Novel solar cell module

Abstract

The utility model provides a novel solar cell module. The novel solar cell module comprises a solar cell sheet; the back adhesive film and the back plate glass are sequentially laminated on one side of the solar cell; the front adhesive film and the front plate glass are sequentially laminated on the other side of the solar cell; wherein the size of the back plate glass is larger than that of the back adhesive film, and the size of the front plate glass is larger than that of the front adhesive film, so that a gap is formed between the back plate glass and the front plate glass; the butyl rubber is arranged in the gap; and the edge sealing adhesive tape containing the aluminum foil comprises the aluminum foil and an adhesive, and the adhesive is used for bonding the aluminum foil with the front plate glass, the butyl rubber and the back plate glass. Through the processing scheme of the utility model, water vapor can be prevented from entering the assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of solar photovoltaic technology, in particular to a novel solar cell assembly. Background Art

[0002] Solar cells are devices that directly convert light energy into electrical energy through the photoelectric effect or photochemical effect. Among them, heterojunction solar cells are called the new generation of solar cells because of their high bifaciality, high efficiency and simple preparation process.

[0003] At present, the existing heterojunction solar cell modules usually have the following structures: photovoltaic glass, adhesive film, butyl rubber, solar panels, adhesive film, back glass, etc., which are mainly encapsulated by adhesive film and butyl rubber to isolate air and moisture. However, the adhesive film has poor viscosity, and there is a possibility that the adhesive film will come into contact with the external environment through the butyl rubber. The adhesive film is mostly made of EVA or POE and other materials, which have poor water-proof performance, which will cause water vapor to enter the module and come into contact with the battery cell, thereby affecting the battery performance. Utility Model Content

[0004] In view of this, the utility model provides a novel solar cell assembly, which at least partially solves the problems existing in the prior art.

[0005] The utility model discloses a novel solar cell assembly, comprising:

[0006] Solar cells;

[0007] A back adhesive film and a back plate glass sequentially laminated on one side of the solar cell;

[0008] A front adhesive film and a front glass laminated in sequence on the other side of the solar cell;

[0009] Wherein, the size of the back plate glass is larger than the size of the back adhesive film and the size of the front plate glass is larger than the size of the front adhesive film, so as to form a gap between the back plate glass and the front plate glass;

[0010] Butyl rubber is disposed in the gap; and

[0011] An edge-sealing tape containing aluminum foil comprises aluminum foil and an adhesive, wherein the adhesive is used to bond the aluminum foil to the front plate glass, butyl adhesive and back plate glass.

[0012] In a specific embodiment, the edge-sealing tape containing aluminum foil is U-shaped, and two sides of the U-shaped edge-sealing tape containing aluminum foil are in contact with the outer sides of the front plate glass and the back plate glass respectively.

[0013] In a specific embodiment, the width of the edge-sealing tape containing aluminum foil in contact with the outer sides of the front glass and the back glass is 25 to 35 mm.

[0014] In a specific embodiment, the outer side of the edge-sealing tape containing aluminum foil is provided with a texture.

[0015] In a specific embodiment, the solar cell further includes positive and negative electrodes, and electrode lead-out strips are welded to the positive and negative electrodes.

[0016] In a specific embodiment, the electrode lead-out tape is led out through a hole on the back panel glass.

[0017] In a specific embodiment, the back panel glass is semi-tempered glass.

[0018] In a specific embodiment, the front glass is ultra-white tempered glass.

[0019] In a specific embodiment, the back adhesive film and the front adhesive film are any one of the following: ethylene-vinyl acetate copolymer EVA adhesive film, polyvinyl butyral PVB adhesive film, polyolefin elastomer POE adhesive film or expanded polyethylene EPE adhesive film.

[0020] The solar cell assembly of the utility model comprises: a solar cell; a back adhesive film and a back plate glass sequentially stacked on one side of the solar cell; a front adhesive film and a front plate glass sequentially stacked on the other side of the solar cell; wherein the size of the back plate glass is larger than the size of the back adhesive film and the size of the front plate glass is larger than the size of the front adhesive film, so as to form a gap between the back plate glass and the front plate glass; butyl adhesive, which is arranged in the gap; and an edge-sealing tape containing aluminum foil, wherein the edge-sealing tape containing aluminum foil comprises aluminum foil and an adhesive, and the adhesive is used to bond the aluminum foil to the front plate glass, the butyl adhesive and the back plate glass. Through the treatment scheme of the utility model, water vapor can be prevented from entering the assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solution of the present invention, the following briefly introduces the drawings required for use in the embodiments. 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 these drawings without creative work.

[0022] Figure 1 The utility model provides Figure 1 It is a schematic structural diagram of a solar cell assembly of the utility model.

