Panel for photovoltaic module and photovoltaic module

Abstract

The embodiment of the utility model provides a panel for a photovoltaic module and the photovoltaic module, and relates to the field of photovoltaic technology. The photovoltaic module comprises a panel, the panel comprises a fitting part and a wrapping part, the fitting part is used for being bonded with the adhesive film of the laminated piece, the wrapping part is connected to at least one side edge of the fitting part, the wrapping part is used for being bonded with the peripheral wall corresponding to the laminated piece in a wrapping mode, and the wrapping part is made of a flexible material. A layer of waterproof protection is additionally provided for the peripheral wall of the laminated piece through the coating part, external water vapor can be effectively prevented from immersing into the battery layer from the peripheral wall of the laminated piece, and the coating part is made of a flexible material, so that the fitting tightness of the coating part and the peripheral wall of the laminated piece can be improved, the failure of the photovoltaic module is avoided, and the service life of the photovoltaic module is prolonged. Therefore, the waterproof effect of the photovoltaic module is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaics, in particular to a laminate and a photovoltaic assembly. Background Art

[0002] Photovoltaic modules are devices that convert solar energy into electrical energy. They are mainly composed of materials such as cells, films, tempered glass, panels, welding strips, silicone, junction boxes, frames, etc. These modules are sealed into a whole by connecting a certain number of single cells in series or parallel to prevent corrosion of the cell electrodes and interconnects. The packaging also prevents the cells from breaking, making outdoor installation easier.

[0003] In the related art, in order to meet the waterproof performance requirements of the module, some water-blocking materials are added to the connection between the laminate and the frame, such as silicone, foam tape, etc. The water-blocking material and the laminate in the water-blocking scheme in the related art are completely two separate structures, which inevitably produce gaps during use or transportation, and easily cause the failure of the photovoltaic module. Utility Model Content

[0004] The purpose of the utility model is to provide a panel and a photovoltaic module for a photovoltaic module, which can form an additional water-blocking structure on at least part of the outer peripheral wall of the battery layer and the end plate through the covering portion, thereby improving the waterproof effect of the laminate, avoiding failure of the photovoltaic module, and ensuring the service life of the photovoltaic module.

[0005] The embodiment of the utility model is achieved as follows:

[0006] In a first aspect, the utility model provides a panel for a photovoltaic module, the panel comprising:

[0007] A bonding part, which is used for bonding with the adhesive film of the laminate;

[0008] A covering portion, which is arranged on at least one side of the laminating portion and is used for covering and bonding the corresponding peripheral wall of the laminate;

[0009] Wherein, the covering part is made of flexible material.

[0010] In an optional embodiment, one end of the covering portion away from the bonding portion can extend toward a side of the laminate away from the bonding portion to form a folded edge, and the folded edge is used to cover the edge of the side of the laminate away from the bonding portion.

[0011] In an optional embodiment, the laminating portion is provided with covering portions around the laminating portion, and the covering portions around the laminating portion are used to cover and bond the outer peripheral wall of the laminate.

[0012] In an alternative embodiment, at least one of the plurality of covering portions can extend to a side surface of the laminate facing away from the fitting portion, so as to form a folding edge for covering an edge on a side of the laminate facing away from the fitting portion.

[0013] In an alternative embodiment, the plurality of covering portions can all extend and be arranged on a side surface of the laminate facing away from the fitting portion, so as to form a folding edge.

[0014] In an alternative embodiment, the covering portion can be bonded to the outer peripheral wall of the laminate and the outer peripheral wall of the end plate through a water-blocking adhesive, and the folding edge can be bonded to a side of the laminate facing away from the fitting portion through the water-blocking adhesive.

[0015] In an alternative embodiment, the panel is the back plate or the front plate of the laminate.

[0016] In an alternative embodiment, the panel is of an integral structure.

[0017] In an alternative embodiment, when the panel is the back plate of the laminate, the panel includes a first weather-resistant layer and a first water-blocking layer arranged in a stacked manner; or the panel includes a first weather-resistant layer, a first reinforcing layer, and a first water-blocking layer arranged in a stacked manner, and two sides of the first reinforcing layer are respectively bonded to the first water-blocking layer and the first weather-resistant layer.

[0018] In an alternative embodiment, the first weather-resistant layer is made of at least one material selected from polyvinylidene fluoride, polyvinyl fluoride, and polyester, and / or the first water-blocking layer is made of at least one material selected from polyvinylidene fluoride, polyvinyl fluoride, polyethylene terephthalate, polyethylene, or polypropylene, and / or the first reinforcing layer is made of polyester.

