Photovoltaic module and photovoltaic system

Abstract

The utility model provides a photovoltaic module and a photovoltaic system. The photovoltaic assembly comprises at least two photovoltaic pieces, and the at least two photovoltaic pieces are sequentially connected in a lap joint mode in the first direction. The photovoltaic piece comprises a photovoltaic panel and a junction box. The photovoltaic panel comprises a body part and a bending part, and the bending part is connected to any end of the body part and is bent relative to the body part. And the junction box is electrically connected with the photovoltaic panel. In the first direction, in every two adjacent photovoltaic panels, the bending part of one photovoltaic panel is in lap joint with the body part of the other photovoltaic panel to form a containing space, the containing space is configured to contain a junction box of at least one of the two adjacent photovoltaic panels, and the containing space can provide partial protection for the junction box, so that the junction box is not damaged. After lap joint, the photovoltaic piece located on the upper portion can shield sunlight and flowing water for the junction box, the service life of the junction box is prolonged, after lap joint, the body portion of the photovoltaic piece located on the lower portion can shield the junction box, a user cannot see the junction box under the condition that the user raises the head, and the visual attractiveness of the photovoltaic system is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of photovoltaic technology, in particular to a photovoltaic module and a photovoltaic system. BACKGROUND

[0002] The photovoltaic system is a photovoltaic product capable of generating electricity by using solar energy, and also serving as sunshade, heat insulation and rain blocking. It can be applied to the outer periphery of outdoor public and large commercial facilities or the courtyard of private residences. The junction box is used to collect the electric energy generated by the photovoltaic panel and transmit the electric energy to external equipment through wires. In the prior art, the junction box is usually directly installed on the back or side of the photovoltaic panel, which is in a relatively exposed position, so that the junction box is easily affected by external environmental factors, such as high temperature caused by direct sunlight and short circuit caused by rainwater contact, thereby reducing the service life and reliability of the junction box and affecting the overall aesthetics of the photovoltaic system. SUMMARY

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

[0004] The photovoltaic module provided by the embodiments of the present application comprises at least two photovoltaic components, and the at least two photovoltaic components are sequentially overlapped in a first direction. The photovoltaic component comprises a photovoltaic panel and a junction box. The photovoltaic panel comprises a body portion and a bent portion, the bent portion is connected to any one end of the body portion and is bent relative to the body portion. The junction box is electrically connected to the photovoltaic panel. In the first direction, the bent portion of one photovoltaic panel is overlapped with the body portion of another photovoltaic panel to form an accommodation space, and the accommodation space is configured to accommodate the junction box of at least one of the two adjacent photovoltaic panels.

[0005] In some embodiments, the photovoltaic panel comprises a light-receiving surface and a back surface opposite to each other, and at least part of the light-receiving surface of the lower photovoltaic panel and at least part of the back surface of the upper photovoltaic panel jointly form the accommodation space when the two adjacent photovoltaic panels are overlapped.

[0006] In some embodiments, the photovoltaic panel has a mounting area and a power generation area, the power generation area is located between the bent portion and the mounting area, and the photovoltaic panel is provided with a cell layer, and the cell layer is arranged in the power generation area. The junction box is arranged in the mounting area of the photovoltaic panel; or the junction box is arranged on the back surface of the photovoltaic panel.

[0007] In some embodiments, the photovoltaic panel further comprises a connecting portion, and the connecting portion is arranged on at least two opposite sides of the body portion in a second direction, and in the second direction, the two adjacent photovoltaic components are connected through the connecting portion, and the first direction is perpendicular to the second direction.

[0008] In some embodiments, the connecting part comprises an extending subpart and a hooking subpart, the extending subpart extends from the body part, the hooking subpart is bent from an end of the extending subpart away from the body part and forms a hooking space with the extending subpart, in the second direction, the hooking subpart of one of the adjacent photovoltaic panels is accommodated in the hooking space of the other of the adjacent photovoltaic panels.

[0009] In some embodiments, in the second direction, the size of the mounting area is greater than the size of the power generation area.

[0010] In some embodiments, in a third direction, the light-receiving surface of the mounting area is lower than the light-receiving surface of the power generation area, and the height of the bent part relative to the light-receiving surface of the body part is not less than the height difference between the light-receiving surface of the mounting area and the light-receiving surface of the power generation area, the third direction being perpendicular to the first direction and the second direction.

