Salt mist resistant high corrosion protection frame type photovoltaic module

Abstract

The application relates to the technical field of frame-type photovoltaic modules, in particular to a salt-fog-resistant high-corrosion-resistance frame-type photovoltaic module, which comprises an outer protection mechanism, two groups of plate surface sealing mechanisms symmetrically arranged in the outer protection mechanism and a plate joint anti-seepage mechanism arranged in the outer protection mechanism; the outer protection mechanism comprises an aluminum frame, a plurality of uniformly distributed conical holes are formed in the outer wall of the aluminum frame, a pull spring is fixedly arranged in the conical hole, and a plug is arranged at the other end of the pull spring. By optimizing the structure of the inner wall of the traditional aluminum frame, four limiting protrusions symmetrically arranged are additionally arranged on the inner wall of the preloading groove of the aluminum frame, and a plate surface sealing mechanism is arranged outside the adjacent two limiting protrusions; when the glass cover plate and the sealing plate in the stacked state are inserted into the gap between the two groups of plate surface sealing mechanisms, the plate surface sealing mechanism with the reverse pressure boosting can further enhance the penetration protection of the inner wall of the aluminum frame, and the waterproof and anti-seepage protection of the photovoltaic plate joint after stacking is further improved.

Description

Technical Field

[0001] This invention relates to the field of framed photovoltaic module technology, specifically to a salt spray resistant and highly corrosion-resistant framed photovoltaic module. Background Technology

[0002] The frame of a photovoltaic module is a structural component that mounts the edge of a solar panel. It is mainly used for fixing, sealing, enhancing mechanical strength, and facilitating installation and transportation. The lifespan of a photovoltaic module is mainly affected by the performance of its outer aluminum frame.

[0003] Currently, the outer surfaces of the glass cover and sealing plate that make up the photovoltaic module need to be fitted and pressed tightly onto the inner wall of the aluminum frame. However, the inner wall of the pre-installed groove of the aluminum frame has a high degree of smoothness. Therefore, after the glass cover and sealing plate are stacked, an adhesive is needed to achieve a seal. However, during actual use, since the photovoltaic module is exposed to the environment for a long time, if there are corrosive factors in the environment, the aluminum frame will be penetrated by corrosive particles, which will cause the photovoltaic panel seam to be not sealed properly. In severe cases, it will cause damage to the photovoltaic module.

[0004] In view of this, a salt spray resistant and highly corrosion-resistant framed photovoltaic module was designed to solve the above problems. Summary of the Invention

[0005] The present invention aims to solve one of the technical problems existing in the prior art or related technologies.

[0006] Therefore, the technical solution adopted in this invention is as follows: A salt spray resistant and highly corrosion-resistant framed photovoltaic module includes an outer protective mechanism, two sets of symmetrically distributed panel sealing mechanisms installed within the outer protective mechanism, and a panel seam waterproofing mechanism installed within the outer protective mechanism. The outer protective mechanism includes an aluminum frame with multiple evenly distributed conical holes on its outer wall, each containing a tension spring. A plug is installed at the other end of each tension spring. A horizontal slot is provided inside the aluminum frame, and the inner wall of the aluminum frame has a first, second, third, and fourth symmetrically distributed limiting protrusions along the vertical direction. The panel sealing mechanism includes two gaskets and two reinforcing back plates. One gasket is movably installed outside adjacent first and third limiting protrusions, and the other gasket is movably installed outside adjacent second and fourth limiting protrusions. A pressure-increasing soft pad is provided at the inner end of each gasket, and an arc-shaped concave surface is provided at the outer end of each gasket.

[0007] In a preferred embodiment, the present invention can be further configured such that: the inner wall of the transverse slot has four transverse grooves, and a first sealing strip is installed in the transverse groove, wherein the number of the first sealing strips is four.

[0008] In a preferred embodiment, the present invention can be further configured such that the plug is composed of a column head and a frustum-shaped disc head, wherein the column head is adapted to penetrate into the tension spring, and a rubber gasket is fixedly installed on the inclined surface of the frustum-shaped disc head.

