Preparation method of panel assembly and photovoltaic assembly

Abstract

The invention discloses a preparation method of a panel assembly and a photovoltaic assembly, the panel assembly is used for the photovoltaic assembly, and the preparation method comprises the following steps: selecting a light-transmitting panel, and carrying out toughening treatment on the light-transmitting panel; a coating is formed on the light-transmitting panel through silk-screen printing; and carrying out curing treatment on the coating.

Description

Technical Field

[0001] This application belongs to the field of photovoltaics, and specifically relates to a preparation method of a panel assembly and a photovoltaic module. Background Art

[0002] In the related art, a coating is screen-printed on photovoltaic glass. In the related solutions, when preparing photovoltaic glass, ink is mostly used for printing. The preparation process is as follows: screen-print the ink on the glass panel, then heat and dry it for curing, and then temper the screen-printed glass panel. During the tempering process, ordinary ink has a low temperature tolerance and will discolor and distort due to high temperature. For high-temperature resistant ink, the available colors are limited. On the one hand, it cannot meet the related requirements, and on the other hand, it will also increase the cost. And for curved glass, after screen-printing and then heating and tempering, the glass will become soft, and abnormal problems such as deviation or deformation are likely to occur at the screen-printed position of the photovoltaic glass, resulting in a high defective rate of the product.

[0003] Therefore, how to propose a preparation method of a panel assembly in which the prepared ink is not easily distorted, the ink color can be selected flexibly, and the screen-printed position is not easily deviated or deformed is an urgent problem to be solved at present. Summary of the Invention

[0004] This application aims to solve one of the technical problems in the existing solutions.

[0005] To solve the above technical problems, an embodiment of the first aspect of this application provides a preparation method of a panel assembly.

[0006] An embodiment of the second aspect of this application provides a photovoltaic module.

[0007] According to the preparation method of the panel assembly provided by the technical solution of the first aspect of this application, the panel assembly is used for a photovoltaic module, and the preparation method includes: selecting a light-transmitting panel, and the light-transmitting panel is tempered; screen-printing a coating on the light-transmitting panel; and curing the coating.

[0008] The manufacturing method of the panel component provided by the technical solution of the present application is used to manufacture the front panel of a photovoltaic module. During specific manufacturing, a tempered light-transmitting panel (such as tempered glass) is directly selected to make the front panel of the photovoltaic module. Then, the required coating is screen-printed on the light-transmitting panel. With this setup, since a tempered light-transmitting panel is selected in advance, the strength of the light-transmitting panel is ensured, so that the light-transmitting panel after screen printing no longer requires high-temperature tempering treatment (the tempering temperature is generally around 600 °C). In this way, while ensuring the strength of the prepared light-transmitting panel, it is ensured that the color of the screen-printed coating will not be distorted. At the same time, with this setup, since the light-transmitting panel is not tempered after screen printing, problems such as the screen printing position becoming poor and the screen printing pattern being deformed due to the deformation of the light-transmitting panel at high temperature are avoided, thereby ensuring the qualification rate of the prepared panel component. In addition, with this solution, since the light-transmitting panel is not tempered after screen printing, the high-temperature resistance of the ink is reduced, making the selection of the ink more flexible. This not only reduces the cost of the ink but also makes the color and material of the ink more diverse, thus meeting the different appearance requirements of the panel component.

[0009] Among them, the coating on the light-transmitting panel is used for decoration on the one hand and can also hide some components of the structure inside the panel, thereby ensuring the aesthetics of the photovoltaic module.

[0010] Specifically, the photovoltaic module further includes a component to be blocked, and the coating includes a blocking coating provided corresponding to the component to be blocked.

[0011] In some possible designs, the photovoltaic cell layer includes a plurality of cell strings and busbars connecting the plurality of cell strings; the coating includes a first coating provided corresponding to the busbars. The first coating is part of the blocking coating.

[0012] In this technical solution, the coating includes a first coating provided corresponding to the busbars, and the first coating can block the busbars, so that the busbars can be hidden. In this way, on the one hand, the busbars can be prevented from being exposed to light for a long time and being deformed and damaged due to long-term exposure to light. On the other hand, the busbars are not exposed outside, which can improve the overall aesthetics of the front part.

[0013] Among them, the cell strings are welded to the busbars, and the plurality of cell strings transmit electrical energy to external devices through the busbars; and / or the plurality of cell strings are electrically connected through the busbars.

[0014] In a possible design, the light-transmitting panel is a tempered light-transmitting panel, such as a tempered light-transmitting panel or a semi-tempered light-transmitting panel.

[0015] In this solution, the tempered light-transmitting panel is directly selected, so there is no need to temper the light-transmitting panel in advance, which simplifies the preparation process of the light-transmitting panel. The light-transmitting panel can be selected as tempered glass or semi-tempered glass according to needs.

[0016] In a possible design, the preparation method further includes: tempering the light-transmitting panel substrate to obtain the tempered light-transmitting panel.

[0017] In this technical solution, it is necessary to temper the light-transmitting panel in advance, so that the tempering process can be controlled according to actual needs, making the prepared light-transmitting panel more in line with requirements.

[0018] In a possible design, the thickness of the coating is greater than or equal to 20μm and less than or equal to 50μm.

[0019] This thickness of the coating can make the combination between the coating and the light-transmitting panel better, and can also prevent the coating from cracking, thus ensuring that the coating is not easily damaged.

[0020] In a possible design, the light-transmitting panel is a curved light-transmitting panel.

[0021] In this technical solution, the shape of the light-transmitting panel will affect its light reception degree. By setting the light-transmitting panel as a curved light-transmitting panel, the area of the light-transmitting panel can be increased, making the contact area between the light-transmitting panel and light larger, thereby increasing the power generation effect of the photovoltaic module.

[0022] In a possible design, when printing the coating on the light-transmitting panel, the screen printing mold used is a flexible screen printing mold. The shape of the flexible screen printing mold is adapted to the shape of the curved light-transmitting panel.

[0023] This setting can achieve screen printing of the curved light-transmitting panel through the flexible screen printing mold, and the shape of the flexible screen printing mold is adapted to the shape of the curved light-transmitting panel, so that during screen printing, neither the curved light-transmitting panel nor the screen printing mold needs to move, and the screen printing can be completed at one time.

[0024] Furthermore, the curved light-transmitting panel is a multi-segment curved surface structure, that is, the curved light-transmitting panel includes at least one wave crest and wave trough. And the multi-segment curved light-transmitting panel has better daylighting performance.

