A corrosion-resistant photovoltaic encapsulation component sealing structure

Abstract

This utility model discloses a sealing structure for a corrosion-resistant photovoltaic (PV) encapsulation component, including a PV support backplate. A sliding frame is slidably connected to the top of the PV support backplate. A fixing block and a connecting plate are fixedly connected to the same side of the PV support backplate and the sliding frame, respectively. An elastic element is provided on the top of the fixing block. A locking hole is formed inside the connecting plate, and one end of the elastic element extends into the locking hole. A PV laminate structure is provided between the interior of the PV support backplate and the sliding frame. This utility model, through the cooperation of the elastic element and the locking hole, enables rapid installation and removal between the PV support backplate and the sliding frame. This design not only facilitates the maintenance of the PV encapsulation component by staff but also saves labor costs and improves efficiency.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic packaging component technology, specifically to a corrosion-resistant photovoltaic packaging component sealing structure. Background Technology

[0002] Photovoltaic encapsulation components refer to the essential materials and structures in a photovoltaic power generation system that protect and support the photovoltaic modules. The main function of photovoltaic encapsulation is to ensure the stability and high efficiency of solar cells under various environments, while extending their lifespan. Typically, these components consist of multiple layers of materials, including a transparent protective layer, an encapsulation film, and a rigid substrate, designed to resist external physical impacts, moisture, ultraviolet radiation, and chemical corrosion.

[0003] Existing photovoltaic encapsulation components are typically designed as a single frame, which makes disassembly of the entire component difficult and inflexible during maintenance. They are also inconvenient to disassemble and maintain, and require disassembly of the entire system in case of failure, increasing the complexity and time cost of maintenance. To improve the performance and maintenance efficiency of photovoltaic encapsulation components, we propose a corrosion-resistant photovoltaic encapsulation component sealing structure. Utility Model Content

[0004] The purpose of this invention is to provide a corrosion-resistant photovoltaic encapsulation component sealing structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a sealing structure for a corrosion-resistant photovoltaic encapsulation component, comprising a photovoltaic support backplate, a sliding frame slidably connected to the top of the photovoltaic support backplate, a fixing block and a connecting plate respectively fixedly connected to the same side of the photovoltaic support backplate and the sliding frame, an elastic element provided on the top of the fixing block, a locking hole provided inside the connecting plate, one end of the elastic element extending into the interior of the locking hole, and a photovoltaic laminate structure provided between the interior of the photovoltaic support backplate and the sliding frame.

[0006] As a further preferred embodiment of this technical solution, the photovoltaic laminate structure includes a back layer, a first intermediate encapsulation layer, a photovoltaic cell layer, a second intermediate encapsulation layer, and a front surface layer. An embedding groove is formed on the top of the back layer. The first intermediate encapsulation layer and the photovoltaic cell layer are disposed inside the back layer, and the second intermediate encapsulation layer and the front surface layer are disposed inside the embedding groove.

[0007] As a further preferred embodiment of this technical solution, the elastic element includes a slot, a protrusion, and a return spring. The slot is formed on the top of the fixing block, and the protrusion is slidably connected between the inner walls of the slot. The return spring is fixedly connected between the protrusion and the inner wall of the slot, and one end of the protrusion extends into the interior of the locking hole.

[0008] As a further preferred embodiment of this technical solution, side grooves are provided on both sides of the photovoltaic support backplate, and embedded strips are fixedly connected to both sides of the inner wall of the sliding frame, with the outer side of the embedded strips slidably connected to the inner wall of the side grooves.

[0009] As a further preferred embodiment of this technical solution, four positioning rods are fixedly connected inside the photovoltaic support back plate, and four positioning holes are opened at the bottom of the back layer, with one end of each positioning rod extending into the interior of the positioning hole.

[0010] As a further preferred embodiment of this technical solution, the top of the sliding frame is provided with a pull groove.

[0011] This utility model provides a corrosion-resistant photovoltaic encapsulation component sealing structure, which has the following beneficial effects:

[0012] (1) This utility model realizes the quick installation and removal between the photovoltaic support back plate and the sliding frame through the cooperation of the elastic element and the locking hole. This design not only facilitates the maintenance of photovoltaic encapsulation components by staff, but also saves labor costs and improves the efficiency of use.