[0009] In a preferred embodiment, the present invention may be further configured such that: the surface of the reinforced back plate away from the joint seepage prevention mechanism is provided with a back plate top groove, and the surface of the reinforced back plate facing the joint seepage prevention mechanism is provided with two evenly distributed back plate bottom grooves, and the back plate bottom grooves are adapted to be snapped onto the rectangular strip outside the pad. The pad has three slots, and a second sealing strip is installed in each slot. The total number of slots is six.

[0010] In a preferred embodiment, the invention may be further configured such that the pressure pad is made of thickened rubber material, and the side of the pressure pad facing the inner wall of the aluminum frame has a rounded corner structure to enhance the smoothness of the pressure pad extending along the inner wall of the aluminum frame.

[0011] In a preferred embodiment, the present invention can be further configured such that the third limiting protrusion and the fourth limiting protrusion are adapted to be snapped into the top grooves of the two back plates, and the outer side of the pad is provided with a rectangular assembly groove, the width of which is twice the width of the first limiting protrusion and the second limiting protrusion.

[0012] In a preferred embodiment, the present invention can be further configured as follows: the plate joint seepage prevention mechanism includes a horizontal insert plate inserted into the horizontal slot, the horizontal insert plate having two drainage holes inside, a pressure-bearing baffle plate installed on the plate segment extending from the horizontal insert plate to the outside of the horizontal slot, and two symmetrically distributed third sealing strips installed at the top and bottom of the pressure-bearing baffle plate, with the third sealing strips bearing pressure on the protective pad.

[0013] In a preferred embodiment, the present invention can be further configured as follows: the pressure-bearing baffle has an internal cavity, four evenly distributed fixing blocks are fixedly installed in the internal cavities at both ends of the pressure-bearing baffle, and a cover plate is provided at the outer end of the pressure-bearing baffle. Four reinforcing bolts are inserted into the cover plate, and the reinforcing bolts are threaded into the fixing blocks. A drainage groove is provided on the surface of the pressure-bearing baffle facing the aluminum frame, and the drainage groove is connected to the cavity, which is connected to the drain hole.

[0014] In a preferred embodiment, the present invention can be further configured as follows: four symmetrically distributed second elastic support plates are fixedly installed on the pressure-bearing baffle, and horizontal pressure-increasing strips are installed at the outer ends of two adjacent second elastic support plates. There are two pressure-increasing strips, and the outer ends of the pressure-increasing strips are provided with inclined structures that are adapted to and bear pressure on the pressure-increasing pad.

[0015] In a preferred embodiment, the present invention may be further configured such that: a first elastic support plate is provided inside the cavity, and the two sides of the first elastic support plate are inserted into the gap between two fixed blocks and a pressure-bearing baffle; an internal plug is installed at the outer end of the first elastic support plate, and the other side of the internal plug is adapted to bear pressure on the inner port of the drainage groove.

[0016] By adopting the above technical solution, the beneficial effects achieved by the present invention are as follows: 1. This invention optimizes the structure of the inner wall of the traditional aluminum frame by adding four symmetrically distributed limiting protrusions to the inner wall of the pre-installed groove of the aluminum frame, and setting a panel sealing mechanism outside two adjacent limiting protrusions. When the stacked glass cover and sealing plate are inserted into the gap between the two sets of panel sealing mechanisms, the reverse pressure panel sealing mechanism can further enhance the anti-penetration protection of the inner wall of the aluminum frame and further improve the waterproof and seepage prevention protection of the photovoltaic panel seam after stacking.

[0017] 2. This invention optimizes the structure by creating a horizontal slot inside the aluminum frame and inserting a horizontally placed plate into the slot. A pressure-bearing baffle is also placed in the gap between the two sets of plate sealing mechanisms. When corrosive particles in the environment penetrate the aluminum frame, rainwater that accidentally enters the gaps in the aluminum frame can be transferred to the cavity through the drainage channel. Finally, under the action of water pressure, multiple plugs will be pushed out of the conical hole, and the rainwater that accidentally enters the gaps in the aluminum frame can be effectively drained, avoiding the risk of corrosion of the photovoltaic panel edges due to rainwater residue.

