Flexible solar cell module and connecting structure thereof

Abstract

The utility model discloses a flexible solar cell module and a connecting structure thereof. The flexible solar cell module comprises a flexible front packaging part, a solar cell string and a flexible rear packaging part which are sequentially laminated and packaged into a whole, wherein the flexible front packaging part or the flexible rear packaging part comprises a built-in flexible frame, and the built-in flexible frame is positioned on the periphery of the solar cell string and is in packaging contact with the solar cell string; according to the utility model, the strength of the flexible solar cell module is improved, the loss of the flexible solar cell module in the carrying, mounting and connecting processes is effectively reduced, the convenience of the flexible solar cell module in the carrying, mounting and connecting processes is increased, and the large-scale application of the flexible solar cell module is further promoted.

Description

TECHNICAL FIELD

[0001] The utility model relates to photovoltaic power generation field, concretely relates to a kind of flexible solar cell module, and the utility model is also related to the connecting structure of the flexible solar cell module. BACKGROUND

[0002] Because flexible packaging solar cell module (mainly by flexible packaging material, encapsulation adhesive film and solar cell string are composed) relative rigid glass packaging solar cell module (mainly by metal frame, front glass, back plate, encapsulation adhesive film and solar cell string are composed) with light weight, bendable, good with shape, easy to install and many other advantages, so that flexible packaging solar cell module is widely promoted, has huge market application value.However, because flexible packaging solar cell module lacks rigid frame as protection, thus it is prone to breakage, hidden crack and many other bad in the process of handling, installation.If metal frame is directly set on the outer periphery of flexible packaging solar cell module, then it will lead to the flexible advantage of flexible packaging solar cell module is negatively influenced.

[0003] Therefore, applicant hopes to seek technical scheme to solve above technical problem. SUMMARY

[0004] Therefore, the utility model aims at providing a kind of flexible solar cell module and connecting structure, improve the strength of flexible solar cell module, effectively reduce the loss of flexible solar cell module in handling and installation connection process, increase the convenience of flexible solar cell module in handling and installation connection process, further promote the large-scale application of flexible solar cell module.

[0005] The technical scheme adopted by the utility model is as follows:

[0006] A kind of flexible solar cell module, it includes flexible front encapsulation portion, solar cell string and flexible rear encapsulation portion that are laminated and encapsulated as a whole in sequence;Wherein, the flexible front encapsulation portion or flexible rear encapsulation portion includes built-in flexible frame, the built-in flexible frame is located at the outer periphery of the solar cell string and encapsulation contact with the solar cell string.

[0007] Preferably, the solar cell string has the characteristics of bendable winding, and the bending radius is less than 30cm.

[0008] Preferably, the bending radius of the built-in flexible frame is equal to or less than the bending radius of the solar cell string.

[0009] Preferably, the built-in flexible frame is woven by metal wire and / or fiber (which can be carbon fiber or glass fiber or other material fiber);The weaving described in the whole application is not particularly limited to the form of braiding and the shape of braiding.

[0010] Preferably, the corner and / or edge position of the flexible solar cell module is provided with a hole position for force bearing and / or installation connection, that is, the hole position can be used as a reserved force bearing hole position in the carrying process, and can also be used as a connection hole position for subsequent installation connection.

[0011] Preferably, the cell pieces in the solar cell string include gallium arsenide solar cell pieces and / or copper indium gallium selenide solar cell pieces and / or amorphous silicon thin film solar cell pieces and / or flexible crystalline silicon solar cell pieces and / or perovskite solar cell pieces and / or dye-sensitized solar cell pieces and / or organic solar cell pieces; further preferably, the cell pieces in the solar cell string described throughout the present application preferably adopt flexible monocrystalline silicon solar cell pieces; wherein the edge portion of the flexible monocrystalline silicon solar cell piece is subjected to selective rounding processing, so that the curvature radius of the pyramid valley of the front surface, back surface and side surface of the edge is greater than 50nm; so that the curvature radius of the corner, spur and groove of the side surface is greater than 25nm, and the distance from the area subjected to rounding processing to the edge of the flexible monocrystalline silicon solar cell piece is not greater than 5mm; for more preferred solutions of the flexible monocrystalline silicon solar cell piece involved in the present application, please refer directly to the relevant recorded contents of the prior published patent applications CN202211090758X, CN202310136324.7 and CN202310175757.3, which part is not the innovative content of the present application, and therefore will not be expanded.

[0012] Preferably, the flexible front encapsulation part includes a flexible front encapsulation transparent plate and a front encapsulation adhesive film, and the flexible rear encapsulation part includes a rear encapsulation adhesive film and a flexible rear encapsulation back plate, wherein the front encapsulation adhesive film and the rear encapsulation adhesive film are provided with the built-in flexible frame.

