Curved-surface photovoltaic tile processing method and curved-surface photovoltaic tile

Abstract

The invention provides a processing method of a curved-surface photovoltaic tile and the curved-surface photovoltaic tile. The processing method of the curved-surface photovoltaic tile comprises the steps that a first adhesive film layer, a solar cell and a first protective layer are sequentially arranged in a stacked mode; performing primary lamination on the first adhesive film layer, the solar cell and the first protective layer to form a planar laminated assembly; the second protective layer with the rigid curved surface, the second adhesive film layer and the lamination assembly are sequentially stacked; and carrying out secondary lamination on the second protective layer, the second adhesive film layer and the lamination assembly to form the curved-surface photovoltaic tile. According to the processing method, the curved-surface photovoltaic tile is processed, so that the curved-surface photovoltaic tile can be processed and formed through a secondary lamination method, and compared with a primary lamination processing mode, the bending resistance of the solar cell is improved, the probability of subfissure of the solar cell is reduced, and the service life of the solar cell is prolonged. And the stability and the reliability of the curved-surface photovoltaic tile are improved.

Description

TECHNICAL FIELD

[0001] 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

[0002] 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

[0003] The present application aims to at least solve one of the problems in the prior art or related art.

[0004] To this end, the first object of the present application is to provide a processing method of a curved photovoltaic tile.

[0005] The second object of the present application is to provide a curved photovoltaic tile.

[0006] 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, which comprises: 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.

[0007] 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 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 by heat and adhered to the solar cell piece, 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 solidified as one body to improve the strength of the solar cell piece.

[0008] Further, the rigid curved 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. During the secondary lamination, the second adhesive film layer is softened by heat and adhered to the first adhesive film layer in the laminated assembly, and the second protective layer is adhered to the laminated assembly through the second adhesive film layer to form the curved photovoltaic tile.

[0009] By adopting the above processing method to process the curved photovoltaic tile, the curved photovoltaic tile can be processed and formed by a secondary lamination method. Compared with a one-time 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.

[0010] In some technical solutions, optionally, the first protective layer includes a hard protective layer and an adhesive layer, and the first adhesive film layer, the solar cell, and the first protective layer are laminated once, specifically: the solar cell is pressed into the adhesive layer to make the solar cell and the adhesive layer solidify as a whole; and the first adhesive film layer is adhered to the adhesive layer.

[0011] In this technical solution, the processing method of the curved photovoltaic tile is further limited. The step of laminating the first adhesive film layer, the solar cell, and the first protective layer once includes the following. First, the solar cell is pressed into the adhesive layer to make the solar cell and the adhesive layer solidify as a whole, and then the first adhesive film layer is adhered to the adhesive layer.

[0012] 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 in 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.

[0013] By providing the hard protective layer and the adhesive layer in the first protective layer, the solar cell can be embedded in the adhesive layer, the adhesive layer and the solar cell can be 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.

[0014] In some technical solutions, optionally, the second protective layer of the rigid curved surface, the second adhesive film layer, and the lamination assembly are sequentially stacked, specifically: the second protective layer and the second adhesive film layer are stacked; the first adhesive film layer in the lamination assembly faces the second adhesive film layer, and the lamination assembly is placed above the second adhesive film layer.

[0015] In the technical solution, 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 limited. The second protective layer and the second adhesive film layer are stacked first, and then the first adhesive film layer in the laminated assembly is directed towards 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 piece, 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.

[0016] In some technical solutions, the curved photovoltaic tile is subjected to primary lamination by the first laminating machine, and the first adhesive film layer, the solar cell piece 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 145-150℃; 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 piece and the first protective layer at a first pressure for a first time, the first pressure being in a range of 20-30kPa, and the first time being in a range of 30-60s; the first laminating machine is controlled to laminate the first adhesive film layer, the solar cell piece and the first protective layer at a second pressure for a second time, the second pressure being in a range of 40-50kPa, and the second time being in a range of 30-60s; the first laminating machine is controlled to laminate the first adhesive film layer, the solar cell piece and the first protective layer at a third pressure for a third time, the third pressure being in a range of 95-100kPa, and the third time being in a range of 30-40min.

[0017] In the technical solution, the processing method of the curved photovoltaic tile is further limited. The curved photovoltaic tile is subjected to primary lamination by the first laminating machine, and the first adhesive film layer, the solar cell piece and the first protective layer are subjected to primary lamination, which is specifically as follows: first, the heating device of the first laminating machine is controlled to heat the first laminating machine to a temperature range of 145-150℃, then 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; and then different pressures are used to laminate the first adhesive film layer, the solar cell piece and the first protective layer for different times.

[0018] Specifically, first, the first laminator is controlled to laminate the first adhesive film layer, the solar cell and the first protective layer for a first duration at a first pressure, the first pressure ranges from 20 kPa to 30 kPa, and the first duration ranges from 30 s to 60 s. Then, the first laminator is controlled to laminate the first adhesive film layer, the solar cell and the first protective layer for a second duration at a second pressure, the second pressure ranges from 40 kPa to 50 kPa, and the second duration ranges from 30 s to 60 s. Then, the first laminator is controlled to laminate the first adhesive film layer, the solar cell and the first protective layer for a third duration at a third pressure, the third pressure ranges from 95 kPa to 100 kPa, and the third duration ranges from 30 min to 40 min.