[0011] In some embodiments, the mounting area is provided with a groove configured to accommodate at least part of the bent part.

[0012] In some embodiments, in the second direction, the depth of the groove decreases towards the side of the body part that is lower in the second direction.

[0013] The present application also provides a photovoltaic system comprising a support assembly and the photovoltaic assembly of any one of the above embodiments. The photovoltaic assembly is installed on the support assembly.

[0014] In the photovoltaic assembly and the photovoltaic system of the present application, the junction box is located in the accommodation space formed by the overlapping of the adjacent two photovoltaic panels, the accommodation space can provide partial protection for the junction box, the photovoltaic panel located above after overlapping can shield the junction box from sunlight and running water, avoiding the junction box from being irradiated by sunlight to cause the temperature to be too high, or being in contact with rainwater to cause short circuit, thereby improving the service life of the junction box, and the body part of the photovoltaic panel located below after overlapping can shield the junction box, so that the user cannot see the junction box in the case of looking up, thereby improving the visual aesthetics of the photovoltaic system.

[0015] The above description is only a summary of the technical solutions of the present application, in order to more clearly understand the technical means of the present application, the specific embodiments of the present application can be implemented in accordance with the content of the description, and in order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0016] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments with reference made to the accompanying drawings. The drawings are for purposes of illustration only and are not intended to be limiting in

[0017] Figure 1 A perspective view of a photovoltaic system according to some embodiments of the present application, from one perspective;

[0018] Figure 2 A perspective view of a photovoltaic system according to some embodiments of the present application, from another perspective;

[0019] Figure 3 A perspective view of a photovoltaic system according to some embodiments of the present application, from another perspective; Figure 1 A structural view of a photovoltaic component in the photovoltaic system shown;

[0020] Figure 4 A structural view of a photovoltaic assembly in the photovoltaic system shown. Figure 1 A structural view of a photovoltaic assembly in the photovoltaic system shown.

[0021] Reference signs in the detailed description of the embodiments are as follows:

[0022] Photovoltaic system 10000; photovoltaic assembly 1000; support assembly 3000;

[0023] Photovoltaic component 100; photovoltaic panel 10; body portion 11; bent portion 12; connecting portion 15; extension sub-portion 151; hook sub-portion 153; engagement space 155; light-receiving surface 101; light-reflecting surface 103; mounting region 16; power generation region 17; cell layer 18; recess 19; junction box 30; accommodation space 300. DETAILED DESCRIPTION

[0024] The embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0025] 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 belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application; the terms "comprising" and "having," and any variations thereof, as used in the specification and claims and the aforementioned drawings, are intended to cover not exclusive inclusions.

[0026] In the description of the embodiments of the present application, the technical terms "first", "second", and the like are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise explicitly specified and limited.

[0027] Reference herein to "embodiments" means that the particular features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily a separate or alternative embodiment to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0028] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which means that there are three cases of A alone, simultaneously existing bearing arm, connecting arm and wire storage groove, and B alone. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after it.

[0029] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two), and similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0030] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "liquid level", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application.

[0031] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connection", "connection", "fixing", and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements.

[0032] Please refer to Figures 1-2The photovoltaic system 10000 is a photovoltaic product capable of generating electricity by using solar energy, and simultaneously serving as a sunshade, heat insulator, and rain blocker. The photovoltaic system 10000 can be applied to an outdoor public area, a periphery of a large commercial facility, or a private residence. For example, the photovoltaic system 10000 can be installed on a roof. The photovoltaic system 10000 is described herein as an example of a photovoltaic system installed on a roof. The photovoltaic system 10000 includes a support assembly 3000 and a photovoltaic assembly 1000 installed on the support assembly 3000.

