Photovoltaic components, photovoltaic modules and photovoltaic systems

Abstract

This application discloses a photovoltaic component, a photovoltaic module, and a photovoltaic system. The photovoltaic component has a light-receiving side and a backlight side facing away from each other, and includes a first cover plate, a second cover plate, and a battery layer. The first cover plate is located on the light-receiving side; the second cover plate is located on the backlight side, and the second cover plate and the first cover plate are stacked together; the battery layer is used to convert light energy into electrical energy, and the battery layer is disposed between the first cover plate and the second cover plate. The battery layer includes a first side and a second side facing away from each other. The first side of the battery layer is opposite to the first cover plate and has a color layer. The color layer is a textured pattern, and the color of the textured pattern is the same as the color of the battery layer. Alternatively, the color layer contains a colored material, and the color of the colored material is the same as the color of the battery layer. In this application, when the photovoltaic component is exposed to sunlight for a long time, the color layer can protect the bonding material (e.g., an adhesive film) between the first cover plate and the battery layer, reducing the possibility of adhesive film aging and damage, and improving the stability and reliability of the photovoltaic component structure.

Description

Technical Field

[0001] This application relates to the field of photovoltaic technology, and more specifically, to a photovoltaic device, photovoltaic module, and photovoltaic system. Background Technology

[0002] With increasing awareness of renewable energy utilization, photovoltaic (PV) power generation, as one of the main methods of solar energy utilization, has been widely applied. Currently, PV devices can be installed on rooftops or other structures to convert solar energy into electricity, achieving energy conservation and environmental protection. In related technologies, a PV device includes two cover plates and solar cells, with the cells positioned between the two cover plates via an adhesive film. However, because the cover plates are typically made of translucent materials, when exposed to sunlight for extended periods, most of the ultraviolet rays in sunlight directly act on the adhesive film, causing it to age and deteriorate, affecting the stability and reliability of the PV device structure. Utility Model Content

[0003] This application provides a photovoltaic device, a photovoltaic module, and a photovoltaic system to solve at least one of the aforementioned technical problems.

[0004] The photovoltaic device according to this application has a light-receiving side and a backlighting side facing away from each other, and includes a first cover plate, a second cover plate, and a battery layer. The first cover plate is located on the light-receiving side; the second cover plate is located on the backlighting side, and the second cover plate is stacked with the first cover plate; the battery layer is used to convert light energy into electrical energy, and the battery layer is disposed between the first cover plate and the second cover plate. The battery layer includes a first side and a second side facing away from each other. The first side of the battery layer is opposite to the first cover plate and has a color layer. The color layer is a textured pattern, and the color of the textured pattern is the same as the color of the battery layer, or the color layer contains a colored material, and the color of the colored material is the same as the color of the battery layer.

[0005] In some embodiments, the color layer is a textured pattern formed on the side of the first cover plate facing the backlight by at least one of screen printing, printing, roller brushing, hot pressing and coating.

[0006] In some embodiments, the color layer is a texture pattern, and the texture pattern is a bar pattern; the width of the bar pattern is greater than or equal to 0.10 mm and less than or equal to 0.50 mm.

[0007] In some embodiments, the color layer is a texture pattern, and the texture pattern is a bar pattern; the bar pattern includes at least two, and the spacing between two adjacent bar patterns is greater than or equal to 0.10 mm and less than or equal to 0.20 mm.

[0008] In some embodiments, the photovoltaic element further includes a first adhesive film and a second adhesive film, wherein the first adhesive film is connected between the first cover plate and the battery layer, and the second adhesive film is connected between the second cover plate and the battery layer.

[0009] In some embodiments, the color layer contains a colored material; the first cover plate is the color layer.

[0010] In some embodiments, the color layer contains a colored material; the first adhesive film is the color layer.

[0011] In some embodiments, the color layer contains a colored material; the color layer is disposed between the first cover plate and the first adhesive film.

[0012] In some embodiments, the color layer contains a colored material; the color layer is disposed on the side of the first cover plate opposite to the first adhesive film.

[0013] In some embodiments, the cross-sectional dimension of the first cover plate is equal to the sum of the cross-sectional dimensions of the color layer and the battery layer.

[0014] In some embodiments, the photovoltaic device further includes a junction box located on the backlight side and electrically connected to the battery layer.

[0015] The photovoltaic module of this application includes the photovoltaic element described in any of the above embodiments.

