Solar module and processing method therefor

Abstract

A solar module (100) and a processing method therefor are disclosed. The solar module (100) comprises: a solar cell (110) used for converting light energy into electric energy, the solar cell (110) having a first surface (111) and a second surface (112), wherein the first surface (111) can receive light; a first protective layer (120), the first surface (111) facing the first protective layer (120), wherein the first protective layer (120) can transmit light, and is provided with a plurality of arches protruding towards the solar cell (110); at least one adhesive strip (140) located between the arches and the solar cell (110), the adhesive strip (140) covering at least part of the corresponding arch; and a second protective layer (130), the second surface (112) facing the second protective layer (130).

Description

Solar module and method of processing solar module

[0001] Priority information

[0002] The present application claims priority to and the benefit of the filing date of Chinese Patent Application No. 202410732412.8, filed on June 6, 2024, in the State Intellectual Property Office of China, and which is incorporated herein by reference in its entirety. TECHNICAL FIELD

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

[0004] In the related art, the curved solar cell sheet has a poor flatness of the glass plate surface, so that in the lamination process, the cell sheet is unevenly stressed and heavily stressed at the peak position of the glass plate, and is prone to hidden cracks. 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 solar module.

[0007] A second object of the present application is to provide a method of processing a solar module.

[0008] To achieve at least one of the above objects, according to a first aspect of the present application, a solar module is provided, comprising: a solar cell sheet for converting light energy into electrical energy, the solar cell sheet having a first surface and a second surface, the first surface being capable of receiving light; a first protective layer, the first surface facing the first protective layer, the first protective layer being capable of transmitting light, the first protective layer having a plurality of arches protruding towards the solar cell sheet; at least one adhesive strip between the arches and the solar cell sheet, the adhesive strip covering at least a portion of the corresponding arch; a second protective layer, the second surface facing the second protective layer.

[0009] The solar module provided in the present application comprises a solar cell, a first protective layer and a second protective layer, wherein the solar module is used for receiving light and converting light energy into electric energy, and the first protective layer and the second protective layer are used for protecting the solar cell. Specifically, the solar cell has a first surface and a second surface which are away from each other. The first surface is capable of receiving light, and the first surface faces the first protective layer, and the first protective layer is located on one side of the first surface of the solar cell. The first protective layer is capable of transmitting light, and the light can pass through the first protective layer to the first surface, so that the solar cell can receive light and generate electricity. The second surface of the solar cell faces the second protective layer, and the second protective layer is located on one side of the second surface of the solar cell. By arranging the solar cell between the first protective layer and the second protective layer, the solar cell can be protected by the first protective layer and the second protective layer.

[0010] The solar cell can be a thin-film cell or a crystalline silicon cell, the material of the first protective layer is tempered glass, and the material of the second protective layer can be tempered glass or PET (polyethylene terephthalate).

[0011] Further, the first protective layer has a plurality of arches, and the arches protrude towards the solar cell. In this way, the first protective layer, the solar cell and the second protective layer can form a curved product after being laminated. Understandably, the arches of the first protective layer are prone to have uneven surfaces due to processing technology problems. The solar cell located at the arch position is subjected to a larger force during the lamination process. If the surface of the arch is uneven, the solar cell is prone to uneven force, which may cause the solar cell to have a hidden crack. In order to reduce the probability of hidden crack of the solar cell, at least one adhesive strip is arranged in the solar module to smooth the surface of the arch.

[0012] Specifically, the adhesive strip is located between the arch and the solar cell, and the adhesive strip covers at least a part of the corresponding arch. During the processing of the solar module, the adhesive strip is deformed after being heated and softened. The heated adhesive strip has a certain flowability, so that the flatness of the surface of the arch can be effectively adjusted by the adhesive strip. In this way, the solar cell can be prevented from being subjected to too large force at the arch, thereby reducing the probability of hidden crack of the solar cell. The adhesive strip is capable of transmitting light, and the light can pass through the first protective layer and the adhesive strip to the solar cell.

[0013] The material of the adhesive strip can be EVA (ethylene vinyl acetate polymer), POE (polyethylene), PVB (polyvinyl butyral) or organic silicone adhesive.

[0014] By arranging the adhesive strip in the solar module and arranging the adhesive strip between the arch and the solar cell, the flatness of the surface of the arch can be effectively adjusted by the adhesive strip, so that the stress of the solar cell at the arch can be prevented from being too large, thereby reducing the probability of hidden cracks of the solar cell.

[0015] According to the solar module described above, the solar module can further have the following distinguished technical features:

[0016] In some technical solutions, the plurality of arches includes at least one first arch and at least one second arch, the height of the first arch is lower than the height of any second arch, and the adhesive strip is located between the first arch and the solar cell.

[0017] In this technical solution, the arch is limited. The plurality of arches includes at least one first arch and at least one second arch, the height of the first arch is lower than the height of any second arch, and the first adhesive strip is located between the first arch and the solar cell. Understandably, due to process problems, the plurality of arches of the first protective layer are prone to have inconsistent heights. By arranging the adhesive strip between the first arch with a lower height and the solar cell, the height of the first arch can be compensated by the adhesive strip, and the sum of the heights of the first arch and the adhesive strip approaches the height of the second arch. This can make the stress area of the solar cell at each arch uniform during lamination, avoid uneven stress on the solar cell, and reduce the probability of hidden cracks of the solar cell.

[0018] In some technical solutions, the solar module further includes a first adhesive layer located between the solar cell and the first protective layer, and the adhesive strip is made of the same material as the first adhesive layer. In this technical solution, the structure of the solar module is further limited. The solar module further includes a first adhesive layer for bonding the solar cell to the first protective layer. Specifically, the first adhesive layer is located between the solar cell and the first protective layer, and the adhesive strip is located between the first adhesive layer and the first protective layer. In the position without the adhesive strip, the first adhesive layer bonds the first protective layer to the solar cell, and in the position with the adhesive strip, one side of the adhesive strip is bonded to the first adhesive layer, and the other side of the adhesive strip is bonded to the first protective layer. In this way, the first protective layer, the solar cell and the adhesive strip can be bonded into a whole by the first adhesive layer.

[0019] Further, the adhesive strip is made of the same material as the first adhesive layer, and during lamination of the product, the first adhesive layer and the adhesive strip are softened by heat, and since the materials of the two are the same, the adhesive strip can be integrated with the first adhesive layer.

[0020] Further, the first adhesive layer is light-transmissive, and light can pass through the first protective layer, the adhesive strip and the first adhesive layer to the solar cell in sequence.

[0021] The material of the first adhesive layer can be EVA, POE, PVB or organic silicone glue.

[0022] By arranging the first adhesive layer in the solar module, the solar cell can be adhered to the first protective layer through the first adhesive layer, and the adhesive strip and the first adhesive layer can be fused into one after being heated due to the same material of the first adhesive layer and the adhesive strip.

[0023] In some embodiments, the first adhesive layer comprises: a first adhesive film layer adhered to the first surface of the solar cell, the first adhesive film layer being light-transmissive; and a second adhesive film layer between the first adhesive film layer and the first protective layer, the adhesive strip being between the second adhesive film layer and the first protective layer, the second adhesive film layer being used to adhere the first protective layer to the first adhesive film layer, the adhesive strip being used to adhere a part of the first protective layer to the first adhesive film layer, and the second adhesive film layer being light-transmissive.

