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 body part and a second bending part, the first bending part, the body part and the second bending part are sequentially connected in the width direction, and the first bending part and the second bending part are bent relative to the body part and form containing spaces respectively. The junction box is electrically connected with the photovoltaic panel, and the junction box is arranged in the accommodating space of the first bending part and / or the accommodating space of the second bending part. And the junction box can be hidden in the accommodating space, so that the attractiveness of the photovoltaic piece is kept. The accommodating space can be used as a wire arrangement groove of the junction box, and the cables can be connected and shuttle in the accommodating space, so that on one hand, the cables are hidden, the attractiveness of the photovoltaic piece is kept, and on the other hand, directional guide and fixed support can be provided for the cables, so that the cables can be regularly arranged in the accommodating space; therefore, the smooth routing of the cable of the junction box between the adjacent photovoltaic pieces is ensured.

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 main body portion, and a second bent portion. In the width direction, the first bent portion, the main body portion, and the second bent portion are connected sequentially. The first bent portion and the second bent portion are bent relative to the main body portion and respectively form accommodating spaces. The junction box is electrically connected to the photovoltaic panel and is disposed within the accommodating space of the first bent portion and / or the accommodating space of the second bent portion.

[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 installed on the back-facing side of the first bend and / or the second bend, and the main body is provided with a battery layer.

[0006] In some embodiments, the size of the body portion in the width direction is not less than the size of the first bent portion and / or the second bent portion.

[0007] In some embodiments, the first bend and / or the second bend are provided with openings configured to allow at least a portion of the junction box of an adjacent photovoltaic element to pass through.

[0008] In some embodiments, the first bending portion includes a first extension sub-portion and a first bend portion. The first extension sub-portion extends from the body portion, and the first bend portion bends and extends from the end of the first extension sub-portion away from the body portion, forming a receiving space for the first bending portion together with the first extension sub-portion. The second bending portion includes a second extension sub-portion and a second bend portion. The second extension sub-portion extends from the body portion, and the second bend portion bends and extends from the end of the second extension sub-portion away from the body portion, forming a receiving space for the second bending portion together with the second extension sub-portion.

[0009] In some embodiments, a first angle is formed between the first extension sub-part and the body part, and a second angle is formed between the second bending sub-part and the body part, wherein the first angle is equal to the second angle.

[0010] In some embodiments, the first extension portion and the first bending portion are planar, and the first angle is a bending angle.

[0011] In some embodiments, the second extension portion and the second bending portion are planar, and the second angle is a bending angle.

[0012] This application also provides a photovoltaic module, which includes at least two photovoltaic modules according to any one of the embodiments, wherein at least two photovoltaic elements are sequentially overlapped in the width direction, and in the width direction, in two adjacent photovoltaic panels, the first bent portion of one photovoltaic panel overlaps the second bent portion of the other photovoltaic panel; or, the second bent portion of one photovoltaic panel overlaps the first bent portion of the other photovoltaic panel.

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

[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] In the photovoltaic components, modules, and systems of this application, in the width direction of two adjacent photovoltaic panels, the first bend of one photovoltaic panel can overlap the second bend of another photovoltaic panel. This allows for the connection of multiple photovoltaic panels in the width 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 of the first bend and / or the second bend of the second bend. This accommodating 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 also conceals the junction box, maintaining the aesthetics of the photovoltaic components. Furthermore, the accommodating space is the space occupied by the photovoltaic panel's own structure; the junction box, located within this space, does not require additional space, optimizing the layout of the photovoltaic components. Finally, the accommodating space can serve as a cable management channel for the junction box. Cables can be connected and run within this space, concealing them and maintaining the aesthetics of the photovoltaic components. Furthermore, it provides directional guidance and support for the cables, ensuring they are arranged systematically within the space. This guarantees smooth cable routing between junction boxes connecting adjacent photovoltaic components and improves the neatness of the cable management. The physical boundaries of the accommodating space (such as the inner walls of the second and first bends) naturally constrain the cables within the junction box, limiting cable movement during installation or operation and extending cable lifespan.

[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 three-dimensional schematic diagram of a photovoltaic system according to some embodiments of this application;

[0019] Figure 2 for Figure 1 A three-dimensional schematic diagram of a photovoltaic component in the photovoltaic system shown;

[0020] Figure 3 for Figure 2 A plan view of the photovoltaic components in the photovoltaic system shown.

