Photovoltaic piece, photovoltaic module and photovoltaic system

Abstract

The utility model provides a photovoltaic piece, a photovoltaic module and a photovoltaic system. The photovoltaic piece comprises a photovoltaic panel and a junction box. The photovoltaic panel comprises a first bending part, a first body part, a second bending part and a second body part, the first bending part, the first body part, the second bending part and the second body part are sequentially connected in the first direction, the first bending part is bent relative to the first body part, the second bending part is bent relative to the second body part, and the first body part is bent relative to the second body part; the second bending part and the second body part form an accommodating space. The junction box is electrically connected with the photovoltaic panel, and the junction box is arranged in the accommodating space. The containing space can provide partial protection for the junction box, the second bending part and the second body part can shield the junction box from sunlight and rainwater, the junction box is prevented from being irradiated by the sunlight, the temperature is too high, or short circuit caused by contact with the rainwater is avoided, the service life of the junction box is prolonged, and the containing space is the space occupied by the structure of the photovoltaic panel. The junction box is located in the containing space, no extra space is occupied, and the layout of the photovoltaic piece is optimized.

Description

Technical Field

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

[0002] A photovoltaic (PV) system is a product that generates electricity using solar energy while also providing shade, heat insulation, and rain protection. It can be applied to outdoor public areas, the perimeter of large commercial facilities, or the courtyards of private residences. The junction box collects the electrical energy generated by the PV panels and transmits it to external devices via wires. In current technology, junction boxes are typically installed directly on the back or side of the PV panels, in a relatively exposed position. This makes them susceptible to external environmental factors, such as excessively high temperatures from direct sunlight or short circuits caused by rain, thus reducing the junction box's lifespan and reliability, and also affecting the overall aesthetics of the PV system. Utility Model Content

[0003] In view of the above problems, this application provides a photovoltaic component, a photovoltaic module, and a photovoltaic system.

[0004] The photovoltaic component provided in this application includes a photovoltaic panel and a junction box. The photovoltaic panel includes a first bent portion, a first body portion, a second bent portion, and a second body portion. In a first direction, the first bent portion, the first body portion, the second bent portion, and the second body portion are sequentially connected. The first bent portion is bent relative to the first body portion, and the second bent portion is bent relative to the second body portion. The second bent portion and the second body portion form an accommodating space. The junction box is electrically connected to the photovoltaic panel and is disposed within the accommodating space.

[0005] In some embodiments, the photovoltaic panel includes a light-facing side and a back-facing side facing away from each other, the junction box is mounted on the back-facing side of the second body, and the first body has a battery layer inside.

[0006] In some embodiments, in the first direction, the size of the first body portion is larger than the size of the second body portion.

[0007] In some embodiments, in the second direction, the size of the second body portion is not less than the size of the first body portion, and the second direction is perpendicular to the first direction.

[0008] In some embodiments, in a third direction, the light-facing surface of the second body portion is higher than the light-facing surface of the first body portion, and the third direction is perpendicular to the first direction.

[0009] In some embodiments, a first transition angle is formed between the first bent portion and the first body portion, and a second transition angle is formed between the second bent portion and the second body portion, wherein the first transition angle is equal to the second transition angle.

[0010] In some embodiments, in a third direction, the first body portion is located between the first bend and the second bend, the second bend portion is located between the first body portion and the second body portion, and the third direction is perpendicular to the first direction.

[0011] In some embodiments, in a third-party orientation, the first bent portion has a first dimension relative to the light-facing surface of the first body portion, and the second bent portion has a second dimension relative to the light-facing surface of the second body portion, wherein the first dimension is less than or equal to the second dimension.

[0012] This application also provides a photovoltaic module, which includes at least two photovoltaic modules as described in any of the above embodiments. At least two of the photovoltaic modules are sequentially overlapped in the first direction. In the first direction, in two adjacent photovoltaic panels, the first bent portion and the first body portion of one photovoltaic panel overlap the second bent portion and the second body portion of the other photovoltaic panel, respectively.

