Solar module, photovoltaic apparatus and processing method for solar module

Abstract

Disclosed are a solar module (100), a photovoltaic apparatus and a processing method for the solar module (100). The solar module (100) comprises: a cell assembly (110) used for converting light energy into electric energy, wherein the cell assembly (110) has a first surface (113) and a second surface (114) facing away from each other, and the first surface (113) can receive light rays; a first protective layer (120), the first protective layer (120) being light-transmissive, the first surface (113) of the cell assembly (110) facing the first protective layer (120), and the surface of the first protective layer (120) being a curved surface; and a second protective layer (130), the second surface (114) of the cell assembly (110) facing the second protective layer (130), the first protective layer (120), the cell assembly (110) and the second protective layer (130) being sequentially stacked, and the surface of the second protective layer (130) being a curved surface. The distance between the edge of the cell assembly (110) and the edge of the adjacent first protective layer (120) is D1, and D1 ranges from 10 mm to 50 mm.

Description

Solar module, photovoltaic device and processing method of solar module

[0001] Priority information

[0002] The present application claims priority to and the benefit of the filing date of Chinese Patent Application No. 202410732397.7, filed on June 6, 2024, in the State Intellectual Property Office of China, and incorporates herein by reference in its entirety. TECHNICAL FIELD

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

[0004] The curved surface photovoltaic product 2' in the related art is laminated by a laminator, as shown in FIG. 1, the laminator includes a plurality of laminating parts 1', the upper and lower laminating parts 1' sandwich the photovoltaic product 2' and apply pressure to the photovoltaic product 2' to perform lamination, but due to the lamination principle of the silicone bag laminator, the edge part of the photovoltaic product 2' is deformed greatly, which in turn causes uneven stress on the edge part and is prone to hidden cracks. SUMMARY

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

[0008] A third object of the present application is to provide a processing method of a solar module.

[0009] 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 cell assembly for converting light energy into electrical energy, the cell assembly having a first surface and a second surface facing away from each other, the first surface being capable of receiving light; a first protective layer, the first protective layer being capable of transmitting light, the first surface of the cell assembly facing the first protective layer, the surface of the first protective layer being a curved surface; a second protective layer, the second surface of the cell assembly facing the second protective layer, the first protective layer, the cell assembly and the second protective layer being sequentially stacked, the surface of the second protective layer being a curved surface; the distance between the edge of the cell assembly and the edge of the adjacent first protective layer is D1, and D1 ranges from 10mm to 50mm.

[0010] The application provides a solar module, which comprises a cell module, a first protective layer and a second protective layer. 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.

[0011] Specifically, the cell module has a first surface and a second surface which are opposite to each other. The first surface can receive light, so that the cell module can convert light energy into electric energy and generate electricity. The first protective layer is located on the first surface of the cell module, and the first protective layer can transmit light. The light can pass through the first protective layer and reach the cell module. Since the first surface of the cell module faces the first protective layer, the light passes through the first protective layer and reaches the first surface of the cell module. The cell module receives the light and converts the light energy into electric energy, so that the solar module generates electricity. The second protective layer is used for further protecting the cell module. The second protective layer is located on the second surface of the cell module, and the second surface of the cell module faces the second protective layer. The second protective layer can further protect the cell module. The first protective layer, the cell module and the second protective layer are sequentially stacked. The cell module is arranged between the first protective layer and the second protective layer, so that the cell module can be protected by the first protective layer and the second protective layer. 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).

[0012] Further, the surfaces of the first protective layer and the second protective layer are curved surfaces. The cell module, the first protective layer and the second protective layer are laminated and formed by a silicone bag laminating machine to form the solar module. Since the surfaces of the first protective layer and the second protective layer are curved surfaces, the cell module is deformed by bending along the surfaces of the first protective layer and the second protective layer during the lamination process. The cell module is prone to hidden cracks after being deformed under pressure. In order to reduce the probability of hidden cracks of the cell, the size relationship between the cell module and the first protective layer is limited.

[0013] Specifically, the distance between the edge of the cell module and the edge of the adjacent first protective layer is D1, and D1 ranges from 10 mm to 50 mm. Understandably, the stress on the edge of the cell module is related to the distance between the cell module and the edge of the adjacent first protective layer, the greater the distance between the cell module and the edge of the adjacent first protective layer, the smaller the stress on the edge of the cell module, and the smaller the distance between the cell module and the edge of the adjacent first protective layer, the greater the stress on the edge of the cell module. By limiting the distance between any cell module and the edge of the adjacent first protective layer to a range of 10 mm to 50 mm, the stress on the edge of the cell module can be reduced, and the probability of hidden cracking of the cell module can be reduced. In one possible technical solution, the distance between any cell module and the edge of the adjacent first protective layer is 25 mm.

[0014] The present application limits the distance between any cell module and the edge of the adjacent first protective layer to a range of 10 mm to 50 mm, thereby reducing the stress on the edge of the cell module, reducing the probability of hidden cracking of the cell module, improving the yield of the solar module, and improving the stability and reliability of the product.

[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 cell module can include a plurality of cell modules, and any cell module can include a plurality of cell pieces. In this technical solution, the distance between any two adjacent cell pieces is D2, and D2 ranges from 0 mm to 0.5 mm. Alternatively, the distance between any two adjacent cell pieces is D3, and D3 ranges from 0 mm to 5 mm.

[0017] In this technical solution, the structure and size of the cell module are limited. The cell module includes a plurality of cell modules, and any cell module includes a plurality of cell pieces, which can be crystalline silicon cell pieces. In one possible technical solution, the plurality of cell modules are arranged in sequence along a first direction, and the plurality of cell pieces in any cell module are arranged in sequence along a second direction, and the first direction is perpendicular to the second direction. The solar module proposed in the present application can be processed by a silicone bag laminator. Specifically, the silicone bag laminator includes a plurality of laminating pieces, and when the solar module is processed, the first protective layer, the cell module, and the second protective layer are sequentially stacked between the plurality of laminating pieces, and the plurality of laminating pieces apply opposite pressure to the first protective layer, the cell module, and the second protective layer under the pressure of vacuum negative pressure, so as to laminate the first protective layer, the cell module, and the second protective layer. The cell pieces in the cell module are prone to hidden cracking after being deformed under pressure. In order to reduce the probability of hidden cracking of the cell pieces, the distance between each cell piece in the cell module is limited.

[0018] Further, the two adjacent battery pieces are overlapped or have a spacing. Specifically, in the case of the two adjacent battery pieces being overlapped, the size of the overlap between the two adjacent battery pieces is D2, and D2 ranges from 0 mm to 0.5 mm. In the case of the two adjacent battery pieces having a spacing, the spacing between the two adjacent battery pieces is D3, and D3 ranges from 0 mm to 5 mm. By limiting the overlap size between the two adjacent battery pieces to the range of 0 mm to 0.5 mm or the spacing between the two adjacent battery pieces to the range of 0 mm to 5 mm, the probability of the battery piece being cracked under stress can be reduced. In a possible technical solution, the distance between any two adjacent battery pieces is 0.5 mm.

