Curved photovoltaic tile processing method and curved photovoltaic tile

Abstract

Disclosed are a curved photovoltaic tile (100) processing method and a curved photovoltaic tile (100). The curved photovoltaic tile (100) processing method comprises: sequentially stacking a first adhesive film layer (141), a solar cell (110), and a first protective layer (120); performing primary lamination on the first adhesive film layer (141), the solar cell (110), and the first protective layer (120) to form a flat, laminated assembly (150); sequentially stacking a rigid, curved second protective layer (130), a second adhesive film layer (142), and the laminated assembly (150); and performing secondary lamination on the second protective layer (130), the second adhesive film layer (142), and the laminated assembly (150) to form the curved photovoltaic tile (100).

Description

Processing method of curved photovoltaic tile and curved photovoltaic tile

[0001] Priority information

[0002] The present application claims priority to and the benefit of the filing date of Chinese Patent Application No. 202410733155.X filed on June 6, 2024, and which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present application relates to the technical field of photovoltaic devices, in particular to a processing method of a curved photovoltaic tile and the curved photovoltaic tile. BACKGROUND

[0004] In the prior art, the cell piece of the double-sided power generation photovoltaic tile is usually a silicon crystal cell piece with low strength, which leads to the easy breakage of the cell piece. SUMMARY

[0005] The present application aims to at least solve one of the problems in the prior art or related art.

[0006] To this end, a first object of the present application is to provide a processing method of a curved photovoltaic tile.

[0007] A second object of the present application is to provide a curved photovoltaic tile.

[0008] To achieve the above at least one object, according to a first aspect of the present application, a processing method of a curved photovoltaic tile is provided, the processing method comprising: sequentially stacking a first adhesive film layer, a solar cell piece and a first protective layer; performing primary lamination on the first adhesive film layer, the solar cell piece and the first protective layer to form a planar laminated assembly; sequentially stacking a rigid curved second protective layer, a second adhesive film layer and the laminated assembly; and performing secondary lamination on the second protective layer, the second adhesive film layer and the laminated assembly to form the curved photovoltaic tile.

[0009] The processing method of the curved photovoltaic tile provided by the present application is used for processing the curved photovoltaic tile. The processing method processes the curved photovoltaic tile through secondary lamination. First, the first adhesive film layer, the solar cell piece and the first protective layer are sequentially stacked, and then the first adhesive film layer, the solar cell piece and the first protective layer are subjected to primary lamination to form a planar laminated assembly. Specifically, the first adhesive film layer, the solar cell piece and the first protective layer can be subjected to primary lamination by a first laminator. During the primary lamination, the first adhesive film layer is softened and bonded to the solar cell piece by heat, a part of the first protective layer is softened by heat, the solar cell piece is embedded in the first protective layer under the action of pressure, and the solar cell piece and the first protective layer are integrated to improve the strength of the solar cell piece.

[0010] Further, the second protective layer, the second adhesive film layer and the laminated assembly are sequentially stacked, and then the second protective layer, the second adhesive film layer and the laminated assembly are subjected to secondary lamination. In the secondary lamination process, the second adhesive film layer is softened by heat and bonded with the first adhesive film layer in the laminated assembly, and the second protective layer is bonded to the laminated assembly through the second adhesive film layer to form the curved photovoltaic tile.

[0011] By using the above processing method to process the curved photovoltaic tile, the curved photovoltaic tile can be processed and formed by the secondary lamination method. Compared with the primary lamination processing method, the bending resistance of the solar cell is improved, the probability of hidden cracking of the solar cell is reduced, and the stability and reliability of the curved photovoltaic tile are improved.

[0012] In some technical solutions, the first protective layer includes a hard protective layer and a bonding layer. The first adhesive film layer, the solar cell and the first protective layer are subjected to primary lamination, specifically: the solar cell is pressed into the bonding layer to make the solar cell and the bonding layer solidify as a whole; and the first adhesive film layer is bonded to the bonding layer.

[0013] In this technical solution, the processing method of the curved photovoltaic tile is further limited. The first protective layer includes a hard protective layer and a bonding layer, and the first adhesive film layer, the solar cell and the first protective layer are subjected to primary lamination. Specifically, the solar cell is first pressed into the bonding layer to make the solar cell and the bonding layer solidify as a whole, and then the first adhesive film layer is bonded to the bonding layer.

[0014] Specifically, the bonding layer is in a soft state structure at room temperature and is easy to embed the solar cell. After the solar cell is embedded in the bonding layer under the action of pressure, the bonding layer is solidified by heating, so that the solar cell and the bonding layer solidify as a whole, and then the strength of the solar cell is improved through the bonding layer. The bonding layer is located on the side of the hard protective layer facing the first adhesive film layer. After the bonding layer is heated and solidified, the bonding layer and the first adhesive film layer are bonded to each other, so that the first adhesive film layer can bond the first protective layer and the second protective layer into a whole.

[0015] By providing the hard protective layer and the bonding layer in the first protective layer, the solar cell can be embedded in the bonding layer, the bonding layer and the solar cell are solidified as a whole to improve the strength of the solar cell, and the hard protective layer can further protect the solar cell to improve the stability and reliability of the curved photovoltaic tile.

[0016] In some embodiments, the second protective layer, the second adhesive film layer and the laminated assembly of the rigid curved surface are sequentially stacked, specifically: the second protective layer and the second adhesive film layer are stacked; the first adhesive film layer in the laminated assembly faces the second adhesive film layer, and the laminated assembly is placed above the second adhesive film layer.

[0017] In this embodiment, the step of sequentially stacking the second protective layer, the second adhesive film layer and the laminated assembly of the rigid curved surface is specifically defined. First, the second protective layer and the second adhesive film layer are stacked, and then the first adhesive film layer in the laminated assembly faces the second adhesive film layer, and the laminated assembly is placed above the second adhesive film layer. In this way, after secondary lamination, the second protective layer is bonded to the first adhesive film layer in the laminated assembly through the second adhesive film layer, so that the first protective layer, the solar cell, the first adhesive film layer, the second adhesive film layer and the second protective layer become an integral whole to form a curved photovoltaic tile. The first laminating machine can be a planar laminating machine.

