Photovoltaic tile, positioning piece and packaging method of photovoltaic tile

Abstract

The invention discloses a photovoltaic tile, a positioning piece and a packaging method of the photovoltaic tile, and the photovoltaic tile comprises a packaging plate which comprises a first packaging plate and a second packaging plate; the through hole penetrates through the packaging plate and the adhesive film layer, so that a first mounting hole is formed in the first packaging plate, a second mounting hole is formed in the second packaging plate, and a third mounting hole is formed in the adhesive film layer; the adhesive film layer comprises a first connecting layer and a second connecting layer; the first connecting layer is arranged between the first packaging plate and the second packaging plate, and the second connecting layer covers the inner wall of the through hole; and the battery layer is packaged between the first packaging plate and the second packaging plate. The photovoltaic tile disclosed by the invention is matched with the positioning piece with the improved structure, so that the convenience and the yield of the photovoltaic tile structure during packaging can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of photovoltaic tiles, in particular to a photovoltaic tile, a positioning member and a packaging method of the photovoltaic tile. Background Art

[0002] When installing the photovoltaic tiles, mounting holes for installing the photovoltaic tiles will be designed. Therefore, the glass in each layer of the structure is perforated glass, and the adhesive film also needs to be cut with circular holes. During the laying process of each layer of the structure, the holes of the upper and lower glass and the adhesive film need to be aligned, and a cylindrical positioning device needs to be set at the mounting hole to prevent the layers of the structure from being misaligned during lamination, thereby affecting the installation.

[0003] However, in the prior art, when photovoltaic tiles are packaged in this way, the alignment operation between the various structures is complicated and time-consuming, and the positioning device will adhere to the adhesive film after lamination, making it difficult to remove. At the same time, since the lamination process will heat up, the positioning device is mostly made of high-temperature resistant materials. In order to remove the positioning device, the conventional practice is to drill holes at the installation holes with an electric drill-type punch. The drill bit is made of metal material. Once the drill bit touches the glass during drilling, it is easy to cause the glass to burst after being locally stressed, which is not conducive to the mass production of photovoltaic tiles. Summary of the invention

[0004] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is how to improve the convenience of packaging the photovoltaic tile structure and removing the positioning module.

[0005] In order to solve at least one of the above-mentioned technical problems, the present invention discloses a photovoltaic tile, a positioning member and a packaging method of the photovoltaic tile.

[0006] According to one aspect of the present disclosure, there is provided a photovoltaic tile, comprising:

[0007] A packaging board, comprising a first packaging board and a second packaging board;

[0008] An adhesive film layer, the adhesive film layer comprising a first connection layer and a second connection layer; the first connection layer is disposed between the first packaging board and the second packaging board;

[0009] A through hole, which penetrates the packaging board and the first connection layer, so that a first mounting hole is opened in the first packaging board, a second mounting hole is opened in the second packaging board, and a third mounting hole is opened in the first connection layer; in the adhesive film layer, the second connection layer covers the inner wall of the through hole;

[0010] The battery layer is packaged between the first packaging board and the second packaging board.

[0011] In some possible embodiments, the first connecting layer and the second connecting layer are an integrated structure;

[0012] The second connection layer forms a through sleeve inside the through hole.

[0013] In some possible embodiments, in the adhesive film layer, at least a portion of the first connection layer is disposed between the first packaging plate and the battery layer;

[0014] And / or, at least a portion of the first connection layer is disposed between the second packaging plate and the battery layer.

[0015] In a possible embodiment, the material of the adhesive film layer is one of ethylene-vinyl acetate copolymer and polyvinyl butyral;

[0016] And / or, the thickness of the second connecting layer is in the range of 0.1 mm to 5 mm.

[0017] According to a second aspect of the present disclosure, there is provided a positioning member applied to the photovoltaic tile as described in any one of the above embodiments, the positioning member comprising a positioning portion;

[0018] The height of the positioning member is not less than the depth of the through hole; the size of the horizontal cross section of the positioning member and the size of the horizontal cross section of the through hole satisfy:

[0019] When the positioning member is placed in the through hole, the spacing between the outer wall of the positioning member and the inner wall of the through hole is in the range of 0.1 mm to 5 mm.

[0020] In some possible embodiments, the positioning portion is columnar in shape, and the positioning member further includes a supporting portion disposed on an outer side wall of the positioning portion, wherein the supporting portion is a plurality of protrusions on the outer side wall of the positioning portion.

[0021] In some possible embodiments, the positioning portion and the supporting portion are integrally formed into a columnar structure, and a horizontal cross section of the positioning member includes a first width and a second width in a horizontal direction;

[0022] The first width is the diameter of the columnar positioning portion, and the second width is the sum of the first width and the width of one or two of the supporting portions along the radial direction of the positioning portion.

[0023] In some possible embodiments, the positioning element further includes an anti-sticking layer covering the outer surface.

