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 length direction, the first bending part is bent relative to the first body part to form a first containing space, and the second bending part is bent relative to the second body part to form a second containing space. The second bending part is bent relative to the second body part to form a second accommodating space. The junction box is electrically connected with the photovoltaic panel and comprises a first split body and a second split body, the first split body is arranged in the first containing space, and the second split body is arranged in the second containing space. The first accommodating space and the second accommodating space are the space occupied by the structure of the photovoltaic panel, and the junction box does not need to occupy extra space. The first split body and the second split body are connected to different areas of the photovoltaic panel, so that the mutual connection distance between the circuit of the photovoltaic panel and the circuits of the first split body and the second split body is shortened, and the use amount of cables is reduced.

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. Along its length, 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 to form a first accommodating space, and the second bent portion is bent relative to the second body portion to form a second accommodating space. The junction box is electrically connected to the photovoltaic panel and includes a first split portion and a second split portion. The first split portion is disposed within the first accommodating space, and the second split portion is disposed within the second accommodating space.

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

[0006] In some embodiments, in the length direction, the size of the first body portion is larger than the size of the second body portion; and / or, in the width direction, the size of the second body portion is not smaller than the size of the first body portion, the width direction being perpendicular to the length direction.

[0007] In some embodiments, in the thickness direction, the light-facing surface of the second body portion is higher than the light-facing surface of the first body portion, and the thickness direction is perpendicular to the length direction.

[0008] 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.

[0009] In some embodiments, the second body portion has an opening configured to allow the first split portion to pass through.

[0010] In some embodiments, the opening is spaced apart from the second split.

[0011] This application also provides a photovoltaic module. The photovoltaic module includes at least two photovoltaic elements as described in any one of the embodiments. The at least two photovoltaic elements are sequentially overlapped along the length direction. In the length direction, among 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.

[0012] In some embodiments, a first segment of one of the photovoltaic panels is at least partially spaced from a second body portion of another photovoltaic panel, and a first segment of one of the photovoltaic panels is connected to a second segment of another photovoltaic panel.

[0013] In some embodiments, a first segment of one of the photovoltaic panels passes through an opening in another of the photovoltaic panels and is connected to a second segment of the other of the photovoltaic panels.

[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 disclosed in this application involve a first bend and a first body portion of one photovoltaic panel overlapping the second bend and a second body portion of another photovoltaic panel along their length. This allows for the connection of multiple photovoltaic panels along their length using the panel's own structure without the need for additional connectors, thereby improving installation efficiency. A first separate component is located within a first accommodating space formed by the first body portion and the first bend, and a second separate component is located within a second accommodating space formed by the second body portion and the second bend. Both spaces provide partial protection for the junction box, allowing the photovoltaic panels to shield it from sunlight and rain, preventing overheating or short circuits caused by rain, thus extending its lifespan. Since the first and second accommodating spaces are occupied by the photovoltaic panel's own structure, the junction box does not require additional space, optimizing the photovoltaic component layout. Furthermore, the junction box is divided into a first split and a second split. Compared to an integrated junction box, the first and second splits are smaller in size, resulting in a smaller connection area on the photovoltaic panel. This increases the solar panel's illumination area and improves photovoltaic conversion efficiency. The first and second splits connect to different areas of the photovoltaic panel (i.e., the first and second accommodating spaces), shortening the distance between the photovoltaic panel's circuitry and the circuitry of the first and second splits during installation. This not only disperses current, reduces cable usage and cable loss, but also reduces power generation loss due to cable length, lowers resistance, and improves the photovoltaic panel's output efficiency. Finally, the first and second splits generate less heat compared to an integrated junction box, improving the heat dissipation of the photovoltaic components.