[0021] Figure 4 for Figure 1 A three-dimensional schematic diagram of another photovoltaic component in the photovoltaic system shown;

[0022] Figure 5 for Figure 1 The diagram shows a plan view of another type of photovoltaic component in the photovoltaic system.

[0023] The attached icons are numbered as follows:

[0024] 10,000 photovoltaic systems; 1,000 photovoltaic modules; 3,000 support components; 100 photovoltaic parts;

[0025] Photovoltaic panel 10; body 11; first bending portion 12; first extension sub-portion 121; first bending portion 123; opening 131; second bending portion 14; second extension sub-portion 141; second bending portion 143;

[0026] Sunlight-facing surface 101; Backlight-facing surface 103; Battery layer 18; Junction box 30;

[0027] Storage space: 300. Detailed Implementation

[0028] 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.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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).

[0034] 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.

[0035] 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.

[0036] Please see Figure 1 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.

[0037] 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 structural component such as a roof column, beam, or purlin to provide a stable support platform for the photovoltaic module 1000, so that the photovoltaic module 1000 can be installed on the roof, other locations of the house besides the roof, or other carriers. The photovoltaic module 1000 can be directly or indirectly installed on the support component 3000 through mounting components, etc.

[0038] Furthermore, in some embodiments, the photovoltaic system 10000 also includes an energy storage device electrically connected to the photovoltaic module 1000. The energy storage device can store the electrical energy generated by the photovoltaic module 1000 and can power loads such as household appliances and portable devices. Of course, the photovoltaic module 1000 can also directly power loads such as household appliances and portable devices. The energy storage device and the photovoltaic module 1000 can be electrically connected via cables or through intermediate devices such as junction boxes or busbars. It should be noted that in some embodiments, the energy storage device can be not only a lithium-ion battery, lead-acid battery, or other types of rechargeable batteries, but also a device capable of storing and releasing electrical energy, such as a supercapacitor.

[0039] Please see Figure 2 or Figure 4 or Figure 5 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 length direction X, the width direction as the width direction Y, and the thickness direction as the thickness direction Z. It should be noted that the thickness direction Z of the photovoltaic element 100 refers to the thickness direction of the body portion 11 of the photovoltaic element 100 described below.

[0040] The photovoltaic module 1000 includes at least two photovoltaic elements 100. Specifically, at least two photovoltaic elements 100 can be connected together in a specific direction by overlapping or splicing to form an integral module (i.e., the photovoltaic module 1000). The photovoltaic module 1000 is mounted on the support component 3000, which on the one hand absorbs sunlight and converts solar energy into electrical energy for power generation, and on the other hand covers the support component 3000, reducing sunlight from reaching the interior of the photovoltaic system 10000, thus providing a shading effect. The interior of the photovoltaic system 10000 refers to the space located below the photovoltaic module 1000 and enclosed by the support component 3000. In some embodiments, the photovoltaic module 1000 can be installed on the support component 3000 using a detachable connection method, which facilitates the removal of the photovoltaic module 1000 from the support component 3000 when maintenance or replacement is required. The detachable connection method includes, but is not limited to, bolt connections and snap-fit ​​connections. In other embodiments, the photovoltaic module 1000 can be installed on the support component 3000 using a non-removable connection method. This can improve the bonding strength between the photovoltaic module 1000 and the support component 3000, enhance the photovoltaic system 10000's ability to resist external environmental factors, and ensure the stability and reliability of the photovoltaic system 10000's operation. The non-removable connection method includes, but is not limited to, bonding or welding.

[0041] For example, at least two photovoltaic elements 100 are connected to each other by overlapping, which makes the connection between adjacent photovoltaic elements 100 faster and more convenient, and facilitates the installation and disassembly of photovoltaic elements 100. This allows for faster and more efficient completion of work during installation and maintenance, improving work efficiency. Furthermore, at least two photovoltaic elements 100 can be connected using fasteners (such as bolts) while overlapping, making the assembled photovoltaic module 1000 more stable and improving the stability and reliability of the photovoltaic module 1000. It should be noted that in some embodiments, the shape and size of the at least two photovoltaic elements 100 can be the same or different. Users can select photovoltaic elements 100 of appropriate shape and size according to specific usage requirements. For example, to adapt to the size of the carrier, users can select at least two different sizes of photovoltaic elements 100.