[0024] In some possible embodiments, the positioning portion and the supporting portion are an integrated structure, and the materials of the positioning portion and the supporting portion are both engineering plastics.

[0025] According to a third aspect of the present disclosure, a method for packaging a photovoltaic tile is disclosed, which is applied to any of the photovoltaic tiles described above, and the method comprises:

[0026] Placing a first packaging board, a film layer to be laminated, a battery layer, and a second packaging board, so that the first mounting hole of the first packaging board and the second mounting hole of the second packaging board are aligned, the first packaging board and the second packaging board are arranged on both sides of the film layer to be laminated, and the film layer to be laminated blocks the first mounting hole and the second mounting hole;

[0027] Placing a positioning member inside a second mounting hole in the second packaging board so that a first distance is formed between an outer wall of the positioning member and an inner wall of the second mounting hole, and a second surface of the positioning member contacts the adhesive film layer to be laminated;

[0028] The positioning member is hot pressed so that the adhesive film layer to be laminated at the bottom of the second mounting hole forms the second connection layer covering the inner wall of the through hole under the pressure of the positioning member.

[0029] In some possible embodiments, the hot pressing the positioning member includes:

[0030] The adhesive film layer to be laminated at the bottom of the second mounting hole is subjected to a heating treatment until the temperature reaches a target temperature; the target temperature ranges from 110° C. to 160° C., and the heating treatment time ranges from 4 min to 40 min;

[0031] The positioning member is subjected to a pressurizing treatment so that the external pressure is transmitted to the adhesive film layer to be laminated at the bottom of the second mounting hole through the positioning member.

[0032] In some possible embodiments, after placing the positioning member inside the second through hole in the second packaging board, the method includes:

[0033] The first surface of the positioning member is covered with a fixing tape.

[0034] In some possible embodiments, after forming the second connection layer inside the through hole, the method includes:

[0035] The positioning piece is taken out from the through hole to obtain the photovoltaic tile.

[0036] The implementation of the present invention has the following beneficial effects:

[0037] In the present invention, each structure of the photovoltaic tile includes a packaging plate, a film layer and a photovoltaic cell; wherein the packaging plate includes a first packaging plate and a second packaging plate which are respectively arranged on the upper and lower surfaces of the film layer, and are laid in an aligned manner according to the sizes of the packaging plate and the film layer during the laying process, so that the mounting holes on the packaging plate are aligned to form through holes, thereby improving the convenience of the photovoltaic tile during installation and reducing the difficulties caused by the misalignment of the structures of each layer in the photovoltaic tile installation process; in addition, the second connecting layer in the film layer covers the inner wall of the through hole, which can improve the sealing of the packaging at the mounting hole; as for the second connecting layer, it can be obtained by hot pressing the film, so that the film layer does not need additional holes to be opened, which helps to streamline the process and avoids the production of film scraps by opening the holes, thereby improving the utilization rate of the film; the second connecting layer can be used as an installation sleeve during installation, and there is no need to set up an additional installation sleeve, which helps to further streamline the process, reduce costs, and avoid the problem of loosening and falling off of the non-integrated sleeve, thereby improving the safety of the photovoltaic tile during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0039] Figure 1 A structural side view of a photovoltaic tile before lamination provided by an embodiment of the present invention;

[0040] Figure 2 A top view of the structure of a photovoltaic tile before lamination provided by an embodiment of the present invention;

[0041] Figure 3 A top view of a structure corresponding to a positioning member provided in an embodiment of the present invention;

[0042] Figure 4 A schematic diagram of a process flow corresponding to a method for packaging photovoltaic tiles provided in an embodiment of the present invention;

[0043] Figure 5 A side view of the structure of a photovoltaic tile after lamination provided by an embodiment of the present invention;

[0044] Figure 6 A schematic diagram of a process flow corresponding to the processing of the structure to be packaged provided in an embodiment of the present invention;

[0045] Figure 7 A side view of the structure corresponding to the photovoltaic tile after the positioning member is removed provided in an embodiment of the present invention.

[0046] Among them, the figure marks may include: 100-packaging board, 110-first packaging board, 111-first mounting hole, 120-second packaging board, 121-second mounting hole, 130-through hole, 200-film layer, 210-first connecting layer, 220-second connecting layer, 230-third mounting hole, 300-positioning piece, 310-positioning part, 320-supporting part, 330-anti-stick coating, 400-battery layer, 500-fixing tape, d-first width, l-second width, h-positioning piece height, H-photovoltaic tile height. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of this specification to clearly and completely describe the technical solutions in the embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this specification, not all of the embodiments. Based on the embodiments in this specification, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product, or server that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products, or devices.

[0049] Various exemplary embodiments, features and aspects of the present disclosure will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise specified.

[0050] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0051] The term "and / or" herein is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the term "at least one" herein represents any combination of at least two of any one or more of a plurality of. For example, including at least one of A, B, and C can represent including any one or more elements selected from the set consisting of A, B, and C.

