CN219085989U

CN219085989U - Gap film for photovoltaic module

Info

Publication number: CN219085989U
Application number: CN202320035391.5U
Authority: CN
Inventors: 易利华; 文武
Original assignee: Guangdong Sunrui New Material Co ltd
Current assignee: Guangdong Sunrui New Material Co ltd
Priority date: 2023-01-06
Filing date: 2023-01-06
Publication date: 2023-05-26
Anticipated expiration: 2033-01-06

Abstract

The utility model provides a gap film for a photovoltaic module, which comprises the following components: the utility model provides a be applied to interval synergistic material body between photovoltaic module's the battery piece, it includes basic rete and concave prism structural layer, white high reflectivity coating and EVA resin adhesive linkage, concave prism structural layer includes the line of integrated into one piece on basic rete side and locates the concave prism aluminizing reflection surface layer on the line was kept away from basic rete side, the line is formed by a plurality of triangular prisms of arranging side by side, white high reflectivity coating is located on the another side of basic rete. According to the gap film for the photovoltaic module, provided by the utility model, under the action of the triangular prism, most of solar rays are reflected on the side surface of the triangular prism when the solar rays are incident on the surface of the gap film, and then are concentrated and reflected to the photovoltaic power generation area, and meanwhile, a small part of the solar rays are directly reflected to the photovoltaic power generation area through the surface of the gap film, so that the light energy utilization efficiency is effectively improved, the light energy waste is reduced, and the power generation efficiency of the photovoltaic power generation plate is improved.

Description

Gap film for photovoltaic module

Technical Field

The utility model relates to the technical field of photovoltaic cell manufacturing, in particular to a gap film for a photovoltaic module.

Background

Solar cells, also known as photovoltaic cells, are photovoltaic modules that utilize the conversion of light energy to produce electrical energy. The solar photovoltaic module includes a plurality of photovoltaic module cells, and the photovoltaic module cells generate photovoltaic power by using sunlight. The solar module is characterized in that gaps are inevitably formed among the plurality of photovoltaic module battery pieces, solar light irradiates on the gaps and cannot generate photovoltaic power, so that the effective area of the solar photovoltaic module is reduced, and the photoelectric efficiency is reduced. In addition, when sunlight directly irradiates the surface of the gap, the surface of the base material at the gap can directly reflect the sunlight, and the sunlight cannot be utilized by the photovoltaic module cell, so that the waste of light energy is directly caused, and the photoelectric efficiency is further reduced.

In order to reduce the light energy waste caused by directly reflecting light and increase the effective area of the solar photovoltaic module, the light energy entering the gaps between the photovoltaic module cells needs to be utilized, and the utilization efficiency of the light energy is improved. The existing main solution is that a reflecting film is directly stuck to a gap of a photovoltaic module cell, a reflecting surface which is inclined relative to a vertical surface is arranged on the reflecting film, and sunlight is incident on the reflecting surface of the reflecting film, so that the propagation direction can be changed, and the sunlight is obliquely projected onto photovoltaic glass, and is indirectly reflected to the photovoltaic module cell by the photovoltaic glass to be utilized.

However, the reflection surfaces of the conventional reflection films are all planar, for example, a reflection film of a photovoltaic module disclosed in chinese patent No. CN2016112018221 has a triangular prism as a reflection structure, and the parallel light entering the reflection film will be reflected into parallel light by using the flat side of the triangular prism as the reflection surface. The planar reflective surface is prone to direct reflection of some light and has low reflected parallel light intensity and energy, and thus low photovoltaic power generation efficiency, relative to direct light directly irradiated to the photovoltaic power generation area.

For this purpose, a gap film for a photovoltaic module is proposed.

Disclosure of Invention

The utility model aims to solve the problems in the background art and provides a gap film for a photovoltaic module.

The specific technical scheme is as follows:

a gap film for a photovoltaic module, comprising:

be applied to clearance membrane body for photovoltaic module between the photovoltaic cell subassembly, it includes basic rete and concave prism structural layer, white high reflectivity coating and EVA resin adhesive linkage, concave prism structural layer including integrated into one piece in line on the basic rete side and locate the line is kept away from concave prism aluminizing reflection surface layer on the basic rete side, the line is formed by a plurality of triangular prisms of arranging side by side, white high reflectivity coating is located on the another side of basic rete, EVA resin adhesive linkage bonds on the white high reflectivity coating is kept away from on the side of basic rete, wherein:

the adjacent two triangular prisms are in clearance-free arrangement with prismatic surfaces of one side face of the base film layer, all the triangular prisms are arranged in parallel, an included angle between each triangular prism and the trend of the base film layer is 72 degrees, and an included angle between each triangular prism and the horizontal direction is 18 degrees.