[0025] In a possible design, the light-transmitting panel includes an arc-shaped light-transmitting panel, and the curve radius of the arc-shaped light-transmitting panel is greater than or equal to 30mm and less than or equal to 150mm.

[0026] Optionally, if the radius of the arc-shaped light-transmitting panel is too large, the position of the wave crest will be too flat, which is not conducive to the dispersion of light. If the radius of the arc-shaped light-transmitting panel is too small, it is not conducive to the manufacturing of the photovoltaic module. Therefore, the radius of the arc-shaped light-transmitting panel is set between 30 mm and 150 mm, which can not only ensure the light dispersion effect but also facilitate the manufacturing of the photovoltaic module.

[0027] In a possible design, the light-transmitting panel is a tempered glass light-transmitting panel; and / or the light-transmitting panel includes a tempered light-transmitting panel or a semi-tempered light-transmitting panel.

[0028] With this setting, the light-transmitting panel is a glass light-transmitting panel, which can ensure the light transmittance of the light-transmitting panel and thus ensure the lighting effect of the photovoltaic module. When the light-transmitting panel is tempered, it can be fully tempered to form a fully tempered light-transmitting panel. It can also be semi-tempered to form a semi-tempered light-transmitting panel.

[0029] In a possible design, the step of curing the coating includes: sintering the light-transmitting panel with the coating. During sintering, the sintering temperature is greater than or equal to 140 °C and less than or equal to 150 °C, and the sintering time is greater than or equal to 30 min and less than or equal to 60 min.

[0030] In this technical solution, the coating can be quickly cured through sintering and stably combined with the light-transmitting panel. Among them, during sintering, the temperature is 140 °C - 150 °C and the sintering time is 30 min - 60 min, which can ensure the bonding strength between the coating and the light-transmitting panel.

[0031] In a possible design, the coating includes an ink coating, and the ink used in the ink coating includes at least one of pearlescent ink, metallic ink, magnetic ink or photochromic ink.

[0032] In this technical solution, the coating on the light-transmitting panel can be prepared by ink. Ink is relatively common and thus easy to purchase. At the same time, the type of ink can be selected according to needs, such as pearlescent ink, metallic ink, magnetic ink or photochromic ink, etc.

[0033] Among them, selecting different inks can highlight different color visual effects and performance improvements. Pearlescent ink can enhance the transparent visual effect of the product, metallic ink can enhance the visual texture of the panel, photochromic ink can change the color and luster of the panel pattern under different light intensities, and the color richness of the panel can be achieved by changing the colorant.

[0034] In a possible design, the method for preparing the panel assembly further includes: before the step of screen-printing a coating on the light-transmitting panel, performing a sense-esterification treatment on the light-transmitting panel with an esterifying agent, where the esterifying agent includes one of hexamethyldisiloxane, trimethylsiloxane, and dimethylchlorosilane.

[0035] In this technical solution, after the light-transmitting panel is cleaned, a sense-esterification treatment can be performed on the light-transmitting panel, where the esterifying agent can be one of hexamethyldisiloxane, trimethylsiloxane, and dimethylchlorosilane. And through the sense-esterification treatment, the lipophilicity of the light-transmitting panel can be enhanced, thereby improving the bonding strength between the coating and the light-transmitting panel and reducing the risk of the coating peeling off.

[0036] In a possible design, the step of screen-printing a coating on the light-transmitting panel includes: designing a screen mold for the light-transmitting panel, where the length of the screen mold is greater than or equal to the length of the light-transmitting panel, and the width of the screen mold is the same as the width of the light-transmitting panel; after the light-transmitting panel is fixed, placing the screen mold on the surface of the light-transmitting panel to be screen-printed; coating ink on the screen mold; and using a squeegee to apply the ink on the screen mold to the light-transmitting panel.

[0037] In this technical solution, a screen mold with a corresponding pattern can be designed in advance according to the bending curvature, shape, arrangement of battery cells, and electrode grid connection method of the light-transmitting panel. At the same time, ensure that the length of the screen mold is slightly longer than the length of the light-transmitting panel, and the width is basically the same as the light-transmitting panel, so that a coating that meets the requirements can be screen-printed through the screen mold at one time. This setting realizes local screen-printing through customized flexible screen mold design, thereby improving the aesthetics of the product and enabling the photovoltaic module to have high-quality and diverse performance characteristics.

[0038] Among them, this design uses a customized flexible screen template for printing, enabling the flexible screen printing plate and the light-transmitting panel to fit tightly, ensuring that precise printing can be completed on a continuous light-transmitting panel, solving the defect that traditional printing cannot achieve precise printing of curved products, and having the advantages of high printing efficiency and strong practicability.

[0039] In a possible design, the running speed of the squeegee is 15 m / min - 30 m / min. Among them, the speed of the squeegee has a great influence on the formation quality of the coating. Especially for a curved light-transmitting panel, the quality of the coating at the peaks and valleys is closely related to the running speed of the squeegee. And setting the running speed of the squeegee to 15 m / min - 30 m / min can ensure the quality of the screen-printed coating and the clarity of the coating boundary.

[0040] In a possible design, the screen printing mold includes a flexible screen printing mold, which is made of at least one of polyurethane, polyester, or carbon fiber. The elongation rate of the flexible screen printing mold is less than 2%, the roughness Ra is less than 0.5 μm, the screen mesh number of the screen printing mold is greater than or equal to 100 and less than or equal to 500. This flexible screen printing mold has good ductility and dimensional stability, thereby improving the screen printing quality.

[0041] In a possible design, the squeegee is made of polyurethane rubber, the hardness of the squeegee is greater than or equal to 60 Shore and less than or equal to 80 Shore, and the width of the squeegee is less than the width of the screen printing mold. This setting can ensure that the squeegee has good wear resistance and resilience, thereby improving the screen printing quality.

[0042] The photovoltaic module of the second aspect of the present invention includes: a panel assembly, including a light-transmitting panel and a coating provided on the first surface of the light-transmitting panel; a back plate, provided on the second surface of the panel assembly; a photovoltaic cell layer, provided between the panel assembly and the back plate; wherein, the panel assembly, the back plate, and the photovoltaic cell layer are all curved surface structures, and the shapes of the panel assembly, the back plate, and the photovoltaic cell layer are adapted to each other.

[0043] In this design, the photovoltaic module further includes a light-transmitting panel and a back plate, the photovoltaic cell layer is provided between the light-transmitting panel and the back plate, the light-transmitting panel and the back plate provide support for the photovoltaic cell layer, and the light-transmitting panel can allow light to pass through, ensuring the lighting effect of the photovoltaic module. Among them, the light-transmitting panel, the back plate, and the photovoltaic cell layer are all curved surface structures, and the shapes of the three are adapted to each other, thereby making the photovoltaic module form a curved surface structure.