[0019] The application limits the overlap size between the two adjacent battery pieces to the range of 0 mm to 0.5 mm or the spacing between the two adjacent battery pieces to the range of 0 mm to 5 mm, thereby preventing the battery piece from being locally stressed too much, reducing the probability of the battery piece being cracked, improving the yield of the solar module, and improving the stability and reliability of the product.

[0020] In some technical solutions, optionally, the distance between any two adjacent battery piece groups is D4, and D4 ranges from 3 mm to 20 mm.

[0021] In this technical solution, the distance between the two adjacent battery piece groups is limited. Specifically, the distance between any two adjacent battery piece groups is D4, and D4 ranges from 3 mm to 20 mm. Understandably, the rigidity of the battery piece assembly as a whole is related to the spacing between the two adjacent battery piece groups. The smaller the spacing between the two adjacent battery piece groups, the greater the rigidity of the battery piece assembly, and the more difficult it is for the battery piece assembly to deform with the surface of the first protective layer and the surface of the second protective member. Conversely, the greater the spacing between the two adjacent battery piece groups, the smaller the rigidity of the battery piece assembly, and the easier it is for the battery piece assembly to deform with the surface of the first protective layer and the surface of the second protective member. By limiting the distance between any two adjacent battery piece groups to the range of 3 mm to 20 mm, the rigidity of the battery piece assembly can meet the processing requirements, the deformation difficulty of the battery piece assembly is reduced on the basis of ensuring the overall rigidity of the solar module, and the probability of the battery piece assembly being cracked is further reduced. In a possible technical solution, the distance between any two adjacent battery piece groups is 3 mm.

[0022] The application can reduce the deformation difficulty of the cell module, and further reduce the probability of cell module hidden cracks, improve the yield of the solar module, and improve the stability and reliability of the product, by limiting the distance between any two adjacent cell groups to be within the range of 3mm to 20mm, while ensuring the overall rigidity of the solar module.

[0023] In some technical solutions, the surfaces of the cells are curved surfaces.

[0024] In this technical solution, the cells are further limited. Specifically, the surfaces of the cells, the first protective layer and the second protective layer are curved surfaces. Thus, the solar module becomes a curved product. This not only improves the aesthetics of the solar module, but also makes the solar module applicable to more types of photovoltaic equipment.

[0025] In some technical solutions, the solar module further comprises: a first adhesive film layer between the cell module and the first protective layer, the first adhesive film layer being used to bond the cell module and the first protective layer, the first adhesive film layer being capable of transmitting light; and a second adhesive film layer between the cell module and the second protective layer, the second adhesive film layer being used to bond the cell module and the second protective layer.

[0026] In this technical solution, the structure of the solar module is further limited. The solar module further comprises a first adhesive film layer and a second adhesive film layer, which are used to bond the first protective layer, the cell module and the second protective layer into one. Specifically, the first adhesive film layer is between the cell module and the first protective layer, and is used to bond the cell module and the first protective layer. Moreover, the first adhesive film layer is capable of transmitting light, and the light can pass through the first protective layer and the first adhesive film layer to the cell module, so that the cell module can convert light energy into electrical energy and generate electricity. The second adhesive film layer is between the cell module and the second protective layer, and is used to bond the cell module and the second protective layer.

[0027] The materials of the first adhesive film layer and the second adhesive film layer can be EVA (ethylene vinyl acetate polymer), POE (polyethylene), POE (polyethylene), PVB (polyvinyl butyral) or organic silicone glue.

[0028] By providing the first adhesive film layer and the second adhesive film layer in the solar module, the first protective layer and the cell module can be bonded by the first adhesive film layer, and the second protective layer and the cell module can be bonded by the second adhesive film layer, so that the first protective layer, the cell module and the second protective layer become a whole.

[0029] In some embodiments, the second surface is capable of receiving light, and the second protective layer and the second film layer are capable of transmitting light.

[0030] In this embodiment, the battery assembly, the second protective layer and the second film layer are further defined. Specifically, the second surface of the battery assembly is capable of receiving light, and the second protective layer and the second film layer are capable of transmitting light. The light can pass through the second protective layer and the second film layer and then be transmitted to the second surface of the battery assembly. Since the second surface of the battery assembly is capable of receiving light, the battery assembly can realize double-sided power generation.

[0031] By setting the second protective layer and the second film layer to be capable of transmitting light and setting the second surface of the battery assembly to be capable of receiving light, the battery assembly can realize double-sided power generation, and the solar assembly becomes a double-sided power generation product.

[0032] The second aspect of the present application also provides a photovoltaic device comprising the solar assembly according to the first aspect of the present application.

[0033] The photovoltaic device according to the second aspect of the present application comprises the solar assembly according to the first aspect of the present application, and thus has all the beneficial effects of the solar assembly.

[0034] The third aspect of the present application also provides a processing method of a solar assembly. The solar assembly is laminated by a laminator, and the laminator comprises a plurality of laminating parts. The processing method of the solar assembly comprises: sequentially stacking a first protective layer, a first film layer, a battery assembly, a second film layer and a second protective layer in a high-to-low direction between the laminating parts, the surface of the first protective layer and the second protective layer being a curved surface, and the distance between the edge of the battery assembly and the edge of the adjacent first protective layer being D1, wherein D1 is in the range of 10mm to 50mm; and laminating the first protective layer, the first film layer, the battery assembly, the second film layer and the second protective layer by the laminating parts to form the solar assembly.

[0035] The processing method of the solar module provided in the present application is used for processing the solar module. The solar module is laminated by a laminator. The laminator includes a plurality of laminating parts. The laminator applies pressure to a first protective layer, a first adhesive film layer, a cell piece assembly, a second adhesive film layer and a second protective layer to form the solar module. Specifically, the first protective layer, the first adhesive film layer, the cell piece assembly, the second adhesive film layer and the second protective layer are sequentially stacked in the laminating parts in a direction from high to low. Then, the laminating parts are used to laminate the first protective layer, the first adhesive film layer, the cell piece assembly, the second adhesive film layer and the second protective layer to form the solar module. During the laminating process, the first protective layer is bonded to a first surface of the cell piece assembly through the first adhesive film layer, and the second protective layer is bonded to a second surface of the cell piece assembly through the second adhesive film layer to form the solar module.

[0036] Further, the surfaces of the first protective layer and the second protective layer are curved surfaces. The cell piece assembly, the first protective layer and the second protective layer are laminated and formed by a silicone bag laminator to form the solar module. Since the surfaces of the first protective layer and the second protective layer are curved surfaces, the cell piece assembly is deformed and bent along the surfaces of the first protective layer and the second protective layer during the laminating process. The cell piece assembly is prone to hidden cracks after being deformed under pressure. In order to reduce the probability of hidden cracks of the cell piece, the present application limits the size relationship between the cell piece assembly and the first protective layer.