[0019] In an alternative embodiment, when the panel is the front plate of the laminate, the panel is made of a transparent material; the panel includes a second water-blocking layer and a second reinforcing layer arranged in a stacked manner, and / or the panel includes a second weather-resistant layer, a second reinforcing layer, and a second water-blocking layer arranged in a stacked manner.

[0020] In an alternative embodiment, the second water-blocking layer is made of at least one material selected from ethylene-tetrafluoroethylene copolymer, acrylic polymer, and glass fiber, and / or the second reinforcing layer is made of glass fiber, and / or the second weather-resistant layer is made of at least one material selected from fluorine and polyester.

[0021] In a second aspect, the present utility model provides a photovoltaic module, including a stacked structure of a panel, a second adhesive film, a battery layer, a first adhesive film, and an end plate according to any one of the foregoing embodiments.

[0022] In an alternative embodiment, the photovoltaic module further includes a frame and a sealant. The stacked structure is laminated to form a laminate, and a sealant is provided between the laminate and the frame.

[0023] The beneficial effects of the embodiments of the present utility model are as follows: A panel and a photovoltaic module provided by the embodiments of the present utility model, the photovoltaic module includes a panel, the panel includes a bonding portion and a covering portion, the bonding portion is used for bonding with the adhesive film of the lamination, the covering portion is connected to at least one side edge of the bonding portion, the covering portion is used for covering and bonding with the corresponding outer peripheral wall of the lamination, and the covering portion is made of a flexible material. By providing a layer of water-blocking protection for the lamination through the covering portion, it can effectively prevent external water vapor from infiltrating into the battery layer from the outer peripheral wall of the lamination, and since the covering portion is made of a flexible material, it can improve the fitting tightness between the covering portion and the outer peripheral wall of the lamination, avoid the failure of the photovoltaic module, and improve the waterproof effect of the photovoltaic module. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other relevant drawings can also be obtained based on these drawings.

[0025] Figure 1 It is a schematic structural diagram of the panel provided by the embodiments of the present utility model;

[0026] Figure 2 It is a partial schematic cross-sectional view of the photovoltaic module provided by the embodiments of the present utility model;

[0027] Figure 3 It is a schematic structural diagram of the photovoltaic module provided by the embodiments of the present utility model;

[0028] Figure 4 It is an exploded schematic diagram of the backplane, battery layer and front plate before lamination provided by the embodiments of the present utility model;

[0029] Figure 5 It is a schematic structural diagram of the covering portion during the folding process after lamination of the backplane, battery layer and front plate provided by the embodiments of the present utility model;

[0030] Figure 6 It is a schematic structural diagram of the frame provided by the embodiments of the present utility model.

[0031] Reference numerals: 1 - photovoltaic module; 100 - lamination; 110 - end plate; 120 - battery layer; 130 - panel; 131 - bonding portion; 132 - covering portion; 133 - folding edge; 140 - first adhesive film; 150 - frame; 151 - first side plate; 152 - second side plate; 153 - enclosing plate; 160 - sealant; 170 - second adhesive film. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Components of the embodiments of the present utility model described and illustrated in the accompanying drawings here can be arranged and designed in a variety of different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0034] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0035] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0036] In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0037] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0038] The following will introduce in detail the specific structure of a photovoltaic module provided by an embodiment of the present invention and the corresponding technical effects brought thereby with reference to the patent drawings.

[0039] Please refer to Figures 1 - 4 , a panel 130 for a photovoltaic module provided by an embodiment of the present invention, the panel 130 includes a bonding portion 131 and a covering portion 132.

[0040] It is easy to understand that the photovoltaic module 1 includes a laminate 100, and the laminate 100 includes a panel 130, a second encapsulant film 170, a cell layer 120, a first encapsulant film 140, and an end plate 110 arranged in sequence.

[0041] It should be noted that in this embodiment, the panel 130 can be the back plate or the front plate of the laminate 100. That is to say, when the panel 130 is the back plate, the above-mentioned end plate 110 is the front plate, and when the panel 130 is the front plate, the above-mentioned end plate 110 is the back plate.

[0042] The bonding portion 131 is used for bonding with the encapsulant film of the laminate 100. That is to say, the bonding portion 131 is used for bonding with the side of the first encapsulant film 140 away from the cell layer 120. The covering portion 132 is arranged on at least one side edge of the bonding portion 131. The covering portion 132 is used for covering and bonding with the corresponding outer peripheral wall of the laminate 100. That is to say, the covering portion 132 is used for covering and bonding the outer peripheral wall corresponding to the cell layer 120 and the outer peripheral wall corresponding to the end plate 110. The covering portion 132 is made of a flexible material.