[0024] In this embodiment, the structure of the first adhesive layer is limited. The first adhesive layer comprises a first adhesive film layer and a second adhesive film layer. The first adhesive film layer is adhered to the first surface of the solar cell, and the second adhesive film layer is between the first adhesive film layer and the first protective layer. The adhesive strip is between the second adhesive film layer and the first protective layer. The solar cell, the adhesive strip and the first protective layer can be adhered into one through the first adhesive film layer and the second adhesive film layer. Specifically, during the processing of the solar module, the second protective layer, the solar cell and the first adhesive film layer are first laminated, and the second protective layer, the solar cell and the first adhesive film layer become one, forming a laminated assembly. Then, the laminated assembly, the second adhesive film layer, the adhesive strip and the first protective layer are laminated again, so that the laminated assembly is adhered to the first protective layer through the second adhesive film layer to form the solar module.

[0025] Further, the first adhesive film layer and the second adhesive film layer are both light-transmissive, so that light can pass through the first adhesive film layer and the second adhesive film layer to the solar cell.

[0026] The material of the first adhesive film layer and the second adhesive film layer can be EVA, POE, PVB or organic silicone glue.

[0027] By arranging the first adhesive film layer and the second adhesive film layer in the first adhesive layer, the solar module can be formed through two times of lamination, the strength of the solar cell is improved, the probability of hidden cracks in the solar module is reduced, and the yield of the product is improved.

[0028] In some embodiments, the solar module further comprises a second adhesive layer between the solar cell and the second protective layer, and the second adhesive layer is used to adhere the second protective layer to the solar cell.

[0029] In this embodiment, the structure of the solar module is further limited. The solar module further comprises a second adhesive layer, and the second adhesive layer is used to adhere the second protective layer to the solar cell. Specifically, the second adhesive layer is between the solar cell and the second protective layer, and the second adhesive layer is softened by heat during the lamination process of the product, so as to adhere the second protective layer to the solar cell.

[0030] In this embodiment, the structure of the solar module is further limited. The solar module further comprises a second adhesive layer, and the second adhesive layer is used to adhere the second protective layer to the solar cell. Specifically, the second adhesive layer is between the solar cell and the second protective layer, and the second adhesive layer is softened by heat during the lamination process of the product, so as to adhere the second protective layer to the solar cell.

[0031] In this embodiment, the structure of the solar module is further limited. The solar module further comprises a second adhesive layer, and the second adhesive layer is used to adhere the second protective layer to the solar cell. Specifically, the second adhesive layer is between the solar cell and the second protective layer, and the second adhesive layer is softened by heat during the lamination process of the product, so as to adhere the second protective layer to the solar cell.

[0032] In some embodiments, the second surface can receive light, and the second protective layer and the second adhesive layer can be transparent to light.

[0033] In this embodiment, the structure of the solar module is further limited. The solar module further comprises a second adhesive layer, and the second adhesive layer is used to adhere the second protective layer to the solar cell. Specifically, the second adhesive layer is between the solar cell and the second protective layer, and the second adhesive layer is softened by heat during the lamination process of the product, so as to adhere the second protective layer to the solar cell.

[0034] In this embodiment, the structure of the solar module is further limited. The solar module further comprises a second adhesive layer, and the second adhesive layer is used to adhere the second protective layer to the solar cell. Specifically, the second adhesive layer is between the solar cell and the second protective layer, and the second adhesive layer is softened by heat during the lamination process of the product, so as to adhere the second protective layer to the solar cell.

[0035] The second aspect of the present application also provides a processing method of a solar module, which is used to process the solar module provided in the first aspect of the present application. The processing method of the solar module comprises the following steps: sequentially stacking a second protective layer, a second adhesive layer, a solar cell and a first adhesive film; performing primary lamination on the second protective layer, the second adhesive layer, the solar cell and the first adhesive film to form a laminated assembly; sequentially stacking the laminated assembly, a second adhesive film and a first protective layer, and placing at least one adhesive strip between the arch of the first protective layer and the second adhesive film; and performing secondary lamination on the laminated assembly, the second adhesive film, the adhesive strip and the first protective layer to form the solar module.

[0036] The processing method of the solar module provided in the present application is used for processing the solar module. First, the second protective layer, the second adhesive layer, the solar cell and the first adhesive film layer are sequentially stacked, and then the second protective layer, the second adhesive layer, the solar cell and the first adhesive film layer are laminated once to form a laminated assembly. Specifically, in the process of laminating the second protective layer, the second adhesive layer, the solar cell and the first adhesive film layer once, the second adhesive layer and the first adhesive film layer are softened by heat, the first adhesive film layer is bonded to the solar cell, and the second adhesive layer integrally bonds the second protective layer and the solar module.

[0037] Further, the laminated assembly, the second adhesive film layer and the first protective layer are sequentially stacked, and at least one adhesive strip is placed between the arch of the first protective layer and the second adhesive film layer, and then the laminated assembly, the second adhesive film layer, the adhesive strip and the first protective layer are laminated twice to form the solar module. Specifically, the first protective layer has a plurality of arches protruding towards the solar cell, and in the process of laminating twice, the solar cell is bent along the surface of the first protective layer, and the solar cell at the arch position is subjected to a larger force. If the surface of the arch is uneven, it is easy to cause uneven force on the solar cell, which may cause the solar cell to crack. The present application sets the adhesive strip between the arch of the first protective layer and the second adhesive film layer, and in the process of laminating twice, the adhesive strip is deformed after being softened by heat, and the heated adhesive strip has a certain flowability, so that the flatness of the surface of the arch can be effectively adjusted by the adhesive strip. In the process of laminating twice, the laminated assembly is bonded to the first protective layer through the second adhesive film layer, the adhesive strip is softened and the corresponding arch surface is flattened, and the two surfaces of the adhesive strip are bonded to the corresponding arch and the second adhesive film layer, respectively.

[0038] The present application can flatten the surface of the arch by the adhesive strip, so as to prevent the solar cell from being subjected to too large force at the arch, thereby reducing the probability of cracking of the solar cell. The adhesive strip can transmit light, and the light can pass through the first protective layer and the adhesive strip to the solar cell.

[0039] In some technical solutions, the laminated assembly, the second adhesive film layer and the first protective layer are sequentially stacked, and at least one adhesive strip is placed between the arch of the first protective layer and the second adhesive film layer, specifically: the at least one adhesive strip is placed between the arch and the second adhesive film layer; 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.

[0040] In the technical solution, the step of placing the at least one adhesive strip between the arch and the second adhesive film is limited. First, the at least one adhesive strip is placed between the arch and the second adhesive film, then the first adhesive film in the laminated assembly is directed towards the second adhesive film, and the laminated assembly is placed above the second adhesive film. In this way, after the second lamination, the first protective layer is bonded to the first adhesive film in the laminated assembly through the second adhesive film, so that the first protective layer, the solar cell, the adhesive strip and the second protective layer become an integral whole to form the solar assembly.

[0041] In some technical solutions, the at least one adhesive strip is placed between the arch and the second adhesive film, specifically: measuring the height values of the multiple arches, and confirming that the height value less than the preset height value is the first arch, and the height value greater than or equal to the preset height value is the second arch; the at least one adhesive strip is placed between the first arch and the second adhesive film.

