Photovoltaic power generation combiner box

Abstract

The utility model relates to the technical field of photovoltaic power generation, and discloses a photovoltaic power generation combiner box, which comprises a combiner box body and at least one cable, an element chamber matched with the cable is arranged in the combiner box body, a box cover matched with the element chamber is hinged on the combiner box body, and the box cover is hinged on the combiner box body. The component chamber is internally provided with at least one fuse and a bus board, the fuse and the bus board are electrically connected with a cable, the component chamber is internally provided with at least one limiting mechanism, and the limiting mechanism comprises a mounting plate fixedly mounted in the component chamber; the mounting plate is fixedly connected with at least one U-shaped block which is uniformly arranged, the U-shaped block is matched with a cable, stroke grooves which are oppositely arranged are formed in the U-shaped block, and reset springs are arranged in the stroke grooves in the two sides. Compared with the prior art, the utility model has the advantage of being beneficial to overhaul and maintenance work in the long-term use process.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic power generation, in particular to a photovoltaic power generation combiner box. Background Art

[0002] In the entire photovoltaic power generation system, the combiner box can ensure the orderly connection of photovoltaic modules. It is a wiring device that can realize the convergence function. When the photovoltaic power generation system is maintained, the circuit can be cut off by manipulating the components in the combiner box, which is convenient for inspection during the maintenance of the system. When in use, multiple groups of photovoltaic cells of the same specifications are connected in series, and each group of photovoltaic cells in series is connected in parallel to the combiner box to realize convergence. After convergence, the complete photovoltaic power generation system can be formed through the controller, DC distribution cabinet, photovoltaic inverter and AC distribution cabinet.

[0003] In actual use, different groups of photovoltaic cells are connected in series and then in parallel to a combiner box, which will result in the combiner box having multiple fuses that control different groups respectively. A single fuse itself is connected to many cables, and the fuse also needs to be connected to multiple cables between the bus, which leads to messy overall cable routing in the combiner box. Even if the lines are sorted out during the initial construction of the photovoltaic power generation system, long-term use and multiple maintenance and inspections will cause messy arrangements between the lines. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] The technical problem to be solved by the utility model is that since the junction box is connected in parallel with multiple series photovoltaic cell groups, there are multiple fuses in the junction box that are electrically connected to different groups respectively, and the fuses need to be connected to the bus cable, resulting in a messy arrangement of the cables in the junction box, which is not conducive to inspection and maintenance work during long-term use.

[0006] (II) Technical solution

[0007] In order to solve the above technical problems, the technical solution provided by the utility model is: a photovoltaic power generation junction box, including a junction box body and at least one cable, the junction box body is provided with a component chamber that cooperates with the cable, the junction box body is hinged with a box cover that cooperates with the component chamber, the component chamber is provided with at least one fuse and a junction plate, the fuse and the junction plate are both electrically connected to the cable, the component chamber is provided with at least one limiting mechanism, the limiting mechanism includes a mounting plate fixedly installed in the component chamber, at least one and evenly arranged U-shaped blocks are fixedly connected to the mounting plate, the U-shaped block cooperates with the cable, the U-shaped block is provided with relatively arranged travel grooves, the travel grooves on both sides are provided with reset springs, and the travel grooves on both sides are plugged with limit blocks respectively connected to one end of the reset springs on both sides.

[0008] As an improvement, one end of the limit block relative to the return spring is designed with a rounded corner.

[0009] As an improvement, a soft pad cooperating with the cable is adhered to the inner wall of the U-shaped block.

[0010] As an improvement, the mounting plate is connected to the inner wall of the component chamber by bolts.

[0011] As an improvement, there is a certain distance between the limit blocks on both sides.

[0012] As an improvement, a label is adhered to the U-shaped block.

[0013] (III) Beneficial effects

[0014] The advantages of the present invention compared with the prior art are that the cables on the fuses connected to the combiner box body and the cables between the fuses and the combiner board are limited by the limiting mechanism, and the cables are conveniently taken out of the limiting mechanism. After the inspection and maintenance are completed, the limiting mechanism can also be used to limit the cables again, which is convenient for the inspection and maintenance work during the long-term use of the combiner box body and can organize the cables that are arranged in a disorderly manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model is a three-dimensional photovoltaic power generation junction box Figure 1 .

[0016] Figure 2 The utility model is a three-dimensional photovoltaic power generation junction box Figure 2 .

[0017] Figure 3 The utility model is a schematic structural diagram of a limit mechanism of a photovoltaic power generation combiner box clamping a section of cable.

[0018] Figure 4 It is an enlarged view of point A of a photovoltaic power generation combiner box of the utility model.

