Photovoltaic lightning protection combiner box

Abstract

The photovoltaic lightning protection combiner box comprises a photovoltaic lightning protection combiner box body, the lower surface of the photovoltaic lightning protection combiner box body is uniformly and fixedly connected with a plurality of supporting legs, the upper surface of the photovoltaic lightning protection combiner box body is connected with a lightning arrester through a bolt, and drainage channels are formed in the two side walls of the photovoltaic lightning protection combiner box body. The two sides of the outer wall of the photovoltaic lightning protection combiner box body are uniformly provided with a plurality of outer ventilation holes communicated with the drainage channel, and the two sides of the inner wall of the photovoltaic lightning protection combiner box body are uniformly provided with a plurality of inner ventilation holes communicated with the drainage channel. According to the scheme, when the photovoltaic lightning protection combiner box is used, the drainage channels are matched with the ventilation holes and the inner ventilation holes, a certain heat dissipation effect can be achieved on electric elements installed in the photovoltaic lightning protection combiner box body, and rainwater entering through the outer ventilation holes can be shielded and limited through the rainproof mechanism in rainy days; therefore, rainwater is prevented from entering the photovoltaic lightning protection combiner box body through the inner ventilation holes as much as possible.

Description

Technical Field

[0001] The present application relates to the technical field of combiner boxes, and in particular to a photovoltaic lightning protection combiner box. Background Art

[0002] The photovoltaic lightning protection combiner box is an important component in the solar power generation system, which is used to centrally connect and protect the photovoltaic panel array. Its main function is to aggregate the current of multiple photovoltaic cells in series, and provide current protection, overvoltage protection and monitoring functions. It also needs to have a certain lightning protection capability, which is crucial to protect the solar energy system from damage caused by lightning and overvoltage.

[0003] When using an existing photovoltaic lightning protection junction box, in order to enhance the safety of the electrical components installed inside it and prevent rainwater from entering the interior of the photovoltaic lightning protection junction box through the heat dissipation port, the box body of the photovoltaic lightning protection junction box is designed to be relatively closed. However, this will affect the heat dissipation effect of the electrical components inside the photovoltaic lightning protection junction box, which is not conducive to practical use. Therefore, a technician in this field provides a photovoltaic lightning protection junction box to solve the problems raised in the above background technology. Utility Model Content

[0004] In order to solve the problem proposed in the above background technology that in order to enhance the safety of the electrical components installed inside and prevent rainwater from entering the interior of the photovoltaic lightning protection combiner box through the heat dissipation port, the box body of the photovoltaic lightning protection combiner box will be designed to be relatively closed, but this will affect the heat dissipation effect of the electrical components inside the photovoltaic lightning protection combiner box, the present application provides a photovoltaic lightning protection combiner box.

[0005] The photovoltaic lightning protection combiner box provided in this application adopts the following technical solution:

[0006] A photovoltaic lightning protection junction box comprises a photovoltaic lightning protection junction box body, a lower surface of which is evenly fixedly connected with a plurality of supporting legs, an upper surface of which is bolted with a lightning arrester, drainage channels are provided in both side walls of the photovoltaic lightning protection junction box body, a plurality of external ventilation holes connected with the drainage channels are evenly provided on both sides of the outer wall of the photovoltaic lightning protection junction box body, a plurality of internal ventilation holes connected with the drainage channels are evenly provided on both sides of the inner wall of the photovoltaic lightning protection junction box body, and a rain protection mechanism is provided on the inner side of the drainage channel close to the external ventilation holes.

[0007] By adopting the above technical solution, the drainage channel cooperates with the external ventilation holes and the internal ventilation holes, which can play a certain heat dissipation role for the electrical components installed inside the photovoltaic lightning protection junction box body. When encountering rainy weather, the rainwater entering through the external ventilation holes can be blocked and limited by the rainproof mechanism, thereby avoiding rainwater from entering the interior of the photovoltaic lightning protection junction box body through the internal ventilation holes as much as possible.

[0008] Preferably, the photovoltaic lightning protection junction box body comprises a rectangular box, the upper end surfaces of the supporting legs are fixedly connected to the lower surface of the rectangular box, the drainage channel is opened in the side wall of the rectangular box, one side of the rectangular box is movably connected to a protective door via a hinge, and the bottom of the rectangular box is evenly and fixedly connected with several threading tubes that penetrate the rectangular box.

