Photovoltaic panel wiring structure

Abstract

The utility model relates to the technical field of solar photovoltaic panels, in particular to a photovoltaic panel wiring structure, which comprises a photovoltaic assembly, the photovoltaic assembly comprises a plurality of photovoltaic panels, the back of each photovoltaic panel is provided with a junction box, and two adjacent junction boxes are connected through a junction device. According to the utility model, the wiring device is arranged, and the plugs at the two ends of the same lead are connected with the jacks of different junction boxes, so that the series connection or parallel connection of two photovoltaic panels can be realized; the threaded sleeve is in threaded connection with the socket fixing ring, so that the junction device and the junction box can be fixed; the distance between the two ends of the two telescopic pipes can be changed by sliding the telescopic pipes, so that the distance between the two plugs is changed to adapt to different socket distances during series connection and parallel connection, the wires are wrapped by the telescopic pipes and the connecting pipes, aging can be slowed down, and meanwhile, the wires are prevented from drooping; and the conical sealing piece can be extruded by rotating the conical sleeve, so that the connection pipe and the telescopic pipe are fixed.

Description

Technical Field

[0001] The utility model relates to the technical field of solar photovoltaic panels, and specifically relates to a wiring structure for photovoltaic panels. Background Art

[0002] A photovoltaic panel is the abbreviation of a solar photovoltaic panel, also called a solar panel. It is a device that directly or indirectly converts solar radiation into electrical energy by using the photovoltaic effect or the photochemical effect. Generally, it consists of a bottom plate, solar cells, a light-transmitting cover plate, and a metal edge seal. Since the power generation of a single solar photovoltaic panel is limited, in order to improve the power generation efficiency and power generation amount, multiple solar photovoltaic panels are usually used.

[0003] In the prior art, the connection between multiple photovoltaic panels generally adopts series connection. Multiple photovoltaic panels can also be connected in parallel as a group, and then multiple groups of photovoltaic panels are connected in series. A junction box is usually installed on the back of the photovoltaic panel. The junction boxes are usually connected by wires. The connection method between the wire and the junction box is divided into two types. One is to open the junction box, insert the wire, and fix it with screws or terminal blocks. The other is that the wire directly leads out from the junction box. Positive plugs and negative plugs are respectively arranged at the ends of the positive wire and the negative wire. The positive plug and the negative plug can be engaged with each other to meet the series connection of two adjacent photovoltaic panels. However, no matter which wiring method is used, in order to facilitate wiring, the wire length is longer than the distance between two junction boxes, so the wire will sag. To prevent the wire from being damaged by friction due to shaking, the wire is usually bundled on the cross beam with a cable tie. However, affected by ground reflection and high temperature, the insulating skin of the wire will age, and then a short circuit will occur. There are potential safety hazards. Summary of the Utility Model

[0004] In order to make up for the above deficiencies, the utility model provides a wiring structure for photovoltaic panels.

[0005] The technical solution of the utility model is as follows:

[0006] A wiring structure for photovoltaic panels, comprising:

[0007] A photovoltaic module, the photovoltaic module includes a plurality of photovoltaic panels, the photovoltaic panels are arranged side by side through mounting brackets, the photovoltaic panels are used to convert light energy into electrical energy, a junction box is provided on the back of each photovoltaic panel, and adjacent two junction boxes are connected through a wiring device;

[0008] The junction box includes a box body, the top surface of the box body is fixedly connected to the photovoltaic panel, and a plurality of sockets are provided on the bottom surface of the box body, and a socket fixing ring is provided outside each socket;

[0009] The wiring device includes a wire, with plugs connected to both ends of the wire. The two plugs on the same wire are used to connect to the sockets on different boxes. The outside of the wire is wrapped with a telescopic device, and both ends of the telescopic device are fixedly connected to the plugs. The telescopic device is used to change the distance between the two plugs. A threaded sleeve is rotatably installed outside the plug and at the end of the telescopic device, and the threaded sleeve is used to be threadedly connected to the fixed ring of the socket.

[0010] Preferably, the socket includes a positive socket. There are two positive sockets on the same box, and the two positive sockets are arranged side by side. The two positive sockets are simultaneously connected to the positive electrode of the photovoltaic panel.

[0011] Preferably, the socket further includes a negative socket. There are two negative sockets on the same box, and the two negative sockets are arranged side by side. The two negative sockets are simultaneously connected to the negative electrode of the photovoltaic panel.

[0012] Preferably, the positive socket and the negative socket on the same box are symmetrical.

