. The eleventh and twelfth switch copper bars 20C and 20D are arranged parallel and overlapping with each other. A third gap is provided between the eleventh and twelfth switch copper bars 20C and 20D. The eleventh and twelfth switch copper bars 20C and 20D are respectively connected to a sixth copper bar 160, which is fixed to the third epoxy board 130. This arrangement facilitates the connection of the copper bars and saves space, provides good connection stability, and has excellent heat dissipation. Furthermore, it effectively alleviates the problem of insufficient cable space affecting the electrical performance of the combiner cabinet.

[0047] As a preferred embodiment, the end of the seventh switch copper bar 28 away from the switch body 21, the end of the ninth switch copper bar 20A away from the switch body 21, and the end of the eleventh switch copper bar 20C away from the switch body 21 are all extended in the same direction;

[0048] The length of the seventh switch copper bar 28 away from the switch body 21 is greater than the length of the ninth switch copper bar 20A away from the switch body 21; the length of the ninth switch copper bar 20A away from the switch body 21 is greater than the length of the eleventh switch copper bar 20C away from the switch body 21. This arrangement facilitates the connection of the copper bars and saves connection space, providing better connection stability and heat dissipation. It also effectively improves the problem of insufficient cable space affecting the electrical performance of the combiner cabinet.

[0049] As a preferred embodiment, a seventh copper bar 170 is provided on the first fuse 60; an eighth copper bar 180 is provided on the second fuse 70; a ninth copper bar 190 is provided on the third fuse 80; the seventh copper bar 170, the eighth copper bar 180 and the ninth copper bar 190 are all "U"-shaped copper bars.

[0050] On the other hand, an embodiment of the present application further provides a combiner cabinet A, in which the copper busbar connection structure is provided.

[0051] In an embodiment of the present application, the two ends of the fixed plate, the two ends of the first support plate, the two ends of the second support plate, the two ends of the first epoxy plate, the two ends of the second epoxy plate, and the two ends of the third epoxy plate are respectively fixedly connected to the slide rail A1 and the fixing bar A2 of the junction cabinet A.

[0052] The copper busbar connection structure in this application supports front-end maintenance for easy maintenance. The top of the combiner cabinet can be equipped with an optional wiring box for incoming wiring, or it can be directly connected to the customer's wiring trough. The top panel of the combiner cabinet has corresponding locations for installed coils and knockout holes to accommodate top-in and top-out wiring. The combiner cabinet is equipped with winding beams to facilitate the staggering and fixing of cables, resulting in an overall beautiful and simple design.

[0053] 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 suitable for a combiner cabinet, characterized in that: It includes a fixing plate, a switch assembly, a first copper bar, a second copper bar, a third copper bar, a first fuse, a second fuse, a third fuse, a first support plate, a second support plate, a first epoxy plate, a second epoxy plate and a third epoxy plate; The switch assembly is disposed on the fixing plate, and is respectively connected to the first copper bar, the second copper bar, the third copper bar, the first epoxy board, the second epoxy board, and the third epoxy board; the first fuse is disposed on the first copper bar, the second fuse is disposed on the second copper bar, and the third fuse is disposed on the third copper bar; The first copper bar and the third copper bar are respectively arranged at two ends of the first supporting plate; the second copper bar is arranged on the second supporting plate.

2. The copper busbar connection structure according to claim 1, characterized in that: The switch assembly includes a switch body, and a first switch copper bar, a second switch copper bar, a third switch copper bar, a fourth switch copper bar, a fifth switch copper bar, a sixth switch copper bar, a seventh switch copper bar, and an eighth switch copper bar arranged on a side surface of the switch body; the first switch copper bar, the second switch copper bar, the seventh switch copper bar, and the eighth switch copper bar are arranged at the bottom of the side surface, and the third switch copper bar, the fourth switch copper bar, the fifth switch copper bar, and the sixth switch copper bar are arranged in the middle of the side surface; The first switch copper bar and the second switch copper bar are arranged adjacent to each other; the third switch copper bar and the fourth switch copper bar are arranged adjacent to each other; the fifth switch copper bar and the sixth switch copper bar are arranged adjacent to each other; and the seventh switch copper bar and the eighth switch copper bar are arranged adjacent to each other.