[0019] By laminating the first adhesive film layer, the solar cell and the first protective layer for different durations 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 cured as a whole, so that the strength of the solar cell can be improved by the first protective layer.

[0020] In some technical solutions, the curved photovoltaic tile is further laminated by a second laminator for a second time, and the second protective layer, the second adhesive film layer and the laminated assembly are laminated for a second time, specifically: the vacuum device of the second laminator is controlled to perform vacuumizing operation in the second laminator, and the operation duration of the vacuum device of the second laminator ranges from 10 min to 12 min; the heating device of the second laminator is controlled to heat the second laminator to a temperature ranging from 80℃ to 90℃; the second laminator is controlled to laminate the second protective layer, the second adhesive film layer and the laminated assembly for a fourth duration at a fourth pressure, the fourth pressure ranges from 99 kPa to 100 kPa, and the fourth duration ranges from 5 min to 10 min; the heating device of the second laminator is controlled to heat the second laminator to a temperature ranging from 100℃ to 110℃; the second laminator is controlled to laminate the second protective layer, the second adhesive film layer and the laminated assembly for a fourth duration at the fourth pressure; the heating device of the second laminator is controlled to heat the second laminator to a temperature ranging from 120℃ to 130℃; the second laminator is controlled to laminate the second protective layer, the second adhesive film layer and the laminated assembly for a fourth duration at the fourth pressure; the heating device of the second laminator is controlled to heat the second laminator to a temperature ranging from 150℃ to 160℃; and the second laminator is controlled to laminate the second protective layer, the second adhesive film layer and the laminated assembly for a fifth duration at the fourth pressure, the fifth duration ranges from 40 min to 60 min.

[0021] In the 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. The secondary lamination of the second protective layer, the second adhesive film layer and the laminated assembly is specifically as follows: first, the vacuumizing device of the second laminator is controlled to perform vacuumizing operation in the second laminator. The operation time of the vacuumizing device of the second laminator is in the time range of 10 min to 12 min. 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.

[0022] Specifically, first, the heating device of the second laminator is controlled to heat the second laminator to a temperature in the range of 80℃ to 90℃. The second laminator is controlled 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 is in the range of 99kPa to 100kPa. The fourth time length is in the range of 5min to 10min. Then, the heating device of the second laminator is controlled to heat the second laminator to a temperature in the range of 100℃ to 110℃. The second laminator is controlled to laminate the second protective layer, the second adhesive film layer and the laminated assembly for a fourth time length at a fourth pressure. After that, the heating device of the second laminator is controlled to heat the second laminator to a temperature in the range of 120℃ to 130℃. The second laminator is controlled to laminate the second protective layer, the second adhesive film layer and the laminated assembly for a fourth time length at a fourth pressure. After that, the heating device of the second laminator is controlled to heat the second laminator to a temperature in the range of 150℃ to 160℃. The second laminator is controlled 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 is in the range of 40min to 60min.

[0023] By laminating the laminated assembly, the second adhesive film layer and the second protective layer for different time lengths at different temperatures and different pressures, the laminated assembly, the second adhesive film layer and the second protective layer can form an integral whole to form the curved photovoltaic tile.

[0024] The second aspect of the present application also proposes a curved photovoltaic tile, comprising: a solar cell for converting light energy into electrical energy, the solar cell having a back light side and a light receiving side away from each other; a first protective layer, a part of the first protective layer being located on the back light side of the solar cell; a first adhesive film layer located on the light receiving side of the solar cell; a second protective layer, the second protective layer being located on the side of the first adhesive film layer away from the solar cell; and a second adhesive film layer located between the second protective layer and the first adhesive film layer.

[0025] The curved photovoltaic tile provided in the present application comprises a solar cell, a first protective layer, a second protective layer, a first adhesive film layer and a second adhesive film layer, wherein the solar cell 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, and the first adhesive film layer and the second adhesive film layer are used for bonding the first protective layer and the second protective layer, so that the solar cell, the first protective layer and the second protective layer form an integral whole.

[0026] Specifically, the solar cell has a back light side and a light receiving side which are opposite to each other, and both the light receiving side and the back light side can receive light, so that the solar cell can generate electricity on both sides. The solar cell can be a crystalline silicon cell or a thin film cell.

[0027] Further, the first protective layer can transmit light, and the 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 by the first protective layer, and the probability of hidden cracking of the solar cell is reduced.

[0028] 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, the second protective layer is bonded to the first protective layer through the first adhesive film layer and the second adhesive film layer, and the solar cell is further protected by the second protective layer. Specifically, the light receiving side of the solar cell faces the second protective layer, the second protective layer can transmit light, and the 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.

[0029] Further, when the curved photovoltaic tile is processed, 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, so that the first protective layer, the solar cell and the first adhesive film layer are 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, so that the second protective layer is bonded to the laminated assembly through the second adhesive film layer, and then the first protective layer, the solar cell, the first adhesive film layer, the second adhesive film layer and the second protective layer form an integral whole to form the curved photovoltaic tile.

