Solar cell panel

Abstract

The utility model discloses a solar cell panel. The solar cell panel comprises a front plate, a first adhesive film, a first protection piece, a second adhesive film, a cell piece, a third adhesive film, a second protection piece, a fourth adhesive film and a back plate which are sequentially stacked from top to bottom, the first protection piece is tightly attached to the first adhesive film and the second adhesive film, and the second protection piece is tightly attached to the third adhesive film and the fourth adhesive film; the solar cell panel is configured in a way that a first protection piece and a second protection piece are respectively arranged on two opposite side surfaces of the cell piece so as to cover the cell piece. According to the solar cell panel, the first protection piece and the second protection piece are respectively arranged on the two opposite side surfaces of the cell piece, so that the cell piece can be coated, the cell piece can be fully protected, subfissure of the cell piece can be controlled, cracking of the cell piece is reduced, and the overall strength of the solar cell panel is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of solar cell panels, in particular to a solar cell panel. Background Art

[0002] With the development of new energy, solar panels have been widely used. The core component of solar panels is the cell. The cell is thin and brittle. During production, transportation and use, it is easy to cause cell cracks and fragments, resulting in the attenuation of the electrical performance of the solar panel. Therefore, controlling cell cracks, especially controlling cell cracks, has always been a major research topic for photovoltaic industry component manufacturers.

[0003] In order to adapt to various usage scenarios, consumer-grade products such as flexible solar panels are needed. Existing flexible solar panels can be bent after lamination and packaging. However, although they are too soft and meet the flexibility requirements, they are insufficient in rigidity and cannot protect the battery cells, making them prone to hidden cracks during use. Utility Model Content

[0004] The embodiment of the utility model provides a solar cell panel to solve at least one of the above-mentioned technical problems.

[0005] A solar cell panel according to an embodiment of the utility model comprises a front plate, a first adhesive film, a first protective member, a second adhesive film, a battery sheet, a third adhesive film, a second protective member, a fourth adhesive film and a back plate which are stacked in sequence from top to bottom, wherein the first protective member is closely attached to the first adhesive film and the second adhesive film, and the second protective member is closely attached to the third adhesive film and the fourth adhesive film;

[0006] The solar cell panel is configured to cover the cell sheet by respectively arranging the first protective member and the second protective member on two opposite sides of the cell sheet.

[0007] In the above solar cell panel, the first protective member and the second protective member are respectively provided on two opposite sides of the cell to cover the cell, so that the cell can be fully protected, thereby controlling the hidden cracks of the cell, reducing the occurrence of cell cracks, and improving the overall strength of the solar cell panel.

[0008] In certain embodiments, the first protection member and the second protection member both include polyvinylidene fluoride films.

[0009] In certain embodiments, the first adhesive film, the second adhesive film, the third adhesive film, and the fourth adhesive film all include ethylene-vinyl acetate copolymer films.

[0010] In some embodiments, the thickness of the first protective member is in the range of [0.20 mm, 0.30 mm].

[0011] In some embodiments, the thickness of the second protective member is in the range of [0.20 mm, 0.30 mm].

[0012] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0014] Figure 1 It is a schematic structural diagram of a solar cell panel according to an embodiment of the utility model.

[0015] Reference numerals:

[0016] 100, solar cell panel; 10, front panel; 12, first adhesive film; 14, first protective member; 16, second adhesive film; 18, battery cell; 20, third adhesive film; 22, second protective member; 24, fourth adhesive film; 26, back panel. DETAILED DESCRIPTION

[0017] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0018] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying 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 utility model. In the description of the present utility model, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0019] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. It can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0020] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0021] The disclosure herein provides many different embodiments or examples for realizing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described herein. Of course, they are merely examples, and the purpose is not to limit the utility model. In addition, the utility model may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the utility model provides various specific examples of processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

[0022] Please refer to Figure 1 A solar panel 100 according to an embodiment of the utility model comprises a front panel 10, a first adhesive film 12, a first protective member 14, a second adhesive film 16, a cell 18, a third adhesive film 20, a second protective member 22, a fourth adhesive film 24 and a back panel 26 which are stacked in sequence from top to bottom. The first protective member 14 is closely attached to the first adhesive film 12 and the second adhesive film 16, and the second protective member 22 is closely attached to the third adhesive film 20 and the fourth adhesive film 24. The solar panel 100 is configured to cover the cell 18 by respectively arranging the first protective member 14 and the second protective member 22 on two opposite sides of the cell 18.

