Photovoltaic module, photovoltaic device and photovoltaic system

Abstract

The utility model discloses a photovoltaic module, a photovoltaic device and a photovoltaic system. The photovoltaic module comprises a photovoltaic piece, a protective layer and a barrier layer, wherein the photovoltaic piece comprises a light receiving surface and a backlight surface which are opposite to each other. The protective layer is arranged on the backlight surface and is configured to be capable of being connected with an external carrier. The blocking layer is arranged on the protective layer and at least used for preventing heat from being transmitted to the protective layer. According to the photovoltaic module, the photovoltaic device and the photovoltaic system, the protection layer is arranged on the backlight surface and is configured to be connected with the external carrier, and the blocking layer is arranged on the protection layer and is used for preventing heat from being transmitted to the protection layer, so that the temperature rise of the protection layer can be reduced, and the service life of the protection layer is prolonged. And heat on the protective layer is prevented from being transferred to the photovoltaic piece to cause over-high temperature of the photovoltaic piece, so that the power generation efficiency of the photovoltaic piece can be improved, the possibility of overheating damage of the photovoltaic piece is reduced, and the service life of the photovoltaic piece is prolonged.

Description

Technical Field

[0001] This application relates to the field of photovoltaic technology, and more specifically, to a photovoltaic module, a photovoltaic device, and a 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. In related technologies, PV modules can be installed on rooftops or other structures to convert solar energy into electricity, achieving energy conservation and environmental protection. In these technologies, PV modules can be laid on the roof surface using a protective layer, which serves as a connector and provides waterproofing. However, when the temperature of the protective layer rises—for example, when it is exposed to external sunlight or absorbs heat from the roof surface—this heat can be transferred to the PV modules, potentially causing them to overheat and affecting their power generation efficiency. Utility Model Content

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

[0004] The photovoltaic module according to embodiments of this application includes a photovoltaic element, a protective layer, and a barrier layer. The photovoltaic element includes a light-receiving surface and a backlighting surface facing away from each other. The protective layer is disposed on the backlighting surface and configured to be connected to an external carrier. The barrier layer is disposed on the protective layer and is used to at least prevent heat transfer to the protective layer.

[0005] In some embodiments, the protective layer is made of a waterproof material; the waterproof material includes at least one of thermoplastic polyolefin, polyvinyl chloride, and polyurethane.

[0006] In some embodiments, the barrier layer includes a reflective layer disposed on the protective layer on the side facing the photovoltaic element, the reflective layer being used to reflect light to the photovoltaic element.

[0007] In some embodiments, the reflective layer is made of at least one of titanium dioxide, zinc oxide, barium sulfate, and polytetrafluoroethylene.

[0008] In some embodiments, the size of the protective layer is equal to the size of the reflective layer.

[0009] In some embodiments, the size of the protective layer is equal to the sum of the size of the reflective layer and the size of the photovoltaic element.

[0010] In some embodiments, the barrier layer includes a heat insulation layer disposed on the protective layer on the side opposite to the photovoltaic element, the heat insulation layer being used to block heat transfer from the external carrier to the protective layer.

[0011] In some embodiments, the photovoltaic module further includes a junction box disposed on the protective layer on the side opposite to the photovoltaic element and electrically connected to the photovoltaic element.

[0012] In some embodiments, the photovoltaic module further includes an electrical connector for electrically connecting two adjacent junction boxes.

[0013] The photovoltaic device according to the embodiments of this application includes the photovoltaic module described in any of the above embodiments, and the photovoltaic module includes a plurality of photovoltaic modules, which are connected to each other.

[0014] The photovoltaic system of this application includes a support device and a photovoltaic device as described in any of the above embodiments, wherein the photovoltaic device is disposed on the support device.

[0015] In the photovoltaic modules, photovoltaic devices, and photovoltaic systems of this application, a protective layer is disposed on the back surface and configured to be connected to an external carrier. A barrier layer is disposed on the protective layer and is used to prevent heat from being transferred to the protective layer. This reduces the temperature rise of the protective layer and prevents heat from the protective layer from being transferred to the photovoltaic element, causing the photovoltaic element to overheat. This improves the power generation efficiency of the photovoltaic element, reduces the possibility of overheating damage, and extends the service life of the photovoltaic element.

