Laminated structure for effectively protecting photovoltaic cell assembly

Abstract

The utility model discloses a laminated structure for effectively protecting a photovoltaic cell assembly, which relates to the application of an optical functional sheet in the field of flexible photovoltaic assemblies and comprises a flexible photovoltaic assembly. The flexible photovoltaic assembly comprises a light flexible backboard, a POE adhesive layer, a photovoltaic cell piece, a first POE adhesive layer, an optical function piece, a second POE adhesive layer and a fluorine film which are sequentially stacked, and through the design of the optical function piece, especially the first punching hole and the second punching hole formed in the optical function piece, the surface area of the optical function piece is increased, and the light flexible backboard, the POE adhesive layer, the photovoltaic cell piece, the first POE adhesive layer, the second POE adhesive layer and the fluorine film are arranged in a stacked mode. Compared with the prior art, the light transmittance of the material is remarkably improved, more light rays can penetrate through and reach a photovoltaic cell piece, so that the light conversion efficiency is improved, meanwhile, the stripping force of the optical function piece is enhanced through the punching design, the first POE adhesive layer and the second POE adhesive layer are bonded into an integral structure through punching, and the protection effect on the photovoltaic cell piece is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the application of optical function sheet in the field of flexible photovoltaic module, concretely is a kind of effectively protects photovoltaic cell piece assembly laminated structure. BACKGROUND

[0002] Photovoltaic cell piece refers to the semiconductor material assembly that can convert sunlight into electric energy, is one of the key components of solar photovoltaic power generation system, in the working process of photovoltaic cell piece, the energy of light energy is converted into electric energy, and optical function sheet is a kind of lens added with special function on the basis of traditional optical lens, for increasing light transmittance, improve the use effect of photovoltaic cell piece.

[0003] Patent document CN205092250U discloses a kind of photovoltaic cell piece and photovoltaic module, it discloses "the utility model provides a kind of photovoltaic cell piece and photovoltaic module, it includes silicon chip, back electrode located the back of silicon chip and the aluminum back field covered in the four corners of the back electrode, the thickness of the aluminum back field is greater than the thickness of the back electrode, and the aluminum back field is provided with the junction portion of the junction of the back electrode, the junction portion is provided with the junction surface extending to the surface of the back electrode.The utility model improves the structure of the junction of the aluminum back field and the back electrode of photovoltaic cell piece back, so that the aluminum back field and the back electrode can be smoothly transitioned, reduce the generation of false welding, reduce the adverse effects of the height difference between the two, can improve the welding effect of the back electrode and the welding strip, while reducing the amount of back silver, reduce production cost".

[0004] However, the photovoltaic cell piece and photovoltaic module of the above-mentioned disclosure mainly consider how to reduce the amount of epoxy material, increase the service life of the assembly, reduce the power generation cost, compared with the prior art, lack of protection for photovoltaic cell piece, long-term use will cause photovoltaic cell piece aging and conversion efficiency reduction technical problems.

[0005] The utility model improves the protection of photovoltaic cell piece, increases the anti-aging life of material, and improves the conversion efficiency.

[0006] Therefore, it is necessary to study an effective protection photovoltaic cell piece assembly laminated structure, to improve the protection effect and conversion efficiency of the photovoltaic cell piece during use. UTILITY MODEL CONTENTS

[0007] The utility model aims at providing an effective protection photovoltaic cell piece assembly laminated structure to solve the technical problems raised in the above background.

[0008] To achieve the above object, the utility model provides the following technical scheme, an effective protection photovoltaic cell piece assembly laminated structure, including flexible photovoltaic assembly, its characterized in be: the flexible photovoltaic assembly includes lightweight flexible back sheet, POE mucilage layer, photovoltaic cell piece, first POE adhesive layer, optical function sheet, second POE adhesive layer and fluorine membrane that place in turn are superimposed,

[0009] The top of first POE adhesive layer is bonded with optical function sheet, the outside of optical function sheet is coated with silica gel coating, and the top of optical function sheet is bonded with second POE adhesive layer;

[0010] The inside of optical function sheet is provided with first punching and second punching at equal intervals by the way of film punching, and the arrangement of the punching enables first POE adhesive layer and second POE adhesive layer to be more closely bonded into an integral structure.