[0013] In some embodiments, the photovoltaic panel further includes a connecting portion, which is disposed at least on opposite sides of the first body portion in a second direction, wherein two adjacent photovoltaic elements are connected by the connecting portion in the second direction, and the first direction and the second direction are perpendicular.

[0014] This application also provides a photovoltaic system, which includes a support component and a photovoltaic module as described in any of the above embodiments.

[0015] The photovoltaic components, modules, and systems of this application, in a first direction, involve the first bend and the first body of one photovoltaic panel overlapping the second bend and the second body of another photovoltaic panel, respectively. This allows multiple photovoltaic panels to be connected in the first direction using the panel's own structure without the need for other connectors, improving installation efficiency. The junction box is located within the accommodating space formed by the second bend and the second body. This space provides partial protection for the junction box, shielding it from sunlight and rain, preventing overheating due to sunlight or short circuits caused by rain, thus extending its lifespan. The accommodating space is the space occupied by the photovoltaic panel's own structure; the junction box, located within this space, requires no additional space, optimizing the photovoltaic component layout.

[0016] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0017] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0018] Figure 1 This is a perspective view of a photovoltaic system according to some embodiments of this application;

[0019] Figure 2 This is a three-dimensional schematic diagram of a photovoltaic system according to some embodiments of this application from another perspective;

[0020] Figure 3 for Figure 1 A three-dimensional structural schematic diagram of a photovoltaic component in one of the embodiments of the photovoltaic system shown;

[0021] Figure 4 for Figure 3 A three-dimensional structural schematic diagram of the photovoltaic device from another perspective;

[0022] Figure 5 for Figure 1 A three-dimensional structural schematic diagram of the photovoltaic components in some other embodiments of the photovoltaic system shown;

[0023] Figure 6 for Figure 1 The diagram shows the structure of a photovoltaic module in a photovoltaic system.

[0024] The attached icons are numbered as follows:

[0025] Photovoltaic system 10000; photovoltaic module 1000; supporting module 3000; photovoltaic component 100; photovoltaic panel 10; first body 11; first bending part 12; second body 13; second bending part 14; connecting part 15; light-facing surface 101; backlighting surface 103; battery layer 18; junction box 30; accommodating space 300 Detailed Implementation

[0026] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0028] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0029] In this document, the term "implementation" means that a specific feature, structure, or characteristic described in connection with an implementation may be included in at least one implementation of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same implementation, nor is it a separate or alternative implementation mutually exclusive with other implementations. It will be explicitly and implicitly understood by those skilled in the art that the implementations described herein can be combined with other implementations.

[0030] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, the simultaneous existence of the support arm, connecting arm, and cable tray, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following associated objects have an "or" relationship.

[0031] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple groups" refers to two or more (including two groups), and "multiple pieces" refers to two or more (including two pieces).

[0032] In the description of the embodiments of this application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "level", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of 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. Therefore, they should not be construed as limitations on the embodiments of this application.

[0033] In the description of the embodiments of this application, unless otherwise explicitly specified and limited, the technical terms such as "installation", "connection", "linking", and "fixing" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components.

[0034] Please see Figures 1-2 The photovoltaic system 10000 is a photovoltaic product capable of generating electricity using solar energy, while also providing functions such as shading, heat insulation, and rain protection. The photovoltaic system 10000 can be applied to outdoor public areas, the perimeter of large commercial facilities, or private residences. For example, the photovoltaic system 10000 can be installed on a roof. This application uses a rooftop photovoltaic system 10000 as an example for illustration. The photovoltaic system 10000 includes a support component 3000 and photovoltaic modules 1000, with the photovoltaic modules 1000 mounted on the support component 3000.

