Solar photovoltaic panel

Abstract

The utility model provides a solar photovoltaic panel. The solar photovoltaic panel comprises a battery string layer; the panel is arranged on one side of the battery string layer; the back plate is arranged on the other side of the battery string layer; a first enhancement layer disposed between the cell string layer and the panel; the second enhancement layer is arranged between the battery string layer and the back plate; and the nano coating is arranged on one side, far away from the battery string layer, of the panel. According to the solar photovoltaic panel, the surface of a light high-strength assembly formed through lamination is coated with a PET super-hydrophilic nanometer single-component thermocuring coating, the solar photovoltaic panel has super-strong weather resistance and wear resistance, meanwhile, static electricity generated on the surface of a front panel base material can be restrained, dust is not prone to being attached to the surface of the coating, and the self-cleaning and dust deposition resisting effects are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of solar photovoltaic panels, and in particular to a solar photovoltaic panel. Background Art

[0002] High-efficiency solar cells make solar panels lighter, more compact and more efficient. The continuous optimization and upgrading of solar technology and packaging materials have promoted the development of lightweight panels. The use of lightweight panels in color steel roof tiles, distributed photovoltaic roofs, balconies, courtyards and other scenes has been increasingly promoted. However, with long-term use, problems such as dust accumulation, mold spots, bird droppings, etc. on the panels lead to problems such as decreased output power and hot spots, resulting in reduced component life. These problems have become increasingly prominent. Utility Model Content

[0003] The purpose of the utility model is to provide a solar photovoltaic panel with a self-cleaning function, which has the advantage of high practicability and solves the problem of low practicability of existing solar photovoltaic panels.

[0004] In view of this, the first aspect of the utility model proposes a solar photovoltaic panel comprising: a cell string layer; a panel, arranged on one side of the cell string layer; a backplane, arranged on the other side of the cell string layer; a first reinforcement layer, arranged between the cell string layer and the panel; a second reinforcement layer, arranged between the cell string layer and the backplane; and a nano-coating, arranged on the side of the panel away from the cell string layer.

[0005] The solar photovoltaic panel provided by the utility model includes: a battery string layer; a panel, arranged on one side of the battery string layer; a backplane, arranged on the other side of the battery string layer; a first reinforcement layer, arranged between the battery string layer and the panel; a second reinforcement layer, arranged between the battery string layer and the backplane; and a nano coating, arranged on the side of the panel away from the battery string layer. The solar photovoltaic panel in the utility model is provided with a nano coating on the panel, and the nano coating is specifically a PET (PolyethyleneTerephthalate, polyethylene terephthalate glycol) super hydrophilic nano single-component thermal curing coating, which has super weather resistance and wear resistance, and can inhibit the generation of static electricity on the surface of the panel substrate, so that dust is not easy to adhere to the coating surface, and achieve self-cleaning and anti-dust accumulation effects. At the same time, reinforcement layers are also arranged between the battery string layer, the panel and the backplane, wherein the first reinforcement layer and the second reinforcement layer are respectively arranged between the battery string layer and the panel and the backplane. By arranging the first reinforcement layer and the second reinforcement layer, the first reinforcement layer and the second reinforcement layer can greatly improve the strength of the solar photovoltaic panel, and can provide better protection for the battery string layer in the solar photovoltaic panel. At the same time, since the thickness of the solar photovoltaic panel provided in the utility model is relatively small, it is necessary to provide a reinforcement layer on both sides of the battery string layer.

[0006] Specifically, the active ingredients of nano coatings are highly active silicon-oxygen oligomers that can form a film on their own—alkali metal silicates. 2 O·mSiO 2 ·nH 2 O, inorganic nano-SiO 2 , TiO 2 , SnO 2 The particles are composed of H 2 O、CH 3 CH 2 OH and CH 3 COOH composition, the coating wet film thickness is 300nm ~ 350nm, the thermal curing temperature is 80 ℃ -100 ℃, the time is 8min-10min, the dry film thickness after curing is 80nm ~ 100nm, and the coating hardness after heating and curing can reach 5HB (Brown hardness unit).