[0013] Preferably, the telescopic device includes a connecting pipe. Telescopic pipes are slidably connected to both ends of the connecting pipe. A conical seal is provided on the telescopic pipe near the end face of the connecting pipe. A conical sleeve is wrapped outside the conical seal, and the conical sleeve is threadedly connected to the connecting pipe.

[0014] Preferably, the wire is located inside the connecting pipe and the telescopic pipe. The plug is fixedly installed inside one end of the telescopic pipe away from the connecting pipe, and the head of the plug extends out of the telescopic pipe.

[0015] Preferably, a limiting ring is provided on the outer side of the end of the telescopic pipe. A waterproof gasket is provided on the top surface of the limiting ring. The threaded sleeve is slidably connected to the telescopic pipe and wraps the limiting ring and the waterproof gasket. The top surface of the waterproof gasket abuts against the end face of the fixed ring of the socket.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] In the present utility model, by providing a wiring device and using the plugs at both ends of the same wire to connect to the sockets of different junction boxes, the series or parallel connection of two photovoltaic panels can be achieved; by threadedly connecting the threaded sleeve and the fixed ring of the socket, the fixation of the wiring device and the junction box can be realized; by sliding the telescopic pipe, the distance between the two ends of the two telescopic pipes can be changed, thereby changing the distance between the two plugs, so as to adapt to the different distances between the sockets during series and parallel connections. The wire is wrapped by the telescopic pipe and the connecting pipe, which can slow down aging and avoid the wire sagging; by rotating the conical sleeve, the conical seal can be squeezed, thereby realizing the fixation of the connecting pipe and the telescopic pipe. Description of the Drawings

[0018] Figure 1Schematic diagram of the series connection state structure of the photovoltaic panel in the present utility model;

[0019] Figure 2 Schematic diagram of the parallel connection state structure of the photovoltaic panel in the present utility model;

[0020] Figure 3 Schematic diagram of the junction box structure in the present utility model;

[0021] Figure 4 Schematic diagram of the wiring device structure in the present utility model;

[0022] Figure 5 Exploded schematic diagram of the wiring device structure in the present utility model.

[0023] The meanings of each label in the figure are as follows:

[0024] 1. Photovoltaic module; 11. Photovoltaic panel; 12. Column; 13. Longitudinal beam; 14. Cross beam; 15. Fastener;

[0025] 2. Junction box; 21. Box body; 22. Positive electrode socket; 23. Negative electrode socket; 24. Socket fixing ring; 25. Socket protection cover;

[0026] 3. Wiring device; 31. Connecting pipe; 32. Telescopic pipe; 33. Conical seal; 34. Conical sleeve; 35. Conducting wire; 36. Plug; 37. Limiting ring; 38. Threaded sleeve; 39. Waterproof gasket. Specific embodiments

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0028] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0029] Embodiment 1:

[0030] Please refer to Figures 1-5 , the above technical solution of the present utility model will be described in detail through the following embodiments:

[0031] A wiring structure for a photovoltaic panel, comprising:

[0032] A photovoltaic module 1, the photovoltaic module 1 includes a plurality of photovoltaic panels 11, the photovoltaic panels 11 are installed side by side through mounting brackets, the photovoltaic panels 11 are used to convert light energy into electrical energy, a junction box 2 is provided on the back of each photovoltaic panel 11, and adjacent two junction boxes 2 are connected through a wiring device 3.

[0033] The photovoltaic panel 11 adopts a well-known solar panel. The mounting bracket includes four columns 12, and a longitudinal beam 13 is fixedly installed at the top of the two columns 12 on the same side through bolts. Two cross beams 14 are fixedly installed between the two longitudinal beams 13 through bolts. The photovoltaic panel 11 and the cross beam 14 are fixedly connected through a fastener 15.

[0034] The junction box 2 includes a box body 21, the top surface of the box body 21 is bonded to the photovoltaic panel 11 through an adhesive, a plurality of sockets are provided on the bottom surface of the box body 21, and a socket fixing ring 24 is provided outside each socket;

[0035] The socket fixing ring 24 and the box body 21 are made of plastic material and are integrally formed.

[0036] The socket fixing ring 24 is threadedly connected with a socket protection cover 25.

[0037] The socket protection cover 25 is used to seal the unused socket fixing ring 24.

[0038] The socket includes a positive electrode socket 22, there are two positive electrode sockets 22 on the same box body 21, the two positive electrode sockets 22 are arranged side by side, and the two positive electrode sockets 22 are simultaneously connected to the positive electrode of the photovoltaic panel 11.

[0039] The positive electrode socket 22 adopts two arc-shaped copper sheets. The positive electrode socket 22 is inserted into the box body 21 and is connected to the positive electrode of the photovoltaic panel 11 through a copper sheet. The two positive electrode sockets 22 are connected in series by welding through a copper sheet.