[0044] Among them, the light-transmitting panel is tempered, that is, the coating of the present application is formed on the tempered panel. With this setting, since the tempered light-transmitting panel is selected in advance, the strength of the light-transmitting panel is ensured, so that the light-transmitting panel after screen printing no longer needs to be tempered at high temperature (the tempering temperature is generally about 600 °C). In this way, while ensuring the strength of the prepared light-transmitting panel, it is ensured that the color of the screen-printed coating will not be distorted. At the same time, with this setting, since the light-transmitting panel is not tempered after screen printing, problems such as the screen printing position becoming poor and the screen printing pattern being deformed caused by the deformation of the light-transmitting panel at high temperature are avoided, thereby ensuring the qualification rate of the prepared panel assembly. In addition, with this solution, since the light-transmitting panel is not tempered after screen printing, the high-temperature resistance of the ink is reduced, so that the selection of the ink is more flexible, which not only reduces the cost of the ink, but also makes the color and material of the ink more diverse, thereby meeting the different appearance requirements of the panel assembly.

[0045] Specifically, the photovoltaic module further includes; a component to be blocked, and the coating includes a blocking coating provided corresponding to the component to be blocked.

[0046] In some possible designs, the photovoltaic cell layer includes a plurality of cell strings and busbars connecting the plurality of cell strings; the coating includes a first coating provided corresponding to the busbars. The first coating is part of the shielding coating.

[0047] In this technical solution, the coating includes a first coating provided corresponding to the busbars, and the first coating can shield the busbars, so that the busbars can be prevented from being exposed outside, thereby realizing the hiding of the busbars. On the one hand, this can prevent the busbars from being exposed to light for a long time and avoid deformation and damage of the busbars due to long-term exposure to light. On the other hand, the busbars are not exposed outside, which can improve the overall aesthetics of the front.

[0048] Among them, the cell strings are welded to the busbars, and the plurality of cell strings transmit electric energy to external devices through the busbars; and / or the plurality of cell strings are electrically connected through the busbars. In some possible designs, the panel assembly, the backsheet, and the photovoltaic cell layer are all multi-segment curved surface structures. That is, the panel assembly, the backsheet, and the photovoltaic cell layer include at least one peak and valley. And the multi-segment structure has better light collection performance.

[0049] In some possible designs, the radius of curvature of the curved surface structure is greater than or equal to 30 mm and less than or equal to 150 mm. Among them, if the radius of the arc structure is too large, the peak position will be too flat, which is not conducive to the dispersion of light. If the radius of the arc-shaped light-transmitting panel is too small, it is not conducive to the manufacture of photovoltaic modules. Therefore, setting the radius of the arc structure between 30 mm and 150 mm can not only ensure the light dispersion effect but also facilitate the manufacture of photovoltaic modules.

[0050] In some possible designs, the photovoltaic module further includes: a first adhesive layer provided between the light-transmitting panel and the photovoltaic cell layer for bonding the light-transmitting panel and the photovoltaic cell layer; a second adhesive layer provided between the backsheet and the photovoltaic cell layer for bonding the backsheet and the photovoltaic cell layer.

[0051] In this design, the photovoltaic module further includes a first adhesive layer and a second adhesive layer. The first adhesive layer is provided between the light-transmitting panel and the photovoltaic cell layer to realize the bonding of the photovoltaic cell layer and the light-transmitting panel. The second adhesive layer is provided between the side of the photovoltaic cell layer facing the backsheet and the backsheet to realize the bonding of the photovoltaic cell layer and the backsheet, improving the connection reliability of the light-transmitting panel, the photovoltaic cell layer, and the backsheet.

[0052] In some possible designs, the first adhesive layer includes any one of EVA, POE, and PVB; and / or the second adhesive layer includes any one of EVA, POE, EPE, and PVB; and / or the backsheet is made of a flexible polymer backsheet material. Specifically, the backsheet includes any one of PET and composite materials of PET.

[0053] In this design, the first adhesive layer includes any one of ethylene-vinyl acetate copolymer (EVA), polyethylene (POE), and polyvinyl butyral (PVB), and the second adhesive layer includes any one of ethylene-vinyl acetate copolymer (EVA), polyethylene (POE), polyvinyl butyral (PVB), and EPE (polyethylene foam), so that the first adhesive layer and the second adhesive layer not only have a light-transmitting effect but also can achieve reliable adhesion. At the same time, the above materials can also ensure the ultraviolet shielding effect of the first adhesive layer and the second adhesive layer. The backsheet includes polyethylene terephthalate (PET) or a composite material of PET, which is light in weight and achieves a supporting effect. The light-transmitting panel includes a rigid light-transmitting plate, thereby avoiding the deformation of the photovoltaic module and ensuring the power conversion rate and the lighting effect.

[0054] Exemplarily, the thickness of the first adhesive layer and the second adhesive layer is 0.3 mm - 0.8 mm.

[0055] Exemplarily, the thickness of the backsheet is 0.3 mm - 0.7 mm.

[0056] Exemplarily, the photovoltaic cell layer is a crystalline silicon cell string layer, such as one of XBC, MWT (Metal Wrap Through, metal perforated winding high-efficiency back-contact cell), and the cells in the shingled structure without metal grid lines, where both the positive and negative metal electrodes are led out from the back. The interdigitated back contact crystalline silicon photovoltaic cell technology (IBC) is a type of photovoltaic cell, and the XBC cell is a new type of high-efficiency cell derived from the IBC cell structure, which is mainly a new cell based on the superposition of the IBC cell structure.

[0057] Exemplarily, there are grid line cell wafers on both the front and back sides of the crystalline silicon cell string layer, such as one of PERC (Passivated Emitter and Rear Cell), TOPCON (a type of solar cell, and lithium batteries are energy storage batteries), and HJT (crystalline silicon heterojunction solar cell).

[0058] According to the fifth aspect of the present invention, a roof is further proposed, including: a photovoltaic module as proposed in any of the above technical solutions.

[0059] According to the third aspect of the present application, a panel assembly is further proposed, and the panel assembly is prepared by using the preparation method provided in any one of the technical solutions of the first aspect.

[0060] The panel assembly according to the third aspect of the present invention is prepared by using the preparation method provided in any one of the technical solutions of the first aspect. Therefore, the panel assembly has all the beneficial effects of the above-mentioned preparation method.

[0061] According to the fourth aspect of the present application, a photovoltaic module is further provided, including the above panel assembly.

