Frame, photovoltaic module and photovoltaic system

Abstract

The utility model relates to the technical field of photovoltaic, and provides a frame, a photovoltaic module and a photovoltaic system, the frame is provided with a first surface and a second surface which are arranged back to back along a first direction, the first surface is used for being supported on a steel cable, the frame extends lengthwise along a second direction, and the second direction is parallel to the first surface and the second surface; the frame further comprises a clamping structure, the clamping structure comprises at least three protruding parts which are arranged on the first surface and arranged at intervals in the second direction, and a clamping part is defined between any two adjacent protruding parts and the first surface. Wherein the first direction is perpendicular to the second direction; the clamping structure is arranged on the first surface, so that the clamping structure is matched with the steel cable in a clamping manner, and relative movement between the frame and the steel cable is reduced; and meanwhile, the matching mode of the frame and the steel cable is equivalent to lap joint matching, so that the convenience of disassembly and assembly is improved.

Description

Technical Field

[0001] The present application relates to the field of photovoltaic technology, and in particular to frames, photovoltaic modules and photovoltaic systems. Background Art

[0002] Photovoltaic modules are fixed and supported by corresponding photovoltaic brackets so that they can work stably and continuously. With the rapid development of photovoltaic power generation, flexible photovoltaic brackets are used in photovoltaic power generation projects developed in large-span water areas and mountainous areas with complex geological conditions to adapt to complex terrain requirements.

[0003] In the related art, the flexible photovoltaic support includes two supports and a steel cable stretched and fixed between the two supports, and the photovoltaic module is supported and fixed on the steel cable. However, the outer surface of the steel cable is an arc surface. Under the action of external forces such as wind, relative slippage between the photovoltaic module and the steel cable is easy to occur, resulting in weak wind resistance of the photovoltaic module, affecting the normal and stable operation of the photovoltaic module. Utility Model Content

[0004] Based on this, it is necessary to provide a frame, a photovoltaic module and a photovoltaic system to address the problem of relative slippage between the photovoltaic module and the steel cables of the flexible bracket existing in the related art.

[0005] According to one aspect of the present application, an embodiment of the present application provides a frame, which has a first surface and a second surface arranged opposite to each other along a first direction, the first surface is used to support on a steel cable, and the frame extends longitudinally along a second direction, and the second direction is parallel to the first surface and the second surface; the frame also includes a locking structure, the locking structure includes at least three protrusions arranged on the first surface and spaced apart along the second direction, and a locking portion is defined between any two adjacent protrusions and the first surface; wherein the first direction and the second direction are perpendicular.

[0006] In one of the embodiments, the extending direction of the locking portion is arranged at an inclined angle relative to the third direction; wherein the first direction, the second direction and the third direction are perpendicular to each other.

[0007] In one embodiment, the locking structures are provided in plurality, and the plurality of locking structures are arranged at intervals along the third direction; wherein the first direction, the second direction and the third direction are perpendicular to each other.

[0008] In one embodiment, the frame includes at least two groups of locking structures spaced apart along the second direction.

[0009] In one of the embodiments, the cross-sectional shape of the protrusion perpendicular to the third direction is semicircular, quadrilateral or triangular; wherein the first direction, the second direction and the third direction are perpendicular to each other.

[0010] In one embodiment, a height of the protruding portion between two adjacent locking portions protruding from the first surface is smaller than a height of the protruding portion located at an edge of the locking structure along the second direction protruding from the first surface.

[0011] According to another aspect of the present application, an embodiment of the present application further provides a photovoltaic assembly, which includes: a photovoltaic laminate and a frame as described above; the frame encapsulates the photovoltaic laminate.

[0012] According to another aspect of the present application, an embodiment of the present application further provides a photovoltaic system, which includes: a photovoltaic bracket and the photovoltaic component as described above; the photovoltaic bracket includes a steel cable, and the frame support of the photovoltaic component is connected to the steel cable.

[0013] In one of the embodiments, the steel cable is formed by twisting a plurality of steel wires, and the distance between two adjacent protrusions of the frame is smaller than the diameter of a single steel wire.

[0014] In one embodiment, the height of the protruding portion between two adjacent locking portions of the frame protruding from the first surface of the frame is smaller than the radius of the single strand of the steel wire.