[0016] 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

[0017] 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:

[0018] Figure 1 This is a three-dimensional structural schematic diagram of a photovoltaic system according to certain embodiments of this application;

[0019] Figure 2 yes Figure 1 A schematic cross-sectional view of the photovoltaic module in the photovoltaic system shown.

[0020] Figure 3 This is a three-dimensional structural diagram of a photovoltaic module according to certain embodiments of this application.

[0021] Explanation of key component symbols:

[0022] 1000 photovoltaic system;

[0023] 100 photovoltaic installations; 300 supporting installations;

[0024] 10 photovoltaic modules; X is the first direction; Y is the second direction;

[0025] 11 Photovoltaic components, 111 Light-receiving surface, 113 Backlighting surface; 13 Protective layer; 15 Barrier layer, 151 Reflective layer, 153 Heat insulation layer; 17 Junction box; 19 Mounting components, 190 Heat dissipation space, 191 Loading part, 193 Bending part, 195 First zone, 197 Second zone. Detailed Implementation

[0026] 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.

[0027] 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 of 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.

[0028] 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.

[0029] 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. In related technologies, photovoltaic (PV) devices can be installed on rooftops or other structures to convert solar energy into electricity, achieving energy conservation and environmental protection. In these technologies, PV devices can be laid on the roof surface using a protective layer, which serves as a connector and provides waterproofing. However, when the temperature of the protective layer rises—for example, when it is exposed to external sunlight or absorbs heat from the roof surface—this heat can be transferred to the PV devices, potentially causing them to overheat and affecting their power generation efficiency. Please refer to [link to relevant documentation]. Figure 1 To address the aforementioned issues, this application provides a photovoltaic module 10, a photovoltaic device 100, and a photovoltaic system 1000.

[0030] Please see Figure 1 The photovoltaic system 1000 of this application includes a photovoltaic device 100 and a supporting device 300, with the photovoltaic device 100 disposed on the supporting device 300. It should be noted that, in some embodiments, the photovoltaic system 1000 may include, but is not limited to, photovoltaic houses, photovoltaic carports, ground-mounted power stations, and floating photovoltaic systems.

[0031] Understandably, the support device 300 is a structure within the photovoltaic system 1000 used to fix, support, and adjust the photovoltaic device 100, ensuring that the photovoltaic device 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 device 100 is a collection of components within the photovoltaic system 1000 used to convert solar energy into electrical energy. Specifically, the photovoltaic device 100 can convert solar energy into electrical energy, achieving sustainable energy utilization. The photovoltaic device 100 does not produce greenhouse gases such as carbon dioxide or pollutants during power generation, resulting in a low environmental impact. The photovoltaic device 100 helps reduce dependence on traditional energy sources, mitigating air pollution and climate change issues. The photovoltaic device 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 device 100 can be combined and expanded as needed, suitable for power generation systems of various sizes and requirements.

[0032] For example, the support device 300 may include structural components such as columns, beams, and purlins to provide a stable support platform for the photovoltaic device 100, enabling the photovoltaic device 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 device 300 may be a purlin installed on the roof, and the photovoltaic device 100 can be installed on the roof through the support device 300 to jointly form a photovoltaic roof.

[0033] In some embodiments, the photovoltaic device 100 can be detachably installed on the support device 300, which facilitates the removal of the photovoltaic device 100 from the support device 300 when maintenance or replacement is required. The detachable connection methods include, but are not limited to, bolt connections and snap-fit ​​connections. In other embodiments, the photovoltaic device 100 can be non-detachably installed on the support device 300, which improves the connection strength between the photovoltaic device 100 and the support device 300, enhances the photovoltaic system 1000's ability to withstand external environmental factors, and ensures the stability and reliability of the photovoltaic system 1000's operation. The non-detachable connection methods include, but are not limited to, bonding or welding.

[0034] Furthermore, in some embodiments, the photovoltaic system 1000 also includes an energy storage device electrically connected to the photovoltaic device 100. The energy storage device can store the electrical energy generated by the photovoltaic device 100 and can power loads such as household appliances and portable devices. Of course, the photovoltaic device 100 can also directly power loads such as household appliances and portable devices. The energy storage device and the photovoltaic device 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 device can be not only a lithium-ion battery, lead-acid battery, or other types of rechargeable batteries, but also a device capable of storing and releasing electrical energy, such as a supercapacitor.