[0033] The support assembly 3000 is a structure capable of providing installation and support for the photovoltaic assembly 1000 in the photovoltaic system 10000. The support assembly 3000 can be made of a metal material and / or a non-metal material. The metal material includes, but is not limited to, aluminum, iron, steel, or an aluminum alloy. The non-metal material includes, but is not limited to, plastic. For example, the support assembly 3000 can be made of a metal material, such as an aluminum alloy. In this way, the structural strength of the support assembly 3000 can be improved, the ability of the photovoltaic system 10000 to withstand external environments (e.g., wind, rain, snow, etc.) can be enhanced, and the stability and reliability of the photovoltaic system 10000 can be ensured. It should be noted that, in some embodiments, the overall shape of the support assembly 3000 can include, but is not limited to, a square, a cylinder, and a rhombus. In this way, the support assembly 3000 can be adapted to install photovoltaic assemblies 1000 of different sizes and shapes. For example, the support assembly 3000 can be a purlin of a roof, and the photovoltaic assembly 1000 can be directly or indirectly installed on the support assembly 3000 via a mounting member.

[0034] The photovoltaic assembly 1000 includes a photovoltaic member 100, which is a solar energy conversion device capable of converting solar energy into electrical energy. The photovoltaic member 100 can be a single-crystal silicon, a polycrystalline silicon, or a thin-film solar cell. The user can select a photovoltaic member 100 of different efficiencies and sizes according to the use requirements and the support assembly 3000. In this application, the length direction of the photovoltaic member 100 is the first direction X, the width direction of the photovoltaic member 100 is the second direction Y, and the thickness direction of the photovoltaic member 100 is the third direction Z. It should be noted that the thickness direction of the photovoltaic member 100 is the thickness direction of the body portion 11 of the photovoltaic member 100 described below.

[0035] The photovoltaic assembly 1000 is arranged on the support assembly 3000, which can absorb sunlight and convert solar energy into electric energy for power generation, and cover the support assembly 3000 to reduce sunlight from shining into the photovoltaic system 10000 and achieve a sun-shading effect. The interior of the photovoltaic system 10000 refers to the space below the photovoltaic assembly 1000 and surrounded by the support assembly 3000. In some embodiments, the photovoltaic assembly 1000 can be detachably connected to the support assembly 3000, so that the photovoltaic assembly 1000 can be easily detached from the support assembly 3000 when maintenance or replacement is needed. The detachable connection includes, but is not limited to, bolt connection and buckle connection, etc. In other embodiments, the photovoltaic assembly 1000 can be non-detachably connected to the support assembly 3000, so as to improve the bonding strength between the photovoltaic assembly 1000 and the support assembly 3000, improve the ability of the photovoltaic system 10000 to resist external environmental factors, and ensure the stability and reliability of the photovoltaic system 10000. The non-detachable connection includes, but is not limited to, bonding or welding, etc.

[0036] Please refer to Figures 1-3 The photovoltaic assembly 1000 provided by the embodiments of the present application includes at least two photovoltaic components 100, and the at least two photovoltaic components 100 are sequentially overlapped in the first direction X. The photovoltaic component 100 includes a photovoltaic panel 10 and a junction box 30. The photovoltaic panel 10 includes a body portion 11 and a bent portion 12, the bent portion 12 is connected to any one end of the body portion 11 and is bent relative to the body portion 11. The junction box 30 is electrically connected with the photovoltaic panel 10. Among the two adjacent photovoltaic panels 10 in the first direction X, the bent portion 12 of one photovoltaic panel 10 is overlapped on the body portion 11 of the other photovoltaic panel 10 to form a containing space 300, and the containing space 300 is configured to contain the junction box 30 of at least one of the two adjacent photovoltaic panels 10.

[0037] Specifically, the photovoltaic panel 10 is an element in the photovoltaic component 100 that converts solar energy into electric energy, and the conversion process can be direct conversion or indirect conversion. Direct conversion means that the photovoltaic panel 10 can directly convert solar energy into electric energy, and indirect conversion means that the photovoltaic panel 10 can convert solar energy into chemical energy or other forms of energy and then convert it into electric energy. In the case of multiple photovoltaic components 100, the photovoltaic components 100 are arranged in sequence along the first direction X and / or the second direction Y to cover the roof. Among them, the photovoltaic components 100 arranged along the first direction X are sequentially overlapped. Overlapping means that the two adjacent photovoltaic components 100 in the first direction X have a partial overlap in the first direction X, which can ensure the stability and continuity of the photovoltaic assembly 1000 in the overall structure, prevent gaps or misalignment between the photovoltaic components 100 caused by external factors such as wind and vibration, and thus improve the installation stability of the photovoltaic assembly 1000 in the first direction X.