[0015] The frame, photovoltaic module and photovoltaic system mentioned above are provided with a locking structure on the first surface, so as to achieve locking cooperation with the steel cable, thereby reducing the relative movement between the frame and the steel cable; in actual use, the steel cable is formed by twisting multiple strands of steel wires, and the outer surface of the entire steel cable has multiple protruding structures around the axial direction of the steel cable, each protruding structure is the outer surface of a single steel wire, and a locking portion is defined between two adjacent protruding portions and the first surface, and each locking portion is used to accommodate at least part of the single steel wire on the outer surface of the steel cable, and the outer surface of the single steel wire is respectively contacted and connected with the surfaces of the two adjacent protruding portions, that is, the locking portion and the outer surface of the single steel wire achieve locking cooperation, so as to limit the relative position between the frame and the steel cable in the second direction, thereby reducing the slippage of the frame relative to the steel cable in the second direction, and at the same time, the cooperation mode between the frame and the steel cable is equivalent to overlapping cooperation, that is, the assembly of the frame and the steel cable can be completed by overlapping cooperation, and accordingly, when it needs to be dismantled, it is only necessary to separate the frame from the steel cable, thereby improving the convenience of disassembly and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] FIG. 1 is a schematic diagram of the overall structure of a frame provided in some embodiments of the present application.

[0017] FIG. 2 is one of the schematic diagrams of the coordination between the frame and the steel cable provided in some embodiments of the present application.

[0018] FIG. 3 is one of the schematic structural diagrams of a frame provided in some embodiments of the present application.

[0019] FIG. 4 is a second schematic diagram of the structure of a frame provided in some embodiments of the present application.

[0020] FIG. 5 is a second schematic diagram of the coordination between the frame and the steel cable provided in some embodiments of the present application.

[0021] FIG. 6 is an enlarged structural schematic diagram of FIG. 5 at F. FIG.

[0022] FIG. 7 is a schematic diagram of the structure of a steel cable provided in some embodiments of the present application.

[0023] FIG. 8 is an enlarged schematic diagram of the structure at D in FIG. 4 .

[0024] FIG. 9 is a schematic diagram of the structure of a photovoltaic module provided in some embodiments of the present application.

[0025] Description of reference numerals:

[0026] 100, frame; 110, latching structure; 111, protruding portion; 112, latching portion;

[0027] 200, steel cable; 210, steel wire;

[0028] 300, photovoltaic laminate; 310, light-transmitting panel; 320, first adhesive layer; 330, battery cell; 340, second adhesive layer; 350, back panel;

[0029] F1, first direction; F2, second direction; F3, third direction. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0031] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0032] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0033] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0034] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0035] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0036] Referring to Figures 1 to 8, Figure 1 shows a schematic diagram of the overall structure of the frame in an embodiment of the present application, Figure 2 shows one of the schematic diagrams of the coordination between the frame and the steel cable in an embodiment of the present application, Figure 3 shows one of the structural schematic diagrams of the frame in an embodiment of the present application, Figure 4 shows a second structural schematic diagram of the frame in an embodiment of the present application, Figure 5 shows a second schematic diagram of the coordination between the frame and the steel cable in an embodiment of the present application, Figure 6 shows an enlarged structural schematic diagram of Figure 5 at F, Figure 7 shows a structural schematic diagram of the steel cable in an embodiment of the present application, and Figure 8 shows an enlarged structural schematic diagram of Figure 4 at D.

[0037] First, the overall structure of the frame provided by an embodiment of the present application is described in conjunction with FIG. 1 and FIG. 2. The frame 100 has a first surface and a second surface disposed opposite to each other along a first direction F1. The first surface is the C surface of the frame 100, and the second surface is the A surface of the frame 100. In FIG. 1, the C surface is indicated by the letter C, and the A surface is indicated by the letter A. There is a groove G between the first surface and the second surface, and the groove G is used to install and support the photovoltaic laminate of the photovoltaic module. The planes perpendicular to the A surface and the C surface are the B surface of the frame 100. In FIG. 1, the B surface is indicated by the letter B. The first direction F1 is the direction from top to bottom or from bottom to top in FIG. 1.

[0038] The first surface is used to support the steel cable 200, and the frame 100 extends longitudinally along the second direction F2, and the second direction F2 is parallel to the first surface and the second surface. The first direction F1 and the second direction F2 are perpendicular, and the second direction F2 is the direction perpendicular to the paper surface in Figures 1 and 2. Accordingly, the steel cable 200 is arranged along the third direction F3, and the third direction F3 is the direction from left to right or from right to left in Figure 2. The first direction F1, the second direction F2 and the third direction F3 are perpendicular to each other.