[0035] The support component 3000 is a structure in the photovoltaic system 10000 that provides installation and support for the photovoltaic modules 1000. The support component 3000 can 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 support component 3000 can be made of metallic materials, such as aluminum alloy. This improves the structural strength of the support component 3000, enhances the photovoltaic system 10000's ability to withstand external environmental conditions (such as wind, rain, and snow), and ensures the stability and reliability of the photovoltaic system 10000's operation. It should be noted that in some embodiments, the overall shape of the support component 3000 may include, but is not limited to, square, cylindrical, and rhomboid shapes. This allows the support component 3000 to adapt to photovoltaic modules 1000 of different sizes and shapes. For example, the support component 3000 can be a roof purlin or a roof structure without purlins, and the photovoltaic module 1000 can be directly or indirectly installed on the support component 3000 through mounting components, etc.

[0036] The photovoltaic module 1000 includes a photovoltaic element 100, which is a solar energy conversion device that converts solar energy into electrical energy. The photovoltaic element 100 can be different types of solar energy conversion devices, such as monocrystalline silicon, polycrystalline silicon, or thin-film solar cells. Users can select photovoltaic panels 10 of different efficiencies and sizes according to their needs and the supporting module 3000. In this application, the length direction of the photovoltaic element 100 is defined as the first direction X, the width direction as the second direction Y, and the thickness direction as the third direction Z. It should be noted that the thickness direction of the photovoltaic element 100 refers to the thickness direction of the body portion 11 of the photovoltaic element 100 described below.

[0037] The photovoltaic module 1000 is mounted on the support component 3000. On one hand, it absorbs sunlight and converts solar energy into electrical energy for power generation. On the other hand, it covers the support component 3000, reducing sunlight penetration into the photovoltaic system 10000, thus providing a shading effect. The interior of the photovoltaic system 10000 refers to the space below the photovoltaic module 1000 and enclosed by the support component 3000. In some embodiments, the photovoltaic module 1000 can be detachably installed on the support component 3000, facilitating its removal for maintenance or replacement. Detachable connections include, but are not limited to, bolted connections and snap-fit ​​connections. In other embodiments, the photovoltaic module 1000 can be non-detachably installed on the support component 3000. This improves the bonding strength between the photovoltaic module 10000 and the support component 3000, enhancing the photovoltaic system 10000's resistance to external environmental factors and ensuring its stability and reliability. Non-detachable connections include, but are not limited to, bonding or welding.

[0038] Please see Figures 1-3 The photovoltaic component 100 provided in this application includes a photovoltaic panel 10 and a junction box 30. The photovoltaic panel 10 includes a first bending portion 12, a first body portion 11, a second bending portion 14, and a second body portion 13. In a first direction X, the first bending portion 12, the first body portion 11, the second bending portion 14, and the second body portion 13 are connected sequentially. The first bending portion 12 is bent relative to the first body portion 11, and the second bending portion 14 is bent relative to the second body portion 13. The second bending portion 14 and the second body portion 13 form an accommodating space 300. The junction box 30 is electrically connected to the photovoltaic panel 10 and is disposed within the accommodating space 300.

[0039] Specifically, the photovoltaic panel 10 is the component in the photovoltaic module 100 that converts solar energy into electrical energy. The conversion process can be direct or indirect. Direct conversion means that the photovoltaic panel 10 can directly convert solar energy into electrical energy, while indirect conversion means that the photovoltaic panel 10 can convert solar energy into chemical energy or other energy forms before converting it into electrical energy. When multiple photovoltaic modules 100 are installed, the photovoltaic modules 100 are arranged sequentially along the first direction X and / or the second direction Y to cover the roof. Among them, the photovoltaic modules 100 arranged along the first direction X overlap sequentially. Overlapping means that two adjacent photovoltaic modules 100 in the first direction X partially overlap in the first direction X, which can ensure the stability and continuity of the photovoltaic module 1000 in the overall structure, prevent gaps or misalignments between photovoltaic modules 100 due to external factors such as wind and vibration, and thus improve the installation stability of the photovoltaic module 1000 in the first direction X.

