Curved photovoltaic module

Abstract

A curved photovoltaic module (100) is disclosed. The curved photovoltaic module (100) comprises a first plate (10), a packaging member (30), and a rigid second plate (50). The first plate (10) comprises a flexible base material (12) and a power generation substrate (14), and the power generation substrate (14) is arranged on one side surface of the base material (12) in the thickness direction. The packaging member (30) is connected to the second plate (50) and the side surface of the base material (12) provided with the power generation substrate (14), and the packaging member (30) packages the power generation substrate (14).

Description

Curved photovoltaic components

[0001] Priority information

[0002] This application claims priority and benefits of patent application No. 202410193026.6 filed with the State Intellectual Property Office of China on February 20, 2024, and the entire text of which is incorporated herein by reference. Technical Field

[0003] The present application relates to the field of photovoltaic technology, and in particular to a curved photovoltaic component. Background Art

[0004] In the related art, curved solar panels are formed by welding multiple busbars on the front and back sides of the cell to form at least a 5-layer structure, which makes the curved solar panel structure more complex, the assembly process more complicated, the risk of desoldering is higher, resulting in easy delamination and high cost. Summary of the Invention

[0005] The embodiments of the present application provide a curved photovoltaic device to solve at least one of the above-mentioned technical problems.

[0006] The embodiment of the present application provides a curved photovoltaic device. The curved photovoltaic device includes:

[0007] a first plate comprising a flexible substrate and a power generation substrate, wherein the power generation substrate is provided on a side surface of the substrate along a thickness direction;

[0008] Package;

[0009] A rigid second plate, the packaging member connects the second plate and the side of the substrate provided with the power generation substrate, and the packaging member packages the power generation substrate.

[0010] The curved photovoltaic component uses a packaging component to package and connect the first plate and the second plate to form a three-layer curved photovoltaic component that can achieve photoelectric conversion. It has a simple structure, low cost and is easy to process.

[0011] In certain embodiments, the package is provided with a receiving cavity, and the power generation substrate is located in the receiving cavity.

[0012] In certain embodiments, the packaging member is a packaging film.

[0013] In certain embodiments, the material of the encapsulation film includes at least one of EVA material, TPO material, PVB material and POE material.

[0014] In certain embodiments, the second plate is a rigid plate having a curved surface, and the base material is a flexible member that can be bent to form the same curved surface as the second plate.

[0015] In certain embodiments, the rigid plate is made of glass, aluminum alloy, or composite glass fiber material.

[0016] In certain embodiments, the power generation substrate is formed on the substrate by coating.

[0017] In certain embodiments, the substrate is made of at least one of glass, PET, and composite glass fiber.

[0018] In certain embodiments, the thickness of the substrate is selected from the range [0.1 mm, 1.6 mm].

[0019] In certain embodiments, the power generation substrate includes at least one of a perovskite thin film cell, a quantum dot photovoltaic cell, a dye-sensitized solar cell, and an organic solar cell.

[0020] In certain embodiments, the distance between the edge of the power generation substrate and the edge of the base material is greater than or equal to 8 mm.

[0021] In some embodiments, the curved photovoltaic element includes two conductive elements, which are spaced apart from each other, and each conductive element is electrically connected to the power generation substrate.

[0022] In certain embodiments, the conductive member is a conductive tape.

[0023] In some embodiments, the curved photovoltaic element includes an insulating element, and the conductive element includes a first portion and a second portion connected to each other, the first portion extends along a first direction, the second portion of one of the conductive elements extends along a second direction, and the second portion of another of the conductive elements extends along a third direction, the first direction is perpendicular to the second and third directions, and the second direction is opposite to the third direction;

[0024] The insulating member is located between the second portion and the power generation substrate.

[0025] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0027] FIG1 is an exploded schematic diagram of a curved photovoltaic device according to an embodiment of the present application;

[0028] FIG2 is a bottom view of the first plate according to an embodiment of the present application;

[0029] FIG3 is a schematic diagram of a three-dimensional assembly of a curved photovoltaic device according to an embodiment of the present application;

[0030] 4 and 5 are partial cross-sectional views of a curved photovoltaic device according to an embodiment of the present application;

[0031] FIG6 is a structural diagram of a photovoltaic panel in related art.

[0032] Description of the reference numerals of the main components: curved photovoltaic device 100 , first plate 10 , packaging component 30 , second plate 50 , conductive component 70 , insulating component 90 , substrate 12 , power generation base 14 , accommodating cavity 32 , first portion 72 , second portion 74 , second portion 76 . DETAILED DESCRIPTION

[0033] The following describes in detail embodiments of the present application, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0034] The disclosure below provides many different embodiments or examples for realizing different structures of the embodiments of the present application. In order to simplify the disclosure of the embodiments of the present application, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present application. The embodiments of the present application may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplicity and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the embodiments of the present application provide examples of various specific processes and materials, but those of ordinary skill in the art will appreciate the application of other processes and / or the use of other materials.