[0018] In some embodiments, the curved photovoltaic tile is subjected to primary lamination by the first laminating machine, and the first adhesive film layer, the solar cell and the first protective layer are subjected to primary lamination, specifically: the heating device of the first laminating machine is controlled to heat the first laminating machine to a temperature range of 145℃ to 150℃; the evacuation device of the first laminating machine is controlled to perform vacuum evacuation operation in the first laminating machine, and the running time of the evacuation device of the first laminating machine is in a time range of 360s to 720s; the first laminating machine is controlled to laminate the first adhesive film layer, the solar cell and the first protective layer at a first pressure for a first time, the first pressure being in a range of 20kPa to 30kPa, and the first time being in a range of 30s to 60s; the first laminating machine is controlled to laminate the first adhesive film layer, the solar cell and the first protective layer at a second pressure for a second time, the second pressure being in a range of 40kPa to 50kPa, and the second time being in a range of 30s to 60s; the first laminating machine is controlled to laminate the first adhesive film layer, the solar cell and the first protective layer at a third pressure for a third time, the third pressure being in a range of 95kPa to 100kPa, and the third time being in a range of 30min to 40min.

[0019] In the technical solution, the processing method of the curved photovoltaic tile is further limited. The curved photovoltaic tile is laminated by the first laminating machine once. The first adhesive film layer, the solar cell and the first protective layer are laminated once. The step is specifically as follows: first, control the heating device of the first laminating machine to heat the first laminating machine to a temperature range of 145 DEG C to 150 DEG C, then control the vacuumizing device of the first laminating machine to perform vacuumizing operation on the first laminating machine, the running time of the vacuumizing device of the first laminating machine is in a time range of 360s to 720s; then the first adhesive film layer, the solar cell and the first protective layer are laminated for different time lengths by using different pressures.

[0020] Specifically, first, control the first laminating machine to laminate the first adhesive film layer, the solar cell and the first protective layer for a first time length at a first pressure, the first pressure is in a range of 20kPa to 30kPa, and the first time length is in a range of 30s to 60s. Then, control the first laminating machine to laminate the first adhesive film layer, the solar cell and the first protective layer for a second time length at a second pressure, the second pressure is in a range of 40kPa to 50kPa, and the second time length is in a range of 30s to 60s. Then, control the first laminating machine to laminate the first adhesive film layer, the solar cell and the first protective layer for a third time length at a third pressure, the third pressure is in a range of 95kPa to 100kPa, and the third time length is in a range of 30min to 40min.

[0021] By laminating the first adhesive film layer, the solar cell and the first protective layer for different time lengths by using different pressures, the solar cell can be embedded in the first protective layer, the first protective layer and the solar cell can be solidified as a whole, and the strength of the solar cell can be improved by the first protective layer.

[0022] In some technical solutions, optionally, the curved photovoltaic tile is further subjected to secondary lamination by a second laminator to perform secondary lamination on the second protective layer, the second film layer and the laminated assembly, specifically: the vacuumizing device of the second laminator is controlled to perform vacuumizing operation in the second laminator, and the operation duration of the vacuumizing device of the second laminator is within a duration range of 10 min to 12 min; the heating device of the second laminator is controlled to heat the second laminator to a temperature range of 80°C to 90°C; the second laminator is controlled to laminate the second protective layer, the second film layer and the laminated assembly at a fourth pressure for a fourth duration, the fourth pressure is within a range of 99 kPa to 100 kPa, and the fourth duration is within a range of 5 min to 10 min; the heating device of the second laminator is controlled to heat the second laminator to a temperature range of 100°C to 110°C; the second laminator is controlled to laminate the second protective layer, the second film layer and the laminated assembly at the fourth pressure for the fourth duration; the heating device of the second laminator is controlled to heat the second laminator to a temperature range of 120°C to 130°C; the second laminator is controlled to laminate the second protective layer, the second film layer and the laminated assembly at the fourth pressure for the fourth duration; the heating device of the second laminator is controlled to heat the second laminator to a temperature range of 150°C to 160°C; and the second laminator is controlled to laminate the second protective layer, the second film layer and the laminated assembly at the fourth pressure for a fifth duration, the fifth duration is within a range of 40 min to 60 min.

[0023] In this technical solution, the processing method of the curved photovoltaic tile is further limited. The curved photovoltaic tile is further subjected to secondary lamination by a second laminator to perform secondary lamination on the second protective layer, the second film layer and the laminated assembly, specifically: first, the vacuumizing device of the second laminator is controlled to perform vacuumizing operation in the second laminator, and the operation duration of the vacuumizing device of the second laminator is within a duration range of 10 min to 12 min; then, the laminated assembly, the second film layer and the second protective layer are laminated at different pressures for different durations at different temperatures. The second laminator can be a silicone bag laminator.

[0024] Specifically, first, the heating device of the second laminator is controlled to heat the inside of the second laminator to a temperature range of 80-90°C, and the second laminator is controlled to laminate the second protective layer, the second film layer and the laminated assembly at a fourth pressure for a fourth duration, the fourth pressure ranging from 99-100 kPa, and the fourth duration ranging from 5-10 min. Then, the heating device of the second laminator is controlled to heat the inside of the second laminator to a temperature range of 100-110°C, and the second laminator is controlled to laminate the second protective layer, the second film layer and the laminated assembly at the fourth pressure for the fourth duration. Thereafter, the heating device of the second laminator is controlled to heat the inside of the second laminator to a temperature range of 120-130°C, and the second laminator is controlled to laminate the second protective layer, the second film layer and the laminated assembly at the fourth pressure for the fourth duration. Thereafter, the heating device of the second laminator is controlled to heat the inside of the second laminator to a temperature range of 150-160°C, and the second laminator is controlled to laminate the second protective layer, the second film layer and the laminated assembly at the fourth pressure for a fifth duration, the fifth duration ranging from 40-60 min.

[0025] By laminating the laminated assembly, the second film layer and the second protective layer at different pressures for different durations at different temperatures, the laminated assembly, the second film layer and the second protective layer can be formed into a whole to form the curved photovoltaic tile.

[0026] The second aspect of the present application further provides a curved photovoltaic tile, comprising: a solar cell piece for converting light energy into electric energy, the solar cell piece having a back light side and a light receiving side opposite to each other; a first protective layer, a portion of the first protective layer being located on the back light side of the solar cell piece; a first film layer located on the light receiving side of the solar cell piece; a second protective layer, the second protective layer being located on a side of the first film layer away from the solar cell piece; and a second film layer located between the second protective layer and the first film layer.