[0052] In addition, in order to better illustrate the present disclosure, numerous specific details are given in the following specific embodiments. It should be understood by those skilled in the art that the present disclosure can also be implemented without certain specific details. In some examples, methods, means, components and circuits well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present disclosure.

[0053] Figure 1 A side view of the structure of a photovoltaic tile before lamination provided by an embodiment of the present invention, Figure 2 A top view of the structure of a photovoltaic tile before lamination provided by an embodiment of the present invention; Figure 7 The side view of the structure of the photovoltaic tile after the positioning parts are removed provided in the embodiment of the present invention, that is, the side view of the structure of the finished photovoltaic tile after lamination; it should be noted that any rectangular frame in the drawings of the specification does not represent the actual shape, actual position and actual size of the corresponding structure, but is only used as an example of a preferred technical solution. The specific position, size and shape of the structure corresponding to the rectangular frame need to be determined in combination with the drawings and the description. Figure 1-2 as well as Figure 7 As shown, before the photovoltaic tile is laminated and packaged, the structure includes:

[0054] The packaging board 100 includes a first packaging board 110 and a second packaging board 120;

[0055] The adhesive film layer 200 includes a first connection layer 210 and a second connection layer 220 ; the first connection layer 210 is disposed between the first packaging board 110 and the second packaging board 120 ;

[0056] The through hole 130 penetrates the package board 100 and the first connection layer 210, so that the first mounting hole 111 is opened in the first package board 110, the second mounting hole 121 is opened in the second package board 120, and the third mounting hole is opened in the first connection layer 210; in the adhesive film layer 200, the second connection layer covers the inner wall of the through hole 130;

[0057] The first connection layer 210 and the second connection layer 220 are an integrated structure; the second connection layer 220 forms a through sleeve inside the through hole 130;

[0058] The battery layer 400 is packaged between the first packaging board 110 and the second packaging board 120; in the adhesive film layer, at least a portion of the first connection layer is disposed between the first packaging board and the battery layer;

[0059] And / or, at least a portion of the first connection layer 210 is disposed between the second packaging plate 120 and the battery layer 400 .

[0060] like Figure 7 As shown, for a finished photovoltaic tile, its main structure may include a packaging plate 100, a through hole 130, a film layer 200 and a battery layer 400.

[0061] The material of the packaging board 100 can be glass, i.e. a glass board, or other packaging materials, such as organic packaging materials, wherein transparent organic materials are preferably used. The packaging board 100 may include a two-layer structure, i.e. a first packaging board 110 and a second packaging board 120, wherein the first packaging board 110 is any layer of the packaging board 100, and the second packaging board 120 is also any layer of the packaging board 100. Figure 1-2 and Figure 7 In the invention, the first packaging board 110 is set as a layer below the adhesive film layer 200, and the second packaging board 120 is set as a layer above the adhesive film layer 200; a through hole 130 is set through the packaging board 100, and it can be considered that the through hole 130 includes a first mounting hole 111, a second mounting hole 121, and a gap formed between the first mounting hole 111 and the second mounting hole 121. The first mounting hole 111 penetrates the first packaging board 110, and the second mounting hole 121 penetrates the second packaging board 120; in order to facilitate the packaging of the photovoltaic tile structure and the subsequent installation of the photovoltaic tiles, the first mounting hole 111 and the second mounting hole 121 have the same size and shape, and the mounting hole can be set as a circular hole, and the diameter of the circular hole can be 4 to 30 mm. In addition to the circular hole, it can also be adaptively designed as an elliptical hole, a square hole, a triangular hole, a polygonal hole, etc.; the thickness of the adhesive film needs to be designed according to the thickness of the glass and the size of the photovoltaic tile, and the thickness is usually 0.4 to 2 mm. In the present invention, it is preferred to set the through hole as a circular hole. The through hole is Figure 1 The position marked by the dotted box.

[0062] It should be noted that for the sake of convenience, Figure 1 The adhesive layer in is also marked as 200, but it is actually the adhesive film layer before lamination, that is, the adhesive film layer to be laminated.

[0063] The adhesive film layer 200 includes a first connection layer 210 and a second connection layer 220, and at least a portion of the adhesive film layer 200, such as the first connection layer 210, is provided with a matching third mounting hole 230 at a position corresponding to the first mounting hole 111 and the second mounting hole 121; the first connection layer 210 is placed between the first packaging board 110 and the second packaging board 120, and the position of the second connection layer 220 can refer to Figure 7 As shown in , the second connection layer 220 is formed after the first connection layer 210 is extruded, and is disposed on the inner side wall of the through hole 130 , and is an integrated structure with the extruded first connection layer 210 .

[0064] The material of the first connecting layer 210 can be EVA (ethylene-vinyl acetate copolymer) film, POE film, PVB film (polyvinyl butyral), etc. By setting the first connecting layer 210, the first packaging board 110 and the second packaging board 120 are firmly bonded together to form an integral structure, thereby ensuring the stability and reliability of the photovoltaic tiles in harsh outdoor environments.