[0043] It can be understood that when the panel 130 is applied to the laminate 100, the bonding portion 131 is bonded with the side of the first encapsulant film 140 away from the cell layer 120, and the covering portion 132 extends upward to at least cover and bond the outer peripheral wall corresponding to the cell layer 120 and the outer peripheral wall corresponding to the end plate 110. The covering portion 132 is made of a flexible material.

[0044] It should be noted that the bonding portion 131 has a plurality of side edges connected end to end in sequence. That is to say, in some alternative embodiments, the bonding portion 131 can have the covering portion 132 arranged on only one side. The covering portion 132 extends upward. The cell layer 120 and the end plate 110 also have a plurality of side edges connected end to end in sequence, and the plurality of side edges of the bonding portion 131, the cell layer 120, and the end plate 110 correspond one by one. Therefore, for the cell layer 120 and the end plate 110, the side edges corresponding to the side of the bonding portion 131 where the covering portion 132 is arranged will be covered by the covering portion 132 extending upward. The covering portion 132 can provide a water-blocking structure for the cell layer 120 and the end plate 110, which can prevent external water vapor from infiltrating. And since the covering portion 132 is made of a flexible material, it can improve the fitting tightness between the covering portion 132 and the outer peripheral walls of the cell layer 120 and the end plate 110.

[0045] Through the covering part 132, an additional water-blocking structure can be formed on at least a part of the outer peripheral wall of the battery layer 120 and the end plate 110, thereby improving the waterproof effect of the laminate 100, avoiding the failure of the photovoltaic module 1, and further ensuring the service life of the photovoltaic module 1.

[0046] In this embodiment, covering parts 132 are arranged around the fitting part 131. The covering parts 132 around the fitting part 131 are used to cover and bond the outer peripheral wall of the laminate 100. That is to say, the covering parts 132 around the fitting part 131 are used to cover and bond the outer peripheral wall of the battery layer 120 and the outer peripheral wall of the end plate 110.

[0047] Optionally, in some embodiments, the multiple covering parts 132 are connected end to end in sequence, so as to completely cover the peripheral wall of the laminate 100 and ensure the sealing performance at the adjacent peripheral walls of the laminate 100.

[0048] Certainly, in some other embodiments, the covering parts 132 among the multiple covering parts 132 can be independent covering parts 132, that is, the multiple covering parts 132 are not connected end to end in sequence, and the multiple covering parts 132 are respectively covered on the corresponding outer peripheral walls of the laminate 100.

[0049] Therefore, for the laminate 100 with the panel 130, the covering parts 132 around the fitting part 131 in the panel 130 cover and bond the outer peripheral wall of the battery layer 120 and the outer peripheral wall of the end plate 110 to achieve water blocking around the laminate 100.

[0050] In this embodiment, the panel 130 is an integral structure. That is to say, the covering part 132 and the fitting part 131 are integrally arranged, and the covering part 132 and the fitting part 131 are two parts of an integral structure, ensuring that the covering part 132 and the fitting part 131 have sufficient connection strength, and also being able to avoid the situation that water vapor infiltrates due to the gap at the connection between the covering part 132 and the fitting part 131.

[0051] The panel 130 is an integral structure. Therefore, the panel 130 in this embodiment is made of a flexible material.

[0052] In order to further improve the water-blocking ability of the photovoltaic module 1, one end of the covering portion 132 away from the fitting portion 131 can extend toward the side of the laminate 100 facing away from the fitting portion 131 to form a folded edge 133 for covering the edge of the side of the laminate 100 facing away from the fitting portion 131. In other words, one end of the covering portion 132 away from the fitting portion 131 can extend toward the side of the end plate 110 away from the second adhesive film 170 to cover the edge of the side of the end plate 110 away from the battery layer 120, thereby improving the waterproof performance of the photovoltaic module 1. Of course, in some alternative embodiments, the covering portion 132 in the panel 130 can also only cover the outer peripheral walls of the battery layer 120 and the end plate 110.

[0053] Optionally, in order to further improve the waterproof effect, the covering portion 132 is bonded to the outer peripheral wall of the laminate 100 by a water-blocking adhesive, and the folded edge 133 can be bonded to the side of the laminate 100 facing away from the fitting portion 131 by the water-blocking adhesive. In other words, the covering portion 132 is bonded to the outer peripheral walls of the battery layer 120 and the end plate 110 by the water-blocking adhesive, and the folded edge 133 can be bonded to the side of the end plate 110 away from the first adhesive film 140 by the water-blocking adhesive. The water-blocking adhesive can effectively prevent external water vapor from infiltrating, thereby improving the water-blocking ability of the photovoltaic module 1.