[0038] The body portion 11 is used to convert solar energy into electric energy. The cross-sectional shape of the body portion 11 in the XY plane can include, but is not limited to, regular shapes such as square, circle, triangle, diamond, and irregular shapes. In the embodiments of the present application, only the cross-sectional shape of the photovoltaic panel 10 is taken as an example of square. The joint in the body portion 11 can transmit the converted electric energy to the junction box 30, and the junction box 30 can transmit the electric energy to external equipment, which can be an energy storage device capable of storing electric energy. The bending portion 12 is connected to any end of the body portion 11 and bends relative to the body portion 11. The bending portion 12 is connected to the end of the body portion 11 near the power generation area 17 of the body portion 11 in the first direction X, and the direction and angle of the bending can be adjusted according to actual design requirements. Exemplarily, the bending of the present application extends in the third direction Z in the direction away from the body portion 11, and the bending angle is ninety degrees. When the bending portion 12 of one photovoltaic panel 10 is lapped on the body portion 11 of another photovoltaic panel 10, due to the height difference and space interval between the bending portion 12 and the body portion 11, a relatively closed or semi-closed accommodation space 300 is formed.

[0039] In some embodiments, the body portion 11 and the bending portion 12 are an integral structure, that is, the body portion 11 and the bending portion 12 are an integral structure, thereby improving the bonding strength between the body portion 11 and the bending portion 12, preventing the body portion 11 and the bending portion 12 from separating during the operation of the photovoltaic panel 10, thereby ensuring the stability and reliability of the photovoltaic panel 10. In other embodiments, the body portion 11 and the bending portion 12 are separate structures, that is, the body portion 11 and the bending portion 12 are two different structures. In one example, the body portion 11 and the bending portion 12 can be combined together by a detachable connection mode, which includes but is not limited to a buckle connection or a threaded connection. In another example, the body portion 11 and the bending portion 12 can be combined together by a non-detachable connection mode, which includes but is not limited to bonding or welding.

[0040] The junction box 30 is used to collect and transmit the electrical energy generated by the photovoltaic panel 10. The junction box 30 is provided with wires, terminals, etc. The junction box 30 can be connected to the cell layer 18 of the photovoltaic panel 10. In the photovoltaic assembly 1000, the junction boxes 30 of different photovoltaic panels 10 can be connected in series or in parallel through electrical connections. In the present application, each photovoltaic component 100 includes at least one junction box 30. The accommodation space 300 is configured to accommodate the junction box 30 of at least one of the two adjacent photovoltaic panels 10, i.e. in the first direction X, the accommodation space 300 formed by the two adjacent photovoltaic components 100 can accommodate the junction box 30 of the lower photovoltaic component 100, can accommodate the junction box 30 of the upper photovoltaic component 100, or can accommodate both junction boxes 30. The present application illustrates the accommodation space 300 accommodating the junction box 30 of the lower photovoltaic component 100.

[0041] The junction box 30 of the present application is located in the accommodation space 300 formed by the overlapping of the two adjacent photovoltaic panels 10. The accommodation space 300 can provide partial protection for the junction box 30. After overlapping, the upper photovoltaic component 100 can shield the junction box 30 from sunlight and running water, so as to prevent the junction box 30 from being irradiated by sunlight and causing the temperature to be too high, or from being in contact with rainwater and causing short circuit, thereby improving the service life of the junction box 30. After overlapping, the lower photovoltaic component 100 can shield the junction box 30 with the body part 11, so that the user cannot see the junction box 30 when looking up, thereby improving the visual aesthetics of the photovoltaic system 10000.

[0042] Please refer to Figures 2-3 In some embodiments, the photovoltaic panel 10 includes a light-receiving surface 101 and a light-reflecting surface 103 opposite to each other. When the two adjacent photovoltaic panels 10 are overlapped, at least part of the light-receiving surface 101 of the lower photovoltaic panel 10 and at least part of the light-reflecting surface 103 of the upper photovoltaic panel 10 jointly form the accommodation space 300.