[0037] Specifically, the distance between the edge of the cell piece assembly and the edge of the adjacent first protective layer is D1, and the range of D1 is 10mm to 50mm. Understandably, the stress of the edge of the cell piece assembly is related to the distance between the cell piece assembly and the edge of the adjacent first protective layer. The greater the distance between the cell piece assembly and the edge of the adjacent first protective layer, the smaller the stress of the edge of the cell piece assembly. The smaller the distance between the cell piece assembly and the edge of the adjacent first protective layer, the greater the stress of the edge of the cell piece assembly. By limiting the distance between any cell piece assembly and the edge of the adjacent first protective layer to the range of 10mm to 50mm, the stress of the edge of the cell piece assembly can be reduced, and the probability of hidden cracks of the cell piece assembly can be reduced. In one possible technical solution, the distance between any cell piece assembly and the edge of the adjacent first protective layer is 25mm.

[0038] By limiting the distance between any cell piece assembly and the edge of the adjacent first protective layer to the range of 10mm to 50mm, the present application can reduce the stress of the edge of the cell piece assembly, reduce the probability of hidden cracks of the cell piece assembly, improve the yield of the solar module, and improve the stability and reliability of the product.

[0039] In some embodiments, the first protective layer, the first adhesive film layer, the battery piece assembly, the second adhesive film layer and the second protective layer are laminated by the laminating pieces, specifically: the heating device of the laminating machine is controlled to heat the laminating machine; the vacuumizing device of the laminating machine is controlled to perform vacuumizing operation on the laminating machine, so that the plurality of laminating pieces laminates the first protective layer, the first adhesive film layer, the battery piece assembly, the second adhesive film layer and the second protective layer under vacuum negative pressure.

[0040] In this embodiment, the step of laminating the first protective layer, the first adhesive film layer, the battery piece assembly, the second adhesive film layer and the second protective layer by the laminating pieces is limited. Specifically, the heating device of the laminating machine is controlled to heat the laminating machine, and then the vacuumizing device of the laminating machine is controlled to perform vacuumizing operation on the laminating machine, so that the plurality of laminating pieces laminates the first protective layer, the first adhesive film layer, the battery piece assembly, the second adhesive film layer and the second protective layer under vacuum negative pressure. The first adhesive film layer and the second adhesive film layer are melted after heating, and then the first protective layer and the second protective layer are adhered to the two sides of the battery piece assembly through the first adhesive film layer and the second adhesive film layer respectively under the pressure of the laminating pieces, to form the solar module.

[0041] In some embodiments, the battery piece assembly comprises a plurality of battery piece groups, and any battery piece group comprises a plurality of battery pieces; wherein, adjacent two battery pieces overlap, the size of the overlap between adjacent two battery pieces is D2, and D2 ranges from 0mm to 0.5mm; or adjacent two battery pieces have a spacing, the spacing between adjacent two battery pieces is D3, and D3 ranges from 0mm to 5mm; the distance between any adjacent two battery piece groups is D4, and D4 ranges from 3mm to 20mm.

[0042] In the technical solution, the structure and related dimensions of the battery piece assembly are limited. The battery piece assembly includes a plurality of battery piece groups, and any battery piece group includes a plurality of battery pieces; wherein two adjacent battery pieces overlap, the overlapping dimension between the two adjacent battery pieces is D2, and D2 ranges from 0 mm to 0.5 mm; or the two adjacent battery pieces have a spacing, and the spacing between the two adjacent battery pieces is D3, and D3 ranges from 0 mm to 5 mm. The battery pieces can be crystalline silicon battery pieces. In a possible technical solution, the plurality of battery piece groups are sequentially arranged along a first direction, and the plurality of battery pieces in any battery piece group are sequentially arranged along a second direction, and the first direction is perpendicular to the second direction. The solar module proposed in the present application can be processed by a silicone bag laminator. Specifically, the silicone bag laminator includes a plurality of laminating parts, and when the solar module is processed, the first protective layer, the battery piece assembly, and the second protective layer are sequentially stacked between the plurality of laminating parts, and the plurality of laminating parts apply opposite pressure to the first protective layer, the battery piece assembly, and the second protective layer under the pressure of vacuum negative pressure, so as to laminate the first protective layer, the battery piece assembly, and the second protective layer. The battery pieces in the battery piece assembly are prone to hidden cracks after being deformed under pressure. In order to reduce the probability of hidden cracks of the battery pieces, the distance between each battery piece in the battery piece assembly is limited.

[0043] Further, the two adjacent battery pieces overlap or have a spacing. Specifically, in the case where the two adjacent battery pieces overlap, the overlapping dimension between the two adjacent battery pieces is D2, and D2 ranges from 0 mm to 0.5 mm. In the case where the two adjacent battery pieces have a spacing, the spacing between the two adjacent battery pieces is D3, and D3 ranges from 0 mm to 5 mm. By limiting the overlapping dimension between the two adjacent battery pieces to 0 mm to 0.5 mm, or limiting the spacing between the two adjacent battery pieces to 0 mm to 5 mm, the probability of hidden cracks of the battery pieces under stress can be reduced. In a possible technical solution, the distance between any two adjacent battery pieces is 0.5 mm.

[0044] Further, the distance between any two adjacent battery piece groups is D4, and D4 ranges from 3mm to 20mm. Understandably, the rigidity of the battery piece assembly as a whole is related to the distance between the two adjacent battery piece groups, the smaller the distance between the two adjacent battery piece groups, the greater the rigidity of the battery piece assembly, and the more difficult the battery piece assembly deforms along the surface of the first protective layer and the surface of the second protective piece. Conversely, the greater the distance between the two adjacent battery piece groups, the smaller the rigidity of the battery piece assembly, and the easier the battery piece assembly deforms along the surface of the first protective layer and the surface of the second protective piece. By limiting the distance between any two adjacent battery piece groups to a range of 3mm to 20mm, the rigidity of the battery piece assembly can meet the processing requirements, and on the basis of ensuring the rigidity of the solar assembly as a whole, the difficulty of deforming the battery piece assembly is reduced, and thus the probability of hidden cracking of the battery piece assembly is reduced. In one possible technical solution, the distance between any two adjacent battery piece groups is 3mm.

[0045] By limiting the overlapping size between the two adjacent battery pieces to a range of 0mm to 0.5mm, or limiting the distance between the two adjacent battery pieces to a range of 0mm to 5mm, the local stress of the battery piece is prevented from being too large, and thus the probability of hidden cracking of the battery piece is reduced, the yield rate of the solar assembly is improved, and the stability and reliability of the product are improved. By limiting the distance between any two adjacent battery piece groups to a range of 2mm to 5mm, the difficulty of deforming the battery piece assembly can be reduced on the basis of ensuring the rigidity of the solar assembly as a whole, and thus the probability of hidden cracking of the battery piece assembly is reduced, the yield rate of the solar assembly is improved, and the stability and reliability of the product are improved.

