Anti-seepage combined sealing structure in photovoltaic panel splicing gap

Abstract

The invention discloses an anti-seepage combined sealing structure in a photovoltaic panel splicing gap, and belongs to the technical field of photovoltaic panel installation. The anti-seepage combined sealing structure in the photovoltaic panel splicing gap comprises a central photovoltaic panel frame body, a clamping piece and a fastening piece, side connecting pieces are installed on one side of each side photovoltaic panel frame body and on the two sides of the central photovoltaic panel frame body, and a conical sealing piece used for preventing seepage is installed in the fastening piece. According to the photovoltaic panel sealing structure, the problem that long-term work is affected due to the fact that an existing photovoltaic panel sealing structure cannot keep a stable effect on the position of a connecting structure is solved, the central photovoltaic panel frame body and the side photovoltaic panel frame bodies are installed, fixed and sealed through combined installation of the clamping pieces and the fastening pieces, and the sealing effect of the photovoltaic panel sealing structure is improved. The electric leads are fully extruded through the sealing filler strips, so that the electric leads are fully protected on the outer sides of the central photovoltaic panel frame body and the side photovoltaic panel frame bodies, the connection effect is good, the edge water seepage prevention effect is improved, the structural position is stable, and long-term work is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of photovoltaic panel installation, in particular to a water seepage-proof combined sealing structure in a photovoltaic panel splicing gap. Background Art

[0002] Solar panels are thin sheets of photovoltaic semiconductors that use sunlight to generate electricity directly. Existing solar panels generally need to be connected through a connection structure, but the connection structure of existing solar panels has poor sealing performance, resulting in poor water seepage resistance. At the same time, the connection structure of existing solar panels is easily loosened due to external forces in rainy or windy weather, which may cause the solar panels to become disconnected.

[0003] A Chinese patent with announcement number CN217721060U discloses a solar panel connection structure with an anti-water seepage function, including a first concave connector and a second concave connector. The solar panel connection structure with an anti-water seepage function has good anti-water seepage performance. At the same time, when the rain is heavier or the wind is stronger, the connection structure is connected more tightly through the clamping assembly.

[0004] The photovoltaic panel sealing structure of the above patent cannot maintain a stable effect on the position of the connection structure during actual use, which affects long-term operation; therefore, it does not meet existing needs. We have proposed a combined anti-water seepage sealing structure in the splicing gaps of photovoltaic panels. Summary of the invention

[0005] The purpose of the present invention is to provide a combined anti-water seepage sealing structure in the joint gaps of photovoltaic panels, which solves the problem that the photovoltaic panel sealing structure proposed in the above background technology cannot maintain a stable effect on the position of the connection structure during actual use, affecting long-term work.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a combined sealing structure for preventing water seepage in the splicing gaps of photovoltaic panels, comprising a central photovoltaic panel frame, clamps and fasteners, side photovoltaic panel frames are arranged on both sides of the central photovoltaic panel frame, the clamps are arranged at the upper and lower ends of the central photovoltaic panel frame and the side photovoltaic panel frame, side connecting members are installed on one side of the side photovoltaic panel frame and both sides of the central photovoltaic panel frame, and the fasteners are installed at the front end of the side connecting members, a conical sealing member for preventing water seepage is installed inside the fasteners, and the sealing connection structure adopts a combined installation of clamps and fasteners to install, fix and seal the central photovoltaic panel frame and the side photovoltaic panel frame.

[0007] Preferably, photovoltaic cells are disposed inside the central photovoltaic panel frame and the side photovoltaic panel frame, and conductive wires for electrical connection are disposed at the upper and lower ends of the photovoltaic cells.

[0008] Preferably, an outer surface of the clamp is provided with an integrally formed wire entry hole, and the wire of the photovoltaic cell passes through the wire entry hole, extends to the outside of the clamp and is fixedly connected to the clamp.