[0027] The curved photovoltaic tile provided by the present application comprises a solar cell piece, a first protective layer, a second protective layer, a first film layer and a second film layer, wherein the solar cell piece is used for receiving light and converting light energy into electric energy, the first protective layer and the second protective layer are used for protecting the solar cell piece, and the first film layer and the second film layer are used for bonding the first protective layer and the second protective layer, so that the solar cell piece, the first protective layer and the second protective layer are formed into a whole.

[0028] Specifically, the solar cell piece has a back light side and a light receiving side opposite to each other, and both the light receiving side and the back light side can receive light, so that the solar cell piece can generate electricity on both sides. The solar cell piece can be a crystalline silicon cell piece or a thin-film cell piece.

[0029] Further, the first protective layer is light-transmissive, and light can pass through the first protective layer to the back light side, so that the back light side can receive light. The solar cell is embedded in the first protective layer, a part of the first protective layer is located at the back light side of the solar cell, and the solar cell is integrated with the first protective layer, so that the strength of the solar cell can be improved through the first protective layer, and the probability of hidden cracking of the solar cell is reduced.

[0030] Further, the first adhesive film layer is located at the light receiving side of the solar cell, the second adhesive film layer is located between the second protective layer and the first adhesive film layer, the second protective layer is located at the side of the first adhesive film layer away from the solar cell, and the second protective layer is bonded to the first protective layer through the first adhesive film layer and the second adhesive film layer, thereby further protecting the solar cell through the second protective layer. Specifically, the light receiving side of the solar cell faces the second protective layer, the second protective layer is light-transmissive, and light can pass through the second protective layer to the light receiving side, so that the light receiving side can receive light. In this way, the technical effect of double-sided power generation of the solar cell can be achieved. The material of the second protective layer is tempered glass.

[0031] Further, when processing the curved photovoltaic tile, the first protective layer, the solar cell and the first adhesive film layer are first laminated once, the solar cell is pressed into the first protective layer, and the first adhesive film layer is bonded to the first protective layer. The first protective layer, the solar cell and the first adhesive film layer are first laminated into an integral whole to form a laminated assembly. Then the second adhesive film layer is placed between the second protective layer and the laminated assembly, and then laminated again to bond the second protective layer to the laminated assembly through the second adhesive film layer, so that the first protective layer, the solar cell, the first adhesive film layer, the second adhesive film layer and the second protective layer become an integral whole to form the curved photovoltaic tile.

[0032] The materials of the first adhesive film layer and the second adhesive film layer can be EVA (ethylene vinyl acetate polymer), POE (polyethylene), PVB (polyvinyl butyral) or organic silicone glue.

[0033] By providing the first adhesive film layer and the second adhesive film layer in the curved photovoltaic tile, the curved photovoltaic tile can be processed through a two-step lamination process. Compared with the traditional one-step lamination process, the bending resistance of the solar cell is improved, the probability of hidden cracking of the solar cell is reduced, and the stability and reliability of the curved photovoltaic tile are improved.

[0034] According to the curved photovoltaic tile of the present application, the following technical features can also be provided:

[0035] In some embodiments, the first protective layer comprises: a hard protective layer; and a bonding layer located on a side of the hard protective layer facing the first adhesive film, the solar cell being embedded in the bonding layer, and the first adhesive film being bonded to the bonding layer.

[0036] In this embodiment, the structure of the first protective layer is defined. The first protective layer comprises a hard protective layer and a bonding layer, and the hard protective layer and the bonding layer are stacked together, and the solar cell is embedded in the bonding layer. Specifically, the bonding layer is in a soft state at room temperature, and the solar cell is easily embedded in the bonding layer. After the solar cell is embedded in the bonding layer under pressure, the bonding layer is heated to solidify the bonding layer, so that the solar cell and the bonding layer are solidified as a whole, and the strength of the solar cell is improved by the bonding layer. The bonding layer is located on a side of the hard protective layer facing the first adhesive film. After the bonding layer is heated and solidified, the bonding layer and the first adhesive film are bonded to each other, so that the first adhesive film can bond the first protective layer and the second protective layer as a whole.

[0037] The bonding layer and the hard protective layer are both transparent to light, so that the solar cell can normally receive light. The thickness of the bonding layer ranges from 0.2 mm to 0.5 mm, and the thickness of the hard protective layer ranges from 0.2 mm to 0.7 mm. The material of the bonding layer is resin, and the material of the hard protective layer is PET (polyethylene terephthalate).

[0038] By providing the hard protective layer and the bonding layer in the first protective layer, the solar cell can be embedded in the bonding layer, the bonding layer and the solar cell are solidified as a whole to improve the strength of the solar cell, and the hard protective layer can further protect the solar cell to improve the stability and reliability of the curved photovoltaic tile.

[0039] In some embodiments, the material of the bonding layer is resin.

[0040] In this embodiment, the bonding layer is defined. Specifically, the material of the bonding layer is resin, which is in a soft state at room temperature and solidifies after heating. The solidified resin has high strength. When the solar cell and the first protective layer are laminated, the solar cell is first pressed into the bonding layer by pressure, and then the bonding layer is heated to solidify, so that the solar cell and the bonding layer are solidified as a whole. The solidified bonding layer has high strength, thereby improving the strength of the solar cell and reducing the probability of hidden cracks of the solar cell.

[0041] In some embodiments, the surfaces of the solar cell, the first protective layer, and the second protective layer are curved.

[0042] In the technical solution, the solar cell sheet, the first protective layer and the second protective layer are further limited. Specifically, the surfaces of the solar cell sheet, the first protective layer and the second protective layer are all curved surfaces, so that the curved photovoltaic tile becomes a curved product. In this way, the aesthetic property of the curved photovoltaic tile is improved, and the curved photovoltaic tile can be applied to more kinds of photovoltaic equipment.

[0043] In some technical solutions, the first adhesive film layer and the second adhesive film layer are optionally light-transmissive.

[0044] In the technical solution, the first adhesive film layer and the second adhesive film layer are limited. Specifically, the first adhesive film layer and the second adhesive film layer are both light-transmissive, and light can pass through the first adhesive film layer and the second adhesive film layer to the solar cell sheet in sequence, so that the solar cell sheet can generate electricity on both sides.