[0046] 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 or can be learned by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0047] The above and / or additional aspects and advantages of the application will become apparent and be readily appreciated from the description of implementations, including the accompanying drawings, in which:

[0048] FIG. 1 shows a schematic diagram of laminating a photovoltaic product in the related art;

[0049] FIG. 2 shows a schematic diagram of negative spacing between two adjacent battery pieces in one embodiment of the application;

[0050] FIG. 3 shows a schematic diagram of positive spacing between two adjacent battery pieces in one embodiment of the application;

[0051] FIG. 4 shows a schematic diagram of the relative position between two adjacent battery piece groups in one embodiment of the application;

[0052] Figure 5 shows a schematic view of the relative position between two adjacent cell groups in one embodiment of the present application;

[0053] Figure 6 shows an exploded view of a solar module in one embodiment of the present application;

[0054] Figure 7 shows a schematic view of a cell group in one embodiment of the present application;

[0055] Figure 8 shows a flowchart of a processing method of a solar module in one embodiment of the present application;

[0056] Figure 9 shows a flowchart of a processing method of a solar module in one embodiment of the present application.

[0057] In Figure 1, the correspondence between the reference signs and the component names is as follows: 1'laminate, 2'photovoltaic product.

[0058] In Figures 2 to 7, the correspondence between the reference signs and the component names is as follows: 100 solar module, 110 cell group, 111 cell group, 112 cell, 113 first surface, 114 second surface, 120 first protective layer, 130 second protective layer, 140 first adhesive film layer, 150 second adhesive film layer. DETAILED DESCRIPTION

[0059] Embodiments of the present application are described in detail below with reference to the attached drawing figures, wherein the same or like component reference designators are used to denote the same or like components throughout the several views. The embodiments described below are merely examples used to explain the present application and are not intended to limit the present application.

[0060] The disclosure that follows provides many different embodiments, or examples, for implementing different structures of embodiments of the application. For the purpose of simplicity, the elements and settings of the various examples of the embodiments of the application are described in some instances by a reference number. Of course, this is merely an example and is not intended to limit the application. Embodiments of the application can refer to a reference number in different examples, which is for the purpose of simplicity and clarity, and does not itself indicate a relationship between the various embodiments and / or settings being discussed. In addition, embodiments of the application provide examples of various specific processes and materials, but a person of ordinary skill in the art can realize the application of other processes and / or the use of other materials.

[0061] The solar module 100, photovoltaic device, and processing method of a solar module according to some embodiments of the present application are described below with reference to Figures 2 to 9.

[0062] In an embodiment according to the present application, as shown in FIGS. 6 and 7, the present application provides a solar module 100, comprising: a cell assembly 110, configured to convert light energy into electrical energy, the cell assembly 110 having a first surface 113 and a second surface 114 facing away from each other, the first surface 113 being capable of receiving light; a first protective layer 120, the first protective layer 120 being capable of transmitting light, the first surface 113 of the cell assembly 110 facing the first protective layer 120, the surface of the first protective layer 120 being curved; a second protective layer 130, the second surface 114 of the cell assembly 110 facing the second protective layer 130, the first protective layer 120, the cell assembly 110 and the second protective layer 130 being sequentially stacked, the surface of the second protective layer 130 being curved; the distance between the edge of the cell assembly 110 and the edge of the adjacent first protective layer 120 being D1, D1 being in the range of 10mm to 50mm.

[0063] The present application provides a solar module 100, comprising a cell assembly 110, a first protective layer 120 and a second protective layer 130. The solar module 100 is configured to receive light and convert light energy into electrical energy, and the first protective layer 120 and the second protective layer 130 are configured to protect the solar cell 112.

[0064] Specifically, the cell assembly 110 has a first surface 113 and a second surface 114 facing away from each other, wherein the first surface 113 is capable of receiving light, so that the cell assembly 110 can convert light energy into electrical energy and generate electricity. The first protective layer 120 is located on the first surface 113 of the cell assembly 110, the first protective layer 120 is capable of transmitting light, and the light can pass through the first protective layer 120 to the cell assembly 110. Since the first surface 113 of the cell assembly 110 faces the first protective layer 120, the light passes through the first protective layer 120 and reaches the first surface 113 of the cell assembly 110, the cell assembly 110 receives the light and converts the light energy into electrical energy to generate electricity for the solar module 100. The second protective layer 130 is configured to further protect the cell assembly 110. The second protective layer 130 is located on the second surface 114 of the cell assembly 110, the second surface 114 of the cell assembly 110 faces the second protective layer 130, and the second protective layer 130 can further protect the cell assembly 110. The first protective layer 120, the cell assembly 110 and the second protective layer 130 are sequentially stacked, and the cell assembly 110 is arranged between the first protective layer 120 and the second protective layer 130, so that the cell assembly 110 can be protected by the first protective layer 120 and the second protective layer 130.

[0065] The first protective layer 120 is made of tempered glass, and the second protective layer 130 can be made of tempered glass or PET (polyethylene terephthalate).

[0066] Further, the surfaces of the first protective layer 120 and the second protective layer 130 are curved, and the battery piece assembly 110, the first protective layer 120, and the second protective layer 130 are laminated and formed by a silicone bag laminator to form the solar module 100. Since the surfaces of the first protective layer 120 and the second protective layer 130 are curved, the battery piece assembly 110 is deformed and bent along the surfaces of the first protective layer 120 and the second protective layer 130 during the lamination process. The battery piece assembly 110 is prone to hidden cracks after being deformed under pressure. To reduce the probability of hidden cracks of the battery piece assembly 110, the size relationship between the battery piece assembly 110 and the first protective layer 120 is limited.

[0067] Specifically, the distance between the edge of the battery piece assembly 110 and the edge of the adjacent first protective layer 120 is D1, and D1 ranges from 10 mm to 50 mm. Understandably, the stress on the edge of the battery piece assembly 110 is related to the distance between the edge of the battery piece assembly 110 and the edge of the adjacent first protective layer 120. The greater the distance between the edge of the battery piece assembly 110 and the edge of the adjacent first protective layer 120, the smaller the stress on the edge of the battery piece assembly 110. The smaller the distance between the edge of the battery piece assembly 110 and the edge of the adjacent first protective layer 120, the greater the stress on the edge of the battery piece assembly 110. By limiting the distance between any battery piece assembly and the edge of the adjacent first protective layer 120 to a range of 10 mm to 50 mm, the stress on the edge of the battery piece assembly 110 can be reduced, and the probability of hidden cracks of the battery piece assembly 110 can be reduced. In one possible embodiment, the distance between any battery piece assembly and the edge of the adjacent first protective layer 120 is 25 mm.