[0042] Since the photovoltaic module 1000 in this embodiment includes the photovoltaic element 100, it is understood that the photovoltaic module 1000 includes at least the same beneficial effects as the photovoltaic element 100. Therefore, for the beneficial effects of the photovoltaic module 1000, please refer to the beneficial effects of the photovoltaic element 100 described below.

[0043] Please see Figure 1 ,and Figure 2 and Figure 3 ,or Figure 4 ,or Figure 5 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 bent portion 12, a main body portion 11, and a second bent portion 14. In the width direction Y, the first bent portion 12, the main body portion 11, and the second bent portion 14 are connected sequentially. The first bent portion 12 and the second bent portion 14 are bent relative to the main body portion 11 and respectively form accommodating spaces 300. The junction box 30 is electrically connected to the photovoltaic panel 10 and is disposed within the accommodating space 300 of the first bent portion 12 and / or the accommodating space 300 of the second bent portion 14.

[0044] 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 length direction X and / or the width direction Y to cover the roof. Among them, the photovoltaic modules 100 arranged along the length direction X overlap sequentially. Overlapping means that two adjacent photovoltaic modules 100 in the length direction X partially overlap, which can ensure the stability and continuity of the photovoltaic module 1000 in the overall structure, prevent gaps or misalignments between photovoltaic modules 1000 caused by external factors such as wind and vibration, and thus improve the installation stability of the photovoltaic module 1000 in the length direction X.

[0045] The main body 11 is used to convert solar energy into electrical energy. The cross-sectional shape of the main body 11 in the XY plane may be, 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 for explanation. The connector in the main body 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.

[0046] The first bend 12 is connected to one end of the main body 11 in the width direction Y and bends relative to the main body 11 to form the receiving space 300 of the first bend 12. The junction box 30 can be installed on the first bend 12 and housed in the receiving space 300 of the first bend 12. The first bend 12 is connected to one end of the main body 11 in the length direction X, and the direction and angle of the bend can be adjusted according to actual design requirements. The cross-sectional shape of the first bend 12 cut by the YZ plane includes, but is not limited to, square, trapezoidal, semi-circular, and U-shaped shapes. There is a certain height difference and space interval between the first bend 12 and the main body 11. After being installed on the support assembly 3000, there is a receiving space 300 of the first bend 12 between the support assembly 3000 and the first bend 12. The photovoltaic panel 10 absorbs heat under sunlight and its temperature rises. The receiving space 300 of the first bend 12 can serve as a heat dissipation channel to dissipate some of the heat on the photovoltaic panel 10.

[0047] In some embodiments, the body portion 11 and the first bending portion 12 are an integral structure, that is, the body portion 11 and the first bending portion 12 are a single unit, thereby improving the bonding strength between the body portion 11 and the first bending portion 12 and preventing separation of the 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 body portion 11 and the first bending portion 12 are separate structures, that is, the body portion 11 and the first bending portion 12 are two different structures. In one example, the 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 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.

[0048] The second bend 14 is connected to the other end of the main body 11 in the width direction Y and bends relative to the main body 11 to form the receiving space 300 of the second bend 14. The junction box 30 can be installed on the second bend 14 and accommodated in the receiving space 300 of the second bend 14. The second bend 14 is connected to the end of the main body 11 in the length direction X, and the direction and angle of the bend can be adjusted according to actual design requirements. The cross-sectional shape of the second bend 14 cut by the YZ plane includes, but is not limited to, square, trapezoidal, semi-circular, and U-shaped shapes. There is a certain height difference and space interval between the second bend 14 and the main body 11. After installation on the roof, there is a receiving space 300 of the second bend 14 between the roof and the second bend 14. The photovoltaic panel 10 absorbs heat under sunlight and its temperature rises. The receiving space 300 of the second bend 14 can serve as a heat dissipation channel to dissipate some of the heat on the photovoltaic panel 10. The shape, structure, material, and other properties of the first bend 12 and the second bend 14 can be the same or different. Exemplarily, the first bend 12 and the second bend 14 of this application have the same structure and are respectively connected to both ends of the body portion 11 in the width direction Y. The identical structure of the first bend 12 and the second bend 14 facilitates molding and overlapping, improving the manufacturing efficiency of the photovoltaic component. It is understood that when the first bend 12 and the second bend 14 have the same structure, the first bend 12 at least includes the beneficial effects of the second bend 14, and the second bend 14 at least includes the beneficial effects of the first bend 12.