[0040] The first body portion 11 is used to convert solar energy into electrical energy. The cross-sectional shape of the first body portion 11 in the XY plane may include, but is not limited to, regular or irregular shapes such as square, circle, triangle, and rhombus. In this embodiment, only a square cross-sectional shape of the photovoltaic panel 10 is used as an example. The connector in the first body portion 11 can transmit the converted electrical energy to the junction box 30, and the junction box 30 can then transmit the electrical energy to an external device, which may be an energy storage device capable of storing electrical energy. The first bending portion 12 is connected to any end of the first body portion 11 and bends relative to the first body portion 11. The first bending portion 12 is connected to one end of the first body portion 11 in the first direction X, and the direction and angle of the bend can be adjusted according to actual design requirements. For example, in this application, the bend extends in the third direction Z in a direction away from the first body portion 11, and the bending angle is ninety degrees. There is a certain height difference and spatial interval between the first bending portion 12 and the first body portion 11. After installation on the roof, there is a gap between the roof and the first bending portion 12 and the first body portion 11. The photovoltaic panel 10 absorbs heat under sunlight, causing its temperature to rise. The gaps between the panels act as heat dissipation channels, dissipating some of the heat from the photovoltaic panel 10.

[0041] In some embodiments, the first body portion 11 and the first bending portion 12 are an integral structure, that is, the first body portion 11 and the first bending portion 12 are a single unit, thereby improving the bonding strength between the first body portion 11 and the first bending portion 12 and preventing separation of the first body portion 11 and the first bending portion 12 during the operation of the photovoltaic panel 10, thus ensuring the stability and reliability of the photovoltaic panel 10. In other embodiments, the first body portion 11 and the first bending portion 12 are separate structures, that is, the first body portion 11 and the first bending portion 12 are two different structures. In one example, the first body portion 11 and the first bending portion 12 can be joined together by a detachable connection method, including but not limited to snap-fit ​​connections or threaded connections. In another example, the first body portion 11 and the first bending portion 12 can be joined together by a non-detachable connection method, including but not limited to bonding or welding.

[0042] The second bending portion 14 is located between the first body portion 11 and the second body portion 13. The second bending portion 14 is formed by bending one end of the second body portion 13 toward the first body portion 11 to form an accommodating space 300. The second bending portion 14 is connected to the first body portion 11 at one end in the first direction X and to the second body portion 13 at the other end in the first direction X, thereby creating a certain height difference between the first body portion 11 and the second body portion 13. Multiple photovoltaic elements 100 can be interconnected to form a photovoltaic module 1000. In the photovoltaic module 1000, when at least two photovoltaic elements 100 are sequentially overlapped in the first direction X, in two adjacent photovoltaic panels 10 in the first direction X, the first bending portion 12 and the first body portion 11 of one photovoltaic panel 10 overlap the second bending portion 14 and the second body portion 13 of the other photovoltaic panel 10, thereby enabling the connection of multiple photovoltaic panels 10 in the first direction X without the use of other connectors, and enabling the installation of photovoltaic panels 10 even in a purlin-less roof structure. The direction and angle of the bend in the second bending portion 14 can be adjusted according to actual design requirements. The cross-sectional shape of the second body portion 13 in the XY plane can be, but is not limited to, regular or irregular shapes such as square, circle, triangle, and rhombus. In this embodiment, only a rectangular cross-sectional shape of the second body portion 13 is used as an example for illustration.

[0043] Junction box 30 is used to collect and transmit electrical energy generated by photovoltaic panel 10. Junction box 30 contains wires, terminals, etc., and can be connected to the cell layer 18 of photovoltaic panel 10. In photovoltaic module 1000, junction boxes 30 of different photovoltaic panels 10 can be connected in series or parallel via electrical connectors. In this application, each photovoltaic module 100 includes at least one junction box 30. Receiving space 300 is configured to accommodate the junction box 30 of at least one of two adjacent photovoltaic panels 10. This application illustrates the use of the receiving space 300 accommodating the junction box 30 of the lower photovoltaic module 100 in the accompanying drawings.