[0068] By limiting the distance between any battery piece assembly and the edge of the adjacent first protective layer 120 to a range of 10 mm to 50 mm, the stress on the edge of the battery piece assembly 110 can be reduced, the probability of hidden cracks of the battery piece assembly 110 can be reduced, the yield of the solar module 100 can be improved, and the stability and reliability of the product can be improved. In some embodiments, the battery piece assembly 110 includes a plurality of battery piece assemblies 111, and any battery piece assembly 111 includes a plurality of battery pieces 112, as shown in FIGS. 2, 3, and 7. Adjacent two battery pieces 112 overlap, the size of the overlap between adjacent two battery pieces 112 is D2, and D2 ranges from 0 mm to 0.5 mm. Alternatively, adjacent two battery pieces 112 have a spacing, and the spacing between adjacent two battery pieces 112 is D3, and D3 ranges from 0 mm to 5 mm.

[0069] In this embodiment, the structure and size of the battery piece assembly 110 are defined. The battery piece assembly 110 includes a plurality of battery piece groups 111, any of which includes a plurality of battery pieces 112, which can be crystalline silicon battery pieces. In a possible embodiment, the plurality of battery piece groups 111 are sequentially arranged along a first direction, and the plurality of battery pieces 112 in any of the battery piece groups 111 are sequentially arranged along a second direction, and the first direction is perpendicular to the second direction. The solar module 100 proposed in this application can be processed by a silicone bag laminator. Specifically, the silicone bag laminator includes a plurality of laminating parts, and when the solar module 100 is processed, the first protective layer 120, the battery piece assembly 110, and the second protective layer 130 are sequentially stacked between the plurality of laminating parts, and the plurality of laminating parts apply opposite pressure to the first protective layer 120, the battery piece assembly 110, and the second protective layer 130 under the pressure of vacuum negative pressure, so as to laminate the first protective layer 120, the battery piece assembly 110, and the second protective layer 130. The battery pieces 112 in the battery piece assembly 110 are prone to hidden cracks after being deformed under pressure. In order to reduce the probability of hidden cracks of the battery pieces 112, the distance between each of the battery pieces 112 in the battery piece assembly 110 is defined.

[0070] Further, the two adjacent battery pieces 112 overlap or have a spacing. Specifically, as shown in FIG. 2, in the case where the two adjacent battery pieces 112 overlap, the size of the overlap between the two adjacent battery pieces 112 is D2, and D2 ranges from 0 mm to 0.5 mm. As shown in FIG. 3, in the case where the two adjacent battery pieces 112 have a spacing, the spacing between the two adjacent battery pieces 112 is D3, and D3 ranges from 0 mm to 5 mm. By limiting the overlap size between the two adjacent battery pieces 112 to be within the range of 0 mm to 0.5 mm, or limiting the spacing between the two adjacent battery pieces 112 to be within the range of 0 mm to 5 mm, the probability of hidden cracks of the battery pieces 112 under stress can be reduced. In a possible embodiment, the distance between any two adjacent battery piece groups 111 is 0.5 mm.

[0071] By limiting the overlap size between the two adjacent battery pieces 112 to be within the range of 0 mm to 0.5 mm, or limiting the spacing between the two adjacent battery pieces 112 to be within the range of 0 mm to 5 mm, the local stress of the battery pieces 112 is prevented from being too large, thereby reducing the probability of hidden cracks of the battery pieces 112, improving the yield of the solar module 100, and improving the stability and reliability of the product.

[0072] In some embodiments, as shown in FIGS. 4, 5, and 7, the distance between any two adjacent battery piece groups 111 is D4, and D4 ranges from 3 mm to 20 mm.

[0073] In this embodiment, the distance between any two adjacent cell piece groups 111 is limited. Specifically, the distance between any two adjacent cell piece groups 111 is D4, and D4 ranges from 3mm to 20mm. Understandably, the rigidity of the cell piece assembly 110 as a whole is related to the distance between any two adjacent cell piece groups 111. The smaller the distance between any two adjacent cell piece groups 111, the greater the rigidity of the cell piece assembly 110, and the more difficult it is for the cell piece assembly 110 to deform along with the surface of the first protective layer 120 and the surface of the second protective layer 130. Conversely, the greater the distance between any two adjacent cell piece groups 111, the smaller the rigidity of the cell piece assembly 110, and the easier it is for the cell piece assembly 110 to deform along with the surface of the first protective layer 120 and the surface of the second protective layer 130. By limiting the distance between any two adjacent cell piece groups 111 to a range of 3mm to 20mm, the rigidity of the cell piece assembly 110 can meet the processing requirements, and on the basis of ensuring the overall rigidity of the solar module 100, the difficulty of deforming the cell piece assembly 110 is reduced, thereby reducing the probability of hidden cracks of the cell piece assembly 110. In a possible embodiment, the distance between any two adjacent cell piece groups 111 is 3mm.

[0074] By limiting the distance between any two adjacent cell piece groups 111 to a range of 3mm to 20mm, the present application can reduce the difficulty of deforming the cell piece assembly 110 on the basis of ensuring the overall rigidity of the solar module 100, thereby reducing the probability of hidden cracks of the cell piece assembly 110, improving the yield of the solar module 100, and improving the stability and reliability of the product.

[0075] In some embodiments, optionally, the surface of each cell piece 112 is a curved surface.

[0076] In this embodiment, the cell piece 112 is further limited. Specifically, the surface of the cell piece 112, the surface of the first protective layer 120, and the surface of the second protective layer 130 are all curved surfaces. Thus, the solar module 100 becomes a curved product. This not only improves the aesthetics of the solar module 100, but also makes the solar module 100 applicable to more types of photovoltaic equipment.

[0077] In some embodiments, optionally, as shown in FIG. 6, the solar module 100 further includes a first adhesive film layer 140 located between the cell piece assembly 110 and the first protective layer 120, the first adhesive film layer 140 being used to bond the cell piece assembly 110 and the first protective layer 120, and the first adhesive film layer 140 being capable of transmitting light; and a second adhesive film layer 150 located between the cell piece assembly 110 and the second protective layer 130, the second adhesive film layer 150 being used to bond the cell piece assembly 110 and the second protective layer 130.

[0078] In this embodiment, the structure of the solar module 100 is further defined. The solar module 100 further comprises a first adhesive layer 140 and a second adhesive layer 150, which are used to bond the first protective layer 120, the cell assembly 110 and the second protective layer 130 into one. Specifically, the first adhesive layer 140 is located between the cell assembly 110 and the first protective layer 120, and is used to bond the cell assembly 110 and the first protective layer 120. Moreover, the first adhesive layer 140 is light-transmissive, and light can pass through the first protective layer 120 and the first adhesive layer 140 to the cell assembly 110, so that the cell assembly 110 can convert light energy into electrical energy and generate electricity. The second adhesive layer 150 is located between the cell assembly 110 and the second protective layer 130, and is used to bond the cell assembly 110 and the second protective layer 130.