[0042] In the technical solution, the step of placing the at least one adhesive strip between the arch and the second adhesive film is limited. First, the height values of the multiple arches are measured, and the height value less than the preset height value is the first arch, and the height value greater than or equal to the preset height value is the second arch, then the at least one adhesive strip is placed between the first arch and the second adhesive film. Understandably, due to the processing process, the multiple arches of the first protective layer are prone to inconsistent height. By placing the adhesive strip between the first arch with lower height and the solar cell, the height of the first arch can be compensated by the adhesive strip, and the sum of the height of the first arch and the adhesive strip approaches the height of the second arch. In this way, the stress area of the solar cell at each arch during lamination can be balanced, avoiding uneven stress on the solar cell and reducing the probability of hidden cracks in the solar cell.

[0043] In some embodiments, the solar module is subjected to one-time lamination by the first laminator, and the second protective layer, the second adhesive layer, the solar cell and the first film layer are subjected to one-time lamination, specifically as follows. The heating device of the first laminator is controlled to heat the inside of the first laminator to a temperature range of 140-150°C. The vacuumizing device of the first laminator is controlled to perform vacuumizing operation on the inside of the first laminator, and the operation time of the vacuumizing device of the first laminator is in a time range of 360-600s. The first laminator is controlled to laminate the second protective layer, the second adhesive layer, the solar cell and the first film layer at a first pressure for a first time, and the first pressure is in a range of 20-30kPa, and the first time is in a range of 30-60s. The first laminator is controlled to laminate the second protective layer, the second adhesive layer, the solar cell and the first film layer at a second pressure for a second time, and the second pressure is in a range of 40-50kPa, and the second time is in a range of 30-60s. The first laminator is controlled to laminate the second protective layer, the second adhesive layer, the solar cell and the first film layer at a third pressure for a third time, and the third pressure is in a range of 60-100kPa, and the third time is in a range of 15-20min.

[0044] In this embodiment, the processing method of the solar module is further limited. The solar module is subjected to one-time lamination by the first laminator, and the second protective layer, the second adhesive layer, the solar cell and the first film layer are subjected to one-time lamination, specifically as follows. First, the heating device of the first laminator is controlled to heat the inside of the first laminator to a temperature range of 140-150°C. Then, the vacuumizing device of the first laminator is controlled to perform vacuumizing operation on the inside of the first laminator, and the operation time of the vacuumizing device of the first laminator is in a time range of 360-600s. Then, different pressures are used to laminate the second protective layer, the second adhesive layer, the solar cell and the first film layer for different times.

[0045] Specifically, first, the first laminator is controlled to laminate the second protective layer, the second adhesive layer, the solar cell and the first film layer at a first pressure for a first time, and the first pressure is in a range of 20-30kPa, and the first time is in a range of 30-60s. Then, the first laminator is controlled to laminate the second protective layer, the second adhesive layer, the solar cell and the first film layer at a second pressure for a second time, and the second pressure is in a range of 40-50kPa, and the second time is in a range of 30-60s. Then, the first laminator is controlled to laminate the second protective layer, the second adhesive layer, the solar cell and the first film layer at a third pressure for a third time, and the third pressure is in a range of 60-100kPa, and the third time is in a range of 15-20min.

[0046] By laminating the second protective layer, the second adhesive layer, the solar cell and the first adhesive film layer for different lengths of time under different pressures, the second protective layer, the second adhesive layer, the solar cell and the first adhesive film layer can be bonded into a whole to form a laminated assembly.

[0047] In some technical solutions, the solar module is subjected to secondary lamination by a second laminating machine, and the laminated assembly, the second adhesive film layer, the adhesive strip and the first protective layer are subjected to secondary lamination. Specifically, a vacuumizing device of the second laminating machine is controlled to perform a vacuumizing operation in the second laminating machine, the vacuumizing device of the second laminating machine is operated for a time length in a range of 10 min to 12 min, and the pressure in the second laminating machine is maintained in a range of -100 kPa to -99 kPa. A heating device of the second laminating machine is controlled to heat the second laminating machine to a temperature range of 80℃ to 90℃ and maintain for a time length of 5 min to 10 min. 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 maintain for a time length of 5 min to 10 min. 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 maintain for a time length of 5 min to 10 min. 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 maintain for a time length of 40 min to 60 min.

[0048] In this technical solution, the processing method of the solar module is further limited. The solar module is further subjected to secondary lamination by a second laminating machine. The laminated assembly, the second adhesive film layer, the adhesive strip and the first protective layer are subjected to secondary lamination. Specifically, a vacuumizing device of the second laminating machine is controlled to perform a vacuumizing operation in the second laminating machine, the vacuumizing device of the second laminating machine is operated for a time length in a range of 10 min to 12 min, and the pressure in the second laminating machine is maintained in a range of -100 kPa to -99 kPa. Then, the laminated assembly, the second adhesive film layer, the adhesive strip and the first protective layer are laminated for different lengths of time at different temperatures. The second laminating machine can be a silicone bag laminating machine.

[0049] 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 keep for 5-10 minutes, during which the pressure inside the second laminator is kept in a range of -100 kPa to -99 kPa. 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 keep for 5-10 minutes, during which the pressure inside the second laminator is kept in a range of -100 kPa to -99 kPa. After that, 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 keep for 5-10 minutes, during which the pressure inside the second laminator is kept in a range of -100 kPa to -99 kPa. After that, 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 keep for 5-10 minutes, during which the pressure inside the second laminator is kept in a range of -100 kPa to -99 kPa.

[0050] By arranging the adhesive strip between the arch and the second adhesive film layer, the surface of the arch can be flattened by the adhesive strip, so as to prevent the solar cell from being subjected to excessive stress at the arch, thereby reducing the probability of hidden cracks of the solar cell. The adhesive strip is light-transmissive, and light can pass through the first protective layer and the adhesive strip to the solar cell.

[0051] Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will become apparent to those skilled in the art upon examination of the following and / or can be learned by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0052] The foregoing and / or additional aspects and advantages of the application are achieved by providing what is described below, some of which will be apparent to those skilled in the art from the description that follows.

[0053] FIG. 1 shows one of the schematic diagrams of laminating a curved photovoltaic product in the related art;

[0054] FIG. 2 shows another of the schematic diagrams of laminating a curved photovoltaic product in the related art;

[0055] FIG. 3 shows a third of the schematic diagrams of laminating a curved photovoltaic product in the related art;

[0056] FIG. 4 shows one of the exploded views of a solar module according to an embodiment of the application;

[0057] FIG. 5 shows one of the schematic diagrams of a first protective plate and an adhesive strip according to an embodiment of the application;

[0058] FIG. 6 shows another of the schematic diagrams of a first protective plate and an adhesive strip according to an embodiment of the application;

[0059] Figure 7 shows a schematic view of the first protective layer and the adhesive tape of one embodiment of the present application;

[0060] Figure 8 shows an exploded view of the laminated assembly of one embodiment of the present application;

[0061] Figure 9 shows a schematic view of the structure of the laminated assembly of one embodiment of the present application;

[0062] Figure 10 shows an exploded view of the solar module of one embodiment of the present application;

[0063] Figure 11 shows a flowchart of the processing method of the solar module of one embodiment of the present application;

[0064] Figure 12 shows a flowchart of the processing method of the solar module of one embodiment of the present application;

[0065] Figure 13 shows a flowchart of the processing method of the solar module of one embodiment of the present application;

[0066] Figure 14 shows a flowchart of the processing method of the solar module of one embodiment of the present application;

[0067] Figure 15 shows a flowchart of the processing method of the solar module of one embodiment of the present application.