[0065] Regarding the battery layer 400, the present invention does not limit the specific location of the battery layer 400 and the first connection layer 210, which can be as follows: Figure 1 Embedded inside the first connection layer 210, that is, at least a portion of the first connection layer 210 is disposed between the first package board 110 and the battery layer 400, and at least a portion of the first connection layer 210 is disposed between the second package board 120 and the battery layer 400; the battery layer 400 may also be directly in contact with the first package board 110 or the second package board 120, which may be described as a battery layer 400 disposed on the first package board 110, a first connection layer 210 disposed on the battery layer 400, and a first connection layer 210 disposed on the second package board 120. The adhesive film layer 200 can effectively prevent moisture, oxygen and other harmful substances from invading the interior of the photovoltaic tile, thereby protecting the battery layer 400 from corrosion and damage. The battery layer 400 is a photovoltaic cell, which may be a perovskite cell, a cadmium telluride cell, a silicon cell, a gallium arsenide cell, a copper indium gallium selenide cell, etc., and may be a single junction cell or a stacked cell.

[0066] Furthermore, the present invention also discloses a positioning member 300 as a special tooling for assisting the packaging of the above photovoltaic tiles. The size of the positioning member 300 is slightly smaller than the through hole, so that when the positioning member is placed in the through hole, there is a gap of appropriate size between the outer wall of the positioning member and the inner wall of the through hole. During the packaging process of the photovoltaic tiles, the adhesive film layer to be laminated is squeezed by the positioning member 300 and deformed to form a through sleeve on the inner wall of the through hole 130.

[0067] Figure 3A top view of a structure corresponding to a positioning member provided in an embodiment of the present invention, combined with Figure 3 as well as Figure 1-2 As shown, specifically, the positioning member 300 has the following structure:

[0068] The positioning member 300 includes a positioning portion 310, which is cylindrical in shape, and may also include a supporting portion 320 disposed on the outer wall of the positioning portion 310. The supporting portion 320 is a plurality of protrusions on the outer wall of the cylindrical positioning portion 310, and the presence of the protrusions can facilitate the removal of the positioning member 300 after the photovoltaic tile packaging is completed.

[0069] The height of the positioning member 300 is not less than the depth of the through hole 130; the size of the horizontal cross section of the positioning member 300 and the size of the horizontal cross section of the through hole 130 satisfy:

[0070] When the positioning member 300 is placed in the through hole 130, the spacing between the outer wall of the positioning member 300 and the inner wall of the through hole 130 ranges from 0.1mm to 5mm, that is, there is a gap of 0.1mm to 5mm between the outer wall of the positioning member 300 and the inner wall of the through hole 130. For example, according to different design requirements, the gap between the outer wall of the positioning member 300 and the inner wall 130 of the through hole can be set to 0.1mm, 0.5mm, 1mm, 2mm, 3mm, 4mm or 5mm. It can be understood that the smaller the value of the gap is, the less likely the position of the positioning member 300 is to be offset, the more fully the first connection layer 210 is extruded, and the thinner the second connection layer formed after the first connection layer 210 is extruded. The present invention is not limited to this, and relative adaptive adjustments can be made according to specific needs within the spacing range.

[0071] Specifically, the dimensions of the positioning member 300 in the horizontal direction are described as follows:

[0072] The positioning portion 310 and the supporting portion 320 are generally columnar in shape, and the horizontal cross section of the positioning member 300 includes a first width and a second width in the horizontal direction;

[0073] The first width is the diameter of the columnar positioning portion 310 , and the second width is the sum of the first width and the width of one or two supporting portions 320 along the radial direction of the positioning portion 310 .

[0074] In a specific embodiment, the positioning member 300 structure may include a positioning portion 310 and a supporting portion 320, wherein the shape of the positioning portion 310 is not limited by the present invention, and may be, for example, a cylinder. The number of the supporting portions 320 may be one or more, for example, two, three, four, or five. The shape of the supporting portion 320 is still not limited, Figure 1The middle support portion 320 is the same height as the positioning portion 310, but is an irregular column with a maximum cross-sectional dimension smaller than the bottom diameter of the positioning portion 310. The positioning portion and the support portion are generally in a columnar structure as a whole, which is convenient for inserting into or removing from the through hole. As for the position setting of the support portion 320, the support portion 320 can be evenly arranged on the outer side wall of the positioning portion 310 and connected to the outer side wall of the positioning portion 310. The connection method is a fixed connection, that is, the positioning portion 310 and the plurality of support portions 320 are arranged as an integrally formed structure. In the attached figure, the four support portions 320 are respectively arranged at the four intersections of two mutually perpendicular diameters and the bottom surface of the positioning portion 310.