[0079] In this embodiment, the structure of the solar module 100 is further defined. The solar module 100 further comprises a first adhesive layer 140 and a second adhesive layer 150, which are used to bond the first protective layer 120, the cell assembly 110 and the second protective layer 130 into one. Specifically, the first adhesive layer 140 is located between the cell assembly 110 and the first protective layer 120, and is used to bond the cell assembly 110 and the first protective layer 120. Moreover, the first adhesive layer 140 is light-transmissive, and light can pass through the first protective layer 120 and the first adhesive layer 140 to the cell assembly 110, so that the cell assembly 110 can convert light energy into electrical energy and generate electricity. The second adhesive layer 150 is located between the cell assembly 110 and the second protective layer 130, and is used to bond the cell assembly 110 and the second protective layer 130.

[0080] In this embodiment, the structure of the solar module 100 is further defined. The solar module 100 further comprises a first adhesive layer 140 and a second adhesive layer 150, which are used to bond the first protective layer 120, the cell assembly 110 and the second protective layer 130 into one. Specifically, the first adhesive layer 140 is located between the cell assembly 110 and the first protective layer 120, and is used to bond the cell assembly 110 and the first protective layer 120. Moreover, the first adhesive layer 140 is light-transmissive, and light can pass through the first protective layer 120 and the first adhesive layer 140 to the cell assembly 110, so that the cell assembly 110 can convert light energy into electrical energy and generate electricity. The second adhesive layer 150 is located between the cell assembly 110 and the second protective layer 130, and is used to bond the cell assembly 110 and the second protective layer 130.

[0081] In some embodiments, the second surface 114 can receive light, and the second protective layer 130 and the second adhesive layer 150 can be light-transmissive.

[0082] In this embodiment, the structure of the solar module 100 is further defined. The solar module 100 further comprises a first adhesive layer 140 and a second adhesive layer 150, which are used to bond the first protective layer 120, the cell assembly 110 and the second protective layer 130 into one. Specifically, the first adhesive layer 140 is located between the cell assembly 110 and the first protective layer 120, and is used to bond the cell assembly 110 and the first protective layer 120. Moreover, the first adhesive layer 140 is light-transmissive, and light can pass through the first protective layer 120 and the first adhesive layer 140 to the cell assembly 110, so that the cell assembly 110 can convert light energy into electrical energy and generate electricity. The second adhesive layer 150 is located between the cell assembly 110 and the second protective layer 130, and is used to bond the cell assembly 110 and the second protective layer 130.

[0083] By setting the second protective layer 130 and the second film layer 150 to be capable of transmitting light and setting the second surface 114 of the cell assembly 110 to be capable of receiving light, the cell assembly 110 can be capable of generating electricity on both sides, and the solar module 100 becomes a double-sided electricity generation product.

[0084] The second aspect of the present application also provides a photovoltaic device comprising the solar module 100 according to the first aspect of the present application.

[0085] The photovoltaic device according to the second aspect of the present application has all the beneficial effects of the solar module 100 according to the first aspect of the present application.

[0086] In a possible embodiment, as shown in FIG. 6, the photovoltaic product (i.e., the solar module 100) comprises a curved tempered glass (the first protective layer 120), a first encapsulating film (i.e., the first film layer 140), a power generation unit (i.e., the cell assembly 110), a second encapsulating film (i.e., the second film layer 150), and a back cover plate (i.e., the second protective layer 130), which are sequentially stacked and bonded together by the first encapsulating film and the second encapsulating film. The back cover plate can be made of tempered glass or PET material and has certain weather resistance. The first encapsulating film and the second encapsulating film can be made of EVA, POE, PVB, or organic silicone glue. The power generation unit is a crystalline silicon cell.

[0087] As shown in FIG. 1, the photovoltaic product 2' in the related art mostly adopts a vacuum bag lamination process. During the lamination process, two layers of silicone bags (i.e., the laminated part 1') apply pressure to the photovoltaic product 2' under vacuum negative pressure, and the encapsulating film is melted by heating to bond the layers of materials together. The position of the photovoltaic product 2' is subjected to the pressure of the vacuum negative pressure and the deformation of the silicone bags, and the edge is subjected to greater force than other positions of the product. The cell at this position is prone to hidden cracks due to excessive force.

[0088] As shown in FIG. 7, the power generation unit comprises a plurality of cell strings (i.e., the cell assembly 111), and any cell string comprises a plurality of cells 112. The cell 112 can be a crystalline silicon cell. The cell 112 needs to be bent on the curved back cover plate and the curved tempered glass. Different cell spacings (i.e., the spacing between adjacent cells 112), string spacings (i.e., the spacing between adjacent cell assemblies 111), and distances from the cell string to the edge of the curved tempered glass (i.e., the distance from the cell assembly 111 to the edge of the first protective layer 120) all have certain effects on the hidden cracks of the cell 112.

[0089] The cell spacing mainly affects the contact between the battery pieces 112 during the process of bending along the shape, which causes the contact hidden crack. As shown in FIG. 2 and FIG. 3, the size D2 of the overlap between the two adjacent battery pieces 112 in the photovoltaic product ranges from 0 mm to 0.5 mm (as shown in FIG. 2), or the spacing D3 between the two adjacent battery pieces 112 ranges from 0 mm to 5 mm (as shown in FIG. 3). As shown in FIG. 7, in the photovoltaic product proposed in the present application, the spacing D3 between the two adjacent battery pieces 112 is 0.5 mm.

[0090] The string spacing mainly affects the overall rigidity of the battery pieces 112, and the smaller the spacing, the greater the rigidity of the battery string group, and the greater the difficulty of conforming to the curved surface. On the contrary, the greater the string spacing, the smaller the overall rigidity of the battery string group, and the easier it is to conform to the curved surface. As shown in FIG. 4 and FIG. 5, the spacing D4 between the two adjacent battery strings in the photovoltaic product ranges from 3 mm to 20 mm. As shown in FIG. 7, in one possible embodiment, the spacing D4 between the two adjacent battery strings in the photovoltaic product proposed in the present application is 3 mm.

[0091] The distance from the battery string to the edge of the product mainly affects the stress of the edge battery piece 112, and the greater the distance, the smaller the stress of the edge battery piece 112; on the contrary, the smaller the distance, the greater the stress of the edge battery piece 112. The distance from the battery string of the photovoltaic product to the edge of the curved tempered glass ranges from 10 mm to 50 mm. As shown in FIG. 7, in one possible embodiment, the distance D1 from the battery string to the edge of the curved tempered glass in the photovoltaic product proposed in the present application is 25 mm.