[0044] In this application, in two adjacent photovoltaic panels 10 in the first direction X, the first bend portion 12 and the first body portion 11 of one photovoltaic panel 10 overlap with the second bend portion 14 and the second body portion 13 of the other photovoltaic panel 10, respectively. This allows multiple photovoltaic panels 10 to be connected in the first direction X using only the structure of the photovoltaic panel 10 itself, without the need for other connectors, thus improving the installation efficiency of the photovoltaic panels 10. The junction box 30 is located within the accommodating space 300 formed by the second bend portion 14 and the second body portion 13. The accommodating space 300 provides partial protection for the junction box 30. The second bend portion 14 and the second body portion 13 can shield the junction box 30 from sunlight and rain, preventing it from overheating due to sunlight exposure or short circuits caused by rain, thereby extending the lifespan of the junction box 30. The accommodating space 300 is the space occupied by the structure of the photovoltaic panel 10 itself. The junction box 30 is located within the accommodating space 300, requiring no additional space, thus optimizing the layout of the photovoltaic components 100.

[0045] Please see Figures 2-4 In some embodiments, the photovoltaic panel 10 includes a light-facing surface 101 and a back-facing surface 103 facing away from each other, the junction box 30 is installed on the back-facing surface 103 of the second body part 13, and the first body part 11 is provided with a battery layer 18.

[0046] Specifically, on the third direction Z of the photovoltaic panel 10, the photovoltaic panel 10 includes a light-facing surface 101 and a back-lighting surface 103 facing away from each other. The light-facing surface 101 faces the external environment after the photovoltaic panel 10 is installed, allowing it to directly receive sunlight and perform photoelectric conversion. The back-lighting surface 103 faces away from the sun, preventing direct sunlight. The lower and upper photovoltaic panels 10 at least partially overlap on their projection planes perpendicular to the third direction Z. The junction box 30 is installed on the back-lighting surface 103 of the second body 13, preventing direct sunlight from hitting the junction box 30, ensuring the junction box 30 maintains a suitable temperature, and extending its lifespan. The battery layer 18 consists of multiple battery cells. When sunlight shines on the battery layer 18, photon energy causes electrons in the battery cells to transition, thereby generating direct current (DC) power. The generated electrical energy is transmitted to the junction box 30 through the connector inside the photovoltaic panel 10. The junction box 30 collects the electrical energy generated by the battery unit and transmits the electrical energy to the energy storage device or directly to the electrical equipment through the external electrical connector.

[0047] Please see Figure 3 In some embodiments, in the first direction X, the size L1 of the first body portion 11 is larger than the size L2 of the second body portion 13.

[0048] Specifically, the size L1 of the first body portion 11 can be 1.2 times, 2.2 times, 3 times, 3.4 times, 4.2 times, 5.5 times, 5.8 times, 6.1 times, 7.2 times, 9.2 times, etc., of the size L2 of the second body portion 13, and is not limited in this application. If the size L1 of the first body portion 11 is smaller than the size L2 of the second body portion 13 in the first direction X, the smaller size L1 of the first body portion 11 will result in a larger gap when the photovoltaic components 100 are overlapped. The first body portion 11 of the upper photovoltaic panel 10 cannot cover the second body portion 13 of the lower photovoltaic panel 10, resulting in a reduction in the contact area between the photovoltaic panels 10, increasing the risk of loosening between the photovoltaic panels 10, and affecting the firmness and stability of the connection. In the first direction X, the size L1 of the first body portion 11 is larger than the size L2 of the second body portion 13. This ensures that the first body portion 11 of the upper photovoltaic panel 10 covers the second body portion 13 of the lower photovoltaic panel 10, resulting in a better contact area and alignment accuracy when the photovoltaic panels 10 overlap, reducing overlap gaps and enhancing the connection strength between the photovoltaic panels 10. The larger size also ensures a more stable connection between the photovoltaic panels 10. Furthermore, the larger size L1 of the first body portion 11 can accommodate more battery layers 18, increasing the power output of the photovoltaic panel 10.