[0039] In conjunction with Figures 3 to 8, the frame 100 provided in an embodiment of the present application also includes a locking structure 110, and the locking structure 110 includes at least three protrusions 111 arranged on the first surface and spaced apart along the second direction F2, and a locking portion 112 is defined between any two adjacent protrusions 111 and the first surface. In Figure 8, the locking structure 110 is indicated by a dotted line frame, and the locking portion 112 is indicated by a dashed line frame.

[0040] For example, the protrusion 111 may be a protrusion integrally formed on the first surface, or a protrusion fixedly connected to the first surface, which is not limited here. The number of the protrusions 111 in the locking structure 110 may be three, four or more.

[0041] Specifically, the frame 100 shown in this embodiment is provided with a locking structure 110 on the first surface, so as to achieve locking cooperation with the steel cable 200, thereby reducing the relative movement between the frame 100 and the steel cable 200; in actual use, the steel cable 200 is formed by twisting a plurality of steel wires 210, and around the axial direction of the steel cable 200, the outer surface of the entire steel cable 200 has a plurality of protruding structures, each of which is the outer surface of a single steel wire 210, and a locking portion 112 is defined between two adjacent protruding portions 111 and the first surface, and each of the locking portions 112 forms a locking portion for accommodating at least part of the single steel wire 210 on the outer surface of the steel cable 200. The outer surface of the single steel wire 210 is respectively in contact with the surfaces of the two adjacent protrusions 111, that is, the locking portion 112 is engaged with the outer surface of the single steel wire 210 to limit the relative position between the frame 100 and the steel cable 200 in the second direction F2, thereby reducing the slippage of the frame 100 relative to the steel cable 200 in the second direction F2. At the same time, the cooperation between the frame 100 and the steel cable 200 is equivalent to the overlapping cooperation, that is, the assembly of the frame 100 and the steel cable 200 can be completed by the overlapping cooperation. Accordingly, when disassembly is required, it is only necessary to separate the frame 100 from the steel cable 200, thereby improving the convenience of disassembly and assembly.

[0042] As shown in combination with FIG. 7 and FIG. 8 ; in some embodiments, the extending direction of the locking portion 112 shown in this embodiment is set at an inclined angle relative to the third direction.

[0043] The extending direction of the locking portion 112 refers to the length direction of the dotted line frame in FIG. 8 , and the inclination angle is indicated by α in FIG. 8 .

[0044] Specifically, as described above, the steel cable 200 is formed by twisting a plurality of steel wires 210. As shown in FIG. 7 , each strand of the steel wire 210 is spirally wound along the axial direction of the steel cable 200. From the perspective of the portion where the steel cable 200 cooperates with the positioning portion 112, each strand of the steel wire 210 is actually inclined. Therefore, the extending direction of the positioning portion 112 is adaptively set at an inclined angle relative to the third direction F3 to match the inclined steel wire 210. For example, the inclination angle of the positioning portion 112 is the same as the spiral angle of the winding of the steel wire 210. At the same time, since the extension direction of the locking portion 112 is set at an inclined angle relative to the third direction F3, and the steel cable 200 is arranged along the third direction F3 as a whole, the locking portion 112 can limit the sliding of the frame 100 relative to the steel cable 200 in the third direction F3 to a certain extent. Combined with the above-mentioned limiting effect in the second direction F2, the sliding of the frame 100 relative to the steel cable 200 in the second direction F2 and the third direction F3 is reduced by limiting, thereby improving the stability of the relative position between the frame 100 and the steel cable 200.

[0045] 3 , 4 and 8 , in some embodiments, a plurality of the locking structures 110 shown in this embodiment are provided, and the plurality of locking structures 110 are arranged at intervals along the third direction F3 .

[0046] Specifically, as described above, the steel cable 200 is arranged along the third direction F3, that is, the steel cable 200 has a certain length along the third direction F3, and multiple locking structures 110 are arranged at intervals to achieve multi-point contact with the steel cable 200, thereby increasing the contact area between the locking portion 112 and the steel cable 200 and improving the reliability of support and limitation.

[0047] As shown in combination with FIG. 3 and FIG. 4 , in some embodiments, the frame 100 shown in this embodiment includes at least two groups of locking structures 110 spaced apart along the second direction F2 .