[0045] By setting the first adhesive film layer and the second adhesive film layer to be light-transmissive, light can pass through the first adhesive film layer and the second adhesive film layer, so that the solar cell sheet can generate electricity on both sides. Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter in the description. BRIEF DESCRIPTION OF DRAWINGS

[0046] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the accompanying drawings, in which:

[0047] FIG. 1 shows one of the exploded views of the curved photovoltaic tile according to an embodiment of the present application;

[0048] FIG. 2 shows another of the exploded views of the curved photovoltaic tile according to an embodiment of the present application;

[0049] FIG. 3 shows a structural schematic view of the first protective layer according to an embodiment of the present application;

[0050] FIG. 4 shows a structural schematic view of the first protective layer, the solar cell sheet and the first adhesive film layer before primary lamination according to an embodiment of the present application;

[0051] FIG. 5 shows a structural schematic view of the first protective layer, the solar cell sheet and the first adhesive film layer after primary lamination according to an embodiment of the present application;

[0052] FIG. 6 shows a structural schematic view of the second protective layer, the second adhesive film layer and the lamination assembly before secondary lamination according to an embodiment of the present application;

[0053] FIG. 7 shows one of the flow schematic views of the processing method of the curved photovoltaic tile according to an embodiment of the present application;

[0054] Fig. 8 shows a flowchart of a processing method of the curved photovoltaic tile according to an embodiment of the present application;

[0055] Fig. 9 shows a flowchart of a processing method of the curved photovoltaic tile according to an embodiment of the present application;

[0056] Fig. 10 shows a flowchart of a processing method of the curved photovoltaic tile according to an embodiment of the present application;

[0057] Fig. 11 shows a flowchart of a processing method of the curved photovoltaic tile according to an embodiment of the present application.

[0058] In the figures, the correspondence between the reference numerals and the component names in Figs. 1-6 is as follows:

[0059] 100 curved photovoltaic tile, 110 solar cell piece, 111 back light side, 112 light receiving side, 120 first protective layer, 121 hard protective layer, 122 adhesive layer, 130 second protective layer, 141 first adhesive film layer, 142 second adhesive film layer, 150 laminated assembly. DETAILED DESCRIPTION

[0060] Embodiments of the present application are described in detail below with reference to the attached drawing figures, wherein the same or like component have the same or similar designations. The embodiments described below are presented by way of example to explain the present application, and are not intended to limit the present application.

[0061] The following disclosure provides many different embodiments, or examples, for implementing different structures of the present application. For the purpose of simplification, the elements of the different examples of the present application are described in the following description with reference to the drawings. Of course, they are merely examples and are not intended to limit the present application. The reference numbers and / or reference letters of the embodiments of the present application can be repeatedly referred to in different examples, which is for the purpose of simplification and clarity, and does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the embodiments of the present application provide examples of various specific processes and materials, but those of ordinary skill in the art can realize the application of other processes and / or the use of other materials.

[0062] The processing method of the curved photovoltaic tile 100 and the curved photovoltaic tile 100 according to some embodiments of the present application are described below with reference to Figs. 1-11.

[0063] In an embodiment of the present application, as shown in Fig. 7, a flowchart of a processing method of the curved photovoltaic tile according to an embodiment of the present application is shown. The processing method includes the following steps S102-S108:

[0064] S102: sequentially stack the first adhesive film layer, the solar cell piece and the first protective layer;

[0065] S104: perform one-time lamination on the first adhesive film layer, the solar cell piece and the first protective layer to form a planar laminated assembly;

[0066] S106: sequentially stack the rigid curved second protective layer, the second adhesive film layer and the laminated assembly;

[0067] S108: perform two-time lamination on the second protective layer, the second adhesive film layer and the laminated assembly to form the curved photovoltaic tile.

[0068] The processing method of the curved photovoltaic tile provided in the present application is used for processing the curved photovoltaic tile. The processing method processes the curved photovoltaic tile through two-time lamination. First, the first adhesive film layer, the solar cell piece and the first protective layer are sequentially stacked. Then, one-time lamination is performed on the first adhesive film layer, the solar cell piece and the first protective layer to form a planar laminated assembly. Specifically, the first adhesive film layer, the solar cell piece and the first protective layer can be laminated by a first laminator. In the one-time lamination process, the first adhesive film layer is softened by heat and adhered to the solar cell piece. Part of the first protective layer is softened by heat. The solar cell piece is embedded in the first protective layer under the action of pressure. The solar cell piece and the first protective layer are integrated to improve the strength of the solar cell piece.

[0069] Further, the rigid curved second protective layer, the second adhesive film layer and the laminated assembly are sequentially stacked. Then, two-time lamination is performed on the second protective layer, the second adhesive film layer and the laminated assembly. In the two-time lamination process, the second adhesive film layer is softened by heat and adhered to the first adhesive film layer in the laminated assembly. The second protective layer is adhered to the laminated assembly through the second adhesive film layer to form the curved photovoltaic tile.

[0070] By using the above processing method to process the curved photovoltaic tile, the curved photovoltaic tile can be processed and formed by two-time lamination. Compared with the one-time lamination processing method, the bending resistance of the solar cell piece is improved, the probability of hidden cracking of the solar cell piece is reduced, and the stability and reliability of the curved photovoltaic tile are improved.

[0071] In an embodiment according to the present application, as shown in FIG. 3, the first protective layer 120 includes a hard protective layer 121 and an adhesive layer 122. As shown in FIG. 8, a flowchart of the processing method of the curved photovoltaic tile according to the embodiment of the present application is shown. The processing method includes the following steps S202 to S210:

[0072] S202: sequentially stack the first adhesive film layer, the solar cell piece and the first protective layer;

[0073] S204: press the solar cell into the adhesive layer to make the solar cell and the adhesive layer solidify as a whole;

[0074] S206: adhere the first adhesive film layer to the adhesive layer;

[0075] S208: sequentially stack the second protective layer of rigid surface, the second adhesive film layer and the laminated assembly;

[0076] S210: perform secondary lamination on the second protective layer, the second adhesive film layer and the laminated assembly to form the curved photovoltaic tile.

[0077] In this embodiment, the processing method of the curved photovoltaic tile is further limited. The first protective layer includes a hard protective layer and an adhesive layer. The step of performing primary lamination on the first adhesive film layer, the solar cell and the first protective layer is specifically as follows. First, press the solar cell into the adhesive layer to make the solar cell and the adhesive layer solidify as a whole, and then adhere the first adhesive film layer to the adhesive layer.

[0078] Specifically, the adhesive layer is in a soft state structure at room temperature and is easy to embed the solar cell. After the solar cell is embedded into the adhesive layer under the action of pressure, the adhesive layer can be solidified by heating, so that the solar cell and the adhesive layer solidify as a whole, and then the strength of the solar cell is improved through the adhesive layer. The adhesive layer is located on the side of the hard protective layer facing the first adhesive film layer. After the adhesive layer is heated and solidified, the adhesive layer and the first adhesive film layer are adhered to each other, so that the first adhesive film layer can adhere the first protective layer and the second protective layer as a whole.

