Lightning protection photovoltaic combiner box

Abstract

The utility model discloses a lightning protection photovoltaic confluence box, including the box, install the box door on the box, two through slots are symmetrically arranged on the box, the top fixedly connected with the rain -proof roof of the box, the bottom of rain -proof roof is all provided with male groove in corresponding position of two through slots, and the inside of two male grooves all inserts the male strip, and the side end screw thread connection of rain -proof roof has the first screw of cooperation with male strip, the bottom fixedly connected with the rain -proof box of rain -proof roof, and the side end of rain -proof box is provided with a plurality of air grooves, and the inside of rain -proof box is located in a plurality of air groove corresponding positions and is all provided with the rain -proof board, and the height of rain -proof board near air groove one end is lower than the height of far away from air groove one end, can avoid rainwater to enter to the inside of box, avoids the water short -circuit damage of the electric element in the box.

Description

Technical Field

[0001] This utility model relates to the field of combiner box technology, and more specifically, to a lightning protection photovoltaic combiner box. Background Technology

[0002] A photovoltaic (PV) lightning protection combiner box is a crucial component of a solar power generation system, used to centrally connect and protect PV panel arrays. Its main function is to aggregate the current from multiple PV cells connected in series, providing current protection, overvoltage protection, and monitoring capabilities. It also needs to possess a certain level of lightning protection capability, which is essential for protecting the solar system from damage caused by lightning strikes and overvoltages. Lightning rods are typically installed on PV lightning protection combiner boxes.

[0003] A search revealed that Chinese utility model patent application number CN201921669104.6 discloses a photovoltaic lightning protection combiner box, including a box body, a rain shield welded to the upper end of the box body, a door hinged to the front end of the box body, a transparent window on the door, a support column connected to the lower end of the box body by threads, a base welded to the lower end of the support column, a bolt installed in the base, the bolt being drilled into the ground, the ground contacting the base, and through grooves and grooves opening on the inner two side walls of the box body, the through grooves and grooves being connected.

[0004] During use, two through slots are set on the box to allow air to circulate inside and cool the inside of the box. Since the rain shield is fixedly connected to the upper side of the box, when it rains, there is wind. Due to the wind, the rainwater falls at an angle and falls into the through slots and into the inside of the box. This can easily cause short circuits and damage to the electrical components inside the box. In addition, it is not convenient to adjust the height of the box, and it is not convenient to install the box at a suitable height according to the installation requirements. Utility Model Content

[0005] (a) Technical problems to be solved In view of the problems existing in the prior art, this utility model provides a lightning protection photovoltaic combiner box to solve the technical problems mentioned in the background art.

[0006] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: a lightning protection photovoltaic combiner box, including a box body with a door installed on it. Two through slots are symmetrically arranged on the box body. A rainproof top plate is fixedly connected to the top of the box body. A convex groove is provided at the bottom of the rainproof top plate corresponding to the two through slots. A convex strip is inserted into the interior of each of the two convex grooves. A first screw that mates with the convex strip is threaded to the side end of the rainproof top plate. A rainproof box is fixedly connected to the bottom end of the rainproof top plate. Multiple ventilation slots are provided on the side end of the rainproof box. Rainproof plates are provided inside the rainproof box at positions corresponding to the multiple ventilation slots. The height of the rainproof plate near the ventilation slot is lower than the height of the end away from the ventilation slot, thus preventing rainwater from entering the interior of the box and preventing water ingress and short-circuit damage to the internal electrical components.

[0007] The present invention is further configured such that a fixing ring is fixedly connected inside the through groove, and an installation ring is installed on the fixing ring by a plurality of second screws. A dustproof net is fixedly connected inside the installation ring to prevent dust from entering the interior of the box.

[0008] The present invention is further provided that a sealing gasket is provided between the rainproof box and the box body to ensure the sealing of the contact position between the rainproof box and the box body.

[0009] The present invention is further provided that a fixing plate is fixedly connected inside the rainproof box, and a fan mounting frame is fixedly connected to the bottom end of the fixing plate, so as to facilitate the installation of a fan according to the usage requirements and improve the heat dissipation effect inside the box.

[0010] The present invention is further configured such that adjustment grooves are provided at the four corners of the bottom of the box, and support legs are slidably arranged inside the multiple adjustment grooves. Multiple slots are evenly arranged on the side of the support legs. A third screw is threadedly connected to the box at the position corresponding to the multiple adjustment grooves. One end of the third screw extending into the adjustment groove is fixedly connected to a locking post that matches the slot, so as to facilitate the adjustment of the height of the box.

[0011] The present invention is further configured such that each of the bottom ends of the plurality of support legs is fixedly connected to a mounting plate, and the mounting plate is provided with a plurality of mounting holes, so that expansion screws or the like can pass through the inside of the mounting holes to facilitate fixing of the mounting plate.

[0012] The present invention is further provided that the bottom end of the box is fixedly connected with multiple conduits to facilitate the passage of wires.