[0035] Since the photovoltaic system 1000 in this embodiment includes the photovoltaic device 100, it is understood that the photovoltaic system 1000 includes at least the same beneficial effects as the photovoltaic device 100. Therefore, for the beneficial effects of the photovoltaic system 1000, please refer to the beneficial effects of the photovoltaic device 100 described below.

[0036] Please continue reading. Figure 1 The photovoltaic device 100 of the present application includes a photovoltaic module 10, and the photovoltaic module 10 includes a plurality of photovoltaic modules 10 connected to each other.

[0037] Specifically, in some embodiments, at least two photovoltaic modules 10 can be connected together in a specific direction by overlapping or splicing to form an integral module (i.e., photovoltaic device 100). The integral module is then installed on a roof or other carrier using a support device 300. This effectively improves installation efficiency while maximizing power generation. Furthermore, forming at least two photovoltaic modules 10 into an integral module before installing it on the roof using the support device 300 reduces high-altitude work on the roof and improves safety.

[0038] 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 device 100 more stable and improving the stability and reliability of the photovoltaic device 100 in operation.

[0039] It should be noted that in some embodiments, at least two photovoltaic modules 10 may have the same shape and size or different shapes. Users can select photovoltaic modules 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 modules 10 of different sizes.

[0040] Since the photovoltaic device 100 in this embodiment includes a photovoltaic module 10, it is understood that the photovoltaic device 100 includes at least the same beneficial effects as the photovoltaic module 10. Therefore, for the beneficial effects of the photovoltaic device 100, please refer to the beneficial effects of the photovoltaic module 10 described below.

[0041] Please see Figure 1 and Figure 2 The photovoltaic module 10 of this application includes a photovoltaic element 11, a protective layer 13, and a barrier layer 15. The photovoltaic element 11 includes a light-receiving surface 111 and a backlighting surface 113 facing away from each other. The protective layer 13 is disposed on the backlighting surface 113 and is configured to be connected to an external carrier. The barrier layer 15 is disposed on the protective layer 13 and is used to at least prevent heat transfer to the protective layer 13.

[0042] It is understood that the photovoltaic element 11 is a structural component in the photovoltaic module 10 used to convert light energy into electrical energy. The photovoltaic element 11 can be different types of solar energy conversion devices, such as monocrystalline silicon, polycrystalline silicon, or thin-film solar cells. Users can select photovoltaic elements 11 with different efficiencies and sizes based on their usage needs and environmental conditions. In some embodiments of this application, the photovoltaic element 11 can be a planar structure or a curved structure to adapt to different user needs, thereby achieving better utilization of solar energy and improving the power generation efficiency of the photovoltaic module 10.

[0043] Specifically, in some embodiments, the photovoltaic element 11 includes a light-receiving surface 111 and a backlighting surface 113 facing away from each other. The light-receiving surface 111 is the surface of the photovoltaic element 11 that directly faces the sun, receives sunlight, and completes photoelectric conversion. The backlighting surface 113 is the surface of the photovoltaic element 11 that faces away from the sun. The photovoltaic element 11 may have only the light-receiving surface 111 receiving sunlight and converting it into electrical energy to generate electricity; or, both the light-receiving surface 111 and the backlighting surface 113 of the photovoltaic element 11 may receive sunlight and convert it into electrical energy to generate electricity (e.g., the backlighting surface 113 may receive reflected light).

[0044] The protective layer 13 is a structural component in the photovoltaic module 10 used to mount devices such as the photovoltaic element 11. The protective layer 13 is configured to connect to an external carrier (e.g., the support device 300 described above), meaning the photovoltaic element 11 can be connected to the external carrier via the protective layer 13. In some embodiments of this application, the protective layer 13 is made of a waterproof material; the waterproof material includes at least one of thermoplastic polyolefin (TPO), polyvinyl chloride (PVC), and polyurethane. Therefore, when the protective layer 13 is disposed on the back surface 113 of the photovoltaic element 11, the protective layer 13 not only serves a connecting function but also a waterproof function. It should be noted that in some embodiments, in addition to the aforementioned waterproof material, the waterproof material may also include ethylene propylene diene monomer (EPDM) rubber, etc.

