Photovoltaic module junction box

Abstract

The utility model relates to the technical field of junction boxes, in particular to a photovoltaic module junction box which comprises a box body, an air inlet hole is formed in the right side wall of the box body, an exhaust hole is formed in the left side wall of the box body, an installation cylinder is installed on the side wall of an inner cavity of the box body and corresponds to the exhaust hole, and a supporting plate is installed on the inner wall of the installation cylinder. A fan is installed on the side wall of the supporting plate and located in the installation cylinder, the box body is provided with a filter screen plate through an air inlet hole and an exhaust hole, the problem that the heat dissipation effect is poor due to the fact that heat dissipation is conducted on the interior of a traditional photovoltaic module junction box through heat dissipation holes is solved through the arrangement of the fan and the like, and therefore the service life of the junction box is prolonged; by arranging the reinforcing structure, the problems that a traditional junction box is single in connecting wire fixing structure and the connecting wires are loosened due to the influence of external force after being used for a long time are solved, so that the connecting stability of the connecting wires is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of junction boxes, in particular to a photovoltaic module junction box. Background Technique

[0002] A photovoltaic module junction box is a connecting device between a solar cell array composed of solar cell modules and a solar charging control device. Its main function is to connect and protect solar photovoltaic modules, connect the electricity generated by solar cells to external circuits, and conduct the current generated by photovoltaic modules.

[0003] Traditional photovoltaic module junction boxes rely on heat dissipation holes to dissipate heat inside the box, with poor heat dissipation effect, which affects the service life of the junction box. Secondly, the fixing structure of the connecting wires in traditional junction boxes is single, and the connecting wires will become loose under the influence of external forces after long-term use. Therefore, a photovoltaic module junction box is needed to improve the above problems. Content of the Utility Model

[0004] The purpose of the utility model is to provide a photovoltaic module junction box to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution:

[0006] A photovoltaic module junction box includes a box body. An air inlet hole is opened on the right side wall of the box body, and an air outlet hole is opened on the left side wall of the box body. An installation cylinder is installed on the inner cavity side wall of the box body corresponding to the air outlet hole. A support plate is installed on the inner wall of the installation cylinder. A fan is installed on the side wall of the support plate and inside the installation cylinder. Filter plates are installed on the box body respectively through the air inlet hole and the air outlet hole. A through hole is opened on the front surface of the box body. A reinforcement structure is installed on the front surface of the box body and above the through hole. The reinforcement structure includes a U-shaped rod. A sliding sleeve is slidably connected to the outer wall of the U-shaped rod. A connecting shaft is installed on the outer wall of the sliding sleeve. A first clamping plate is arranged at the lower end of the connecting shaft. A moving plate is installed on the lower side outer wall of the first clamping plate. The moving plate is threadedly connected with a screw. The reinforcement structure further includes a fixing plate. A support block is installed on the end surface of the fixing plate. A second clamping plate is installed on the end surface of the support block. A threaded hole is opened on the support block.

[0007] As a preferred scheme of the utility model, a plurality of through holes are opened, and a plurality of sliding sleeves are installed and arranged corresponding to the through holes.

[0008] As a preferred scheme of the utility model, both ends of the U-shaped rod are connected to the front surface of the box body, and the back of the fixing plate is connected to the front surface of the box body.

[0009] As a preferred embodiment of the present utility model, a plurality of fixing plates are installed and are arranged corresponding to the through holes, and rubber pads are arranged on the inner walls of the first clamping plate and the moving plate.

[0010] As a preferred embodiment of the present utility model, the first clamping plate and the moving plate are arranged in a half-cylindrical structure, and the first clamping plate and the moving plate are arranged to be adapted to each other.

[0011] As a preferred embodiment of the present utility model, a box cover is installed on the back of the box body through a hinge, and mounting ears are installed on the left and right side walls of the box body and located on the front and rear sides.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] In the present utility model, by arranging a fan and a filter screen plate in a photovoltaic module junction box, etc., using the fan to work, accelerating the air flow inside the box body, increasing the air exchange speed inside and outside the box body, and enhancing the heat dissipation of the inside of the box body; the setting of the filter screen plate can filter the air entering the inside of the box body, avoiding the situation that dust enters the box body and adheres to the circuit, causing the circuit to age. By setting a fan, etc., the problem that the traditional photovoltaic module junction box relies on heat dissipation holes to dissipate heat inside the box, and the heat dissipation effect is poor, is solved, thereby prolonging the service life of the junction box;

[0014] In the present utility model, by arranging a reinforcement structure in a photovoltaic module junction box, when one end of the connecting wire passes through the through hole and is connected to the wiring device inside the box body, the first clamping plate and the second clamping plate are used in cooperation to clamp the outer wall of the connecting wire, and the connecting wire is secondarily fixed. By setting the reinforcement structure, the problem that the traditional junction box has a single fixing structure for the connecting wire, and the connecting wire will loosen under the influence of external force after long-term use, is solved, thereby improving the connection stability of the connecting wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional structural diagram of the present utility model;

[0016] Figure 2 is a structural diagram of the reinforcement structure of the present utility model;

[0017] Figure 3 is a sectional structural diagram of the present utility model.