[0062] The photovoltaic module according to the fourth aspect of the present invention includes the panel assembly provided in any one of the technical solutions of the third aspect. Therefore, the photovoltaic module has all the beneficial effects of the above panel assembly.

[0063] The roof provided by the fifth aspect of the present invention includes the photovoltaic module proposed in any of the above technical solutions, and thus has all the beneficial effects of the photovoltaic module.

[0064] According to the sixth aspect of the present invention, a building is further provided, including: the photovoltaic module proposed in any of the above technical solutions or the roof proposed in any of the above technical solutions.

[0065] The building provided by the sixth aspect of the present invention includes the photovoltaic module proposed in any of the above technical solutions or the roof proposed in any of the above technical solutions, and thus has all the beneficial effects of the photovoltaic module or the roof.

[0066] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0067] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0068] Figure 1 is one of the schematic flowcharts of the preparation method of the panel assembly according to an embodiment of the present application;

[0069] Figure 2 is the second of the schematic flowcharts of the preparation method of the panel assembly according to an embodiment of the present application;

[0070] Figure 3 is a schematic diagram of a state during the preparation process of the panel assembly according to an embodiment of the present application;

[0071] Figure 4 is the schematic structural diagram of the panel assembly according to an embodiment of the present application;

[0072] Figure 5 is the schematic structural diagram of the photovoltaic module according to an embodiment of the present application.

[0073] Among them, Figures 3 to 5 the corresponding relationship between the reference numerals in the drawings and the component names is:

[0074] 100 photovoltaic module, 1 panel module, 12 light-transmitting panel, 14 coating, 2 photovoltaic cell layer, 3 backplane, 4 first adhesive layer, 5 second adhesive layer, 200 squeegee, 300 ink, 400 screen printing mold. Detailed implementation manners

[0075] Embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application and should not be construed as a limitation of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts belong to the scope of protection of the present application.

[0076] The following is combined with Figures 1 to 5 to describe a panel module, a method for preparing the same, a photovoltaic module, a roof and a building according to an embodiment of the present application.

[0077] A method for preparing a panel module according to a technical solution of the first aspect of the present application, the panel module is used for a photovoltaic module, and the preparation method is as Figure 1 shown and includes:

[0078] S102, select a light-transmitting panel, and the light-transmitting panel is tempered.

[0079] S104, screen-print a coating on the light-transmitting panel.

[0080] S106, perform a curing treatment on the coating.

[0081] The manufacturing method of the panel component provided by the technical solution of this application is used to manufacture the front panel of a photovoltaic module. During specific manufacturing, a tempered light-transmitting panel is directly selected to make the front panel of the photovoltaic module. Then, the required coating is screen-printed on the light-transmitting panel. With this setting, since a tempered light-transmitting panel is selected in advance, the strength of the light-transmitting panel is ensured, so that the light-transmitting panel after screen-printing no longer needs to be subjected to high-temperature tempering treatment (the tempering temperature is generally about 600 °C). In this way, while ensuring the strength of the prepared light-transmitting panel, it can be ensured that the color of the screen-printed coating will not be distorted. At the same time, with this setting, since the light-transmitting panel is not tempered after screen-printing, problems such as the screen-printing position shifting and the screen-printed pattern deforming due to the deformation of the light-transmitting panel at high temperature are avoided, thus ensuring the qualified rate of the prepared panel component. In addition, with this solution, since the light-transmitting panel is not tempered after screen-printing, the high-temperature resistance of the ink is reduced, making the selection of the ink more flexible. This not only reduces the cost of the ink, but also makes the color and material of the ink more diverse, thus meeting the different appearance requirements of the panel component.

[0082] Among them, the coating on the light-transmitting panel is used for decoration on the one hand and can also hide some components of the structure inside the panel, thus ensuring the aesthetics of the photovoltaic module.

[0083] Specifically, the photovoltaic module further includes a component to be blocked, and the coating includes a blocking coating provided corresponding to the component to be blocked.

[0084] In some possible designs, the photovoltaic cell layer includes a plurality of cell strings and busbars connecting the plurality of cell strings; the coating includes a first coating provided corresponding to the busbars. The first coating is part of the blocking coating.

[0085] In this embodiment, the coating includes a first coating provided corresponding to the busbars, and the first coating can block the busbars, so that the busbars can be hidden. In this way, on the one hand, the busbars can be prevented from being exposed to light for a long time and being deformed and damaged due to long-term exposure to light. On the other hand, the busbars are not exposed outside, which can improve the overall aesthetics of the front.

[0086] Among them, the cell strings are welded to the busbars, and the plurality of cell strings transmit electrical energy to external devices through the busbars; and / or the plurality of cell strings are electrically connected through the busbars.

[0087] In a possible design, the light-transmitting panel is a tempered light-transmitting panel, such as a fully tempered light-transmitting panel or a semi-tempered light-transmitting panel.

[0088] In this solution, the tempered light-transmitting panel is directly selected, so there is no need to temper the light-transmitting panel in advance, which simplifies the preparation process of the light-transmitting panel. The light-transmitting panel can be selected as tempered glass or semi-tempered glass according to needs.

[0089] In a possible design, the preparation method further includes: tempering the light-transmitting panel substrate to obtain the tempered light-transmitting panel.

[0090] In this technical solution, it is necessary to temper the light-transmitting panel in advance, so that the tempering process can be controlled according to actual needs, making the prepared light-transmitting panel more in line with requirements.

[0091] In a possible design, the thickness of the coating is greater than or equal to 20 μm and less than or equal to 50 μm.

[0092] Such a thickness of the coating can make the combination between the coating and the light-transmitting panel better, and can also avoid the cracking of the coating, thus ensuring that the coating is not easily damaged.

[0093] In a possible design, the light-transmitting panel is a curved light-transmitting panel.

[0094] In this technical solution, the shape of the light-transmitting panel will affect its light-receiving degree. By setting the light-transmitting panel as a curved light-transmitting panel, the area of the light-transmitting panel can be increased, making the contact area between the light-transmitting panel and light larger, thus increasing the power generation effect of the photovoltaic module.

[0095] In a possible design, when printing the coating on the light-transmitting panel, the screen printing mold used is a flexible screen printing mold. The shape of the flexible screen printing mold is adapted to the shape of the curved light-transmitting panel.

[0096] With this setting, screen printing of the curved light-transmitting panel can be achieved through the flexible screen printing mold, and the shape of the flexible screen printing mold is adapted to the shape of the curved light-transmitting panel, so that during screen printing, neither the curved light-transmitting panel nor the screen printing mold needs to move, and the screen printing can be completed at one time.