[0035] Referring to Figures 1 to 3 , embodiments of the present application provide a curved photovoltaic device 100. Curved photovoltaic device 100 includes a first panel 10, an encapsulation member 30, and a rigid second panel 50. First panel 10 includes a flexible substrate 12 and a power generation substrate 14, which is disposed on a side of substrate 12 along its thickness. Encapsulation member 30 connects second panel 50 to the side of substrate 12 where power generation substrate 14 is disposed, encapsulating power generation substrate 14.

[0036] The curved photovoltaic device 100 uses a packaging component 30 to package and connect the first plate 10 and the second plate 50 to form a three-layer curved photovoltaic device 100 capable of achieving photoelectric conversion. The device has a simple structure, low cost, and is easy to process.

[0037] Specifically, in one embodiment, the first plate 10 can be a front plate, and the second plate 50 can be a back plate, or the first plate 10 can also be a back plate, and the second plate 50 can also be a front plate, so that the first plate 10 and the second plate 50 are encapsulated and bonded through the packaging member 30 to form a three-layer curved photovoltaic component 100, thereby ensuring the photoelectric conversion and utilization efficiency.

[0038] In one embodiment, the first plate 10 is a flexible plate with good flexibility and can be bent into a preset shape. For example, the preset shape can be the same shape as the second plate 50 to ensure that the first plate 10 and the second plate 50 match and fit together, which is practical.

[0039] In one embodiment, the second plate 50 is a rigid plate that can withstand a certain gravity, for example, the gravity can be 10N, etc., that is, the second plate 50 will not undergo obvious deformation under the action of 10N of gravity, so as to ensure that the first plate 10 and the second plate 50 are tightly attached and maintain a certain rigidity, which is conducive to the stable placement and safe operation of the curved photovoltaic component 100.

[0040] In addition, in one embodiment, the second plate 50 is a continuous curved surface with a certain curvature, that is, any curved segment of the second plate 50 is an arc, so that the formed curved photovoltaic component 100 can be effectively installed on building materials, such as tiles, etc., to ensure that the curved photovoltaic component 100 can be stably placed and efficiently obtain sunlight, and has good practicality.

[0041] In one embodiment, the package 30 has a double-sided connection function, similar to the two-sided connection function of double-sided tape, and can be used to connect the opposite sides of the first board 10 and the second board 50, thereby ensuring the connection stability of the curved photovoltaic device 100.

[0042] FIG1 shows a photovoltaic component to be laminated. After lamination, a curved photovoltaic component as shown in FIG3 is formed.

[0043] In one embodiment, the first plate 10 includes a flexible substrate 12 and a power generation substrate 14 , so that the first plate 10 formed by connecting the substrate 12 and the power generation substrate 14 has a certain degree of flexibility, is easy to bend, and has good conformability.

[0044] In one embodiment, as shown in Figures 1 to 3, the power generation substrate 14 is arranged on one side of the substrate 12 along the thickness direction. From the perspective of the setting position of the first plate 10 on the curved photovoltaic device 100, the substrate 12 is located on the relatively outside of the power generation substrate 14, so as to ensure that the power generation substrate 14 is protected from interference or even damage from the external environment, thereby ensuring the safe operation of the power generation substrate 14.

[0045] The power generation substrate 14 may be disposed on one side of the substrate 12 along the thickness direction by coating. For example, the power generation substrate 14 may be a conductive coating, or may be connected by other means, which are not specifically limited herein.

[0046] That is, the substrate 12 can be made of a material with stable properties such as high temperature resistance, corrosion resistance, and oxidation resistance, such as a thin flexible glass material, as a protective part of the power generation base 14, thereby ensuring that the curved photovoltaic component 100 can work for a long time under strong outdoor light conditions with good stability and practicality.

[0047] In one embodiment, the area of ​​the power generation substrate 14 is smaller than that of the substrate 12 to reserve a certain packaging connection space, thereby ensuring that the power generation substrate 14 is safely sealed after assembly, thereby further improving the safety of the power generation substrate 14, and further ensuring that the power generation substrate 14 has good sealing after packaging.

[0048] In one embodiment, the package 30 connects the second plate 50 and the side of the substrate 12 provided with the power generation substrate 14. On the one hand, the package 30 encapsulates the power generation substrate 14. On the other hand, the package 30 is stably connected to the substrate 12 and the second plate 50 respectively, thereby ensuring stable assembly of the curved photovoltaic component 100.

[0049] In one embodiment, the curved photovoltaic device 100 is assembled as follows: first, a power generation substrate 14 is coated on a substrate 12 to form a first panel 10 , and then the packaging member 30 is packaged and connected to the first panel 10 and the second panel 50 in a vacuum environment to form the curved photovoltaic device 100 .