[0068] In Figures 1-3, the correspondence between the reference signs and the component names is as follows:

[0069] 1' - silicone bag, 2' - silicone plate, 3' - curved photovoltaic product.

[0070] In Figures 4-10, the correspondence between the reference signs and the component names is as follows:

[0071] 100 - solar module, 110 - solar cell, 111 - first surface, 112 - second surface, 120 - first protective layer, 121 - arch, 122 - first arch, 123 - second arch, 130 - second protective layer, 140 - adhesive tape, 150 - first adhesive layer, 151 - first adhesive film layer, 152 - second adhesive film layer, 160 - second adhesive layer, 170 - laminated assembly. DETAILED DESCRIPTION

[0072] The embodiments of the present application are described in detail below with reference to the accompanying drawings, in which the same or similar components have the same or similar reference numbers throughout. The embodiments described below are examples and are intended to explain the present application, and should not be understood as limiting the present application.

[0073] The following disclosure provides many different embodiments, or examples, for implementing different structures of the present application. For purposes of simplicity of the present application, the following description is broken into sections. Of course, these sections in their entirety are present to provide a disclosure of the present application. The section titles and subdivisions used herein are not intended to be limiting, but are instead used for purposes of organization. The present application can refer to different examples by varying reference numbers and / or varying reference letters. Such varying reference numbers and / or varying reference letters are used for purposes of simplicity and clarity, and are not intended to indicate a relationship between the various embodiments and / or aspects discussed. Furthermore, the present application provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize that other processes can be used and / or other materials can be employed.

[0074] The solar module 100, the photovoltaic device and the processing method of the solar module according to some embodiments of the present application are described below with reference to FIGS. 4-15.

[0075] In one embodiment of the present application, as shown in FIG. 4, the present application provides a solar module 100, comprising: a solar cell 110 for converting light energy into electrical energy, the solar cell 110 having a first surface 111 and a second surface 112, the first surface 111 being capable of receiving light; a first protective layer 120, the first surface 111 facing the first protective layer 120, the first protective layer 120 being capable of transmitting light, the first protective layer 120 having a plurality of arches 121 protruding towards the solar cell 110; at least one adhesive strip 140 located between the arches 121 and the solar cell 110, the adhesive strip 140 covering at least a portion of the corresponding arch 121; and a second protective layer 130, the second surface 112 facing the second protective layer 130.

[0076] The solar module 100 according to the present application comprises the solar cell 110, the first protective layer 120 and the second protective layer 130, wherein the solar module 100 is used for receiving light and converting light energy into electrical energy, and the first protective layer 120 and the second protective layer 130 are used for protecting the solar cell 110. Specifically, the solar cell 110 has the first surface 111 and the second surface 112 facing away from each other. The first surface 111 is capable of receiving light, and the first surface 111 faces the first protective layer 120, which is located on one side of the first surface 111 of the solar cell 110. The first protective layer 120 is capable of transmitting light, and the light can pass through the first protective layer 120 to the first surface 111, so that the solar cell 110 can receive light and generate electricity. The second surface 112 of the solar cell 110 faces the second protective layer 130, which is located on one side of the second surface 112 of the solar cell 110. By arranging the solar cell 110 between the first protective layer 120 and the second protective layer 130, the solar cell 110 can be protected by the first protective layer 120 and the second protective layer 130.

[0077] The solar cell sheet 110 can be a thin-film cell sheet or a crystalline silicon cell sheet, the material of the first protective layer 120 is tempered glass, and the material of the second protective layer 130 can be tempered glass or PET.

[0078] Further, as shown in FIG. 4, the first protective layer 120 has a plurality of arches 121, the arches 121 protrude towards the solar cell sheet 110, so that the first protective layer 120, the solar cell sheet 110 and the second protective layer 130 form a curved product after being laminated. Understandably, the arches 121 of the first protective layer 120 are prone to surface unevenness due to processing technology problems, and the solar cell sheet 110 at the arch 121 part is subjected to greater stress during the lamination process. If the surface of the arch 121 is uneven, it is easy to cause uneven stress on the solar cell sheet 110, which may further cause the solar cell sheet 110 to have a hidden crack. In order to reduce the probability of hidden cracks of the solar cell sheet 110, at least one adhesive strip 140 is arranged in the solar module 100, and the surface of the arch 121 is flattened by the adhesive strip 140. FIGS. 5 and 6 show cross-sectional views of the first protective layer 120.

[0079] Specifically, the adhesive strip 140 is located between the arch 121 and the solar cell sheet 110, and the adhesive strip 140 covers at least a part of the corresponding arch 121. During the processing of the solar module 100, the adhesive strip 140 is deformed after being heated and softened. The heated adhesive strip 140 has a certain flowability, so that the flatness of the surface of the arch 121 can be effectively adjusted by the adhesive strip 140. In this way, the solar cell sheet 110 can be prevented from being subjected to excessive stress at the arch 121, thereby reducing the probability of hidden cracks of the solar cell sheet 110. The adhesive strip 140 is transparent, and light can pass through the first protective layer 120 and the adhesive strip 140 to the solar cell sheet 110.

[0080] The material of the adhesive strip 140 can be EVA, POE, PVB or organic silicone glue.

[0081] By arranging the adhesive strip 140 in the solar module 100 and arranging the adhesive strip 140 between the arch 121 and the solar cell sheet 110, the flatness of the surface of the arch 121 can be effectively adjusted by the adhesive strip 140. In this way, the solar cell sheet 110 can be prevented from being subjected to excessive stress at the arch 121, thereby reducing the probability of hidden cracks of the solar cell sheet 110.

[0082] In some embodiments, as shown in FIG. 7, the plurality of arches 121 comprises at least one first arch 122 and at least one second arch 123, wherein the height of the first arch 122 is lower than the height of any second arch 123, and the adhesive strip 140 is located between the first arch 122 and the solar cell 110.

[0083] In this embodiment, the arches 121 are defined. The plurality of arches 121 comprises at least one first arch 122 and at least one second arch 123, wherein the height of the first arch 122 is lower than the height of any second arch 123, and the first adhesive strip 140 is located between the first arch 122 and the solar cell 110. Understandably, due to the processing technology, the plurality of arches 121 of the first protective layer 120 is prone to have inconsistent heights. By setting the adhesive strip 140 between the first arch 122 with lower height and the solar cell 110, the height of the first arch 122 can be compensated by the adhesive strip 140, and the sum of the height of the first arch 122 and the adhesive strip 140 approaches the height of the second arch 123. In this way, the stress area of the solar cell 110 at each arch 121 can be balanced during the lamination process, avoiding uneven stress on the solar cell 110 and reducing the probability of hidden cracks in the solar cell 110.