[0097] Furthermore, the curved light-transmitting panel is a multi-segment curved structure, that is, the curved light-transmitting panel includes at least one peak and valley. And the multi-segment curved light-transmitting panel has better daylighting performance.

[0098] In a possible design, the light-transmitting panel includes an arc-shaped light-transmitting panel, and the curve radius of the arc-shaped light-transmitting panel is greater than or equal to 30 mm and less than or equal to 150 mm.

[0099] Optionally, if the radius of the arc-shaped light-transmitting panel is too large, the wave peak position will be too gentle, which is not conducive to the dispersion of light. If the radius of the arc-shaped light-transmitting panel is too small, it is not conducive to the manufacture of photovoltaic modules. Therefore, the radius of the arc-shaped light-transmitting panel is set between 30 mm and 150 mm, which can not only ensure the light dispersion effect but also facilitate the manufacture of photovoltaic modules.

[0100] In a possible design, the light-transmitting panel is a tempered glass light-transmitting panel; and / or the light-transmitting panel includes a tempered light-transmitting panel or a semi-tempered light-transmitting panel.

[0101] With this setting, the light-transmitting panel is a glass light-transmitting panel, which can ensure the light transmittance of the light-transmitting panel and thus ensure the lighting effect of the photovoltaic module. When the light-transmitting panel is tempered, it can be fully tempered to form a fully tempered light-transmitting panel. It can also be semi-tempered to form a semi-tempered light-transmitting panel.

[0102] In a possible design, the step of curing the coating, i.e., S106, includes: sintering the light-transmitting panel with the coating. When sintering, the sintering temperature is greater than or equal to 140 °C and less than or equal to 150 °C, and the sintering time is greater than or equal to 30 min and less than or equal to 60 min.

[0103] In this technical solution, the coating can be quickly cured and stably combined with the light-transmitting panel through sintering treatment. Among them, when sintering, the temperature is between 140 °C and 150 °C, and the sintering time is 30 min to 60 min, which can ensure the bonding force between the coating and the light-transmitting panel.

[0104] In a possible design, the coating includes an ink coating, and the ink used in the ink coating includes at least one of pearlescent ink, metallic ink, magnetic ink, or photochromic ink.

[0105] In this technical solution, the coating on the light-transmitting panel can be prepared by ink. Ink is relatively common and thus easy to purchase. At the same time, the type of ink can be selected according to needs, such as pearlescent ink, metallic ink, magnetic ink, or photochromic ink, etc.

[0106] In a possible design, as Figure 2 shown, the method for preparing the panel assembly further includes:

[0107] S100, subject the light-transmitting panel to esterification treatment with an esterifying agent, where the esterifying agent includes: one of hexamethyldisiloxane, trimethylsiloxane, and dimethylchlorosilane.

[0108] In this embodiment, after the light-transmitting panel is cleaned, a sense esterification treatment can be performed on the light-transmitting panel. Among them, the esterifying agent can be one of hexamethyldisiloxane, trimethylsiloxane, and dimethylchlorosilane. Through the sense esterification treatment, the lipophilicity of the light-transmitting panel can be enhanced, thereby improving the bonding strength between the coating and the light-transmitting panel and reducing the risk of coating detachment.

[0109] In a possible design, the steps of screen-printing a coating on the light-transmitting panel include: designing a screen mold for the light-transmitting panel, where the length of the screen mold is greater than or equal to the length of the light-transmitting panel, and the width of the screen mold is the same as the width of the light-transmitting panel; after the light-transmitting panel is fixed, placing the screen mold on the surface of the light-transmitting panel to be screen-printed; applying ink on the screen mold; and using a squeegee to apply the ink on the screen mold to the light-transmitting panel.

[0110] In this technical solution, a screen mold with a corresponding pattern can be designed in advance according to the bending curvature, shape, arrangement of battery cells, and connection method of electrode grid lines of the light-transmitting panel. At the same time, ensure that the length of the screen mold is slightly longer than the length of the light-transmitting panel, and the width is basically the same as the light-transmitting panel, so that a coating that meets the requirements can be screen-printed through the screen mold at one time.

[0111] In a possible design, the running speed of the squeegee is 15 m / min - 30 m / min. Among them, the speed of the squeegee has a great influence on the formation quality of the coating. Especially for a curved light-transmitting panel, the quality of the coating at the peaks and valleys is closely related to the running speed of the squeegee. By setting the running speed of the squeegee to 15 m / min - 30 m / min, the quality of the screen-printed coating can be ensured, and the clarity of the coating boundary can be ensured.

[0112] In a possible design, the screen mold includes a flexible screen mold, which is prepared from at least one of polyurethane, polyester, or carbon fiber. The elongation rate of the flexible screen mold is less than 2%, the roughness Ra is less than 0.5 μm, the screen mesh number of the screen mold is greater than or equal to 100 and less than or equal to 500. This kind of flexible screen mold has good ductility and dimensional stability, thereby improving the screen-printing quality.

[0113] In a possible design, the squeegee is made of polyurethane rubber, the hardness of the squeegee is greater than or equal to 60 Shore and less than or equal to 80 Shore, and the width of the squeegee is less than the width of the screen mold. This kind of setting can ensure that the squeegee has good wear resistance and resilience, thereby improving the screen-printing quality.

[0114] According to the second aspect of the present application, a panel assembly is also proposed, and the panel assembly is prepared by using the preparation method provided in any technical solution of the first aspect. Among them, the structure of the prepared panel assembly is as Figure 4As shown, it includes a light-transmitting panel 12 and a coating 14 provided on the light-transmitting panel 12.

[0115] The panel assembly of the second aspect of the present invention is prepared by using the preparation method provided in any technical solution of the first aspect. Therefore, this panel assembly has all the beneficial effects of the above preparation method.

[0116] As Figure 5 shown, according to the third aspect of the present application, a photovoltaic module is further proposed, which includes the panel assembly provided in the second aspect.

[0117] The photovoltaic module of the third aspect of the present invention includes the panel assembly provided in any technical solution of the second aspect. Therefore, this photovoltaic module has all the beneficial effects of the above panel assembly.

[0118] As Figure 5 shown, the photovoltaic module 100 of the fourth aspect of the present invention includes: a panel assembly 1, including a light-transmitting panel 12 and a coating 14 provided on the first surface of the light-transmitting panel 12; a backsheet 3 provided on the second surface of the panel assembly 1; and a photovoltaic cell layer 2 provided between the panel assembly 1 and the backsheet 3. Among them, the panel assembly 1, the backsheet 3, and the photovoltaic cell layer 2 are all curved surface structures, and the shapes of the panel assembly 1, the backsheet 3, and the photovoltaic cell layer 2 are adapted to each other.