[0007] The solar photovoltaic panel provided by the utility model may also have the following additional technical features:

[0008] In some possible designs, the front panel is a light-transmitting panel and the back panel is a light-transmitting panel.

[0009] In this design, both the front panel and the back panel are light-transmitting panels, so that the solar photovoltaic panel provided by the utility model can be charged on both sides, thereby improving the charging efficiency of the solar photovoltaic panel.

[0010] In some possible designs, the panel includes one of the following or a combination thereof: PET (Polyethylene Terephthalate) board, CPC (composed of Coating / PET / Coating, where Coating means coating) board and HPC (composed of High weather resistant coating / PET / Coating, where High weather resistant coating means high weather resistant coating and Coating means coating) board; and / or the back panel includes one of the following or a combination thereof: PET board, CPC board and HPC board; the thickness of the panel and the back panel is greater than or equal to 0.3 mm (millimeter) and less than or equal to 0.6 mm.

[0011] In this design, the panel and backboard can be made of one of the following or a combination thereof: PET board, CPC board and HPC board. Specifically, the panel and backboard can be made of the same material or different materials. When the panel and backboard are made of the same material, the processing technology is simpler and the production cycle of the solar photovoltaic panel can be shortened. At the same time, the thickness of the panel and backboard needs to be greater than or equal to 0.3mm to ensure that the panel and backboard have a certain strength. At the same time, the thickness of the panel and backboard needs to be less than or equal to 0.6mm to ensure that the thickness of the solar photovoltaic panel is low.

[0012] In some possible designs, the thickness of the nano coating is greater than or equal to 80 nm (nanometers) and less than or equal to 100 nm.

[0013] In this design, the thickness of the nano coating after drying needs to be greater than or equal to 80nm, ensuring that the nano coating can still suppress the static electricity generated on the surface of the front panel substrate under a certain wear and tear, making it difficult for dust to adhere to the coating surface, achieving self-cleaning and anti-dust accumulation effects. At the same time, the thickness of the nano coating after drying is limited to less than or equal to 100nm, thereby ensuring the low thickness of the solar photovoltaic panel.

[0014] In some possible designs, the first reinforcement layer includes: a glass fiber composite resin layer; and / or the second reinforcement layer includes: a glass fiber composite resin layer; the thickness of the first reinforcement layer is greater than or equal to 0.3 mm and less than or equal to 0.45 mm; and / or the thickness of the second reinforcement layer is greater than or equal to 0.3 mm and less than or equal to 0.45 mm.

[0015] In this design, the first reinforcement layer and the second reinforcement layer are glass fiber composite resin layers. The glass fiber resin material has high strength, good corrosion resistance, and excellent electrical properties. It can ensure the strength of the solar photovoltaic panel while preventing the battery inside the solar photovoltaic panel from being corroded, and can place the battery power between the first reinforcement layer and the second reinforcement layer to prevent the battery from leaking after long-term use. It is further specified that the thickness of the first reinforcement layer and the second reinforcement layer must be greater than or equal to 0.3mm, thereby ensuring that the first reinforcement layer and the second reinforcement layer can ensure the strength of the solar photovoltaic panel while preventing the battery inside the solar photovoltaic panel from being corroded, and can place the battery power between the first reinforcement layer and the second reinforcement layer to prevent the battery from leaking after long-term use. At the same time, the thickness of the first reinforcement layer and the second reinforcement layer must be less than or equal to 0.45mm, thereby ensuring that the thickness of the solar photovoltaic panel is low.

[0016] In some possible designs, the solar photovoltaic panel also includes a first encapsulation film, which is arranged between the cell string layer and the first reinforcement layer; and / or a second encapsulation film, which is arranged between the cell string layer and the second reinforcement layer; and / or a third encapsulation film, which is arranged between the first reinforcement layer and the panel; and / or a fourth encapsulation film, which is arranged between the second reinforcement layer and the back panel.

[0017] In this design, the battery string layer, the first reinforcement layer, the second reinforcement layer, the panel and the backplane are all connected with packaging film.