The above-mentioned clearance membrane for photovoltaic module, wherein: the included angle between two adjacent triangular prisms is 120 degrees.

The above-mentioned clearance membrane for photovoltaic module, wherein: the width of the bottom surface of the prism, which coincides with one side surface of the base film layer, is 25um.

The above-mentioned clearance membrane for photovoltaic module, wherein: the triangular prism is 120 degrees away from one corner of the base film layer.

The above-mentioned clearance membrane for photovoltaic module, wherein: and one corner of the triangular prism far away from the base film layer is provided with a chamfer angle which is 20-45 degrees.

The above-mentioned clearance membrane for photovoltaic module, wherein: the base film layer is a PET film layer.

The above-mentioned clearance membrane for photovoltaic module, wherein: the height of the triangular prism is 10-18 um.

The utility model has the following beneficial effects:

according to the gap film for the photovoltaic module, provided by the utility model, under the action of the triangular prism, most of the gap film for the photovoltaic module can be reflected on the side surface of the triangular prism when solar rays are incident on the surface of the gap film for the photovoltaic module, and then the solar rays are concentrated and reflected to the photovoltaic power generation area, and meanwhile, a small part of the solar rays can be directly reflected to the photovoltaic power generation area through the surface of the gap film for the photovoltaic module, so that the light energy utilization efficiency is effectively improved, the light energy waste is reduced, and the power generation efficiency of a photovoltaic power generation plate is improved.

Drawings

Fig. 1 is a schematic structural diagram of a gap film for a photovoltaic module according to an embodiment of the present utility model

Fig. 2 is a schematic partial structure of a gap film for a photovoltaic module according to an embodiment of the present utility model;

FIG. 3 is a schematic cross-sectional view of the structure of A-A in FIG. 2;

FIG. 4 is a schematic view of the structure of FIG. 2, rotated 72 degrees along section A-A;

fig. 5 is a schematic diagram of a gap film for a photovoltaic module applied between photovoltaic modules according to an embodiment of the present utility model.

In the accompanying drawings:

1. a base film layer; 2. triangular prism; 3. a concave prism structure layer; 4. a white high reflectivity coating; 5. an EVA resin adhesive layer; 6. the concave prism aluminizes the reflecting surface layer.

Detailed Description

The technical scheme of the utility model is further described below by the specific embodiments with reference to the accompanying drawings.

Wherein the drawings are for illustrative purposes only and are shown in schematic, non-physical, and not intended to be limiting of the present patent; for the purpose of better illustrating embodiments of the utility model, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the size of the actual product; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numbers in the drawings of embodiments of the utility model correspond to the same or similar components; in the description of the present utility model, it should be understood that, if the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, only for convenience in describing the present utility model and simplifying the description, rather than indicating or implying that the apparatus or elements being referred to must have a specific orientation, be constructed and operated in a specific orientation, so that the terms describing the positional relationships in the drawings are merely for exemplary illustration and should not be construed as limiting the present patent, and that the specific meaning of the terms described above may be understood by those of ordinary skill in the art according to specific circumstances.

In the description of the present utility model, unless explicitly stated and limited otherwise, the term "coupled" or the like should be interpreted broadly, as it may be fixedly coupled, detachably coupled, or integrally formed, as indicating the relationship of components; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between the two parts or interaction relationship between the two parts. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Examples

The gap film for a photovoltaic module provided in this embodiment, as shown in fig. 1 to 4, includes: the gap film body for the photovoltaic module is applied between photovoltaic cell modules.

The gap film body for the photovoltaic module comprises a base film layer 1 and a concave prism structure layer 3, a white high-reflectivity coating 4 and an EVA resin bonding layer 5, wherein the white high-reflectivity coating 4 is made of white paint, the concave prism structure layer 3 comprises grains which are integrally formed on one side surface of the base film layer 1 and a concave prism aluminized reflection surface layer 6 which is arranged on one side surface of the base film layer 1, the grains are formed by a plurality of triangular prisms 2 which are arranged side by side, the white high-reflectivity coating 4 is arranged on the other side surface of the base film layer 1, the EVA resin bonding layer 5 is bonded on one side surface of the white high-reflectivity coating 4, which is far away from the base film layer 1, and the base film layer 1 is a PET film layer.