[0054] Of course, when the covering portion 132 in the integrally structured panel 130 covers the edge of the side of the end plate 110 away from the battery layer 120, the covering portion 132 can also be bonded to the side of the end plate 110 away from the battery layer 120 by a water-blocking adhesive.

[0055] Among them, the water-blocking adhesive can be PS glue, PC glue, PA glue, PP glue, PE glue, rubber glue, polyurethane glue or butyl glue. Of course, the waterproof adhesive can also be other types of glue.

[0056] Of course, in some other alternative embodiments, the covering portion 132 can also be bonded to the outer peripheral wall of the end plate 110, the outer peripheral wall of the battery layer 120, and the side of the end plate 110 away from the battery layer 120 by other types of adhesives.

[0057] Optionally, at least one of the plurality of covering portions 132 can extend to the side surface of the laminate 100 away from the bonding portion 131 to form a folded edge 133 for covering the edge of the laminate 100 on the side away from the bonding portion 131. In other words, at least one of the plurality of covering portions 132 can extend to the side surface of the end plate 110 away from the second adhesive film 170, and the folded edge 133 is used to cover the edge of the end plate 110 on the side away from the battery layer 120. When the panel 130 is applied to the laminate 100, the plurality of covering portions 132 cover and bond the outer peripheral walls of the battery layer 120 and the end plate 110, and at least one of the plurality of covering portions 132 can form a folded edge 133 that extends to the side of the end plate 110 away from the second adhesive film 170. The folded edge 133 faces the end plate 110 to cover the edge of the end plate 110 on the side away from the battery layer 120.

[0058] In this embodiment, the plurality of covering portions 132 can all extend to the side surface of the laminate 100 away from the bonding portion 131 to form a folded edge 133. In other words, the plurality of covering portions 132 can all extend to the side surface of the end plate 110 away from the second adhesive film 170. That is to say, when the panel 130 is applied to the laminate 100, the plurality of covering portions 132 cover and bond the outer peripheral walls of the battery layer 120 and the end plate 110, and the plurality of covering portions 132 can all form a folded edge 133 that extends to the side of the end plate 110 away from the second adhesive film 170. The folded edge 133 faces the end plate 110 to cover the edge of the end plate 110 on the side away from the battery layer 120. That is to say, the edges of the side surface of the end plate 110 away from the second adhesive film 170 are all covered by the folded edge 133, ensuring the water-blocking effect of the laminate 100. The folded edge 133 is bonded to the side of the end plate 110 away from the battery layer 120.

[0059] In this embodiment, the panel 130 is made of a flexible material. It can be understood that since the integral panel 130 is made of a flexible material, the panel 130 can better follow the deformation of the battery layer 120.

[0060] When the panel 130 is the back plate of the laminate 100 and the panel 130 is of an integral structure, the panel 130 includes a first weather-resistant layer and a first water-blocking layer arranged in a stacked manner. That is to say, it can be understood that the weather-resistant layer can be understood to have the characteristics of anti-ultraviolet, anti-wind and sand, acid and alkali resistance, and anti-aging. Water-blocking can be understood as being able to prevent water vapor from entering the battery layer 120 and improve the waterproof effect.

[0061] For the panel 130, both the first weather-resistant layer and the first water-blocking layer can serve as the inner layer structure. That is to say, when the first weather-resistant layer is the inner layer structure, the first weather-resistant layer of the bonding portion 131 is used to bond to the side of the second adhesive film 170 away from the battery layer 120. When the first water-blocking layer is the inner layer structure, the first water-blocking layer of the bonding portion 131 is used to bond to the side of the second adhesive film 170 away from the battery layer 120.

[0062] Specifically, the panel 130 further includes a first reinforcing layer. The reinforcing layer is located between the first weather-resistant layer and the first water-blocking layer. Both sides of the first reinforcing layer are bonded to the first weather-resistant layer and the first water-blocking layer respectively. It can be understood that the first reinforcing layer can enhance the mechanical strength of the panel 130.

[0063] In some alternative embodiments, the first water-blocking layer, the first weather-resistant layer, and the first reinforcing layer are all made of flexible materials. Among them, the first weather-resistant layer can be made of organic polymer materials such as PVDF (polyvinylidene fluoride), PVF (polyvinyl fluoride), and PET (polyester). The first water-blocking layer can be made of organic polymer materials such as PVDF, PVF, PET, polyethylene, polypropylene, polyurethane film, polyvinyl butyral, polyimide film, or polyethylene naphthalate. Among them, the first reinforcing layer can be made of organic polymer materials such as PET.