[0018] In some possible designs, the first packaging film includes: POE (Polyolefin Elastomer) film; and / or the second packaging film includes: POE film; and / or the third packaging film includes one of the following or a combination thereof: POE film, EVA (Ethylene-vinyl Acetate copolymer) film and EPE film (co-extruded film composed of EVA / POE / EVA); and / or the fourth packaging film includes one of the following or a combination thereof: POE film, EVA film and EPE film; the thickness of the first packaging film is greater than or equal to 0.4 mm and less than or equal to 0.7 mm; and / or the thickness of the second packaging film is greater than or equal to 0.4 mm and less than or equal to 0.7 mm; and / or the thickness of the third packaging film is greater than or equal to 0.3 mm and less than or equal to 0.7 mm; and / or the thickness of the fourth packaging film is greater than or equal to 0.3 mm and less than or equal to 0.7 mm.

[0019] In this design, the first and second packaging films are made of POE film. Since the first and second packaging films are used to connect the battery string layers, POE films with better weather resistance and not corroded by chemical substances are required. The third and fourth packaging films are used to connect the reinforcement layer and the panel and backplane, so there are more materials to choose from, such as EVA film or EPE film with better light transmittance and adhesion. Furthermore, the first and second packaging films are thicker than the third and fourth packaging films because they need to protect the battery. At the same time, in order to ensure that the thickness of the solar photovoltaic panel is small, the thickness of the packaging film must be less than or equal to 0.7mm.

[0020] In some possible designs, the cell string layer includes a plurality of cells; the cells include one or a combination of the following: XBC cells (Back contact solar cells) and MWT (Metal Wrap Through) cells.

[0021] In this design, the multiple cells that form the battery string layer are preferably XBC cells or MWT cells. There are no metal grid lines in the shingles of these two types of cells, and both positive and negative metal motors can be led out from the backplane, which can improve the lighting effect on the front of the solar photovoltaic panel.

[0022] In some possible designs, the cell string layer includes multiple cells; the cells include one of the following or a combination thereof: PERC (Passivated Emitter and Rear cell) cells, TOPCON (Tunnel Oxide Passivated Contact) cells and HJT (Heterojunction with Intrinsic Thin-film) cells.

[0023] In this design, the multiple cells that make up the battery string layer can be selected from PERC cells, TOPCON cells and HJT cells. These three types of cells have grid cell sheets on both the front and back sides, which have higher efficiency and stability.

[0024] In some possible designs, the thickness of the solar photovoltaic panel is less than 3 mm, and the weight of the solar photovoltaic panel per square meter is less than 3.8 kg (kilograms).

[0025] In this design, the thickness of the solar photovoltaic panel needs to be less than 3mm, that is, the total thickness of the battery string layer, the first reinforcement layer, the second reinforcement layer, the panel, the backplane and the packaging film needs to be less than 3mm, and the minimum thickness of the first reinforcement layer, the second reinforcement layer, the panel, the backplane and the packaging film must be met. Through the above design, the weight of the solar photovoltaic panel per square meter is less than 3.8kg, realizing the lightweight of the solar photovoltaic panel.

[0026] In some possible designs, the solar photovoltaic panel includes: a battery area and a non-battery area; the battery string layer is arranged in the battery area; and a plurality of positioning and mounting holes and / or a plurality of dust and water drainage holes are provided in the non-battery area.

[0027] In this design, the solar photovoltaic panel includes a battery area and a non-battery area, wherein the battery string layer is arranged in the battery area, and a plurality of positioning and mounting holes and ash and drainage holes are arranged in the non-battery area, so that the solar photovoltaic panel can be installed in a designated position without setting a frame, and at the same time, automatic drainage and ash discharge can be realized to ensure the cleanliness of the solar photovoltaic panel.

[0028] Specifically, the positioning and mounting holes are eyelet positioning and mounting holes.