[0023] In the above-mentioned solar cell panel 100, the first protective member 14 and the second protective member 22 are respectively provided on two opposite sides of the cell 18 to cover the cell 18, so that the cell 18 can be fully protected, thereby controlling the hidden cracks of the cell 18, reducing the occurrence of cell 18 cracks, and improving the overall strength of the solar cell panel 100.

[0024] Specifically, the core component of the solar cell panel 100 is the cell 18. The main component of the cell 18 is crystalline silicon. The thickness of a single cell 18 is 140um-200um. The small thickness and brittleness of the cell 18 can easily cause hidden cracks and fragments in the production, transportation, and use processes, causing the electrical performance of the solar cell panel 100 to deteriorate.

[0025] The solar panel 100 comprises a flexible solar panel, wherein the front panel 10, the first adhesive film 12, the first protective member 14, the second adhesive film 16, the battery sheet 18, the third adhesive film 20, the second protective member 22, the fourth adhesive film 24 and the back panel 26 are all layered structures. In one embodiment, during the manufacturing process, the front panel 10, the first adhesive film 12, the first protective member 14, the second adhesive film 16, the battery cell 18, the third adhesive film 20, the second protective member 22, the fourth adhesive film 24 and the back panel 26 are stacked in sequence from top to bottom, and then the stacked solar panel 100 is placed in a laminator. The laminator can heat the solar panel 100. Since the first protective member 14 is tightly fitted with the first adhesive film 12 and the second adhesive film 16 and the second protective member 22 is tightly fitted with the third adhesive film 20 and the fourth adhesive film 24, the first protective member 14 and the first adhesive film 12 and the second adhesive film 16 can be completely fused without delamination, the second protective member 22 and the third adhesive film 20 and the fourth adhesive film 24 can be completely fused without delamination, and the toughness of the first protective member 14 and the second protective member 22 is enhanced, and the tensile resistance effect is good. By respectively providing a first protective member 14 and a second protective member 22 on two opposite sides of the cell 18 , the cell 18 can be covered so that the cell 18 can be fully protected, thereby controlling hidden cracks of the cell 18 , reducing the occurrence of cell 18 cracks, and improving the overall strength of the solar cell panel 100 .

[0026] In certain embodiments, the first protection member 14 and the second protection member 22 both include polyvinylidene fluoride films.

[0027] In this way, the flexibility and tensile strength of the first protective member 14 and the second protective member 22 can be enhanced, thereby preventing the battery cell 18 from breaking when being bent.

[0028] Specifically, the first protective member 14 and the second protective member 22 can both be polyvinylidene fluoride film, also known as PGF film. Polyvinylidene fluoride film is a polymer material with good chemical stability, mechanical properties and thermal stability. It can resist the corrosion of most acids, alkalis and organic solvents, has high tensile strength and wear resistance, and can maintain stable performance within the temperature range of -40°C to 150°C, thereby enhancing the flexibility and tensile strength of the first protective member 14 and the second protective member 22, and preventing the battery cell 18 from breaking when bent.

[0029] In addition, in other embodiments, the first protective member 14 and the second protective member 22 may also be liquid crystal polymer films, that is, LCP films. Liquid crystal polymer films are a high-performance special engineering plastic with very high mechanical strength and modulus, strong ability to withstand high loads, good toughness, and can remain stable at high temperatures. It has excellent heat resistance, and the long-term use temperature can reach 180°C to 260°C, and has good tolerance to most chemicals, including acids, alkalis and organic solvents.

[0030] In certain embodiments, the first adhesive film 12 , the second adhesive film 16 , the third adhesive film 20 , and the fourth adhesive film 24 all include ethylene-vinyl acetate copolymer films.