[0119] In this design, the photovoltaic module 100 further includes a light-transmitting panel 12 and a backsheet 3, and the photovoltaic cell layer 2 is provided between the light-transmitting panel 12 and the backsheet 3. The light-transmitting panel 12 and the backsheet 3 provide support for the photovoltaic cell layer 2, and the light-transmitting panel 12 can allow light to pass through, ensuring the lighting effect of the photovoltaic module 100. Among them, the light-transmitting panel 12, the backsheet 3, and the photovoltaic cell layer 2 are all curved surface structures, and the shapes of the three are adapted to each other, thereby making the photovoltaic module 100 form a curved surface structure.

[0120] Exemplarily, the coating 14 is a screen printing coating, which is formed on the light-transmitting panel 12 by screen printing.

[0121] Among them, the light-transmitting panel 12 is tempered, that is, the coating 14 of the present application is formed on the tempered panel. With this setting, since the tempered light-transmitting panel 12 is selected in advance, the strength of the light-transmitting panel 12 is ensured, so that the light-transmitting panel 12 after screen printing no longer needs to be subjected to high-temperature tempering treatment (the tempering temperature is generally about 600 °C). In this way, while ensuring the strength of the prepared light-transmitting panel 12, it can be ensured that the color of the screen-printed coating 14 will not be distorted. At the same time, with this setting, since the light-transmitting panel 12 is not tempered after screen printing, problems such as the deviation of the screen printing position and the deformation of the screen printing pattern caused by the deformation of the light-transmitting panel 12 at high temperature are avoided, thus ensuring the qualification rate of the prepared panel assembly 1. In addition, with this solution, since the light-transmitting panel 12 is not tempered after screen printing, the high-temperature resistance of the ink 300 is reduced. In this way, the selection of the ink 300 is more flexible, which not only reduces the cost of the ink 300, but also makes the color and material of the ink 300 more diverse, thus meeting the different appearance requirements of the panel assembly 1.

[0122] In some possible designs, the panel assembly 1, the back plate 3, and the photovoltaic cell layer 2 are all multi-segment curved surface structures. That is, the panel assembly 1, the back plate 3, and the photovoltaic cell layer 2 include at least one wave crest and wave trough. And the multi-segment structure has better lighting performance.

[0123] In some possible designs, the radius of curvature of the curved surface structure is greater than or equal to 30 mm and less than or equal to 150 mm. Among them, if the radius of the arc structure is too large, the wave crest position will be too flat, which is not conducive to the dispersion of light. If the radius of the arc-shaped light-transmitting panel 12 is too small, it is not conducive to the manufacture of the photovoltaic module 100. Therefore, setting the radius of the arc structure between 30 mm and 150 mm can not only ensure the light dispersion effect but also facilitate the manufacture of the photovoltaic module 100.

[0124] In some possible designs, the panel assembly 1 is prepared by using the preparation method of the above panel assembly.

[0125] Specifically, the photovoltaic module 100 further includes a component to be blocked, and the coating 14 includes a blocking coating provided corresponding to the component to be blocked.

[0126] In some possible designs, the photovoltaic cell layer 2 includes a plurality of cell strings and busbars connecting the plurality of cell strings; the coating 14 includes a first coating provided corresponding to the busbars. The first coating is part of the blocking coating.

[0127] In an embodiment, the coating includes a first coating provided corresponding to the bus bar. The first coating can form an occlusion for the bus bar, so that the bus bar can be prevented from being exposed outside, thereby realizing the hiding of the bus bar. On the one hand, this can avoid the bus bar being exposed to light for a long time and prevent the bus bar from being deformed and damaged due to long-term exposure to light. On the other hand, since the bus bar is not exposed outside, the overall aesthetics of the front can be improved.

[0128] Wherein, the battery strings are welded to the bus bar, and multiple battery strings transmit electric energy to external devices through the bus bar; and / or multiple battery strings are electrically connected through the bus bar.

[0129] In some possible designs, as Figure 5 shown, the photovoltaic module 100 further includes: a first adhesive layer 4 disposed between the light-transmitting panel 12 and the photovoltaic cell layer 2 for bonding the light-transmitting panel 12 and the photovoltaic cell layer 2; a second adhesive layer 5 disposed between the backsheet 3 and the photovoltaic cell layer 2 for bonding the backsheet 3 and the photovoltaic cell layer 2.

[0130] In this design, the photovoltaic module 100 further includes a first adhesive layer 4 and a second adhesive layer 5. The first adhesive layer 4 is disposed between the light-transmitting panel 12 and the photovoltaic cell layer 2 to realize the bonding of the photovoltaic cell layer 2 and the light-transmitting panel 12. The second adhesive layer 5 is disposed between the side of the photovoltaic cell layer 2 facing the backsheet 3 and the backsheet 3 to realize the bonding of the photovoltaic cell layer 2 and the backsheet 3, improving the connection reliability of the light-transmitting panel 12, the photovoltaic cell layer 2, and the backsheet 3.

[0131] In some possible designs, the first adhesive layer 4 includes any one of EVA, POE, and PVB; and / or the second adhesive layer 5 includes any one of EVA, POE, EPE, and PVB; and / or the backsheet 3 is made of a flexible polymer backsheet 3 material. Specifically, the backsheet 3 includes any one of PET and a composite material of PET.

[0132] In this design, the first adhesive layer 4 includes any one of ethylene-vinyl acetate copolymer (EVA), polyethylene (POE), and polyvinyl butyral (PVB). The second adhesive layer 5 includes any one of ethylene-vinyl acetate copolymer (EVA), polyethylene (POE), polyvinyl butyral (PVB), and EPE (polyethylene foam). This enables the first adhesive layer 4 and the second adhesive layer 5 to have both a light-transmitting effect and achieve reliable adhesion. At the same time, the above materials can also ensure the UV shielding effect of the first adhesive layer 4 and the second adhesive layer 5. The backsheet 3 includes polyethylene terephthalate (PET) or a composite material of PET, which is lightweight and achieves a supporting effect. The light-transmitting panel 12 includes a rigid light-transmitting plate, thereby preventing the photovoltaic module 100 from deforming and ensuring the power conversion efficiency and the lighting effect.

[0133] Exemplarily, the thickness of the first adhesive layer 4 and the second adhesive layer 5 is 0.3 mm - 0.8 mm.