[0013] The present invention is further configured such that a lightning rod is fixedly connected to the top of the rainproof roof plate to serve as a lightning protection device.

[0014] (III) Beneficial Effects Compared with the prior art, this utility model provides a lightning protection photovoltaic combiner box, which has the following beneficial effects: 1. The rainproof top plate provides some rain protection. A rainproof box is installed at the bottom of the rainproof top plate. Multiple ventilation slots on the rainproof box facilitate air circulation. At the same time, rainproof plates are fixedly connected to the multiple ventilation slots inside the rainproof box to prevent rainwater that has reached the ventilation slots from flowing into the interior of the rainproof box. This prevents rainwater from entering the box and causing short circuits and damage to the electrical components inside the box.

[0015] 2. By sliding multiple support legs inside multiple adjustment slots, the length of the support legs outside the box can be easily adjusted. After adjustment, tighten the third screw to insert the locking pin into the corresponding locking slot and fix the support leg, thereby facilitating the adjustment of the height of the box and making it easy to install the box at the appropriate height according to the installation requirements.

[0016] 3. The fan mounting frame is fixedly connected inside the housing, which facilitates the installation of the fan. Users can choose whether to install the fan according to their needs. The fan mounting frame meets people's installation needs and improves its practicality. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the front structure of a lightning protection photovoltaic combiner box according to the present invention; Figure 2 This is a side view of a partial structure of a lightning protection photovoltaic combiner box according to the present invention. Figure 3 This is a bottom view of the box structure in this utility model; Figure 4 This is a schematic diagram showing the connection between the convex strip, rainproof box, multiple rain shields, fixing plate and fan mounting frame in this utility model. Figure 5 This is a schematic diagram of the connection between the third screw and the locking pin in this utility model.

[0018] In the diagram: 1. Box body; 2. Box door; 3. Through groove; 4. Rainproof top plate; 5. Convex groove; 6. Convex strip; 7. First screw; 8. Rainproof box; 9. Ventilation groove; 10. Rainproof plate; 11. Fixing ring; 12. Mounting ring; 13. Dustproof net; 14. Sealing gasket; 15. Fixing plate; 16. Fan mounting frame; 17. Adjustment groove; 18. Support leg; 19. Slot; 20. Third screw; 21. Clip; 22. Mounting plate; 23. Mounting hole; 24. Conduit; 25. Lightning rod; 26. Second screw. Detailed Implementation

[0019] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0020] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0021] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0022] Please see Figures 1-5 A lightning protection photovoltaic combiner box includes a box body 1, a box door 2 installed on the box body 1, and multiple conduits 24 fixedly connected to the bottom of the box body 1 to facilitate the passage of wires. A lightning rod 25 is fixedly connected to the top of a rainproof roof plate 4 to provide lightning protection. The lightning rod 25 is connected to the ground through a conductor. The installation of the lightning rod 25 is a technique well known to those skilled in the art, and its specific installation will not be described in detail here. Two through slots 3 are symmetrically arranged on the box body 1. A fixing ring 11 is fixedly connected inside the through slot 3. An mounting ring 12 is installed on the fixing ring 11 by multiple second screws 26. A dustproof net 13 is fixedly connected inside the mounting ring 12 to provide dust protection and facilitate the replacement of the dustproof net 13. To prevent dust from entering the interior of the housing 1, a rainproof top plate 4 is fixedly connected to the top of the housing 1. The bottom of the rainproof top plate 4 is provided with convex grooves 5 at the positions corresponding to the two through grooves 3. Convex strips 6 are inserted into the interior of the two convex grooves 5. The side end of the rainproof top plate 4 is threaded with a first screw 7 that mates with the convex strips 6. A rainproof box 8 is fixedly connected to the bottom of the rainproof top plate 4. A sealing gasket 14 is provided between the rainproof box 8 and the housing 1 to ensure the sealing of the contact position between the rainproof box 8 and the housing 1. Multiple ventilation grooves 9 are provided on the side end of the rainproof box 8. Rainproof plates 10 are provided inside the rainproof box 8 at the positions corresponding to the multiple ventilation grooves 9. The height of the end of the rainproof plate 10 near the ventilation groove 9 is lower than the height of the end away from the ventilation groove 9.

[0023] Specifically, the rainproof top plate 4 provides a certain degree of rain protection. A rainproof box 8 is installed at the bottom of the rainproof top plate 4. Multiple ventilation slots 9 on the rainproof box 8 facilitate air circulation. At the same time, rainproof plates 10 are fixedly connected to the inside of the rainproof box 8 at positions corresponding to the multiple ventilation slots 9, which can prevent rainwater that has reached the ventilation slots 9 from flowing into the inside of the rainproof box 8, thereby preventing rainwater from entering the inside of the box 1 and preventing water from entering the electrical components inside the box 1 and causing short circuits and damage.