[0050] For example, in one example, a vacuum environment can be formed by vacuuming through vacuum equipment, and the first plate 10, the package 30 and the second plate 50 are placed in sequence, and the first plate 10 is pushed by a laminator. For example, the laminator can pass through a flat silicone layer to press the first plate 10 flatly and safely toward the package 30 and the second plate 50. The working principle is similar to that of a clothing packaging bag used for vacuuming. By vacuuming air, the clothing packaging bag shrinks and presses the clothes tightly, thereby forming a curved photovoltaic device 100. No specific restrictions are made here.

[0051] In another example, a mold having the same shape as the second plate 50 can be formed by opening a mold to stably and safely fix the second plate 50, and then the first plate 10 and the package 30 are pressed and connected toward the second plate 50, without specific limitation.

[0052] It is worth noting that, as shown in Figures 1 and 3, in one example, preferably, the side of the first panel 10 facing away from the package 30 can serve as the light-receiving surface of the curved photovoltaic device 100, ensuring that the power generation substrate 14 quickly receives sunlight, thereby ensuring photoelectric conversion efficiency and improving the user experience. The first panel 10 can be made of a light-transmitting material to ensure that the power generation substrate 14 receives sufficient light.

[0053] As shown in Figures 1 and 3, in another example, preferably, the side of the second panel 50 away from the package 30 can also serve as the light-receiving surface of the curved photovoltaic device 100, allowing sunlight to pass through the second panel 50 and the package 30 and illuminate the power generation substrate 14. This allows the power generation substrate 14 to receive sunlight to ensure photoelectric conversion efficiency, thereby improving the user experience. The second panel 50 and the package 30 are both made of light-transmitting materials to ensure that the power generation substrate 14 receives sufficient light.

[0054] Referring to FIG. 4 and FIG. 5 , in some embodiments, the package 30 defines a receiving cavity 32 , and the power generation substrate 14 is located in the receiving cavity 32 .

[0055] In this way, the power generation substrate 14 is ensured to be sealed and packaged, thereby ensuring the safe operation of the power generation substrate 14.

[0056] Specifically, in one embodiment, the package 30 is provided with a receiving cavity 32 for receiving the power generation substrate 14 to ensure that the power generation substrate 14 is sealed and packaged, thereby ensuring the safe operation of the power generation substrate 14 and avoiding potential safety hazards such as leakage or fire.

[0057] In one embodiment, referring to FIG. 4 , the package 30 may be in the shape of a frame, so that an intermediate cavity is formed around it to serve as a receiving cavity 32 for accommodating the power generation substrate 14 , while connecting the first plate 10 and the second plate 50 , thereby improving the sealing of the power generation substrate 14 .

[0058] In another embodiment, referring to FIG. 5 , the package 30 may also be provided with a blind hole or a groove to form an empty cavity, which serves as a receiving cavity 32 to accommodate the power generation substrate 14 and connect the first plate 10 and the second plate 50 , thereby improving the sealing of the power generation substrate 14 .

[0059] In another embodiment, the package 30 can also be made of a plastic material. After the first plate 10, the package 30 and the second plate 50 are pressed and connected, the power generation substrate 14 is accommodated in the accommodating cavity 32 of the package 30 that is deformed, thereby improving the sealing of the power generation substrate 14.

[0060] In other embodiments, the packaging member 30 may also be in other structural shapes to form a receiving cavity 32 to accommodate the power generation substrate 14 , which is not specifically limited here.

[0061] Referring to Figure 1 , when manufacturing a curved photovoltaic device 100, a power generation substrate 14 is first formed on the surface of a planar substrate 12 to form a planar first panel 10. The planar first panel 10, the planar encapsulation member 30, and the curved second panel 50 are then stacked and placed in a hot press. The hot press heat-presses and shapes the first panel 10, the encapsulation member 30, and the second panel 50, forming a curved surface that matches the second panel 50, as shown in Figure 3 .

[0062] In some embodiments, the packaging member 30 is a packaging film.

[0063] In this way, the packaging cost is reduced while ensuring that the first board 10 and the second board 50 are tightly connected.

[0064] Specifically, in one embodiment, the packaging component 30 is a packaging film, which can be used to bond the first panel 10 and the second panel 50 together, thereby ensuring the overall stability and reliability of the curved photovoltaic device 100 .

[0065] In one embodiment, the encapsulation member 30 is an encapsulation film, which can seal the power generation substrate 14 in the curved photovoltaic device 100, thereby preventing water vapor or other substances from invading the interior of the curved photovoltaic device 100, reducing the impact of external factors on the internal photoelectric conversion circuit, and thus extending the service life of the curved photovoltaic device 100.

