Photovoltaic module

Abstract

The utility model relates to the field of photovoltaic technology, and especially relates to a photovoltaic assembly. The photovoltaic module comprises front glass, a first release layer, a battery piece, a second release layer and a back plate, the first release layer is arranged between the battery piece and the front glass, the second release layer is arranged between the battery piece and the back plate, the first release layer wraps the front face and the first circumferential side face of the battery piece, and the second release layer wraps the back face and the second circumferential side face of the battery piece. And the first peripheral side surface and the second peripheral side surface jointly form a complete peripheral side surface of the battery piece. The photovoltaic module is simple in structure, and the front surface, the back surface and the peripheral side surface of the battery piece are not adhered through the arrangement of the first release layer and the second release layer, so that when the photovoltaic module is recycled in the later period, related operators can conveniently disassemble the battery piece, the disassembly difficulty of the photovoltaic module is reduced, and the production efficiency is improved. The operation efficiency is improved and the cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaics, in particular to a photovoltaic component. Background Art

[0002] Photovoltaic modules are generally made of a large amount of recyclable materials. Therefore, dismantling and recycling waste photovoltaic modules can not only save resources and reduce costs, but also reduce pollution to the environment.

[0003] The basic structure of existing photovoltaic modules consists of a stacked structure consisting of back glass, back film, cells, front film, and back glass. The back and front films not only seal the cells but also tightly bond them to the back and front glass. This makes it difficult to completely separate the cells from the film and completely remove them from the film during recycling, increasing the difficulty and cost of disassembling the modules.

[0004] Therefore, it is urgent to design a photovoltaic module to solve the above technical problems. Utility Model Content

[0005] The purpose of the utility model is to provide a photovoltaic module, which can conveniently disassemble the solar cells when recycling the photovoltaic module, thereby reducing the difficulty of disassembling the photovoltaic module and saving costs.

[0006] To achieve this purpose, the present invention adopts the following technical solutions:

[0007] The utility model provides a photovoltaic module, comprising front glass, a first release layer, a battery cell, a second release layer and a back plate, wherein the first release layer is arranged between the battery cell and the front glass, the second release layer is arranged between the battery cell and the back plate, the first release layer wraps the front side and the first side surface of the battery cell, and the second release layer wraps the back side and the second side surface of the battery cell.

[0008] As an optional technical solution for a photovoltaic module, the first release layer has a side close to the battery cell and a side away from the battery cell both being release surfaces, and the second release layer has a side close to the battery cell and a side away from the battery cell both being release surfaces.

[0009] As an optional technical solution for a photovoltaic module, the side of the first release layer close to the battery cell is a release surface, and the side of the first release layer away from the battery cell is an adhesive surface; the side of the second release layer close to the battery cell is a release surface, and the side of the second release layer away from the battery cell is an adhesive surface.

[0010] As an optional technical solution for a photovoltaic module, the first release layer has a first release area and a first non-release area on a side close to the battery cell, and the second release layer has a second release area and a second non-release area on a side close to the battery cell. The first release area wraps the front and first side surface of the battery cell, and the second release area wraps the back and second side surface of the battery cell. The first non-release area and the second non-release area are bonded to each other.

[0011] As an optional technical solution of a photovoltaic module, the first release area is arranged opposite to the second release area, and the first non-release area is arranged opposite to the second non-release area.

[0012] As an optional technical solution for a photovoltaic assembly, the first release area and the second release area are jointly enclosed to form an accommodating space for accommodating the solar cell.

[0013] As an optional technical solution for a photovoltaic module, the side edges of the front glass, the side edges of the first release layer, the side edges of the second release layer, and the side edges of the back panel are all flush.

[0014] As an optional technical solution for a photovoltaic module, the photovoltaic module also includes a positive adhesive film and a back adhesive film, the positive adhesive film is located between the front glass and the first release layer, and the two sides of the positive adhesive film are respectively bonded to the front glass and the first release layer; the back adhesive film is located between the back panel and the second release layer, and the two sides of the back adhesive film are respectively bonded to the back panel and the second release layer.

[0015] As an optional technical solution for a photovoltaic module, the side edges of the front glass, the side edges of the positive adhesive film, the side edges of the first release layer, the side edges of the second release layer, the side edges of the back adhesive film and the side edges of the back panel are all flush.

[0016] As an optional technical solution for a photovoltaic module, the cell is a bifacial cell and the backplane is a glass backplane.