[0079] By providing the hard protective layer and the adhesive layer in the first protective layer, the solar cell can be embedded into the adhesive layer, the adhesive layer and the solar cell solidify as a whole to improve the strength of the solar cell, and the hard protective layer can further protect the solar cell to improve the stability and reliability of the curved photovoltaic tile.

[0080] In an embodiment according to the present application, as shown in FIG. 9, a flowchart of a processing method of a curved photovoltaic tile according to an embodiment of the present application is shown. The processing method includes the following steps S302-S312:

[0081] S302: sequentially stack the first adhesive film layer, the solar cell and the first protective layer;

[0082] S304: press the solar cell into the adhesive layer to make the solar cell and the adhesive layer solidify as a whole;

[0083] S306: adhere the first adhesive film layer to the adhesive layer to form a laminated assembly;

[0084] S308: stack the second protective layer and the second film layer;

[0085] S310: place the first film layer in the lamination assembly towards the second film layer, and place the lamination assembly above the second film layer;

[0086] S312: perform secondary lamination on the second protective layer, the second film layer and the lamination assembly to form the curved photovoltaic tile.

[0087] In this embodiment, the step of stacking the rigid curved second protective layer, the second film layer and the lamination assembly in sequence is specifically limited. First, the second protective layer and the second film layer are stacked, and then the first film layer in the lamination assembly is placed towards the second film layer, and the lamination assembly is placed above the second film layer. In this way, after secondary lamination, the second protective layer is bonded to the first film layer in the lamination assembly through the second film layer, so that the first protective layer, the solar cell, the first film layer, the second film layer and the second protective layer become an integral whole to form the curved photovoltaic tile. The first laminator can be a planar laminator.

[0088] In an embodiment according to the present application, the curved photovoltaic tile is subjected to primary lamination by the first laminator, as shown in FIG. 10, which shows a fourth flowchart of the processing method of the curved photovoltaic tile according to the embodiment of the present application. The step of primary lamination of the first film layer, the solar cell and the first protective layer includes the following steps S402 to S410:

[0089] S402: control the heating device of the first laminator to heat the first laminator to a temperature range of 145°C to 150°C;

[0090] S404: control the evacuation device of the first laminator to perform vacuum evacuation operation in the first laminator, and the operation time of the evacuation device of the first laminator is in the time range of 360s to 720s;

[0091] S406: control the first laminator to laminate the first film layer, the solar cell and the first protective layer at a first pressure for a first time, and the first pressure is in the range of 20kPa to 30kPa, and the first time is in the range of 30s to 60s;

[0092] S408: control the first laminator to laminate the first film layer, the solar cell and the first protective layer at a second pressure for a second time, and the second pressure is in the range of 40kPa to 50kPa, and the second time is in the range of 30s to 60s;

[0093] S410: control the first laminator to laminate the first adhesive film layer, the solar cell and the first protective layer for a third time length at a third pressure, the third pressure ranges from 95 kPa to 100 kPa, and the third time length ranges from 30 min to 40 min.

[0094] In this embodiment, the processing method of the curved photovoltaic tile is further limited. The curved photovoltaic tile is laminated once by the first laminator. The step of laminating the first adhesive film layer, the solar cell and the first protective layer once is specifically as follows. First, control the heating device of the first laminator to heat the first laminator to a temperature ranging from 145°C to 150°C. Then, control the vacuumizing device of the first laminator to perform vacuumizing operation in the first laminator. The running time of the vacuumizing device of the first laminator ranges from 360 s to 720 s. Then, the first adhesive film layer, the solar cell and the first protective layer are laminated for different time lengths at different pressures.

[0095] Specifically, first, control the first laminator to laminate the first adhesive film layer, the solar cell and the first protective layer for a first time length at a first pressure, the first pressure ranges from 20 kPa to 30 kPa, and the first time length ranges from 30 s to 60 s. Then, control the first laminator to laminate the first adhesive film layer, the solar cell and the first protective layer for a second time length at a second pressure, the second pressure ranges from 40 kPa to 50 kPa, and the second time length ranges from 30 s to 60 s. Then, control the first laminator to laminate the first adhesive film layer, the solar cell and the first protective layer for a third time length at a third pressure, the third pressure ranges from 95 kPa to 100 kPa, and the third time length ranges from 30 min to 40 min.

[0096] By laminating the first adhesive film layer, the solar cell and the first protective layer for different time lengths at different pressures, the solar cell can be embedded in the first protective layer, and the first protective layer and the solar cell can be solidified as a whole, so that the strength of the solar cell is improved by the first protective layer.

[0097] In an embodiment according to the present application, the curved photovoltaic tile is also laminated twice by the second laminator. As shown in FIG. 11, a flowchart of the processing method of the curved photovoltaic tile according to the embodiment of the present application is shown. The step of laminating the second protective layer, the second adhesive film layer and the laminated assembly twice includes the following steps S502 to S518:

[0098] S502: control the vacuumizing device of the second laminator to perform vacuumizing operation in the second laminator, and the running time of the vacuumizing device of the second laminator ranges from 10 min to 12 min;

[0099] S504: control the heating device of the second laminator to heat the inside of the second laminator to a temperature range of 80-90℃;

[0100] S506: control the second laminator to laminate the second protective layer, the second adhesive film layer and the laminated assembly for a fourth time length at a fourth pressure, the fourth pressure ranging from 99-100kPa, and the fourth time length ranging from 5-10min;

[0101] S508: control the heating device of the second laminator to heat the inside of the second laminator to a temperature range of 100-110℃;

[0102] S510: control the second laminator to laminate the second protective layer, the second adhesive film layer and the laminated assembly for a fourth time length at a fourth pressure;

[0103] S512: control the heating device of the second laminator to heat the inside of the second laminator to a temperature range of 120-130℃;

[0104] S514: control the second laminator to laminate the second protective layer, the second adhesive film layer and the laminated assembly for a fourth time length at a fourth pressure;

[0105] S516: control the heating device of the second laminator to heat the inside of the second laminator to a temperature range of 150-160℃;

[0106] S518: control the second laminator to laminate the second protective layer, the second adhesive film layer and the laminated assembly for a fifth time length at a fourth pressure, the fifth time length ranging from 40-60min.