[0029] The solar photovoltaic panel in the utility model is a light and high-strength double-sided photovoltaic component with a symmetrical packaging structure, a stable structure, a component thickness of less than 3mm, and a weight of less than 3.8kg / m 2 (kg per square meter), eyelets are designed on both sides of the module for easy installation and removal. Solar photovoltaic panels are made of lightweight and high-strength components after lamination, and the surface is coated with a layer of PET super-hydrophilic nano-single-component thermal curing coating. It has super weather resistance and wear resistance. At the same time, it can inhibit the static electricity generated on the surface of the front panel substrate, making it difficult for dust to adhere to the coating surface, achieving self-cleaning and anti-dust accumulation effects. The lightweight double-sided self-cleaning photovoltaic module with a symmetrical packaging structure is installed at an angle of 15° to 30° when installed on the roof or color steel roof. The water contact angle after coating is less than 10°. The dust will be washed away by rainwater and discharged through the dust drainage holes, maintaining the light transmittance and cleanliness of the surface of the photovoltaic module. The actual power generation gain is increased by an average of 1.5%-2.0% compared with conventional modules.

[0030] Additional aspects and advantages of the present invention will become apparent in the following description or will be understood through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0032] Figure 1 is an exploded schematic diagram of a solar photovoltaic panel according to an embodiment of the utility model;

[0033] Figure 2 is a top view of a solar photovoltaic panel according to an embodiment of the utility model;

[0034] Figure 3 It is a battery string layer connection diagram according to an embodiment of the utility model.

[0035] in, Figures 1 to 3 The corresponding relationship between the reference numerals and the component names is as follows:

[0036] 1 battery string layer, 2 panel, 3 back panel, 40 first reinforcement layer, 42 second reinforcement layer, 50 first packaging film, 52 second packaging film, 54 third packaging film, 56 fourth packaging film, 6 nano coating, 7 battery area, 8 non-battery area, 82 positioning and mounting holes, 84 dust and drainage holes. DETAILED DESCRIPTION

[0037] In order to more clearly understand the above-mentioned purposes, features and advantages of the present invention, the present invention is optionally described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0038] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0039] Refer to the following Figures 1 to 3 The solar photovoltaic panels according to some embodiments of the present invention are described.

[0040] like Figures 1 to 3 As shown, according to an embodiment of the utility model, the utility model proposes a solar photovoltaic panel including: a cell string layer 1; a panel 2, arranged on one side of the cell string layer 1; a backplane 3, arranged on the other side of the cell string layer 1; a first reinforcement layer 40, arranged between the cell string layer 1 and the panel 2; a second reinforcement layer 42, arranged between the cell string layer 1 and the backplane 3; a nano coating 6, arranged on the side of the panel 2 away from the cell string layer 1.

[0041] The solar photovoltaic panel provided by the utility model comprises: a battery string layer 1; a panel 2, arranged on one side of the battery string layer 1; a back plate 3, arranged on the other side of the battery string layer 1; a first reinforcement layer 40, arranged between the battery string layer 1 and the panel 2; a second reinforcement layer 42, arranged between the battery string layer 1 and the back plate 3; and a nano coating 6, arranged on the side of the panel 2 away from the battery string layer 1. The solar photovoltaic panel in the utility model is provided with a nano coating 6 on the panel 2, and the nano coating 6 is specifically a PET super-hydrophilic nano single-component thermal curing coating, which has super weather resistance and wear resistance, and can suppress the generation of static electricity on the surface of the panel 2 substrate, so that dust is not easy to adhere to the coating surface, and achieve self-cleaning and anti-dust accumulation effects. At the same time, reinforcing layers are arranged between the battery string layer 1, the panel 2 and the back plate 3, wherein the first reinforcing layer 40 and the second reinforcing layer 42 are arranged between the battery string layer 1 and the panel 2 and the back plate 3 respectively. By arranging the first reinforcing layer 40 and the second reinforcing layer 42, the first reinforcing layer 40 and the second reinforcing layer 42 can greatly improve the strength of the solar photovoltaic panel and provide better protection for the battery string layer 1 in the solar photovoltaic panel. At the same time, since the thickness of the solar photovoltaic panel provided in the utility model is relatively small, it is necessary to arrange reinforcing layers on both sides of the battery string layer 1.