[0066] In one embodiment, the packaging component 30 is a packaging film with good light transmittance, which can ensure that the power generation substrate 14 can better obtain sunlight, and help improve the power generation efficiency of the curved photovoltaic device 100.

[0067] In one embodiment, the packaging component 30 is a packaging film, which can play a supporting role during the production, storage, installation or use of the curved photovoltaic device 100, and can also enhance the impact resistance, thereby ensuring the safe operation of the curved photovoltaic device 100.

[0068] In addition, the packaging member 30 is a packaging film, the raw materials of which are cheap and easy to obtain, the manufacturing cost is low, and the practicality is good.

[0069] In certain embodiments, the material of the encapsulation film includes at least one of EVA material, TPO material, PVB material, and POE material.

[0070] In this way, a packaging film with excellent packaging performance is formed, thereby ensuring the connection stability of the curved photovoltaic device 100.

[0071] Specifically, in one embodiment, the encapsulation film can be made of EVA material, TPO material, PVB material or POE material to ensure the encapsulation performance and light transmittance of the encapsulation component 30 , thereby ensuring the power generation efficiency of the curved photovoltaic component 100 .

[0072] In another embodiment, the encapsulation film can also be made of any two materials among EVA material, TPO material, PVB material and POE material, such as EVA material + TPO material, EVA material + PVB material, EVA material + POE material, TPO material + PVB material, TPO material + POE material or PVB material + POE material, so as to form a single-layer composite film with excellent properties of both materials by stacking and then melting, thereby ensuring the packaging performance and light transmittance of the package 30, and further ensuring the power generation efficiency of the curved photovoltaic device 100.

[0073] In another embodiment, the encapsulation film can also be made of any three materials among EVA material, TPO material, PVB material and POE material, such as EVA material + TPO material + PVB material, EVA material + TPO material + POE material or TPO material + PVB material + POE material, so as to form a single-layer composite film with excellent properties of the three materials by stacking and then melting, thereby ensuring the packaging performance and light transmittance of the package 30, and further ensuring the power generation efficiency of the curved photovoltaic device 100.

[0074] In addition, the encapsulation film can also be made of four materials, namely EVA material, TPO material, PVB material and POE material, by stacking and then melting to form a single-layer composite film with the excellent properties of the four materials, thereby ensuring the encapsulation performance and light transmittance of the encapsulation component 30, and further ensuring the power generation efficiency of the curved photovoltaic component 100.

[0075] In one embodiment, ethylene vinyl acetate (EVA) is a transparent thermoplastic foam material that is waterproof, has good cushioning properties, and is flexible, and can ensure the packaging performance and light transmittance of the packaging film, thereby ensuring the safe and efficient operation of the curved photovoltaic device 100.

[0076] In one embodiment, thermoplastic polyolefin (TPO) is an elastomeric material composed of rubber and polyolefin. It can exhibit high elasticity of rubber at room temperature and can be plasticized and molded at high temperature. It has good weather resistance, flame retardancy and buffering capacity, etc., and can ensure the packaging performance and light transmittance of the packaging film, thereby ensuring the safe and efficient operation of the curved photovoltaic device 100.

[0077] In one embodiment, polyvinyl butyral (PVB) has excellent softness and flexibility. The material itself contains many hydroxyl groups, which can ensure good buffering capacity, thereby ensuring the packaging performance and light transmittance of the packaging film, and further ensuring the safe and efficient operation of the curved photovoltaic device 100.

[0078] In one embodiment, polyolefin elastomer (POE) is a thermoplastic elastomer that combines the processability of plastic with the high elasticity and weather resistance of rubber. It has the characteristics of transparency and flexibility, and can ensure the packaging performance and light transmittance of the packaging film, thereby ensuring the safe and efficient operation of the curved photovoltaic device 100.

[0079] Referring to FIG. 1 and FIG. 3 , in some embodiments, the second plate 50 is a rigid plate having a curved surface, and the substrate 12 is a flexible member that can be bent to form the same curved surface as the second plate 50 .

[0080] In this way, it is ensured that the substrate 12 can be connected with the second plate 50 , thereby improving the sealing performance of the curved photovoltaic device 100 .

[0081] Specifically, in one embodiment, the second plate 50 is a rigid plate with a curved surface, so that the second plate 50 has a certain pressure-bearing capacity, which facilitates the lamination connection of the first plate 10 and the second plate 50 through the packaging component 30, thereby ensuring the tightness of the connection of the curved photovoltaic component 100.

[0082] In addition, the second plate 50 is a rigid plate with a curved surface, so that the assembled curved photovoltaic element 100 can be installed in a matching workplace, such as curved tiles, thereby ensuring the stability and safety of the curved photovoltaic element 100.