[0013] (2) This utility model effectively improves the sealing performance of photovoltaic encapsulation components by optimizing the design of the photovoltaic lamination structure. The selection of materials for each layer also helps to improve its corrosion resistance: the back layer is made of PVDF material, the first intermediate encapsulation layer and the second intermediate encapsulation layer are made of EVA material, the photovoltaic cell layer uses monocrystalline silicon or polycrystalline silicon solar cells and is equipped with an anti-reflective coating, and the front surface layer uses reinforced glass material, which makes it exhibit stronger corrosion resistance during use. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a schematic diagram of the sliding frame separation structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the photovoltaic laminated layer structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the half-section structure of the elastic element of this utility model;

[0018] In the diagram: 1. Photovoltaic support backplate; 2. Sliding frame; 3. Side groove; 4. Embedded strip; 5. Fixing block; 6. Connecting plate; 7. Pulling groove; 8. Elastic element; 9. Photovoltaic laminate structure; 10. Positioning rod; 11. Positioning hole; 12. Back layer; 13. Embedded groove; 14. First intermediate encapsulation layer; 15. Photovoltaic cell layer; 16. Second intermediate encapsulation layer; 17. Front surface layer; 18. Groove; 19. Protrusion; 20. Return spring; 21. Locking hole. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0020] This utility model provides a technical solution: such as Figures 1-4 As shown in this embodiment, a corrosion-resistant photovoltaic encapsulation component sealing structure includes a photovoltaic support backplate 1. A sliding frame 2 is slidably connected to the top of the photovoltaic support backplate 1. A fixing block 5 and a connecting plate 6 are fixedly connected to the same side of the photovoltaic support backplate 1 and the sliding frame 2, respectively. An elastic element 8 is provided on the top of the fixing block 5. A locking hole 21 is opened inside the connecting plate 6. One end of the elastic element 8 extends into the interior of the locking hole 21. A photovoltaic laminate structure 9 is provided between the interior of the photovoltaic support backplate 1 and the sliding frame 2. The photovoltaic laminate structure 9 includes a back layer 12, a first intermediate encapsulation layer 14, a photovoltaic cell layer 15, a second intermediate encapsulation layer 16, and a front layer 12. The top of the surface layer 17 and the back layer 12 are provided with an embedding groove 13. The first intermediate encapsulation layer 14 and the photovoltaic cell layer 15 are disposed inside the back layer 12. The second intermediate encapsulation layer 16 and the front surface layer 17 are disposed inside the embedding groove 13. The photovoltaic support back plate 1 has side grooves 3 on both sides. The inner walls of the sliding frame 2 are fixedly connected with embedding strips 4 on both sides. The outer side of the embedding strips 4 is slidably connected to the inner wall of the side grooves 3. The photovoltaic support back plate 1 is fixedly connected with four positioning rods 10 inside. The bottom of the back layer 12 is provided with four positioning holes 11. One end of the positioning rod 10 extends into the interior of the positioning hole 11. The top of the sliding frame 2 is provided with a pulling groove 7.

[0021] When using the photovoltaic encapsulation component, the photovoltaic component is first connected to the support or adjustment structure by the connecting shaft on one side of the photovoltaic support backplate 1, so that the component is connected to the external power collection equipment. Then, under the action of the four positioning rods 10 and the four positioning holes 11, the photovoltaic laminate structure 9 is installed inside the photovoltaic support backplate 1. Finally, the embedding strip 4 on the inner side of the sliding frame 2 is inserted along the side grooves 3 on both sides of the photovoltaic support backplate 1, so that one end of the elastic element 8 extends into the interior of the locking hole 21, so that the sliding frame 2 is locked on the top of the photovoltaic support backplate 1.

[0022] In the photovoltaic laminate structure 9, the back layer 12 and the first intermediate encapsulation layer 14 are bonded together using a special adhesive (such as polyurethane adhesive or EVA adhesive) (function: to provide support and protection, prevent the penetration of moisture and dirt, and increase electrical insulation performance); the first intermediate encapsulation layer 14 and the photovoltaic cell layer 15 are bonded together using EVA adhesive through hot pressing or lamination (function: to bond the photovoltaic cell layer, prevent the intrusion of moisture and dust, and ensure a tight connection between the photovoltaic cell and the layers before and after); the photovoltaic cell layer 15 and the second intermediate encapsulation layer 16 are also bonded together using an EVA layer through hot pressing lamination (function: to protect the cell layer, ensure that heat and moisture do not affect the performance of the cell, and provide support for subsequent modules); the second intermediate encapsulation layer 16 and the front surface layer 17 are also bonded together using EVA or other transparent adhesives (function: to provide protection, ensure that light can pass through the front surface layer to the maximum extent, and seal the internal structure to prevent the influence of the external environment).