[0009] Preferably, a sealing gasket is provided on the inner side of the clamp, and the sealing gasket is embedded in the interior of the central photovoltaic panel frame and the side photovoltaic panel frame and is sealed and connected to the photovoltaic cells. The conductive wire is fully squeezed by the sealing gasket so that the conductive wire is fully protected on the outside of the central photovoltaic panel frame and the side photovoltaic panel frame, with good connection effect, improved edge anti-water seepage effect, stable structural position, and conducive to long-term work. An integrally formed connecting groove is provided inside the clamp, and both ends of the sealing gasket are fixedly connected to the connecting groove. The four corners of the central photovoltaic panel frame and the side photovoltaic panel frame are wrapped and limited by the connecting groove, so as to adapt to the relative length of the sealing gasket and keep the position of the sealing gasket stable.

[0010] Preferably, a spring pressure rod is installed inside the connecting groove, the diameter of the lower end of the spring pressure rod is the same as the inner ring diameter of the wire entry hole, and a pressure spring is installed between the spring pressure rod and the sealing gasket strip, and the two ends of the pressure spring are respectively welded to the spring pressure rod and the clamping piece. During long-term operation, the wires inside the wire entry hole are continuously squeezed by the spring pressure rod to fully seal the wire entry hole to improve the working effect.

[0011] Preferably, the side connector is embedded in the outer sides of the central photovoltaic panel frame and the side photovoltaic panel frame and engages with the central photovoltaic panel frame and the side photovoltaic panel frame, the sealing gasket runs through the side connector and fits with the side connector, the sealing gasket is used to seal the side connector of the sealing box combination and the adjacent photovoltaic panel, the position of the central photovoltaic panel frame and the photovoltaic cell is kept stable by the sealing gasket, and at the same time cooperates with the clamping piece, which is beneficial to long-term protective sealing and limiting work.

[0012] Preferably, a mounting plate is installed at the rear end of the fastener, and the mounting plate and the fastener are fixedly connected to the two side connectors by fixing screws, and a rotating handle is installed at the front end of the fastener, and a threaded rod is installed at the rear end of the rotating handle, and the rotating handle drives the threaded rod to rotate by rotating the rotating handle, and the threaded rod drives the conical seal to move, and during the movement of the conical seal, the sealing gaskets on both sides are squeezed, so that the photovoltaic cell is fully sealed with the central photovoltaic panel frame and the side photovoltaic panel frame.

[0013] Preferably, the threaded rod is fixedly connected to the rotating handle, and both ends of the threaded rod are rotatably connected to the mounting plate and the fastener through bearings respectively, the threaded rod passes through the conical seal and is threadedly connected to the conical seal, and both sides of the conical seal are slidably connected to the side connecting piece through guide grooves, and the conical seal is used to extrude the sealing gasket strip so that the sealing gasket strip fully contacts the photovoltaic panel, thereby improving the working effect, having a simple structure, being conducive to adjustment work, facilitating maintenance and overhaul, and having strong adaptability.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The sealed connection structure of the present invention adopts a combined installation of clamps and fasteners to install, fix and seal the central photovoltaic panel frame and the side photovoltaic panel frame. The conductive wires are fully squeezed by the sealing gasket strips so that the conductive wires are fully protected on the outside of the central photovoltaic panel frame and the side photovoltaic panel frame. The connection effect is good, and the edge anti-seepage effect is improved. The structural position is stable, which is conducive to long-term work.

[0016] 2. During the installation process of the sealing connection structure of the present invention, fasteners are installed at the joint gap positions that need to be sealed, and the fasteners and the mounting plate are fixed between the central photovoltaic panel frame and the side photovoltaic panel frame. The rotating handle is rotated to drive the threaded rod to rotate, and the threaded rod drives the conical seal to move. During the movement of the conical seal, the sealing gaskets on both sides are squeezed, so that the photovoltaic cells and the central photovoltaic panel frame and the side photovoltaic panel frame are fully sealed, thereby improving the working effect. The structure is simple, which is conducive to adjustment work, convenient for maintenance and overhaul, and has strong adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is an axonometric view of the present invention from the front;

[0018] Figure 2 is an axonometric view of the present invention from the rear;

[0019] Figure 3 is an axonometric view of the front view of the clamp and the fastener of the present invention;

[0020] Figure 4 For the present invention Figure 3 A partial enlarged view of area A in the middle;

[0021] Figure 5 is an axonometric view of a side view of the clamping member of the present invention;

[0022] Figure 6 For the present invention Figure 5 A partial enlarged view of area B in the middle.