[0009] By adopting the above technical solution, the protective door can protect the electrical components installed inside the rectangular box when it is closed, and the threading tube can facilitate the electrical connection and wiring of the electrical components installed inside the rectangular box.

[0010] Preferably, the rainproof mechanism includes a mounting plate located inside the drainage channel, a plurality of through holes penetrating the mounting plate are evenly opened on the mounting plate, the through holes are connected to the external ventilation holes, a plurality of rain shields are evenly fixedly connected to the inside of the mounting plate, and each of the rain shields is correspondingly located inside each of the through holes.

[0011] By adopting the above technical solution, the inclined rain shield can shield rainwater entering through the external ventilation holes, and the rainwater blocked by the external ventilation holes can slide down the rain shield into the interior of the drainage channel.

[0012] Preferably, a filter net is provided inside the outer ventilation hole, and a protective net is provided inside the inner ventilation hole.

[0013] By adopting the above technical solution, the filter net can filter the air entering through the external ventilation holes to a certain extent, and the protective net can play a certain protective role on the internal ventilation holes.

[0014] Preferably, air inlets connected to the drainage channel are provided on both sides of the rectangular box, and the air inlets are located above the external ventilation holes. A drying fan is provided inside the drainage channel, and the drying fan is located on one side of the air inlet, and the drying fan is located above the rain protection mechanism.

[0015] By adopting the above technical solution, starting the drying fan through the air inlet hole can speed up the air flow inside the drain, so that the inside of the drain can be quickly dried in rainy weather.

[0016] Preferably, a grounding wire is fixedly connected to the bottom of the rectangular box, a connecting terminal is fixedly connected to the lower end of the grounding wire, and a plurality of grounding electrodes are evenly and fixedly connected to the connecting terminal.

[0017] By adopting the above technical solution, through the combination of the grounding wire, the connecting terminal and the grounding electrode, it is possible to ensure that the bottom of the rectangular box is safely grounded, prevent static electricity accumulation in the equipment and structure, and improve the safety of the rectangular box.

[0018] Preferably, L-shaped rain shielding strips are fixedly connected to both sides of the rectangular box, and the L-shaped rain shielding strips are located on the side of the air inlet away from the drying fan.

[0019] By adopting the above technical solution, the L-shaped rain shielding strip can play a certain shielding role on the opened air inlet hole.

[0020] In summary, this application includes the following beneficial technical effects:

[0021] 1. The photovoltaic lightning protection combiner box is provided with a photovoltaic lightning protection combiner box body for installing various electrical and electronic components, and realizing the functions of convergence, protection, monitoring, etc. The drainage channel is provided to cooperate with the external ventilation holes and the internal ventilation holes, so as to play a certain heat dissipation role for the electrical components installed in the photovoltaic lightning protection combiner box body. When encountering rainy weather, the rainproof mechanism can block and limit the rainwater entering through the external ventilation holes, so as to avoid the rainwater from entering the photovoltaic lightning protection combiner box body through the internal ventilation holes as much as possible, and the rainwater blocked by the rainproof mechanism can be discharged through the drainage channel, so that the electrical components installed in the photovoltaic lightning protection combiner box body can be dissipated while being able to avoid being affected by rainy weather as much as possible;

[0022] 2. The photovoltaic lightning protection junction box has a protective door which can protect the electrical components installed inside the rectangular box when closed. The threading tube can facilitate the electrical connection and wiring of the electrical components installed inside the rectangular box. The combination of the grounding wire, the connecting terminal and the grounding electrode can ensure that the bottom of the rectangular box is safely grounded, prevent the equipment and structure from generating static electricity accumulation, and improve the safety of the rectangular box.