[0084] In some embodiments, as shown in FIG. 4, the solar module 100 further comprises a first adhesive layer 150 located between the solar cell 110 and the first protective layer 120, and the adhesive strip 140 and the first adhesive layer 150 are made of the same material. In this embodiment, the structure of the solar module 100 is further defined. The solar module further comprises a first adhesive layer 150 for bonding the solar cell 110 to the first protective layer 120. Specifically, the first adhesive layer 150 is located between the solar cell 110 and the first protective layer 120, and the adhesive strip 140 is located between the first adhesive layer 150 and the first protective layer 120. In the position without the adhesive strip 140, the first adhesive layer 150 bonds the first protective layer 120 to the solar cell 110, and in the position with the adhesive strip 140, one side of the adhesive strip 140 is bonded to the first adhesive layer 150, and the other side of the adhesive strip 140 is bonded to the first protective layer 120. In this way, the first protective layer 120, the solar cell 110 and the adhesive strip 140 can be bonded into a whole by the first adhesive layer 150.

[0085] Further, the adhesive strip 140 and the first adhesive layer 150 are made of the same material, and during the lamination process of the product, the first adhesive layer 150 and the adhesive strip 140 are softened by heat, and since the materials of the two are the same, the adhesive strip 140 can be integrated with the first adhesive layer 150.

[0086] Further, the first adhesive layer 150 is light-transmissive, and light can pass through the first protective layer 120, the adhesive strip 140 and the first adhesive layer 150 in sequence to the solar cell 110.

[0087] In the embodiment, the material of the first adhesive layer 150 can be EVA, POE, PVB or organic silicone glue.

[0088] By arranging the first adhesive layer 150 in the solar module 100, the solar cell 110 can be adhered to the first protective layer 120 through the first adhesive layer 150, and the adhesive strip 140 and the first adhesive layer 150 can be fused into one after being heated due to the same material of the first adhesive layer 150 and the adhesive strip 140.

[0089] In some embodiments, as shown in FIG. 4, the first adhesive layer 150 includes a first adhesive film layer 151 adhered to the first surface 111 of the solar cell 110, and the first adhesive film layer 151 is light-transmissive; a second adhesive film layer 152 located between the first adhesive film layer 151 and the first protective layer 120, and the adhesive strip 140 is located between the second adhesive film layer 152 and the first protective layer 120, the second adhesive film layer 152 is used to adhere the first protective layer 120 to the first adhesive film layer 151, the adhesive strip 140 can adhere a part of the first protective layer 120 to the first adhesive film layer 151, and the second adhesive film layer 152 is light-transmissive.

[0090] In the embodiment, the structure of the first adhesive layer 150 is limited. The first adhesive layer 150 includes the first adhesive film layer 151 and the second adhesive film layer 152, wherein the first adhesive film layer 151 is adhered to the first surface 111 of the solar cell 110, the second adhesive film layer 152 is located between the first adhesive film layer 151 and the first protective layer 120, and the adhesive strip 140 is located between the second adhesive film layer 152 and the first protective layer 120, and the solar cell 110, the adhesive strip 140 and the first protective layer 120 can be adhered into one through the first adhesive film layer 151 and the second adhesive film layer 152. Specifically, as shown in FIGS. 8 and 9, when the solar module 100 is processed, the second protective layer 130, the solar cell 110 and the first adhesive film layer 151 are first laminated, and the second protective layer 130, the solar cell 110 and the first adhesive film layer 151 become one, forming a laminated assembly 170. As shown in FIG. 10, then the laminated assembly 170, the second adhesive film layer 152, the adhesive strip 140 and the first protective layer 120 are laminated again, so that the laminated assembly 170 is adhered to the first protective layer 120 through the second adhesive film layer 152 to form the solar module 100.

[0091] Further, the first adhesive film layer 151 and the second adhesive film layer 152 are both light-transmissive, so that light can pass through the first adhesive film layer 151 and the second adhesive film layer 152 to the solar cell 110.

[0092] The material of the first adhesive film layer 151 and the second adhesive film layer 152 can be EVA, POE, PVB or organic silicone glue.

[0093] By arranging the first adhesive film layer 151 and the second adhesive film layer 152 in the first adhesive layer 150, the solar module 100 can be formed by two times of lamination, the strength of the solar cell sheet 110 is improved, the probability of hidden cracks of the solar module 100 is reduced, and the yield of the product is improved.

[0094] In some embodiments, the solar module 100 further comprises a second adhesive layer 160 arranged between the solar cell sheet 110 and the second protective layer 130, and the second adhesive layer 160 is used to adhere the second protective layer 130 to the solar cell sheet 110.

[0095] In this embodiment, the structure of the solar module 100 is further limited. The solar module 100 further comprises a second adhesive layer 160, and the second adhesive layer 160 is used to adhere the second protective layer 130 to the solar cell sheet 110. Specifically, the second adhesive layer 160 is arranged between the solar cell sheet 110 and the second protective layer 130, and in the process of laminating the product, the second adhesive layer 160 is softened by heat to adhere the second protective layer 130 to the solar cell sheet 110.

[0096] The material of the second adhesive layer 160 can be EVA, POE, PVB or organic silicone glue.

[0097] By arranging the second adhesive layer 160 in the solar module 100, the second protective layer 130 can be adhered to the solar cell sheet 110 through the second adhesive layer 160.

[0098] In some embodiments, the second surface 112 can receive light, and the second protective layer 130 and the second adhesive layer 160 can transmit light.

[0099] In this embodiment, the solar cell sheet 110, the second protective layer 130 and the second adhesive layer 160 are further limited. Specifically, the second surface 112 of the solar cell sheet 110 can receive light, and the second protective layer 130 and the second adhesive layer 160 can transmit light. The light can pass through the second protective layer 130 and the second adhesive layer 160, and then be transmitted to the second surface 112 of the solar cell sheet 110. Since the second surface 112 of the solar cell sheet 110 can receive light, the solar cell sheet 110 can realize double-sided power generation.

[0100] By setting the second protective layer 130 and the second adhesive layer 160 to be light-transmissive and setting the second surface 112 of the solar cell 110 to be capable of receiving light, the solar cell 110 can be enabled to generate electricity on both sides, and the solar module 100 becomes a double-sided electricity generation product.

[0101] In one possible embodiment, as shown in FIG. 4, the curved photovoltaic product (i.e., the solar module 100) includes, in order, a back cover plate (i.e., the second protective layer 130), a first encapsulating adhesive film (i.e., the second adhesive layer 160), a power generation unit (i.e., the solar cell 110), a second encapsulating adhesive film (i.e., the first adhesive film layer 151), a third encapsulating adhesive film (i.e., the second adhesive film layer 152), an adhesive film strip (i.e., the adhesive strip 140), and a curved tempered glass (i.e., the first protective layer 120), and the layers are adhered and formed by the first, second, and third encapsulating adhesive films. The back cover plate can be tempered glass or other transparent polymer materials, and has certain weather resistance. The first, second, and third encapsulating adhesive films can be EVA, POE, PVB, silicone adhesive, or the like. The power generation unit is a thin film or a crystalline silicon cell. The adhesive film strip is made of the same material as the first, second, and third encapsulating adhesive films, and is placed at the peak (i.e., the arch 121) of the curved tempered glass.