[0018] In the figure: 1, box body; 2, air inlet hole; 3, air outlet hole; 4, installation cylinder; 5, support plate; 6, fan; 7, filter screen plate; 8, through hole; 9, reinforcement structure; 901, U-shaped rod; 902, sliding sleeve; 903, connecting shaft; 904, first clamping plate; 905, moving plate; 906, screw; 907, fixing plate; 908, support block; 909, second clamping plate; 910, threaded hole; 10, box cover; 11, mounting ear. Detailed implementation manners

[0019] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part rather than all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0020] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant accompanying drawings. Several embodiments of the present utility model are given in the accompanying drawings. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present utility model more thorough and comprehensive.

[0021] It should be noted that when an element is referred to as being "fixedly provided on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs. The terms used herein in the description of the present utility model are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0023] Embodiment: Please refer to Figures 1-3A photovoltaic module junction box shown in the figure includes a box body 1. An air inlet hole 2 is provided on the right side wall of the box body 1, and an air outlet hole 3 is provided on the left side wall of the box body 1. An installation cylinder 4 is installed on the inner cavity side wall of the box body 1 corresponding to the air outlet hole 3. A support plate 5 is installed on the inner wall of the installation cylinder 4. A fan 6 is installed on the side wall of the support plate 5 and inside the installation cylinder 4. The box body 1 is respectively installed with filter net plates 7 through the air inlet hole 2 and the air outlet hole 3. A through hole 8 is provided on the front surface of the box body 1. A reinforcement structure 9 is installed on the front surface of the box body 1 and above the through hole 8. The reinforcement structure 9 includes a U-shaped rod 901. A sliding sleeve 902 is slidably connected to the outer wall of the U-shaped rod 901. A connecting shaft 903 is installed on the outer wall of the sliding sleeve 902. A first clamping plate 904 is provided at the lower end of the connecting shaft 903. A moving plate 905 is installed on the lower outer wall of the first clamping plate 904. The moving plate 905 is threadedly connected with a screw 906. The reinforcement structure 9 further includes a fixing plate 907. A support block 908 is installed on the end surface of the fixing plate 907. A second clamping plate 909 is installed on the end surface of the support block 908. A threaded hole 910 is provided on the support block 908. By using the fan 6 to work, the air flow inside the box body 1 is accelerated, the air exchange speed inside and outside the box body 1 is increased, and the heat dissipation of the inside of the box body 1 is enhanced; the setting of the filter net plate 7 can filter the air entering the inside of the box body 1, avoiding the situation that dust enters the box body 1 and adheres to the circuit, causing the circuit to age. By setting the fan 6, etc., the problem that the traditional photovoltaic module junction box relies on the heat dissipation holes to dissipate heat inside the box, and the heat dissipation effect is poor, is solved, thereby prolonging the service life of the junction box; when one end of the connecting wire penetrates through the through hole 8 and is connected to the wiring device inside the box body 1, the first clamping plate 904 and the second clamping plate 909 are used in cooperation to clamp the outer wall of the connecting wire, and the connecting wire is fixed for the second time. By setting the reinforcement structure 9, the problem that the traditional junction box has a single fixing structure for the connecting wire, and the connecting wire will loosen under the influence of external force after long-term use, is solved, thereby improving the connection stability of the connecting wire.

[0024] In this embodiment, referring to Figure 1 and 2 As shown, a plurality of through holes 8 are provided. A plurality of sliding sleeves 902 are installed and are arranged corresponding to the through holes 8; both ends of the U-shaped rod 901 are connected to the front surface of the box body 1, and the back of the fixing plate 907 is connected to the front surface of the box body 1; a plurality of fixing plates 907 are installed and are arranged corresponding to the through holes 8. Rubber pads are provided on the inner walls of the first clamping plate 904 and the moving plate 905; by providing rubber pads on the inner walls of the first clamping plate 904 and the moving plate 905, it plays a role in protecting the outer skin of the connecting wire when clamping the outer surface of the connecting wire;