[0075] The size of the positioning member 300 is described from two perspectives: height and width. First, the width. Since the positioning member 300 in the present invention is composed of a positioning portion 310 and a cylindrical support portion 320, the first width can be the diameter of the positioning portion 310, that is, Figure 3 The second width can be considered as the overall width of the positioning member 300, which may include the first width plus the width of the support portion 320 in the horizontal direction, such as Figure 3 The second width may be the diameter of the positioning portion 310 and the width of the two supporting portions 320 along the radial direction of the positioning portion 310 .

[0076] Specifically, in order to facilitate the removal of the positioning member 300 from the through hole, it can be understood that the size of its horizontal cross section is smaller than the width of the through hole 130. The width of the through hole 130 is the diameter D. For example, it can be described as that after the positioning member 300 is placed in the through hole 130, the through hole 130 and the outer wall of the positioning member 300 form a gap with a certain spacing; in the specific calculation process, the adjustment parameters can be set to determine the size of the positioning member 300. For example, the first adjustment parameter A can be set to determine the first width d, d=DA, and the second adjustment parameter B can be set to determine the second width l, l=DB. Preferably, the range of A is 0.4mm~5mm, and the range of B is 0.1mm~5mm.

[0077] The height h of the positioning member 300 can be limited in combination with the photovoltaic tile height H and the third adjustment parameter C; specifically, the photovoltaic tile height H can be the sum of the height of the first packaging board 110, the height of the second packaging board 120 and the height of the film layer 200, then the corresponding height of the positioning member 300 is h=H+C, and the preferred range of C is 0 to 2 mm.

[0078] In addition, the shape and size of the positioning member 300 can be adaptively adjusted according to the shape of the through hole 130; the size and shape disclosed in the present invention can be used as a preferred solution, but not the only solution.

[0079] The positioning member 300 and the supporting part are an integrated structure, and the materials of the positioning member and the supporting part are both engineering plastics; the outer surface of the positioning member is covered with an anti-stick coating 330.

[0080] Specifically, the material of the positioning piece 300 can be selected from high temperature resistant engineering plastics, such as polyether ketone, high temperature nylon, polyimide and other materials, to ensure the high temperature resistance of the positioning piece 300, so that the positioning piece 300 will not be affected by high temperature and melted or deformed during the packaging process of the photovoltaic tiles.

[0081] In addition, the outer surface of the positioning member 300 is covered with an anti-stick coating 330, and the anti-stick coating 330 is Figure 1 As shown in the purple part, the anti-stick coating 330 can be made of composite ceramic coating, Teflon coating and other materials; although the specific shape of the anti-stick coating 330 is not shown in the figure, it can be understood that the shape of the anti-stick coating 330 should be consistent with the positioning member 300 in order to completely cover the outer surface of the positioning member 300. The anti-stick coating 330 can prevent the positioning member 300 from being bonded to the adhesive film after lamination during the packaging process of the photovoltaic tile, making it difficult to remove; the anti-stick coating 330 is arranged on the outer surface of the positioning member 300, and the first connecting layer 210 cannot directly contact the cylindrical positioning portion 310, but contacts the anti-stick coating 330, and the anti-stick coating 330 and the first connecting layer 210 can hardly form adhesion, so that the positioning member 300 can be easily removed from the through hole after lamination, which improves the convenience of removing the positioning member 300 and avoids the risk of rupture caused by opening a hole in the packaging board 100 to remove the positioning member 300.

[0082] In addition, instead of providing a coating made of anti-sticking material on the outer surface of the positioning member 300 , the outer surface of the positioning member 300 may be covered with an anti-sticking cloth to form an anti-sticking layer to prevent adhesion between the adhesive film and the positioning member 300 .

[0083] In another specific embodiment, the positioning member 300 has a first surface and a second surface which are opposite to each other in the thickness direction; the first surface is used for bonding and fixing the adhesive tape 500 , and the second surface is used for contacting the adhesive film layer 200 .

[0084] Before the photovoltaic tile is packaged, the positioning member 300 is placed inside the through hole 130 , and the fixing tape 500 is adhered to the first surface, and the second surface is in contact with the first connection layer 210 .

[0085] Specifically, the outer surface of the positioning member 300 has a first surface and a second surface opposite to each other in the direction of the component height h or the photovoltaic tile height H; for the positioning portion 310, the first surface and the second surface are its bottom surface; for the positioning member 300, the surface in contact with the first connection layer 210 can be considered as the first surface, and the surface opposite to the first surface can be considered as the second surface, or the surface in contact with the first connection layer 210 can be considered as the second surface, and the surface opposite to the second surface can be considered as the first surface. In this embodiment, the surface in contact with the first connection layer 210 is considered as the second surface.