[0011] The first punching and second punching provided on the optical function sheet are used to increase the surface area of the optical function sheet and improve the light transmittance of the material, thereby further improving the light conversion efficiency of the thin-film photovoltaic panel and enhancing the peeling force of the optical function sheet.

[0012] Preferably, the flexible photovoltaic assembly is prepared by hot pressing forming process, and the hot pressing forming process is used to realize the close and stable bonding between the layers.

[0013] Preferably, the punching interval, size and shape of the optical function sheet can be flexibly adjusted according to specific application scenarios and performance requirements.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model discloses the design of optical function sheet, especially the first punching and second punching provided thereon, which not only increases the surface area of the optical function sheet, but also significantly improves the light transmittance of the material, is favorable for more light to penetrate and reach the photovoltaic cell piece, thereby improving the light conversion efficiency, and at the same time, the punching design also enhances the peeling force of the optical function sheet, and makes first POE adhesive layer and second POE adhesive layer stick into an integral structure through punching, thereby improving the protection effect on the photovoltaic cell piece.

[0016] The utility model prepares the flexible photovoltaic assembly by hot pressing forming process, ensures the close and stable bonding between the layers, thereby not only improving the overall strength of the assembly, but also reducing the risk of performance decline or failure caused by poor bonding, and achieving the effect of improving the service life.

[0017] The punching interval, size and shape of the optical functional sheet can be flexibly adjusted according to specific application scenes and performance requirements, so that the photovoltaic cell piece assembly can be applicable to different application scenes and performance requirements, and the applicability and market competitiveness of the assembly can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a whole structure schematic view of the utility model.

[0019] In the figure: 1, lightweight flexible backboard; 2, POE adhesive layer; 3, photovoltaic cell piece; 4, first POE adhesive layer; 5, optical functional sheet; 6, second POE adhesive layer; 7, fluorine film. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0021] In the description of the utility model, it should be explained that the directions or position relations indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like are the directions or position relations shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and are not indicative or suggestive of the devices or elements indicated must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicative or suggestive of relative importance.

[0022] In the description of the utility model, it should be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "connection" and the like should be broadly understood, for example, "connection" can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0023] Embodiment 1: please refer to Figure 1The present invention provides an embodiment of a laminated structure for effectively protecting a photovoltaic cell assembly, comprising a flexible photovoltaic assembly, wherein the flexible photovoltaic assembly comprises a lightweight flexible backsheet 1, a POE adhesive layer 2, a photovoltaic cell 3, a first POE adhesive layer 4, an optical functional sheet 5, a second POE adhesive layer 6, and a fluorine film 7 stacked in sequence;

[0024] An optical functional sheet 5 is bonded and installed on the top of the first POE adhesive layer 4. The outside of the optical functional sheet 5 is coated with a silicone coating. A second POE adhesive layer 6 is bonded and installed on the top of the optical functional sheet 5.

[0025] The interior of the optical functional sheet 5 is provided with first and second punched holes at equal intervals by punching a thin film. The arrangement of these punched holes enables the first POE adhesive layer 4 and the second POE adhesive layer 6 to be more tightly bonded into an integral structure.

[0026] The first punching hole and the second punching hole formed on the optical functional sheet 5 are used to increase the surface area of ​​the optical functional sheet 5 and improve the light transmittance of the material, thereby further improving the light conversion efficiency of the thin-film photovoltaic panel and enhancing the peeling force of the optical functional sheet 5;

[0027] Furthermore, the design of the optical functional sheet 5, especially the first and second punched holes thereon, not only increases the surface area of ​​the optical functional sheet 5, but also significantly improves the light transmittance of the material, which helps more light penetrate and reach the photovoltaic cell 3, thereby improving the light conversion efficiency. At the same time, the punching design also enhances the peeling force of the optical functional sheet 5, and enables the first POE adhesive layer 4 and the second POE adhesive layer 6 to be bonded into an integral structure through the punching, thereby improving the protection effect of the photovoltaic cell 3.