[0083] In one embodiment, the substrate 12 is a flexible member that can be bent to form the same curved surface as the second plate 50, so that the substrate 12 and the second plate 50 can be matched and pressed onto the second plate 50, and at the same time, the power generation base 14 is sealed in the curved photovoltaic component 100, thereby reducing the gap between the first plate 10 and the second plate 50, and then ensuring the sealing of the curved photovoltaic component 100, avoiding water vapor intrusion and causing leakage, and having good safety.

[0084] In certain embodiments, the rigid plate is made of glass, aluminum alloy, or glass fiber composite material.

[0085] In this way, a rigid plate with suitable mechanical strength is formed, thereby ensuring safe assembly and safe operation of the curved photovoltaic device 100 .

[0086] Specifically, in one embodiment, the rigid plate includes glass, aluminum alloy or composite glass fiber material. It can be understood that the rigid plate can be made of glass material, aluminum alloy material, or composite glass fiber material to ensure the formation of a curved rigid plate with appropriate mechanical strength, thereby ensuring that the first plate 10 is tightly pressed on the rigid second plate 50, and then ensuring the safe assembly and safe operation of the curved photovoltaic component 100. No specific restrictions are made here.

[0087] In other embodiments, the rigid plate may also be formed into a curved rigid plate through a composite process, that is, the rigid second plate 50 , which is not specifically limited here.

[0088] It can be understood that in one embodiment, the glass has good light transmittance, high mechanical strength and tolerance, and can maintain stable operation under strong light conditions for a long time. For example, the glass can be organic glass PMMA, etc., which has better mechanical properties than conventional glass. Therefore, it can be preferably used as a material for forming a rigid board, thereby ensuring the mechanical strength and safe use of the curved photovoltaic component 100.

[0089] In another embodiment, aluminum alloy has the advantages of light weight and high hardness, and can be used as a material for forming a rigid plate to improve the supporting and protective function of the rigid plate and reduce the weight of the curved photovoltaic component 100, thereby ensuring the mechanical strength and safe use of the curved photovoltaic component 100.

[0090] In another embodiment, the composite glass fiber material can be formed by high-temperature melting of minerals such as quartz sand. It has the advantages of good insulation, strong heat resistance, good corrosion resistance and high mechanical strength. It can be used as a forming material for rigid boards, thereby ensuring the mechanical strength and safe use of the curved photovoltaic component 100.

[0091] Referring to FIG. 1 , in some embodiments, the power generation substrate 14 is formed on the substrate 12 by coating.

[0092] In this way, the first plate 10 capable of performing photoelectric conversion is formed, and the process is simple.

[0093] Specifically, in one embodiment, the power generation substrate 14 can be a conductive coating that can be formed on the substrate 12 by coating, so that the power generation substrate 14 can convert solar energy into electrical energy under the protection of the substrate 12 for user use, and the operation is simple.

[0094] It can be understood that the power generation substrate 14 is formed on the substrate 12 by coating, so that the power generation substrate 14 can realize photoelectric conversion on the substrate 12 with good flatness, insulation and high temperature resistance, thereby ensuring the photoelectric conversion efficiency and safe power supply of the curved photovoltaic device 100.

[0095] In certain embodiments, the material of the substrate 12 includes at least one of glass, PET material, and composite glass fiber material.

[0096] In this way, a flexible substrate 12 with stable performance is formed, thereby ensuring that the first plate 10 and the second plate 50 are matched and connected to form the curved photovoltaic device 100 .

[0097] Specifically, in one embodiment, the substrate 12 includes at least one of glass, PET material and composite glass fiber material. It can be understood that the substrate 12 can be made of glass, PET material or composite glass fiber material, or any two of glass, PET material and composite glass fiber material. Glass, PET material and composite glass fiber material can also be used to form a new composite material to ensure the formation of a flexible substrate 12 with stable performance, thereby ensuring that the first plate 10 matches the connection with the second plate 50, and further ensuring the stable operation of the curved photovoltaic component 100. No specific restrictions are made here.

[0098] In one embodiment, glass has good light transmittance and durability and can maintain stable operation under strong light conditions for a long time, and therefore can be used as a preferred material for the substrate 12 .

[0099] In addition, glass usually has a certain hardness and can be used as a material for forming a rigid plate. However, when the thickness of the glass is small enough, the glass can achieve continuous bending and rebounding. That is, when the thickness of the glass is small enough, flexible glass can be manufactured, thereby ensuring that the substrate 12 has a certain flexibility to match and press-fit with the second plate 50.

[0100] For example, in one example, the flexible substrate 12 can be manufactured by using glass with a thickness of 0.1 mm. Other thicknesses are also possible and are not specifically limited here.

[0101] It can be understood that the thinner the substrate 12 is, the higher the bendable curvature of the substrate 12 is, so that the substrate 12 is more likely to fit tightly with the second plate 50, thereby avoiding gaps that may cause safety hazards.