[0107] In this embodiment, the processing method of the curved photovoltaic tile is further limited. The curved photovoltaic tile is further laminated by the second laminator, and the second laminating of the second protective layer, the second adhesive film layer and the laminated assembly is specifically as follows. First, control the vacuumizing device of the second laminator to perform vacuumizing operation on the inside of the second laminator, and the running time length of the vacuumizing device of the second laminator ranges from 10-12min. Then, the laminated assembly, the second adhesive film layer and the second protective layer are laminated for different time lengths at different temperatures and different pressures. The second laminator can be a silicone bag laminator.

[0108] Specifically, first, the heating device of the second laminator is controlled to heat the inside of the second laminator to a temperature range of 80-90°C, and the second laminator is controlled to laminate the second protective layer, the second film layer and the laminated assembly at a fourth pressure for a fourth duration, the fourth pressure ranging from 99-100 kPa, and the fourth duration ranging from 5-10 min. Then, the heating device of the second laminator is controlled to heat the inside of the second laminator to a temperature range of 100-110°C, and the second laminator is controlled to laminate the second protective layer, the second film layer and the laminated assembly at the fourth pressure for the fourth duration. Thereafter, the heating device of the second laminator is controlled to heat the inside of the second laminator to a temperature range of 120-130°C, and the second laminator is controlled to laminate the second protective layer, the second film layer and the laminated assembly at the fourth pressure for the fourth duration. Thereafter, the heating device of the second laminator is controlled to heat the inside of the second laminator to a temperature range of 150-160°C, and the second laminator is controlled to laminate the second protective layer, the second film layer and the laminated assembly at the fourth pressure for a fifth duration, the fifth duration ranging from 40-60 min.

[0109] By laminating the laminated assembly, the second film layer and the second protective layer at different pressures for different durations at different temperatures, the laminated assembly, the second film layer and the second protective layer can be formed into a whole to form the curved photovoltaic tile.

[0110] In an embodiment according to the present application, as shown in FIGS. 1, 2, 4 and 5, the present application proposes a curved photovoltaic tile 100, comprising: a solar cell piece 110 for converting light energy into electrical energy, the solar cell piece 110 having a back light side 111 and a light receiving side 112 facing away from each other; a first protective layer 120, a portion of the first protective layer 120 being located on the back light side 111 of the solar cell piece 110; a first film layer 141 located on the light receiving side 112 of the solar cell piece 110; a second protective layer 130 located on a side of the first film layer 141 away from the solar cell piece 110; and a second film layer 142 located between the second protective layer 130 and the first film layer 141.

[0111] The curved photovoltaic tile 100 proposed by the present application comprises the solar cell piece 110, the first protective layer 120, the second protective layer 130, the first film layer 141 and the second film layer 142, wherein the solar cell piece 110 is used to receive light and convert light energy into electrical energy, the first protective layer 120 and the second protective layer 130 are used to protect the solar cell piece 110, and the first film layer 141 and the second film layer 142 are used to bond the first protective layer 120 and the second protective layer 130, so that the solar cell piece 110, the first protective layer 120 and the second protective layer 130 are formed into a whole.

[0112] Specifically, the solar cell sheet 110 has a back light side 111 and a light receiving side 112 which are opposite to each other, and both the light receiving side 112 and the back light side 111 can receive light so that the solar cell sheet 110 can generate electricity on both sides. The solar cell sheet 110 can be a crystalline silicon cell sheet or a thin film cell sheet.

[0113] Further, the first protective layer 120 can transmit light, and the light can pass through the first protective layer 120 to the back light side 111 so that the back light side 111 can receive light. The solar cell sheet 110 is embedded in the first protective layer 120, a part of the first protective layer 120 is located at the back light side 111 of the solar cell sheet 110, and the solar cell sheet 110 is integrated with the first protective layer 120, so that the strength of the solar cell sheet 110 can be improved by the first protective layer 120, and the probability of hidden cracks of the solar cell sheet 110 is reduced.

[0114] Further, the first adhesive film layer 141 is located at the light receiving side 112 of the solar cell sheet 110, the second adhesive film layer 142 is located between the second protective layer 130 and the first adhesive film layer 141, the second protective layer 130 is located at the side of the first adhesive film layer 141 away from the solar cell sheet 110, and the second protective layer 130 is bonded to the first protective layer 120 through the first adhesive film layer 141 and the second adhesive film layer 142, thereby further protecting the solar cell sheet 110 through the second protective layer 130. Specifically, the light receiving side 112 of the solar cell sheet 110 faces the second protective layer 130, the second protective layer 130 can transmit light, and the light can pass through the second protective layer 130 to the light receiving side 112 so that the light receiving side 112 can receive light. In this way, the technical effect of the solar cell sheet 110 generating electricity on both sides can be achieved. The material of the second protective layer 130 is tempered glass.

[0115] Further, when the curved photovoltaic tile 100 is processed, the first protective layer 120, the solar cell sheet 110 and the first adhesive film layer 141 are first laminated once, the solar cell sheet 110 is pressed into the first protective layer 120, and the first adhesive film layer 141 is bonded to the first protective layer 120, the first protective layer 120, the solar cell sheet 110 and the first adhesive film layer 141 are first laminated into an integral whole to form a laminated assembly 150. Then the second adhesive film layer 142 is placed between the second protective layer 130 and the laminated assembly 150, and then laminated again so that the second protective layer 130 is bonded to the laminated assembly 150 through the second adhesive film layer 142, and then the first protective layer 120, the solar cell sheet 110, the first adhesive film layer 141, the second adhesive film layer 142 and the second protective layer 130 become an integral whole to form the curved photovoltaic tile 100.

[0116] The material of the first adhesive film layer 141 and the second adhesive film layer 142 can be EVA, POE, PVB or silicone glue.

[0117] By arranging the first adhesive film layer 141 and the second adhesive film layer 142 in the curved photovoltaic tile 100, the curved photovoltaic tile 100 can be processed by a secondary lamination process. Compared with the traditional one-time lamination process, the bending resistance of the solar cell sheet 110 is improved, the probability of hidden cracking of the solar cell sheet 110 is reduced, and the stability and reliability of the curved photovoltaic tile 100 are improved.

[0118] In some embodiments, as shown in FIGS. 3 and 5, the first protective layer 120 includes: a hard protective layer 121; and a bonding layer 122 located on the side of the hard protective layer 121 facing the first adhesive film layer 141, the solar cell sheet 110 being embedded in the bonding layer 122, and the first adhesive film layer 141 being bonded to the bonding layer 122.