[0102] Most of the curved photovoltaic products in the related art use a vacuum bag lamination process. During the lamination process, under vacuum negative pressure, the silicone bag applies pressure to the product being laminated. As shown in FIG. 1, the silicone bag 1' includes two silicone plates 2'. As shown in FIG. 2, during the vacuum process, the upper silicone plate 2' first contacts the peak position A and the peak position B of the curved photovoltaic product 3'. At this time, the upper silicone plate 2' has not reached the valley C point. As the vacuum force increases, the upper silicone plate 2' continues to move under the action of the vacuum force, and the moving direction is shown by the arrow in the figure. As shown in FIG. 3, as the vacuum force increases, the upper silicone plate 2' reaches the valley C point under the action of the vacuum force and its own elastic deformation. Assuming that the force of the silicone bag 1' is F when the vacuum degree reaches -100 kPa, and the force generated by the deformation of the silicone plate 2' is F1, then the force on the peak position A and the peak position B is F+F1, and the force on the valley position C is F-F1. Therefore, the force on the peak is greater than that on the valley.

[0103] The current market tempered glass, affected by the thickness of the glass itself, the tempering process and the bending process, the flatness of the local surface of the glass is poor. In the process of pressing the power generation unit and the curved tempered glass, if the surface of the curved tempered glass is not flat, it is easy to cause the power generation unit to crack. Since the power generation unit at the wave peak is under greater stress, the hidden crack often occurs in the power generation unit at the wave peak position. As shown in FIG. 3, after adding a small piece of adhesive film at the wave peak position, the flatness of the curved tempered glass can be effectively adjusted due to the fluidity of the small piece of adhesive film, thereby reducing the hidden crack in the lamination process.

[0104] The arch height between different wave peaks of the curved tempered glass also has differences. In the lamination process, adjustments need to be made at the known abnormal wave peak positions. As shown in FIG. 7, A1, A2, B1, B2, C1 and C2 are all the vertices of the wave peaks. It is assumed that the arch height at A1 and A2 is lower than that at B1 and B2 and C1 and C2. After adding a small piece of adhesive film at the positions of A1 and A2, the arch height at A1 and A2 can be increased, so that the arch height of the curved glass is uniform. By adding a small piece of adhesive film at the abnormal wave peak position, the thickness of the small piece of adhesive film ranges from 0.4 mm to 0.8 mm, and the width of the small piece of adhesive film ranges from 90 mm to 160 mm (the width is related to the arc length of the wave peak of the curved tempered glass and the size of the power generation unit). The height of the abnormal wave peak can be adjusted to make the arch height of each wave peak consistent, effectively reducing the hidden crack problem caused by the inconsistent arch height of the wave peak. Moreover, the small piece of adhesive film itself has a certain elasticity and can also buffer the pressure acting on the power generation unit to a certain extent, thereby reducing the probability of hidden cracks.

[0105] The power generation unit can be a crystalline silicon cell. Since the crystalline silicon cell is thin and brittle, direct lamination on the curved substrate can easily cause hidden cracks and broken pieces. The present application adopts a secondary lamination method. First, the back cover plate, the first encapsulation adhesive film, the power generation unit and the second encapsulation adhesive film are encapsulated together by primary lamination. After encapsulation, each layer of material has a certain protective effect on the power generation unit. The structure of each layer after primary lamination is shown in FIGS. 8 and 9. After primary lamination is completed, secondary lamination is performed. The secondary lamination stacks the laminated part (laminated assembly 170) after primary lamination, the second encapsulation adhesive film, the small piece of adhesive film and the curved tempered glass. The silicon rubber bag laminator is used for lamination. The structure of each layer after secondary lamination is shown in FIG. 10.

[0106] The primary lamination uses a flat laminator (i.e., a first laminator). The primary lamination uses a conventional laminated part. The product after lamination is in a flat state. The flat laminator has an upper cavity and a lower cavity. There is a pressure difference between the upper cavity and the lower cavity. The pressure in the lower cavity is -100 kPa. The pressure in the upper cavity is shown in Table 1. The back cover plate, the first encapsulation adhesive film, the power generation unit and the second encapsulation adhesive film are subjected to primary lamination under the pressure difference between the upper cavity and the lower cavity. The lamination parameters are shown in Table 1. The secondary lamination uses a silicon rubber bag laminator dedicated for special-shaped products. The lamination parameters are shown in Table 2.

[0107] Table 1

[0108] Table 2

[0109] A third aspect of the present application further provides a processing method of a solar module. The processing method is used for the solar module as described in the above embodiments. As shown in Fig. 11, Fig. 11 shows one of flow diagrams of the processing method of the solar module according to the embodiments of the present application. The processing method comprises the following steps S102-S108.

[0110] S102: sequentially stack a second protective layer, a second adhesive layer, a solar cell and a first adhesive film layer;

[0111] S104: perform one-time lamination on the second protective layer, the second adhesive layer, the solar cell and the first adhesive film layer to form a laminated assembly;

[0112] S106: sequentially stack the laminated assembly, a second adhesive film layer and a first protective layer, and place at least one adhesive strip between the arch of the first protective layer and the second adhesive film layer;

[0113] S108: perform two-time lamination on the laminated assembly, the second adhesive film layer, the adhesive strip and the first protective layer to form a solar module.

[0114] The processing method of the solar module according to the present application is used for processing a solar module. First, a second protective layer, a second adhesive layer, a solar cell and a first adhesive film layer are sequentially stacked. Then, one-time lamination is performed on the second protective layer, the second adhesive layer, the solar cell and the first adhesive film layer to form a laminated assembly. Specifically, during the one-time lamination on the second protective layer, the second adhesive layer, the solar cell and the first adhesive film layer, the second adhesive layer and the first adhesive film layer are softened by heat, the first adhesive film layer is adhered to the solar cell, and the second adhesive layer adheres the second protective layer and the solar module as a whole.

[0115] Further, the laminated assembly, the second adhesive film layer and the first protective layer are sequentially stacked, and at least one adhesive strip is placed between the arches of the first protective layer and the second adhesive film layer, and then the laminated assembly, the second adhesive film layer, the adhesive strip and the first protective layer are subjected to secondary lamination to form the solar module. Specifically, the first protective layer has a plurality of arches protruding towards the solar cell pieces, and in the process of secondary lamination, the solar cell pieces are bent along with the surface of the first protective layer, and the solar cell pieces located at the arch positions are subjected to greater stress. If the surface of the arch is uneven, it is easy to cause uneven stress on the solar cell pieces, which may further cause the solar cell pieces to crack. In the present application, the adhesive strip is arranged between the arches of the first protective layer and the second adhesive film layer, and in the process of secondary lamination, the adhesive strip is softened and deformed after being heated, and the heated adhesive strip has a certain flowability, so that the flatness of the surface of the arch can be effectively adjusted by the adhesive strip. In the process of secondary lamination, the laminated assembly is bonded to the first protective layer through the second adhesive film layer, and the adhesive strip is softened and flattened on the corresponding arch surface, and the two surfaces of the adhesive strip are bonded to the corresponding arch and the second adhesive film layer, respectively.

[0116] In the present application, the adhesive strip is arranged between the arches and the second adhesive film layer, so that the surface of the arch can be flattened by the adhesive strip to prevent the solar cell pieces from being subjected to excessive stress at the arches, thereby reducing the probability of cracking of the solar cell pieces. The adhesive strip is light-transmitting, and light can pass through the first protective layer and the adhesive strip to the solar cell pieces.