[0045] The shape of the protective layer 13 matches the shape of the photovoltaic element 11. For example, when the photovoltaic element 11 is a planar structure, the protective layer 13 is also a planar structure, and the shape of the protective layer 13 is the same as the shape of the photovoltaic element 11. This ensures a tight connection between the photovoltaic element 11 and the protective layer 13, reduces the risk of loosening or displacement, and ensures the normal operation of the photovoltaic module 10.

[0046] The barrier layer 15 is a structural component in the photovoltaic module 10 used to prevent heat transfer to the protective layer 13. The barrier layer 15 can prevent heat transfer to the protective layer 13 by at least one of the following methods: heat conduction, heat reflection, or heat absorption. For example, the barrier layer 15 can be made of a material with low thermal conductivity to reduce heat transfer; and / or, the barrier layer 15 can be made of a material with high reflectivity to reflect heat back to the environment; and / or, the barrier layer 15 can be made of a phase change material (PCM) to absorb and store heat, thereby preventing heat transfer to the protective layer 13.

[0047] In the photovoltaic module 10 of this application embodiment, a protective layer 13 is disposed on the back surface 113 and configured to be connected to an external carrier. A barrier layer 15 is disposed on the protective layer 13 and is used to prevent heat from being transferred to the protective layer 13. This reduces the temperature rise of the protective layer 13 and prevents the heat on the protective layer 13 from being transferred to the photovoltaic element 11, causing the photovoltaic element 11 to overheat. This improves the power generation efficiency of the photovoltaic element 11, reduces the possibility of overheating damage to the photovoltaic element 11, and extends the service life of the photovoltaic element 11.

[0048] The photovoltaic module 10 will be further explained below with reference to the attached diagram.

[0049] Please see Figure 1 and Figure 2 In some embodiments, the barrier layer 15 includes a reflective layer 151, which is disposed on the protective layer 13 on the side facing the photovoltaic element 11. The reflective layer 151 is used to reflect light to the photovoltaic element 11. It should be noted that in some embodiments, the reflective layer 151 can be disposed on the protective layer 13 on the side facing the photovoltaic element 11 by means of bonding, spraying or coating.

[0050] If sunlight directly shines on the protective layer 13, the protective layer 13 will heat up under the influence of sunlight. With prolonged exposure to sunlight, the temperature rise of the protective layer 13 will become excessive, causing the photovoltaic element 11 mounted on the protective layer 13 to overheat and affecting its photoelectric conversion efficiency. In some embodiments of this application, a reflective layer 151 is disposed on the protective layer 13 facing the photovoltaic element 11 and is used to reflect light to the photovoltaic element 11. This avoids the photovoltaic element 11 overheating due to excessive temperature rise of the protective layer 13, thus ensuring the photoelectric conversion efficiency of the photovoltaic element 11 while extending its service life. Furthermore, it reduces light waste, allowing more light to reach the photovoltaic element 11, thereby improving its power generation efficiency.

[0051] In some embodiments, the reflective layer 151 is made of at least one of titanium dioxide, zinc oxide, barium sulfate, and polytetrafluoroethylene. That is, the reflective layer 151 can be made of a reflective white material, thereby improving its reflective effect and ensuring that external light has difficulty reaching the protective layer 13, reducing the temperature rise of the protective layer 13. It should be noted that in some embodiments, the reflective layer 151 can also be made of other reflective colors. For example, the color of the reflective layer 151 can be approximately the same as the color of the photovoltaic element 11, thus ensuring the consistency of the photovoltaic module 10's appearance and improving its aesthetics.

[0052] In some embodiments, the size of the protective layer 13 is larger than the size of the photovoltaic element 11, thereby providing better waterproofing compared to when the size of the protective layer 13 is the same as the size of the photovoltaic element 11.

[0053] Furthermore, in some embodiments, the size of the protective layer 13 is equal to the size of the reflective layer 151. That is, the cross-sectional shape and size of the reflective layer 151 are the same as those of the protective layer 13. This makes it difficult for external light to reach the protective layer 13, reducing the temperature rise of the protective layer 13. At the same time, since the size of the protective layer 13 is larger than the size of the photovoltaic element 11, the size of the reflective layer 151 is also larger than the size of the photovoltaic element 11. Therefore, when external light shines on the reflective layer 151, the reflective layer 151 can reflect the light to the photovoltaic element 11, thereby improving the power generation efficiency of the photovoltaic element 11.