[0017] The beneficial effects of the present invention include at least:

[0018] The present invention provides a photovoltaic module, which mainly includes front glass, a first release layer, a battery cell, a second release layer and a back plate. The first release layer is provided between the battery cell and the front glass, and the second release layer is provided between the battery cell and the back plate. The first release layer wraps the front and first side surfaces of the battery cell, and the second release layer wraps the back and second side surfaces of the battery cell. The first side surface and the second side surface together constitute the complete side surface of the battery cell. The photovoltaic module in the present invention has a simple structure. By providing the first release layer and the second release layer, the front, back and side surfaces of the battery cell will not be adhered. In this way, when the photovoltaic module is recycled later, the relevant operators can easily disassemble the battery cell, thereby reducing the difficulty of disassembling the photovoltaic module, improving work efficiency and saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0020] Figure 1 This is a schematic structural diagram of a photovoltaic module provided in Example 1 of the present utility model;

[0021] Figure 2 This is a schematic structural diagram of a photovoltaic module provided in the second embodiment of the present utility model;

[0022] Figure 3 This is a schematic structural diagram of the first release layer provided in Example 2 of the present utility model;

[0023] Figure 4 This is a schematic structural diagram of the second release layer provided in Example 2 of the present utility model;

[0024] Figure 5 The structure of the photovoltaic module provided by the third embodiment of the present invention is shown in FIG. Figure 1 ;

[0025] Figure 6 The structure of the photovoltaic module provided by the third embodiment of the present invention is shown in FIG. Figure 2 .

[0026] Reference numerals

[0027] 100, front glass; 200, battery cell; 300, back panel; 400, first release layer; 410, first release area; 420, first non-release area; 500, second release layer; 510, second release area; 520, second non-release area; 600, positive adhesive film; 700, back adhesive film. DETAILED DESCRIPTION

[0028] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved more clear, the technical solutions of the present invention are further explained below with reference to the accompanying drawings and through specific implementation methods.

[0029] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0030] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0031] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are used to refer to positions or locations based on the positions or locations shown in the accompanying drawings. These terms are intended solely to facilitate description and simplify operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0032] In the description of this embodiment, unless otherwise specified, the term "plurality" refers to two or more quantities.

[0033] Example 1

[0034] This embodiment provides a photovoltaic module, which can conveniently remove the solar cells when recycling the photovoltaic module, thereby reducing the difficulty of disassembling the photovoltaic module and saving costs.

[0035] like Figure 1 As shown, the photovoltaic module mainly includes a front glass 100, a first release layer 400, a battery cell 200, a second release layer 500 and a back plate 300. The first release layer 400 is arranged between the battery cell 200 and the front glass 100, and the second release layer 500 is arranged between the battery cell 200 and the back plate 300. The first release layer 400 wraps the front side and the first side of the battery cell 200, and the second release layer 500 wraps the back side and the second side of the battery cell 200.

[0036] Based on the above design, the first peripheral side surface and the second peripheral side surface in this embodiment together constitute the complete peripheral side surface of the cell 200, so that the cell 200 in the photovoltaic module is completely wrapped by the first release layer 400 and the second release layer 500, that is, the front, back and peripheral side surfaces of the cell 200 are completely covered by the first release layer 400 and the second release layer 500, so that the front, back and peripheral side surfaces of the cell 200 will not be adhered. In this way, when the photovoltaic module is recycled later, the relevant operators can easily disassemble the cell 200, thereby reducing the difficulty of disassembling the photovoltaic module, improving work efficiency and saving costs.

[0037] Compared with the prior art, the photovoltaic module in this embodiment has a simple structure. Through the provision of the first release layer 400 and the second release layer 500, the front, back and side surfaces of the battery cell 200 will not be adhered. In this way, when the photovoltaic module is recycled later, the relevant operators can easily disassemble the battery cell 200, thereby reducing the difficulty of disassembling the photovoltaic module, improving work efficiency and saving costs.

[0038] Specifically, the first release layer 400 has a release surface on both the side close to the cell 200 and the side away from the cell 200. The second release layer 500 has a release surface on both the side close to the cell 200 and the side away from the cell 200. In other words, both the first release layer 400 and the second release layer 500 in this embodiment are double-sided release layers. This reduces the processing cost of the first release layer 400 and the second release layer 500, facilitates processing, improves processing efficiency, and saves costs.

[0039] Optionally, the sides of the first release layer 400, the second release layer 500, the front glass 100 and the back panel 300 in this embodiment are all flush, thereby facilitating the packaging of the photovoltaic module and improving the stability and reliability of the photovoltaic module.

[0040] In order to ensure good adhesion between the first release layer 400 and the second release layer 500 and the battery cell 200 , the thickness of the first release layer 400 is 0.01 mm to 0.20 mm, and the thickness of the second release layer 500 is 0.01 mm to 0.20 mm.

[0041] Optionally, the first release layer 400 and the second release layer 500 have non-stick or low-stick properties, and their main components are usually silicone oil or other silicone-based compounds.

[0042] Optionally, the first release layer 400 and the second release layer 500 in this embodiment are each independently selected from one of polyethylene terephthalate film, biaxially oriented polypropylene film, polytetrafluoroethylene film, ethylene-tetrafluoroethylene copolymer film and fluorinated ethylene propylene copolymer film, preferably polyethylene terephthalate film.