[0117] In an embodiment according to the present application, as shown in FIG. 12, a flowchart of a processing method of a solar module according to an embodiment of the present application is shown. The processing method includes the following steps S202 to S210:

[0118] S202: sequentially stacking the second protective layer, the second adhesive layer, the solar cell pieces and the first adhesive film layer;

[0119] S204: subjecting the second protective layer, the second adhesive layer, the solar cell pieces and the first adhesive film layer to primary lamination to form a laminated assembly;

[0120] S206: placing at least one adhesive strip between the arches and the second adhesive film layer;

[0121] S208: placing the first adhesive film layer in the laminated assembly towards the second adhesive film layer, and placing the laminated assembly above the second adhesive film layer;

[0122] S210: subjecting the laminated assembly, the second adhesive film layer, the adhesive strip and the first protective layer to secondary lamination to form the solar module.

[0123] In this embodiment, the step of stacking the laminated assembly, the second adhesive film layer and the first protective layer in sequence and placing the at least one adhesive strip between the first protective layer and the second adhesive film layer is limited. First, the at least one adhesive strip is placed between the first protective layer and the second adhesive film layer, 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 the second lamination, the first 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 adhesive strip and the second protective layer become an integral whole, to form the solar module.

[0124] In an embodiment according to the present application, as shown in Fig. 13, a flowchart III of a processing method of a solar module according to an embodiment of the present application is shown. The processing method includes the following steps S302-S312:

[0125] S302: stacking a second protective layer, a second adhesive layer, a solar cell and a first adhesive film layer in sequence;

[0126] S304: laminating the second protective layer, the second adhesive layer, the solar cell and the first adhesive film layer once to form a laminated assembly;

[0127] S306: measuring the height values of the plurality of arches, and identifying the first arches with height values less than a preset height value, and identifying the second arches with height values greater than or equal to the preset height value;

[0128] S308: placing at least one adhesive strip between the first arches and the second adhesive film layer;

[0129] S310: directing the first adhesive film layer in the laminated assembly towards the second adhesive film layer, and placing the laminated assembly above the second adhesive film layer;

[0130] S312: laminating the laminated assembly, the second adhesive film layer, the adhesive strip and the first protective layer twice to form a solar module.

[0131] In this embodiment, the step of placing at least one adhesive strip between the arches and the second adhesive film layer is defined. First, the height values of the arches are measured, and the arches with height values less than a preset height value are determined as first arches, and the arches with height values greater than or equal to the preset height value are determined as second arches, and then at least one adhesive strip is placed between the first arches and the second adhesive film layer. Understandably, due to process problems, the heights of the first protective layer arches are prone to be inconsistent. By placing the adhesive strip between the first arches with lower heights and the solar cell piece, the height of the first arch can be compensated by the adhesive strip, and the sum of the heights of the first arch and the adhesive strip approaches the height of the second arch. This can make the stress area of the solar cell piece balanced at each arch during lamination, avoid uneven stress on the solar cell piece, and reduce the probability of hidden cracks in the solar cell piece.

[0132] In an embodiment according to the present application, the solar module is laminated by a first laminator once, as shown in Figure 14, which shows a fourth flowchart of the processing method of the solar module according to the embodiment of the present application. The step of laminating the second protective layer, the second adhesive layer, the solar cell piece and the first adhesive film layer once includes the following steps S402-S410:

[0133] S402: control the heating device of the first laminator to heat the first laminator to a temperature range of 140-150°C;

[0134] S404: control the vacuum pump of the first laminator to perform vacuum pumping operation in the first laminator, and the operation time of the vacuum pump of the first laminator is in the range of 360-600s;

[0135] S406: control the first laminator to laminate the second protective layer, the second adhesive layer, the solar cell piece and the first adhesive film layer for a first time at a first pressure, the first pressure is in the range of 20-30kPa, and the first time is in the range of 30-60s;

[0136] S408: control the first laminator to laminate the second protective layer, the second adhesive layer, the solar cell piece and the first adhesive film layer for a second time at a second pressure, the second pressure is in the range of 40-50kPa, and the second time is in the range of 30-60s;

[0137] S410: control the first laminator to laminate the second protective layer, the second adhesive layer, the solar cell piece and the first adhesive film layer for a third time at a third pressure, the third pressure is in the range of 60-100kPa, and the third time is in the range of 15-20min.

[0138] In this embodiment, the processing method of the solar module is further limited. The solar module is once laminated by a first laminator, and the first laminator laminates the second protective layer, the second adhesive layer, the solar cell and the first adhesive film layer in one step. First, control the heating device of the first laminator to heat the first laminator to a temperature range of 140-150°C, then control the vacuum pump of the first laminator to perform vacuum pumping operation in the first laminator, and the running time of the vacuum pump of the first laminator is in the time range of 360-600s. Then, the second protective layer, the second adhesive layer, the solar cell and the first adhesive film layer are laminated for different lengths of time with different pressures. The first laminator can be a silicone bag first laminator.

[0139] Specifically, first, control the first laminator to laminate the second protective layer, the second adhesive layer, the solar cell and the first adhesive film layer for a first length of time at a first pressure, the first pressure is in the range of 20-30kPa, and the first length of time is in the range of 30-60s. Then, control the first laminator to laminate the second protective layer, the second adhesive layer, the solar cell and the first adhesive film layer for a second length of time at a second pressure, the second pressure is in the range of 40-50kPa, and the second length of time is in the range of 30-60s. Then, control the first laminator to laminate the second protective layer, the second adhesive layer, the solar cell and the first adhesive film layer for a third length of time at a third pressure, the third pressure is in the range of 60-100kPa, and the third length of time is in the range of 15-20min.

[0140] By laminating the second protective layer, the second adhesive layer, the solar cell and the first adhesive film layer for different lengths of time with different pressures, the second protective layer, the second adhesive layer, the solar cell and the first adhesive film layer can be bonded into a whole to form a laminated assembly.

[0141] In an embodiment according to the present application, the solar module is twice laminated by a second laminator. As shown in Figure 15, the figure shows the fifth flowchart of the processing method of the solar module of the embodiment of the present application. The second laminating step of the laminated assembly, the second adhesive film layer, the adhesive strip and the first protective layer includes the following steps S502-S510:

[0142] S502: Control the vacuum pump of the second laminator to perform vacuum pumping operation in the second laminator, the running time of the vacuum pump of the second laminator is in the time range of 10-12min, and the pressure in the second laminator is kept in the range of-100kPa to-99kPa;

[0143] S504: control the heating device of the second laminator to heat the inside of the second laminator to a temperature range of 80-90℃, and keep for 5-10 minutes;

[0144] S506: control the heating device of the second laminator to heat the inside of the second laminator to a temperature range of 100-110℃, and keep for 5-10 minutes;

[0145] S508: control the heating device of the second laminator to heat the inside of the second laminator to a temperature range of 120-130℃, and keep for 5-10 minutes;

[0146] S510: control the heating device of the second laminator to heat the inside of the second laminator to a temperature range of 150-160℃, and keep for 40-60 minutes.