[0086] like Figure 1-2 Before the photovoltaic tile structure is packaged, the first packaging board 110, the adhesive film layer 200, the battery layer 400 and the second packaging board 120 can be laid in order, and the positioning member 300 can be placed inside the second mounting hole 121 so that the second surface of the positioning member 300 is in contact with the first connection layer 210; in addition, a fixing tape 500 can be attached to the first surface of the positioning member 300, and the fixing tape 500 can be a non-residual and high-temperature resistant tape, so that after lamination, when the fixing tape 500 is removed from the first surface, no adhesive residue is left on the packaging board 100 and the positioning member 300. The setting of the fixing tape 500 can prevent the positioning member 300 from moving away from the original position during the packaging process, and after lamination, the fixing tape 500 can completely cover the second mounting hole 121 to prevent the adhesive film layer 200 from seeping from the gap between the positioning member 300 and the second mounting hole 121 to the surface of the second packaging board 120, and contaminating the silicone plate of the laminator.

[0087] In addition, in addition to the packaging board 100 and the adhesive film layer 200, the photovoltaic tile may also include a molding adhesive layer, a texture template and other structures sequentially laid on the second packaging board 120 according to specific design and application requirements.

[0088] The following describes a packaging method applicable to the photovoltaic tiles described above.

[0089] Figure 4 A schematic diagram of a process flow corresponding to a photovoltaic tile packaging method provided by an embodiment of the present invention; the photovoltaic tile packaging method can be implemented by a laminator; specifically, Figure 4 As shown, a method for packaging a photovoltaic tile comprises:

[0090] Step S401: Place the first packaging board, the adhesive film layer to be laminated, the battery layer and the second packaging board, so that the first mounting hole of the first packaging board and the second mounting hole of the second packaging board are aligned, the first packaging board and the second packaging board are arranged on both sides of the adhesive film layer to be laminated, and the adhesive film layer to be laminated blocks the first mounting hole and the second mounting hole.

[0091] In a specific embodiment, the first packaging board, the adhesive film layer to be laminated, the battery layer and the second packaging board can be arranged in sequence. Figure 1 The order of laying is shown. Since the outer edge dimensions of the first package board, the adhesive film layer and the second package board are the same, the edges of the first package board, the adhesive film layer and the second package board can be aligned after laying. And since the position setting, shape setting and size setting of the first mounting hole and the second mounting hole are the same, the mounting holes can be aligned after the edges are aligned, so that the multiple mounting holes are regarded as a through hole as a whole after alignment. Among them, the adhesive film layer to be laminated can represent the first connection layer without the third mounting hole before lamination. The existing technology can be used for lamination to open the third mounting hole on the first connection layer, and the present invention will not elaborate on this. In addition, there is no limitation on the position setting and laying order of the battery layer, and it can be adaptively adjusted according to the specific application.

[0092] Step S402: placing a positioning member inside the second mounting hole in the second packaging board, so that a first distance is formed between the outer wall of the positioning member and the inner wall of the second mounting hole, and the second surface of the positioning member contacts the adhesive film layer to be laminated.

[0093] In a specific embodiment, after aligning and laying the first packaging board, the adhesive film layer to be laminated and the second packaging board, the second surface of the positioning member is placed inside the mounting hole corresponding to the upper packaging board, that is, inside the second mounting hole corresponding to the second packaging board, and a first spacing ranging from 0.1 mm to 5 mm is formed between the outer wall of the positioning portion and the inside of the second mounting hole. Since the adhesive film layer to be laminated is arranged between the two packaging boards, after the positioning member is placed in the through hole, the adhesive film and the positioning member can be in contact.

[0094] Step S403: hot pressing the positioning member so that the adhesive film layer to be laminated at the bottom of the second mounting hole is pressed by the positioning member to form the second connection layer covering the inner wall of the through hole.

[0095] In a specific embodiment, a laminator can be used to encapsulate the photovoltaic tile, or a combination of an autoclave and a vacuum bag can be used to encapsulate the structure to be encapsulated to obtain the photovoltaic tile. The present invention preferably uses a laminator to encapsulate the photovoltaic tile; specifically, Figure 5 A side view of the structure of a photovoltaic tile after lamination provided by an embodiment of the present invention; Figure 5 In order to conveniently indicate the position of the second connection layer in the structure, the first mounting hole, the second mounting hole and the third mounting hole are not marked in the figure. Figure 1 Determine the positions of the first mounting hole, the second mounting hole, and the third mounting hole; Figure 5After being sent into the laminator, the positioning piece can penetrate the adhesive film layer to be laminated (i.e., the first connecting layer before lamination) in the direction close to the first packaging board under the action of the laminator, so that the adhesive film layer to be laminated is deformed and squeezed into the gap corresponding to the first spacing, thereby forming a second connecting layer inside the through hole. The second connecting layer and the first connecting layer form an integrated structure. The second connecting layer can replace the setting of the through sleeve to play a buffering role.

[0096] Figure 6 A schematic diagram of a process flow corresponding to the processing of the structure to be packaged provided in an embodiment of the present invention; Figure 6 As shown, the hot pressing of the positioning member may include:

[0097] Step S601: heating the adhesive film layer to be laminated at the bottom of the second mounting hole until the temperature reaches a target temperature; the target temperature ranges from 110° C. to 160° C., and the time range of the heating treatment is 4 min to 40 min.