[0043] Specifically, in the third direction Z of the photovoltaic panel 10, the photovoltaic panel 10 comprises a light-receiving surface 101 and a light-reflecting surface 103 opposite to each other. The light-receiving surface 101 faces the external environment after the photovoltaic panel 10 is installed, can directly receive the irradiation of sunlight, and can perform photoelectric conversion. The light-reflecting surface 103 faces away from the sunlight, and can avoid direct sunlight. When the two adjacent photovoltaic panels 10 are overlapped, the two photovoltaic panels 10 at least partially face each other in the projection plane perpendicular to the third direction Z, and at least part of the light-receiving surface 101 of the lower photovoltaic panel 10 and at least part of the light-reflecting surface 103 of the upper photovoltaic panel 10 at least partially overlap in the projection plane perpendicular to the third direction Z. The light-receiving surface 101 of the lower photovoltaic panel 10 and the light-reflecting surface 103 of the upper photovoltaic panel 10 form a certain spacing in the third direction Z, thereby forming a containing space 300. The containing space 300 can accommodate the junction box 30 of at least one of the two adjacent photovoltaic panels 10. That is, the containing space 300 can accommodate the junction box 30 of the photovoltaic panel 100 located above, or the junction box 30 of the photovoltaic panel 100 located below. Among them, the light-receiving surface 101 of the lower photovoltaic panel 10 can provide a support and mounting position for the junction box 30, and the light-reflecting surface 103 of the upper photovoltaic panel 10 can provide a mounting position for the junction box 30. The photovoltaic panel 10 located above can shield the external environment for the junction box 30, avoid the junction box 30 from being eroded by the external environment (such as rainwater or dust, etc.), prolong the service life of the junction box 30, and make the junction box 30 hidden between the photovoltaic panels 10, improve the aesthetics of the entire photovoltaic assembly 1000, optimize the space layout, improve the space utilization, make the installation of the photovoltaic assembly 1000 more compact and reasonable, and enhance the overall performance and stability of the photovoltaic assembly 1000.

[0044] Please refer to Figure 3 In some embodiments, the photovoltaic panel 10 has a mounting area 16 and a power generation area 17, the power generation area 17 is located between the bending portion 12 and the mounting area 16, and the photovoltaic panel 10 is provided with a cell layer 18, and the cell layer 18 is arranged in the power generation area 17.

[0045] Specifically, the power generation area 17 is used for installing the battery layer 18. The power generation area 17 is located between the bending part 12 and the mounting area 16, and is provided with the battery layer 18. The battery layer 18 is composed of a plurality of solar cell units. When the sunlight irradiates the battery layer 18, the photon energy promotes the electron transition in the cell unit, thereby generating direct current electric energy. The generated electric energy is transmitted to the junction box 30 through the joint inside the photovoltaic panel 10. The junction box 30 collects the electric energy generated by the cell unit, and delivers the electric energy to the energy storage device or directly to the power equipment through the external electrical connection. The mounting area 16 is used for lapping the photovoltaic panel 100. In the case of lapping two photovoltaic panels 10 adjacent in the first direction X, the bending part 12 of one photovoltaic panel 10 is lapped on the mounting area 16 of the other photovoltaic panel 10. Exemplarily, the mounting area 16 can also be used to arrange some necessary installation accessories and connecting components, such as screws, supports, etc., so that the installation of the photovoltaic panel 10 is more convenient and reliable. The division of the photovoltaic panel 10 into the mounting area 16 and the power generation area 17 can realize the reasonable partition of functions. The power generation area 17 can concentrate the battery layer 18 for photoelectric conversion, and the mounting area 16 can lap other photovoltaic panels 10, thereby optimizing the structural layout of the photovoltaic panel 10.

[0046] Referring to Figures 1-3 In some embodiments, the junction box 30 is arranged on the mounting area 16 of the lower photovoltaic panel 10, and the mounting area 16 can bear and install the junction box 30. The arrangement of the junction box 30 on the mounting area 16 can shorten the distance between the junction box 30 and the battery layer 18, shorten the distance of electric energy transmission, and improve the electric energy transmission efficiency. In some embodiments, the junction box 30 is arranged on the back light surface 103 of the upper photovoltaic panel 10. The back light surface 103 can block the sunlight, avoid the heating of the junction box 30, and reduce the influence of high temperature on the performance and service life of the junction box 30. In addition, the arrangement of the junction box 30 on the back light surface 103 does not block the light receiving surface 101, which can ensure that the power generation area 17 can receive the sunlight irradiation to the greatest extent, thereby improving the photoelectric conversion efficiency.

