Light and impact-resistant photovoltaic module

Abstract

The utility model discloses a light and shock-resistant photovoltaic module, which comprises a base body and a photovoltaic power generation module, a positioning groove is arranged on the top surface of the base body, a grid type support frame is fixedly arranged on the groove bottom surface of the positioning groove, and the outer frame of the grid type support frame is tightly fixed with the side surface of the positioning groove. The grid-type supporting frame and the base body are of an integrated molding structure, the height of the grid-type supporting frame is smaller than the depth of the positioning groove, an elastic sealing bonding material is bonded to the top face of the grid-type supporting frame, and the lower portion of the photovoltaic power generation module extends into the positioning groove of the base body and is bonded and fixed to the grid-type supporting frame through the elastic sealing bonding material. A plurality of sealed cavities arranged in a latticed mode are formed between the bottom face of the photovoltaic power generation module and the groove bottom face of the positioning groove, and each photovoltaic cell of the photovoltaic power generation module is arranged over the corresponding sealed cavity. The utility model has the characteristics of light weight and strong impact resistance to external solid hard objects.

Description

Technical Field

[0001] The utility model relates to the technical field, in particular to a lightweight and impact-resistant photovoltaic component. Background Art

[0002] Photovoltaic power generation devices or components are generally heavy, mainly because the transparent cover of general photovoltaic components is made of 2-3.2mm thick tempered glass. With the rapid development and popular application of green energy, in addition to installing photovoltaic power generation systems on the ground and water, people also want to install photovoltaic power generation devices on the roofs and walls of various buildings, on carports, pergolas, cars, yachts and even on the sunny side of tents. Installing photovoltaic power generation devices on the surface of a non-load-bearing structure will bring safety hazards of mechanical collapse, so it is generally necessary to strengthen and reinforce the structure, but the cost of reinforcement is very high. With the increasing demand for photovoltaic system installation, many photovoltaic component manufacturers have begun to launch lightweight photovoltaic power generation components, so that photovoltaic power generation systems can be safely installed on structures. However, a new problem will arise in the actual application of lightweight photovoltaic power generation components: the ability to resist hard impact is poorer than that of traditional photovoltaic components, and the internal photovoltaic cells can be easily damaged by ordinary hail and small hard particles. The main reason is that the tempered glass, which was originally superior in strength and rigidity, has been replaced by non-glass-based flexible materials with poor strength and rigidity. In order to alleviate this problem, some manufacturers have made the cover material of photovoltaic modules thicker and stronger, some have added strengthening plates to the back of photovoltaic modules to improve the overall rigidity, and some have given up the installation scheme of adding frames to lightweight modules and only provide the installation of lightweight photovoltaic modules by surface bonding on a solid base surface. However, no matter which of the above methods is used, the problem of lightweight modules resisting the impact of solid particles still exists. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a lightweight and impact-resistant photovoltaic component, which has the characteristics of being lightweight and having strong impact resistance against external solid hard objects.

[0004] The technical solution of the utility model is:

[0005] A lightweight and impact-resistant photovoltaic component comprises a substrate and a photovoltaic power generation module;

[0006] A positioning groove is arranged on the top surface of the base, a grid-type support frame is fixedly arranged on the bottom surface of the positioning groove, the outer frame of the grid-type support frame is tightly fixed to the side of the positioning groove, and the grid-type support frame and the base are an integral molding structure, and the height of the grid-type support frame is less than the groove depth of the positioning groove;

[0007] The photovoltaic power generation module comprises a plurality of photovoltaic cells arranged in a matrix, wires, a junction box, a transparent packaging material, a photovoltaic cover plate and a photovoltaic back plate, wherein the plurality of photovoltaic cells are electrically connected by wires to form a photovoltaic cell string, the photovoltaic cell string is encapsulated in a transparent packaging material, the photovoltaic cover plate is fixedly connected to the top surface of the transparent packaging material, the photovoltaic back plate is fixedly connected to the bottom surface of the transparent packaging material, the junction box is arranged on the photovoltaic cover plate, and the wiring terminals of the photovoltaic cell string are sequentially passed through the transparent packaging material, the photovoltaic cover plate and the junction box for connection;

[0008] An elastic sealing adhesive material is bonded to the top surface of the grid-type support frame, the lower part of the photovoltaic power generation module extends into the positioning groove of the substrate and is bonded and fixed to the grid-type support frame by the elastic sealing adhesive material, and the elastic sealing adhesive material completely fills the space between the outer wall of the photovoltaic power generation module and the inner wall of the positioning groove, so that a plurality of grid-shaped sealed cavities are formed between the bottom surface of the photovoltaic power generation module and the bottom surface of the positioning groove, and each photovoltaic cell of the photovoltaic power generation module is placed directly above a corresponding sealed cavity.