[0048] Specifically, each frame 100 needs to be supported by at least two steel cables 200, one steel cable 200 is arranged near one end of the frame 100 in the extension direction, and the other steel cable 200 is arranged near the other end of the frame 100 in the extension direction. Accordingly, by setting at least two groups of locking structures 110, the number of groups of locking structures 110 corresponds to the number of steel cables 200, thereby meeting the requirement of jointly supporting the frame 100 by multiple steel cables 200, and further improving the reliability of support and limitation.

[0049] As shown in FIG. 5 , in some embodiments, the cross-sectional shape of the protrusion 111 shown in this embodiment, which is perpendicular to the third direction F3, is semicircular, quadrilateral or triangular.

[0050] Specifically, according to the size of the steel wire 210 in the steel cable 200, the cross-sectional shape of the protrusion 111 is reasonably set so that the outer surface of the steel wire 210 can fully enter the locking portion 112 between two adjacent protrusions 111, thereby increasing the contact area between the protrusion 111 and the steel wire 210, so as to enhance the limiting effect of the locking portion 112 on the steel cable 200.

[0051] It should be noted that the third direction F3 is the direction perpendicular to the paper surface in FIG. 5 .

[0052] For example, the quadrilateral may be a rectangle or a trapezoid; the triangle may be an isosceles triangle.

[0053] In some specific embodiments, the cross-sectional shape of the protrusion 111 perpendicular to the third direction F3 is a trapezoid, and the bottom side of the trapezoid is connected to the first surface, so that the cross-sectional shape of the clamping portion 112 perpendicular to the third direction F3 is substantially an inverted trapezoid. In this way, it is more conducive to the steel wire 210 being clamped into the clamping portion 112, and the limiting effect of the clamping portion 112 on the steel wire 210 is improved.

[0054] Furthermore, in some embodiments, the height h1 of the protrusion 111 between two adjacent locking portions 112 shown in this embodiment protruding from the first surface is smaller than the height h2 of the protrusion 111 located at the edge of the locking structure 110 along the second direction F2 protruding from the first surface.

[0055] Specifically, in each locking structure 110, viewed along the second direction F2, the protrusions 111 on both sides have a higher protrusion height, and the higher protrusions 111 on both sides are used to cover the entire steel cable 200, thereby being able to play a good limiting role for the steel cable 200, while the middle protrusion 111 is lower in height to adapt to the smaller recessed portion between two adjacent steel wires 210, so that the outer surface of the steel wire 210 can fully contact the protrusion 111, thereby improving the reliability of the limitation.

[0056] Based on the same inventive concept, the present application also provides a photovoltaic module, as shown in FIG9 , which shows a schematic structural diagram of a photovoltaic module in an embodiment of the present application. The photovoltaic module includes: a photovoltaic laminate 300 and a frame 100 as described above; the frame 100 encapsulates the photovoltaic laminate 300.

[0057] Specifically, as described above, the groove between the first surface and the second surface is used to install the photovoltaic laminate 300 .

[0058] The photovoltaic laminate 300 includes a light-transmitting panel 310 , a first adhesive layer 320 , a battery cell 330 , a second adhesive layer 340 and a back panel 350 , which are arranged in sequence.

[0059] In some embodiments, the light-transmitting panel 310 may be double-coated glass; the material of the first adhesive layer 320 and the second adhesive layer 340 may be POE (Polyolefin elastomer) film, EVA (ethylene-vinylacetate copolymer) film, PVB (PolyVinyl Butyral Film) film or EPE (EVA-POE-EVA co-extrusion) film; the back panel 350 may be a transparent material or an opaque material, such as glass or an organic polymer material; the battery cell 330 may be PERC (Passivated Emitter and RearCell), TOPCon (Thin Oxide Passivated Contact cell), HJT (Heterojunction Technology) battery, IBC (Interdigitated back contact) battery or perovskite battery, etc.

[0060] Since the photovoltaic component adopts the frame 100 shown in the above embodiment, the specific structure of the frame 100 refers to the above embodiment. Since the photovoltaic component adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0061] Based on the same inventive concept, the present application also provides a photovoltaic system, including: a photovoltaic support and the photovoltaic assembly as described above; the photovoltaic support includes a steel cable 200 , and a frame 100 of the photovoltaic assembly is supported and connected to the steel cable 200 .