[0054] In other embodiments, the size of the protective layer 13 is equal to the sum of the size of the reflective layer 151 and the size of the photovoltaic element 11. That is, when the protective layer 13 is connected to the backlight surface 113 of the photovoltaic element 11, the reflective layer 151 is disposed on the side of the protective layer 13 opposite to the photovoltaic element 11, in an area not connected to the photovoltaic element 11. In this case, the reflective layer 151 can surround the photovoltaic element 11. This ensures that external light is difficult to reach the protective layer 13, reducing the temperature rise of the protective layer 13; on the other hand, it reduces the size of the reflective layer 151, which helps to reduce the production cost of the photovoltaic module 10.

[0055] Furthermore, the assembly steps of the photovoltaic element 11, the protective layer 13, and the barrier layer 15 may include: first, placing the barrier layer 15 on the protective layer 13 to form a whole; then, connecting the whole consisting of the protective layer 13 and the barrier layer 15 to the backlight surface 113 of the photovoltaic element 11, thereby completing the assembly of the photovoltaic element 11, the protective layer 13, and the barrier layer 15. Where the size of the protective layer 13 is equal to the sum of the size of the reflective layer 151 and the size of the photovoltaic element 11, and the reflective layer 151 surrounds the photovoltaic element 11, when the reflective layer 151 is placed on the protective layer 13, the reflective layer 151 can define an installation area, and the photovoltaic element 11 can be directly installed in this installation area. That is, when the size of the protective layer 13 is equal to the sum of the size of the reflective layer 151 and the size of the photovoltaic element 11, and the reflective layer 151 surrounds the photovoltaic element 11, the placement of the reflective layer 151 also facilitates the installation and positioning of the photovoltaic element 11, improving the assembly efficiency of the photovoltaic module 10.

[0056] Please combine Figure 2In some embodiments, the barrier layer 15 includes a heat insulation layer 153, which is disposed on the protective layer 13 on the side facing away from the photovoltaic element 11. The heat insulation layer 153 is used to block heat transfer from the external carrier to the protective layer 13. It should be noted that in some embodiments, the heat insulation layer 153 can be disposed on the protective layer 13 on the side facing away from the photovoltaic element 11 by means of bonding, spraying, or coating.

[0057] Since the protective layer 13 is configured to connect with an external carrier, heat from the external carrier is easily transferred to the protective layer 13, causing it to heat up. This can easily lead to overheating of the photovoltaic element 11 mounted on the protective layer 13, affecting its photoelectric conversion efficiency. In some embodiments of this application, a heat insulation layer 153 is disposed on the protective layer 13 on the side facing away from the photovoltaic element 11. The heat insulation layer 153 is used to block heat from the external carrier from being transferred to the protective layer 13. That is, the heat insulation layer 153 can reduce or even prevent heat from the external carrier from being transferred to the protective layer 13, preventing the photovoltaic element 11 from overheating due to excessive temperature rise in the protective layer 13. This ensures the photoelectric conversion efficiency of the photovoltaic element 11 while extending its service life.

[0058] In some embodiments, the insulation layer 153 may be made of at least one of the following insulation materials: ceramic fiber (such as aluminosilicate fiber), foam ceramic, aerogel (such as silica aerogel), rock wool, etc.

[0059] Please see Figure 1 and Figure 2 In some embodiments, the photovoltaic module 10 further includes a junction box 17, which is disposed on the protective layer 13 on the side opposite to the photovoltaic element 11 and is electrically connected to the photovoltaic element 11.

[0060] Understandably, the junction box 17 is a component in the photovoltaic module 10 used for electrical connection. The junction box 17 can be electrically connected to the photovoltaic element 11 and the energy storage device to form a complete electrical circuit, enabling the electrical energy generated by the photovoltaic element 11 to be transmitted to the energy storage device. The junction box 17 is located on the protective layer 13 on the side facing away from the photovoltaic element 11. Therefore, the protective layer 13 protects the junction box 17, reducing the possibility of external 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 10 in harsh environments. Furthermore, the fact that the junction box 17 is located on the protective layer 13 on the side facing away from the photovoltaic element 11 also prevents users from directly seeing the junction box 17, thereby reducing visual imperfections of the photovoltaic module 10 and improving its aesthetics.