[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 the photovoltaic modules in the photovoltaic system shown;

[0020] Figure 3 for Figure 2 A three-dimensional schematic diagram of the photovoltaic components in the photovoltaic module shown;

[0021] Figure 4 This is a perspective view of a photovoltaic system according to other embodiments of this application;

[0022] Figure 5 for Figure 4 A three-dimensional schematic diagram of the photovoltaic modules in the photovoltaic system shown;

[0023] Figure 6 for Figure 5 A three-dimensional schematic diagram of the photovoltaic components in the photovoltaic module shown.

[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 part 11; first bending part 12; second body part 13; opening 131; second bending part 14; light-facing surface 101; backlighting surface 103; battery layer 18; junction box 30; first split part 31; second split part 32; first accommodating space 301; second accommodating space 302. 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 Figure 1 or Figure 4The 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 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.

[0036] 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.

[0037] 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 of the photovoltaic element 100 refers to the thickness direction of the first body portion 11 of the photovoltaic element 100 described below.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] Please see Figures 1 to 3 ,or Figures 4 to 6 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 the length 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 to form a first accommodating space 301, and the second bending portion 14 is bent relative to the second body portion 13 to form a second accommodating space 302. The junction box 30 is electrically connected to the photovoltaic panel 10 and includes a first split body 31 and a second split body 32. The first split body 31 is disposed within the first accommodating space 301, and the second split body 32 is disposed within the second accommodating space 302.

[0042] 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.

[0043] 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 for explanation. 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 to form a first accommodating space 301. At least a portion (the first split 31) of the junction box 30 is accommodated in the first accommodating space 301 and installed on the first body portion 11. The junction box 30 is installed on the first body portion 11, which can shorten the power transmission distance and improve the efficiency of energy transmission.

[0044] The first bending portion 12 is connected to one end of the first body portion 11 in the length direction X. The direction and angle of the bend can be adjusted according to actual design requirements. For example, the bend in this application extends in the thickness direction Z away from the first body portion 11, with a bending angle of ninety degrees. There is a certain height difference and spatial gap 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. The photovoltaic panel 10 absorbs heat under sunlight, causing its temperature to rise. The gap can serve as a heat dissipation channel, dissipating some of the heat from the photovoltaic panel 10. In some embodiments, the cross-sectional shape of the first bending portion 12 cut by the XZ plane includes, but is not limited to, square, trapezoidal, semi-circular, and U-shaped shapes.

[0045] 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.

[0046] 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 a second accommodating space 302. At least a portion (the second split 32) of the junction box 30 is accommodated in the second accommodating space 302 and mounted on the second body portion 13. Mounting at least a portion of the junction box 30 on the second body portion 13 shortens the power transmission distance and improves the efficiency of power transmission. The second bending portion 14 is connected to the first body portion 11 at one end in the length direction X and to the second body portion 13 at the other end in the length direction X, thereby creating a certain height difference between the first body portion 11 and the second body portion 13. The first bending portion 12 is connected to either end of the first body portion 11 and bends relative to the first body portion 11.

[0047] 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. Junction box 30 includes integrated junction box 30 and split junction box 30; the junction box 30 in this application is a split junction box 30. A split junction box 30 is composed of multiple split junction boxes 30, which can be two-part, three-part, or other forms. The junction box 30 in this application is a two-part junction box 30. The junction box 30 includes two split junction boxes 30, namely a first split 31 and a second split 32. Each split junction box 30 contains a diode, and positive and negative cables are distributed on different split junction boxes 30. The connection between the split junction box 30 and the photovoltaic panel 10 is achieved through internal busbars. Each split junction box 30 (first split 31 and / or second split 32) is connected to different areas of the photovoltaic panel 10, thereby distributing the current, reducing resistance, and improving the output efficiency of the photovoltaic panel 10. In the connection with other photovoltaic panels 10, the positive and negative junction boxes 30 (first split 31 and second split 32) of the split junction box 30 are respectively installed on both sides of the photovoltaic panel 10 in any direction, and are connected in series or parallel with other photovoltaic panels 10 through electrical connection components (e.g., cables). This greatly shortens the mutual distance of the circuit connection between the battery layers 18 in the photovoltaic panel 10 during installation, which not only reduces the amount of cable used and losses, but also reduces the power generation loss caused by the cable length, and improves the power of the photovoltaic module 1000.