[0025] In this embodiment, referring to Figure 1 and 2As shown, the first clamping plate 904 and the moving plate 905 are arranged in a half-cylindrical structure, and the first clamping plate 904 and the moving plate 905 are arranged to be adapted to each other; the back of the box body 1 is installed with a box cover 10 through a hinge, and installation ears 11 are installed on the left and right side walls of the box body 1 and located on the front and back sides; through the arrangement that the first clamping plate 904 and the moving plate 905 are in a half-cylindrical structure and the first clamping plate 904 and the moving plate 905 are arranged to be adapted to each other, and being adapted to the outer wall circle of the connecting wire, the stable clamping of the connecting wire is realized;

[0026] Working principle: When the photovoltaic module junction box is in use, the fan 6 works to accelerate the air flow inside the box body 1, increase the air exchange speed inside and outside the box body 1, and improve the heat dissipation effect inside the box body 1. By setting the fan 6, etc., the problem that the traditional photovoltaic module junction box relies on heat dissipation holes to dissipate heat inside the box and has a poor heat dissipation effect is solved, thereby prolonging the service life of the junction box; the external air enters the inside of the box body 1 through the filter mesh plate 7, and the dust and impurities in the air are filtered out, making the inside of the box body 1 relatively clean; when one end of the connecting wire passes through the through hole 8 and is connected to the wiring device inside the box body 1, the outer wall of the connecting wire is on the inner wall of the second clamping plate 909, the sliding sleeve 902 is driven to slide on the outer wall of the U-shaped rod 901, the sliding sleeve 902 drives the connecting shaft 903 to move, the connecting shaft 903 drives the first clamping plate 904 to move, the connecting shaft 903 wraps around the outer wall of the connecting wire, so that the moving plate 905 and the support block 908 are mutually attached, and the moving plate 905 is fixed on the second clamping plate 909 by using the screw 906 to clamp the outer wall of the connecting wire and perform secondary fixation on the connecting wire. By setting the reinforcement structure 9, the problem that the traditional junction box has a single structure for fixing the connecting wire and the connecting wire will become loose under the influence of external force after long-term use is solved, thereby improving the connection stability of the connecting wire.

[0027] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A photovoltaic module junction box, comprising a box body (1), characterized in that: An air inlet (2) is provided on the right side wall of the box body (1), an air outlet (3) is provided on the left side wall of the box body (1), a mounting tube (4) is installed on the inner side wall of the box body (1) and corresponding to the air outlet (3), a support plate (5) is installed on the inner wall of the mounting tube (4), a fan (6) is installed on the side wall of the support plate (5) and inside the mounting tube (4), a filter screen (7) is installed on the box body (1) through the air inlet (2) and the air outlet (3), a through hole (8) is provided on the front side of the box body (1), and a reinforcement structure (9) is installed on the front side of the box body (1) and on the upper side of the through hole (8); The reinforcement structure (9) includes a U-shaped rod (901), a sliding sleeve (902) is slidably connected to the outer wall of the U-shaped rod (901), a connecting shaft (903) is installed on the outer wall of the sliding sleeve (902), a first clamping plate (904) is provided at the lower end of the connecting shaft (903), a movable plate (905) is installed on the lower outer wall of the first clamping plate (904), and the movable plate (905) is connected to a screw (906) by threading, and the reinforcement structure (9) also includes a fixed plate (907), a support block (908) is installed on the end surface of the fixed plate (907), a second clamping plate (909) is installed on the end surface of the support block (908), and a threaded hole (910) is opened on the support block (908).

2. A photovoltaic module junction box according to claim 1, characterized in that: The through holes (8) are provided with a plurality of holes, and the sliding sleeves (902) are installed with a plurality of holes and are arranged corresponding to the through holes (8).

3. A photovoltaic module junction box according to claim 1, characterized in that: The two ends of the U-shaped rod (901) are connected to the front side of the box body (1), and the back side of the fixing plate (907) is connected to the front side of the box body (1).

4. A photovoltaic module junction box according to claim 1, characterized in that: The fixed plate (907) is installed with a plurality of them and is arranged corresponding to the through holes (8), and rubber pads are arranged on the inner walls of the first clamping plate (904) and the movable plate (905).

5. The photovoltaic module junction box according to claim 1, characterized in that: The first clamping plate (904) and the movable plate (905) are arranged in a half-cylindrical structure, and the first clamping plate (904) and the movable plate (905) are arranged to match each other.

6. A photovoltaic module junction box according to claim 1, characterized in that: A box cover (10) is installed on the back of the box body (1) via a hinge, and mounting ears (11) are installed on the left and right side walls of the box body (1) and at the front and rear sides.

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