The concave prism structure layer 3 and the white high-reflectivity coating 4 are matched with each other, so that the solar light absorption capacity of the photovoltaic cell assembly can be effectively improved, the power generation efficiency is improved, and the EVA resin bonding layer 5 is convenient to attach the gap film to the back glass of the photovoltaic assembly in a hot-sticking mode.

Wherein, no gap exists between prismatic surfaces of two adjacent triangular prisms 2 and one side face of the base film layer 1, all the triangular prisms 2 are arranged in parallel, an included angle between the triangular prisms 2 and the film trend of the base film layer 1 is 72 degrees, and an included angle between the triangular prisms 2 and the horizontal direction is 18 degrees.

Wherein, the included angle between two adjacent triangular prisms 2 is 120 degrees.

Wherein, the width of the prism bottom surface of the triangular prism 2 overlapped with one side surface of the base film layer 1 is 25um.

Wherein, the triangular prism 2 is 120 degrees away from a corner of the base film layer 1.

Wherein, the triangular prism 2 is far away from the corner of the base film layer 1 and has a chamfer angle of 20-45 degrees.

Wherein the triangular prism 2 has a height of 6-15um.

Adopt above-mentioned technical scheme's clearance membrane for photovoltaic module comprises basic rete 1 and concave prism structural layer 3, white high reflectivity coating 4 and EVA resin adhesive linkage 5, concave prism structural layer 3 is by the line of integrated into one piece on basic rete 1 side and locate the line and keep away from concave prism aluminizing reflection surface course 6 on basic rete 1 side and constitute, and the line is formed by a plurality of triangular prisms 2 of arranging side by side, wherein, the clearance between the prismatic face of adjacent two triangular prisms 2 and a side coincidence of basic rete 1, and all triangular prisms 2 each other parallel arrangement, contained angle between triangular prism 2 and the membrane trend of basic rete 1 is 72, and contained angle between triangular prism 2 and the horizontal direction is 18, contained angle between two adjacent triangular prisms 2 is 120, triangular prism 2 and a side coincidence of basic rete 1's prism bottom surface width is 25um, triangular prism 2 is kept away from basic rete 1's 120, the triangular prism 2 has the chamfer, the chamfer is 45, the high of triangular prism 2 is 6 ~ 12um, the effect of solar energy is used to the photovoltaic power generation region at the side of three prisms 2, photovoltaic light energy is wasted at the side surface by the photovoltaic module when the effect of this solar energy is reduced, thereby, photovoltaic efficiency is improved to the photovoltaic power generation region is realized to the photovoltaic module, and photovoltaic light energy is greatly reduced, and the photovoltaic light energy is reflected to the side surface region is used to its photovoltaic power generation region.

As shown in fig. 5, a schematic diagram of the gap film for a photovoltaic module applied between photovoltaic cell modules is shown, and the principle of the gap film for a photovoltaic module to improve the power generation efficiency of a photovoltaic power generation panel can be seen according to fig. 5.

The foregoing is merely illustrative of the preferred embodiments of the present utility model and is not intended to limit the embodiments and scope of the present utility model, and it should be appreciated by those skilled in the art that equivalent substitutions and obvious variations may be made using the description and illustrations of the present utility model, and are intended to be included in the scope of the present utility model.

Claims

1. A gap film for a photovoltaic module, comprising:

2. The photovoltaic module gap film according to claim 1, wherein an included angle between two adjacent triangular prisms is 120 °.

3. The gap film for a photovoltaic module according to claim 2, wherein the triangular prism coincides with one side face of the base film layerBottomThe face width was 25um.

4. A photovoltaic module gap film according to claim 3, wherein the triangular prism is 120 ° away from a corner of the base film layer.

5. The gap film of claim 4, wherein a corner of the triangular prism remote from the base film layer has a chamfer angle of 20-45 °.

6. The gap film of claim 1, wherein the base film layer is a PET film layer.

7. The photovoltaic module gap film according to claim 5, wherein the triangular prism has a height of 6 to 15um.