[0134] Exemplarily, the thickness of the backsheet 3 is 0.3 mm - 0.7 mm.

[0135] Exemplarily, the photovoltaic cell layer 2 is a crystalline silicon cell string layer, such as one of XBC, MWT (Metal Wrap Through, a highly efficient back-contact cell with metal vias), and a cell in which there are no metal grid lines in the shingle and both the positive and negative metal electrodes are led out from the back. The interdigitated back contact crystalline silicon photovoltaic cell technology (IBC) is a type of photovoltaic cell. The XBC cell is a new type of high-efficiency cell derived from the IBC cell structure, which is mainly a brand-new cell based on the superposition of the IBC cell structure.

[0136] Exemplarily, both the front and back sides of the crystalline silicon cell string layer have grid line cell wafers, such as one of PERC (Passivated Emitter and Rear Cell), TOPCON (a type of solar cell, and a lithium battery is an energy storage battery), and HJT (crystalline silicon heterojunction solar cell).

[0137] Next, a specific example is used to further introduce the preparation method of the panel and the photovoltaic module in this application.

[0138] With the development of photovoltaic technology, the application of household photovoltaic solar panels is becoming an important sub-segment in the field of photovoltaic technology, such as the promotion of curved roof tiles, roof-integrated photovoltaic panels, glass curtain walls and other products. At present, the market requires photovoltaic panels to provide better light efficiency performance, as well as beautiful appearance and bright colors. Therefore, many photovoltaic glass products with silk-screen decoration have appeared on the market.

[0139] Most existing silk-screen printing technologies use ink for printing, which is then heated and dried to solidify, and then the silk-screen printed glass is tempered. During the tempering process, the ink is easily discolored and distorted by high temperature. If high-temperature ink printing is selected, the available colors are limited. In addition, for curved glass, the glass will become soft during the heating and tempering process after silk-screen printing. The silk-screen printing position of photovoltaic glass is prone to deviation or deformation and other abnormal problems, so it can only be scrapped, resulting in low yield and great waste.

[0140] In view of the defects that are difficult to handle in existing curved glass silk screen printing, we propose a curved glass silk screen printing method and a curved solar module using it, which solves the problem that the current printing method cannot adapt to curved glass and expands the application scenarios of curved crystalline silicon solar cell modules.

[0141] Among them, the specific preparation process structure diagram of the curved screen-printed tempered or semi-tempered glass in the embodiment of the present application is as follows: Figure 3 As shown. Among them, Figure 3 The following parts are included:

[0142] Scraper 200: The scraper material is required to be polyurethane rubber with good wear resistance and resilience, with a hardness of 60-80 Shore A, and the width should be smaller than the width of the screen mold.

[0143] Flexible screen mold 400: You can choose one of polyurethane, polyester or carbon fiber, which needs to have good ductility and dimensional stability, with an elongation of less than 2% and a roughness Ra of less than 0.5μm. The screen mesh number should be between 100 and 500;

[0144] Design a silk screen with corresponding patterns and customized patterns according to the curvature, shape, cell arrangement and electrode grid connection method of the curved glass. The length of the silk screen mold is slightly longer than the curved glass front plate, and the width is consistent with the curved glass front plate.

[0145] Applying ink to form a coating layer 14: The ink can specifically be one of pearlescent ink, metallic ink, magnetic ink or optically variable ink. Selecting inks of different materials can achieve different printing effects, and different colorants can achieve different customized colors such as black, white, blue, yellow, red, green, gold, etc. in silk screen printing.

[0146] The curved glass (i.e., the light-transmitting panel 12) is made of customized curved screen-printed tempered or semi-tempered glass, with a shape of a multi-peak and multi-valley arc surface and a curved surface radius of 30 mm - 150 mm.

[0147] Position the curved glass, and after cleaning, perform a sensitization esterification treatment. The esterifying agent can be one of hexamethyldisiloxane, trimethylsiloxane, and dimethylchlorosilane, which enhances the lipophilicity of the glass to improve the bonding strength between the ink and the glass after printing.

[0148] Place the selected ink on a flexible screen printing mold, and use a screen printing machine to print the screen printing mold on the curved glass. Use a squeegee to scrape the ink on the screen printing mold evenly. The ink coating thickness is 20 - 50 μm, and the screen printing speed is 15 m / min - 30 m / min.

[0149] The ink layer presents a grid shape, corresponding to the bending curvature, shape, battery cell arrangement, electrode grid connection method, and the position of the corresponding logo pattern of the curved glass.

[0150] Perform high-temperature sintering on the front plate of the screen-printed curved glass at a temperature of 140°C - 150°C and a drying time of 30 min - 60 min to quickly cure and form the ink and stably bond it to the glass surface.

[0151] The design of the encapsulation structure of the curved screen-printed glass photovoltaic solar module is as Figure 5 shown. It includes the following structures:

[0152] The light-transmitting panel 1, which is used to form the front plate layer, and the light-transmitting panel 1 is the above-mentioned customized curved screen-printed glass.

[0153] The first adhesive layer 4, specifically the first encapsulation adhesive film layer, is a high-cutoff encapsulation adhesive film, such as one of high-cutoff EVA, POE, EPE, or PVB adhesive films, with a thickness of 0.3 mm - 0.8 mm; ultraviolet light cutoff.

[0154] The crystalline silicon battery string layer (i.e., the photovoltaic cell layer 2) can be one of the batteries without metal grid lines in XBC, MWT, and shingled, where both the positive and negative metal electrodes are led out from the back, or it can also use battery cells with grid lines on both the front and back, such as one of PERC, TOPCON, and HJT.

[0155] The second adhesive layer 5, specifically the second encapsulation adhesive film layer, is a high-transparency encapsulation adhesive film, preferably one of high-cutoff EVA, POE, EPE, or PVB adhesive films, with a thickness of 0.3 mm - 0.8 mm.

[0156] The backplane 3 is a flexible polymer backplane material, such as PET or CPC or fiberglass composite material, with a thickness of 0.3 mm - 0.7 mm.

[0157] The photovoltaic module provided according to this embodiment has the following effects:

[0158] 1. Tempered curved glass is selected. According to the curvature, shape of the curved glass, the arrangement of solar cells, the connection mode of electrode grid lines, and the position of the corresponding logo pattern, local screen printing is realized through customized flexible screen printing mold design, achieving customized design, thereby improving the aesthetics of the product and endowing the photovoltaic module with high-quality and diverse performance characteristics.