[0102] Similarly, the composite glass fiber material can also apply the principle of flexible glass to form a flexible substrate 12, which will not be described in detail here.

[0103] In one embodiment, polyethylene terephthalate (PET) is a thermoplastic polyester with good folding resistance, which can be used to manufacture the flexible substrate 12, thereby ensuring that the first plate 10 and the second plate 50 are matched and pressed together, thereby ensuring the sealing of the curved photovoltaic device 100.

[0104] Referring to FIG. 1 , in certain embodiments, the thickness H of the substrate 12 is selected from the range [0.1 mm, 1.6 mm].

[0105] In this way, the substrate 12 has appropriate flexibility, thereby ensuring a good connection between the first plate 10 and the second plate 50 , and further ensuring a safe sealing of the curved photovoltaic device 100 .

[0106] Specifically, in one embodiment, the substrate 12 should be of a suitable thickness H to ensure the flexibility of the substrate 12 , thereby ensuring close contact between the first plate 10 and the second plate 50 and improving the safety of the curved photovoltaic device 100 .

[0107] In one embodiment, the thickness H of the substrate 12 is selected from the range of [0.1 mm, 1.6 mm] to form a substrate 12 with a suitable bendable curvature, so that the substrate 12 can fit closely with the second plate 50 and can also protect the power generation base 14.

[0108] For example, in some examples, the thickness H may be 0.1 mm, 0.3 mm, 0.7 mm, 0.8 mm, 1.2 mm, 1.5 mm, 1.6 mm, or other values ​​between 0.1 mm and 1.6 mm.

[0109] When the thickness H of the substrate 12 is greater than 1.6 mm, the thickness H of the substrate 12 is too large, resulting in poor flexibility of the substrate 12 and difficulty in bending, which makes it impossible to ensure that the first plate 10 and the second plate 50 are closely fitted.

[0110] When the thickness H of the substrate 12 is less than 0.1 mm, the thickness H of the substrate 12 is too small, which makes the manufacturing of the substrate 12 more difficult, more costly, and has poorer protection performance.

[0111] In certain embodiments, the power generation substrate 14 includes at least one of a perovskite thin film cell, a quantum dot photovoltaic cell, a dye-sensitized solar cell, and an organic solar cell.

[0112] In this way, the curved photovoltaic element 100 can realize the photoelectric conversion process, thereby ensuring the power supply to users.

[0113] Specifically, in one embodiment, the power generation substrate 14 can be formed by spraying any one of perovskite thin film cells, quantum dot photovoltaic cells, dye-sensitized solar cells or organic solar cells, so as to ensure that the power generation substrate 14 performs the photoelectric conversion process normally, thereby ensuring the power generation efficiency of the curved photovoltaic device 100.

[0114] In another embodiment, the power generation substrate 14 can also be formed by spraying any two of perovskite thin film cells, quantum dot photovoltaic cells, dye-sensitized solar cells and organic solar cells, such as perovskite thin film cells + quantum dot photovoltaic cells, perovskite thin film cells + dye-sensitized solar cells, perovskite thin film cells + organic solar cells, quantum dot photovoltaic cells + dye-sensitized solar cells, quantum dot photovoltaic cells + organic solar cells or dye-sensitized solar cells + organic solar cells, that is, the power generation substrate 14 is formed by stacking two cells, wherein an insulating layer can be laid between the two cells. In one example, both cells can be transparent materials for improving the photoelectric conversion efficiency, or other materials so that the two cells can work simultaneously, thereby ensuring that the power generation substrate 14 performs the photoelectric conversion process normally, and then ensuring the power generation efficiency of the curved photovoltaic device 100. No specific restrictions are made here.

[0115] In another embodiment, the power generation substrate 14 can also be formed by spraying any three of perovskite thin film cells, quantum dot photovoltaic cells, dye-sensitized solar cells and organic solar cells, such as perovskite thin film cells + quantum dot photovoltaic cells + dye-sensitized solar cells, perovskite thin film cells + quantum dot photovoltaic cells + organic solar cells or quantum dot photovoltaic cells + dye-sensitized solar cells + organic solar cells, that is, the power generation substrate 14 is formed by stacking three cells, wherein an insulating layer can be laid between two adjacent cells. In one example, the three cells can all be transparent materials for improving the photoelectric conversion efficiency, or other materials so that the three cells can work simultaneously, thereby ensuring that the power generation substrate 14 performs the photoelectric conversion process normally, and then ensuring the power generation efficiency of the curved photovoltaic device 100. No specific restrictions are made here.

[0116] In addition, the power generation substrate 14 can also be formed by spraying perovskite thin film cells, quantum dot photovoltaic cells, dye-sensitized solar cells and organic solar cells at the same time, that is, the power generation substrate 14 is formed by stacking four cells, wherein an insulating layer can be laid between two adjacent cells. In one example, the four cells can all be transparent materials to improve the photoelectric conversion efficiency, or they can be other materials so that the four cells work at the same time, thereby ensuring that the power generation substrate 14 performs the photoelectric conversion process normally, and then ensuring the power generation efficiency of the curved photovoltaic device 100. No specific restrictions are made here.