[0013] It should be noted that the flexible front encapsulation transparent plate can be any known flexible front plate material, the front encapsulation adhesive film and the rear encapsulation adhesive film can be any known flexible encapsulation adhesive film material, and the flexible rear encapsulation back plate can be any known flexible back plate material, and the present application does not particularly limit them, and these are not separately regarded as the innovative content of the present application; preferably, the flexible front plate material adopts one or a combination of more than one material of ETFE (ethylene-tetrafluoroethylene copolymer), PI (polyimide), PET (polyethylene terephthalate), and ultra-thin glass, so as to ensure that the optical transmittance of the flexible front encapsulation transparent plate reaches more than 85%, and the water vapor transmittance is not higher than 20 g / m² / day; the flexible encapsulation adhesive film material is preferably one or a combination of more than one of EVA (ethylene-vinyl acetate copolymer), POE (polyolefin elastomer), EPE (a composite modification of EVA material and POE material, manufactured by co-extrusion process, belonging to co-extrusion type POE adhesive film), and PVB (polyvinyl butyral); the water vapor transmittance is not higher than 30 g / m² / day; the flexible back plate material can be an opaque plate with flexibility, bending, and curling performance, including metal sheet, non-woven fabric, etc., and can also directly adopt the flexible front encapsulation transparent plate.

[0014] Preferably, a connecting structure of a flexible solar cell module comprises a plurality of flexible solar cell modules according to the above description, wherein each of the flexible solar cell modules is provided with a hole position at a corner and / or an edge position, and the hole position is connected to an adjacent flexible solar cell module through a connecting piece.

[0015] Preferably, each of the flexible solar cell modules is connected to an adjacent flexible solar cell module in a transverse and / or vertical and / or diagonal direction through a connecting piece, so as to obtain a connected array of the flexible solar cell modules.

[0016] Preferably, the connecting piece preferably adopts a metal fastener and / or a fastener and / or a strap, and of course other suitable connecting piece structures can also be adopted, and the present application does not particularly limit this.

[0017] The utility model discloses a built-in flexible frame structure in the flexible solar cell module, after laminating and packaging, the built-in flexible frame is located at the outer periphery of the solar cell string and is in contact with the solar cell string packaging, which improves the strength of the flexible solar cell module, effectively reduces the loss of the flexible solar cell module during transportation and installation connection, increases the convenience of the flexible solar cell module during transportation and installation connection, and further promotes the large-scale application of the flexible solar cell module. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is the laminated packaging structure schematic view of the flexible solar cell module in the specific embodiment of the present application.

[0019] Figure 2 is a structural schematic diagram of a flexible solar cell module in the specific embodiment of the present application;

[0020] Figure 3 is Figure 2 is an enlarged view of the structure at A in FIG. 1;

[0021] Figure 4 is a connection array structural schematic diagram of a flexible solar cell module in the specific embodiment of the present application. DETAILED DESCRIPTION

[0022] The embodiment provides a flexible solar cell module, which comprises a flexible front encapsulation part, a solar cell string and a flexible rear encapsulation part which are laminated and encapsulated in sequence; wherein the flexible front encapsulation part or the flexible rear encapsulation part comprises a built-in flexible frame, and the built-in flexible frame is located at the outer periphery of the solar cell string and encapsulated with the solar cell string.

[0023] In order for those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the protection scope of the present application.

[0024] Embodiment 1: Please refer to Figure 1 and Figure 2 As shown in FIG. 1, a flexible solar cell module 10 comprises a flexible front encapsulation transparent plate 101, a front encapsulation adhesive film 102, a built-in flexible frame 103, a solar cell string 104, a rear encapsulation adhesive film 105 and a flexible rear encapsulation back plate 106 which are laminated and encapsulated in sequence, and the built-in flexible frame 103 is located at the outer periphery of the solar cell string 104 and encapsulated with the solar cell string 104; wherein the flexible front encapsulation transparent plate 101 is made of an ETFE film and a PET transparent plate, the front encapsulation adhesive film 102 is made of an EVA adhesive film, and the built-in flexible frame 103 is woven by glass fibers (the bending radius is less than the bending radius of the solar cell string), thereby forming a flexible front encapsulation part of the flexible solar cell module 10.

[0025] The flexible front encapsulation transparent plate 101 is made of an ETFE film and a PET transparent plate, the front encapsulation adhesive film 102 is made of an EVA adhesive film, and the built-in flexible frame 103 is woven by glass fibers (the bending radius is less than the bending radius of the solar cell string), thereby forming a flexible front encapsulation part of the flexible solar cell module 10.

[0026] The cell pieces of the solar cell string 104 adopt the flexible monocrystalline silicon solar cell piece provided in the embodiment 1 of CN202211090758X, have the characteristics of being bendable and wound, and the bending radius is less than 25 cm; in other embodiments, the cell pieces of the solar cell string can also adopt any one or a combination of gallium arsenide solar cell pieces, copper indium gallium selenide solar cell pieces, amorphous silicon thin film solar cell pieces, flexible crystalline silicon solar cell pieces, perovskite solar cell pieces, dye-sensitized solar cell pieces and organic solar cell pieces;

[0027] The rear encapsulation adhesive film 105 adopts an EVA adhesive film, and the flexible rear encapsulation back plate 106 adopts a PET back plate, thereby forming a flexible rear encapsulation part of the flexible solar cell module 10;

[0028] In the embodiment, the four corner holes 107 are provided at the four corners of the flexible solar cell module 10 (in other embodiments, the hole positions can also be arranged at other edge positions of the flexible solar cell module 10), which can be used as reserved stress hole positions during transportation, or as connection hole positions for subsequent installation and connection.