[0092] The third aspect of the present application proposes a processing method of a solar module, the solar module is laminated by a laminator, the laminator includes a plurality of laminating parts, as shown in FIG. 8, which shows one of the flowcharts of the processing method of the solar module in the embodiment of the present application. Wherein, the processing method includes the following steps S102 and S104:

[0093] S102: The first protective layer, the first adhesive film layer, the battery piece assembly, the second adhesive film layer, and the second protective layer are sequentially stacked in the direction from high to low between the plurality of laminating parts, the surface of the first protective layer and the second protective layer is a curved surface, and the distance between the edge of the battery piece assembly and the edge of the adjacent first protective layer is D1, and the range of D1 is 10 mm to 50 mm;

[0094] S104: The first protective layer, the first adhesive film layer, the battery piece assembly, the second adhesive film layer, and the second protective layer are laminated by the laminating part to form a solar module.

[0095] The processing method of the solar module provided in the present application is used for processing the solar module. The solar module is laminated by a laminator. The laminator includes a plurality of laminating parts. The laminator applies pressure to a first protective layer, a first adhesive film layer, a cell piece assembly, a second adhesive film layer and a second protective layer to form the solar module. Specifically, the first protective layer, the first adhesive film layer, the cell piece assembly, the second adhesive film layer and the second protective layer are sequentially stacked in the laminating parts in a direction from high to low. Then, the laminating parts are used to laminate the first protective layer, the first adhesive film layer, the cell piece assembly, the second adhesive film layer and the second protective layer to form the solar module. During the laminating process, the first protective layer is bonded to a first surface of the cell piece assembly through the first adhesive film layer, and the second protective layer is bonded to a second surface of the cell piece assembly through the second adhesive film layer to form the solar module. Further, the surfaces of the first protective layer and the second protective layer are curved surfaces. The cell piece assembly, the first protective layer and the second protective layer are laminated and formed by a silicone bag laminator to form the solar module 100. Since the surfaces of the first protective layer and the second protective layer are curved surfaces, the cell piece assembly is deformed along the surfaces of the first protective layer and the second protective layer during the laminating process. The cell piece assembly is prone to hidden cracks after being deformed under pressure. In order to reduce the probability of hidden cracks of the cell piece, the present application limits the size relationship between the cell piece assembly and the first protective layer.

[0096] Specifically, the distance between the edge of the cell piece assembly and the edge of the adjacent first protective layer is D1, and D1 is in the range of 10 mm to 50 mm. Understandably, the stress of the edge of the cell piece assembly is related to the distance between the cell piece assembly and the edge of the adjacent first protective layer. The greater the distance between the cell piece assembly and the edge of the adjacent first protective layer, the smaller the stress of the edge of the cell piece assembly. The smaller the distance between the cell piece assembly and the edge of the adjacent first protective layer, the greater the stress of the edge of the cell piece assembly. By limiting the distance between any cell piece assembly and the edge of the adjacent first protective layer to be in the range of 10 mm to 50 mm, the stress of the edge of the cell piece assembly can be reduced, and the probability of hidden cracks of the cell piece assembly can be reduced. In one possible embodiment, the distance between any cell piece assembly and the edge of the adjacent first protective layer is 25 mm.

[0097] By limiting the distance between any cell piece assembly and the edge of the adjacent first protective layer to be in the range of 10 mm to 50 mm, the present application can reduce the stress of the edge of the cell piece assembly, reduce the probability of hidden cracks of the cell piece assembly, improve the yield of the solar module 100, and improve the stability and reliability of the product. In an embodiment according to the present application, as shown in FIG. 9, a flowchart of the processing method of the solar module of the embodiment of the present application is shown. The processing method includes the following steps S202 to S206:

[0098] S202: sequentially stack the first protective layer, the first adhesive film layer, the battery piece assembly, the second adhesive film layer, and the second protective layer in the direction from high to low between the plurality of laminating pieces, the surface of the first protective layer and the second protective layer is a curved surface, the distance between the edge of the battery piece assembly and the edge of the adjacent first protective layer is D1, and the range of D1 is 10 mm to 50 mm;

[0099] S204: control the heating device of the laminating machine to heat the laminating machine;

[0100] S206: control the vacuumizing device of the laminating machine to perform vacuumizing operation on the laminating machine, so that the plurality of laminating pieces laminates the first protective layer, the first adhesive film layer, the battery piece assembly, the second adhesive film layer, and the second protective layer under vacuum negative pressure to form the solar energy assembly.

[0101] In this embodiment, the step of laminating the first protective layer, the first adhesive film layer, the battery piece assembly, the second adhesive film layer, and the second protective layer by the laminating pieces is limited. Specifically, the heating device of the laminating machine is first controlled to heat the laminating machine, and then the vacuumizing device of the laminating machine is controlled to perform vacuumizing operation on the laminating machine, so that the plurality of laminating pieces laminates the first protective layer, the first adhesive film layer, the battery piece assembly, the second adhesive film layer, and the second protective layer under vacuum negative pressure. The first adhesive film layer and the second adhesive film layer melt after being heated, and then the first protective layer and the second protective layer are respectively bonded to the two sides of the battery piece assembly through the first adhesive film layer and the second adhesive film layer under the pressure of the laminating pieces to form the solar energy assembly.

[0102] In some embodiments, as shown in FIG. 7, the battery piece assembly 110 includes a plurality of battery piece groups 111, and any battery piece group 111 includes a plurality of battery pieces 112; wherein the adjacent two battery pieces 112 overlap, the size of the overlap between the adjacent two battery pieces 112 is D2, and the range of D2 is 0 mm to 0.5 mm; or the adjacent two battery pieces 112 have a spacing, the spacing between the adjacent two battery pieces 112 is D3, and the range of D3 is 0 mm to 5 mm; the distance between any adjacent two battery piece groups 111 is D4, and the range of D4 is 3 mm to 20 mm.

[0103] In this embodiment, the structure and related dimensions of the battery piece assembly 110 are defined. The battery piece assembly 110 includes a plurality of battery piece groups 111, and any battery piece group 111 includes a plurality of battery pieces 112; wherein two adjacent battery pieces 112 overlap, the overlapping dimension between the two adjacent battery pieces 112 is D2, and D2 ranges from 0 mm to 0.5 mm; or the two adjacent battery pieces 112 have a spacing, and the spacing between the two adjacent battery pieces 112 is D3, and D3 ranges from 0 mm to 5 mm. The battery piece 112 can be a crystalline silicon battery piece. In a possible embodiment, the plurality of battery piece groups 111 are sequentially arranged along a first direction, and the plurality of battery pieces 112 in any battery piece group 111 are sequentially arranged along a second direction, and the first direction is perpendicular to the second direction. The solar module 100 proposed in this application can be processed by a silicone bag laminator. Specifically, the silicone bag laminator includes a plurality of laminating parts, and when the solar module 100 is processed, the first protective layer 120, the battery piece assembly 110, and the second protective layer 130 are sequentially stacked between the plurality of laminating parts, and the plurality of laminating parts apply opposite pressure to the first protective layer 120, the battery piece assembly 110, and the second protective layer 130 under the pressure of vacuum negative pressure, so as to laminate the first protective layer 120, the battery piece assembly 110, and the second protective layer 130. The battery piece 112 in the battery piece assembly 110 is prone to hidden cracks after being deformed under pressure. In order to reduce the probability of hidden cracks of the battery piece 112, the distance between each battery piece 112 in the battery piece assembly 110 is limited.