[0018] 3. This invention installs three evenly distributed second sealing strips in the grooves within the arc-shaped plate segment at the inner end of the protective pad, and installs evenly distributed third sealing strips at both ends of the pressure-bearing baffle. When the photovoltaic panels are stacked and inserted into the gap between the two sets of panel sealing mechanisms, the two sets of pressure-enhancing soft pads and protective pads that extend outward under pressure can further increase the shielding and protection area on the sides of the glass cover and sealing plate, thereby enhancing the sealing strength of the gap between the photovoltaic module and the frame. Attached Figure Description

[0019] Figure 1 This is a schematic diagram illustrating the use of the present invention; Figure 2 This is a three-dimensional schematic diagram of the present invention; Figure 3 For the present invention Figure 2 An explosion diagram; Figure 4 This is a schematic diagram of the external protective mechanism of the present invention; Figure 5 For the present invention Figure 4 Enlarged view of point A in the middle; Figure 6 For the present invention Figure 3 A partial diagram of the explosion; Figure 7 This is an exploded view of the plate sealing mechanism of the present invention; Figure 8 This is a schematic diagram of the anti-seepage mechanism for the joints of the plates according to the present invention; Figure 9 For the present invention Figure 8 Enlarged view of point B in the middle; Figure 10 For the present invention Figure 8 Explosion-proof diagram of a partial cross-section.

[0020] Figure label: 100. External protective mechanism; 110. Aluminum frame; 1101. First limiting protrusion; 1102. Second limiting protrusion; 1103. Third limiting protrusion; 1104. Fourth limiting protrusion; 1105. Horizontal slot; 1106. Horizontal groove; 1107. Tapered hole; 120. First sealing strip; 130. Tension spring; 140. Plug; 200. Panel sealing mechanism; 210. Protective gasket; 2101. Slot; 220. Second sealing strip; 230. Pressure-increasing soft pad; 240. Reinforcing back plate; 2401. Back plate bottom groove; 2402. Back plate top groove; 300. Joint seepage prevention mechanism; 310. Pressure baffle; 3101. Cavity; 3102. Fixing block; 3103. Drainage groove; 320. First elastic support plate; 330. Internal plug; 340. Second elastic support plate; 350. Pressure boosting strip; 360. Horizontal insert plate; 3601. Drainage hole; 370. Cover plate; 3701. Reinforcing bolt; 380. Third sealing strip. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0022] It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the invention.

[0023] The following describes, with reference to the accompanying drawings, some embodiments of the present invention, providing a salt spray resistant and highly corrosion-resistant framed photovoltaic module. Example

[0024] Combination Figures 1 to 10As shown, the present invention provides a salt spray resistant and highly corrosion-resistant framed photovoltaic module, including an outer protective mechanism 100, two sets of panel sealing mechanisms 200 installed inside the outer protective mechanism 100 and symmetrically distributed, and a panel seam anti-seepage mechanism 300 installed inside the outer protective mechanism 100. The outer protective mechanism 100 is used to enhance the protection strength of the edge seams of the stacked photovoltaic panels, the two sets of panel sealing mechanisms 200 are used to enhance the protection against the penetration of corrosive particles, and further improve the anti-seepage protection of the glass cover and the sides of the sealing plate. The panel seam anti-seepage mechanism 300 works with the two sets of panel sealing mechanisms 200 to provide anti-seepage protection against accidentally injected rainwater.