[0048] In one installation method, the first accommodating space 301 and the second accommodating space 302 are configured to accommodate the first split 31 and the second split 32, respectively. 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 length direction X, in two adjacent photovoltaic panels 10 in the length direction X, the first bend 12 and the first body portion 11 of the upper photovoltaic panel 10 overlap the second bend 14 and the second body portion 13 of the lower photovoltaic panel 10, respectively. This allows for the connection of multiple photovoltaic panels 10 in the length direction X without the use of other connectors, enabling the installation of photovoltaic panels 10 even in roof structures without purlins. The direction and angle of the bend of the second bend 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 explanation.

[0049] In this application, in two adjacent photovoltaic panels 10 along the length 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, respectively. This allows multiple photovoltaic panels 10 to be connected along the length direction X using the structure of the photovoltaic panel 10 itself without the use of other connectors, thereby improving the installation efficiency of the photovoltaic panels 10. The first component 31 is located within the first accommodating space 301 formed by the first main body 11 and the first bending portion 12, and the second component 32 is located within the second accommodating space 302 formed by the second main body 13 and the second bending portion 14. The first accommodating space 301 and the second accommodating space 302 provide partial protection for the junction box 30. The photovoltaic panel 10 can shield the junction box 30 from sunlight and rain, preventing the junction box 30 from overheating due to sunlight exposure or short circuits caused by rain, thereby improving the lifespan of the junction box 30. The first accommodating space 301 and the second accommodating space 302 are the spaces occupied by the photovoltaic panel 10 itself, and the junction box 30 does not need to occupy additional space, which can optimize the layout of the photovoltaic components 100. In addition, the junction box 30 is divided into the first component 31 and the second component 32. The first component 31 and the second component 32 are smaller in size than the integrated junction box 30, making the connection area of ​​the first component 31 and the second component 32 on the photovoltaic panel 10 very small, increasing the light-receiving area of ​​the photovoltaic panel 10 and improving the photovoltaic conversion efficiency. The first component 31 and the second component 32 are connected to different areas of the photovoltaic panel 10 (i.e., the first accommodating space 301 and the second accommodating space 302), shortening the distance between the circuits of the photovoltaic panel 10 and the circuits of the first component 31 and the second component 32 during installation. This not only disperses the current, reduces the amount of cable used, and lowers cable losses, but also reduces the power generation loss caused by cable length, lowers resistance, and improves the output efficiency of the photovoltaic panel 10. Finally, the first component 31 and the second component 32 generate less heat than the integrated junction box 30, thus improving the heat dissipation effect of the photovoltaic component 100.

[0050] Please see Figure 3 or Figure 6 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.

[0051] 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 lower and upper photovoltaic panels 10 at least partially overlap in their projection planes perpendicular to the thickness 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 load through the external electrical connector.

[0052] Please see Figure 3 or Figure 6 In some embodiments, the size L1 of the first body portion is larger than the size L2 of the second body portion in the length direction X.

[0053] 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 length 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 longitudinal direction X, the dimension L1 of the first body portion 11 is larger than the dimension 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 dimension also ensures a more stable connection between the photovoltaic panels 10. Furthermore, the larger dimension L1 of the first body portion 11 can accommodate more battery layers 18, increasing the power output of the photovoltaic panel 10.

[0054] Please see Figure 3 or Figure 6In some embodiments, the size L3 of the second body portion 13 in the width direction Y is not less than the size L4 of the first body portion 11.

[0055] Specifically, in the width 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 L4 of the first body portion 11, and is not limited in this application. When multiple photovoltaic elements 100 are arranged sequentially in the width 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 width 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.

[0056] Please see Figure 3 or Figure 6 In some embodiments, in the thickness direction Z, 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.