[0047] Referring to Figure 3 and Figure 4 In some embodiments, the photovoltaic panel 10 further comprises a connecting part 15 arranged on at least two opposite sides of the body part 11 in the second direction Y. In the second direction Y, the adjacent two photovoltaic panels 100 are connected through the connecting part 15.

[0048] Specifically, when multiple photovoltaic modules 100 are installed, the photovoltaic modules 100 are arranged sequentially along a first direction X and / or a second direction Y to cover the roof. Two adjacent photovoltaic modules 100 along the second direction Y are connected by a connecting portion 15. This prevents the photovoltaic modules 100 from shifting or loosening in the second direction Y, avoiding misalignment of the photovoltaic module 1000 due to long-term use or external factors, and improving the stability of the photovoltaic module 1000. The connecting portion 15 can be one or more, and is not limited in this application. Exemplarily, a photovoltaic panel 10 of this application includes two connecting portions 15. The connecting portion 15 is at least provided in the body portion 11. In other embodiments of this application, the connecting portion 15 can also be provided in the bending portion 12. For example, the connecting portion 15 of this application is provided on the body portion 11 and the bending portion 12. The connecting portion 15 connects the power generation area 17 of the body portion 11 to the opposite sides in the second direction Y, and the bending portion 12 to the opposite sides in the second direction Y. As a result, the overall size of the connecting portion 15 is relatively long. When two adjacent photovoltaic elements 100 are connected by the connecting portion 15, the connecting portion 15 of the two adjacent photovoltaic elements 100 has a large connection area, which can improve the installation stability of the photovoltaic elements 100 in the second direction Y.

[0049] Please see Figure 4 In some embodiments, the connecting portion 15 includes an extension portion 151 and a hook portion 153. The extension portion 151 extends from the body portion 11, and the hook portion 153 bends and extends from the end of the extension portion 151 away from the body portion 11, forming an engagement space 155 with the extension portion 151. In the second direction Y, among two adjacent photovoltaic elements 100, the engagement portion of one photovoltaic panel 10 is accommodated in the engagement space 155 of the other photovoltaic panel 10.

[0050] Specifically, in one embodiment of the connecting part 15, the connecting part 15 comprises an extending sub-part 151 and a hooking sub-part 153, the extending sub-part 151 is used to connect the connecting part 15 and the body part 11. The extending sub-part 151 extends in the third direction Z away from the body part 11. The extending sub-part 151 and the body part 11 of the present application are integrally formed by a part of the body part 11 being crimped. In other embodiments of the present application, the extending sub-part 151 can be separately formed from the body part 11. The hooking sub-part 153 extends from the extending sub-part 151 first towards the body part 11 and then bends to extend away from the body part 11, thereby bending and forming a hooking space 155 with the extending sub-part 151. In the second direction Y, two adjacent photovoltaic pieces 100 are connected by the hooking sub-part of one photovoltaic panel 10 being accommodated in the hooking space 155 of another photovoltaic panel 10. Specifically, when the photovoltaic panel 10 is installed, the hooking sub-part 153 of one photovoltaic panel 10 is inserted into the hooking space 155 of another photovoltaic panel 10. Due to the complementary shapes of the hooking sub-part 153 and the hooking space 155, the hooking sub-part 153 can be hooked into the hooking space 155, thereby connecting the adjacent photovoltaic panels 10 in the second direction Y. The adjacent photovoltaic panels 10 are mechanically locked, preventing displacement and loosening of the photovoltaic panels 10 in the second direction Y, enhancing the structural stability of the photovoltaic assembly 1000. The connecting part 15 does not require additional complex operations such as bolting or welding for connection. The installer only needs to align the hooking sub-part 153 of the photovoltaic panel 10 with the hooking space 155 and insert it to complete the connection, which can improve the installation efficiency of the photovoltaic assembly 1000.

[0051] Referring to Figure 3 In some embodiments, the size of the installation area 16 is greater than the size of the power generation area 17 in the second direction Y.