[0042] Specifically, the active ingredients of nano coatings are highly active silicon-oxygen oligomers that can form a film on their own—alkali metal silicates. 2 O·mSiO 2·nH 2 O, inorganic nano-SiO 2 , TiO 2 , SnO 2 The particles are composed of H 2 O、CH 3 CH 2 OH and CH 3 COOH composition, the coating wet film thickness is 300nm ~ 350nm, the thermal curing temperature is 80 ℃ -100 ℃, the time is 8min-10min, the dry film thickness after curing is 80nm ~ 100nm, and the coating hardness after heating and curing can reach 5HB (Brown hardness unit).

[0043] The solar photovoltaic panel provided by the utility model may also have the following additional technical features:

[0044] In some possible embodiments, the front panel 2 is a light-transmitting panel, and the back panel 3 is a light-transmitting panel.

[0045] In this embodiment, if Figure 1 As shown, the panel 2 and the back panel 3 are both light-transmitting panels, so that the solar photovoltaic panel provided by the utility model can be charged on both sides, thereby improving the charging efficiency of the solar photovoltaic panel.

[0046] In some possible embodiments, the panel 2 includes one of the following or a combination thereof: PET (Polyethylene Terephthalate) board, CPC (Copolymer Polycarbonate) board and HPC (High-Performance Clear) board; and / or the back panel 3 includes one of the following or a combination thereof: PET board, CPC board and HPC board; the thickness of the panel 2 and the back panel 3 is greater than or equal to 0.3 mm (millimeter) and less than or equal to 0.6 mm.

[0047] In this embodiment, if Figure 1 As shown, the panel 2 and the back plate 3 can be made of one of the following or a combination thereof: PET board, CPC board and HPC board. Specifically, the panel 2 and the back plate 3 can be made of the same material or different materials. When the panel 2 and the back plate 3 are made of the same material, the processing technology is simpler and the production cycle of the solar photovoltaic panel can be shortened. At the same time, the thickness of the panel 2 and the back plate 3 is required to be greater than or equal to 0.3 mm to ensure that the panel 2 and the back plate 3 have a certain strength. At the same time, the thickness of the panel 2 and the back plate 3 is required to be less than or equal to 0.6 mm to ensure that the thickness of the solar photovoltaic panel is low.

[0048] In some possible embodiments, the thickness of the nano coating 6 is greater than or equal to 80 nm (nanometers) and less than or equal to 100 nm.

[0049] In this embodiment, if Figure 1 As shown, the thickness of the nano coating 6 after drying needs to be greater than or equal to 80nm, ensuring that the nano coating 6 can still suppress the static electricity generated on the surface of the front panel substrate under a certain wear and tear, making it difficult for dust to adhere to the coating surface, achieving self-cleaning and anti-dust accumulation effects, and at the same time limiting the thickness of the nano coating 6 after drying to be less than or equal to 100nm, thereby ensuring that the thickness of the solar photovoltaic panel is low.

[0050] In some possible embodiments, the first reinforcement layer 40 includes: a glass fiber composite resin layer; and / or the second reinforcement layer 42 includes: a glass fiber composite resin layer; the thickness of the first reinforcement layer 40 is greater than or equal to 0.3 mm and less than or equal to 0.45 mm; and / or the thickness of the second reinforcement layer 42 is greater than or equal to 0.3 mm and less than or equal to 0.45 mm.

[0051] In this embodiment, if Figure 1 As shown, the first reinforcement layer 40 and the second reinforcement layer 42 are selected from glass fiber composite resin layers. The glass fiber resin material has high strength, good corrosion resistance, and excellent electrical properties. It can ensure the strength of the solar photovoltaic panel while preventing the battery inside the solar photovoltaic panel from being corroded, and can place the battery power between the first reinforcement layer 40 and the second reinforcement layer 42 to prevent the battery from leaking after long-term use. It is further limited that the thickness of the first reinforcement layer 40 and the second reinforcement layer 42 needs to be greater than or equal to 0.3mm, thereby ensuring that the first reinforcement layer 40 and the second reinforcement layer 42 can ensure the strength of the solar photovoltaic panel while preventing the battery inside the solar photovoltaic panel from being corroded, and can place the battery power between the first reinforcement layer 40 and the second reinforcement layer 42 to prevent the battery from leaking after long-term use. At the same time, the thickness of the first reinforcement layer 40 and the second reinforcement layer 42 is limited to be less than or equal to 0.45mm, thereby ensuring that the thickness of the solar photovoltaic panel is low.