[0009] The substrate is selected from aluminum alloy substrate, magnesium aluminum alloy substrate, glass fiber reinforced composite substrate or carbon fiber reinforced composite substrate.

[0010] The base is a frame-type base, which is selected from an aluminum alloy base, a magnesium-aluminum alloy base, a glass fiber reinforced composite base or a carbon fiber reinforced composite base. The frame-type base includes an annular bracket, a support platform and a reinforcing beam. The support platform is fixedly connected to the top of the annular bracket, the reinforcing beam is fixedly connected to the bottom surface of the support platform and is located on the inner circle of the annular bracket, and the positioning groove is arranged on the top surface of the support platform.

[0011] The grid-type support frame is selected from an aluminum alloy support frame, a magnesium-aluminum alloy support frame, a glass fiber reinforced composite support frame or a carbon fiber reinforced composite support frame that is integrally molded with the base.

[0012] The top surface of the grid-type support frame is provided with grid-shaped cross-distributed bonding grooves, the bottom surface of the bonding groove is a downwardly concave arc-shaped curved surface structure, the lower part of the elastic sealing adhesive material is filled in the bonding groove, and the upper part of the elastic sealing adhesive material extends out of the bonding groove and is bonded and fixed to the bottom surface of the photovoltaic power generation module.

[0013] The photovoltaic cover plate is an ethylene-tetrafluoroethylene copolymer (ETFE) transparent plate, the transparent packaging material is an ethylene-vinyl acetate copolymer (EVA) transparent material, and the photovoltaic back plate is a polyvinyl fluoride composite plate TPT.

[0014] The thickness of the photovoltaic power generation module is 0.8-1.5 mm.

[0015] The photovoltaic cell is a crystalline silicon photovoltaic cell.

[0016] Advantages of the utility model:

[0017] (1) The utility model forms a grid-shaped sealed cavity inside the base and directly below the photovoltaic power generation module, and each sealed cavity is located directly below a corresponding photovoltaic cell, that is, an air bag in the sealed cavity is used to support the corresponding photovoltaic cell, and air is used to replace the existing solid shock-absorbing material, which is lighter and requires less material. When the photovoltaic cell is impacted by a foreign solid hard object, the air bag is used to support and protect it, so the deformation of the photovoltaic cell is smaller and the protection effect is better.

[0018] (2) The utility model adopts a substrate made of lightweight materials to support the photovoltaic power generation module. It does not rely on increasing the thickness of the photovoltaic power generation module cover or back plate to obtain impact protection. Instead, it achieves impact resistance through the damping mechanism of the air bag. While ensuring the lightweight characteristics, it greatly improves the strong impact resistance to external solid hard objects.

[0019] (3) The photovoltaic power generation module of the utility model is embedded in the matrix, and the matrix provides further protection for the photovoltaic power generation module, further improving the impact resistance of the photovoltaic power generation device.

[0020] (4) The utility model adopts a grid-type support frame to support the photovoltaic power generation module, which provides stable support for the photovoltaic power generation module while realizing the grid-like distribution of air bags, thereby ensuring the stability of the support of the photovoltaic power generation module. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a cross-sectional view of the photovoltaic module of Example 1 of the utility model.

[0022] Figure 2 It is a stereoscopic diagram of the photovoltaic assembly of Example 1 of the utility model.

[0023] Figure 3 It is a cross-sectional view of the photovoltaic power generation module of the utility model.

[0024] Figure 4 It is a partial structural schematic diagram of the integrated molding structure of the aluminum alloy substrate and the grid-type support frame in Example 1 of the utility model.

[0025] Figure 5 This is a schematic diagram of the installation of the photovoltaic module of Example 1 of the utility model.

[0026] Figure 6 It is a cross-sectional view of the photovoltaic module of Example 2 of the utility model.

[0027] Figure 7 It is a bottom view of the fiberglass reinforced plastic base of Example 2 of the utility model.

[0028] Figure 8 This is a schematic diagram of the installation of the photovoltaic module of Example 2 of the utility model.