[0030] The material 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 silicone adhesive.

[0031] By arranging the first adhesive film layer and the second adhesive film layer in the curved photovoltaic tile, the curved photovoltaic tile can be processed by a secondary lamination process. Compared with the traditional one-time 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.

[0032] According to the curved photovoltaic tile, the following distinguished technical features can also be provided:

[0033] In some technical solutions, the first protective layer comprises: a hard protective layer; and an adhesive layer located on the side of the hard protective layer facing the first adhesive film layer, the solar cell being embedded in the adhesive layer, and the first adhesive film layer being bonded to the adhesive layer.

[0034] In this technical solution, the structure of the first protective layer is limited. The first protective layer comprises a hard protective layer and an adhesive layer, and the hard protective layer and the adhesive layer are stacked. The solar cell is embedded in the adhesive layer. Specifically, the adhesive layer is in a soft state at room temperature, making it easy to embed the solar cell. After the solar cell is embedded in the adhesive layer under pressure, the adhesive layer can be hardened by heating, so that the solar cell and the adhesive layer are integrated, and the strength of the solar cell is improved by 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 hardened, the adhesive 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.

[0035] The adhesive layer and the hard protective layer are both light-transmitting, so that the solar cell can normally receive light. The thickness of the adhesive 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 adhesive layer is resin, and the material of the hard protective layer is PET (polyethylene terephthalate).

[0036] By arranging the hard protective layer and the adhesive layer in the first protective layer, the solar cell can be embedded in the adhesive layer, the adhesive layer and the solar cell are integrated to improve the strength of the solar cell, and the hard protective layer can further protect the solar cell, thereby improving the stability and reliability of the curved photovoltaic tile.

[0037] In some embodiments, the material of the adhesive layer is resin.

[0038] In this embodiment, the adhesive layer is limited. Specifically, the material of the adhesive layer is resin, which is soft at room temperature and solidifies after heating. The solidified resin has high strength. When laminating the solar cell and the first protective layer, the solar cell is first pressed into the adhesive layer by pressure, and then the adhesive layer is heated to solidify, so that the solar cell and the adhesive layer are integrated. The solidified adhesive layer has high strength, thereby improving the strength of the solar cell and reducing the probability of hidden cracks in the solar cell.

[0039] In some embodiments, the surfaces of the solar cell, the first protective layer and the second protective layer are curved.

[0040] In this embodiment, the solar cell, the first protective layer and the second protective layer are further limited. Specifically, the surfaces of the solar cell, the first protective layer and the second protective layer are curved, so that the curved photovoltaic tile becomes a curved product. This not only improves the aesthetics of the curved photovoltaic tile, but also makes the curved photovoltaic tile applicable to more types of photovoltaic equipment.

[0041] In some embodiments, the first and second adhesive film layers are light-transmissive.

[0042] In this embodiment, the first and second adhesive film layers are limited. Specifically, the first and second adhesive film layers are both light-transmissive, and light can pass through the first and second adhesive film layers to the solar cell in sequence, so that the solar cell can generate electricity on both sides.

[0043] By setting the first and second adhesive film layers to be light-transmissive, light can pass through the first and second adhesive film layers, so that the solar cell can generate electricity on both sides.

[0044] Additional aspects and advantages of the application will become apparent from the following description, or will be learned by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0045] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description, taken in conjunction with the accompanying drawings, in which:

[0046] Figure 1 One of the exploded views of the curved photovoltaic tile of one embodiment of the present application is shown;

[0047] Figure 2 The second exploded view of the curved photovoltaic tile of one embodiment of the present application is shown.

[0048] Figure 3 Structure diagram of the first protective layer of one embodiment of the present application is shown;

[0049] Figure 4 Structure diagram of the first protective layer, the solar cell and the first adhesive film layer of one embodiment of the present application before one-time lamination is shown;

[0050] Figure 5 Structure diagram of the first protective layer, the solar cell and the first adhesive film layer of one embodiment of the present application after one-time lamination is shown;

[0051] Figure 6 Structure diagram of the second protective layer, the second adhesive film layer and the laminated assembly of one embodiment of the present application before two-time lamination is shown;

[0052] Figure 7 Flow diagram of one of the processing methods of the curved photovoltaic tile of one embodiment of the present application is shown;

[0053] Figure 8 Flow diagram of two of the processing methods of the curved photovoltaic tile of one embodiment of the present application is shown;

[0054] Figure 9 Flow diagram of three of the processing methods of the curved photovoltaic tile of one embodiment of the present application is shown;

[0055] Figure 10 Flow diagram of four of the processing methods of the curved photovoltaic tile of one embodiment of the present application is shown;

[0056] Figure 11 Flow diagram of five of the processing methods of the curved photovoltaic tile of one embodiment of the present application is shown.

[0057] Wherein, Figures 1 to 6 The correspondence between the reference signs and the component names is as follows:

[0058] 100 curved photovoltaic tile, 110 solar cell, 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

[0059] In order to enable the above-mentioned objects, features and advantages of the present application to be more clearly understood, the present application will be described in further detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0060] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, it will be recognized by one skilled in the art that the present application can be practiced without the specific details and, therefore, the scope of the present application is not limited to the details disclosed herein.