[0023] 3. The photovoltaic lightning protection junction box can block the rainwater entering through the external ventilation holes through the inclined rain shield, the filter can filter the air entering through the external ventilation holes, and the protective net can play a certain protective role on the internal ventilation holes. Starting the drying fan through the air inlet can speed up the air flow speed inside the drain, so that the inside of the drain can be quickly dried in rainy weather. The L-shaped rain shield can play a certain shielding role on the opened air inlet, and try to prevent rainwater from entering through the air inlet and affecting the use of the drying fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0025] Figure 2 is a schematic cross-sectional structural diagram in an embodiment of the present application;

[0026] Figure 3 This is an embodiment of the present application Figure 2 A schematic diagram of the structure enlargement at point A;

[0027] Figure 4 This is an embodiment of the present application Figure 2 Schematic diagram of the enlarged structure at point B in FIG.

[0028] Explanation of the accompanying drawings: 1. Photovoltaic lightning protection junction box body; 101. Rectangular box; 102. Protective door; 103. Threading tube; 2. Support leg; 3. Lightning arrester; 4. Drain; 5. External ventilation hole; 6. Internal ventilation hole; 7. Rain protection mechanism; 701. Mounting plate; 702. Through hole; 703. Rain shield; 8. Air inlet; 9. Drying fan; 10. L-shaped rain shield; 11. Filter; 12. Protective net; 13. Grounding wire; 14. Connecting terminal; 15. Grounding electrode. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-4 This application is described in further detail.

[0030] The present application embodiment discloses a photovoltaic lightning protection combiner box. Figure 1 , Figure 2 and Figure 3 The photovoltaic lightning protection junction box includes a photovoltaic lightning protection junction box body 1, a plurality of supporting legs 2 are evenly fixedly connected to the lower surface of the photovoltaic lightning protection junction box body 1, a lightning arrester 3 is connected to the upper surface of the photovoltaic lightning protection junction box body 1 by bolts, drainage channels 4 are opened in both side walls of the photovoltaic lightning protection junction box body 1, a plurality of external ventilation holes 5 connected to the drainage channels 4 are evenly opened on both sides of the outer wall of the photovoltaic lightning protection junction box body 1, a plurality of internal ventilation holes 6 connected to the drainage channels 4 are evenly opened on both sides of the inner wall of the photovoltaic lightning protection junction box body 1, and a rainproof mechanism 7 is arranged on one side of the drainage channel 4 close to the external ventilation hole 5.

[0031] In this embodiment, the photovoltaic lightning protection junction box body 1 provided in the photovoltaic lightning protection junction box is used to install various electrical and electronic components, and realize the functions of junction, protection, monitoring, etc. The photovoltaic lightning protection junction box body 1 can be supported by a plurality of supporting legs 2, and the lightning arrester 3 can protect the electrical components inside the photovoltaic lightning protection junction box body 1 from the impact of lightning, and can guide and release overvoltage to prevent the electrical components inside the photovoltaic lightning protection junction box body 1 from being damaged. Drains 4 are provided in both side walls of the photovoltaic lightning protection junction box body 1, and the drainage channels 4 are respectively connected to a plurality of uniformly provided external ventilation holes 5 and a plurality of internal ventilation holes 6, so that the photovoltaic lightning protection junction box body 1 The air inside the photovoltaic lightning protection junction box body 1 can flow with the air outside the photovoltaic lightning protection junction box body 1, thereby playing a certain heat dissipation role for the electrical components installed inside the photovoltaic lightning protection junction box body 1. When encountering rainy weather, the rainproof mechanism 7 can block and limit the rainwater entering through the external ventilation holes 5, thereby avoiding rainwater from entering the interior of the photovoltaic lightning protection junction box body 1 through the internal ventilation holes 6 as much as possible, and the rainwater blocked by the rainproof mechanism 7 can be discharged through the drain 4, so that the electrical components installed inside the photovoltaic lightning protection junction box body 1 can dissipate heat while avoiding the influence of rainy weather as much as possible, making the present application more conducive to practical use.

[0032] In a further preferred embodiment of the present invention, Figure 1 and Figure 2 As shown, the photovoltaic lightning protection junction box body 1 includes a rectangular box 101, the upper end surface of the supporting leg 2 is fixedly connected to the lower surface of the rectangular box 101, the drainage channel 4 is opened in the side wall of the rectangular box 101, and a protective door 102 is movably connected to one side of the rectangular box 101 through a hinge, and the bottom of the rectangular box 101 is evenly and fixedly connected with several threading tubes 103 that penetrate the rectangular box 101.