[0052] Specifically, when the plurality of photovoltaic pieces 100 are arranged in sequence in the second direction Y, the size of the installation area 16 is greater than the size of the power generation area 17, so that the installation areas 16 of adjacent photovoltaic pieces 100 partially overlap. First, the partial overlap can avoid gaps between the photovoltaic pieces 100, thereby preventing rainwater, snowwater, etc. from seeping in from the gaps, avoiding water leakage problems, and enhancing the waterproof performance of the photovoltaic assembly 1000. Second, the overlapping installation areas 16 provide a larger contact area between the photovoltaic pieces 100, making the connection more secure and improving the overall structural stability of the photovoltaic assembly 1000, which can better withstand external environmental factors such as wind, rain, snow, etc. In addition, the larger size of the installation area 16 also provides more tolerance space for installation operations, making it easier for installers to install and improving installation efficiency.

[0053] Referring to Figure 2 and Figure 3In some embodiments, the light-receiving surface 101 of the mounting area 16 is lower than the light-receiving surface 101 of the power generation area 17 in the third direction Z, and the height LI of the bending portion 12 relative to the light-receiving surface 101 of the body portion 11 is not less than the height difference L2 between the light-receiving surface 101 of the mounting area 16 and the light-receiving surface 101 of the power generation area 17, and the third direction Z is perpendicular to the first direction X and the second direction Y.

[0054] Specifically, since the angle of the sun's illumination changes throughout the day, if the light-receiving surface 101 of the mounting area 16 is higher than the light-receiving surface 101 of the power generation area 17, the mounting area 16 can block part of the sunlight at certain angles of the sun's illumination, reducing the light- receiving area of the power generation area 17 and thus reducing the power generation efficiency of the photovoltaic panel 10. Therefore, the light-receiving surface 101 of the mounting area 16 is lower than the light-receiving surface 101 of the power generation area 17, which can avoid the mounting area 16 blocking sunlight and ensure the power generation efficiency of the power generation area 17. Further, when the plurality of photovoltaic components 100 are sequentially overlapped in the first direction X, the height LI of the bending portion 12 relative to the light-receiving surface 101 of the body portion 11 is equal to the height difference L2 between the light-receiving surface 101 of the mounting area 16 and the light-receiving surface 101 of the power generation area 17. Due to the height compensation effect of the bending portion 12, the light-receiving surface 101 of the power generation area 17 of each photovoltaic component 100 can be ensured to be on the same plane, making the appearance of the entire photovoltaic assembly 1000 more flat and beautiful. The height LI of the bending portion 12 relative to the light-receiving surface 101 of the body portion 11 is greater than the height difference L2 between the light-receiving surface 101 of the mounting area 16 and the light-receiving surface 101 of the power generation area 17, which can avoid water accumulation in the mounting area causing water to flow to the junction box. By adjusting the height of the bending portion 12, it is ensured that the light-receiving surface 101 of each power generation area 17 can receive sunlight at the same angle and height, maximizing the use of sunlight resources and improving the power generation performance and stability of the entire photovoltaic system 10000. In addition, the lower light-receiving surface 101 of the mounting area 16 also helps to guide the liquid to flow more smoothly over the surface of the photovoltaic panel 10, reducing the accumulation of water in the mounting area 16 and reducing the risk of water leakage, while keeping the photovoltaic panel 10 clean.

[0055] Please refer to Figure 2 In some embodiments, the mounting area 16 is provided with a groove 19 configured to accommodate at least part of the bending portion 12.

[0056] Specifically, the groove 19 is configured to accommodate the bent portion 12. Exemplarily, the shape and size of the groove 19 match the outer contour of the bent portion 12, thereby ensuring the fitting of the bent portion 12 and the inner wall of the groove 19, improving the fixation and support of the bent portion 12 by the groove 19, and thus ensuring the stable installation of the bent portion 12, making the bent portion 12 less likely to be displaced, avoiding displacement or loosening. The groove 19 also has a positioning effect, facilitating the installation of the bent portion 12. Exemplarily, the bent portion 12 can be an electric wire or the like. In some embodiments, the installation area 16 is provided with the groove 19, which is configured to accommodate at least part of the bent portion 12. On the other hand, the groove 19 has a water guiding function. During the use of the photovoltaic module 1000, water such as rainwater or snowwater may flow along the photovoltaic panel 10, and if the water flows to the position of the junction box 30, it may cause the junction box 30 to be flooded, causing electrical failure or shortening the service life of the junction box 30. The groove 19 of the installation area 16 can guide the water flow, avoiding the direct flow of water to the junction box 30, protecting the junction box 30 and enhancing the waterproof performance and reliability of the photovoltaic module 1000.