[0023] Reference numerals:

[0024] 1- back glass, 2- solar cell, 3- back adhesive film, 4- butyl adhesive, 5- front adhesive film, 6- front glass, 7- edge sealing tape containing aluminum foil. DETAILED DESCRIPTION

[0025] The utility model is described in detail below in conjunction with the accompanying drawings.

[0026] The following describes the implementation methods of the present invention through specific concrete examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. The present invention can also be implemented or applied through other different specific implementation methods, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0027] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the utility model, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number of aspects described herein can be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this device and / or practice this method.

[0028] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention. The drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed at will, and the component layout may also be more complicated.

[0029] Additionally, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the aspects described may be practiced without these specific details.

[0030] As mentioned above, the traditional heterojunction solar cell module has the problem that water vapor easily enters the module, which hinders the performance and stability of the module. Water vapor mainly enters through the holes occupied by EVA and other adhesive films leaked from the butyl adhesive. In order to prevent water vapor from entering the battery module and better solve the sealing problem of the battery module, the utility model designs a heterojunction solar cell module containing aluminum foil. After the heterojunction solar cell is encapsulated with adhesive film, butyl adhesive and glass, the edge of the module is wrapped with an edge sealing tape containing aluminum foil. Aluminum foil has excellent water-proof performance. Wrapping aluminum foil with high water-blocking performance around butyl adhesive can effectively prevent water vapor from entering due to insufficient viscosity of butyl adhesive, exposure of the adhesive film to air, etc.

[0031] Next, the solar cell assembly of the present invention will be described in detail with reference to the accompanying drawings. Figure 1 This is a schematic diagram of the structure of a solar cell module of the utility model. In the figure, reference numeral 1 indicates a back glass panel, reference numeral 2 indicates a solar cell sheet, reference numeral 3 indicates a back adhesive film, reference numeral 4 indicates butyl adhesive, reference numeral 5 indicates a front adhesive film, reference numeral 6 indicates a front glass panel, and reference numeral 7 indicates an edge-sealing tape containing aluminum foil.

[0032] In the utility model, the back glass 1 can be semi-tempered glass, the solar cell 2 can be a heterojunction cell, the back film 3 can be made of ethylene-vinyl acetate copolymer EVA, polyvinyl butyral PVB, polyolefin elastomer POE or expanded polyethylene EPE film, the front film 5 is similar to the back film 3, and can also be made of EVA, PVB, POE or EPE film, or can also be made of light transfer film, the front glass 6 can be made of ultra-white tempered glass, and the adhesive of the edge sealing tape 7 containing aluminum foil can be glass glue, AB glue, UV glue, etc.

[0033] In the present invention, in order to prevent water vapor from entering the battery assembly and better solve the sealing problem of the battery assembly, the present invention designs a heterojunction solar cell assembly including an edge-sealing tape 7 containing aluminum foil. After the heterojunction solar cell is encapsulated with a film, butyl adhesive and glass, the edge of the assembly is wrapped with the edge-sealing tape 7 containing aluminum foil for encapsulation.

[0034] Specifically, the solar cell assembly of the utility model includes a solar cell 2; a back adhesive film 3 and a back glass 1 sequentially stacked on one side of the solar cell 2; a front adhesive film 5 and a front glass 6 sequentially stacked on the other side of the solar cell 2; wherein the size of the back glass 1 is larger than the size of the back adhesive film 3 and the size of the front glass 6 is larger than the size of the front adhesive film 5, so as to form a gap between the back glass 1 and the front glass 6; butyl adhesive 4 is arranged in the gap; and an edge sealing tape 7 containing aluminum foil, wherein the edge sealing tape 7 containing aluminum foil includes aluminum foil and an adhesive, and the adhesive is used to bond the aluminum foil to the front glass 6, the butyl adhesive 4 and the back glass 1.

[0035] In other words, in the present invention, the solar cell 2 is encapsulated between the front glass 6 and the back glass 1 by the front film 3 and the back film 5, the front film 3 and the back film 5 cover the solar cell 2, and the size of the front film 3 and the back film 5 is smaller than the front glass 6 and the back glass 1.

[0036] In addition, in the present invention, the gap between the front glass 6 and the back glass 1 is filled with butyl rubber 4. At this time, the packaging method of the battery assembly is preferably a laminator, and other equipment alternatives such as autoclaves can be used.