[0057] 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 length 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 length 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.

[0058] Please see Figure 3 or Figure 6 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.

[0059] 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.

[0060] 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.

[0061] Please see Figures 4 to 6 Furthermore, in another embodiment of the photovoltaic component 100, the second body portion 13 is provided with an opening 131, which is configured to allow the first split 31 to pass through.

[0062] Specifically, the second body portion 13 is provided with an opening 131, which allows the first split 31 of the photovoltaic element 100, located above the photovoltaic element 100 after overlapping, to pass through. The opening 131 can be one or multiple, and is not limited in this application. In one embodiment, the number of openings 131 corresponds to the number of first splits 31. In another embodiment, the number of openings 131 may not correspond to the number of first splits 31; a non-correspondence means that one opening 131 can accommodate multiple first splits 31. The cross-sectional shape of the opening 131 in the XY plane can be square, circular, or elliptical, etc., and is not limited in this application. The size-adaptive design of the opening 131 to the first split 31 allows the first split 31 to pass through while maintaining a shielding effect on the first split 31 through the overlapping of the second bending portion 14 and the second body portion 13, effectively preventing rainwater from seeping into the second accommodating space 302 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.

[0063] Please see Figures 4 to 6 In some embodiments, the opening 131 is spaced apart from the second part 32.

[0064] Specifically, the opening 131 is spaced apart from the second split 32, that is, there is a certain distance between the opening 131 and the second split 32. For example, the opening 131 and the second split 32 of this application are spaced apart in the width direction Y. Since the opening 131 is used for the first split 31 of the photovoltaic element 100 located above to pass through, the spacing between the opening 131 and the second split 32 can prevent the first split 31 of the photovoltaic element 100 located above from interfering with the second split 32 after passing through the opening 131.

[0065] Please see Figures 1 to 3 ,or Figures 4 to 6This application also provides a photovoltaic module 1000. The photovoltaic module 1000 includes at least two photovoltaic elements 100 according to any one of the embodiments. The at least two photovoltaic elements 100 are sequentially overlapped in the length direction X. In the length direction X, among two adjacent photovoltaic panels 10, the first bent portion 12 and the first body portion 11 of one photovoltaic panel 10 overlap with the second bent portion 14 and the second body portion 13 of the other photovoltaic panel 10, respectively. The first bent portion 12 and the first body portion 11 of one photovoltaic panel 10 overlap with the second bent 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 length direction X using the structure of the photovoltaic panels 10 themselves without the use of other connecting members, thus improving the installation efficiency of the photovoltaic panels 10.

[0066] Please see Figures 1 to 3 In some embodiments, the photovoltaic element 100 in the photovoltaic module 1000 does not have an opening 131, the first part 31 of one photovoltaic panel 10 is at least partially spaced from the second body part 13 of another photovoltaic panel 10, and the first part 31 of one photovoltaic panel 10 is connected to the second part 32 of another photovoltaic panel 10.

[0067] More specifically, in some embodiments of the photovoltaic module 1000 where the photovoltaic element 100 does not have an opening 131, at least two photovoltaic elements 100 in the photovoltaic module 1000 are sequentially overlapped in the length direction X. Among two adjacent photovoltaic panels 10, the first bent portion 12 and the first body portion 11 of the upper photovoltaic panel 10 overlap the second bent portion 14 and the second body portion 13 of the lower photovoltaic panel 10, respectively. The first split portion 31 of the upper photovoltaic panel 10 is at least partially spaced from the second body portion 13 of the lower photovoltaic panel 10, and the first split portion 31 of the upper photovoltaic panel 10 is connected to the second split portion 32 of the lower photovoltaic panel 10. The first part 31 of the upper photovoltaic panel 10 is directly connected to the input terminal of the second part 32 of the lower photovoltaic panel 10 through its output terminal, while the other parts of the first part 31 are kept at a certain distance from the second body 13 of the lower photovoltaic panel 10, thereby preventing potential mechanical interference or electrical safety hazards, thus optimizing the connection path between the first part 31 and the second part 32, reducing cable length, and reducing resistance loss.