[0025] The outer protective mechanism 100 includes an aluminum frame 110. The outer wall of the aluminum frame 110 has a plurality of evenly distributed tapered holes 1107, and a tension spring 130 is fixedly installed in the tapered holes 1107. A plug 140 is installed at the other end of the tension spring 130. A horizontal slot 1105 is provided inside the aluminum frame 110. The inner wall of the aluminum frame 110 is provided with a first limiting protrusion 1101, a second limiting protrusion 1102, a third limiting protrusion 1103 and a fourth limiting protrusion 1104 that are symmetrically distributed in the vertical direction. The inner wall of the horizontal slot 1105 is provided with four horizontal slots 1106, and a first sealing strip 120 is installed in the horizontal slot 1106. The number of the first sealing strips 120 is four. The plug 140 consists of a column head and a frustum-shaped disc head, with the column head fitting through the tension spring 130, and a rubber gasket fixedly installed on the inclined surface of the frustum-shaped disc head. The panel sealing mechanism 200 includes two pads 210 and two reinforcing back plates 240. One pad 210 is movably installed outside the adjacent first limiting protrusion 1101 and third limiting protrusion 1103, and the other pad 210 is movably installed outside the adjacent second limiting protrusion 1102 and fourth limiting protrusion 1104. The inner end of the pad 210 is provided with a pressure-increasing soft pad 230, and the outer end of the pad 210 is provided with an arc-shaped concave surface.

[0026] Preferably, the corner area in the pre-installed groove on the inner side of the aluminum frame 110 has an arc-shaped structure, and the rounded corner of the outer side of the pressure pad 230 is adapted to fit into the arc-shaped corner on the inner side of the aluminum frame 110. The ends of the three plate segments on the inner side of the aluminum frame 110 are all rounded to reduce the risk of wear on the outer surface of the glass cover and the sealing plate. The conical hole 1107 has a funnel-shaped structure and is connected to the horizontal slot 1105. The inner end of the tension spring 130 is fixedly installed on the inner wall of the conical hole 1107, and the outer end of the tension spring 130 is fixedly installed on the frustum-shaped plate. Under the elastic traction of the tension spring 130, the rubber gasket on the inner inclined surface of the frustum-shaped plate can enhance the sealing of the conical hole 1107. In addition, the protective pad 210 extends through the outer part of the aluminum frame 110 to enhance the sealing area on the outer surface of the glass cover or sealing plate. This can effectively improve the protective performance of the glass cover or sealing plate assembled in the aluminum frame 110 and further improve the compressive strength of the side of the photovoltaic panel after stacking. Example

[0027] Combination Figures 4 to 7 As shown, based on Embodiment 1, the reinforced back plate 240 has a back plate top groove 2402 on the plate surface away from the plate joint seepage prevention mechanism 300, and two evenly distributed back plate bottom grooves 2401 on the plate surface of the reinforced back plate 240 facing the plate joint seepage prevention mechanism 300, and the back plate bottom grooves 2401 are adapted to be snapped onto the rectangular strip outside the pad 210. The pad 210 has three slots 2101 inside, and a second sealing strip 220 is installed in the slots 2101. The number of slots 2101 is six. The pressure pad 230 is made of thickened rubber material, and the side of the pressure pad 230 facing the inner wall of the aluminum frame 110 has a rounded corner structure to enhance the smoothness of the pressure pad 230 extending along the inner wall of the aluminum frame 110. The third limiting protrusion 1103 and the fourth limiting protrusion 1104 are adapted to be snapped into the two back plate top grooves 2402. The outer side of the pad 210 is provided with a rectangular assembly groove, and the width of the rectangular assembly groove is twice the width of the first limiting protrusion 1101 and the second limiting protrusion 1102.