[0037] In addition, as shown in the figure, in the present invention, an edge-sealing tape 7 containing aluminum foil is wound around the outside of the front glass 6, butyl rubber 4 and the back glass 1. The edge-sealing tape 7 containing aluminum foil contains aluminum foil and adhesive, and the adhesive serves to bond the aluminum foil to the front glass 6, butyl rubber 4 and the back glass 1. Further, the edge-sealing tape 7 containing aluminum foil is U-shaped, and the two sides of the U-shaped edge-sealing tape 7 containing aluminum foil are in contact with the outside of the front glass 6 and the back glass 1, respectively, and the width of the edge-sealing tape 7 containing aluminum foil in contact with the outside of the front glass 6 and the back glass 1 is 25 to 35 mm. This is because when the edge-sealing tape 7 containing aluminum foil is pasted on the glass plate, the pasting range should not cover the internal battery cells, and the wider the coverage range is, the better when the battery cells are not covered. If it is too wide, it is easy to block the battery cells, and if it is too narrow, it will not be firmly pasted.

[0038] In addition, the outer side of the edge-sealing tape 7 containing aluminum foil of the present invention can be treated with anti-skid treatment to increase the anti-skid performance of the component. For example, the outer side of the edge-sealing tape 7 containing aluminum foil can be provided with texture to increase the anti-skid performance.

[0039] The utility model improves the protection through double-layer water-blocking performance. Specifically, butyl rubber 4 is applied between the front glass 6 and the back glass 1, and the butyl rubber 4 has good water-blocking performance. In addition, an edge sealing tape 7 containing aluminum foil is wrapped around the outside of the front glass 6, the butyl rubber 4 and the back glass 1, and the high water-blocking performance of the aluminum foil is utilized to prevent water vapor from entering the component due to insufficient viscosity of the butyl rubber 4, exposure of the adhesive film to air, etc.

[0040] During assembly, the electrode lead-out tape is welded on the positive and negative electrodes of the solar cell 2, and then the back adhesive film 3 and the back glass 1 are sequentially stacked on the back of the solar cell 2, and the front adhesive film 5 and the front glass 6 are sequentially stacked on the front of the solar cell 2, wherein the electrode lead-out tape is led out from the hole on the back glass 1, and since the size of the back adhesive film 3 and the back adhesive film 5 is smaller than the size of the front glass 6 and the back glass 1, a gap is formed between the front glass 6 and the back glass 1, and at this time, the gap between the front glass 6 and the back glass 1 is filled with butyl rubber 4 to form a seal, and then placed in an autoclave for high-temperature and high-pressure packaging. After completing the high-temperature and high-pressure packaging, the edge sealing tape 7 containing aluminum foil is finally wrapped around the edge of the component to form a high-water-resistance packaging component.

[0041] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A new type of solar cell module, characterized in that: include: Solar cell (2); A back adhesive film (3) and a back plate glass (1) sequentially laminated on one side of the solar cell sheet (2); A front adhesive film (5) and a front glass plate (6) sequentially laminated on the other side of the solar cell sheet (2); The size of the back glass (1) is larger than the size of the back adhesive film (3), and the size of the front glass (6) is larger than the size of the front adhesive film (5), so as to form a gap between the back glass (1) and the front glass (6); Butyl rubber (4) is disposed in the gap; and An edge-sealing tape (7) containing aluminum foil, the edge-sealing tape (7) containing aluminum foil comprising aluminum foil and an adhesive, the adhesive being used to bond the aluminum foil to the front plate glass (6), butyl adhesive (4) and back plate glass (1).

2. The novel solar cell assembly according to claim 1 is characterized in that: The edge sealing tape (7) containing aluminum foil is U-shaped, and two sides of the U-shaped edge sealing tape (7) containing aluminum foil are in contact with the outer sides of the front plate glass (6) and the back plate glass (1) respectively.

3. The novel solar cell assembly according to claim 2 is characterized in that: The width of the edge-sealing tape (7) containing aluminum foil in contact with the outer sides of the front plate glass (6) and the back plate glass (1) is 25 to 35 mm.

4. The novel solar cell assembly according to claim 1 is characterized in that: The outer side of the edge-sealing tape (7) containing aluminum foil is provided with a texture.

5. The novel solar cell assembly according to claim 1 is characterized in that: The solar cell sheet (2) further comprises positive and negative electrodes, and electrode lead-out belts are welded to the positive and negative electrodes.

6. The novel solar cell assembly according to claim 5 is characterized in that: The electrode lead-out belt is led out through the hole on the back panel glass (1).

7. The novel solar cell assembly according to claim 1 is characterized in that: The back panel glass (1) is semi-tempered glass.

8. The novel solar cell assembly according to claim 1 is characterized in that: The front plate glass (6) is ultra-white tempered glass.

9. The novel solar cell assembly according to claim 1, characterized in that: The back adhesive film (3) and the front adhesive film (5) are any one of the following: ethylene-vinyl acetate copolymer EVA adhesive film, polyvinyl butyral PVB adhesive film, polyolefin elastomer POE adhesive film or expanded polyethylene EPE adhesive film.

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