[0023] In the figure: 1. central photovoltaic panel frame; 101. photovoltaic cell; 2. side photovoltaic panel frame; 3. clamping part; 301. wire entry hole; 302. sealing gasket strip; 303. connecting groove; 304. pressure spring; 305. spring pressure rod; 4. side connecting part; 5. fastener; 501. rotating handle; 502. mounting plate; 503. conical seal; 504. threaded rod. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] Embodiment 1:

[0026] In order to solve the problem that the existing photovoltaic panel sealing structure cannot maintain a stable connection structure during actual use, affecting long-term work, please refer to Figure 1 - Figure 2 , this embodiment provides the following technical solutions:

[0027] The combined sealing structure for preventing water seepage in the splicing gap of photovoltaic panels includes a central photovoltaic panel frame 1, a clamping member 3 and a fastener 5. Side photovoltaic panel frames 2 are arranged on both sides of the central photovoltaic panel frame 1. The clamping member 3 is arranged at the upper and lower ends of the central photovoltaic panel frame 1 and the side photovoltaic panel frame 2. Side connecting members 4 are installed on one side of the side photovoltaic panel frame 2 and both sides of the central photovoltaic panel frame 1, and the fastener 5 is installed at the front end of the side connecting member 4. A conical sealing member 503 for preventing water seepage is installed inside the fastener 5. The sealing connection structure adopts a combined installation of the clamping member 3 and the fastener 5 to install, fix and seal the central photovoltaic panel frame 1 and the side photovoltaic panel frame 2.

[0028] Photovoltaic cells 101 are disposed inside the central photovoltaic panel frame 1 and the side photovoltaic panel frame 2 , and conductive wires for electrical connection are disposed at the upper and lower ends of the photovoltaic cells 101 .

[0029] In addition, an integrally formed wire entry hole 301 is provided on the outer surface of the clamp 3 , and the wires of the photovoltaic cell 101 pass through the wire entry hole 301 and extend to the outside of the clamp 3 to be fixedly connected to the clamp 3 .

[0030] In addition, a sealing gasket strip 302 is provided on the inner side of the clamping part 3. The sealing gasket strip 302 is embedded in the interior of the central photovoltaic panel frame 1 and the side photovoltaic panel frame 2 and is sealed and connected to the photovoltaic cell 101. The conductive wire is fully squeezed by the sealing gasket strip 302 so that the conductive wire is fully protected on the outside of the central photovoltaic panel frame 1 and the side photovoltaic panel frame 2. The connection effect is good, the edge anti-seepage effect is improved, the structural position is stable, and it is conducive to long-term work.

[0031] Specifically, the sealed connection structure adopts a combined installation of clamps 3 and fasteners 5 to install, fix and seal the central photovoltaic panel frame 1 and the side photovoltaic panel frame 2. The conductive wires are fully squeezed by the sealing gasket strip 302 so that the conductive wires are fully protected on the outside of the central photovoltaic panel frame 1 and the side photovoltaic panel frame 2. The connection effect is good, and the edge anti-seepage effect is improved. The structural position is stable, which is conducive to long-term operation.

[0032] Embodiment 2:

[0033] In order to solve the problem that the sealing structure of the existing photovoltaic panel is not stable in position and the positioning of the wire is not good during actual use, please refer to Figure 1 - Figure 2 , Figure 5 - Figure 6 , this embodiment provides the following technical solutions:

[0034] The combined sealing structure for preventing water seepage in the splicing gap of photovoltaic panels includes a central photovoltaic panel frame 1, a clamping member 3 and a fastener 5. Side photovoltaic panel frames 2 are arranged on both sides of the central photovoltaic panel frame 1. The clamping member 3 is arranged at the upper and lower ends of the central photovoltaic panel frame 1 and the side photovoltaic panel frame 2. Side connecting members 4 are installed on one side of the side photovoltaic panel frame 2 and both sides of the central photovoltaic panel frame 1, and the fastener 5 is installed at the front end of the side connecting member 4. A conical sealing member 503 for preventing water seepage is installed inside the fastener 5. The sealing connection structure adopts a combined installation of the clamping member 3 and the fastener 5 to install, fix and seal the central photovoltaic panel frame 1 and the side photovoltaic panel frame 2.