[0104] Further, the two adjacent battery pieces 112 overlap or have a spacing. Specifically, in the case where the two adjacent battery pieces 112 overlap, the overlapping dimension between the two adjacent battery pieces 112 is D2, and D2 ranges from 0 mm to 0.5 mm. In the case where the two adjacent battery pieces 112 have a spacing, the spacing between the two adjacent battery pieces 112 is D3, and D3 ranges from 0 mm to 5 mm. By limiting the overlapping dimension between the two adjacent battery pieces 112 to 0 mm to 0.5 mm, or limiting the spacing between the two adjacent battery pieces 112 to 0 mm to 5 mm, the probability of hidden cracks of the battery piece 112 under stress can be reduced. In a possible embodiment, the distance between any two adjacent battery pieces 112 is 0.5 mm.

[0105] Further, the distance between any two adjacent battery piece groups 111 is D4, and D4 ranges from 3 mm to 20 mm. Understandably, the rigidity of the battery piece assembly 110 as a whole is related to the spacing between the two adjacent battery piece groups 111, the smaller the spacing between the two adjacent battery piece groups 111, the greater the rigidity of the battery piece assembly 110, and the more difficult the battery piece assembly 110 is to deform along with the surface of the first protective layer 120 and the surface of the second protective layer 130. Conversely, the greater the spacing between the two adjacent battery piece groups 111, the smaller the rigidity of the battery piece assembly 110, and the less difficult the battery piece assembly 110 is to deform along with the surface of the first protective layer 120 and the surface of the second protective layer 130. By limiting the distance between any two adjacent battery piece groups 111 to a range of 3 mm to 20 mm, the rigidity of the battery piece assembly 110 can meet the processing requirements, and on the basis of ensuring the overall rigidity of the solar module 100, the difficulty of deforming the battery piece assembly 110 is reduced, and thus the probability of the battery piece assembly 110 being cracked is reduced. In a possible embodiment, the distance between any two adjacent battery piece groups 111 is 3 mm.

[0106] By limiting the overlapping size between the two adjacent battery pieces 112 to a range of 0 mm to 0.5 mm, or limiting the spacing between the two adjacent battery pieces 112 to a range of 0 mm to 5 mm, the local stress of the battery piece 112 is prevented from being too large, and thus the probability of the battery piece 112 being cracked is reduced, and the yield rate of the solar module 100 is improved, and the stability and reliability of the product are improved. By limiting the distance between any two adjacent battery piece groups 111 to a range of 2 mm to 5 mm, on the basis of ensuring the overall rigidity of the solar module 100, the difficulty of deforming the battery piece assembly 110 is reduced, and thus the probability of the battery piece assembly 110 being cracked is reduced, and the yield rate of the solar module 100 is improved, and the stability and reliability of the product are improved.

[0107] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" 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 specification, the exemplary description of the above terms does not necessarily mean 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.

[0108] While the embodiments of the present application have been shown and described, it is to be understood that the embodiments can be varied, modified, substituted and changed by those skilled in the art without departing from the principles and spirit of the present application, the scope of which is defined by the claims and their equivalents.

Claims

1. A solar module, wherein, The solar energy assembly comprises: a battery piece assembly for converting light energy into electrical energy, the battery piece assembly having a first surface and a second surface facing away from each other, the first surface being capable of receiving light rays; a first protective layer capable of transmitting light, the first surface of the battery piece assembly facing the first protective layer, the surface of the first protective layer being curved; a second protective layer, the second surface of the battery piece assembly facing the second protective layer, the first protective layer, the battery piece assembly and the second protective layer being sequentially stacked, the surface of the second protective layer being curved; the distance between the edge of the battery piece assembly and the edge of the adjacent first protective layer is D1, and the range of D1 is 10mm to 50mm.

2. The solar module of claim 1, wherein, The battery piece assembly comprises: a plurality of battery piece groups, any of the battery piece groups comprising a plurality of battery pieces; wherein two adjacent battery pieces overlap, the size of the overlap between the two adjacent battery pieces being D2, and the range of D2 being 0mm to 0.5mm; or two adjacent battery pieces have a spacing therebetween, the spacing between the two adjacent battery pieces being D3, and the range of D3 being 0mm to 5mm.

3. The solar energy assembly according to claim 2, wherein: the distance between any two adjacent battery piece groups is D4, and the range of D4 is 3mm to 20mm.

4. The solar energy assembly according to claim 2, wherein: the surface of the battery piece is curved.

5. The solar module of any of claims 1-3, wherein, Further comprising: a first adhesive film layer between the battery piece assembly and the first protective layer, the first adhesive film layer being used for bonding the battery piece assembly and the first protective layer, and the first adhesive film layer being capable of transmitting light; a second adhesive film layer between the battery piece assembly and the second protective layer, the second adhesive film layer being used for bonding the battery piece assembly and the second protective layer.

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

7. A photovoltaic device, wherein, The solar energy assembly comprises: the solar energy assembly according to any one of claims 1 to 6.

8. A method of processing a solar module, wherein, The solar energy assembly is laminated by a laminator, the laminator comprising a plurality of laminating parts, and the processing method of the solar energy assembly comprises: placing the first protective layer, the first adhesive film layer, the battery piece assembly, the second adhesive film layer and the second protective layer in the laminating parts in sequence from high to low, the surface of the first protective layer and the second protective layer being curved, and the distance between the edge of the battery piece assembly and the edge of the adjacent first protective layer being D1, and the range of D1 being 10mm to 50mm; laminating the first protective layer, the first adhesive film layer, the battery piece assembly, the second adhesive film layer and the second protective layer by the laminating parts to form the solar energy assembly.

9. The method of processing a solar module according to claim 8, wherein, The laminating the first protective layer, the first adhesive film layer, the battery piece assembly, the second adhesive film layer and the second protective layer by the laminating parts specifically comprises: controlling the heating device of the laminator to heat the laminator; A vacuumizing device of the laminating machine is controlled to perform a vacuumizing operation in the laminating machine, so that the plurality of laminated pieces laminates the first protective layer, the first adhesive film layer, the battery piece assembly, the second adhesive film layer and the second protective layer under a vacuum negative pressure.

10. The method of claim 8, wherein, the battery piece assembly comprises a plurality of battery piece groups, and any one of the battery piece groups comprises a plurality of battery pieces; wherein two adjacent battery pieces overlap, and a size of the overlap between the two adjacent battery pieces is D2, the D2 ranging from 0 mm to 0.5 mm; or the two adjacent battery pieces have a spacing therebetween, and the spacing between the two adjacent battery pieces is D3, the D3 ranging from 0 mm to 5 mm; a distance between any two adjacent battery piece groups is D4, the D4 ranging from 3 mm to 20 mm.

Images