[0019] As shown in the figure: 1. Junction box body; 2. Box cover; 3. Fuse; 4. Junction plate; 5. Cable; 6. Component chamber; 7. Mounting plate; 8. U-shaped block; 9. Limit block; 10. Travel groove. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0021] Embodiment 1

[0022] like Figure 1 , Figure 2 and Figure 3 As shown, a photovoltaic power generation junction box includes a junction box body 1 and at least one cable 5, wherein the junction box body 1 is provided with a component chamber 6 cooperating with the cable 5, and a box cover 2 cooperating with the component chamber 6 is hingedly connected to the junction box body 1, wherein at least one fuse 3 and a junction plate 4 are provided in the component chamber 6, wherein the fuse 3 and the junction plate 4 are electrically connected to the cable 5, and wherein at least one limiting mechanism is provided in the component chamber 6.

[0023] Through the above structure, each series photovoltaic battery group can be connected. How to limit the connected cable 5 is as follows:

[0024] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the limiting mechanism includes a mounting plate 7 fixedly installed in the component chamber 6, the mounting plate 7 is connected to the inner wall of the component chamber 6 by bolts, at least one U-shaped block 8 is fixedly connected to the mounting plate 7 and is evenly arranged, the U-shaped block 8 cooperates with the cable 5, and a soft pad cooperating with the cable 5 is adhered to the inner wall of the U-shaped block 8 to avoid scratches between the inner wall of the U-shaped block 8 and the cable 5, and the U-shaped block 8 is provided with relatively arranged travel grooves 10, and the travel grooves 10 on both sides are provided with return springs, and the travel grooves 10 on both sides are respectively connected with limit blocks 9 connected to one end of the return springs on both sides, and there is a certain distance between the limit blocks 9 on both sides, and the end of the limit block 9 relative to the return spring is rounded, so that the cable 5 can directly pass through the limit blocks 9 on both sides.

[0025] Through the above structure, the limiting block 9 cooperates with the return spring to limit the cable 5 in the U-shaped block 8.

[0026] Embodiment 2

[0027] like Figure 2 and Figure 3 As shown, a label is adhered to the U-shaped block 8.

[0028] Through the above structure, information such as the interface corresponding to the cable 5 limited by the U-shaped block 8 and the series-connected photovoltaic battery group are written on the label, which is convenient for maintenance and repair work.

[0029] When the utility model is implemented, when the junction box body is used, it is necessary to pass the cables of the external series battery group through and connect them to the fuse, and the fuse is electrically connected to the junction board by using the cables. Before wiring, the mounting plate is installed at a suitable position, and the number of mounting plates to be installed is selected according to the actual use process. After the mounting plate is installed, the wiring begins. During the wiring process, when the cable passes through the corresponding U-shaped block, it is pressed into the U-shaped block. At this time, the limit blocks on both sides will move into the travel groove, and the reset spring in the travel groove will be in a compressed state. When the cable passes through the limit block and extends into the inner wall of the U-shaped block, the elastic force of the reset spring will drive the limit block to reset, so that the cable can be limited, which can play a role in wiring.

[0030] When inspection and maintenance are needed later, the corresponding cables are directly pulled out of the U-shaped block. When the cables are pulled, the limit blocks will move first and then reset, making it convenient to remove the cables. After the inspection is completed, the cables can be pressed into the inner wall of the U-shaped block, which is convenient for later inspection and maintenance.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0032] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

[0033] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A photovoltaic power generation combiner box, characterized in that: The invention comprises a junction box body (1) and at least one cable (5), wherein the junction box body (1) is provided with a component chamber (6) matching with the cable (5), and a box cover (2) matching with the component chamber (6) is hingedly connected to the junction box body (1), and at least one fuse (3) and a junction plate (4) are provided in the component chamber (6), and the fuse (3) and the junction plate (4) are both electrically connected with the cable (5); At least one limiting mechanism is provided in the component chamber (6), and the limiting mechanism comprises a mounting plate (7) fixedly mounted in the component chamber (6), at least one U-shaped block (8) is fixedly connected to the mounting plate (7) and evenly arranged, the U-shaped block (8) cooperates with the cable (5), and the U-shaped block (8) is provided with travel grooves (10) arranged oppositely, and the travel grooves (10) on both sides are provided with return springs, and the travel grooves (10) on both sides are respectively plugged with limiting blocks (9) connected to one end of the return springs on both sides.

2. A photovoltaic power generation combiner box according to claim 1, characterized in that: One end of the limit block (9) opposite to the return spring is designed with a rounded corner.

3. A photovoltaic power generation combiner box according to claim 1, characterized in that: A soft pad that matches the cable (5) is adhered to the inner wall of the U-shaped block (8).

4. The photovoltaic power generation combiner box according to claim 1, characterized in that: The mounting plate (7) is connected to the inner wall of the element chamber (6) via bolts.

5. The photovoltaic power generation combiner box according to claim 1, characterized in that: There is a certain distance between the limit blocks (9) on both sides.

6. The photovoltaic power generation combiner box according to claim 1, characterized in that: A label is adhered to the U-shaped block (8).

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