[0023] like Figures 1-4 As shown, the elastic element 8 includes a slot 18, a protrusion 19 and a return spring 20. The slot 18 is opened on the top of the fixed block 5. The protrusion 19 is slidably connected between the inner walls of the slot 18. The return spring 20 is fixedly connected between the protrusion 19 and the inner wall of the slot 18. One end of the protrusion 19 extends into the interior of the locking hole 21.

[0024] When performing maintenance work on photovoltaic encapsulation components, first press the protrusion 19 to move it into the groove 18, then pull the pull groove 7 to move the sliding frame 2 on top of the photovoltaic support back plate 1, thereby separating the photovoltaic support back plate 1 from the sliding frame 2, which makes it easier for staff to perform maintenance on the inside of the photovoltaic encapsulation components.

[0025] This utility model provides a sealing structure for a corrosion-resistant photovoltaic encapsulation component. The specific working principle is as follows: When using the photovoltaic encapsulation component, the locking design of the elastic element 8 enables the sliding frame 2 to be quickly locked and unlocked. When maintaining the photovoltaic encapsulation component, firstly, by pressing the protrusion 19, the protrusion 19 moves into the groove 18. Then, the pulling groove 7 is pulled, causing the sliding frame 2 to move on top of the photovoltaic support backplate 1, thereby separating the photovoltaic support backplate 1 from the sliding frame 2.

[0026] In the operation of photovoltaic encapsulation components, when sunlight shines on the front surface layer 17 of the photovoltaic module, photons in the light penetrate the glass and are absorbed by the photovoltaic cell layer 15. The photovoltaic cell layer 15 (specifically a monocrystalline silicon or polycrystalline silicon solar cell with an anti-reflective coating on its surface) generates a photoelectric effect (specifically, photons excite electrons, causing them to be released from atoms). Each released electron will cause a hole to be generated in the silicon material and form an electric field inside the photovoltaic cell layer 15. This electric field will drive the released electrons to move, thereby forming a current. The current flows through the external circuit, providing electrical energy to the load device.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An anti-corrosion photovoltaic encapsulant member seal structure comprising a photovoltaic support backsheet (1), characterized by: A sliding frame (2) is slidably connected to the top of the photovoltaic support backplate (1). A fixing block (5) and a connecting plate (6) are fixedly connected to the same side of the photovoltaic support backplate (1) and the sliding frame (2), respectively. An elastic element (8) is provided on the top of the fixing block (5). A locking hole (21) is provided inside the connecting plate (6). One end of the elastic element (8) extends into the interior of the locking hole (21). A photovoltaic laminate structure (9) is provided between the interior of the photovoltaic support backplate (1) and the sliding frame (2).

2. An encapsulated structure for a corrosion resistant photovoltaic package according to claim 1, wherein: The photovoltaic laminate structure (9) includes a back layer (12), a first intermediate encapsulation layer (14), a photovoltaic cell layer (15), a second intermediate encapsulation layer (16), and a front surface layer (17). An embedding groove (13) is provided on the top of the back layer (12). The first intermediate encapsulation layer (14) and the photovoltaic cell layer (15) are disposed inside the back layer (12), and the second intermediate encapsulation layer (16) and the front surface layer (17) are disposed inside the embedding groove (13).

3. An encapsulated structure for a corrosion resistant photovoltaic package according to claim 1, wherein: The elastic element (8) includes a slot (18), a protrusion (19) and a return spring (20). The slot (18) is opened on the top of the fixing block (5). The protrusion (19) is slidably connected between the inner walls of the slot (18). The return spring (20) is fixedly connected between the protrusion (19) and the inner wall of the slot (18). One end of the protrusion (19) extends into the interior of the locking hole (21).

4. An encapsulated structure for a corrosion resistant photovoltaic package according to claim 1, wherein: The photovoltaic support backplate (1) has side grooves (3) on both sides, and the inner walls of the sliding frame (2) are fixedly connected with embedded strips (4). The outer side of the embedded strips (4) is slidably connected to the inner wall of the side grooves (3).

5. An encapsulated structure for a corrosion resistant photovoltaic package according to claim 2, wherein: The photovoltaic support backplate (1) is internally fixedly connected with four positioning rods (10), and the bottom of the back layer (12) is provided with four positioning holes (11), with one end of the positioning rod (10) extending into the interior of the positioning hole (11).

6. An encapsulated structure for a corrosion resistant photovoltaic package according to claim 1, wherein: The top of the sliding frame (2) is provided with a pull groove (7).

Images