[0052] In some possible embodiments, the solar photovoltaic panel also includes a first packaging film 50, which is arranged between the cell string layer 1 and the first reinforcement layer 40; and / or a second packaging film 52, which is arranged between the cell string layer 1 and the second reinforcement layer 42; and / or a third packaging film 54, which is arranged between the first reinforcement layer 40 and the panel 2; and / or a fourth packaging film 56, which is arranged between the second reinforcement layer 42 and the back panel 3.

[0053] In this embodiment, if Figure 1 As shown, the battery string layer 1, the first reinforcement layer 40, the second reinforcement layer 42, the panel 2 and the back panel 3 are all connected by a packaging film.

[0054] In some possible embodiments, the first packaging film 50 includes: a POE (Polyolefin Elastomer) film; and / or the second packaging film 52 includes: a POE film; and / or the third packaging film 54 includes one of the following or a combination thereof: a POE film, an EVA (Ethylene-vinyl Acetate copolymer) film and an EPE film (a co-extruded film composed of EVA / POE / EVA); and / or the fourth packaging film 56 includes one of the following or a combination thereof: a POE film, an EVA film and an EPE film; the thickness of the first packaging film 50 is greater than or equal to 0.4 mm and less than or equal to 0.7 mm; and / or the thickness of the second packaging film 52 is greater than or equal to 0.4 mm and less than or equal to 0.7 mm; and / or the thickness of the third packaging film 54 is greater than or equal to 0.3 mm and less than or equal to 0.7 mm; and / or the thickness of the fourth packaging film 56 is greater than or equal to 0.3 mm and less than or equal to 0.7 mm.

[0055] In this embodiment, if Figure 1 As shown, the first packaging film 50 and the second packaging film 52 are made of POE film. Since the first packaging film 50 and the second packaging film 52 are used to connect the battery string layer 1, it is necessary to use a POE film with better weather resistance and not corroded by chemical substances. The third packaging film 54 and the fourth packaging film 56 are used to connect the reinforcement layer and the panel 2 and the back panel 3. Therefore, there are many materials to choose from, and EVA film or EPE film with better light transmittance and adhesion can be selected. Furthermore, the first packaging film 50 and the second packaging film 52 are thicker than the third packaging film 54 and the fourth packaging film 56 because they need to protect the battery. At the same time, in order to ensure that the thickness of the solar photovoltaic panel is small, the thickness of the packaging film must be less than or equal to 0.7mm.

[0056] In some possible embodiments, Figure 1 and Figure 3 As shown, the battery string layer 1 includes a plurality of batteries; the batteries include one of the following or a combination thereof: XBC batteries (Back contact solar cells) and MWT (Metal Wrap Through) batteries.

[0057] In this embodiment, the multiple cells constituting the cell string layer 1 are preferably XBC cells or MWT cells, and there are no metal grid lines in the shingles of these two types of cells, and both positive and negative metal electrodes can be led out from the back plate 3. This can improve the lighting effect on the front side of the solar photovoltaic panel.

[0058] In some possible embodiments, the battery string layer 1 includes a plurality of batteries; the battery includes one of the following or a combination thereof: a PERC (Passivated Emitter and Rear cell) battery, a TOPCON (Tunnel Oxide Passivated Contact) battery, and a HJT (Heterojunction with Intrinsic Thin-film) battery.

[0059] In this embodiment, the multiple cells constituting the cell string layer 1 can be selected from one of PERC cells, TOPCON cells and HJT cells. These three types of cells have grid cell sheets on both the front and back sides, and have higher efficiency and stability.

[0060] In some possible embodiments, the thickness of the solar photovoltaic panel is less than 3 mm, and the weight of the solar photovoltaic panel per square meter is less than 3.8 kg.