[0064] It can be understood that polyvinylidene fluoride has good chemical resistance, weather resistance, and temperature resistance. Polyvinyl fluoride also has good chemical resistance, weather resistance, and temperature resistance. Polyester has characteristics such as light weight and low density. And polyvinylidene fluoride, polyvinyl fluoride, and polyester all have a certain degree of flexibility.

[0065] The panel 130 can be formed by laminating the first weather-resistant layer, the first reinforcing layer, and the first water-blocking layer in sequence. Among them, there is an adhesive layer between the first weather-resistant layer and the first reinforcing layer, and there is also an adhesive layer between the first reinforcing layer and the first water-blocking layer. After the lamination is completed, an integrated panel 130 with flexible characteristics is formed.

[0066] Therefore, the panel 130 formed by laminating the first weather-resistant layer, the first reinforcing layer, and the first water-blocking layer has a certain degree of flexibility. It can not only achieve back water-blocking of the battery layer 120 through the bonding portion 131 on the side of the battery layer 120 away from the end plate 110, but also be folded to form a covering portion 132, and make the covering portion 132 cover the outer peripheral wall of the battery layer 120 and the outer peripheral wall of the end plate 110 to achieve water-blocking around the battery layer 120 and the end plate 110. In some embodiments, the end of the covering portion 132 away from the bonding portion 131 can continue to be folded to form a folding edge 133 opposite to the bonding portion 131, and make the folding edge 133 cover the edge of the end plate 110 on the side away from the battery layer 120, thereby further improving the water-blocking ability of the photovoltaic module 1.

[0067] Of course, in some other embodiments, when the integrated panel 130 serves as the backplane, it is not limited to being formed by laminating the above-mentioned first weather-resistant layer, first reinforcing layer, and first water-blocking layer. It can also be made of a single-layer flexible water-blocking material.

[0068] When the panel 130 is the front panel of the laminate 100 and the panel 130 has an integrated structure, the panel 130 is made of a transparent material and includes a second water-blocking layer and a second reinforcing layer that are laminated. It can be understood that both the second water-blocking layer and the second reinforcing layer are made of transparent materials to ensure that external light can pass through the panel 130.

[0069] Among them, the second water-blocking layer can be made of (ETFE, Ethylene-Tetrafluoroethylene) ethylene-tetrafluoroethylene copolymer film, acrylic polymer, glass fiber, or other water-blocking materials, and the second reinforcing layer can be made of materials such as glass fiber that can increase the strength of the panel 130. Among them, when the panel is the front panel, both the second reinforcing layer and the second water-blocking layer can be used as the inner layer structure. That is, when the second reinforcing layer is the inner layer structure, the second reinforcing layer of the fitting portion 131 is used to bond to the side of the second adhesive film 170 away from the battery layer 120. When the second water-blocking layer is the inner layer structure, the second water-blocking layer of the fitting portion 131 is used to bond to the side of the second adhesive film 170 away from the battery layer 120.

[0070] Of course, in some other embodiments, when the panel 130 is the front panel, the panel 130 includes a second weather-resistant layer, a second reinforcing layer, and a second water-blocking layer that are sequentially laminated. The second weather-resistant layer can improve the ultraviolet resistance, wind and sand resistance, acid and alkali resistance, and anti-aging performance of the panel 130. The second water-blocking layer can improve the waterproof performance of the panel 130, and the second reinforcing layer can improve the structural strength of the panel 130.

[0071] Among them, when the panel 130 is the front panel and the panel 130 includes a second weather-resistant layer, a second reinforcing layer, and a second water-blocking layer that are sequentially laminated, both the second weather-resistant layer and the second water-blocking layer can be used as the inner layer structure. That is, when the second weather-resistant layer is the inner layer structure, the second weather-resistant layer of the fitting portion 131 is used to bond to the side of the second adhesive film 170 away from the battery layer 120. When the second water-blocking layer is the inner layer structure, the second water-blocking layer of the fitting portion 131 is used to bond to the side of the second adhesive film 170 away from the battery layer 120.

[0072] Among them, the second weather-resistant layer can be a coating applied on the second reinforcing layer, and the coating can be made of fluorine coating. The second reinforcing layer can be an organic polymer material such as PET, which can enhance the strength of the panel 130, and can also play the roles of electrical insulation and water resistance. The second water-blocking layer can be a layer material structure composed of an acrylic polymer and glass fiber. Of course, in some other embodiments, the second water-blocking layer can also be made of other materials that can block water, are transparent and flexible.

[0073] Optionally, please continue to refer to Figure 4 , the laminate 100 is laminated by a panel 130, a second adhesive film 170, a battery layer 120, a first adhesive film 140, and an end plate 110. Please refer to Figure 4 , the first adhesive film 140 between the battery layer 120 and the fitting portion 131 will overflow to the periphery of the battery layer 120 and the fitting portion 131, and the second adhesive film 170 between the battery layer 120 and the end plate 110 will also overflow to the periphery of the battery layer 120 and the end plate 110.