[0028] Example 2: Please refer to Figure 1 In one embodiment of the present invention, a flexible photovoltaic module is prepared by a hot pressing process, and the hot pressing process is used to achieve tight and stable adhesion between the layers;

[0029] Furthermore, by adopting the hot pressing molding process to prepare flexible photovoltaic modules, tight and stable adhesion between the layers is ensured, which not only improves the overall strength of the module, but also reduces the risk of performance degradation or failure due to poor adhesion, thereby achieving the effect of increasing service life.

[0030] Example 3: Please refer to Figure 1 In an embodiment provided by the present invention, the punching spacing, size and shape of the optical functional sheet 5 can be flexibly adjusted according to specific application scenarios and performance requirements;

[0031] Further, the punching interval, size and shape of the optical functional sheet 5 can be flexibly adjusted according to specific application scenarios and performance requirements, which not only enables the photovoltaic cell sheet 3 assembly to be applicable to different application scenarios and performance requirements, but also improves the applicability and market competitiveness of the assembly.

[0032] The working principle is that, through the design of the optical functional sheet 5, especially the first punching hole and the second punching hole opened thereon, not only the surface area of the optical functional sheet 5 is increased, but also the light transmittance of the material is significantly improved, which is conducive to more light penetrating and reaching the photovoltaic cell sheet 3, thereby improving the light conversion efficiency. At the same time, the punching design also enhances the peeling force of the optical functional sheet 5, and makes the first POE adhesive layer 4 and the second POE adhesive layer 6 adhere to an integral structure through the punching, thereby improving the protection effect on the photovoltaic cell sheet 3. The flexible photovoltaic assembly prepared by adopting the hot-pressing forming process ensures the close and stable adhesion between the layers, thereby not only improving the overall strength of the assembly, but also reducing the risk of performance degradation or failure caused by poor adhesion, achieving the effect of improving the service life. The punching interval, size and shape of the optical functional sheet 5 can be flexibly adjusted according to specific application scenarios and performance requirements, which not only enables the photovoltaic cell sheet 3 assembly to be applicable to different application scenarios and performance requirements, but also improves the applicability and market competitiveness of the assembly.

[0033] It is apparent for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all aspects as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and range of equivalent elements of the claims are intended to be embraced in the present application. Any reference signs in the claims should not be considered as limiting the claims involved.

Claims

1. A laminated structure for effectively protecting a photovoltaic cell assembly, comprising a flexible photovoltaic assembly, characterized in that: The flexible photovoltaic assembly comprises a lightweight flexible backsheet (1), a POE adhesive layer (2), a photovoltaic cell sheet (3), a first POE adhesive layer (4), an optical functional sheet (5), a second POE adhesive layer (6), and a fluorine film (7) which are stacked in sequence; An optical functional sheet (5) is adhesively mounted on the top of the first POE adhesive layer (4), the outside of the optical functional sheet (5) is coated with a silicone coating, and a second POE adhesive layer (6) is adhesively mounted on the top of the optical functional sheet (5); The interior of the optical functional sheet (5) is provided with first punched holes and second punched holes at equal intervals by punching a thin film, and the arrangement of these punched holes enables the first POE adhesive layer (4) and the second POE adhesive layer (6) to be more tightly bonded into an integral structure; The first punching hole and the second punching hole formed on the optical functional sheet (5) are used to increase the surface area of ​​the optical functional sheet (5) and to improve the light transmittance of the material, thereby further improving the light conversion efficiency of the thin-film photovoltaic panel and enhancing the peeling force of the optical functional sheet (5).

2. The laminated structure for effectively protecting photovoltaic cell modules according to claim 1, characterized in that: The flexible photovoltaic module is prepared by a hot pressing process, and the hot pressing process is used to achieve tight and stable adhesion between the layers.

3. The laminated structure for effectively protecting photovoltaic cell modules according to claim 1, characterized in that: The punching spacing, size and shape of the optical functional sheet (5) can be flexibly adjusted according to specific application scenarios and performance requirements.

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