[0016] The photovoltaic system of this application includes the photovoltaic module described in any of the above embodiments.

[0017] In the photovoltaic device, photovoltaic module, and photovoltaic system of this application, the battery layer is disposed between a first cover plate and a second cover plate. The battery layer includes a first side and a second side facing away from each other. The first side of the battery layer is opposite to the first cover plate and has a color layer. The color layer is a textured pattern, and the color of the textured pattern is the same as the color of the battery layer. Alternatively, the color layer contains a colored material, and the color of the colored material is the same as the color of the battery layer. Thus, when the photovoltaic device is exposed to sunlight for a long time, the color layer can protect the connecting material (e.g., an adhesive film) between the first cover plate and the battery layer, preventing ultraviolet rays in sunlight from directly irradiating the adhesive film. This reduces the amount of ultraviolet rays acting on the adhesive film, lowers the possibility of aging and damage to the adhesive film, and improves the stability and reliability of the photovoltaic device structure.

[0018] Additional aspects and advantages of embodiments of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of embodiments of this application. Attached Figure Description

[0019] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, wherein:

[0020] Figure 1 This is a three-dimensional structural schematic diagram of a photovoltaic system according to certain embodiments of this application;

[0021] Figure 2 yes Figure 1 The diagram shows a planar structural schematic of the photovoltaic element of the photovoltaic module in the photovoltaic system from one perspective.

[0022] Figure 3 yes Figure 1 A schematic diagram of the planar structure of the photovoltaic components of the photovoltaic module in the photovoltaic system shown from another perspective;

[0023] Figure 4 yes Figure 1 An exploded view of the photovoltaic components in a photovoltaic system.

[0024] Figure 5 yes Figure 1 Another exploded view of the photovoltaic components of the photovoltaic module in the photovoltaic system shown.

[0025] Explanation of key component symbols:

[0026] 1000 photovoltaic systems;

[0027] 100 photovoltaic modules; 300 supporting modules;

[0028] 10 Photovoltaic component; 101 Light-receiving side, 103 Backlight side; 11 Battery layer, 111 First side, 113 Second side; 12 Color layer; 13 First cover plate; 14 Second cover plate; 15 First encapsulant film; 16 Second encapsulant film; 17 Junction box; 18 Electrical connector. Detailed Implementation

[0029] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein 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 accompanying drawings are exemplary and are only used to explain the embodiments of this application, and should not be construed as limiting the embodiments of this application.

[0030] In the description of this application, it should be understood that the terms "thickness," "upper," "top," "bottom," "inner," "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0031] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation", "connection" and "linkage" should be interpreted broadly. In one example, they can be a fixed connection, a detachable connection, or an integral connection; they can be a mechanical connection, an electrical connection, or a connection that allows communication between them; they can be a direct connection or an indirect connection through an intermediate medium; they can be the internal connection of two elements or the interaction between two elements.

[0032] With increasing awareness of renewable energy utilization, photovoltaic (PV) power generation, as one of the main methods of solar energy utilization, has been widely applied. Currently, PV devices can be installed on rooftops or other structures to convert solar energy into electricity, achieving energy conservation and environmental protection. In related technologies, a PV device includes two cover plates and solar cells, with the cells positioned between the two cover plates via an encapsulating film. However, because the cover plates are typically made of translucent materials, when exposed to sunlight for extended periods, most of the ultraviolet radiation from the sun directly affects the encapsulating film, causing it to age and deteriorate, thus impacting the stability and reliability of the PV device structure. Please refer to [link / reference]. Figure 1 To address the aforementioned issues, this application provides a photovoltaic module 10, a photovoltaic device 100, and a photovoltaic system 1000.

[0033] Please see Figure 1 The photovoltaic system 1000 of this application includes photovoltaic modules 100. It should be noted that, in some embodiments, the photovoltaic system 1000 may include, but is not limited to, photovoltaic houses, photovoltaic carports, ground power stations, and floating photovoltaic systems.

[0034] Furthermore, in some embodiments, the photovoltaic system 1000 further includes a support component 300, on which the photovoltaic module 100 is disposed. Specifically, in some embodiments, the photovoltaic module 100 can be installed on the support component 300 using a detachable connection method, which facilitates the removal of the photovoltaic module 100 from the support component 300 when maintenance or replacement is required. The detachable connection method includes, but is not limited to, bolt connections and snap-fit ​​connections. In other embodiments, the photovoltaic module 100 can be installed on the support component 300 using a non-detachable connection method, which improves the connection strength between the photovoltaic module 1000 and the support component 300, enhances the photovoltaic system 1000's ability to resist external environmental factors, and ensures the stability and reliability of the photovoltaic system 1000's operation. The non-detachable connection method includes, but is not limited to, bonding or welding.