[0074] After lamination, please continue to refer to Figure 5 , the user can fold the panel 130 to form a fitting portion 131 and a covering portion 132. The fitting portion 131 is located on the side of the battery layer 120 away from the end plate 110, and the covering portion 132 covers the outer peripheral walls of the battery layer 120 and the end plate 110 to block water around the battery layer 120 and the end plate 110. At this time, the covering portion 132 and the outer peripheral walls of the battery layer 120 and the end plate 110 can be bonded through the overflowed adhesive film. In some embodiments, the end of the covering portion 132 away from the fitting portion 131 can be further folded to form a folding edge 133 opposite to the fitting portion 131, and the folding edge 133 covers the edge of the end plate 110 on the side away from the battery layer 120, thereby further improving the water-blocking ability of the photovoltaic module 1. At this time, there is also an overflowed adhesive film between the covering portion 132 and the outer peripheral walls of the battery layer 120 and the end plate 110 on the folding edge 133. Please continue to refer to Figure 1 , to realize the bonding between the folding edge 133 and the edge of the end plate 110 on the side away from the battery layer 120 to form an integrated laminate 100. It can be understood that through the above-mentioned integrated panel 130, the edge trimming operation does not have to be performed.

[0075] Of course, in some other embodiments, the panel 130 may also be a split structure. It should be noted that when the panel 130 is a split structure, it can be understood that the covering portion 132 and the fitting portion 131 in the panel 130 are two independent structures respectively. That is to say, at this time, the fitting portion 131 can be bonded to the side of the battery layer 120 away from the end plate 110, the covering portion 132 covers the outer peripheral wall of the battery layer 120 and the outer peripheral wall of the end plate 110, and the covering portion 132 is also bonded to the fitting portion 131. The water resistance of the side of the battery layer 120 away from the end plate 110 is achieved through the fitting portion 131, and the water resistance of the outer peripheral wall of the battery layer 120 and the outer peripheral wall of the end plate 110 is achieved through the covering portion 132.

[0076] Of course, in order to improve the water resistance effect of the photovoltaic module 1, the covering portion 132 in the split panel 130 also covers the edge of the end plate 110 on the side away from the battery layer 120.

[0077] Optionally, when the panel 130 is a backsheet, the end plate 110 is a front plate, and the end plate 110 can be made of one of glass material, acrylic material, and tetrafluoroethylene copolymer material.

[0078] Among them, the glass material can be one of chemically tempered glass, physically strengthened tempered glass, and physically tempered glass.

[0079] Chemically tempered glass is usually a silicate glass mainly composed of silicon dioxide, including but not limited to other auxiliary components such as sodium oxide, calcium oxide, and magnesium oxide. These materials are melted at high temperature and then cooled to form a base glass plate. During the chemical tempering process, the glass is immersed in a solution containing special chemicals. The most common chemical bath solution is a solution containing potassium ions (K + ), such as potassium nitrate (KNO 3 ) or potassium hydroxide (KOH). Potassium ions displace sodium ions (Na + ) on the glass surface through an ion exchange process, thereby forming a potassium-rich compression layer on the glass surface. The radius of potassium ions is larger than that of sodium ions, and this ion exchange causes the surface layer to expand, forming compressive stress, thereby improving the compressive strength and impact resistance of the glass.

[0080] Physically strengthened tempered glass, also known as quenched tempered glass, mainly involves physical treatment of the base glass material in its manufacturing process, without involving the ion exchange process of chemical agents. The base material of physically tempered and strengthened glass is similar to that of most ordinary glass, mainly composed of silicon dioxide, alkali metal oxides (such as sodium oxide, potassium oxide), alkaline earth metal oxides (such as calcium oxide, magnesium oxide), and other compound raw materials (such as aluminum oxide, zinc oxide, etc.).

[0081] The process of physical tempering is to first heat the base glass material in a heating furnace to near its softening point (about 600 °C), and then quickly transfer it to a cooling device, where high-pressure cold air is used to uniformly and rapidly cool both sides of the glass. This rapid cooling process (quenching) causes the glass surface to rapidly contract and form a compressive stress layer, while the interior remains under a relatively large tensile stress. The resulting stress difference significantly increases the flexural strength and impact resistance of the glass. At the same time, when the glass breaks, it forms small granular pieces instead of sharp fragments, enhancing safety.