[0035] In addition, an integrally formed connecting groove 303 is provided inside the clamping member 3, and both ends of the sealing strip 302 are fixedly connected to the connecting groove 303. The four corners of the central photovoltaic panel frame 1 and the side photovoltaic panel frame 2 are wrapped and limited by the connecting groove 303, so as to adapt to the relative length of the sealing strip 302 and keep the position of the sealing strip 302 stable.

[0036] In addition, a spring pressure rod 305 is installed inside the connecting groove 303. The diameter of the lower end of the spring pressure rod 305 is the same as the inner circle diameter of the wire entry hole 301, and a pressure spring 304 is installed between the spring pressure rod 305 and the sealing pad 302. The two ends of the pressure spring 304 are welded to the spring pressure rod 305 and the clamping member 3 respectively. During long-term operation, the wire inside the wire entry hole 301 is continuously squeezed by the spring pressure rod 305 to fully seal the wire entry hole 301 to improve the working effect.

[0037] In addition, the side connecting piece 4 is embedded in the outer side of the central photovoltaic panel frame 1 and the side photovoltaic panel frame 2 and is engaged with the central photovoltaic panel frame 1 and the side photovoltaic panel frame 2. The sealing gasket strip 302 passes through the side connecting piece 4 and is fitted with the side connecting piece 4. The sealing gasket strip 302 is used to seal the side connecting piece 4 of the sealing box combination and the adjacent photovoltaic panel. The position of the central photovoltaic panel frame 1 and the photovoltaic cell 101 is kept stable by the sealing gasket strip 302. At the same time, it cooperates with the clamping piece 3 to facilitate long-term protective sealing and limiting work.

[0038] Specifically, the central photovoltaic panel frame 1 and the side photovoltaic panel frame 2 are installed, fixed and sealed, and the four corners of the central photovoltaic panel frame 1 and the side photovoltaic panel frame 2 are wrapped and limited by the connecting groove 303 to adapt to the relative length of the sealing gasket 302, and keep the position of the sealing gasket 302 stable. The sealing gasket 302 is used to keep the position of the central photovoltaic panel frame 1 and the photovoltaic cell 101 stable, and at the same time cooperate with the clamping part 3, which is beneficial to long-term protective sealing and limiting work. During long-term work, the wires inside the wire entry hole 301 are continuously squeezed by the spring pressure rod 305 to fully seal the wire entry hole 301 to improve the working effect.

[0039] Embodiment 3:

[0040] In order to solve the problem that the existing photovoltaic panel sealing structure has poor working effect in actual use and cannot accurately adjust the protection work for different positions, please refer to Figure 1 - Figure 4 , this embodiment provides the following technical solutions:

[0041] The combined sealing structure for preventing water seepage in the splicing gap of photovoltaic panels includes a central photovoltaic panel frame 1, a clamping member 3 and a fastener 5. Side photovoltaic panel frames 2 are arranged on both sides of the central photovoltaic panel frame 1. The clamping member 3 is arranged at the upper and lower ends of the central photovoltaic panel frame 1 and the side photovoltaic panel frame 2. Side connecting members 4 are installed on one side of the side photovoltaic panel frame 2 and both sides of the central photovoltaic panel frame 1, and the fastener 5 is installed at the front end of the side connecting member 4. A conical sealing member 503 for preventing water seepage is installed inside the fastener 5. The sealing connection structure adopts a combined installation of the clamping member 3 and the fastener 5 to install, fix and seal the central photovoltaic panel frame 1 and the side photovoltaic panel frame 2.