[0061] Reference will now be made to the following description Figures 1 to 11 to describe a processing method of a curved photovoltaic tile 100 and the curved photovoltaic tile 100 according to some embodiments of the present application.

[0062] In an embodiment according to the present application, as Figure 7 shown in FIG. 1, a flowchart of one of the processing methods of the curved photovoltaic tile according to an embodiment of the present application is shown. The processing method includes the following steps S102-S108:

[0063] S102: sequentially stack a first adhesive film layer, a solar cell piece, and a first protective layer;

[0064] S104: perform a first lamination on the first adhesive film layer, the solar cell piece, and the first protective layer to form a planar laminated assembly;

[0065] S106: sequentially stack a rigid curved second protective layer, a second adhesive film layer, and the laminated assembly;

[0066] S108: perform a second lamination on the second protective layer, the second adhesive film layer, and the laminated assembly to form a curved photovoltaic tile.

[0067] The processing method of the curved photovoltaic tile according to the present application is used to process a curved photovoltaic tile. The processing method processes the curved photovoltaic tile through a second lamination. First, a first adhesive film layer, a solar cell piece, and a first protective layer are sequentially stacked. Then, a first 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 lamination can be performed on the first adhesive film layer, the solar cell piece, and the first protective layer by a first laminator. During the first lamination, the first adhesive film layer is softened by heat and adhered to the solar cell piece, a portion of the first protective layer is softened by heat, the solar cell piece is embedded in the first protective layer under pressure, and the solar cell piece and the first protective layer are solidified as one to improve the strength of the solar cell piece.

[0068] Further, a rigid curved second protective layer, a second adhesive film layer, and the laminated assembly are sequentially stacked. Then, a second lamination is performed on the second protective layer, the second adhesive film layer, and the laminated assembly. During the second lamination, the second adhesive film layer is softened by heat and adhered to the first adhesive film layer in the laminated assembly, and the second protective layer is adhered to the laminated assembly through the second adhesive film layer to form a curved photovoltaic tile.

[0069] By adopting the processing method, the curved photovoltaic tile can be processed and formed by a secondary lamination method. Compared with a 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.

[0070] In one embodiment according to the present application, as shown in Figure 3 The first protective layer 120 includes a hard protective layer 121 and an adhesive layer 122, as shown in Figure 8 The processing method of the curved photovoltaic tile according to the embodiment of the present application is shown in the flowchart. The processing method includes the following steps S202-S210:

[0071] S202: The first adhesive film layer, the solar cell and the first protective layer are sequentially stacked;

[0072] S204: The solar cell is pressed into the adhesive layer to integrate the solar cell and the adhesive layer;

[0073] S206: The first adhesive film layer is bonded to the adhesive layer;

[0074] S208: The second protective layer of the rigid curved surface, the second adhesive film layer and the lamination assembly are sequentially stacked;

[0075] S210: The second protective layer, the second adhesive film layer and the lamination assembly are subjected to secondary lamination to form a curved photovoltaic tile.

[0076] 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 first adhesive film layer, the solar cell and the first protective layer are subjected to primary lamination, which is specifically as follows. First, the solar cell is pressed into the adhesive layer to integrate the solar cell and the adhesive layer, and then the first adhesive film layer is bonded to the adhesive layer.

[0077] Specifically, the adhesive layer is in a soft state structure at room temperature, which is easy for the solar cell to be embedded. After the solar cell is embedded in the adhesive layer under the action of pressure, the adhesive layer is solidified by heating, so that the solar cell and the adhesive layer are integrated, and 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 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.

[0078] By arranging the hard protective layer and the adhesive layer in the first protective layer, the solar cell can be embedded in the adhesive layer, the adhesive layer is solidified with the solar cell 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.

[0079] In an embodiment according to the present application, as shown in Fig. 3, a flowchart of a third processing method of the curved photovoltaic tile is shown. The processing method comprises the following steps S302-S312: Figure 9

[0080] S302: sequentially arrange the first adhesive film layer, the solar cell and the first protective layer;

[0081] S304: press the solar cell into the adhesive layer to solidify the solar cell with the adhesive layer;

[0082] S306: bond the first adhesive film layer to the adhesive layer to form a laminated assembly;

[0083] S308: sequentially arrange the second protective layer and the second adhesive film layer;

[0084] S310: place the first adhesive film layer in the laminated assembly towards the second adhesive film layer and place the laminated assembly above the second adhesive film layer;

[0085] S312: perform secondary lamination on the second protective layer, the second adhesive film layer and the laminated assembly to form the curved photovoltaic tile.

[0086] In this embodiment, the step of sequentially arranging the rigid curved second protective layer, the second adhesive film layer and the laminated assembly is specifically defined. First, the second protective layer and the second adhesive film layer are sequentially arranged, then the first adhesive film layer in the laminated assembly is placed towards 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 the curved photovoltaic tile. The first laminating machine can be a planar laminating machine.

[0087] In an embodiment according to the present application, the curved photovoltaic tile is laminated once by a first laminating machine, as shown in Fig. 4, a flowchart of a fourth processing method of the curved photovoltaic tile is shown. The step of laminating the first adhesive film layer, the solar cell and the first protective layer once comprises the following steps S402-S410: Figure 10

[0088] ​​S402: Control the heating device of the first laminator to heat the inside of the first laminator to a temperature range of 145-150°C.