[0049] Please see Figure 3 and Figure 5 In some embodiments, in the second direction Y, the size L3 of the second body portion 13 is not less than the size L4 of the first body portion 11.

[0050] Specifically, in the second direction Y, the size L3 of the second body portion 13 can be 1, 2.2, 3, 3.4, 4.2, 5.5, 5.8, 6.1, 7.2, or 9.2 times the size of the first body portion 11, and is not limited in this application. When multiple photovoltaic elements 100 are arranged sequentially in the second direction Y, the size L3 of the second body portion 13 is equal to the size L4 of the first body portion 11. Figure 3 This allows the photovoltaic elements 100 to be arranged neatly and aesthetically. When multiple photovoltaic elements 100 are arranged sequentially in the second direction Y, the dimension L3 of the second body portion 13 is larger than the dimension L4 of the first body portion 11. Figure 5 Therefore, the second body portions 13 of adjacent photovoltaic elements 100 partially overlap. This partial overlap prevents gaps between photovoltaic elements 100, thus preventing rainwater and snowmelt from seeping in and avoiding leakage, thereby enhancing the waterproof performance of the photovoltaic module 1000. Secondly, the overlapping second body portions 13 provide a larger contact area between photovoltaic elements 100, making the connection more secure and improving the overall structural stability of the photovoltaic module 1000, enabling it to better resist the effects of external environmental factors such as wind, rain, and snow. In addition, the larger size L3 of the second body portion 13 provides greater tolerance for installation operations, facilitating installation by installers and improving installation efficiency.

[0051] Please see Figure 2 and Figure 3 In some embodiments, in the third direction Z, the light-facing surface 101 of the second body part 13 is higher than the light-facing surface 101 of the first body part 11.

[0052] Specifically, if the light-facing surface 101 of the second body portion 13 is lower than the light-facing surface 101 of the first body portion 11, and the light-facing surface 101 of the first body portion 11 is higher, a slope or step will be formed when two adjacent photovoltaic panels 10 in the first direction X overlap, making it impossible for the first body portion 11 to fit snugly against the second body portion 13. This will result in the first body portion 11 not being able to stably overlap with the second body portion 13. If the light-facing surface 101 of the second body portion 13 is higher than the light-facing surface 101 of the first body portion 11, the first body portion 11 can stably overlap with the second body portion 13, ensuring a tight fit between the first body portion 11 and the second body portion 13. This avoids problems of unstable overlap and loosening caused by height mismatch, thereby improving the installation stability of the photovoltaic module 1000 in the first direction X. The height of the light-facing surface 101 of the second body part 13 also helps to guide water flow, reduce water accumulation in the second body part 13, prevent water from accumulating in the second body part 13 and causing water to flow to the junction box 30, reduce the risk of water leakage, and improve the waterproof performance and reliability of the photovoltaic module 1000.

[0053] Please see Figure 2 In some embodiments, a first transition angle R1 is formed between the first bending portion 12 and the first body portion 11, and a second transition angle R2 is formed between the second bending portion 14 and the second body portion 13, wherein the first transition angle R1 is equal to the second transition angle R2.