[0028] Preferably, the side of the pad 210 with the arc-shaped concave surface is provided with a plate segment adapted to bear the pressure on the inner port of the aluminum frame 110, which is used to enhance the anti-squeezing protection of the inner port of the aluminum frame 110, and at the same time avoid the problem of wear on the outer surface of the glass cover or sealing plate caused by the accumulation of dirt on the inner port of the aluminum frame 110. Among them, the two sets of protective pads 210 and pressure-boosting pads 230 have L-shaped cross sections, which are used to enhance the stability of the sides of the stacked photovoltaic panels and improve the sealing of the side seams of the photovoltaic panels while expanding the shading area. Example

[0029] Combination Figures 4 to 9As shown, in the above embodiment, the plate joint seepage prevention mechanism 300 includes a horizontally placed insert plate 360 ​​inserted into the horizontal slot 1105. The horizontally placed insert plate 360 ​​has two drainage holes 3601 inside. A pressure-bearing baffle 310 is installed on the plate segment of the horizontally placed insert plate 360 ​​that extends to the outside of the horizontal slot 1106. Two symmetrically distributed third sealing strips 380 are installed at the top and bottom of the pressure-bearing baffle 310, and the third sealing strips 380 are pressed against the protective gasket 210. A cavity is formed inside the pressure-bearing baffle 310. 3101, four evenly distributed fixing blocks 3102 are fixedly installed in the inner cavities at both ends of the pressure baffle 310, and a cover plate 370 is provided at the outer end of the pressure baffle 310. Four reinforcing bolts 3701 are inserted into the cover plate 370. The reinforcing bolts 3701 are threaded into the fixing blocks 3102. A drainage groove 3103 is opened on the plate surface of the pressure baffle 310 facing the aluminum frame 110, and the drainage groove 3103 is connected to the cavity 3101. The cavity 3101 is connected to the drain hole 3601. Preferably, a rectangular hole is provided in the middle of the inner cavity of the pressure baffle 310, which connects to two cavities 3101. The rectangular hole connects to two drain holes 3601. Therefore, when corrosive particles in the environment penetrate the aluminum frame 110, rainwater flows into the corroded aluminum frame 110 with holes. The rainwater will enter the cavity 3101 along the drainage groove 3103. Finally, the rainwater will be transferred to the two drain holes 3601 along the rectangular hole. Since the photovoltaic panel side applies constant pressure to the pressure baffle 310, the hydraulic pressure increases and drives the rainwater in the drain holes 3601 out from the horizontal slot 1105 and multiple conical holes 1107, thereby ensuring that the photovoltaic panel side assembled between the pressure baffle 310 and the two pads 210 is protected against water and corrosion.

[0030] Four symmetrically distributed second elastic support plates 340 are fixedly installed on the pressure baffle 310. A horizontal pressure bar 350 is installed at the outer end of two adjacent second elastic support plates 340. There are two pressure bars 350. The outer end of the pressure bar 350 is provided with an inclined structure that is adapted to and bears pressure on the pressure pad 230. The cavity 3101 is provided with a first elastic support plate 320, and the two sides of the first elastic support plate 320 are inserted into the gap between the two fixing blocks 3102 and the pressure baffle 310. The outer end of the first elastic support plate 320 is equipped with an internal plug 330, and the other side of the internal plug 330 is adapted to bear pressure on the inner port of the drainage groove 3103.

[0031] Preferably, the outer surface of the second elastic support plate 340 has an arc-shaped structure. When the pressure-bearing baffle 310 is pressed by the side of the photovoltaic panel and moves laterally toward the inside of the aluminum frame 110, the pressure-bearing baffle 310 will squeeze the four second elastic support plates 340 until the four second elastic support plates 340 deform and push the two pressure bars 350 to extend outward. At this time, the two sets of protective pads 210 and pressure-boosting pads 230 will be pressed and extend outward along the groove on the inside of the aluminum frame 110, thereby expanding the pressure-bearing and protection area of ​​the side of the photovoltaic panel and further improving the sealing performance between the glass cover and the sealing plate and the aluminum frame 110.