[0147] In this embodiment, the processing method of the solar module is further limited. The solar module is further laminated by a second laminator. The second lamination of the laminated module, the second adhesive film layer, the adhesive strip and the first protective layer is specifically as follows. First, control the vacuumizing device of the second laminator to perform vacuumizing operation on the inside of the second laminator, the vacuumizing device of the second laminator is operated for 10-12 minutes, and the pressure in the second laminator is kept in the range of -100kPa to -99kPa. Then, the laminated module, the second adhesive film layer, the adhesive strip and the first protective layer are laminated for different time lengths at different temperatures. The second laminator can be a silicone bag laminator.

[0148] Specifically, first, control the heating device of the second laminator to heat the inside of the second laminator to a temperature range of 80-90℃, and keep for 5-10 minutes, during which the pressure in the second laminator is kept in the range of -100kPa to -99kPa. Then, control the heating device of the second laminator to heat the inside of the second laminator to a temperature range of 100-110℃, and keep for 5-10 minutes, during which the pressure in the second laminator is kept in the range of -100kPa to -99kPa. Then, control the heating device of the second laminator to heat the inside of the second laminator to a temperature range of 120-130℃, and keep for 5-10 minutes, during which the pressure in the second laminator is kept in the range of -100kPa to -99kPa. Then, control the heating device of the second laminator to heat the inside of the second laminator to a temperature range of 150-160℃, and keep for 5-10 minutes, during which the pressure in the second laminator is kept in the range of -100kPa to -99kPa.

[0149] By arranging the adhesive strip between the arch and the second adhesive film layer, the surface of the arch can be flattened by the adhesive strip, so as to prevent the solar cell from being subjected to excessive force at the arch, thereby reducing the probability of the solar cell from being cracked. The adhesive strip is light-transmissive, and light can pass through the first protective layer and the adhesive strip to reach the solar cell.

[0150] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" etc. 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 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.

[0151] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made hereto without departing from the principles and spirit of the application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A solar module, wherein, The solar module comprises: a solar cell for converting light energy into electrical energy, the solar cell having a first surface and a second surface, the first surface being capable of receiving light rays; a first protective layer, the first surface facing the first protective layer, the first protective layer being capable of transmitting light, the first protective layer having a plurality of arches protruding towards the solar cell; at least one adhesive strip between the arches and the solar cell, the adhesive strip covering at least a portion of the corresponding arches; a second protective layer, the second surface facing the second protective layer.

2. The solar module of claim 1, wherein, The plurality of arches comprises: at least one first arch; at least one second arch, the height of the first arch being lower than the height of any of the second arches, the adhesive strip being between the first arch and the solar cell.

3. The solar module of claim 1, wherein, Further comprising: a first adhesive layer between the solar cell and the first protective layer, the adhesive strip being of the same material as the first adhesive layer.

4. The solar module of claim 3, wherein, The first adhesive layer comprises: a first adhesive film layer adhered to the first surface of the solar cell, the first adhesive film layer being capable of transmitting light; a second adhesive film layer between the first adhesive film layer and the first protective layer, the adhesive strip being between the second adhesive film layer and the first protective layer, the second adhesive film layer being used to adhere the first protective layer to the first adhesive film layer, the adhesive strip being capable of adhering a portion of the first protective layer to the first adhesive film layer, the second adhesive film layer being capable of transmitting light.

5. The solar module of claim 1, wherein, Further comprising: a second adhesive layer between the solar cell and the second protective layer, the second adhesive layer being used to adhere the second protective layer to the solar cell.

6. The solar module according to claim 5, wherein: the second surface is capable of receiving light rays, the second protective layer and the second adhesive layer are capable of transmitting light.

7. A method of processing a solar module, wherein, A method for processing the solar module according to any one of claims 1 to 6, the method comprising: stacking a second protective layer, a second adhesive layer, a solar cell and a first adhesive film layer in sequence; performing a first lamination on the second protective layer, the second adhesive layer, the solar cell and the first adhesive film layer to form a laminated assembly; stacking the laminated assembly, a second adhesive film layer and a first protective layer in sequence, and placing at least one adhesive strip between the arches of the first protective layer and the second adhesive film layer; performing a second lamination on the laminated assembly, the second adhesive film layer, the adhesive strip and the first protective layer to form the solar module.

8. The method of processing a solar module according to claim 7, wherein, The stacking of the laminated assembly, a second adhesive film layer and a first protective layer in sequence, and the placing of at least one adhesive strip between the arches of the first protective layer and the second adhesive film layer, specifically comprises: placing at least one of the adhesive strips between the arches and the second adhesive film layer; facing the first adhesive film layer in the laminated assembly towards the second adhesive film layer, and placing the laminated assembly above the second adhesive film layer.

9. The method of processing a solar module according to claim 8, wherein, The placing of at least one of the adhesive strips between the arches and the second adhesive film layer, specifically comprises: The height values of the plurality of arches are measured, and the arches with height values less than a preset height value are first arches, and the arches with height values greater than or equal to the preset height value are second arches; At least one of the adhesive strips is arranged between the first arch and the second adhesive film layer.

10. The method of processing a solar module according to claim 7, wherein, The solar module is laminated by a first laminating machine, and the second protective layer, the second adhesive layer, the solar cell and the first adhesive film layer are laminated by the first laminating machine, specifically: The heating device of the first laminating machine is controlled to heat the first laminating machine to a temperature range of 140-150°C; The vacuumizing device of the first laminating machine is controlled to perform vacuumizing operation in the first laminating machine, and the vacuumizing device of the first laminating machine operates for a time range of 360-600s; The first laminating machine is controlled to laminate the second protective layer, the second adhesive layer, the solar cell and the first adhesive film layer at a first pressure for a first time range, the first pressure ranges from 20kPa to 30kPa, and the first time range ranges from 30s to 60s; The first laminating machine is controlled to laminate the second protective layer, the second adhesive layer, the solar cell and the first adhesive film layer at a second pressure for a second time range, the second pressure ranges from 40kPa to 50kPa, and the second time range ranges from 30s to 60s; The first laminating machine is controlled to laminate the second protective layer, the second adhesive layer, the solar cell and the first adhesive film layer at a third pressure for a third time range, the third pressure ranges from 60kPa to 100kPa, and the third time range ranges from 15min to 20min.

11. The method of processing a solar module according to claim 7, wherein, The solar module is laminated by a second laminating machine, and the laminated assembly, the second adhesive film layer, the adhesive strip and the first protective layer are laminated by the second laminating machine, specifically: The vacuumizing device of the second laminating machine is controlled to perform vacuumizing operation in the second laminating machine, the vacuumizing device of the second laminating machine operates for a time range of 10-12min, and the pressure in the second laminating machine is maintained in a range of -100kPa to -99kPa; The heating device of the second laminating machine is controlled to heat the second laminating machine to a temperature range of 80-90°C, and maintain for a time range of 5-10min; The heating device of the second laminating machine is controlled to heat the second laminating machine to a temperature range of 100-110°C, and maintain for a time range of 5-10min; The heating device of the second laminating machine is controlled to heat the second laminating machine to a temperature range of 120-130°C, and maintain for a time range of 5-10min; The heating device of the second laminating machine is controlled to heat the second laminating machine to a temperature range of 150-160°C, and maintain for a time range of 40-60min.

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