[0042] In addition, a mounting plate 502 is installed at the rear end of the fastener 5, and the mounting plate 502 and the fastener 5 are fixedly connected to the two side connectors 4 by fixing screws. During the installation process of the sealing connection structure, the fastener 5 is installed at the position of the splicing gap where the sealing needs to be strengthened, and the fastener 5 and the mounting plate 502 are fixed between the central photovoltaic panel frame 1 and the side photovoltaic panel frame 2. A rotating handle 501 is installed at the front end of the fastener 5, and a threaded rod 504 is installed at the rear end of the rotating handle 501. By rotating the rotating handle 501, the rotating handle 501 drives the threaded rod 504 to rotate, and the threaded rod 504 drives the conical seal 503 to move. During the movement of the conical seal 503, the sealing gasket strips 302 on both sides are squeezed, so that the photovoltaic cell 101 is fully sealed with the central photovoltaic panel frame 1 and the side photovoltaic panel frame 2.

[0043] In addition, the threaded rod 504 is fixedly connected to the rotating handle 501, and both ends of the threaded rod 504 are rotatably connected to the mounting plate 502 and the fastener 5 respectively through bearings. The threaded rod 504 passes through the conical seal 503 and is threadedly connected to the conical seal 503. Both sides of the conical seal 503 are slidingly connected to the side connector 4 through guide grooves. The conical seal 503 is used to squeeze the sealing gasket strip 302 so that the sealing gasket strip 302 fully contacts the photovoltaic panel, thereby improving the working effect. The structure is simple, which is conducive to adjustment work, convenient for maintenance and overhaul, and has strong adaptability.

[0044] Specifically, during the installation process of the sealing connection structure, the fasteners 5 are installed at the locations of the splicing gaps that need to be sealed, and the fasteners 5 and the mounting plate 502 are fixed between the central photovoltaic panel frame 1 and the side photovoltaic panel frame 2. The rotating handle 501 is rotated, and the rotating handle 501 drives the threaded rod 504 to rotate, and the threaded rod 504 drives the conical seal 503 to move. During the movement of the conical seal 503, the sealing gasket strips 302 on both sides are squeezed, so that the photovoltaic cell 101 is fully sealed with the central photovoltaic panel frame 1 and the side photovoltaic panel frame 2, thereby improving the working effect. The structure is simple, which is conducive to adjustment work, convenient for maintenance and overhaul, and has strong adaptability.

[0045] Working principle: When in use, install the fastener 5 at the position of the splicing gap that needs to be strengthened in sealing, fix the fastener 5 and the mounting plate 502 between the central photovoltaic panel frame 1 and the side photovoltaic panel frame 2, and rotate the rotating handle 501, the rotating handle 501 drives the threaded rod 504 to rotate, and the threaded rod 504 drives the conical seal 503 to move. During the movement of the conical seal 503, the sealing gasket strips 302 on both sides are squeezed, so that the photovoltaic cell 101 and the central photovoltaic panel frame 1 and the side photovoltaic panel frame 2 are fully sealed, thereby improving the working effect, having a simple structure, being conducive to adjustment work, convenient for maintenance and overhaul, and having strong adaptability. The four corners of the central photovoltaic panel frame 1 and the side photovoltaic panel frame 2 are wrapped and limited by the connecting groove 303, thereby adapting to the relative length of the sealing gasket. Strip 302, keep the sealing gasket strip 302 in a stable position, the sealing gasket strip 302 keeps the position of the central photovoltaic panel frame 1 and the photovoltaic cell 101 stable, and cooperates with the clamping piece 3, which is beneficial to long-term protective sealing and limiting work. During long-term work, the wires inside the wire entry hole 301 are continuously squeezed by the spring pressure rod 305 to fully seal the wire entry hole 301 to improve the working effect. The sealing connection structure adopts a combined installation of the clamping piece 3 and the fastener 5 to install, fix and seal the central photovoltaic panel frame 1 and the side photovoltaic panel frame 2. The conductive wire is fully squeezed by the sealing gasket strip 302, so that the conductive wire is fully protected on the outside of the central photovoltaic panel frame 1 and the side photovoltaic panel frame 2, the connection effect is good, and the edge anti-seepage effect is improved. The structural position is stable, which is beneficial to long-term work.