[0049] 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 width direction Y, in two adjacent photovoltaic panels 10 in the width direction Y, the first bend 12 of one photovoltaic panel 10 overlaps the second bend 14 of another photovoltaic panel 10, or the second bend 14 of one photovoltaic panel 10 overlaps the first bend 12 of another photovoltaic panel 10. This allows multiple photovoltaic panels 10 to be connected in the width direction Y without the use of other connectors, and enables the installation of photovoltaic panels 10 even in roof structures without purlins.

[0050] 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 (e.g., cables). 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. That is, the receiving space 300 of a photovoltaic module 100 can accommodate its own junction box 30, or it can accommodate the junction boxes 30 of other photovoltaic modules 100. This application uses the receiving space 300 accommodating its own photovoltaic module 100 as an example for illustration. The receiving space 300 can be the receiving space 300 of the first bend 12 or the receiving space 300 of the second bend 14; the number of junction boxes 30 accommodated by both can be the same or different. The accommodating space 300 can also integrate auxiliary fixing structures such as buckles, strap grooves, or limiting protrusions (not shown) to further enhance the locking effect on the junction box 30 and cables, preventing the junction box 30 and cables from leaving the preset path in dynamic environments such as strong winds and vibrations, thereby ensuring the overall electrical connection stability and safety of the photovoltaic module 1000, while maintaining the neat and uniform appearance of the photovoltaic module 100, and avoiding the exposed junction box 30 and cables from affecting the visual aesthetics or causing safety hazards.

[0051] In this application, in two adjacent photovoltaic panels 10 along the width direction Y, the first bend 12 of one photovoltaic panel 10 can overlap the second bend 14 of the other photovoltaic panel 10. This allows multiple photovoltaic panels 10 to be connected along the width direction Y using the structure of the photovoltaic panels 10 themselves without the need for other connectors, improving the installation efficiency of the photovoltaic panels 10. The junction box 30 is located within the accommodating space 300 of the first bend 12 and / or the second bend 14 of the second bend 14. The accommodating space 300 provides partial protection for the junction box 30, shielding it from sunlight and rain, preventing it from overheating due to sunlight exposure or short-circuiting due to rain, thus extending its lifespan. The accommodating space 300 also conceals the junction box 30, maintaining the aesthetics of the photovoltaic assembly 100. Furthermore, 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 and optimizing the layout of the photovoltaic assembly 100. Finally, the accommodating space 300 can serve as a cable management channel for the junction box 30, allowing cables to connect and run within it. This not only conceals the cables and maintains the aesthetics of the photovoltaic components 100, but also provides directional guidance and fixed support for the cables, ensuring a regular arrangement of them within the accommodating space 300. This guarantees smooth cable routing between adjacent photovoltaic components 100 and improves the neatness of the cable wiring. The physical boundaries of the accommodating space 300 (such as the inner walls of the second bend 14 and the first bend 12) naturally constrain the cables in the junction box 30, limiting cable movement during installation or operation and extending cable lifespan.

[0052] Please see Figure 3 ,or Figure 4 ,or Figure 5 In some embodiments, the photovoltaic panel 10 includes a light-facing surface 101 and a back-lighting surface 103 facing away from each other, the junction box 30 is installed on the back-lighting surface 103 of the first bend portion 12 and / or the second bend portion 14, and the main body 11 is provided with a battery layer 18.

[0053] Specifically, along the thickness 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 junction box 30 is installed on the back-lighting surface 103 of the first bend 12 and / or the second bend 14, 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 power is transmitted to the junction box 30 through connectors inside the photovoltaic panel 10. The junction box 30 collects the power generated by the battery cells and transmits it to an energy storage device or directly to a load through external electrical connections. Furthermore, in some embodiments, the photovoltaic panel 10 further includes a first cover plate and a second cover plate. The first cover plate and the second cover plate are stacked sequentially along the direction from the light-facing surface 101 to the back-facing surface 103, with the battery layer 18 connected between the first cover plate and the second cover plate. The first cover plate and the second cover plate together protect the battery layer 18 and other internal components of the photovoltaic panel 10 from external physical impacts and environmental corrosion, reducing the possibility of damage to the photovoltaic panel 10. The battery layer 18, the first cover plate, and the second cover plate can be connected together by an adhesive film to form a stable and robust structure, improving the overall structural stability. It should be noted that in some embodiments, the first cover plate and the second cover plate can be made of at least one of the following materials: glass, PET, metal, composite fiber, etc.; the adhesive film can be made of at least one of the following materials: EVA, POE, PVB, etc.