[0035] Understandably, the support component 300 is a structure within the photovoltaic system 1000 used to fix, support, and adjust the photovoltaic module 100, ensuring that the photovoltaic module 100 can receive sunlight at an optimal angle and position, while also resisting the effects of environmental factors (such as wind, rain, and snow). The photovoltaic module 100 is a collection of devices within the photovoltaic system 1000 used to convert solar energy into electrical energy. Specifically, the photovoltaic module 100 converts solar energy into electrical energy, achieving sustainable energy utilization. The photovoltaic module 100 does not produce greenhouse gases such as carbon dioxide or pollutants during power generation, resulting in a low environmental impact. The photovoltaic module 100 helps reduce dependence on traditional energy sources, mitigating air pollution and climate change issues. The photovoltaic module 100 can be distributed and installed in various locations, such as rooftops, wastelands, and farmland, fully utilizing solar energy resources. This distributed layout helps reduce transmission losses and improves the stability and disaster resistance of the power system. The photovoltaic module 100 can be combined and expanded as needed, suitable for power generation systems of various sizes and requirements.

[0036] For example, the support component 300 may include structural components such as columns, beams, and purlins to provide a stable support platform for the photovoltaic module 100, enabling the photovoltaic module 100 to be installed on a roof, other locations on a building besides the roof, or other carriers. In some embodiments of this application, the photovoltaic system 1000 includes a photovoltaic roof. In this case, the support component 300 may be purlins installed on the roof, and the photovoltaic module 100 can be installed on the roof via the support component 300 to collectively form a photovoltaic roof.

[0037] In some embodiments, the photovoltaic system 1000 further includes an energy storage component electrically connected to the photovoltaic module 100. The energy storage component can store the electrical energy generated by the photovoltaic module 100 and power loads such as household appliances and portable devices. Alternatively, the photovoltaic module 100 can directly power loads such as household appliances and portable devices. The energy storage component and the photovoltaic module 100 can be electrically connected via cables or through intermediate devices such as junction boxes or busbars. It should be noted that in some embodiments, the energy storage component can be not only a lithium-ion battery, lead-acid battery, or other types of rechargeable batteries, but also a supercapacitor or other component capable of storing and releasing electrical energy.

[0038] Since the photovoltaic system 1000 in this embodiment includes a photovoltaic module 100, it is understood that the photovoltaic system 1000 includes at least the same beneficial effects as the photovoltaic module 100. Therefore, for the beneficial effects of the photovoltaic system 1000, please refer to the beneficial effects of the photovoltaic module 100 described below.

[0039] Please see Figures 1 to 3 The photovoltaic module 100 of the present application includes a photovoltaic element 10.

[0040] Furthermore, in some embodiments, the photovoltaic element 10 includes at least two photovoltaic elements 10, which are connected to each other. Specifically, at least two photovoltaic elements 10 can be connected together in a specific direction by overlapping or splicing to form an integral module (i.e., photovoltaic module 100). When the photovoltaic system 1000 includes a photovoltaic house, the user can install the integral module on the roof or other carrier using the support component 300, which can effectively improve installation efficiency while maximizing power generation. Moreover, forming at least two photovoltaic modules 100 into an integral module first, and then installing the integral module on the roof using the support component 300, can reduce high-altitude work on the roof and improve safety.

[0041] For example, at least two photovoltaic modules 10 are connected to each other by overlapping, which makes the connection between adjacent photovoltaic modules 10 faster and more convenient, and facilitates the installation and disassembly of photovoltaic modules 10. This allows for faster and more efficient completion of work during installation and maintenance, improving work efficiency. In addition, at least two photovoltaic modules 10 can also be connected using fasteners (such as bolts) while overlapping, making the assembled photovoltaic module 100 more stable and improving the stability and reliability of the photovoltaic module 100.

[0042] It should be noted that in some embodiments, at least two photovoltaic elements 10 may have the same shape and size, or they may be different. Users can select photovoltaic elements 10 with appropriate shapes and sizes according to specific usage requirements. For example, to accommodate the size of the carrier, users can select at least two photovoltaic elements 10 of different sizes.