[0089] S404: Control the vacuumizing device of the first laminator to perform vacuumizing operation on the inside of the first laminator, and the running time of the vacuumizing device of the first laminator is in a time range of 360-720s.

[0090] S406: Control the first laminator to perform first-time length lamination of the first adhesive film layer, the solar cell and the first protective layer at a first pressure, the first pressure being in a range of 20-30kPa, and the first time length being in a range of 30-60s.

[0091] S408: Control the first laminator to perform second-time length lamination of the first adhesive film layer, the solar cell and the first protective layer at a second pressure, the second pressure being in a range of 40-50kPa, and the second time length being in a range of 30-60s.

[0092] S410: Control the first laminator to perform third-time length lamination of the first adhesive film layer, the solar cell and the first protective layer at a third pressure, the third pressure being in a range of 95-100kPa, and the third time length being in a range of 30-40min.

[0093] 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, and the first adhesive film layer, the solar cell and the first protective layer are laminated once, which is specifically as follows. First, control the heating device of the first laminator to heat the inside of the first laminator to a temperature range of 145-150°C, then control the vacuumizing device of the first laminator to perform vacuumizing operation on the inside of the first laminator, and the running time of the vacuumizing device of the first laminator is in a time range of 360-720s. Then different pressures are used to laminate the first adhesive film layer, the solar cell and the first protective layer for different time lengths.

[0094] Specifically, first, control the first laminator to perform first-time length lamination of the first adhesive film layer, the solar cell and the first protective layer at a first pressure, the first pressure being in a range of 20-30kPa, and the first time length being in a range of 30-60s. Then, control the first laminator to perform second-time length lamination of the first adhesive film layer, the solar cell and the first protective layer at a second pressure, the second pressure being in a range of 40-50kPa, and the second time length being in a range of 30-60s. Then control the first laminator to perform third-time length lamination of the first adhesive film layer, the solar cell and the first protective layer at a third pressure, the third pressure being in a range of 95-100kPa, and the third time length being in a range of 30-40min.

[0095] By laminating the first adhesive film layer, the solar cell and the first protective layer for different lengths of time with 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 can be improved through the first protective layer.

[0096] In an embodiment according to the present application, the curved photovoltaic tile is further laminated twice by a second laminating machine, as shown in Figure 11 As shown in Fig. 5, the flowchart shows the fifth processing method of the curved photovoltaic tile according to the embodiment of the present application. The step of laminating the second protective layer, the second adhesive film layer and the laminated assembly twice includes the following steps S502-S518:

[0097] S502: Control the vacuumizing device of the second laminating machine to perform vacuumizing operation in the second laminating machine, and the operation time of the vacuumizing device of the second laminating machine is in the range of 10-12 minutes;

[0098] S504: Control the heating device of the second laminating machine to heat the second laminating machine to a temperature in the range of 80-90℃;

[0099] S506: Control the second laminating machine to laminate the second protective layer, the second adhesive film layer and the laminated assembly for a fourth time with a fourth pressure, and the fourth pressure is in the range of 99-100kPa, and the fourth time is in the range of 5-10 minutes;

[0100] S508: Control the heating device of the second laminating machine to heat the second laminating machine to a temperature in the range of 100-110℃;

[0101] S510: Control the second laminating machine to laminate the second protective layer, the second adhesive film layer and the laminated assembly for a fourth time with a fourth pressure;

[0102] S512: Control the heating device of the second laminating machine to heat the second laminating machine to a temperature in the range of 120-130℃;

[0103] S514: Control the second laminating machine to laminate the second protective layer, the second adhesive film layer and the laminated assembly for a fourth time with a fourth pressure;

[0104] S516: Control the heating device of the second laminating machine to heat the second laminating machine to a temperature in the range of 150-160℃;

[0105] S518: Control the second laminating machine to laminate the second protective layer, the second adhesive film layer and the laminated assembly for a fifth time with a fourth pressure, and the fifth time is in the range of 40-60 minutes.

[0106] In this embodiment, the processing method of the curved photovoltaic tile is further limited. The curved photovoltaic tile is further laminated by a second laminating machine for the second time, and the second laminating of the second protective layer, the second adhesive film layer and the laminated assembly is specifically as follows. First, 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 the time range of 10 min to 12 min. 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 laminating machine can be a silicone bag laminating machine.

[0107] Specifically, first, the heating device of the second laminating machine is controlled to heat the second laminating machine to a temperature range of 80℃ to 90℃, and the second laminating machine is controlled 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 is in the range of 99kPa to 100kPa, and the fourth time length is in the range of 5min to 10min. Then, the heating device of the second laminating machine is controlled to heat the second laminating machine to a temperature range of 100℃ to 110℃, and the second laminating machine is controlled to laminate the second protective layer, the second adhesive film layer and the laminated assembly for a fourth time length at a fourth pressure. After that, the heating device of the second laminating machine is controlled to heat the second laminating machine to a temperature range of 120℃ to 130℃, and the second laminating machine is controlled to laminate the second protective layer, the second adhesive film layer and the laminated assembly for a fourth time length at a fourth pressure. After that, the heating device of the second laminating machine is controlled to heat the second laminating machine to a temperature range of 150℃ to 160℃, and the second laminating machine is controlled 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 is in the range of 40min to 60min.