[0068] Please see Figures 4 to 6 In some embodiments, the photovoltaic element 100 in the photovoltaic module 1000 is provided with an opening 131, and a first part 31 of one of the photovoltaic panels 10 passes through the opening 131 of another photovoltaic panel 10 and is connected to a second part 32 of another photovoltaic panel 10.

[0069] More specifically, in some embodiments of the photovoltaic module 1000 where the photovoltaic element 100 has an opening 131, the first segment 31 of the upper photovoltaic panel 10 passes through the opening 131 of the lower photovoltaic panel 10 and connects with the second segment 32 of the lower photovoltaic panel 10. The overlapping relationship of two adjacent photovoltaic panels 10 in the length direction X is as described above and will not be repeated. When the photovoltaic element 100 has an opening 131, the first segment 31 of the upper photovoltaic panel 10 extends through the opening 131 of the lower photovoltaic panel 10 to the backlight surface 103 of the lower photovoltaic panel 10 and is plugged into the second segment 32 of the lower photovoltaic panel 10. The opening 131 ensures that the first segment 31 can pass through smoothly, while the overlapping of the second bend 14 and the second body 13 can still effectively shield the first segment 31, preventing rainwater from seeping into the accommodating space. In addition, the periphery of the opening 131 is further enhanced with a flange or sealing structure to improve dust and water resistance. This makes the connection between the first component 31 and the second component 32 more direct and compact, further reducing the length of the cable used, and lowering the installation complexity and cost.

[0070] Please see Figure 3 or Figure 6 In some embodiments, the photovoltaic panel 10 further includes a connecting portion (not shown), which is provided at least on both sides of the first body portion 11 in the width direction Y. In the width direction Y, two adjacent photovoltaic elements 100 are connected by the connecting portion.

[0071] 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 width direction Y are connected by a connecting part. This prevents the photovoltaic modules 100 from shifting and loosening in the width 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. 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 first body part. 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 second body part 13. For example, the connecting portion of this application is provided on the first body portion 11 and the first bending portion 12. The connecting portion connects the two opposite sides of the first body portion 11 in the width direction Y and the two opposite sides of the first bending portion 12 in the width direction Y. As a result, the overall size of the connecting portion is relatively long. When two adjacent photovoltaic elements 100 are connected by the connecting portion, the connecting portion 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 width direction Y.

[0072] 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 first body portion, a second bent portion, and a second body portion. In the length direction, the first bent portion, the first body portion, the second bent portion, and the second body portion are connected in sequence. The first bent portion is bent relative to the first body portion to form a first accommodating space, and the second bent portion is bent relative to the second body portion to form a second accommodating space. and The junction box, which is electrically connected to the photovoltaic panel, includes a first part and a second part, wherein the first part is disposed within the first accommodating space and the second part is disposed within the second 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 first split part is installed on the back-facing side of the first main body, and the second split part is installed on the back-facing side of the second main body. The first main body has a battery layer inside.

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

4. The photovoltaic element according to claim 2, characterized in that, In the thickness direction, the light-facing surface of the second body part is higher than the light-facing surface of the first body part, and the thickness direction is perpendicular to the length 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 any one of claims 1-5, characterized in that, The second body portion has an opening, which is configured to allow the first split portion to pass through.

7. The photovoltaic device according to claim 6, characterized in that, The opening is spaced apart from the second split part.

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

9. The photovoltaic module according to claim 8, characterized in that, A first segment of one of the photovoltaic panels is at least partially spaced from a second body portion of another photovoltaic panel, and a first segment of one of the photovoltaic panels is connected to a second segment of another photovoltaic panel; or, A first segment of one of the photovoltaic panels passes through an opening in another photovoltaic panel and is connected to a second segment of the other photovoltaic panel.

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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