[0043] Since the photovoltaic module 100 in this embodiment includes the photovoltaic element 10, it is understood that the photovoltaic module 100 includes at least the same beneficial effects as the photovoltaic element 10. Therefore, for the beneficial effects of the photovoltaic module 100, please refer to the beneficial effects of the photovoltaic element 10 described below.

[0044] Please see Figures 2 to 5 The photovoltaic component 10 of this application embodiment has a light-receiving side 101 and a backlighting side 103 facing away from each other, and includes a first cover plate 13, a second cover plate 14, and a battery layer 11. The first cover plate 13 is located on the light-receiving side 101; the second cover plate 14 is located on the backlighting side 103, and the second cover plate 14 and the first cover plate 13 are stacked together; the battery layer 11 is used to convert light energy into electrical energy, and the battery layer 11 is disposed between the first cover plate 13 and the second cover plate 14. The battery layer 11 includes a first side 111 and a second side 113 facing away from each other. The first side 111 of the battery layer 11 is opposite to the first cover plate 13 and has a color layer 12. The color layer 12 is a textured pattern, and the color of the textured pattern is the same as the color of the battery layer. Alternatively, the color layer 12 contains a colored material, and the color of the colored material is the same as the color of the battery layer 11.

[0045] It is understood that the photovoltaic element 10 is a component in the photovoltaic module 100 used to convert light energy into electrical energy. Users can select photovoltaic elements 10 with different efficiencies and sizes based on their usage needs and environmental conditions. For example, the photovoltaic element 10 can have a planar or curved shape to adapt to different user needs, thereby better utilizing solar energy and improving the power generation efficiency of the photovoltaic element 10.

[0046] In some embodiments of this application, the photovoltaic element 10 has a light-receiving side 101 and a backlighting side 103 facing away from each other. The light-receiving side 101 is the side of the photovoltaic element 10 that directly faces the sun, receives sunlight, and completes photoelectric conversion. The backlighting side 103 is the side of the photovoltaic element 10 that faces away from the sun. The photovoltaic element 10 may have only the light-receiving side 101 receiving sunlight and converting it into electrical energy to generate electricity; or, both the light-receiving side 101 and the backlighting side 103 of the photovoltaic element 10 may receive sunlight and convert it into electrical energy to generate electricity (for example, the backlighting side 103 may receive ground-reflected light).

[0047] The first cover plate 13 and the second cover plate 14 are both structural components in the photovoltaic element 10 that serve to support and protect it. Specifically, the first cover plate 13 and the second cover plate 14 can jointly protect the battery layer 11 and other internal structural components of the photovoltaic element 10 from external physical impacts and environmental erosion, reducing the possibility of damage to the photovoltaic element 10. Furthermore, the arrangement of the first cover plate 13 and the second cover plate 14 can also improve the structural strength of the photovoltaic element 10, enhance its resistance to deformation, and improve the operational stability of the photovoltaic element 10. It should be noted that in some embodiments, the first cover plate 13 and the second cover plate 14 can be made of at least one of the following materials: glass, PET, metal, composite fiber, etc. Among them, the cover plate located at least on the light-receiving side 101 of the photovoltaic element 10 (i.e., the first cover plate 13) needs to be made of a light-transmitting material.

[0048] The battery layer 11 is a structural component in the photovoltaic element 10 used to convert light energy into electrical energy. The battery layer 11 may include at least one of the following: silicon solar cells, thin-film solar cells, organic polymer solar cells, and nanocrystalline solar cells. The battery layer 11 includes at least one battery. Exemplarily, when the battery layer 11 includes multiple batteries, the multiple batteries can be connected in series or parallel via cables. It should be noted that when both the light-receiving side 101 and the backlight side 103 of the photovoltaic element 10 can receive sunlight, the battery layer 11 may include bifacial batteries, which can achieve bifacial power generation to improve power generation efficiency. In some embodiments of this application, in the direction from the light-receiving side 101 to the backlight side 103, the battery layer 11 includes a first side 111 and a second side 113 facing away from each other. The first side 111 of the battery layer 11 can be connected to the first cover plate 13, and the second side 113 of the battery layer 11 can be connected to the second cover plate 14.