[0108] By laminating the laminated assembly, the second adhesive film layer and the second protective layer for different time lengths at different temperatures and different pressures, the laminated assembly, the second adhesive film layer and the second protective layer can form a whole to form the curved photovoltaic tile.

[0109] In an embodiment according to the present application, as Figure 1 、 Figure 2 、 Figure 4 and Figure 5As shown, the present application provides 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 adhesive film layer 141 located on the light receiving side 112 of the solar cell piece 110; a second protective layer 130, the second protective layer 130 being located on a side of the first adhesive film layer 141 away from the solar cell piece 110; and a second adhesive film layer 142 located between the second protective layer 130 and the first adhesive film layer 141.

[0110] The curved photovoltaic tile 100 provided by the present application comprises the solar cell piece 110, the first protective layer 120, the second protective layer 130, the first adhesive film layer 141 and the second adhesive film layer 142, wherein the solar cell piece 110 is used for receiving light and converting light energy into electrical energy, the first protective layer 120 and the second protective layer 130 are used for protecting the solar cell piece 110, and the first adhesive film layer 141 and the second adhesive film layer 142 are used for bonding 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 integrated as a whole.

[0111] Specifically, the solar cell piece 110 has the back light side 111 and the light receiving side 112 facing away from each other, and both the light receiving side 112 and the back light side 111 can receive light, so that the solar cell piece 110 can generate electricity on both sides. The solar cell piece 110 can be a crystalline silicon cell piece or a thin-film cell piece.

[0112] Further, the first protective layer 120 is light-transmissive, and 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 piece 110 is embedded in the first protective layer 120, a portion of the first protective layer 120 is located on the back light side 111 of the solar cell piece 110, and the solar cell piece 110 is integrated with the first protective layer 120, so that the strength of the solar cell piece 110 can be improved by the first protective layer 120, and the probability of hidden cracking of the solar cell piece 110 is reduced.

[0113] Further, the first adhesive film layer 141 is located on the light-receiving side 112 of the solar cell 110, and 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 on the side of the first adhesive film layer 141 away from the solar cell 110. 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, and further protects the solar cell 110 through the second protective layer 130. Specifically, the light-receiving side 112 of the solar cell 110 faces the second protective layer 130, and the second protective layer 130 is light-transmissive, so that light can pass through the second protective layer 130 to the light-receiving side 112, allowing the light-receiving side 112 to receive light. In this way, the technical effect of double-sided power generation of the solar cell 110 can be achieved. The material of the second protective layer 130 is tempered glass.

[0114] Further, in the processing of the curved photovoltaic tile 100, the first protective layer 120, the solar cell 110, and the first adhesive film layer 141 are first laminated once, the solar cell 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 110, and the first adhesive film layer 141 are first laminated into an integrated 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 to bond the second protective layer 130 to the laminated assembly 150 through the second adhesive film layer 142. Thus, the first protective layer 120, the solar cell 110, the first adhesive film layer 141, the second adhesive film layer 142, and the second protective layer 130 become an integrated whole to form the curved photovoltaic tile 100.

[0115] The materials of the first adhesive film layer 141 and the second adhesive film layer 142 can be EVA, POE, PVB, or organic silicone glue.

[0116] By providing 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 two-step lamination process. Compared with the traditional one-step lamination process, the bending resistance of the solar cell 110 is improved, the probability of hidden cracks in the solar cell 110 is reduced, and the stability and reliability of the curved photovoltaic tile 100 are improved.

[0117] In some embodiments, as shown in Figure 3 and Figure 5 The first protective layer 120 includes a hard protective layer 121 and an adhesive layer 122 located on the side of the hard protective layer 121 facing the first adhesive film layer 141. The solar cell 110 is embedded in the adhesive layer 122, and the first adhesive film layer 141 is bonded to the adhesive layer 122.

[0118] In this embodiment, the structure of the first protective layer 120 is defined. The first protective layer 120 includes a hard protective layer 121 and a bonding layer 122, wherein the hard protective layer 121 and the bonding layer 122 are stacked, and the solar cell 110 is embedded in the bonding layer 122. Specifically, the bonding layer 122 is in a soft state at room temperature, and the solar cell 110 is easily embedded. After the solar cell 110 is embedded in the bonding layer 122 under pressure, the bonding layer 122 is heated to solidify the bonding layer 122, so that the solar cell 110 and the bonding layer 122 are solidified as a whole, and the strength of the solar cell 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.

[0119] The bonding layer 122 and the hard protective layer 121 are both light-transmissive, so that the solar cell 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.

[0120] By providing the hard protective layer 121 and the bonding layer 122 in the first protective layer 120, the solar cell 110 can be embedded in the bonding layer 122, so that the bonding layer 122 and the solar cell 110 are solidified as a whole to improve the strength of the solar cell 110. In addition, the hard protective layer 121 can further protect the solar cell 110, and improve the stability and reliability of the curved photovoltaic tile 100.