[0054] Please see Figure 3 ,or Figure 4 ,or Figure 5 In some embodiments, the size L1 of the body portion 11 is larger than the size L2 of the first bent portion 12 in the width direction Y.

[0055] Specifically, in the width direction Y, the size L1 of the main body 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 first bent portion 12, and is not limited in this application. If the size L1 of the main body 11 is smaller than the size L2 of the first bent portion 12 in the width direction Y, the battery layer 18 of the main body 11 will be insufficient, reducing the photoelectric conversion efficiency of the photovoltaic element 100. At the same time, when the photovoltaic element 100 is installed on the support component 3000, the main body 11 is connected or abuts against the support component 3000. If the size L1 of the main body 11 is too small, the connection area between the main body 11 and the support component 3000 will be insufficient, and the photovoltaic element 100 will easily detach from the support component 3000 in extreme environments such as strong winds and snow accumulation.

[0056] The size L1 of the main body 11 is larger than the size L2 of the first bending part 12, which can increase the laying area of ​​the battery layer 18 of the main body 11, improve the photoelectric conversion efficiency of the photovoltaic element 100, and also provide a larger contact area between the photovoltaic element 100 and the support component 3000, making the connection more solid and improving the structural stability of the photovoltaic module 1000, which can better resist the influence of external environmental factors such as wind, rain, and snow.

[0057] Please see Figure 2 ,or Figure 4 ,or Figure 5 In some embodiments, the size L1 of the main body portion 11 is larger than the size L3 of the second bent portion 14 in the width direction Y.

[0058] Specifically, in the width direction Y, the size L1 of the main body 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 L3 of the second bending portion 14, and is not limited in this application. If the size L1 of the main body 11 is smaller than the size L3 of the second bending portion 14 in the width direction Y, the battery layer 18 of the main body 11 will be insufficient, reducing the photoelectric conversion efficiency of the photovoltaic element 100. At the same time, when the photovoltaic element 100 is installed on the support component 3000, the main body 11 is connected or abuts against the support component 3000. If the size L1 of the main body 11 is too small, the connection area between the main body 11 and the support component 3000 will be insufficient, and the photovoltaic element 100 will easily detach from the support component 3000 in extreme environments such as strong winds and snow accumulation.

[0059] The size L1 of the main body 11 is larger than the size L3 of the second bending part 14, which can increase the laying area of ​​the battery layer 18 of the main body 11, improve the photoelectric conversion efficiency of the photovoltaic element 100, and also provide a larger contact area between the photovoltaic element 100 and the support component 3000, making the connection more solid and improving the structural stability of the photovoltaic module 1000, which can better resist the influence of external environmental factors such as wind, rain, and snow.

[0060] Please see Figure 4 In some embodiments, the first bend 12 and / or the second bend 14 are provided with an opening 131, which is configured to allow at least a portion of the junction box 30 of the adjacent photovoltaic element 10 to pass through.

[0061] Specifically, the first bend 12 and / or the second bend 14 are provided with openings 131, which are used for the junction box 30 of the photovoltaic element 100 located above the photovoltaic element 100 after overlapping to pass through. There can be one or more openings 131, which is not limited in this application. In one embodiment, the number of openings 131 corresponds to the number of junction boxes 30. In another embodiment, the number of openings 131 may not correspond to the number of junction boxes 30. At least a portion of the junction box 30 can be a partial structure of the junction box 30, or it can be a junction box 30 used to connect cables to the battery layer 18. The openings 131 can be configured to house the junction box 30, and two adjacent photovoltaic elements 100 can share one junction box 30. In this embodiment, the openings 131 of two adjacent photovoltaic elements 100 are aligned, the junction box 30 is installed in the openings 131 of the two adjacent photovoltaic elements 100, and the cables of the junction box 30 are respectively connected to the battery layers 18 of the two photovoltaic elements 100. The opening 131 can also be configured to allow cables to pass through, allowing cables from different junction boxes 30 to connect to other electrical connection devices, including but not limited to other junction boxes 30, battery layers 18, energy storage devices, or loads. The cross-sectional shape of the opening 131 can be square, circular, or elliptical, and is not limited in this application. While allowing at least a portion of the junction box 30 to pass through, the opening 131 maintains a shielding effect on the junction box 30 through the overlapping of the first bend 12 and the second bend 14, preventing rainwater from seeping into the receiving space 300 of the second bend 14 along the opening 131. Furthermore, the periphery of the opening 131 can be further enhanced with a flange or sealing structure to improve dust and water resistance.