[0119] In this embodiment, the structure of the first protective layer 120 is limited. The first protective layer 120 includes the hard protective layer 121 and the bonding layer 122, wherein the hard protective layer 121 and the bonding layer 122 are arranged in a stack, and the solar cell sheet 110 is embedded in the bonding layer 122. Specifically, the bonding layer 122 is in a soft state at room temperature, which facilitates embedding of the solar cell sheet 110. After the solar cell sheet 110 is embedded in the bonding layer 122 under pressure, the bonding layer 122 can be solidified by heating, so that the solar cell sheet 110 and the bonding layer 122 are solidified as a whole, and the strength of the solar cell sheet 110 is improved by the bonding layer 122. The bonding layer 122 is located on the side of the hard protective layer 121 facing the first adhesive film layer 141. After the bonding layer 122 is heated and solidified, the bonding layer 122 and the first adhesive film layer 141 are bonded to each other, so that the first adhesive film layer 141 can bond the first protective layer 120 and the second protective layer 130 as a whole.

[0120] The bonding layer 122 and the hard protective layer 121 are both light-transmissive, so that the solar cell sheet 110 can normally receive light. The thickness of the bonding layer 122 ranges from 0.2 mm to 0.5 mm, and the thickness of the hard protective layer 121 ranges from 0.2 mm to 0.7 mm. The material of the bonding layer 122 is resin, and the material of the hard protective layer 121 is PET.

[0121] By arranging the hard protective layer 121 and the adhesive layer 122 in the first protective layer 120, the solar cell sheet 110 can be embedded in the adhesive layer 122, and the adhesive layer 122 is solidified with the solar cell sheet 110 to improve the strength of the solar cell sheet 110. The hard protective layer 121 can further protect the solar cell sheet 110, and improve the stability and reliability of the curved photovoltaic tile 100.

[0122] In some embodiments, the material of the adhesive layer 122 is resin.

[0123] In this embodiment, the adhesive layer 122 is limited. Specifically, the material of the adhesive layer 122 is resin, which is soft at room temperature and solidifies after heating. The solidified resin has high strength. When laminating the solar cell sheet 110 and the first protective layer 120, the solar cell sheet 110 is first pressed into the adhesive layer 122 by pressure, and then the adhesive layer 122 is heated to solidify, so that the solar cell sheet 110 and the adhesive layer 122 are solidified as a whole. The solidified adhesive layer 122 has high strength, thereby improving the strength of the solar cell sheet 110 and reducing the probability of hidden cracks of the solar cell sheet 110.

[0124] In some embodiments, the surfaces of the solar cell sheet 110, the first protective layer 120, and the second protective layer 130 are curved.

[0125] In this embodiment, the solar cell sheet 110, the first protective layer 120, and the second protective layer 130 are further limited. Specifically, the surfaces of the solar cell sheet 110, the first protective layer 120, and the second protective layer 130 are curved, so that the curved photovoltaic tile 100 becomes a curved product. This not only improves the aesthetics of the curved photovoltaic tile 100, but also makes the curved photovoltaic tile 100 applicable to more types of photovoltaic equipment.

[0126] In some embodiments, the first adhesive film layer 141 and the second adhesive film layer 142 are light-transmissive.

[0127] In this embodiment, the first adhesive film layer 141 and the second adhesive film layer 142 are limited. Specifically, the first adhesive film layer 141 and the second adhesive film layer 142 are both light-transmissive, and light can pass through the first adhesive film layer 141 and the second adhesive film layer 142 to the solar cell sheet 110, so that the solar cell sheet 110 can generate electricity on both sides.

[0128] By arranging the first adhesive film layer 141 and the second adhesive film layer 142 to be light-transmissive, light can pass through the first adhesive film layer 141 and the second adhesive film layer 142, so that the solar cell sheet 110 can generate electricity on both sides.

[0129] In one possible embodiment, as shown in FIG. 1 and FIG. 2, the curved crystalline silicon photovoltaic product (i.e., curved photovoltaic tile 100) is formed by sequentially stacking a composite transparent backboard (i.e., first protective layer 120), a power generation unit (i.e., solar cell sheet 110), a first encapsulating adhesive film (i.e., first adhesive film layer 141), a second encapsulating adhesive film (i.e., second adhesive film layer 142), and a curved tempered glass (i.e., second protective layer 130), and the overall encapsulation is achieved through a two-step lamination process. The composite transparent backboard has the functions of bonding and protection, the first and second encapsulating adhesive films can be EVA, POE, PVB, or silicone adhesive, and the power generation unit is a crystalline silicon cell sheet or a thin-film cell sheet.

[0130] As shown in FIG. 3, the composite transparent backboard mainly consists of two parts, a transparent resin bonding layer (i.e., bonding layer 122) and a transparent PET layer (i.e., hard protective layer 121). The main component of the transparent resin bonding layer is a resin-based bonding material, and the thickness is in the range of 0.2 mm to 0.5 mm. The transparent resin bonding layer is in a soft state at room temperature and solidifies after heating, which can achieve the bonding function. The main material of the transparent PET layer is PET, and the thickness is in the range of 0.2 mm to 0.7 mm. The transparent PET layer provides protection.

[0131] The power generation unit is a crystalline silicon cell sheet or a thin-film cell sheet. The crystalline silicon cell sheet and the thin-film cell sheet are thin and have a certain rigidity, and are prone to hidden cracks when applied to curved photovoltaic products. The material of the transparent resin bonding layer of the transparent composite backboard is a cured resin material, which has higher strength after curing compared to traditional encapsulating adhesive films. During the lamination process of the power generation unit and the composite transparent backboard, the resin material of the transparent resin bonding layer softens under the combined action of temperature and pressure, and the cell sheet is embedded inside the transparent resin bonding layer. After the transparent resin bonding layer is cured, the cell sheet and the composite transparent backboard are combined into a whole, which can better protect the cell sheet and improve the bending resistance of the power generation unit, effectively reducing the probability of hidden cracks of the power generation unit during bending deformation.