3. The copper busbar connection structure according to claim 2, characterized in that: One end of the first copper bar is connected to the first switch copper bar, and the other end is connected to the second switch copper bar; one end of the second copper bar is connected to the third switch copper bar, and the other end is connected to the fourth switch copper bar; one end of the third copper bar is respectively connected to the fifth switch copper bar and the sixth switch copper bar, and the other end is connected to the third fuse; the seventh switch copper bar is fixed to the second epoxy board, and the seventh switch copper bar and the eighth switch copper bar are respectively connected to the fourth copper bar, and the fourth copper bar is fixed to the first epoxy board.

4. The copper busbar connection structure according to claim 2, characterized in that: An end of the first switch copper bar close to the first copper bar and an end of the second switch copper bar close to the first copper bar extend in opposite directions; an end of the third switch copper bar close to the second copper bar and an end of the fourth switch copper bar close to the second copper bar extend in opposite directions.

5. The copper busbar connection structure according to claim 2, characterized in that: One end of the first switch copper bar close to the switch body is parallel to and overlapped with one end of the second switch copper bar close to the switch body; one end of the third switch copper bar close to the switch body is parallel to and overlapped with one end of the fourth switch copper bar close to the switch body; one end of the fifth switch copper bar close to the switch body is parallel to and overlapped with one end of the sixth switch copper bar close to the switch body; one end of the seventh switch copper bar close to the switch body is parallel to and overlapped with one end of the eighth switch copper bar close to the switch body.

6. The copper busbar connection structure according to claim 3, characterized in that: A first gap is provided between the first switch copper bar and the second switch copper bar, between the third switch copper bar and the fourth switch copper bar, between the fifth switch copper bar and the sixth switch copper bar, and between the seventh switch copper bar and the eighth switch copper bar; the thickness of the fourth copper bar is equal to the depth of the first gap; and the first switch copper bar is fixedly connected to the second switch copper bar.

7. The copper busbar connection structure according to claim 2, characterized in that: A ninth and tenth switch copper bars are adjacently arranged between the first and seventh switch copper bars; the ninth and tenth switch copper bars are parallel to and overlap with each other; a second gap is provided between the ninth and tenth switch copper bars; the ninth switch copper bar is fixedly connected to the third epoxy board, and the ninth and tenth switch copper bars are respectively connected to the fifth copper bar, which is fixed to the second epoxy board.

8. The copper busbar connection structure according to claim 7, characterized in that: An eleventh and twelfth switch copper bars are adjacently arranged between the first and ninth switch copper bars; the eleventh and twelfth switch copper bars are arranged parallel to and overlapped with each other; a third gap is provided between the eleventh and twelfth switch copper bars; the eleventh and twelfth switch copper bars are respectively connected to a sixth copper bar, and the sixth copper bar is fixed to the third epoxy board.

9. The copper busbar connection structure according to claim 8, characterized in that: One end of the seventh switch copper busbar away from the switch body, one end of the ninth switch copper busbar away from the switch body, and one end of the eleventh switch copper busbar away from the switch body are all extended in the same direction; The length of the seventh switch copper bar away from one end of the switch body is greater than the length of the ninth switch copper bar away from one end of the switch body; the length of the ninth switch copper bar away from one end of the switch body is greater than the length of the eleventh switch copper bar away from one end of the switch body; A seventh copper bar is provided on the first fuse; an eighth copper bar is provided on the second fuse; a ninth copper bar is provided on the third fuse; the seventh copper bar, the eighth copper bar and the ninth copper bar are all "U"-shaped copper bars.

10. A combiner cabinet, characterized in that: The copper busbar connection structure according to any one of claims 1 to 9 is provided in the combiner cabinet.

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