[0082] The base materials of physically tempered glass and physically strengthened tempered glass are similar to those of most ordinary glass, mainly consisting of silicon dioxide, alkali metal oxides (such as sodium oxide, potassium oxide), alkaline earth metal oxides (such as calcium oxide, magnesium oxide), and other compounding raw materials (such as aluminum oxide, zinc oxide, etc.).

[0083] It can be understood that the mechanical properties of chemically tempered glass are greater than those of physically strengthened tempered glass, and the mechanical properties of physically strengthened tempered glass are greater than those of physically tempered glass. Additionally, chemically tempered glass also has good corrosion resistance.

[0084] In this embodiment, the end plate 110 is made of chemically tempered glass. Since chemically tempered glass has good mechanical properties, it is possible to select chemically tempered glass with a relatively small thickness dimension while meeting the mechanical strength requirements, thereby reducing the weight of the photovoltaic module 1 and facilitating the installation of the photovoltaic module 1 in scenarios with high weight requirements. In this embodiment, the thickness of the end plate 110 is less than 2 mm. For example, the thickness of the end plate 110 is 1.9 mm, 1.8 mm, 1.7 mm, 1.6 mm... or 1 mm. Of course, in some other embodiments, the thickness of the end plate 110 can also be 2 mm, 2.1 mm, 2.2 mm, 2.3 mm, 2.4 mm, or 2.5 mm.

[0085] Optionally, the end plate 110 is made of acrylic material, or the end plate 110 is made of a tetrafluoroethylene copolymer material.

[0086] It can be understood that acrylic has good transparency, light weight, heat resistance, weather resistance, and chemical resistance, and the tetrafluoroethylene copolymer also has good transparency, light weight, heat resistance, weather resistance, and chemical resistance. Therefore, the end plate 110 made of acrylic material or tetrafluoroethylene copolymer also exhibits good transparency, light weight, heat resistance, weather resistance, and chemical resistance.

[0087] Please refer to Figure 2 、 Figure 3 and Figure 6, the embodiment of the present utility model further provides a photovoltaic module 1, which includes a laminated structure formed by the above-mentioned panel 130, second encapsulant film 170, battery layer 120, first encapsulant film 140, and end plate 110. It should be noted that this laminated structure is laminated to form the laminate 100 in this embodiment.

[0088] The photovoltaic module 1 further includes a frame 150 and a sealant 160. The laminated structure is laminated to form the laminate 100, and a sealant 160 is provided between the laminate 100 and the frame 150. That is to say, a sealant 160 is provided between the laminate 100 and the frame 150. A double water-blocking structure is formed between the sealant 160 and the frame 150 to provide good water-blocking protection for the laminate 100.

[0089] The frame 150 covers the panel 130, and the frame 150 is adhesively bonded to the outer wall of the panel 130 through the sealant 160.

[0090] Specifically, the frame 150 includes a surrounding plate 153, a first side plate 151, and a second side plate 152. The surrounding plate 153, the first side plate 151, and the second side plate 152 together form an installation groove, and a sealant 160 is provided in the installation groove. The end plate 110, the battery layer 120, and the panel 130 are all located in the installation groove. The outer peripheral wall of the end plate 110, the outer peripheral wall of the battery layer 120, and the covering portion 132 are opposite to the surrounding plate 153 and adhesively bonded to the sealant 160, and the fitting portion 131 is opposite to the first side plate 151 and adhesively bonded to the sealant 160.

[0091] When the panel 130 is an integral structure and the end of the covering portion 132 away from the fitting portion 131 has a folding edge 133 opposite to the fitting portion 131, the surrounding plate 153 is opposite to the covering portion 132 and adhesively bonded to the covering portion 132 through the sealant 160, and the second side plate 152 is opposite to the folding edge 133 and adhesively bonded to the folding edge 133 through the sealant 160. When the covering portion 132 does not have a folding edge 133, the second side plate 152 is opposite to the end plate 110 and adhesively bonded to the end plate 110 through the sealant 160.

[0092] Of course, the above-mentioned frame 150 can be an integral frame 150 or a split frame 150. For the convenience of disassembly and assembly, the frame 150 of the photovoltaic module 1 can be a split and detachable frame 150. For ensuring the assembly strength, the frame 150 can be an integral frame 150.

[0093] In some alternative embodiments, the frame 150 may also only include the surrounding plate 153 and the first side plate 151. That is to say, the frame 150 does not include the second side plate 152. That is, the frame 150 is only hermetically adhesively bonded to the fitting portion 131 through the first end, and is only hermetically adhesively bonded to the covering portion 132 through the first side plate 151.