[0029] Please further refer to Figure 2 and Figure 3 In order to realize the electrical connection and output effect, the flexible front encapsulation part of the flexible solar cell module 10 is provided with a junction box 108 (in other embodiments, the junction box can also be arranged on the surface of the flexible rear encapsulation part), and the lead-out terminals 109 are connected through the junction box 108.

[0030] Embodiment 2: A connection structure of a flexible solar cell module, comprising a plurality of flexible solar cell modules 10 according to the above embodiment 1, wherein the hole positions of each flexible solar cell module 10 are connected to the adjacent flexible solar cell module 10 through the connecting piece 20;

[0031] Preferably, in the embodiment, each flexible solar cell module 10 is connected to the adjacent flexible solar cell module 10 in the horizontal and / or vertical and / or diagonal direction through the connecting piece 20, to obtain a connection group array of the flexible solar cell module 10, and finally realize the connection group array of the flexible solar cell module with a super large area, please refer to Figure 4 As shown in the figure, in the horizontal arrangement of the flexible solar cell module connection group array, the numbers of the flexible solar cell modules are connected from 1 to 2 to n; in the vertical arrangement of the flexible solar cell module connection group array, the numbers of the flexible solar cell modules are connected from 1 to 2 to n.

[0032] Preferably, in the embodiment, the connecting piece 20 adopts a metal fastener, and in other embodiments, the connecting piece 20 can also adopt a fastener or a strap or other suitable connecting piece structure.

[0033] Embodiment 3: The remaining technical solutions of this embodiment 3 are the same as those of embodiment 1 or embodiment 2, except that in this embodiment 3, the built-in flexible frame 103 is woven by carbon fiber (the bending radius is smaller than that of the solar cell string).

[0034] Embodiment 4: The remaining technical solutions of this embodiment 4 are the same as those of embodiment 1 or embodiment 2, except that in this embodiment 4, the built-in flexible frame 103 is woven by stainless steel wire (the bending radius is smaller than that of the solar cell string).

[0035] Embodiment 5: The remaining technical solutions of this embodiment 5 are the same as those of embodiment 2, except that in this embodiment, each flexible solar cell assembly 10 is connected to its adjacent flexible solar cell assembly 10 in the lateral direction through the connecting piece 20, so as to obtain a connected group array of the flexible solar cell assemblies 10, and finally realize the connection of the flexible solar cell assembly with super large area.

[0036] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be realized in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0037] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A flexible solar cell module, characterized by, The flexible solar cell module comprises a flexible front encapsulation part, a solar cell string and a flexible rear encapsulation part laminated in sequence; wherein the flexible front encapsulation part or the flexible rear encapsulation part comprises an internal flexible frame, which is located at the outer periphery of the solar cell string and is in encapsulation contact with the solar cell string.

2. The flexible solar cell module according to claim 1, wherein The solar cell string has the characteristic of being bendable and the bending radius is less than 30 cm.

3. The flexible solar cell module according to claim 2, wherein The bending radius of the internal flexible frame is equal to or less than the bending radius of the solar cell string.

4. The flexible solar cell module according to claim 1 or 2, wherein The internal flexible frame is woven by metal wires and / or fibers.

5. The flexible solar cell module according to claim 1 or 2, wherein The corners and / or edges of the flexible solar cell module are provided with hole positions for force bearing and / or installation connection.

6. The flexible solar cell module according to claim 1 or 2, wherein The solar cell string comprises gallium arsenide solar cell pieces and / or copper indium gallium selenide solar cell pieces and / or amorphous silicon thin film solar cell pieces and / or flexible crystalline silicon solar cell pieces and / or perovskite solar cell pieces and / or dye-sensitized solar cell pieces and / or organic solar cell pieces.

7. The flexible solar cell module according to claim 1, wherein The flexible front encapsulation part comprises a flexible front encapsulation transparent plate and a front encapsulation adhesive film, and the flexible rear encapsulation part comprises a rear encapsulation adhesive film and a flexible rear encapsulation back plate, wherein the internal flexible frame is arranged between the front encapsulation adhesive film and the rear encapsulation adhesive film.

8. A connection structure for a flexible solar cell module, characterized in that, The flexible solar cell module comprises a plurality of flexible solar cell modules according to any one of claims 1-7, wherein the corners and / or edges of each flexible solar cell module are provided with hole positions, and the hole positions are connected to the adjacent flexible solar cell modules by connecting members.

9. The connecting structure of the flexible solar cell module according to claim 8, wherein The flexible solar cell modules are connected to the adjacent flexible solar cell modules in the horizontal and / or vertical and / or diagonal directions by connecting members, thereby obtaining a connected array of flexible solar cell modules.

10. The connecting structure of the flexible solar cell module according to claim 8, wherein The connecting members are metal fasteners and / or fasteners and / or straps.

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