[0040] The socket further includes a negative electrode socket 23, there are two negative electrode sockets 23 on the same box body 21, the two negative electrode sockets 23 are arranged side by side, and the two negative electrode sockets 23 are simultaneously connected to the negative electrode of the photovoltaic panel 11.

[0041] The negative electrode socket 23 adopts two arc-shaped copper sheets. The negative electrode socket 23 is inserted into the box body 21 and is connected to the negative electrode of the photovoltaic panel 11 through a copper sheet. The two negative electrode sockets 23 are connected in series through a copper sheet.

[0042] The positive electrode socket 22 and the negative electrode socket 23 on the same box body 21 are symmetrical.

[0043] The positive electrode socket 22 is near the lower edge of the box body 21, and the negative electrode socket 23 is near the upper edge of the box body 21.

[0044] The wiring device 3 includes a wire 35. Plugs 36 are connected to both ends of the wire 35. The two plugs 36 on the same wire 35 are used to connect to the sockets on different box bodies 21. A telescopic device is wrapped outside the wire 35. Both ends of the telescopic device are fixedly connected to the plugs 36. The telescopic device is used to change the distance between the two plugs 36. A threaded sleeve 38 is rotatably installed outside the plug 36 and at the end of the telescopic device. The threaded sleeve 38 is used to be threadedly connected to the socket fixing ring 24.

[0045] The wire 35 is a copper core wire, wrapped with an insulating skin outside. The middle part of the wire 35 is spiral and has a certain telescopic ability. The plug 36 is a solid copper rod wrapped with a cylindrical plastic outside. The wire core of the wire 35 is welded to the plug 36 and then wrapped with plastic. The plug 36 is used to be inserted into the positive electrode socket 22 or the negative electrode socket 23.

[0046] The telescopic device includes a connecting pipe 31. Telescopic pipes 32 are slidably connected to both ends of the connecting pipe 31. A conical seal 33 is provided near the end face of the connecting pipe 31 on the telescopic pipe 32. A conical sleeve 34 is wrapped outside the conical seal 33. The conical sleeve 34 is threadedly connected to the connecting pipe 31.

[0047] Because the conical sleeve 34 is threadedly connected to the connecting pipe 31, rotating the conical sleeve 34 can make the conical sleeve 34 move along the axis direction of the connecting pipe 31.

[0048] When the conical sleeve 34 moves towards the connecting pipe 31, it will squeeze the conical seal 33, thereby increasing the friction between the conical seal 33 and the telescopic pipe 32, and further restricting the movement of the telescopic pipe 32.

[0049] When the conical sleeve 34 moves away from the connecting pipe 31, the pressure on the conical seal 33 decreases, thereby reducing the friction between the conical seal 33 and the telescopic pipe 32, and further releasing the restriction on the movement of the telescopic pipe 32.

[0050] The wire 35 is located inside the connecting pipe 31 and the telescopic pipe 32. The plug 36 is snap-fitted and installed inside one end of the telescopic pipe 32 away from the connecting pipe 31, and the head of the plug 36 extends out of the telescopic pipe 32.

[0051] When the telescopic pipe 32 moves, it can drive the plug 36 to move, thereby changing the distance between the two plugs 36.

[0052] A limit ring 37 is provided outside the end of the telescopic pipe 32. A waterproof gasket 39 is provided on the top surface of the limit ring 37. The threaded sleeve 38 is slidably connected to the telescopic pipe 32 and wraps the limit ring 37 and the waterproof gasket 39. The top surface of the waterproof gasket 39 abuts against the end face of the socket fixing ring 24.

[0053] After the threaded sleeve 38 is threadedly connected to the socket fixing ring 24, the limiting ring 37 will squeeze the waterproof gasket 39 upward, causing the waterproof gasket 39 to abut against the end face of the socket fixing ring 24, achieving the sealing of the end faces of the socket fixing ring 24 and the telescopic tube 32, preventing water ingress, and at the same time driving the plug 36 to insert into the positive socket 22 or the negative socket 23.

[0054] In this embodiment, when the operator uses this device, loosen the conical sleeve 34 and adjust the length of the telescopic tube 32 extending out of the connecting tube 31 to adjust the distance between the two plugs 36.

[0055] When connecting in series, insert one of the two plugs 36 connected by the same wire 35 into the positive socket 22 on the right side of the left box body 21, and then insert the other plug 36 into the negative socket 23 on the left side of the right box body 21.