[0049] Furthermore, please combine Figure 4 or Figure 5 In some embodiments, the photovoltaic element 10 further includes a first adhesive film 15 and a second adhesive film 16. The first adhesive film 15 is connected between the first cover plate 13 and the battery layer 11, and the second adhesive film 16 is connected between the second cover plate 14 and the battery layer 11. Specifically, in the direction from the light-receiving side 101 to the backlight side 103, the first cover plate 13, the first adhesive film 15, the battery layer 11, the second adhesive film 16, and the second cover plate 14 are sequentially stacked. The arrangement of the first cover plate 13 and the second cover plate 14 can provide protection for the internal components of the photovoltaic element 10, such as the battery layer 11, reduce the possibility of damage to the photovoltaic element 10, and ensure the normal operation of the photovoltaic element 10.

[0050] The first adhesive film 15 and the second adhesive film 16 are both structural components in the photovoltaic element 10 that serve a connecting function. Specifically, the first adhesive film 15 connects the first side 111 of the battery layer 11 and the first cover plate 13, and the second adhesive film 16 connects the second side 113 of the battery layer 11 and the second cover plate 14. Thus, the arrangement of the first adhesive film 15 and the second adhesive film 16 enables the photovoltaic element 10 to form a stable and robust structure, improving the overall structural stability. It should be noted that in some embodiments, the first adhesive film 15 and the second adhesive film 16 can both be made of at least one of the following materials: EVA, POE, PVB, and UV-curable adhesive.

[0051] In some embodiments of this application, the color layer 12 is a textured pattern, and the color of the textured pattern is the same as the color of the battery layer 11; or, the color layer 12 contains a colored material, and the color of the colored material is the same as the color of the battery layer 11. For example, when the battery layer 11 is gray, the textured pattern or colored material is also gray. Therefore, the color layer 12 can improve the appearance consistency of the photovoltaic component 10, that is, the overall appearance of the photovoltaic component 10 can present a color consistent with the battery layer 11, thereby improving the aesthetics of the photovoltaic component 10. It is understood that in some embodiments, the color of the textured pattern or colored material can also be similar to the color of the battery layer 11. For example, the color of the textured pattern or colored material and the color of the battery layer 11 are colors of the same color family, which can also reduce visual defects in the photovoltaic component 10 and improve its aesthetics.

[0052] The color layer 12 is disposed on the first side 111 of the battery layer 11, that is, on the light-receiving side 101. Therefore, the color layer 12 can block light (such as sunlight), preventing excessive ultraviolet radiation from reaching the first adhesive film 15 and causing it to age and be damaged, thus improving the stability and reliability of the photovoltaic component 10 structure. It should be noted that in some embodiments, the color layer 12 includes at least one, and at least one color layer 12 is disposed on the light-receiving side 101.

[0053] In the photovoltaic component 10 of this application embodiment, the battery layer 11 is disposed between the first cover plate 13 and the second cover plate 14. The battery layer 11 includes a first side 111 and a second side 113 facing away from each other. The first side 111 of the battery layer 11 is opposite to the first cover plate 13 and has a color layer 12. The color layer 12 is a textured pattern, and the color of the textured pattern is the same as the color of the battery layer. Alternatively, the color layer 12 contains a colored material, and the color of the colored material is the same as the color of the battery layer 11. Thus, when the photovoltaic component 10 is exposed to sunlight for a long time, the color layer 12 can protect the connecting material (e.g., the first adhesive film 15) between the first cover plate 13 and the battery layer 11, preventing ultraviolet rays in sunlight from directly irradiating the first adhesive film 15, thereby reducing the amount of ultraviolet rays acting on the first adhesive film 15, reducing the possibility of aging and damage to the first adhesive film 15, and improving the stability and reliability of the photovoltaic component 10 structure.

[0054] Furthermore, the color layer 12 enhances the appearance consistency of the photovoltaic element 10, ensuring that its overall appearance matches the color of the battery layer 11, thereby improving its aesthetics. Additionally, the color layer 12 allows the photovoltaic element 10 to better integrate with the external structure, ensuring that its color matches the external structure (such as the support component 300), thus reducing visual imperfections and improving the overall aesthetics of the photovoltaic system 1000. For example, in the case where the photovoltaic system 1000 includes a photovoltaic house, the color layer 12 further enhances the color matching between the photovoltaic element 10 and the roof structure, improving the overall aesthetics of the photovoltaic system 1000.

[0055] The photovoltaic element 10 will be further explained below with reference to the accompanying drawings.