[0121] In some embodiments, the material of the bonding layer 122 is resin.

[0122] In this embodiment, the bonding layer 122 is defined. Specifically, the material of the bonding layer 122 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 110 and the first protective layer 120 are laminated, the solar cell 110 is first pressed into the bonding layer 122 by pressure, and then the bonding layer 122 is heated to solidify the bonding layer 122, so that the solar cell 110 and the bonding layer 122 are solidified as a whole. The solidified bonding layer 122 has high strength, thereby improving the strength of the solar cell 110 and reducing the probability of hidden cracks of the solar cell 110.

[0123] In some embodiments, the surfaces of the solar cell 110, the first protective layer 120 and the second protective layer 130 are curved surfaces.

[0124] In this embodiment, the solar cell 110, the first protective layer 120 and the second protective layer 130 are further defined. Specifically, the surfaces of the solar cell 110, the first protective layer 120 and the second protective layer 130 are curved surfaces, 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.

[0125] In some embodiments, the first adhesive film layer 141 and the second adhesive film layer 142 are optically transparent.

[0126] In this embodiment, the first adhesive film layer 141 and the second adhesive film layer 142 are defined. Specifically, the first adhesive film layer 141 and the second adhesive film layer 142 are optically transparent, and light can pass through the first adhesive film layer 141 and the second adhesive film layer 142 to the solar cell 110, so that the solar cell 110 can generate electricity on both sides.

[0127] By setting the first adhesive film layer 141 and the second adhesive film layer 142 to be optically transparent, light can pass through the first adhesive film layer 141 and the second adhesive film layer 142, so that the solar cell 110 can generate electricity on both sides.

[0128] In a possible embodiment, as shown in Figure 1 and Figure 2 , the curved crystalline silicon photovoltaic product (i.e. the curved photovoltaic tile 100) is composed of a composite transparent backboard (i.e. the first protective layer 120), a power generation unit (i.e. the solar cell 110), a first encapsulating adhesive film (i.e. the first adhesive film layer 141), a second encapsulating adhesive film (i.e. the second adhesive film layer 142) and a curved tempered glass (i.e. the second protective layer 130), which are sequentially stacked to realize overall encapsulation by a two-step lamination process. The composite transparent backboard has the functions of bonding and protection, the first encapsulating adhesive film and the second encapsulating adhesive film can be EVA, POE, PVB or organic silicone adhesive, and the power generation unit is a crystalline silicon cell or a thin film cell.

[0129] As shown in Figure 3 , the composite transparent backboard is mainly composed of two parts, a transparent resin bonding layer (i.e. the bonding layer 122) and a transparent PET layer (i.e. the 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 0.2mm to 0.5mm. The transparent resin bonding layer is in a soft state at room temperature and will solidify after heating, which can realize the bonding function. The main material of the transparent PET layer is PET, and the thickness is in the range of 0.2mm to 0.7mm. The transparent PET layer provides protection.

[0130] The power generation unit is a crystalline silicon cell or a thin film cell. Due to the thinness and rigidity of the crystalline silicon cell and the thin film cell, the crystalline silicon cell and the thin film cell are prone to hidden cracks when applied to a curved surface photovoltaic product. The transparent resin bonding layer of the transparent composite back plate is made of a cured resin material. Compared with the traditional encapsulation adhesive film, the cured resin material has higher strength. During the lamination process of the power generation unit and the composite transparent back plate, the resin material of the transparent resin bonding layer softens under the combined action of temperature and pressure, and the cell is embedded in the transparent resin bonding layer. After the transparent resin bonding layer is cured, the cell and the composite transparent back plate are combined into a whole, which can better protect the cell 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.

[0131] During the first lamination process, a first encapsulation adhesive film needs to be applied on the front surface (i.e., the light-receiving side 112) of the power generation unit to encapsulate and protect the front surface of the power generation unit, because the transparent resin bonding layer of the transparent composite back plate cannot completely cover the front surface of the power generation unit. The first lamination process is as follows: first, lay the encapsulation adhesive film, the power generation unit and the composite transparent back plate in the order from bottom to top, then use a conventional planar laminator to laminate, the planar laminator has an upper cavity and a lower cavity, and the 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 back plate are laminated under the pressure difference between the upper cavity and the lower cavity, and the first lamination parameters are shown in Table 1. The first lamination includes a first lamination section, a second lamination section and a third lamination section, and the structure and process of the first lamination are shown in Figure 4 and Figure 5 .

[0132] After the first lamination is completed, the second lamination is performed. In order to achieve good filling and bonding effect, a second encapsulation adhesive film needs to be applied on the curved tempered glass during the second lamination process. The laying order is: the first lamination part (i.e., the laminated assembly), the second encapsulation adhesive film, and the curved tempered glass are stacked in the order of Figure 6 , and then placed into a silicone bag laminator for lamination. The silicone bag lamination parameters are shown in Table 2. The second lamination includes a first lamination section, a second lamination section, a third lamination section and a fourth lamination section. Through the two-step lamination process, the crystalline silicon curved surface photovoltaic product can realize the functions of anti-hidden crack and double-sided power generation, and improve the product yield.