[0061] In this embodiment, the thickness of the solar photovoltaic panel needs to be less than 3 mm, that is, the total thickness of the battery string layer 1, the first reinforcement layer 40, the second reinforcement layer 42, the panel 2, the back sheet 3 and the packaging film needs to be less than 3 mm, and the minimum thickness of the first reinforcement layer 40, the second reinforcement layer 42, the panel 2, the back sheet 3 and the packaging film must be met. Through the above design, the weight of the solar photovoltaic panel per square meter is less than 3.8 kg. The lightweight solar photovoltaic panel is achieved.

[0062] In some possible embodiments, the solar photovoltaic panel includes: a battery area 7 and a non-battery area 8; the battery string layer 1 is arranged in the battery area 7; and a plurality of positioning and mounting holes 82 and / or a plurality of dust and drainage holes 84 are provided on the non-battery area 8.

[0063] In this embodiment, if Figure 2 As shown, the solar photovoltaic panel includes a battery area 7 and a non-battery area 8, wherein the battery string layer 1 is arranged in the battery area 7, and a plurality of positioning and mounting holes 82 and ash and drainage holes 84 are arranged in the non-battery area 8, so that the solar photovoltaic panel can be installed in a designated position without setting a frame, and automatic drainage and ash discharge can be achieved to ensure the cleanliness of the solar photovoltaic panel.

[0064] Specifically, the positioning and mounting hole 82 is an eyelet positioning and mounting hole.

[0065] The solar photovoltaic panel in the utility model is a light and high-strength double-sided photovoltaic component with a symmetrical packaging structure, a stable structure, a component thickness of less than 3mm, and a weight of less than 3.8kg / m 2(kilograms per square meter), there are eyelets on both sides of the component for easy fixing, installation and disassembly. The solar photovoltaic panel is a lightweight and high-strength component formed by lamination, and the surface is coated with a layer of PET super-hydrophilic nano-single-component thermal curing coating, which has super weather resistance and wear resistance. At the same time, it can suppress the static electricity generated on the surface of the front panel substrate, making it difficult for dust to adhere to the coating surface, and achieve self-cleaning and anti-dust accumulation effects. The lightweight double-sided self-cleaning photovoltaic component with a symmetrical packaging structure is installed at an angle of 15°-30° when installed on the roof or color steel roof. The water contact angle after coating is less than 10°. The dust will be washed away by rainwater and discharged through the dust drainage hole 84, maintaining the light transmittance and cleanliness of the surface of the photovoltaic component. The actual power generation gain is increased by an average of 1.5%-2.0% compared with conventional components.

[0066] In some possible embodiments, the solar photovoltaic panel includes:

[0067] 1. The packaging front plate (i.e., panel) is one of the transparent PET, CPC, or HPC film materials with a thickness of 0.3mm-0.6mm.

[0068] 2. The third packaging film is made of EVA or POE material or EPE (EVA / POE / EVA co-extruded film), and the thickness of EVA and POE is 0.3mm-0.7mm.

[0069] 3. The first impact-resistant reinforcement layer (i.e., the first reinforcement layer) is made of glass fiber composite resin material with a thickness of 0.3 mm to 0.45 mm and a glass fiber ratio of 50% to 65%. The composite resin can be one of acrylic resin or epoxy resin, and the composite resin ratio is 35% to 50%.

[0070] 4. The first packaging film is made of POE film material with a thickness of 0.4mm-0.7mm.

[0071] 5. The preferred battery string layer is XBC, MWT, or one of the batteries with no metal grid lines and positive and negative metal electrodes led out from the back. The second preferred battery layer is one of the batteries with grid lines on both the front and back sides, such as PERC, TOPCON, or HJT.

[0072] 6. The second packaging film is made of POE film material with a thickness of 0.4mm-0.7mm.

[0073] 7. The second impact-resistant reinforcement layer (i.e., the second reinforcement layer) is made of the same material as the first reinforcement layer to maintain a good symmetrical structure.

[0074] 8. The fourth packaging film is made of EVA or POE material or EPE (EVA / POE / EVA co-extruded film). The thickness of EVA and POE is 0.3mm-0.7mm.

[0075] 9. The packaging backplane is one of the transparent PET, CPC or HPC film materials with a thickness of 0.3mm-0.6mm.