[0033] In this embodiment, the protective door 102 can be opened and closed as needed. When the protective door 102 is closed, the electrical components installed inside the rectangular box 101 can be protected. The wire threading tube 103 can facilitate electrical connection and wiring of the electrical components installed inside the rectangular box 101.

[0034] In a further preferred embodiment of the present invention, Figure 2 and Figure 3 As shown, the rainproof mechanism 7 includes a mounting plate 701 located inside the drain channel 4, and a plurality of through holes 702 are evenly opened on the mounting plate 701 and penetrate the mounting plate 701, and the through holes 702 are connected to the external ventilation holes 5, and a plurality of rain shields 703 are evenly fixedly connected inside the mounting plate 701, and each rain shield 70 is correspondingly located inside each through hole 702.

[0035] In this embodiment, the through hole 702 is opened to allow the air entering and exiting through the external ventilation hole 5 to circulate, and the rain shield 703 is set at an angle. The rain shield 703 can block the rainwater entering through the external ventilation hole 5, and the rainwater blocked by the external ventilation hole 5 can slide along the rain shield 703 into the interior of the drain 4, so as to facilitate drainage through the drain 4.

[0036] In a further preferred embodiment of the present invention, Figure 3 As shown, a filter screen 11 is disposed inside the outer ventilation hole 5 , and a protective screen 12 is disposed inside the inner ventilation hole 6 .

[0037] In this embodiment, the filter net 11 can filter the air entering through the external ventilation hole 5 to a certain extent, thereby minimizing the passage of dust and foreign matter. The provided protective net 12 can play a certain protective role for the internal ventilation hole 6, thereby minimizing the possibility that parts fall into the drain 4 through the internal ventilation hole 6.

[0038] In a further preferred embodiment of the present invention, Figure 2 and Figure 3 As shown, air inlet holes 8 connected to the drain channel 4 are provided on both sides of the rectangular box 101, and the air inlet holes 8 are located above the external ventilation holes 5. A drying fan 9 is provided inside the drain channel 4, and the drying fan 9 is located on one side of the air inlet hole 8, and the drying fan 9 is located above the rain protection mechanism 7.

[0039] In this embodiment, starting the drying fan 9 can speed up the air flow inside the drain 4 through the air inlet 8, so that the inside of the drain 4 can be quickly dried in rainy weather, and the rainwater inside the drain 4 can be avoided from being retained for a long time.

[0040] In a further preferred embodiment of the present invention, Figure 1 , Figure 2 and Figure 3 As shown, L-shaped rain shielding strips 10 are fixedly connected to both sides of the rectangular box 101 , and the L-shaped rain shielding strips 10 are located on the side of the air inlet 8 away from the drying fan 9 .

[0041] In the present embodiment, the L-shaped rain shielding strip 10 can provide a certain shielding effect to the air inlet 8 , thereby preventing rainwater from entering through the air inlet 8 and affecting the use of the drying fan 9 as much as possible.

[0042] In a further preferred embodiment of the present invention, Figure 2 and Figure 4 As shown, a grounding wire 13 is fixedly connected to the bottom of the rectangular box 101 , a connection terminal 14 is fixedly connected to the lower end of the grounding wire 13 , and a plurality of grounding electrodes 15 are evenly and fixedly connected to the connection terminal 14 .

[0043] In this embodiment, the grounding wire 13 can connect the bottom of the rectangular box 101 to the connecting terminal 14, and a plurality of grounding electrodes 15 are evenly and fixedly connected to the connecting terminal 14. The provided grounding electrodes 15 are inserted into the inside of the ground during installation, so that the bottom of the rectangular box 101 can be safely grounded through the combination of the grounding wire 13, the connecting terminal 14 and the grounding electrode 15, while preventing the equipment and structure from generating static electricity accumulation, thereby improving the safety of the rectangular box 101. When the rectangular box 101 is subjected to overvoltage, the grounding system can quickly guide the current to the ground, thereby reducing the impact of the overvoltage on the internal equipment of the rectangular box 101 and ensuring the normal operation of the equipment.