[0062] Specifically, the steel cable 200 is tensioned and fixed between two brackets along the third direction F3, and the photovoltaic module is supported and fixed on the steel cable 200 to meet the layout requirements of photovoltaic power generation projects in large-span water areas or mountainous areas with complex geological conditions. Among them, the locking portion 112 arranged at an inclined angle on the frame 100 can limit the sliding of the frame 100 relative to the steel cable 200 in the second direction F2 and the third direction F3. Even under the action of external forces such as wind, the photovoltaic module and the steel cable 200 can still maintain a relative position unchanged, thereby improving the stability of the relative position between the photovoltaic module and the steel cable 200, and improving the wind resistance of the photovoltaic module, thereby maintaining the normal and stable operation of the photovoltaic module.

[0063] In some embodiments, the steel cable 200 shown in this embodiment is formed by twisting multiple steel wires 210 , and the spacing s between two adjacent protrusions 111 of the frame 100 is smaller than the diameter of the single steel wire 210 .

[0064] Specifically, since the spacing between two adjacent protrusions 111 is smaller than the diameter of the single steel wire 210, from the cross-section of the steel cable 200, the locking portion 112 is equivalent to at least a portion for accommodating the steel wire 210. Thus, the protruding height of the protrusion 111 is reduced as much as possible while satisfying the locking connection, thereby reducing the amount of material used and simplifying the structure.

[0065] In some embodiments, the height h1 of the protruding portion 111 between two adjacent locking portions 112 of the frame 100 shown in this embodiment protruding from the first surface of the frame 100 is smaller than the radius of the single-strand steel wire 210 .

[0066] Specifically, as mentioned above, the height of the protrusion 111 located in the middle should not be too high. A protrusion 111 that is too high will lift up the steel cable 200 as a whole, making it difficult for the steel cable 200 to contact the two protrusions 111 located at the edge. Therefore, by providing a protrusion 111 that is adapted to the smaller recessed portion between two adjacent steel wires 210, the outer surface of the steel wire 210 can fully contact each protrusion 111, thereby improving the reliability of the limit.

[0067] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0068] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A frame for a photovoltaic module, characterized in that: The frame has a first surface and a second surface disposed opposite to each other along a first direction, the first surface is used to support the steel cable, and the frame extends longitudinally along a second direction, and the second direction is parallel to the first surface and the second surface; The frame further includes a positioning structure, the positioning structure includes at least three protrusions arranged on the first surface and spaced apart along the second direction, and a positioning portion is defined between any two adjacent protrusions and the first surface; The first direction is perpendicular to the second direction.

2. The frame according to claim 1, characterized in that: The extending direction of the locking portion is arranged at an inclined angle relative to the third direction; The first direction, the second direction and the third direction are perpendicular to each other.

3. The frame according to claim 1, characterized in that: There are a plurality of the locking structures, and the plurality of the locking structures are arranged at intervals along the third direction; The first direction, the second direction and the third direction are perpendicular to each other.

4. The frame according to claim 1, characterized in that: The frame includes at least two groups of locking structures spaced apart along the second direction.

5. The frame according to claim 1, characterized in that: The cross-sectional shape of the protrusion perpendicular to the third direction is semicircular, quadrilateral or triangular; The first direction, the second direction and the third direction are perpendicular to each other.

6. The frame according to any one of claims 1 to 5, characterized in that: A height of the protruding portion between two adjacent locking portions protruding from the first surface is smaller than a height of the protruding portion located at an edge of the locking structure along the second direction protruding from the first surface.

7. A photovoltaic module, characterized in that: The photovoltaic assembly comprises: a photovoltaic laminate and a frame according to any one of claims 1 to 6; The frame encapsulates the photovoltaic laminate.

8. A photovoltaic system, characterized in that: The photovoltaic system comprises: a photovoltaic support and a photovoltaic assembly as claimed in claim 7; The photovoltaic support comprises a steel cable, and the frame support of the photovoltaic assembly is connected to the steel cable.

9. The photovoltaic system according to claim 8, characterized in that: The steel cable is formed by twisting a plurality of steel wires, and the distance between two adjacent protrusions of the frame is smaller than the diameter of a single steel wire.

10. The photovoltaic system according to claim 9, characterized in that: The height of the protruding portion between two adjacent locking portions of the frame protruding from the first surface of the frame is smaller than the radius of the single strand of the steel wire.

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