[0056] Please see Figure 2 and Figure 3 and combined Figure 4 or Figure 5 In some embodiments, the projection of the color layer 12 on the first cover plate 13 in the direction from the light-receiving side 101 to the backlight side 103 surrounds the projection of the battery layer 11 on the first cover plate 13.

[0057] Specifically, in some embodiments, the shape and size of the cross-section of the first adhesive film 15 cut by the first plane (a plane perpendicular to the direction from the light-receiving side 101 to the backlight side 103) can be the same as the shape and size of the cross-section of the first cover plate 13 cut by the first plane. Wherein, when the projection of the color layer 12 onto the first cover plate 13 surrounds the projection of the battery layer 11 onto the first cover plate 13, the color layer 12 can provide protection for a portion of the first adhesive film 15, preventing excessive ultraviolet radiation from irradiating the first adhesive film 15 and causing aging and damage, thereby improving the stability and reliability of the photovoltaic element 10 structure.

[0058] Furthermore, the projection of the color layer 12 onto the first cover plate 13 surrounds the projection of the battery layer 11 onto the first cover plate 13, which can also prevent the color layer 12 from blocking the light shining on the battery layer 11, ensuring that more light can act on the battery layer 11 and improving the power generation efficiency of the photovoltaic device 10. It should be noted that, in some embodiments, when the battery layer 11 includes multiple battery cells, the projection of the color layer 12 onto the first cover plate 13 can surround the projections of the multiple battery cells onto the first cover plate 13.

[0059] In other embodiments, the projection of the color layer 12 on the first cover plate 13 covers the projection of the first adhesive film 15 on the first cover plate 13 in the direction from the light-receiving side 101 to the backlight side 103.

[0060] Specifically, in some embodiments, the shape and size of the cross-section of the first adhesive film 15 cut by the first plane (a plane perpendicular to the direction from the light-receiving side 101 to the backlight side 103) can be the same as the shape and size of the cross-section of the first cover plate 13 cut by the first plane. The projection of the color layer 12 onto the first cover plate 13 covers the projection of the first adhesive film 15 onto the first cover plate 13. That is, the color layer 12 can protect the entire first adhesive film 15, preventing excessive ultraviolet radiation from causing aging and damage to the first adhesive film 15, thereby improving the stability and reliability of the photovoltaic component 10 structure.

[0061] Furthermore, when the projection of the color layer 12 on the first cover plate 13 covers the projection of the first adhesive film 15 on the first cover plate 13, the color layer 12 can also protect the battery layer 11, preventing the battery layer 11 from overheating due to excessive external light. This ensures the stable operation of the photovoltaic element 10 and improves the power generation efficiency of the photovoltaic element 10. On the other hand, it can prevent the photovoltaic element 10 from overheating and damage, and extend the service life of the photovoltaic element 10.

[0062] In this embodiment, the projection of the color layer 12 on the first cover plate 13 in the direction from the light-receiving side 101 to the backlight side 103, and the projection of the battery layer 11 on the first cover plate 13 are used as examples for illustration.

[0063] Please see Figure 2 and combined Figure 4In some embodiments, the color layer 12 contains a colored material; the first cover plate 13 is the color layer 12. That is, the first cover plate 13 contains a colored material, and the color of the colored material is the same as the color of the battery layer 11. Thus, when external light passes through the first cover plate 13 to the first adhesive film 15, the first cover plate 13 can block the external light, preventing excessive ultraviolet radiation from irradiating the first adhesive film 15 and causing it to age and be damaged, thereby improving the stability and reliability of the photovoltaic component 10 structure.

[0064] Please combine Figure 4 In some embodiments, the color layer 12 contains a colored material; the first adhesive film 15 is the color layer 12. That is, the first adhesive film 15 contains a colored material, and the color of the colored material is the same as the color of the battery layer 11, thereby improving the appearance consistency of the photovoltaic component 10, so that the overall appearance of the photovoltaic component 10 can present the same color as the battery layer 11, thereby improving the aesthetics of the photovoltaic component 10.

[0065] Please combine Figure 5 In some embodiments, the color layer 12 contains a colored material; the color layer 12 is disposed between the first cover plate 13 and the first adhesive film 15. Thus, the first cover plate 13 can protect the color layer 12, reduce the possibility of damage to the color layer 12 (e.g., scratches), ensure the normal protective function of the color layer 12 on the first adhesive film 15, and reduce the possibility of aging and damage to the first adhesive film 15.