[0029] Figure numerals: 1-aluminum alloy substrate, 2-photovoltaic power generation module, 21-photovoltaic cell, 22-wire, 23-junction box, 24-transparent packaging material, 25-photovoltaic cover plate, 26-photovoltaic back plate, 3-grid type support frame, 31-bonding groove, 4-elastic sealing adhesive material, 5-sealed cavity, 6-glass fiber reinforced plastic base, 61-support platform, 62-ring bracket, 63-reinforcement beam, 7-structural adhesive, 8-structure, 9-bracket, 10-pressing block, 11-bolt, 12-nut. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] Example 1

[0032] See Figure 1-Figure 4 , a lightweight and impact-resistant photovoltaic module, which is a plate-type structure, includes an aluminum alloy substrate 1 and a photovoltaic power generation module 2;

[0033] A positioning groove is arranged on the top surface of the aluminum alloy substrate 1, and a grid-type support frame 3 is fixedly arranged on the bottom surface of the positioning groove. The grid-type support frame 3 is an aluminum alloy support frame, and the outer frame of the grid-type support frame 3 is tightly fixed to the side of the positioning groove, and the grid-type support frame 3 and the aluminum alloy substrate 1 are an integral plastic structure, and the height of the grid-type support frame 3 is less than the groove depth of the positioning groove, and a grid-shaped cross-distributed bonding groove 31 is arranged on the top surface of the grid-type support frame 3, and the groove bottom surface of the bonding groove 31 is a downwardly concave arc-shaped curved surface structure, and the lower part of the elastic sealing adhesive material 4 is filled in the bonding groove 31, and the upper part of the elastic sealing adhesive material 4 extends out of the bonding groove 31 and is bonded and fixed to the bottom surface of the photovoltaic power generation module 2, and the bonding groove 31 is used to position the elastic sealing adhesive material 4, so that the elastic sealing adhesive material 4 provides sufficient elastic supporting force to the photovoltaic power generation module 2;

[0034] The photovoltaic power generation module 2 includes a plurality of photovoltaic cells 21 arranged in a matrix, a wire 22, a junction box 23, a transparent encapsulation material 24, a photovoltaic cover plate 25 and a photovoltaic back plate 26. The plurality of photovoltaic cells 21 are electrically connected through the wire 22 to form a photovoltaic cell string. The photovoltaic cell string is encapsulated in the transparent encapsulation material 24. The photovoltaic cover plate 25 is fixedly connected to the top surface of the transparent encapsulation material 24. The photovoltaic back plate 26 is fixedly connected to the bottom surface of the transparent encapsulation material 24. The junction box 23 is arranged on the photovoltaic cover plate 25. The wiring terminals of the photovoltaic cell string are sequentially passed through the transparent encapsulation material 24, the photovoltaic cover plate 25 and connected to the junction box 23.

[0035] The lower part of the photovoltaic power generation module 2 extends into the positioning groove of the base 1 and is bonded and fixed to the grid-type support frame 3 by an elastic sealing adhesive material 4, and the elastic sealing adhesive material 4 is completely filled between the outer wall of the photovoltaic power generation module 2 and the inner wall of the positioning groove, so that a plurality of grid-arranged sealed cavities 5 are formed between the bottom surface of the photovoltaic power generation module 2 and the bottom surface of the positioning groove, and the sealed cavities 5 are filled with air to form an air bag structure, and each photovoltaic cell 21 of the photovoltaic power generation module 2 is placed directly above a corresponding sealed cavity 5.

[0036] See Figure 5 When the photovoltaic module of the plate structure is installed, the top surface of the photovoltaic module, that is, the light-receiving surface, faces upward, and the bottom surface of the photovoltaic module is bonded to the installation surface of the structure 8 through the structural adhesive 7.

[0037] Example 2

[0038] See Figure 6 and Figure 7 , a lightweight and impact-resistant photovoltaic module, which is a frame-type structure, including a glass fiber reinforced plastic base 6 and a photovoltaic power generation module 2;

[0039] The fiberglass base 6 includes a support platform 61, an annular bracket 62 and a reinforcing beam 63. The support platform 61 is fixedly connected to the top of the annular bracket 62. The reinforcing beam 63 is fixedly connected to the bottom surface of the support platform 61 and is located at the inner circle of the annular bracket 62. A positioning groove is provided on the top surface of the support platform 61. A grid-type support frame 3 is fixedly provided on the bottom surface of the positioning groove. The lower part of the photovoltaic power generation module 2 extends into the positioning groove of the substrate 1 and is bonded and fixed to the grid-type support frame 3 by an elastic sealing adhesive material 4. The structure of the photovoltaic power generation module 2 is the same as that of Example 1.