[0062] Please see Figure 2 ,or Figure 4 ,or Figure 5In some embodiments, the first bending portion 12 includes a first extension portion 121 and a first bend portion 123. The first extension portion 121 extends from the body portion 11, and the first bend portion 123 bends and extends from the end of the first extension portion 121 away from the body portion 11, forming a receiving space 300 for the first bending portion 12 with the first extension portion 121. The second bending portion 14 includes a second extension portion 141 and a second bend portion 143. The second extension portion 141 extends from the body portion 11, and the second bend portion 143 bends and extends from the end of the second extension portion 141 away from the body portion 11, forming a receiving space 300 for the second bending portion 14 with the second extension portion 141.

[0063] Specifically, a first extension portion 121 and a first bending portion 123 are included. The first extension portion 121 connects the first bending portion 12 and the main body portion 11. The first extension portion 121 extends away from the main body portion 11 in the thickness direction Z. In this application, the first extension portion 121 and the main body portion 11 are integrally formed, and are formed by rolling a portion of the main body portion 11. In other embodiments of this application, the first extension portion 121 may be separately formed from the main body portion 11. The first bending portion 123 extends from the first extension portion 121 in a direction closer to the main body portion 11, thereby bending and forming an accommodating space 300 with the first extension portion 121. In the width direction Y, two adjacent photovoltaic elements 100 are connected by being accommodated in the accommodating space 300 of another photovoltaic panel 10 through the first bending portion 12 or the second bending portion 14 of one photovoltaic panel 10. Specifically, during the installation of photovoltaic panels 10, the first bend 12 or the second bend 14 of one photovoltaic panel 10 is inserted into the receiving space 300 of another photovoltaic panel 10. Since the shapes of the first bend 12 or the second bend 14 and the receiving space 300 are complementary, the first bend 12 or the second bend 14 can be engaged within the receiving space 300, thereby connecting adjacent photovoltaic panels 10 in the width direction Y. This creates a mechanical lock between adjacent photovoltaic panels 10, preventing displacement and loosening of the photovoltaic panels 10 in the width direction Y, enhancing the structural stability of the photovoltaic module 1000. Furthermore, no additional bolts or welding are required; the installer simply aligns the first bend 12 or the second bend 14 of the photovoltaic panel 10 with the receiving space 300 and inserts it to complete the connection, improving the installation efficiency of the photovoltaic module 1000. The second extension sub-part 141 and the second bend sub-part 143 are formed in the same way and will not be described in detail here. It should be noted that the structures of the first extension sub-part 121 and the second extension sub-part 141 can be the same or different, as can the structures of the first bending sub-part 123 and the second bending sub-part 143. That is, with the width midline of the photovoltaic element 100 as the center of symmetry, the first extension sub-part 121 and the second extension sub-part 141 can be symmetrical or asymmetrical. For a single junction box 30 of the same photovoltaic element 100, the junction box 30 can be located at any one of the first extension sub-part 121, the first bending sub-part 123, the second extension sub-part 141, and the second bending sub-part 143. Different junction boxes 30 can be located at one or more of the first extension sub-part 121, the first bending sub-part 123, the second extension sub-part 141, and the second bending sub-part 143.

[0064] Please see Figure 3 or Figure 5In some embodiments, a first angle R1 is formed between the first extension sub-part 121 and the main body part 11, and a second angle R2 is formed between the second bending sub-part 143 and the main body part 11, wherein the first angle R1 is equal to the second angle R2.