[0098] In a specific embodiment, after inputting into the laminator, the laminator performs two processing stages. The first processing stage performs a heating process and also performs a vacuum process. After the first processing stage is completed, the air inside the structure is discharged and the temperature inside the laminator reaches the target temperature, wherein the target temperature can be the softening point of the film, that is, the temperature at this time can soften the film; the range of the target temperature can be adjusted according to the type and thickness of the film.

[0099] Among them, the processing time and temperature of the first processing stage can be adjusted according to the type of the film layer to be laminated, and the temperature and time can also be adjusted considering the thickness of the film layer to be laminated; for example, for EVA film and POE film, the lamination temperature can be set to 110-160°C, such as 110°C, 115°C, 120°C, 125°C, 130°C, 140°C, 150°C or 160°C; the vacuuming time can be set to 4-10min, such as 4min, 5min, 6min, 7min, 8min, 9min or 10min; for PVB The lamination temperature can be set to 130-160°C, such as 130°C, 135°C, 140°C, 145°C, 150°C or 160°C; the vacuuming time can be set to 5-40min, such as 5min, 10min, 15min, 20min, 30min or 40min; when the lamination temperature is high, the vacuuming time can be reduced accordingly, and when the lamination temperature is low, the vacuuming time can be increased accordingly. The overall principle of adjustment between time and temperature is: when the vacuuming stage is completed, the film temperature needs to reach the film softening point so that the positioning piece can easily penetrate the film.

[0100] Step S602: Pressurizing the positioning member so that the external pressure is transmitted to the adhesive film layer to be laminated at the bottom of the second mounting hole through the positioning member.

[0101] In a specific embodiment, the second processing stage is entered after the above-mentioned first processing stage is executed; the second processing stage performs pressurization processing, and the first surface of the positioning member is subjected to the external pressure generated by the silicone plate of the laminator, and the external pressure is transmitted to the adhesive film layer to be laminated through the positioning member, and the positioning member can penetrate the adhesive film layer to be laminated in the direction close to the first packaging board under the action of the laminator, so that the adhesive film layer to be laminated is deformed and squeezed into the gap formed by the first spacing, thereby forming a second connecting layer inside the through hole to complete the packaging of the photovoltaic tiles.

[0102] Further, after placing the positioning member inside the second through hole in the second packaging board, the method includes:

[0103] The first surface of the positioning member is covered with a fixing tape.

[0104] In a specific embodiment, after the positioning piece is placed, a fixing tape may be attached to the first surface of the positioning piece to further fix the position of the positioning piece so that the positioning piece is placed offset, wherein the first surface of the positioning piece is the side surface away from the film layer.

[0105] Further, after forming the second connection layer inside the through hole, the method includes:

[0106] The positioning piece is taken out from the through hole to obtain the photovoltaic tile.

[0107] In a specific embodiment, after lamination is completed, the packaged photovoltaic tiles are removed from the laminator and begin to cool down. At this time, the adhesive film on the inner wall of the through hole will cool and shrink due to the decrease in temperature. Because the adhesion between the adhesive film and the positioning piece is very weak, the adhesive film will automatically separate from the positioning piece when it cools and shrinks. After cooling, the positioning piece can be easily taken out and reused, thereby improving the convenience of moving and using the positioning piece and avoiding the risk of rupture of the packaging board due to taking out the positioning piece. Figure 7 The side view of the structure of the photovoltaic tile after the positioning member is removed according to the embodiment of the present invention is shown in FIG. Figure 7 As shown, after taking out the positioning piece, the packaged photovoltaic tile is obtained.

[0108] In addition, after lamination, a second connecting layer has been formed by the adhesive film inside the through hole. The second connecting layer can replace the integrated covering sleeve. Therefore, when the photovoltaic tiles are installed, there is no need to set up an additional plastic sleeve, which can reduce the production cost of the photovoltaic tiles and simplify the production process. Since the sleeve is an integrated structure, the sleeve will not loosen or fail, thereby improving the safety and stability of the installation and use of photovoltaic tiles.

[0109] It can be seen from the embodiments provided by the present invention that, in the present invention, each structure of the photovoltaic tile includes a packaging plate, a film layer and a photovoltaic cell; wherein the packaging plate includes a first packaging plate and a second packaging plate respectively arranged on the upper and lower surfaces of the film layer, and the first packaging plate and the second packaging plate are respectively provided with a first through hole and a second through hole of the same size, size, shape and position; the film layer includes a film, and the photovoltaic cell is embedded inside the film; there is no need to set openings on the film corresponding to the through holes, which can reduce the complexity of operation and improve the production efficiency of photovoltaic tiles; at the same time, since the structural setting and material setting of the positioning module are improved, it is easy to take out after lamination, and there is no need to use a drill to drill holes to take out the positioning module, thereby reducing the risk of packaging plate breakage and improving the convenience of taking out the positioning module; in addition, after the packaging is completed, the film will form an integrated sleeve inside the through hole, and there is no need to set a plastic sleeve separately, which can reduce production costs, and avoid the problem of loosening and falling off of the non-integrated sleeve, thereby improving the packaging quality of the photovoltaic tiles.