[0043] In some optional embodiments, the backsheet 300 is a glass backsheet. In this case, the cell 200 is configured as a bifacial cell, thereby allowing both sides of the photovoltaic module to receive light, thereby improving the photovoltaic module's photoelectric conversion efficiency. When the photovoltaic module has a backsheet 300 (opaque), the cell 200 is a single-sided cell, and the back side of the photovoltaic module does not receive light. In other words, the back side of the photovoltaic module is opaque.

[0044] Example 2

[0045] like Figures 2 to 4 As shown, this embodiment provides a photovoltaic module. The main difference between this photovoltaic module and the first embodiment is that: in this embodiment, the side of the first release layer 400 close to the cell 200 is the release surface, and the side of the first release layer 400 away from the cell 200 is the bonding surface; the side of the second release layer 500 close to the cell 200 is the release surface, and the side of the second release layer 500 away from the cell 200 is the bonding surface. In other words, the first release layer 400 and the second release layer 500 in this embodiment are both single-sided release layers. This not only ensures that the first release layer 400 and the second release layer 500 do not adhere to the cell 200, but also ensures that the first release layer 400 and the second release layer 500 adhere to the front glass 100 and the second release layer 500 adhere to the back sheet 300. This improves the stability and reliability of the photovoltaic module, prevents displacement such as slippage of the front glass 100 and the back sheet 300, and enhances the strength of the photovoltaic module.

[0046] Furthermore, in this embodiment, the first release layer 400 has a first release area 410 and a first non-release area 420 on a side close to the battery cell 200, and the second release layer 500 has a second release area 510 and a second non-release area 520 on a side close to the battery cell 200. The first release area 410 wraps the front and first side surfaces of the battery cell 200, and the second release area 510 wraps the back and second side surfaces of the battery cell 200, and the first non-release area 420 and the second non-release area 520 are bonded to each other.

[0047] This embodiment does not specifically limit the shapes of the first release area 410, the second release area 510, the first non-release area 420, and the second non-release area 520. For example, the shapes of the first release area 410 and the second release area 510 can be graphically designed according to the shape of the battery cell 200. Preferably, the first release area 410 and the second release area 510 are both groove-shaped, so that the first release area 410 and the second release area 510 are jointly enclosed to form a storage space for accommodating the battery cell 200, and the storage space can fully wrap the front, back and side surfaces of the battery cell 200. Preferably, the first non-release area 420 and the second non-release area 520 in this embodiment are both planar. This facilitates the bonding connection between the first non-release area 420 and the second non-release area 520, thereby achieving sealing of the battery cell 200, preventing external moisture from entering the storage space and contaminating the battery cell 200, and extending the service life of the photovoltaic module.

[0048] Furthermore, in this embodiment, the first release area 410 and the second release area 510 are arranged opposite to each other, and the first non-release area 420 and the second non-release area 520 are arranged opposite to each other, thereby improving the reliability of the first release area 410 and the second release area 510 in wrapping the battery cell 200, and improving the reliability of the adhesion between the first non-release area 420 and the second non-release area 520, and at the same time, it is also beneficial to the processing and manufacturing of the first release layer 400 and the second release layer 500, saving costs.

[0049] The remaining structures of the photovoltaic module in this embodiment are the same as those in the first embodiment and will not be described in detail here.

[0050] Example 3

[0051] like Figures 5 and 6As shown, this embodiment provides a photovoltaic module. The main differences between this photovoltaic module and the first embodiment are as follows: the photovoltaic module in this embodiment further includes a positive adhesive film 600 and a back adhesive film 700. The positive adhesive film 600 is located between the front glass 100 and the first release layer 400, and its two sides are respectively bonded to the front glass 100 and the first release layer 400; the back adhesive film 700 is located between the back panel 300 and the second release layer 500, and its two sides are respectively bonded to the back panel 300 and the second release layer 500. The provision of the positive adhesive film 600 and the back adhesive film 700 can improve the stability and reliability of the attachment between the front glass 100 and the first release layer 400, and improve the stability and reliability of the attachment between the back panel 300 and the second release layer 500, thereby reducing the risk of slippage and misalignment of the front glass 100 or the back panel 300.

[0052] At the same time, due to the setting of the first release layer 400 and the second release layer 500, there will be no contact between the adhesive film (positive adhesive film 600 and back adhesive film 700) and the battery cell 200 during the subsequent photovoltaic module lamination process, which is conducive to disassembling the battery cell 200 when recycling the photovoltaic module in the later stage, reducing the difficulty of disassembling the photovoltaic module, improving work efficiency and saving costs.