[0065] Specifically, a first angle R1 is formed between the first extension sub-part 121 and the main body part 11, and a second angle R2 is formed between the second bending sub-part 143 and the main body part 11. The first angle R1 is equal to the second angle R2. The first angle R1 and the second angle R2 can be chamfers, rounded corners, or other angles. When two photovoltaic panels 10 overlap, if the first angle R1 is not equal to the second angle R2, it will cause misalignment or incomplete contact between the two photovoltaic components 100 after overlapping, affecting the overlap strength of the two photovoltaic components 100. The first angle R1 being equal to the second angle R2 ensures that the two photovoltaic components 100 can make smoother contact during the overlapping process, avoiding misalignment or incomplete contact caused by inconsistent angles, making the contact between the photovoltaic components 1000 tighter, which helps to improve the connection firmness and reduce potential problems caused by loose joints, such as water penetration, thereby improving the overall performance and stability of the photovoltaic module 1000. At the same time, the first angle R1 being equal to the second angle R2 also helps to simplify the production process and improve production efficiency.

[0066] Please see Figure 3 or Figure 5 In some embodiments, the first extension sub-part 121 and the first bending sub-part 123 are planar, and the first angle R1 is the bending angle.

[0067] Specifically, the first extension sub-part 121 and the first bending sub-part 123 are planar. The planar structure is simple, the surface is flat, and it is not easy for dust, debris, or moisture to accumulate. Rainwater can flow more smoothly over the first extension sub-part 121 and the first bending sub-part 123, reducing water accumulation and thus lowering the risk of corrosion and damage caused by water accumulation. It also reduces light scattering and obstruction caused by uneven surfaces. A bending angle refers to the interior or exterior angle formed between two planes. In this application, the first angle R1 is the bending angle, referring to the acute angle formed between the first extension sub-part 121 and the first bending sub-part 123. When subjected to external force, the bending angle can distribute stress more evenly over the plane contact area, avoiding stress concentration. Therefore, when subjected to a force in the width direction Y, the first angle R1, the bending angle, can withstand more stress, preventing adjacent photovoltaic elements 100 from separating and enhancing the connection strength between adjacent photovoltaic elements 100.

[0068] Please see Figure 3 or Figure 5 In some embodiments, the second extension portion 141 and the second bending portion 143 are planar, and the second angle R2 is a bending angle.

[0069] Specifically, the second extension portion 141 and the second bending portion 143 are planar, with a simple planar structure and a smooth surface, making it less prone to accumulating dust, debris, or moisture. Rainwater can flow more smoothly over the second extension portion 141 and the second bending portion 143, reducing water accumulation and thus lowering the risk of corrosion and damage caused by water accumulation. It also reduces light scattering and obstruction caused by uneven surfaces. A bending angle refers to the interior or exterior angle formed between two planes. In this application, the second angle R2 is the bending angle, referring to the acute angle formed between the second extension portion 141 and the second bending portion 143. When subjected to external force, the bending angle can distribute stress more evenly over the planar contact area, avoiding stress concentration. Therefore, when subjected to a force in the width direction Y, the second angle R2, as the bending angle, can withstand more stress, preventing detachment between adjacent photovoltaic elements 100 and enhancing the connection strength between adjacent photovoltaic elements 100.

[0070] Furthermore, the third angle R3 formed between the first extension sub-part 121 and the first bending sub-part 123, and the fourth angle R4 formed between the second extension sub-part 141 and the second bending sub-part 143, can be the same or different. When the third angle R3 and the fourth angle R4 are the same, more contact surfaces are allowed when adjacent photovoltaic elements 100 overlap. That is, when the third angle R3 and the fourth angle R4 are the same, after adjacent photovoltaic elements 100 overlap, the second extension sub-part 141 of one photovoltaic element 100 overlaps with the first bending sub-part 123 of another photovoltaic element 100, and the second bending sub-part 143 of one photovoltaic element 100 overlaps with the first extension sub-part 121 of another photovoltaic element 100. Therefore, the overlap area of ​​adjacent photovoltaic elements 100 is larger, and the connection strength is higher.

[0071] When the third angle R3 and the fourth angle R4 are different, after adjacent photovoltaic modules 100 are overlapped, the second extension sub-section 141 of one photovoltaic module 100 overlaps with the first bending sub-section 123 of another photovoltaic module 100, or the second bending sub-section 143 of one photovoltaic module 100 overlaps with the first extension sub-section 121 of another photovoltaic module 100. Taking the first overlap as an example, the first bending sub-section 123 of one photovoltaic module 100 and the second extension sub-section 141 of another photovoltaic module 100 do not contact each other and have a certain gap. The gap can be used to install other structures of the photovoltaic module 1000. The difference or similarity of the third angle R3 and the fourth angle R4 can adapt to different installation environments, such as roof slopes of different angles or other special-shaped support components 3000, improving the versatility and applicability of the photovoltaic module 1000.