[0057] Referring to Figure 2 In some embodiments, in the second direction Y, the depth of the groove 19 decreases towards the side of the body portion 11 which is lower in the second direction Y.

[0058] Specifically, the depth of the groove 19 decreases towards the side of the body portion 11 which is lower in the second direction Y, which can guide the water flow, so that the liquid flowing on the photovoltaic panel 10 can flow out of the photovoltaic panel 10 along the inclined surface of the groove 19, avoiding the accumulation or backflow of the liquid in the groove 19, or overflowing to the junction box 30. Due to the gradual decrease of the depth of the groove 19, the water flow naturally flows downward under the action of gravity, which can drain the water on the photovoltaic panel 10, reduce the erosion time of the water on the photovoltaic module 1000, and also prevent the water from penetrating into the junction box 30, further improving the waterproof performance and reliability of the photovoltaic module 1000. In addition, the inclined groove 19 design also helps to reduce the dead angle inside the groove 19, so that the water flow can more thoroughly flush away the dust, dirt and debris inside the groove 19, keeping the photovoltaic panel 10 clean.

[0059] It should be noted that the above-mentioned embodiments are only used to explain the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still make modifications to the technical solutions recorded in the foregoing embodiments, or make equivalent replacements to some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the description of the present application. In particular, the technical features mentioned in each embodiment can be combined in any way as long as there is no structural conflict. The present 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 module, characterized in that, It includes at least two photovoltaic elements, which are sequentially overlapped in a first direction. The photovoltaic elements include: A photovoltaic panel includes a body and a bent portion, wherein the bent portion is connected to any end of the body and bends relative to the body; and The junction box is electrically connected to the photovoltaic panel, wherein: In the first direction, in two adjacent photovoltaic panels, the bent portion of one photovoltaic panel overlaps the body portion of the other photovoltaic panel to form an accommodating space, which is configured to accommodate a junction box of at least one of the two adjacent photovoltaic panels.

2. The photovoltaic module according to claim 1, characterized in that, The photovoltaic panel includes a light-facing surface and a back-facing surface facing away from each other. When two adjacent photovoltaic panels are overlapped, at least a portion of the light-facing surface of the lower photovoltaic panel and at least a portion of the back-facing surface of the upper photovoltaic panel together form the accommodating space.

3. The photovoltaic module according to claim 2, characterized in that, The photovoltaic panel has an installation area and a power generation area, with the power generation area located between the bent portion and the installation area. A battery layer is disposed within the photovoltaic panel, specifically in the power generation area. The junction box is located in the installation area of ​​the photovoltaic panel; or, The junction box is located on the back surface of the photovoltaic panel.

4. The photovoltaic module according to claim 3, characterized in that, The photovoltaic panel further includes a connecting portion, which is provided at least on both sides of the main body in a second direction. In the second direction, two adjacent photovoltaic elements are connected by the connecting portion. The first direction and the second direction are perpendicular.

5. The photovoltaic module according to claim 4, characterized in that, The connecting portion includes an extension portion and a hook portion. The extension portion extends from the body portion, and the hook portion bends and extends from the end of the extension portion away from the body portion, forming an engagement space with the extension portion. In the second direction, in two adjacent photovoltaic elements, the engagement portion of one photovoltaic panel is accommodated in the engagement space of the other photovoltaic panel.

6. The photovoltaic module according to claim 4, characterized in that, In the second direction, the size of the installation area is larger than the size of the power generation area.

7. The photovoltaic module according to claim 4, characterized in that, In the third direction, the light-facing surface of the installation area is lower than the light-facing surface of the power generation area, and the height of the bent portion relative to the light-facing surface of the main body is not less than the height difference between the light-facing surface of the installation area and the light-facing surface of the power generation area. The third direction is perpendicular to the first direction and the second direction.

8. The photovoltaic module according to claim 4, characterized in that, The mounting area is provided with a groove, which is configured to accommodate at least a portion of the bent portion.

9. The photovoltaic module according to claim 8, characterized in that, In the second direction, the depth of the groove decreases toward the lower side of the body portion in the second direction.

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

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