[0061] In some embodiments, the photovoltaic module 10 further includes an electrical connector for electrically connecting two adjacent junction boxes 17. Specifically, when there are at least two photovoltaic modules 10, the junction boxes 17 of the at least two photovoltaic modules 10 can be connected together in series or parallel via electrical connection lines, thereby facilitating the control of functions such as charging or discharging of the photovoltaic device 100 and improving the stability and reliability of the operation of the photovoltaic device 100.

[0062] Please combine Figure 3 In some embodiments, the photovoltaic module 10 further includes a mounting member 19, which is configured to connect to an external carrier and includes a loading portion 191 and a bending portion 193. The loading portion 191 is located on the side of the protective layer 13 away from the photovoltaic module 11, and the bending portion 193 bends relative to the loading portion 191 in a direction away from the protective layer 13, and together with the loading portion 191, forms a heat dissipation space 190.

[0063] It is understood that the mounting component 19 is a structure in the photovoltaic module 10 used for lifting, installing, and supporting structures such as the photovoltaic element 11, the protective layer 13, and the barrier layer 15. In some embodiments of this application, the mounting component 19 includes a loading portion 191 and a bending portion 193. The loading portion 191 is used to load the photovoltaic element 11, the protective layer 13, and the barrier layer 15 (hereinafter referred to as the combined structure). The bending portion 193 is configured to connect with an external carrier (such as the support device 300 mentioned above). That is, the combined structure can be connected to the support device 300 through the bending portion 193 of the mounting component 19. It should be noted that in some embodiments, the loading portion 191 and the bending portion 193 can be an integral structure or a separate structure, and this application does not impose any limitations.

[0064] The shape of the loading part 191 matches the shape of the combined structure. For example, when the combined structure is a planar structure, the loading part 191 is also a planar structure. This allows the combined structure and the loading part 191 to be tightly connected, reducing the risk of loosening or displacement and ensuring the normal operation of the photovoltaic module 10. On the other hand, it facilitates the positioning and installation of the combined structure on the mounting part 19, improving assembly efficiency.

[0065] In some embodiments, the mounting component 19 may be made of metallic and / or non-metallic materials. Metallic materials include, but are not limited to, aluminum, iron, steel, or aluminum alloys, while non-metallic materials include, but are not limited to, plastics. For example, the mounting component 19 may be made of metallic materials, such as aluminum alloys. This can improve the structural strength of the mounting component 19, enhance its ability to resist external environments, and ensure the stability and reliability of the photovoltaic module 10.

[0066] In some embodiments, the loading portion 191 and the bending portion 193 are made of the same material. For example, if the loading portion 191 is made of aluminum alloy, the bending portion 193 is also made of aluminum alloy, which facilitates the production and processing of the mounting part 19.

[0067] In other embodiments, the mounting portion 191 and the bending portion 193 are made of different materials. For example, the mounting portion 191 may be made of a material with good thermal insulation properties, such as glass wool or aerogel, thereby reducing the heat conducted from the support device 300 or other carrier to the photovoltaic element 11 through the mounting portion 191, preventing the photovoltaic element 11 from overheating and ensuring the power generation efficiency of the photovoltaic element 11; while the bending portion 193 may be made of a metal with high structural strength, such as stainless steel, thereby improving the deformation resistance of the mounting portion 19 and ensuring the stability and reliability of the photovoltaic module 10.

[0068] In some embodiments of this application, the bending portion 193 may include two bending portions 193, which are respectively disposed at opposite ends of the loading portion 191 in the first direction X. Both bending portions 193 are bent away from the protective layer 13 relative to the loading portion 191. Therefore, the loading portion 191 and the two bending portions 193 can jointly form a heat dissipation space 190. Thus, compared to the combined structure being directly laid flat on the external carrier, when the combined structure is disposed on the external carrier through the mounting member 19, the heat dissipation space 190 can allow air circulation. This can, on the one hand, achieve heat dissipation of the combined structure, prevent the photovoltaic element 11 from overheating, improve the power generation efficiency of the photovoltaic element 11, and extend the service life of the photovoltaic element 11; on the other hand, it can isolate the protective layer 13 from the external carrier, reduce heat transfer between the protective layer 13 and the external carrier, prevent the temperature rise of the protective layer 13 from being too high, which would cause the temperature of the photovoltaic element 11 to be too high, thereby improving the power generation efficiency of the photovoltaic element 11 and extending the service life of the photovoltaic element 11.