[0132] In the process of one-time lamination, since the transparent resin adhesive layer of the transparent composite backsheet cannot completely cover the front surface (i.e., the light-receiving side 112) of the power generation unit, a first encapsulation adhesive film needs to be applied to the front surface of the power generation unit for encapsulation and protection. The one-time lamination process: first, the encapsulation adhesive film, the power generation unit, and the composite transparent backsheet are laid in the order from bottom to top, and then laid and laminated using a conventional flat laminator. The flat laminator has an upper cavity and a lower cavity, and has a pressure difference between the upper cavity and the lower cavity. The pressure in the lower cavity is -100 kPa, and the pressure in the upper cavity is shown in Table 1. The encapsulation adhesive film, the power generation unit, and the composite transparent backsheet are subjected to one-time lamination under the pressure difference between the upper cavity and the lower cavity. The one-time lamination parameters are shown in Table 1. The one-time lamination includes one-stage lamination, two-stage lamination, and three-stage lamination. The one-time lamination structure and the lamination process are shown in FIGS. 4 and 5.

[0133] After the one-time lamination is completed, secondary lamination is performed. In order to achieve good filling and adhesion, a second encapsulation adhesive film needs to be applied to the curved tempered glass during the secondary lamination process. The laying order is: the one-time lamination piece (i.e., the laminated assembly), the second encapsulation adhesive film, and the curved tempered glass are stacked in the order shown in FIG. 6, and then placed into a silicone bag laminator for lamination. The silicone bag lamination parameters are shown in Table 2. The secondary lamination includes one-stage lamination, two-stage lamination, three-stage lamination, and four-stage lamination. Through the two-step lamination process, the functions of anti-crazing and double-sided power generation of the crystalline silicon curved photovoltaic product can be achieved, and the product yield can be improved.

[0134] Table 1

[0135] Table 2

[0136] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0137] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements, and variations can be made to the embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A method of processing a curved photovoltaic tile, wherein, The processing method of the curved photovoltaic tile comprises the following steps: The first adhesive film layer, the solar cell and the first protective layer are sequentially stacked; The first adhesive film layer, the solar cell and the first protective layer are once laminated to form a planar laminated assembly; The rigid curved second protective layer, the second adhesive film layer and the laminated assembly are sequentially stacked; The second protective layer, the second adhesive film layer and the laminated assembly are twice laminated to form the curved photovoltaic tile.

2. The method of processing a curved photovoltaic tile according to claim 1, wherein, The first protective layer comprises a hard protective layer and an adhesive layer, and the once laminating of the first adhesive film layer, the solar cell and the first protective layer is specifically as follows: The solar cell is pressed into the adhesive layer so that the solar cell and the adhesive layer are integrated; The first adhesive film layer is bonded to the adhesive layer.

3. The method of processing a curved photovoltaic tile according to claim 2, wherein, The rigid curved second protective layer, the second adhesive film layer and the laminated assembly are sequentially stacked, and the specific steps are as follows: The second protective layer and the second adhesive film layer are stacked; The first adhesive film layer in the laminated assembly is directed to the second adhesive film layer, and the laminated assembly is placed above the second adhesive film layer.

4. The method of processing a curved photovoltaic tile according to claim 1, wherein, The curved photovoltaic tile is once laminated by a first laminating machine, and the once laminating of the first adhesive film layer, the solar cell and the first protective layer is specifically as follows: The heating device of the first laminating machine is controlled to heat the first laminating machine to a temperature range of 145-150°C; The vacuumizing device of the first laminating machine is controlled to perform vacuumizing operation in the first laminating machine, and the running time of the vacuumizing device of the first laminating machine is in a time range of 360-720s; The first laminating machine is controlled to laminate the first adhesive film layer, the solar cell and the first protective layer at a first pressure for a first time, the first pressure is in a range of 20-30kPa, and the first time is in a range of 30-60s; The first laminating machine is controlled to laminate the first adhesive film layer, the solar cell and the first protective layer at a second pressure for a second time, the second pressure is in a range of 40-50kPa, and the second time is in a range of 30-60s; The first laminating machine is controlled to laminate the first adhesive film layer, the solar cell and the first protective layer at a third pressure for a third time, the third pressure is in a range of 95-100kPa, and the third time is in a range of 30-40min.

5. The method of processing a curved photovoltaic tile according to claim 1, wherein, The curved photovoltaic tile is also twice laminated by a second laminating machine, and the twice laminating of the second protective layer, the second adhesive film layer and the laminated assembly is specifically as follows: The vacuumizing device of the second laminating machine is controlled to perform vacuumizing operation in the second laminating machine, and the running time of the vacuumizing device of the second laminating machine is in a time range of 10-12min; The heating device of the second laminating machine is controlled to heat the second laminating machine to a temperature range of 80-90°C; controlling the second laminating machine to laminate the second protective layer, the second film layer and the laminating assembly for a fourth duration at a fourth pressure, the fourth pressure ranging from 99 kPa to 100 kPa, the fourth duration ranging from 5 min to 10 min; controlling a heating device of the second laminating machine to heat the second laminating machine to a temperature ranging from 100 °C to 110 °C; controlling the second laminating machine to laminate the second protective layer, the second film layer and the laminating assembly for the fourth duration at the fourth pressure; controlling a heating device of the second laminating machine to heat the second laminating machine to a temperature ranging from 120 °C to 130 °C; controlling the second laminating machine to laminate the second protective layer, the second film layer and the laminating assembly for the fourth duration at the fourth pressure; controlling a heating device of the second laminating machine to heat the second laminating machine to a temperature ranging from 150 °C to 160 °C; controlling the second laminating machine to laminate the second protective layer, the second film layer and the laminating assembly for a fifth duration at the fourth pressure, the fifth duration ranging from 40 min to 60 min.

6. A curved photovoltaic tile, wherein, comprising: a solar cell for converting light energy into electrical energy, the solar cell having a back light side and a light receiving side facing away from each other; a first protective layer, a portion of the first protective layer being located on the back light side of the solar cell; a first film layer located on the light receiving side of the solar cell; a second protective layer, the second protective layer being located on a side of the first film layer away from the solar cell; a second film layer located between the second protective layer and the first film layer.

7. The curved photovoltaic tile of claim 6, wherein, the first protective layer comprises: a hard protective layer; an adhesive layer located on a side of the hard protective layer facing the first film layer, the solar cell being embedded in the adhesive layer, and the first film layer being adhered to the adhesive layer.

8. The curved photovoltaic tile according to claim 7, wherein a material of the adhesive layer is resin.

9. The curved photovoltaic tile according to any one of claims 6 to 8, wherein surfaces of the solar cell, the first protective layer and the second protective layer are curved.

10. The curved photovoltaic tile according to any one of claims 6 to 8, wherein, the first film layer and the second film layer are capable of transmitting light.

Images