[0117] It can be understood that the power generation substrate 14 can be a semiconductor coating, and a conductive coating can be formed by spraying perovskite thin film cells, quantum dot photovoltaic cells, dye-sensitized solar cells or organic solar cells on the substrate 12, so that an electromotive force can be generated when exposed to light, thereby achieving the purpose of photoelectric conversion.

[0118] Referring to FIG. 1 , in some embodiments, the distance W between the edge of the power generation substrate 14 and the edge of the base material 12 is greater than or equal to 8 mm.

[0119] In this way, the substrate 12 can reserve a certain space to seal the power generation base 14, thereby improving the safety of the curved photovoltaic device 100 and avoiding leakage.

[0120] Specifically, in one embodiment, a suitable distance should be selected between the edge of the power generation substrate 14 and the edge of the substrate 12, so that the substrate 12 reserves a certain edge length to cover one side of the power generation substrate 14, thereby ensuring that the curved photovoltaic device 100 has a certain insulation property to avoid leakage, fire and the like.

[0121] It can be understood that the remaining exposed portions of the power generation substrate 14 can be sealed and wrapped by the packaging member 30 , so that the power generation substrate 14 is integrally sealed, thereby ensuring the safety of the curved photovoltaic device 100 .

[0122] In one embodiment, the distance W between the edge of the power generation substrate 14 and the edge of the substrate 12 is greater than or equal to 8 mm to ensure that the substrate 12 has a certain insulation property, thereby ensuring that the power generation substrate 14 works safely on the substrate 12 and avoiding leakage.

[0123] In one embodiment, when the distance W between the edge of the power generation substrate 14 and the edge of the substrate 12 is less than 8 mm, the distance W is too small, making it difficult for the substrate 12 to wrap the edge of the power generation substrate 14, which is prone to leakage risk and poor safety.

[0124] The upper limit of the distance W can be determined based on empirical values ​​and is not specifically limited here. The distance W only needs to be greater than or equal to 8 mm.

[0125] For example, in some examples, the distance W may be 8 mm, 8.2 mm, 8.5 mm, 8.7 mm, or 8.9 mm, etc.

[0126] Referring to FIG. 2 , in some embodiments, the curved photovoltaic device 100 includes two conductive members 70 . The two conductive members 70 are spaced apart, and each conductive member 70 is electrically connected to the power generation substrate 14 .

[0127] In this way, the current can be guided to output safely so that users can use electricity safely.

[0128] Specifically, in one embodiment, the conductive member 70 has the function of collecting and draining current, and can safely lead out the current, thereby ensuring the safety of the curved photovoltaic device 100 .

[0129] In one embodiment, two conductive members 70 are arranged at intervals, and each conductive member 70 is electrically connected to the power generation substrate 14 to avoid short circuit caused by contact between the two conductive members 70. The two conductive members 70 are equivalent to two electrodes connecting the power generation substrate 14, so that the current generated by the power generation substrate 14 can be collected and discharged through the two conductive members 70, thereby ensuring safe use of electricity by users.

[0130] In some embodiments, the conductive member 70 is a conductive tape.

[0131] In this way, the welding process is reduced, the circuit connection structure is simplified, and the cost is reduced.

[0132] Specifically, in one embodiment, as shown in FIG2 , the conductive member 70 is a conductive tape, which can reduce process steps and wiring, lower production costs, and ensure that the current of photoelectric conversion is safely supplied to users, thereby being highly practical compared to methods such as welding circuits.

[0133] In one embodiment, the conductive tape may include a conductive adhesive surface and a copper tape surface. Both the conductive adhesive surface and the copper tape surface are conductive. The conductive adhesive surface also has an adhesive effect, which can be used to adhere the conductive tape to the power generation substrate 14 and transmit current to the copper tape surface, thereby leading out through the copper tape surface for user use. It has a simple structure and good safety.

[0134] Please refer to Figure 6, which shows that the wire 210 of the photovoltaic panel 200 in the related art is welded on the battery cell 220 to lead the current of the battery cell 220. However, the wire 210 has more wiring and the cost is higher. At the same time, the wire 210 needs to be welded on the battery cell 220, which increases the welding process and makes the structure more complicated, thereby making the packaging cost of the photovoltaic panel 200 higher.

[0135] Referring to FIG. 2 , in some embodiments, a curved photovoltaic element 100 includes an insulating element 90 , and a conductive element 70 includes a first portion 72 and a second portion 74 connected to each other. The first portion 72 extends along a first direction, the second portion 74 of one conductive element 70 extends along a second direction, and the second portion 74 of another conductive element 70 extends along a third direction. The first direction is perpendicular to the second and third directions, and the second direction is opposite to the third direction.