[0133] Table 1

[0134]

[0135] Table 2

[0136]

[0137]

[0138] In the present application, the term "a plurality of" refers to two or more, unless otherwise expressly specified. The terms "mounting", "connected", "connecting", "fixed", and the like are to be interpreted broadly, for example, "connected" can be fixed connection, or detachable connection, or integrally connected; "connected" can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0139] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "a specific embodiment", and the like 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 the present application, the illustrative 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.

[0140] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method for processing curved photovoltaic tiles, characterized in that, The processing method of the curved photovoltaic tile includes: The first adhesive film layer, the solar cell, and the first protective layer are stacked sequentially. The first adhesive film layer, the solar cell, and the first protective layer are laminated once to form a planar laminated assembly; The second protective layer, the second adhesive film layer, and the lamination assembly of the rigid curved surface are stacked sequentially. The second protective layer, the second adhesive film layer, and the laminated assembly are subjected to secondary lamination to form the curved photovoltaic tile.

2. The processing method for curved photovoltaic tiles according to claim 1, characterized in that, The first protective layer includes a rigid protective layer and an adhesive layer. The specific steps of laminating the first adhesive film layer, the solar cell, and the first protective layer are as follows: The solar cell is pressed into the adhesive layer so that the solar cell and the adhesive layer are cured together. The first adhesive film layer is bonded to the adhesive layer.

3. The processing method for curved photovoltaic tiles according to claim 2, characterized in that, The process of sequentially stacking the second protective layer, the second adhesive film layer, and the lamination assembly on the rigid curved surface is specifically as follows: The second protective layer and the second adhesive film layer are stacked together; The first adhesive film layer in the laminating assembly is oriented toward the second adhesive film layer, and the laminating assembly is placed on top of the second adhesive film layer.

4. The processing method for curved photovoltaic tiles according to claim 1, characterized in that, The curved photovoltaic tile undergoes a first lamination process using a first laminator. Specifically, this first lamination of the first adhesive film layer, the solar cell, and the first protective layer involves: The heating device controlling the first laminator heats the interior of the first laminator to a temperature range of 145°C to 150°C; The vacuum pump of the first laminator is controlled to perform a vacuuming operation inside the first laminator. The operating time of the vacuum pump of the first laminator is within the range of 360s to 720s. The first laminator is controlled to laminate the first adhesive film layer, the solar cell and the first protective layer at a first pressure for a first duration, wherein the first pressure ranges from 20 kPa to 30 kPa and the first duration ranges from 30 s to 60 s. The first laminator is controlled to laminate the first adhesive film layer, the solar cell and the first protective layer with a second pressure for a second duration, wherein the second pressure ranges from 40 kPa to 50 kPa and the second duration ranges from 30 s to 60 s. The first laminator is controlled to laminate the first adhesive film layer, the solar cell and the first protective layer at a third pressure for a third duration, wherein the third pressure ranges from 95 kPa to 100 kPa and the third duration ranges from 30 min to 40 min.

5. The processing method for curved photovoltaic tiles according to claim 1, characterized in that, The curved photovoltaic tile is further laminated a second time using a second laminator. Specifically, this secondary lamination of the second protective layer, the second adhesive film layer, and the laminated assembly involves: The vacuum pump of the second laminator is controlled to perform a vacuuming operation inside the second laminator. The operation time of the vacuum pump of the second laminator is in the range of 10 minutes to 12 minutes. The heating device controlling the second laminator heats the interior of 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 adhesive film layer and the lamination assembly at a fourth pressure for a fourth duration, wherein the fourth pressure ranges from 99 kPa to 100 kPa and the fourth duration ranges from 5 min to 10 min. The heating device controlling the second laminator heats the interior of 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 adhesive film layer, and the lamination assembly at the fourth pressure for the fourth duration; The heating device controlling the second laminator heats the interior of 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 adhesive film layer, and the lamination assembly at the fourth pressure for the fourth duration; The heating device controlling the second laminator heats the interior of the second laminator to a temperature range of 150°C to 160°C; The second laminator is controlled to laminate the second protective layer, the second adhesive film layer and the lamination assembly at the fourth pressure for a fifth duration, the fifth duration being in the range of 40 min to 60 min.

6. A curved photovoltaic tile, characterized in that, include: A solar cell for converting light energy into electrical energy, the solar cell having a backlight side and a light-receiving side that are opposite to each other; A first protective layer, a portion of which is located on the back side of the solar cell; The first adhesive film layer is located on the light-receiving side of the solar cell; A second protective layer is located on the side of the first film layer away from the solar cell. The second adhesive film layer is located between the second protective layer and the first adhesive film layer.

7. The curved photovoltaic tile according to claim 6, characterized in that, The first protective layer includes: Hard protective layer; An adhesive layer is located on the side of the rigid protective layer facing the first adhesive film layer, the solar cell is embedded in the adhesive layer, and the first adhesive film layer is bonded to the adhesive layer.

8. The curved photovoltaic tile according to claim 7, characterized in that, The adhesive layer is made of resin.

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

10. The curved photovoltaic tile according to any one of claims 6 to 8, characterized in that, Both the first adhesive film layer and the second adhesive film layer are light-transmitting.

Images