[0110] It should be noted that various embodiments of the present disclosure have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The choice of terms used in this article is intended to best explain the principles of the embodiments, practical applications, or technical improvements in the market, or to enable other ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A photovoltaic tile, characterized in that: The photovoltaic tile comprises: A packaging board, comprising a first packaging board and a second packaging board; An adhesive film layer, the adhesive film layer comprising a first connection layer and a second connection layer; the first connection layer is disposed between the first packaging board and the second packaging board; A through hole, which penetrates the packaging board and the first connection layer, so that a first mounting hole is opened in the first packaging board, a second mounting hole is opened in the second packaging board, and a third mounting hole is opened in the first connection layer; in the adhesive film layer, the second connection layer covers the inner wall of the through hole; The battery layer is packaged between the first packaging board and the second packaging board.

2. A photovoltaic tile according to claim 1, characterized in that: The first connecting layer and the second connecting layer are an integrated structure; The second connection layer forms a through sleeve inside the through hole.

3. A photovoltaic tile according to claim 1, characterized in that: In the adhesive film layer, at least a portion of the first connection layer is disposed between the first packaging plate and the battery layer; And / or, at least a portion of the first connection layer is disposed between the second packaging plate and the battery layer.

4. A photovoltaic tile according to claim 2, characterized in that: The material of the adhesive film layer is one of ethylene-vinyl acetate copolymer or polyvinyl butyral; And / or, the thickness of the second connecting layer is in the range of 0.1 mm to 5 mm.

5. A positioning member, applied to the photovoltaic tile according to any one of claims 1 to 4, characterized in that: The positioning member includes a positioning portion; The height of the positioning member is not less than the depth of the through hole; the size of the horizontal cross section of the positioning member and the size of the horizontal cross section of the through hole satisfy: When the positioning member is placed in the through hole, the spacing between the outer wall of the positioning member and the inner wall of the through hole is in the range of 0.1 mm to 5 mm.

6. A positioning member according to claim 5, characterized in that: The positioning portion is in a columnar shape, and the positioning member further comprises a supporting portion arranged on an outer side wall of the positioning portion, wherein the supporting portion is a protrusion on the outer side wall of the positioning portion.

7. A positioning member according to claim 6, characterized in that: The positioning portion and the supporting portion are in a columnar structure as a whole, and the horizontal cross section of the positioning member includes a first width and a second width in the horizontal direction; The first width is the diameter of the columnar positioning portion, and the second width is the sum of the first width and the width of one or two of the supporting portions along the radial direction of the positioning portion.

8. A positioning member according to claim 5, characterized in that: The positioning element further comprises an anti-sticking layer covering the outer surface.

9. A positioning member according to claim 6, characterized in that: The positioning part and the supporting part are an integrated structure, and the materials of the positioning part and the supporting part are both engineering plastics.

10. A method for packaging photovoltaic tiles, applied to the photovoltaic tiles according to any one of claims 1 to 4, characterized in that: The method comprises: Placing a first packaging board, a film layer to be laminated, a battery layer, and a second packaging board, so that the first mounting hole of the first packaging board and the second mounting hole of the second packaging board are aligned, the first packaging board and the second packaging board are arranged on both sides of the film layer to be laminated, and the film layer to be laminated blocks the first mounting hole and the second mounting hole; Placing a positioning member inside a second mounting hole in the second packaging board so that a first distance is formed between an outer wall of the positioning member and an inner wall of the second mounting hole, and a second surface of the positioning member contacts the adhesive film layer to be laminated; The positioning member is hot pressed so that the adhesive film layer to be laminated at the bottom of the second mounting hole forms the second connection layer covering the inner wall of the through hole under the pressure of the positioning member.

11. A method for packaging photovoltaic tiles according to claim 10, characterized in that: The first spacing ranges from 0.1 mm to 5 mm; and the hot pressing of the positioning member comprises: The adhesive film layer to be laminated at the bottom of the second mounting hole is subjected to a heating treatment until the temperature reaches a target temperature; the target temperature ranges from 110° C. to 160° C., and the heating treatment time ranges from 4 min to 40 min; The positioning member is subjected to a pressurizing treatment so that the external pressure is transmitted to the adhesive film layer to be laminated at the bottom of the second mounting hole through the positioning member.

12. A method for packaging photovoltaic tiles according to claim 10, characterized in that: After placing the positioning member inside the second through hole in the second packaging plate, the method includes: The first surface of the positioning member is covered with a fixing tape.

13. A method for packaging photovoltaic tiles according to claim 10, characterized in that: After forming the second connection layer inside the through hole, the method includes: The positioning piece is taken out from the through hole to obtain the photovoltaic tile.

Images