[0066] In other embodiments, the color layer 12 includes a colored material; the color layer 12 is disposed on the side of the first cover plate 13 facing away from the first adhesive film 15. That is, the color layer 12 is disposed on the outermost side of the photovoltaic element 10 (the side of the photovoltaic element 10 facing the sun). Thus, the color layer 12 can block ultraviolet rays in sunlight, reducing the amount of ultraviolet rays acting on the first adhesive film 15, decreasing the possibility of aging and damage to the first adhesive film 15, and improving the stability and reliability of the photovoltaic element 10 structure.

[0067] Furthermore, in some embodiments, when the color layer 12 is disposed between the first cover plate 13 and the first adhesive film 15; or when the color layer 12 is disposed on the side of the first cover plate 13 opposite to the first adhesive film 15, the cross-sectional dimension of the first cover plate 13 is equal to the sum of the cross-sectional dimension of the color layer 12 and the cross-sectional dimension of the battery layer 11. In this case, in the direction from the light-receiving side 101 to the backlight side 103, the projection of the color layer 12 on the first cover plate 13 surrounds the projection of the battery layer 11 on the first cover plate 13. Thus, the color layer 12 can protect part of the first adhesive film 15, preventing excessive ultraviolet radiation from irradiating the first adhesive film 15 and causing aging and damage to the first adhesive film 15, thereby improving the stability and reliability of the photovoltaic element 10 structure.

[0068] In some embodiments, the color layer 12 is a textured pattern, which is formed on the side of the first cover plate 13 facing the battery layer 11 by at least one of the processes of screen printing, printing, roller brushing, hot pressing, and coating. Thus, the first cover plate 13 can protect the textured pattern, reducing the possibility of the textured pattern peeling off or being damaged (e.g., scratched), ensuring the proper protective function of the color layer 12 on the first adhesive film 15, and reducing the possibility of the first adhesive film 15 aging and becoming damaged. Of course, in other embodiments, the color layer 12 is a textured pattern, which can also be formed on the side of the first cover plate 13 facing away from the battery layer 11 by at least one of the processes of screen printing, printing, roller brushing, hot pressing, and coating.

[0069] It is understandable that, since the first cover plate 11 is made of a light-transmitting material, when the color layer 12 is disposed between the first cover plate 13 and the first adhesive film 15, when the color layer 12 is disposed on the side of the first cover plate 13 facing away from the first adhesive film 15, or when the color layer 12 includes a textured pattern formed on the side of the first cover plate 13 facing the battery layer 11, the color or texture presented by the color layer 12 can be seen by the user. This makes the color or texture presented by the photovoltaic component 10 more consistent with the color or texture presented by the external structure, thereby reducing visual defects and improving the photovoltaic system 1000 ( Figure 1 (As shown) Aesthetics.

[0070] In some embodiments of this application, the texture pattern can be a bar pattern, a honeycomb pattern, a circular pattern, etc. Specifically, in some embodiments, the texture pattern is a bar pattern, and the width of the bar pattern is greater than or equal to 0.10 mm and less than or equal to 0.50 mm. It should be noted that in some embodiments, the width of the bar pattern can be any one of 0.10 mm, 0.15 mm, 0.20 mm, 0.25 mm, 0.30 mm, 0.35 mm, 0.40 mm, 0.45 mm, and 0.50 mm, or any value between any two of these values.

[0071] The width of the stripes is greater than or equal to 0.10 mm and less than or equal to 0.50 mm. This ensures the uniformity of the color in the pattern and prevents the stripes from being too wide, which would result in a "zebra stripe" appearance. It also prevents the stripes from being too narrow, which would make the process more difficult and thus reduce production costs.

[0072] In some embodiments, the texture pattern is a bar pattern; the bar pattern includes at least two bars, and the spacing between two adjacent bars is greater than or equal to 0.10 mm and less than or equal to 0.20 mm. It should be noted that in some embodiments, the spacing between two adjacent bars can be any one of 0.10 mm, 0.11 mm, 0.12 mm, 0.13 mm, 0.14 mm, 0.15 mm, 0.16 mm, 0.17 mm, 0.18 mm, 0.19 mm, and 0.20 mm, or any value between any two values.

[0073] The spacing between two adjacent stripes is greater than or equal to 0.10 mm and less than or equal to 0.20 mm. This ensures the uniformity of the color presented by at least two stripes and prevents the stripes from appearing too prominent due to excessive spacing between two adjacent stripes. This reduces visual defects and improves the aesthetics of the photovoltaic component 10.