[0031] In this way, the first adhesive film 12, the second adhesive film 16, the third adhesive film 20 and the fourth adhesive film 24 can be transparent, which is beneficial to the illumination of the solar panel, and has good UV resistance and aging resistance, and is suitable for outdoor use.

[0032] Specifically, the first adhesive film 12, the second adhesive film 16, the third adhesive film 20 and the fourth adhesive film 24 can be ethylene-vinyl acetate copolymer films, that is, EVA films. Ethylene-vinyl acetate copolymer is a thermoplastic polymer synthesized by copolymerization of ethylene and vinyl acetate. The ethylene-vinyl acetate copolymer film can be transparent and has good tolerance, including acid, alkali and some organic solvents. It has good UV resistance and aging resistance, is suitable for outdoor use, can be used in a wide temperature range, and has good thermal stability.

[0033] Please combine Figure 1 In some embodiments, the thickness of the first protective member 14 is in the range of [0.20 mm, 0.30 mm].

[0034] In this way, while meeting the toughness and tensile strength requirements of the first protective member 14 , the use of materials is reduced, the cost is lowered, and the overall thickness of the solar cell panel 100 is reduced.

[0035] Specifically, in Figure 1In the embodiment, the thickness of the first protective member 14 can be represented by D1, and the range of D1 can be selected from 0.20 mm to 0.30 mm, thereby reducing the use of materials, reducing costs, and reducing the overall thickness of the solar cell panel 100 while meeting the toughness and tensile strength requirements of the first protective member 14.

[0036] The thickness D1 of the first protective member 14 may be 0.20 mm, 0.21 mm, 0.22 mm, 0.23 mm, 0.24 mm, 0.25 mm, 0.26 mm, 0.27 mm, 0.28 mm, 0.29 mm, 0.30 mm, and other values ​​between 0.20 mm and 0.30 mm.

[0037] Please combine Figure 1 In some embodiments, the thickness of the second protective member 22 is in the range of [0.20 mm, 0.30 mm].

[0038] In this way, while meeting the toughness and tensile strength requirements of the second protective member 22 , the use of materials is reduced, the cost is lowered, and the overall thickness of the solar cell panel 100 is reduced.

[0039] Specifically, in Figure 1 In the embodiment, the thickness of the second protective member 22 can be represented by D2, and the range of D2 can be selected from 0.20 mm to 0.30 mm, thereby reducing the use of materials, reducing costs, and reducing the overall thickness of the solar cell panel 100 while meeting the toughness and tensile strength of the second protective member 22.

[0040] The thickness D2 of the second protective member 22 may be 0.20 mm, 0.21 mm, 0.22 mm, 0.23 mm, 0.24 mm, 0.25 mm, 0.26 mm, 0.27 mm, 0.28 mm, 0.29 mm, 0.30 mm, and other values ​​between 0.20 mm and 0.30 mm.

[0041] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0042] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A solar cell panel, characterized in that: It includes a front plate, a first adhesive film, a first protective member, a second adhesive film, a battery cell, a third adhesive film, a second protective member, a fourth adhesive film and a back plate which are stacked in sequence from top to bottom, wherein the first protective member is closely attached to the first adhesive film and the second adhesive film, and the second protective member is closely attached to the third adhesive film and the fourth adhesive film; The solar cell panel is configured to cover the cell sheet by respectively arranging the first protective member and the second protective member on two opposite sides of the cell sheet.

2. The solar cell panel according to claim 1, characterized in that: The first protection member and the second protection member each include a polyvinylidene fluoride film.

3. The solar cell panel according to claim 2, characterized in that: The first adhesive film, the second adhesive film, the third adhesive film and the fourth adhesive film all include ethylene-vinyl acetate copolymer films.

4. The solar cell panel according to claim 3, characterized in that: The thickness of the first protective member is in the range of [0.20 mm, 0.30 mm].

5. The solar cell panel according to claim 3, characterized in that: The thickness range of the second protective member is [0.20 mm, 0.30 mm].

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