[0032] The working principle and usage process of this invention are as follows: two cover plates 370 are pre-fixed to the ports at both ends of the pressure baffle 310 using adhesive, and then multiple reinforcing bolts 3701 are used to fix the two cover plates 370 to both ends of the pressure baffle 310 until both ends of the pressure baffle 310 are effectively sealed. Then, the combined pressure baffle 310 and horizontal insert 360 are inserted horizontally along the port at one end of the horizontal slot 1105 until the horizontal insert 360 is fully inserted into the interior of the horizontal slot 1105. The inner cavity of the drain hole 3601 will be in communication with the multiple evenly distributed conical holes 1107. The tension spring 130 fixed on the inner wall of the conical hole 1107 will tighten the plug 140 and fit it into the inner cavity of the conical hole 1107. In the initial state, the multiple plugs 140 can seal the multiple conical holes 1107. Next, the two sets of panel sealing mechanisms 200 are laterally inserted along the port of one end of the aluminum frame 110 until the two sets of panel sealing mechanisms 200 are laterally inserted along the gap between the port of one end of the aluminum frame 110 and the pressure baffle 310. Finally, the two sets of panel sealing mechanisms 200 can cooperate with the pressure baffle 310 to form a U-shaped structure. Then, a back plate is arranged on the upper surface of the sealing plate, and a busbar and solar cells are assembled on the upper surface of the back plate. The busbar extends through the ends of the back plate and the sealing plate. Then, a filler is placed on the upper surface of the solar cells, and a glass cover is added on the upper surface of the filler. The stacked photovoltaic... The side of the module can be assembled along the U-shaped groove constructed by the pressure baffle 310 and the two sets of plate sealing mechanisms 200 until the aluminum frame 110 is pressed and tightly installed on the side of the photovoltaic module. At this time, after the photovoltaic module applies pressure to the pressure baffle 310, the pressure baffle 310, together with the horizontal insert plate 360, can be inserted into the horizontal slot 1105. The four pressure-bearing second elastic support plates 340 will push the two pressure bars 350 to move laterally along the inner wall of the aluminum frame 110. Finally, the two sets of pressure-bearing soft pads 230 and protective pads 210 will be pressed and extend outward, so that the edge seams of the upper and lower surfaces of the photovoltaic module can be further strengthened and sealed to improve the strength of the anti-seepage. In actual use, when the photovoltaic module is in a humid and high-salt-spray corrosive environment, corrosive particles can penetrate the aluminum frame 110 and enter its inner gaps due to prolonged use. Accidentally injected liquid can flow along the pressure baffle 310 towards the drainage groove 3103 on the surface of the aluminum frame 110. Eventually, the liquid will be transferred through the drainage groove 3103 into the cavity 3101. The liquid in the cavity 3101 will converge into the rectangular hole in the middle of the pressure baffle 310 and enter the drain hole 3601. The liquid will then flow along the drain hole 3601 and the horizontal slot 1105 into multiple conical holes 1107. With the photovoltaic module applying pressure to the pressure baffle 310 and the increase in hydraulic pressure, multiple plugs 140 will eventually extend outward under hydraulic pressure, allowing the liquid to be released quickly. This process can effectively improve the anti-seepage and anti-corrosion protection of the side plate seams of the stacked photovoltaic module, further improving the service life of the photovoltaic module.

[0033] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A salt spray resistant and highly corrosion-resistant framed photovoltaic module, characterized in that, include: The outer protective mechanism (100) includes an aluminum frame (110), and the inner wall of the aluminum frame (110) is provided with a first limiting protrusion (1101), a second limiting protrusion (1102), a third limiting protrusion (1103) and a fourth limiting protrusion (1104) symmetrically distributed in the vertical direction. The outer wall of the aluminum frame (110) is provided with a plurality of evenly distributed conical holes (1107), a tension spring (130) is fixedly installed in the conical hole (1107), a plug (140) is installed at the other end of the tension spring (130), and a horizontal slot (1105) is provided inside the aluminum frame (110). The inner wall of the horizontal slot (1105) is provided with a horizontal groove (1106), and a first sealing strip (120) is installed in the horizontal groove (1106). The plug (140) is composed of a column head and a frustum-shaped disc head. The column head is adapted to penetrate into the tension spring (130), and a rubber gasket is fixedly installed on the inclined surface of the frustum-shaped disc head. The panel sealing mechanism (200) is provided in two sets and is symmetrically installed inside the outer protective mechanism (100); The joint waterproofing mechanism (300) is installed inside the outer protective mechanism (100); The panel sealing mechanism (200) includes two pads (210) and two reinforcing back plates (240), one of the pads (210) is movably installed outside the adjacent first limiting protrusion (1101) and third limiting protrusion (1103), and the other pad (210) is movably installed outside the adjacent second limiting protrusion (1102) and fourth limiting protrusion (1104); The reinforcing back plate (240) has a back plate top groove (2402) on the plate surface away from the plate joint seepage prevention mechanism (300), and a back plate bottom groove (2401) on the plate surface facing the plate joint seepage prevention mechanism (300). The back plate bottom groove (2401) is adapted to be snapped onto a rectangular strip outside the pad (210).