[0074] In addition, the spacing between two adjacent stripes is greater than or equal to 0.10 mm and less than or equal to 0.20 mm, which can also prevent the spacing between two adjacent stripes from being too large, causing external light (such as sunlight) to easily shine through the gap between the two adjacent stripes onto the first adhesive film 15, thereby reducing the possibility of aging and damage to the first adhesive film 15 and improving the stability and reliability of the photovoltaic component 10 structure.

[0075] Please see Figure 2 and Figure 3 In some embodiments, the photovoltaic element 10 further includes a junction box 17, which is located on the backlight side 103 and electrically connected to the battery layer 11.

[0076] Understandably, the junction box 17 is a component in the photovoltaic module 10 that serves as an electrical connection. The junction box 17 can be electrically connected to the battery layer 11 and the energy storage module to form a complete electrical circuit, enabling the electrical energy generated by the photovoltaic module 10 to be transmitted to the energy storage module. The junction box 17 is located on the backlight side 103, which reduces the possibility of liquids or dust entering the junction box 17, preventing short circuits or corrosion, extending the service life of the junction box 17, and ensuring the stable operation of the photovoltaic module 100 in harsh environments. Furthermore, the junction box 17's location on the backlight side 103 also prevents users from seeing it, thereby reducing visual imperfections of the photovoltaic module 10 and improving its aesthetics.

[0077] In some embodiments, the photovoltaic element 10 further includes an electrical connector 18 for electrically connecting two adjacent junction boxes 17. Specifically, when the photovoltaic element 10 includes at least two, the junction boxes 17 of at least two photovoltaic elements 10 can be connected together in series or parallel via electrical connection wires, thereby facilitating the connection of the photovoltaic module 100 ( Figure 1 (As shown) to control functions such as charging or discharging, thereby improving the stability and reliability of the photovoltaic module 100.

[0078] In the description of this specification, the references to terms such as "some embodiments," "in one example," "exemplarily," etc., indicate that a specific feature, structure, material, or characteristic described in connection with the described embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0079] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A photovoltaic device, characterized by, The photovoltaic element has a light-receiving side and a back-lighting side facing away from each other, and includes: The first cover plate is located on the light-receiving side; A second cover plate is located on the backlight side, and the second cover plate is stacked on top of the first cover plate; and A battery layer for converting light energy into electrical energy is disposed between a first cover plate and a second cover plate. The battery layer includes a first side and a second side facing away from each other. The first side of the battery layer is opposite to the first cover plate and has a color layer. The color layer is a textured pattern, and the color of the textured pattern is the same as the color of the battery layer. Alternatively, the color layer contains a colored material, and the color of the colored material is the same as the color of the battery layer.

2. The photovoltaic according to claim 1, wherein, The color layer is a textured pattern, which is formed on the side of the first cover plate facing the backlight by at least one of the following processes: screen printing, printing, roller brushing, hot pressing, and coating.

3. The photovoltaic according to claim 1, wherein, The color layer is a texture pattern, and the texture pattern is a striped texture; The width of the striped texture is greater than or equal to 0.10 mm and less than or equal to 0.50 mm; and / or, The striped texture includes at least two, and the spacing between two adjacent striped textures is greater than or equal to 0.10 mm and less than or equal to 0.20 mm.

4. The photovoltaic of claim 1, wherein, The photovoltaic component further includes a first adhesive film and a second adhesive film, wherein the first adhesive film is connected between the first cover plate and the battery layer, and the second adhesive film is connected between the second cover plate and the battery layer.

5. The photovoltaic according to claim 4, wherein, The color layer contains colored materials; The first cover plate is the color layer; or, The first adhesive film is the color layer.

6. The photovoltaic device according to claim 4, characterized in that, The color layer contains colored materials; The color layer is disposed between the first cover plate and the first adhesive film; or, The color layer is located on the side of the first cover plate opposite to the first adhesive film.

7. The photovoltaic device according to claim 6, characterized in that, The cross-sectional dimension of the first cover plate is equal to the sum of the cross-sectional dimensions of the color layer and the battery layer.

8. The photovoltaic device according to claim 1, characterized in that, The photovoltaic device also includes: A junction box is located on the backlight side and is electrically connected to the battery layer.

9. A photovoltaic module, characterized in that, include: The photovoltaic device according to any one of claims 1-8.

10. A photovoltaic system, characterized in that, include: The photovoltaic module according to claim 9.

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