[0136] The insulating member 90 is located between the second portion 74 and the power generation substrate 14 .

[0137] In this way, the conductive member 70 is safely led out, thereby ensuring that the conductive member 70 outputs current safely, thereby ensuring safe power supply to the curved photovoltaic device 100.

[0138] Specifically, in one embodiment, the insulating member 90 can be an insulating tape to prevent the conductive member 70 from forming a short circuit during the lead-out process, for example, the second part 74 crosses the power generation substrate 14 along the second direction or the third direction, thereby ensuring the safe lead-out of the conductive member 70 and further ensuring the safe power supply of the curved photovoltaic member 100.

[0139] In one embodiment, the first portion 72 extends along a first direction, that is, the first direction can be a front-to-back direction, so that the two first portions 72 are respectively connected to the two electrodes of the power generation substrate 14 and extend along the front-to-back direction, thereby ensuring that current is collected and conducted from the power generation substrate 14.

[0140] In one embodiment, the second portion 74 of one conductive member 70 extends along the second direction, and the second portion 74 of the other conductive member 70 extends along the third direction, so that the current is transmitted from the first portion 72 to the second portion 74, and the current is separated by insulating tape during the conduction process to avoid the second portion 74 causing a short circuit in the power generation substrate 14, thereby improving the safety of current conduction.

[0141] In one embodiment, the conductive member 70 further includes a third portion 76, that is, the third portion 76 is substantially vertically connected to the second portion 74 to serve as an extraction electrode, thereby leading the current generated by the power generation substrate 14 through the two electrodes "+" and "-" shown in the figure, which is safer.

[0142] In summary, by disposing the insulating member 90 between the power generation substrate 14 and the second portion 74 , the conductive member 70 can safely lead out the current, thereby ensuring safe power supply to the curved photovoltaic element 100 .

[0143] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that specific features, structures, materials, or characteristics described in conjunction with an embodiment or example are included in at least one embodiment or example of the present application. In this specification, 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 any one or more embodiments or examples.

[0144] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A curved photovoltaic device, wherein: include: a first plate comprising a flexible substrate and a power generation substrate, wherein the power generation substrate is provided on a side surface of the substrate along a thickness direction; Package; A rigid second plate, the packaging member connects the second plate and the side of the substrate provided with the power generation substrate, and the packaging member packages the power generation substrate.

2. The curved photovoltaic device according to claim 1, wherein: The packaging component is provided with a receiving cavity, and the power generation substrate is located in the receiving cavity.

3. The curved photovoltaic device according to claim 1 or 2, wherein: The packaging component is a packaging film.

4. The curved photovoltaic device according to claim 3, wherein: The material of the packaging film includes at least one of EVA material, TPO material, PVB material and POE material.

5. The curved photovoltaic device according to any one of claims 1 to 4, wherein: The second plate is a rigid plate with a curved surface, and the base material is a flexible member that can be bent to form the same curved surface as the second plate.

6. The curved photovoltaic device according to claim 5, wherein: The material of the rigid plate includes glass, aluminum alloy or composite glass fiber material.

7. The curved photovoltaic device according to any one of claims 1 to 6, wherein: The power generation substrate is formed on the base material by coating.

8. The curved photovoltaic device according to any one of claims 1 to 7, wherein: The material of the substrate includes at least one of glass, PET material and composite glass fiber material.

9. The curved photovoltaic device according to any one of claims 1 to 8, wherein: The thickness of the substrate is selected from the range [0.1 mm, 1.6 mm].

10. The curved photovoltaic device according to any one of claims 1 to 9, wherein: The power generation substrate includes at least one of a perovskite thin film cell, a quantum dot photovoltaic cell, a dye-sensitized solar cell and an organic solar cell.

11. The curved photovoltaic device according to any one of claims 1 to 10, wherein: The distance between the edge of the power generation substrate and the edge of the base material is greater than or equal to 8 mm.

12. The curved photovoltaic device according to any one of claims 1 to 11, wherein: The curved photovoltaic element includes two conductive elements, which are spaced apart from each other, and each conductive element is electrically connected to the power generation substrate.

13. The curved photovoltaic device according to claim 12, wherein: The conductive member is a conductive tape.

14. The curved photovoltaic device according to claim 12 or 13, wherein: The curved photovoltaic element includes an insulating element, and the conductive element includes a first portion and a second portion connected to each other, the first portion extends along a first direction, the second portion of one of the conductive elements extends along a second direction, and the second portion of another conductive element extends along a third direction, the first direction is perpendicular to the second and third directions, and the second direction is opposite to the third direction; The insulating member is located between the second portion and the power generation substrate.

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