2. The salt spray resistant and highly corrosion-resistant framed photovoltaic module according to claim 1, characterized in that, The inner end of the pad (210) is provided with a pressure-increasing soft pad (230), and the outer end of the pad (210) is provided with an arc-shaped concave surface. The pad (210) has a slot (2101) inside, and a second sealing strip (220) is installed in the slot (2101). The pressurizing pad (230) is made of thickened rubber material, and the side of the pressurizing pad (230) facing the inner wall of the aluminum frame (110) has a rounded corner structure.

3. The salt spray resistant and highly corrosion-resistant framed photovoltaic module according to claim 1, characterized in that, The third limiting protrusion (1103) and the fourth limiting protrusion (1104) are adapted to be snapped into the two back plate top grooves (2402). The outer side of the pad (210) is provided with a rectangular assembly groove, the width of which is twice the width of the first limiting protrusion (1101) and the second limiting protrusion (1102).

4. A salt spray resistant and highly corrosion-resistant framed photovoltaic module according to claim 1, characterized in that, The plate joint seepage prevention mechanism (300) includes a horizontal insert plate (360) inserted into the horizontal slot (1105). The horizontal insert plate (360) has two drainage holes (3601) inside. A pressure baffle (310) is installed on the plate segment of the horizontal insert plate (360) that extends to the outside of the horizontal slot (1106). Two symmetrically distributed third sealing strips (380) are installed at the top and bottom of the pressure baffle (310), and the third sealing strips (380) are adapted to bear pressure on the gasket (210).

5. A salt spray resistant and highly corrosion-resistant framed photovoltaic module according to claim 4, characterized in that, The pressure-bearing baffle (310) has a cavity (3101) inside, and four evenly distributed fixing blocks (3102) are fixedly installed in the inner cavities at both ends of the pressure-bearing baffle (310). The outer end of the pressure baffle (310) is provided with a cover plate (370), the cover plate (370) is fixedly installed on the fixing block (3102), and the pressure baffle (310) has a drainage groove (3103) on the plate surface facing the aluminum frame (110), the drainage groove (3103) is connected to the cavity (3101), and the cavity (3101) is connected to the drain hole (3601).

6. A salt spray resistant and highly corrosion-resistant framed photovoltaic module according to claim 5, characterized in that, Four symmetrically distributed second elastic support plates (340) are fixedly installed on the pressure-bearing baffle (310). A horizontal pressure-increasing strip (350) is installed at the outer end of two adjacent second elastic support plates (340). There are two pressure-increasing strips (350). The outer end of the pressure-increasing strip (350) is provided with a suitable inclined structure that bears pressure on the pressure-increasing pad (230).

7. A salt spray resistant and highly corrosion-resistant framed photovoltaic module according to claim 5, characterized in that, The cavity (3101) is provided with a first elastic support plate (320). The two sides of the first elastic support plate (320) are inserted into the gap between two fixed blocks (3102) and the pressure baffle (310). The outer end of the first elastic support plate (320) is equipped with an internal plug (330). The other side of the internal plug (330) is adapted to bear pressure on the inner port of the drainage groove (3103).

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