[0054] In some embodiments, a first transition angle R1 is formed between the first bent portion 12 and the first body portion 11, and a second transition angle R2 is formed between the second bent portion 14 and the second body portion 13. The first transition angle R1 is equal to the second transition angle R2. The transition angles (first transition angle R1 and second transition angle R2) refer to chamfered or rounded corner structures, meaning that at the junction of the two components (between the first bent portion 12 and the first body portion 11, or between the second bent portion 14 and the second body portion 13), the edges form a certain angle through a smooth transition, rather than a sharp right angle. The first transition angle R1 and the second transition angle R2 can avoid stress concentration, reduce friction and damage between the first bent portion 12 and the first body portion 11, or between the second bent portion 14 and the second body portion 13, and improve the service life of the photovoltaic panel 10.

[0055] When two photovoltaic panels 10 are overlapped, the first transition angle R1 equals the second transition angle R2, ensuring smoother contact between the edges of the two photovoltaic panels 10 during the overlap process. This avoids misalignment or incomplete fit due to inconsistent angles, resulting in a tighter contact between the photovoltaic panels 10. This improves the strength of the connection and reduces potential problems caused by loose joints, such as water penetration, thereby enhancing the overall performance and stability of the photovoltaic module 1000. Simultaneously, the first transition angle R1 equaling the second transition angle R2 also helps simplify the manufacturing process and improve production efficiency.

[0056] Please see Figures 2-4 In some embodiments, on the third direction Z, the first body portion 11 is between the first bending portion 12 and the second bending portion 14, and the second bending portion 14 is located between the first body portion 11 and the second body portion 13.

[0057] Specifically, in the third direction Z, the first body portion 11 is located between the first bent portion 12 and the second bent portion 14, and the second bent portion 14 is located between the first body portion 11 and the second body portion 13. That is, the heights of the first bent portion 12, the first body portion 11, the second bent portion 14, and the second body portion 13 increase sequentially, with the second body portion 13 being the highest. The photovoltaic panel 10 is stepped. Thus, since the second bent portion 14 is higher than the first body portion 11 and the first bent portion 12, there is a height difference between the first bent portion 12 and the second bent portion 14, and the second body portion 13 is the highest. When the two photovoltaic panels 10 overlap, it can be ensured that the first body portion 11 and the first bent portion 12 of the upper photovoltaic panel 10 overlap the second bent portion 14 and the second body portion 13 of the lower photovoltaic panel 10.

[0058] Please see Figure 2 In some embodiments, in the third direction Z, the first bending portion 12 has a first dimension L5 relative to the light-facing surface 101 of the first body portion 11, and the second bending portion 14 has a second dimension L6 relative to the light-facing surface 101 of the second body portion 13, wherein the first dimension L5 is less than or equal to the second dimension L6.

[0059] Specifically, if the first dimension L5 is larger than the second dimension L6, when adjacent photovoltaic panels 10 in the first direction X overlap, the first bend 12 of the upper photovoltaic panel 10 is higher than the second bend 14 of the lower photovoltaic panel 10. After overlapping, the contact area between the first body portion 11 and the second body portion 13 is reduced, increasing the risk of loosening between the photovoltaic panels 10. This also allows external substances such as moisture and dust to enter between the photovoltaic panels 10, affecting the waterproof performance and service life of the junction box 30. If the first dimension L5 is less than or equal to the second dimension L6, when adjacent photovoltaic panels 10 in the first direction X overlap, the first body portion 11 of the upper photovoltaic panel 10 can overlap the second body portion 13 of the lower photovoltaic panel 10, resulting in a tighter connection, reducing the gap between the first body portion 11 of the upper photovoltaic panel 10 and the second body portion 13 of the lower photovoltaic panel 10, and improving the connection strength of the photovoltaic panels 10.

[0060] Please see Figure 6 In some embodiments, the photovoltaic panel 10 further includes a connecting portion 15, which is provided at least on opposite sides of the first body portion 11 in the second direction Y. In the second direction Y, two adjacent photovoltaic elements 100 are connected by the connecting portion 15.