[0040] See Figure 8 When installing a photovoltaic module of a frame type structure, the photovoltaic module is placed on a bracket 9, a pressing block 10 is pressed on the edge of a fiberglass base 6 of the photovoltaic module, and the pressing block 10 is fastened to the bracket 9 by bolts 11 and nuts 12.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lightweight and impact-resistant photovoltaic module, characterized in that: It includes a substrate and a photovoltaic power generation module; A positioning groove is arranged on the top surface of the base, a grid-type support frame is fixedly arranged on the bottom surface of the positioning groove, the outer frame of the grid-type support frame is tightly fixed to the side of the positioning groove, and the grid-type support frame and the base are an integral molding structure, and the height of the grid-type support frame is less than the groove depth of the positioning groove; The photovoltaic power generation module comprises a plurality of photovoltaic cells arranged in a matrix, wires, a junction box, a transparent packaging material, a photovoltaic cover plate and a photovoltaic back plate, wherein the plurality of photovoltaic cells are electrically connected by wires to form a photovoltaic cell string, the photovoltaic cell string is encapsulated in a transparent packaging material, the photovoltaic cover plate is fixedly connected to the top surface of the transparent packaging material, the photovoltaic back plate is fixedly connected to the bottom surface of the transparent packaging material, the junction box is arranged on the photovoltaic cover plate, and the wiring terminals of the photovoltaic cell string are sequentially passed through the transparent packaging material, the photovoltaic cover plate and the junction box for connection; An elastic sealing adhesive material is bonded to the top surface of the grid-type support frame, the lower part of the photovoltaic power generation module extends into the positioning groove of the substrate and is bonded and fixed to the grid-type support frame by the elastic sealing adhesive material, and the elastic sealing adhesive material completely fills the space between the outer wall of the photovoltaic power generation module and the inner wall of the positioning groove, so that a plurality of grid-shaped sealed cavities are formed between the bottom surface of the photovoltaic power generation module and the bottom surface of the positioning groove, and each photovoltaic cell of the photovoltaic power generation module is placed directly above a corresponding sealed cavity.

2. A lightweight and impact-resistant photovoltaic module according to claim 1, characterized in that: The substrate is selected from aluminum alloy substrate, magnesium aluminum alloy substrate, glass fiber reinforced composite substrate or carbon fiber reinforced composite substrate.

3. A lightweight and impact-resistant photovoltaic module according to claim 1, characterized in that: The base is a frame-type base, which is selected from an aluminum alloy base, a magnesium-aluminum alloy base, a glass fiber reinforced composite base or a carbon fiber reinforced composite base. The frame-type base includes a support platform, an annular bracket and a reinforcing beam. The support platform is fixedly connected to the top of the annular bracket, the reinforcing beam is fixedly connected to the bottom surface of the support platform and is located on the inner circle of the annular bracket, and the positioning groove is arranged on the top surface of the support platform.

4. A lightweight and impact-resistant photovoltaic module according to claim 2 or 3, characterized in that: The grid-type support frame is selected from an aluminum alloy support frame, a magnesium-aluminum alloy support frame, a glass fiber reinforced composite support frame or a carbon fiber reinforced composite support frame that is integrally molded with the base.

5. The lightweight and impact-resistant photovoltaic module according to claim 1, characterized in that: The top surface of the grid-type support frame is provided with grid-shaped cross-distributed bonding grooves, the bottom surface of the bonding groove is a downwardly concave arc-shaped curved surface structure, the lower part of the elastic sealing adhesive material is filled in the bonding groove, and the upper part of the elastic sealing adhesive material extends out of the bonding groove and is bonded and fixed to the bottom surface of the photovoltaic power generation module.

6. A lightweight and impact-resistant photovoltaic module according to claim 1, characterized in that: The photovoltaic cover plate is an ethylene-tetrafluoroethylene copolymer transparent plate, the transparent packaging material is an ethylene-vinyl acetate copolymer transparent material, and the photovoltaic back plate is a polyvinyl fluoride composite plate TPT.

7. A lightweight and impact-resistant photovoltaic module according to claim 1, characterized in that: The thickness of the photovoltaic power generation module is 0.8-1.5 mm.

8. A lightweight and impact-resistant photovoltaic module according to claim 1, characterized in that: The photovoltaic cell is a crystalline silicon photovoltaic cell.

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