[0159] 2. Selecting different inks can highlight different color visual effects and performance improvements. Pearlescent ink can enhance the transparent visual effect of the product, metallic ink can enhance the visual texture of the curved tile, and photochromic ink can change the color of the curved tile pattern under different light intensities, and the color richness of the curved tile is achieved by changing the colorant. The ink drying and curing process does not require high-temperature curing, avoiding color distortion of the ink during the high-temperature process.

[0160] 3. This solution uses a customized flexible screen printing template for printing, enabling the flexible screen printing plate to closely fit the curved glass, ensuring that precise printing can be completed on a continuous curved surface, solving the defect that traditional printing cannot achieve precise printing of curved products, and having the advantages of high printing efficiency and strong practicability.

[0161] According to the fifth aspect of the present invention, a roof (not shown in the figure) is further proposed, including: the photovoltaic module 100 as proposed in any of the above embodiments.

[0162] The roof provided by the fifth aspect of the present invention includes the photovoltaic module 100 as proposed in any of the above embodiments, and thus has all the beneficial effects of the photovoltaic module 100.

[0163] According to the sixth aspect of the present invention, a building (not shown in the figure) is further proposed, including: the photovoltaic module 100 as proposed in any of the above embodiments or the roof as proposed in any of the above embodiments.

[0164] The building provided by the sixth aspect of the present invention includes the photovoltaic module 100 as proposed in any of the above embodiments or the roof as proposed in any of the above embodiments, and thus has all the beneficial effects of the photovoltaic module 100 or the roof.

[0165] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. mean 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 this application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0166] Although the embodiments of this application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of this application, and the scope of this application is defined by the claims and their equivalents.

Claims

1. A preparation method of a panel component, characterized in that, The panel component is used for a photovoltaic module, and the preparation method includes: Select a light-transmitting panel, and the light-transmitting panel is tempered. Screen-print a coating on the light-transmitting panel. Carry out a curing treatment on the coating.

2. The preparation method of the panel assembly according to claim 1, characterized in that, The thickness of the coating is greater than or equal to 20 μm and less than or equal to 50 μm.

3. The preparation method of the panel component according to claim 1, wherein The light-transmitting panel is a curved light-transmitting panel. When screen-printing a coating on the light-transmitting panel, a flexible screen mold is used, and the shape of the flexible screen mold is adapted to the shape of the curved light-transmitting panel.

4. The preparation method of the panel component according to claim 3, wherein The light-transmitting panel includes an arc-shaped light-transmitting panel, and the curvature radius of the arc-shaped light-transmitting panel is greater than or equal to 30 mm and less than or equal to 150 mm.

5. The preparation method of the panel component according to claim 1, wherein The light-transmitting panel is a tempered glass light-transmitting panel; and / or The light-transmitting panel includes a tempered light-transmitting panel or a semi-tempered light-transmitting panel.

6. The preparation method of the panel component according to claim 1, characterized in that, The step of carrying out the curing treatment on the coating includes: Carry out a sintering treatment on the light-transmitting panel with the coating. During the sintering treatment, the sintering temperature is greater than or equal to 140 °C and less than or equal to 150 °C, and the sintering time is greater than or equal to 30 min and less than or equal to 60 min.

7. The preparation method of the panel assembly according to claim 1, characterized in that, The coating includes an ink coating, and the ink used in the ink coating includes at least one of pearlescent ink, metallic ink, magnetic ink or photochromic ink.

8. The manufacturing method of the panel assembly according to any one of claims 1 to 7, characterized in that, It further includes: Before the step of screen-printing a coating on the light-transmitting panel, carry out a sensitized esterification treatment on the light-transmitting panel with an esterifying agent, wherein the esterifying agent includes: one of hexamethyldisiloxane, trimethylsiloxane, dimethylchlorosilane.

9. The preparation method of the panel assembly according to any one of claims 1 to 7, characterized in that, The step of screen-printing a coating on the light-transmitting panel includes: Design a screen mold for the light-transmitting panel. The length of the screen mold is greater than or equal to the length of the light-transmitting panel, and the width of the screen mold is the same as the width of the light-transmitting panel. After the light-transmitting panel is fixed, place the screen mold on the surface of the light-transmitting panel to be screen-printed. Coat ink on the screen mold. Use a squeegee to apply the ink on the screen mold to the light-transmitting panel. Wherein, the running speed of the squeegee is 15 m / min - 30 m / min.

10. The preparation method of the panel component according to claim 9, wherein The screen mold includes a flexible screen mold, and the flexible screen mold is made of at least one of polyurethane, polyester or carbon fiber. The elongation rate of the flexible screen mold is less than 2%, the roughness Ra is less than 0.5 μm, and the screen mesh number of the screen mold is greater than or equal to 100 and less than or equal to 500.

11. The preparation method of the panel component according to claim 9, wherein The squeegee is made of polyurethane rubber. The hardness of the squeegee is greater than or equal to 60 Shore and less than or equal to 80 Shore, and the width of the squeegee is less than the width of the screen mold.

12. A photovoltaic module, characterized in that, It includes: The panel assembly includes a light-transmitting panel and a coating provided on the first surface of the light-transmitting panel, and the light-transmitting panel is tempered. The back plate is provided on the second surface of the panel assembly. The photovoltaic cell layer is provided between the panel assembly and the back plate. Wherein, the panel assembly, the back plate and the photovoltaic cell layer are all curved surface structures, and the shapes of the panel assembly, the back plate and the photovoltaic cell layer are adapted to each other.

13. The photovoltaic module according to claim 12, wherein The photovoltaic cell layer includes a plurality of cell strings and busbars connecting the plurality of cell strings. The coating includes a first coating provided corresponding to the busbars.

14. The photovoltaic module according to claim 12, wherein The panel assembly, the back plate and the photovoltaic cell layer are all multi-segment curved surface structures, and the radius of curvature of the curved surface structure is greater than or equal to 30 mm and less than or equal to 150 mm.

15. The photovoltaic module according to any one of claims 12 to 14, characterized in that It further includes: The first adhesive layer is provided between the light-transmitting panel and the photovoltaic cell layer for bonding the light-transmitting panel and the photovoltaic cell layer. The second adhesive layer is provided between the back plate and the photovoltaic cell layer for bonding the back plate and the photovoltaic cell layer. The first adhesive layer includes any one of EVA, POE, and PVB; and / or The second adhesive layer includes any one of EVA, POE, EPE, and PVB; and / or The thickness of the first adhesive layer is greater than or equal to 0.3 mm and less than or equal to 0.8 mm; and / or The thickness of the second adhesive layer is greater than or equal to 0.3 mm and less than or equal to 0.8 mm.

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