[0056] Then rotate the threaded sleeve 38 to drive the limiting ring 37 to move upward until the waterproof gasket 39 abuts against the end face of the socket fixing ring 24, completing the fixation of the two plugs 36.

[0057] Tighten the conical sleeve 34 to squeeze the conical seal 33 by using the conical sleeve 34 to achieve the fixation of the telescopic tube 32.

[0058] Repeat the above steps to connect all the photovoltaic panels 11 in series, and cover the unused socket fixing rings 24 with the socket protection covers 25. One negative socket 23 needs to be left on the leftmost box body 21, and one positive socket 22 needs to be left on the rightmost box body 21 for connection to other photovoltaic panels 11.

[0059] When connecting in parallel, insert the two plugs 36 connected by the same wire 35 into the adjacent positive socket 22 and negative socket 23 of two adjacent box bodies 21 at the same time.

[0060] It should be noted that the positive socket 22 is connected to the positive socket 22, and the negative socket 23 is connected to the negative socket 23.

[0061] After all the photovoltaic panels 11 are connected in parallel, there are no plugs 36 inserted into the positive socket 22 and negative socket 23 on the right side of the rightmost box body 21 and the positive socket 22 and negative socket 23 on the left side of the leftmost box body 21. They are used for connection to other photovoltaic panels 11.

[0062] The above has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present utility model and are not used to limit the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A photovoltaic panel wiring structure, characterized in that: include: A photovoltaic assembly (1), the photovoltaic assembly (1) comprising a plurality of photovoltaic panels (11), the photovoltaic panels (11) being mounted side by side via a mounting bracket, the photovoltaic panels (11) being used to convert light energy into electrical energy, a junction box (2) being provided on the back of each photovoltaic panel (11), and two adjacent junction boxes (2) being connected via a wiring device (3); The junction box (2) comprises a box body (21), the top surface of the box body (21) is fixedly connected to the photovoltaic panel (11), the bottom surface of the box body (21) is provided with a plurality of sockets, and each socket is provided with a socket fixing ring (24) on the outside; The wiring device (3) comprises a wire (35), both ends of which are connected to plugs (36), the two plugs (36) on the same wire (35) are used to connect to sockets on different boxes (21), the wire (35) is wrapped with a telescopic device on the outside, both ends of the telescopic device are fixedly connected to the plugs (36), the telescopic device is used to change the distance between the two plugs (36), the plug (36) is rotatably mounted with a threaded sleeve (38) on the outside and at the end of the telescopic device, and the threaded sleeve (38) is used to be threadedly connected to the socket fixing ring (24).

2. A photovoltaic panel wiring structure as claimed in claim 1, characterized in that: The sockets include a positive electrode socket (22). There are two positive electrode sockets (22) on the same box body (21). The two positive electrode sockets (22) are arranged side by side. The two positive electrode sockets (22) are simultaneously connected to the positive electrode of the photovoltaic panel (11).

3. A photovoltaic panel wiring structure as claimed in claim 2, characterized in that: The socket also includes a negative pole socket (23). There are two negative pole sockets (23) on the same box body (21). The two negative pole sockets (23) are arranged side by side. The two negative pole sockets (23) are simultaneously connected to the negative pole of the photovoltaic panel (11).

4. A photovoltaic panel wiring structure as claimed in claim 3, characterized in that: The positive electrode socket (22) and the negative electrode socket (23) on the same box body (21) are symmetrical.

5. A photovoltaic panel wiring structure as claimed in claim 1, characterized in that: The telescopic device comprises a connecting pipe (31), and the connecting pipe (31) is slidably connected to a telescopic pipe (32) at two ends thereof. A conical sealing member (33) is provided on the telescopic pipe (32) near the end surface of the connecting pipe (31), and a conical sleeve (34) is wrapped around the outside of the conical sealing member (33). The conical sleeve (34) is threadedly connected to the connecting pipe (31).

6. A photovoltaic panel wiring structure as claimed in claim 5, characterized in that: The wire (35) is located inside the connecting tube (31) and the telescopic tube (32), and the plug (36) is fixedly mounted on the inner side of one end of the telescopic tube (32) away from the connecting tube (31), with the head of the plug (36) extending out of the telescopic tube (32).

7. A photovoltaic panel wiring structure as claimed in claim 6, characterized in that: A limiting ring (37) is provided on the outer side of the end of the telescopic tube (32), and a waterproof gasket (39) is provided on the top surface of the limiting ring (37). The threaded sleeve (38) is slidably connected to the telescopic tube (32) and wraps around the limiting ring (37) and the waterproof gasket (39), and the top surface of the waterproof gasket (39) abuts against the end surface of the socket fixing ring (24).

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