[0046] 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", "comprises" or any other variations 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.

[0047] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A combined sealing structure for preventing water seepage in the joint gap of photovoltaic panels, comprising a central photovoltaic panel frame (1), a clamping member (3) and a fastener (5), characterized in that: Side photovoltaic panel frames (2) are provided on both sides of the central photovoltaic panel frame (1), the clamping parts (3) are provided at the upper and lower ends of the central photovoltaic panel frame (1) and the side photovoltaic panel frames (2), one side of the side photovoltaic panel frame (2) and both sides of the central photovoltaic panel frame (1) are installed with side connecting parts (4), and the fasteners (5) are installed at the front ends of the side connecting parts (4), and a conical sealing part (503) for preventing water seepage is installed inside the fasteners (5).

2. The anti-water seepage combined sealing structure in the joint gap of photovoltaic panels according to claim 1, characterized in that: Photovoltaic cells (101) are arranged inside the central photovoltaic panel frame (1) and the side photovoltaic panel frame (2), and conductive wires for electrical connection are arranged at the upper and lower ends of the photovoltaic cells (101).

3. The anti-water seepage combined sealing structure in the joint gap of photovoltaic panels according to claim 2, characterized in that: The outer surface of the clamping member (3) is provided with an integrally formed wire entry hole (301), and the wire of the photovoltaic cell (101) passes through the wire entry hole (301) and extends to the outside of the clamping member (3) to be fixedly connected to the clamping member (3).

4. The anti-water seepage combined sealing structure in the joint gap of photovoltaic panels according to claim 1, characterized in that: A sealing gasket strip (302) is provided on the inner side of the clamping member (3), and the sealing gasket strip (302) is embedded in the interior of the central photovoltaic panel frame (1) and the side photovoltaic panel frame (2) and is sealedly connected to the photovoltaic cell (101). An integrally formed connecting groove (303) is provided inside the clamping member (3), and both ends of the sealing gasket strip (302) are fixedly connected to the connecting groove (303).

5. The anti-water seepage combined sealing structure in the joint gap of photovoltaic panels according to claim 4, characterized in that: A spring pressure rod (305) is installed inside the connecting groove (303), the diameter of the lower end of the spring pressure rod (305) is the same as the inner circle diameter of the wire entry hole (301), and a pressure spring (304) is installed between the spring pressure rod (305) and the sealing gasket strip (302), and the two ends of the pressure spring (304) are respectively welded to the spring pressure rod (305) and the clamping member (3).

6. The anti-water seepage combined sealing structure in the joint gap of photovoltaic panels according to claim 4, characterized in that: The side connecting piece (4) is embedded in the outer sides of the central photovoltaic panel frame (1) and the side photovoltaic panel frame (2) and is engaged with the central photovoltaic panel frame (1) and the side photovoltaic panel frame (2); the sealing gasket strip (302) passes through the side connecting piece (4) and is in contact with the side connecting piece (4); the sealing gasket strip (302) is used to seal the side connecting piece (4) of the sealing box combination and the adjacent photovoltaic panel.

7. The anti-water seepage combined sealing structure in the joint gap of photovoltaic panels according to claim 1, characterized in that: A mounting plate (502) is installed at the rear end of the fastener (5), and the mounting plate (502) and the fastener (5) are fixedly connected to the two side connecting members (4) via fixing screws, and a rotating handle (501) is installed at the front end of the fastener (5), and a threaded rod (504) is installed at the rear end of the rotating handle (501).

8. The anti-water seepage combined sealing structure in the joint gap of photovoltaic panels according to claim 7, characterized in that: The threaded rod (504) is fixedly connected to the rotating handle (501), and both ends of the threaded rod (504) are rotatably connected to the mounting plate (502) and the fastener (5) respectively through bearings. The threaded rod (504) passes through the conical seal (503) and is threadedly connected to the conical seal (503). Both sides of the conical seal (503) are slidably connected to the side connector (4) through guide grooves. The conical seal (503) is used to squeeze the sealing gasket strip (302) so that the sealing gasket strip (302) fully contacts the photovoltaic panel.

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