[0094] Optionally, the material of the frame 150 is steel, aluminum, or composite material. That is to say, the frame 150 can be made of composite material, the frame 150 can also be made of aluminum, and the frame 150 can also be made of steel. In this embodiment, the frame 150 is made of composite material. It can be understood that the polymer composite material has good strength, chemical resistance, and weather resistance, and has the characteristic of being lightweight compared to metal, which is convenient for the photovoltaic module 1 to be installed in scenarios with high weight requirements. And the polymer composite material has a certain deformation ability. When the integrated laminate 100 formed by the end plate 110, the battery layer 120, and the panel 130 deforms, the frame 150 can deform accordingly, so that the problem of component explosion is not likely to occur.

[0095] Optionally, the composite material can be polyurethane or fiberglass. Of course, the composite material can also be other materials.

[0096] In summary, the embodiment of the present utility model provides a panel 130 for a photovoltaic module and a photovoltaic module 1. The photovoltaic module 1 includes a panel 130. The panel 130 includes a bonding portion 131 and a covering portion 132. The bonding portion 131 is used for bonding the adhesive film of the laminate 100. The covering portion 132 is connected to at least one side of the bonding portion 131. The covering portion 132 is used for covering and bonding the corresponding outer peripheral wall of the laminate 100. The covering portion 132 can prevent external moisture from infiltrating into the battery layer 120 from the outer peripheral wall of the laminate 100, so as to improve the waterproof effect of the photovoltaic module 1. The covering portion 132 made of a flexible material can improve the fitting tightness between the covering portion 132 and the outer peripheral wall of the laminate 100, avoid the failure of the photovoltaic module 1, and ensure the waterproof ability of the photovoltaic module 1.

[0097] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A panel for a photovoltaic module, characterized in that: The panel comprises: A bonding portion, the bonding portion being used for bonding with the adhesive film of the laminate; A covering portion, the covering portion being arranged on at least one side of the bonding portion, and the covering portion being used for covering and bonding with the outer peripheral wall corresponding to the laminate; Wherein, the covering portion is made of a flexible material.

2. The panel for photovoltaic modules according to claim 1, characterized in that: One end of the covering portion away from the bonding portion can extend toward a side of the laminate away from the bonding portion to form a folded edge, and the folded edge is used to cover the edge of the side of the laminate away from the bonding portion.

3. The panel for photovoltaic modules according to claim 1, characterized in that: The bonding part is provided with covering parts around the bonding part, and the covering parts around the bonding part are used for covering and bonding the outer peripheral wall of the laminate.

4. The panel for photovoltaic modules according to claim 2, characterized in that: The covering portion can be bonded to the outer peripheral wall of the laminate by means of water-blocking adhesive, and the folded edge can be bonded to a side of the laminate away from the bonding portion by means of water-blocking adhesive.

5. The panel for photovoltaic modules according to any one of claims 1 to 4, characterized in that: The panel is the back sheet or the front sheet of the laminate.

6. The panel for photovoltaic modules according to claim 5, characterized in that: The panel is an integrated structure.

7. The panel for photovoltaic modules according to claim 6, characterized in that: When the panel is the back panel of the laminate, the panel includes a first weather-resistant layer and a first water-blocking layer stacked together; or the panel includes a first weather-resistant layer, a first reinforcement layer and a first water-blocking layer stacked together, and both sides of the first reinforcement layer are respectively bonded to the first water-blocking layer and the first weather-resistant layer.

8. The panel for photovoltaic modules according to claim 7, characterized in that: The first weather-resistant layer is made of at least one of polyvinylidene fluoride, polyvinyl fluoride, and polyester, and / or the first water-blocking layer is made of at least one of polyvinylidene fluoride, polyvinyl fluoride, polyester, polyethylene or polypropylene, and / or the first reinforcement layer is made of polyester.

9. The panel for photovoltaic modules according to claim 6, characterized in that: When the panel is the front sheet of the laminate, the panel is made of a transparent material; The panel includes a second water-blocking layer and a second reinforcing layer which are stacked, or the panel includes a second weather-resistant layer, a second reinforcing layer and a second water-blocking layer which are stacked.

10. The panel for photovoltaic modules according to claim 9, characterized in that: The second water-blocking layer is made of at least one material selected from ethylene-tetrafluoroethylene copolymer, acrylic polymer, and glass fiber, and / or the second reinforcing layer is made of glass fiber, and / or the second weather-resistant layer is made of at least one material selected from fluorine and polyester.

11. A photovoltaic module, characterized in that: A laminated structure comprising the panel according to any one of claims 1 to 10, a second adhesive film, a battery layer, a first adhesive film, and an end plate.

12. The photovoltaic module according to claim 11, characterized in that: The photovoltaic assembly further includes a frame and a sealant. The stacked structure is laminated to form a laminate, and the sealant is arranged between the laminate and the frame.

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