[0072] Please see Figure 2 ,or Figure 4 ,or Figure 5In some embodiments, the photovoltaic panel 10 further includes a connecting portion (not shown), which is provided at least on both sides of the body portion 11 in the longitudinal direction X. In the longitudinal direction X, two adjacent photovoltaic elements 100 are connected by the connecting portion.

[0073] Specifically, when multiple photovoltaic modules 100 are installed, the photovoltaic modules 100 are arranged sequentially along the length direction X and / or the width direction Y to cover the roof. Two adjacent photovoltaic modules 100 along the length direction X are connected by a connecting part. The connecting part can be a structure such as a snap-fit ​​or screw, which can prevent the photovoltaic modules 100 from shifting or loosening in the length direction X, avoid misalignment of the photovoltaic module 1000 due to long-term use or external factors, and improve the stability of the photovoltaic module 1000. There can be one or more connecting parts, which is not limited in this application. For example, a photovoltaic panel 10 in this application includes two connecting parts. The connecting part is at least provided in the body part 11. In other embodiments of this application, the connecting part can also be provided in one or more of the first bending part 12, the second bending part 14, and the body part 11. For example, the connecting part can be provided on the body part 11 and the first bending part 12. The connecting part is connected to the two opposite sides of the body part 11 in the length direction X. As a result, the overall size of the connecting part is relatively long. When two adjacent photovoltaic elements 100 are connected by the connecting part, the connecting part 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 length direction X.

[0074] 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 bent portion, a body portion, and a second bent portion. In the width direction, the first bent portion, the body portion, and the second bent portion are connected in sequence. The first bent portion and the second bent portion are bent relative to the body portion and respectively form an accommodating space. and A junction box is electrically connected to the photovoltaic panel, and the junction box is disposed within the accommodating space of the first bend and / or the accommodating space of the second bend.

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 first bend and / or the second bend. The main body is provided with a battery layer.

3. The photovoltaic device according to claim 1, characterized in that, In the width direction, the size of the body portion is not less than the size of the first bent portion and / or the second bent portion.

4. The photovoltaic device according to claim 1, characterized in that, The first bend and / or the second bend are provided with openings, which are configured to allow at least a portion of the junction box of the adjacent photovoltaic element to pass through.

5. The photovoltaic device according to claim 1, characterized in that, The first bending portion includes a first extension sub-portion and a first bend portion. The first extension sub-portion extends from the body portion, and the first bend portion bends and extends from the end of the first extension sub-portion away from the body portion, forming an accommodating space for the first bending portion with the first extension sub-portion; and, The second bending portion includes a second extension sub-portion and a second bending portion. The second extension sub-portion extends from the main body portion, and the second bending portion bends and extends from the end of the second extension sub-portion away from the main body portion, forming an accommodating space for the second bending portion together with the second extension sub-portion.

6. The photovoltaic device according to claim 5, characterized in that, A first angle is formed between the first extension sub-part and the main body part, and a second angle is formed between the second bending sub-part and the main body part, wherein the first angle is equal to the second angle.

7. The photovoltaic device according to claim 6, characterized in that, The first extension sub-part and the first bending sub-part are planar, and the first angle is the bending angle; and / or, The second extension sub-part and the second bending sub-part are planar, and the second angle is the bending angle.

8. A photovoltaic module, characterized in that, It includes at least two photovoltaic modules as described in any one of claims 1-7, wherein at least two of the photovoltaic elements are sequentially overlapped in the width direction, and in the width direction, among two adjacent photovoltaic panels, A first bend in one photovoltaic panel overlaps a second bend in another photovoltaic panel; or, The second bend of one of the photovoltaic panels overlaps the first bend 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 two opposite sides of the main body in the length direction. In the length direction, two adjacent photovoltaic elements are connected by the connecting portion, and the length direction is perpendicular to the width direction.

10. A photovoltaic system, characterized in that, include: Support components; The photovoltaic module according to any one of claims 8 or 9, wherein the photovoltaic module is mounted on the support component.

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