[0076] The active ingredients of the nano coating are alkali metal silicate M, a highly active silicon-oxygen oligomer that can form a film on its own. 2 O·mSiO 2 ·nH 2 O, inorganic nano-SiO 2 , TiO 2 , SnO 2 The particles are composed of H 2 O、CH 3 CH 2 OH and CH 3 COOH composition, the coating wet film thickness is 300nm ~ 350nm, the thermal curing temperature is 80 ℃ -100 ℃, the time is 8min-10min, the dry film thickness after curing is 80nm ~ 100nm, and the coating hardness after heating and curing can reach 5HB.

[0077] In this specification, the term "plurality" means two or more than two, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.

[0078] In the description of this specification, the description of the terms "one embodiment", "some embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0079] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A solar photovoltaic panel, characterized in that: include: Battery string layer; A panel, arranged on one side of the battery string layer; A back plate, arranged on the other side of the battery string layer; A first reinforcement layer, disposed between the battery string layer and the panel; A second reinforcement layer, disposed between the battery string layer and the back plate; The nano coating is arranged on a side of the panel away from the battery string layer.

2. The solar photovoltaic panel according to claim 1, characterized in that: The front panel is a light-transmitting panel, and the back panel is a light-transmitting panel.

3. The solar photovoltaic panel according to claim 2, characterized in that: The panel comprises one or a combination of the following: a PET board, a CPC board and a HPC board; and / or The back sheet includes one of the following or a combination thereof: a PET sheet, a CPC sheet, and a HPC sheet; The thickness of the front panel and the back panel is greater than or equal to 0.3 mm and less than or equal to 0.6 mm.

4. The solar photovoltaic panel according to claim 1, characterized in that: The thickness of the nano coating is greater than or equal to 80 nm and less than or equal to 100 nm.

5. The solar photovoltaic panel according to claim 1, characterized in that: The first reinforcement layer comprises: a glass fiber composite resin layer; and / or The second reinforcement layer comprises: a glass fiber composite resin layer; The thickness of the first reinforcement layer is greater than or equal to 0.3 mm and less than or equal to 0.45 mm; and / or The thickness of the second reinforcement layer is greater than or equal to 0.3 mm and less than or equal to 0.45 mm.

6. The solar photovoltaic panel according to any one of claims 1 to 5, characterized in that: Also includes: A first packaging film, disposed between the battery string layer and the first reinforcement layer; and / or A second packaging film is arranged between the battery string layer and the second reinforcement layer; and / or A third packaging film is arranged between the first reinforcement layer and the panel; and / or A fourth packaging film is arranged between the second reinforcement layer and the back plate.

7. The solar photovoltaic panel according to claim 6, characterized in that: The first packaging film includes: a POE film; and / or The second packaging film includes: a POE film; and / or The third packaging film includes one of the following or a combination thereof: POE film, EVA film and EPE film; and / or The fourth packaging film includes one of the following or a combination thereof: POE film, EVA film and EPE film; The thickness of the first packaging film is greater than or equal to 0.4 mm and less than or equal to 0.7 mm; and / or The thickness of the second packaging film is greater than or equal to 0.4 mm and less than or equal to 0.7 mm; and / or The thickness of the third packaging film is greater than or equal to 0.3 mm and less than or equal to 0.7 mm; and / or The thickness of the fourth packaging film is greater than or equal to 0.3 mm and less than or equal to 0.7 mm.

8. The solar photovoltaic panel according to any one of claims 1 to 5, characterized in that: The battery string layer includes a plurality of batteries; The battery includes one or a combination of the following: an XBC battery and an MWT battery.

9. The solar photovoltaic panel according to any one of claims 1 to 5, characterized in that: The thickness of the solar photovoltaic panel is less than 3 mm, and the weight of the solar photovoltaic panel per square meter is less than 3.8 kg.

10. The solar photovoltaic panel according to any one of claims 1 to 5, characterized in that: include: Battery area and non-battery area; The battery string layer is arranged in the battery area; A plurality of positioning and mounting holes and / or a plurality of ash and water discharge holes are arranged on the non-battery area.

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