[0024] Please see Figure 4 The rainproof box 8 has a fixed plate 15 inside, and a fan mounting frame 16 is fixedly connected to the bottom of the fixed plate 15, which facilitates the installation of a fan according to usage requirements and improves the heat dissipation effect inside the box 1.

[0025] Specifically, a fan mounting frame 16 is fixedly connected inside the housing 1, which facilitates the installation of the fan. People can choose whether to install the fan according to their needs. By setting the fan mounting frame 16, people's installation needs are met, and the practicality of the product is improved.

[0026] Please see Figure 1 , Figure 3 and Figure 5 Each of the four corners of the bottom of the housing 1 is provided with an adjustment groove 17. Support legs 18 are slidably arranged inside the multiple adjustment grooves 17. Multiple slots 19 are evenly arranged on the side of the support legs 18. A third screw 20 is threadedly connected to the position on the housing 1 corresponding to the multiple adjustment grooves 17. The end of the third screw 20 extending into the inside of the adjustment groove 17 is fixedly connected to a locking post 21 that matches the slot 19. The bottom of the multiple support legs 18 is fixedly connected to a mounting plate 22. The mounting plate 22 is provided with multiple mounting holes 23, which facilitate the use of expansion screws or the like to pass through the mounting holes 23 to fix the mounting plate 22.

[0027] Specifically, by having multiple support legs 18 slide inside multiple adjustment slots 17, the length of the support legs 18 outside the housing 1 can be adjusted. After adjustment, the third screw 20 is tightened so that the locking pin 21 is inserted into the corresponding locking slot 19 to fix the support legs 18, thereby facilitating the adjustment of the height of the housing 1 and making it easy to install the housing 1 at the appropriate height according to the installation requirements.

[0028] In this embodiment, the first screw 7, the multiple second screws 26, and the multiple third screws 20 are all stainless steel screws.

[0029] In summary, when using the overall equipment: The rainproof top plate 4 provides some rain protection. A rainproof box 8 is installed at the bottom of the rainproof top plate 4. Multiple ventilation slots 9 on the rainproof box 8 facilitate air circulation. At the same time, rainproof plates 10 are fixedly connected to the inside of the rainproof box 8 at positions corresponding to the multiple ventilation slots 9, which can prevent rainwater that has reached the ventilation slots 9 from flowing into the inside of the rainproof box 8.

[0030] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A lightning protection photovoltaic combiner box, comprising a box body (1) and a box door (2) installed on the box body (1), characterized in that: Two through slots (3) are symmetrically arranged on the box body (1). A rainproof top plate (4) is fixedly connected to the top of the box body (1). A convex groove (5) is provided at the bottom of the rainproof top plate (4) corresponding to the two through slots (3). A convex strip (6) is inserted into the inside of the two convex grooves (5). A first screw (7) that mates with the convex strip (6) is threaded to the side of the rainproof top plate (4). A rainproof box (8) is fixedly connected to the bottom of the rainproof top plate (4). A plurality of ventilation slots (9) are provided at the side of the rainproof box (8). A rainproof plate (10) is provided at the position corresponding to the plurality of ventilation slots (9) inside the rainproof box (8). The height of the end of the rainproof plate (10) near the ventilation slot (9) is lower than the height of the end away from the ventilation slot (9).

2. The lightning protection photovoltaic combiner box according to claim 1, characterized in that: A fixing ring (11) is fixedly connected inside the through groove (3). An installation ring (12) is installed on the fixing ring (11) by a plurality of second screws (26). A dustproof net (13) is fixedly connected inside the installation ring (12).

3. The lightning protection photovoltaic combiner box according to claim 1, characterized in that: A sealing gasket (14) is provided between the rainproof box (8) and the box body (1).

4. A lightning protection photovoltaic combiner box according to claim 3, characterized in that: The rainproof box (8) is fixedly connected to a fixing plate (15), and a fan mounting frame (16) is fixedly connected to the bottom of the fixing plate (15).

5. A lightning protection photovoltaic combiner box according to claim 1, characterized in that: The box (1) has adjustment grooves (17) at the four corners of the bottom. Support legs (18) are slidably arranged inside the multiple adjustment grooves (17). Multiple slots (19) are evenly arranged on the side of the support legs (18). A third screw (20) is threadedly connected to the box (1) at the position corresponding to the multiple adjustment grooves (17). The end of the third screw (20) extending into the adjustment groove (17) is fixedly connected to a locking post (21) that matches the slot (19).

6. A lightning protection photovoltaic combiner box according to claim 5, characterized in that: The bottom ends of the multiple support legs (18) are fixedly connected to mounting plates (22), and the mounting plates (22) are provided with multiple mounting holes (23).

7. A lightning protection photovoltaic combiner box according to claim 1, characterized in that: Multiple conduits (24) are fixedly connected to the bottom of the box (1).

8. A lightning protection photovoltaic combiner box according to claim 1, characterized in that: A lightning rod (25) is fixedly connected to the top of the rainproof roof plate (4).

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