[0044] The implementation principle of the photovoltaic lightning protection combiner box in the embodiment of the present application is:

[0045] When in use, the drainage channel 4 opened in the side wall of the photovoltaic lightning protection junction box body 1 is respectively connected with several uniformly opened external ventilation holes 5 and several internal ventilation holes 6, so that the air inside the photovoltaic lightning protection junction box body 1 and the air outside the photovoltaic lightning protection junction box body 1 can flow with each other, which can play a certain heat dissipation role for the electrical components installed in the photovoltaic lightning protection junction box body 1. When encountering rainy weather, the rainproof mechanism 7 provided can block and limit the rainwater entering through the external ventilation holes 5, thereby avoiding rainwater from entering the interior of the photovoltaic lightning protection junction box body 1 through the internal ventilation holes 6 as much as possible, and the rainwater blocked by the rainproof mechanism 7 can be discharged through the drainage channel 4, so that the electrical components installed in the photovoltaic lightning protection junction box body 1 can dissipate heat while avoiding the influence of rainy weather as much as possible, making the present application more conducive to practical use.

[0046] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A photovoltaic lightning protection combiner box, comprising a photovoltaic lightning protection combiner box body (1), characterized in that: The lower surface of the photovoltaic lightning protection junction box body (1) is evenly fixedly connected with a plurality of support legs (2); the upper surface of the photovoltaic lightning protection junction box body (1) is connected with a lightning arrester (3) by bolts; drainage channels (4) are provided in both side walls of the photovoltaic lightning protection junction box body (1); a plurality of external ventilation holes (5) connected to the drainage channels (4) are evenly provided on both sides of the outer wall of the photovoltaic lightning protection junction box body (1); a plurality of internal ventilation holes (6) connected to the drainage channels (4) are evenly provided on both sides of the inner wall of the photovoltaic lightning protection junction box body (1); and a rainproof mechanism (7) is provided on the inner side of the drainage channel (4) close to the external ventilation holes (5).

2. A photovoltaic lightning protection combiner box according to claim 1, characterized in that: The photovoltaic lightning protection junction box body (1) comprises a rectangular box (101), the upper end surface of the support leg (2) is fixedly connected to the lower surface of the rectangular box (101), the drainage channel (4) is opened in the side wall of the rectangular box (101), one side of the rectangular box (101) is movably connected to a protective door (102) through a hinge, and the bottom of the rectangular box (101) is evenly and fixedly connected to a plurality of threading tubes (103) that penetrate the rectangular box (101).

3. The photovoltaic lightning protection combiner box according to claim 1, characterized in that: The rainproof mechanism (7) comprises a mounting plate (701) located inside the drainage channel (4); a plurality of through holes (702) are evenly provided on the mounting plate (701) and penetrate the mounting plate (701); the through holes (702) are connected to the external ventilation holes (5); a plurality of rain shielding plates (703) are evenly fixedly connected inside the mounting plate (701); each of the rain shielding plates (703) is correspondingly located inside each of the through holes (702).

4. The photovoltaic lightning protection combiner box according to claim 1, characterized in that: A filter screen (11) is arranged inside the outer ventilation hole (5), and a protective screen (12) is arranged inside the inner ventilation hole (6).

5. The photovoltaic lightning protection combiner box according to claim 2, characterized in that: Air inlet holes (8) connected to the drainage channel (4) are provided on both sides of the rectangular box (101); the air inlet holes (8) are located above the external ventilation holes (5); a drying fan (9) is provided inside the drainage channel (4); the drying fan (9) is located on one side of the air inlet holes (8); and the drying fan (9) is located above the rain protection mechanism (7).

6. The photovoltaic lightning protection combiner box according to claim 2, characterized in that: A grounding wire (13) is fixedly connected to the bottom of the rectangular box (101), a connection terminal (14) is fixedly connected to the lower end of the grounding wire (13), and a plurality of grounding electrodes (15) are evenly and fixedly connected to the connection terminal (14).

7. The photovoltaic lightning protection combiner box according to claim 5, characterized in that: L-shaped rain shielding strips (10) are fixedly connected to both sides of the rectangular box (101), and the L-shaped rain shielding strips (10) are located on the side of the air inlet (8) away from the drying fan (9).

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