[0061] Specifically, when multiple photovoltaic elements 100 are installed, the photovoltaic elements 100 are arranged sequentially along the first direction X and / or the second direction Y to cover the roof. Two adjacent photovoltaic elements 100 along the second direction Y are connected by a connecting part 15. This prevents the photovoltaic elements 100 from shifting or loosening in the second direction Y, avoiding misalignment of the photovoltaic module 1000 due to long-term use or external factors, and improving the stability of the photovoltaic module 1000. The connecting part 15 can be one or more, and is not limited in this application. For example, a photovoltaic panel 10 in this application includes two connecting parts 15. The connecting part 15 is at least provided in the first body part 11. In other embodiments of this application, the connecting part 15 can also be provided in one or more of the first bending part 12, the second bending part 14, and the second body part 13. For example, the connecting portion 15 of this application is disposed on the first body portion 11 and the first bending portion 12. The connecting portion 15 connects the two opposite sides of the first body portion 11 in the second direction Y and the two opposite sides of the first bending portion 12 in the second direction Y. As a result, the overall size of the connecting portion 15 is relatively long. When two adjacent photovoltaic elements 100 are connected by the connecting portion 15, the connecting portion 15 of the two adjacent photovoltaic elements 100 has a large connection area, which can improve the installation stability of the photovoltaic elements 100 in the second direction Y.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A photovoltaic device, characterized in that, include: A photovoltaic panel includes a first bending portion, a first body portion, a second bending portion, and a second body portion. In a first direction, the first bending portion, the first body portion, the second bending portion, and the second body portion are connected in sequence. The first bending portion is bent relative to the first body portion, the second bending portion is bent relative to the second body portion, and the second bending portion and the second body portion form an accommodating space. and A junction box, electrically connected to the photovoltaic panel, is disposed within the accommodating space.

2. The photovoltaic device according to claim 1, characterized in that, The photovoltaic panel includes a light-facing side and a back-facing side facing away from each other. The junction box is installed on the back-facing side of the second body part, and the first body part has a battery layer inside.

3. The photovoltaic device according to claim 2, characterized in that, In the first direction, the size of the first body portion is larger than the size of the second body portion; and / or, In the second direction, the size of the second body portion is not less than the size of the first body portion, and the second direction is perpendicular to the first direction.

4. The photovoltaic element according to claim 2, characterized in that, In the third direction, the light-facing surface of the second body part is higher than the light-facing surface of the first body part, and the third direction is perpendicular to the first direction.

5. The photovoltaic device according to claim 1, characterized in that, A first transition angle is formed between the first bent portion and the first body portion, and a second transition angle is formed between the second bent portion and the second body portion, wherein the first transition angle is equal to the second transition angle.

6. The photovoltaic device according to claim 1, characterized in that, In the third direction, the first body portion is located between the first bend and the second bend, and the second bend portion is located between the first body portion and the second body portion, and the third direction is perpendicular to the first direction.

7. The photovoltaic device according to claim 1, characterized in that, In the third direction, the first bent portion has a first dimension relative to the light-facing surface of the first body portion, and the second bent portion has a second dimension relative to the light-facing surface of the second body portion, wherein the first dimension is less than or equal to the second dimension.

8. A photovoltaic module, characterized in that, The photovoltaic module includes at least two photovoltaic components as described in any one of claims 1-7, wherein at least two photovoltaic components are sequentially overlapped in the first direction, and in the first direction, in two adjacent photovoltaic panels, the first bend and the first body of one photovoltaic panel are respectively overlapped with the second bend and the second body of the other photovoltaic panel.

9. The photovoltaic module according to claim 8, characterized in that, The photovoltaic panel further includes a connecting portion, which is provided at least on both sides of the first body portion in a second direction. In the second direction, two adjacent photovoltaic elements are connected by the connecting portion. The first direction and the second direction are perpendicular.

10. A photovoltaic system, characterized in that, include: Support components; and The photovoltaic module according to any one of claims 1-9, wherein the photovoltaic module is mounted on the support component.

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