[0069] It is understood that in some embodiments, the junction box 17 is disposed within the heat dissipation space 190. The heat dissipation space 190 provides protection for the junction box 17, reducing 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 10 in harsh environments. Furthermore, the junction box 17 being disposed within the heat dissipation space 190 also facilitates heat dissipation, reducing the possibility of overheating and damage, and ensuring the stability and reliability of the photovoltaic module 10.

[0070] In some embodiments, the mounting component 19 includes a first region 195 and a second region 197, the first region 195 being used to load the assembly structure, and the second region 197 being connected to one end of the first region 195 in a second direction Y, the second direction Y being perpendicular to the first direction X.

[0071] Specifically, in some embodiments, in the direction from the photovoltaic element 11 to the protective layer 13 (a direction perpendicular to both the first direction X and the second direction Y), the mounting member 19 includes a first side and a second side facing away from each other, and the combined structure is disposed on the first side of the mounting member 19. In the second direction Y, one mounting member 19 can overlap with the second region 197 of an adjacent mounting member 19. In this case, the second side of one mounting member 19 is connected to the area corresponding to the second region 197 on the first side of the adjacent mounting member 19. That is, the second region 197 can be used to connect two adjacent photovoltaic modules 10 in the second direction Y, thereby allowing at least two photovoltaic modules 10 to overlap sequentially along the second direction Y to form an integral module. It should be noted that in some embodiments, the size of the loading portion 191 in the second region 197 can be the same as the size of the protective layer 13.

[0072] Understandably, connecting two adjacent photovoltaic modules 10 by overlapping facilitates their installation and disassembly, enabling faster and more efficient installation and maintenance, thus improving work efficiency. Furthermore, adjacent photovoltaic modules 10 can be connected using fasteners (such as bolts), thereby increasing the connection strength between the photovoltaic modules 10 and enhancing the stability of the photovoltaic device 100.

[0073] 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.

[0074] 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 module, characterized in that, include: A photovoltaic device, the photovoltaic device comprising a light-receiving surface and a backlighting surface facing away from each other; A protective layer, wherein the protective layer is disposed on the backlight surface and configured to connect with an external carrier; and A barrier layer is disposed on the protective layer, the barrier layer being at least used to prevent heat transfer to the protective layer.

2. The photovoltaic module according to claim 1, characterized in that, The protective layer is made of a waterproof material; the waterproof material includes at least one of thermoplastic polyolefin, polyvinyl chloride, and polyurethane.

3. The photovoltaic module according to claim 1, characterized in that, The barrier layer includes: A reflective layer is disposed on the protective layer on the side facing the photovoltaic element, and the reflective layer is used to reflect light to the photovoltaic element.

4. The photovoltaic module according to claim 3, characterized in that, The reflective layer is made of at least one of titanium dioxide, zinc oxide, barium sulfate, and polytetrafluoroethylene.

5. The photovoltaic module according to claim 3, characterized in that, The size of the protective layer is equal to the size of the reflective layer; or, The size of the protective layer is equal to the sum of the size of the reflective layer and the size of the photovoltaic element.

6. The photovoltaic module according to claim 1, characterized in that, The barrier layer includes: A heat insulation layer is disposed on the protective layer on the side away from the photovoltaic element, and the heat insulation layer is used to block the heat on the external carrier from being transferred to the protective layer.

7. The photovoltaic module according to claim 1, characterized in that, The photovoltaic module also includes: A junction box is disposed on the protective layer on the side opposite to the photovoltaic element and is electrically connected to the photovoltaic element.

8. The photovoltaic module according to claim 7, characterized in that, The photovoltaic module also includes: An electrical connector for electrically connecting two adjacent junction boxes.

9. A photovoltaic device, characterized in that, include: The photovoltaic module according to any one of claims 1-8, wherein the photovoltaic module comprises a plurality of photovoltaic modules, and the plurality of photovoltaic modules are connected to each other.

10. A photovoltaic system, characterized in that, include: Support device; and The photovoltaic device of claim 9, wherein the photovoltaic device is disposed on the supporting device.

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