[0053] Furthermore, in this embodiment, the sides of the front glass 100, the positive adhesive film 600, the first release layer 400, the second release layer 500, the back adhesive film 700, and the back sheet 300 are all flush, facilitating the packaging of the photovoltaic module and improving the stability and reliability of the photovoltaic module. This also increases the attachment area between the positive adhesive film 600 and the front glass 100, and the attachment area between the back adhesive film 700 and the back sheet 300, thereby improving the stability and reliability of the photovoltaic module.

[0054] Optionally, the positive adhesive film 600 and the back adhesive film 700 in this embodiment are each independently selected from one of an ethylene-vinyl acetate adhesive layer, an ethylene-octene copolymer adhesive layer, and a co-extruded composite adhesive layer of ethylene-vinyl acetate and ethylene-octene copolymer. Preferably, when both the positive adhesive film 600 and the back adhesive film 700 are ethylene-vinyl acetate adhesive layers, better bonding is achieved.

[0055] Optionally, in order to achieve a better adhesion effect, the thickness of the positive adhesive film 600 is 0.2 mm to 0.8 mm, and the thickness of the back adhesive film 700 is 0.2 mm to 0.8 mm.

[0056] It is understandable that Figure 5 for Figure 1 (Example 1) progressive solution, Figure 6 for Figure 2 (Example 2) progressive solution.

[0057] The remaining structures of the photovoltaic module in this embodiment are the same as those in the first embodiment and will not be described in detail here.

[0058] Obviously, the above are only preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, and substitutions are possible for those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments and may include many other equivalent embodiments without departing from the scope of the present invention. The scope of the present invention is determined by the scope of the appended claims.

[0059] Note that throughout this specification, references to terms such as "some embodiments" and "other embodiments" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. Throughout this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Claims

1. A photovoltaic module, characterized in that The invention comprises a front glass (100), a first release layer (400), a battery cell (200), a second release layer (500) and a back plate (300), wherein the first release layer (400) is arranged between the battery cell (200) and the front glass (100), the second release layer (500) is arranged between the battery cell (200) and the back plate (300), the first release layer (400) wraps the front side and the first peripheral side of the battery cell (200), and the second release layer (500) wraps the back side and the second peripheral side of the battery cell (200).

2. The photovoltaic module according to claim 1, characterized in that The first release layer (400) has a side close to the battery cell (200) and a side away from the battery cell (200) that are both release surfaces, and the second release layer (500) has a side close to the battery cell (200) and a side away from the battery cell (200) that are both release surfaces.

3. The photovoltaic module according to claim 1, characterized in that The side of the first release layer (400) close to the battery cell (200) is a release surface, and the side of the first release layer (400) away from the battery cell (200) is an adhesive surface; the side of the second release layer (500) close to the battery cell (200) is a release surface, and the side of the second release layer (500) away from the battery cell (200) is an adhesive surface.

4. The photovoltaic module according to claim 3, characterized in that The first release layer (400) has a first release area (410) and a first non-release area (420) on a side close to the battery cell (200), and the second release layer (500) has a second release area (510) and a second non-release area (520) on a side close to the battery cell (200). The first release area (410) wraps the front and first side surfaces of the battery cell (200), and the second release area (510) wraps the back and second side surfaces of the battery cell (200). The first non-release area (420) and the second non-release area (520) are bonded to each other.

5. The photovoltaic module according to claim 4, characterized in that: The first release area (410) and the second release area (510) are arranged opposite to each other, and the first non-release area (420) and the second non-release area (520) are arranged opposite to each other.

6. The photovoltaic module according to claim 4, characterized in that: The first release area (410) and the second release area (510) are jointly enclosed to form an accommodating space for accommodating the battery cell (200).

7. The photovoltaic module according to claim 4, characterized in that: The side edges of the front glass (100), the side edges of the first release layer (400), the side edges of the second release layer (500) and the side edges of the back plate (300) are all flush.

8. The photovoltaic module according to claim 1, characterized in that The photovoltaic module further comprises a positive adhesive film (600) and a back adhesive film (700), wherein the positive adhesive film (600) is located between the front glass (100) and the first release layer (400), and the two sides of the positive adhesive film (600) are respectively bonded to the front glass (100) and the first release layer (400); the back adhesive film (700) is located between the back plate (300) and the second release layer (500), and the two sides of the back adhesive film (700) are respectively bonded to the back plate (300) and the second release layer (500).

9. The photovoltaic module according to claim 8, characterized in that: The side edges of the front glass (100), the side edges of the positive adhesive film (600), the side edges of the first release layer (400), the side edges of the second release layer (500), the side edges of the back adhesive film (700) and the side edges of the back panel (300) are all flush.

10. The photovoltaic module according to any one of claims 1 to 9, characterized in that: The battery cell (200) is a double-sided battery, and the back plate (300) is a glass back plate.

Images