CN211150573U

CN211150573U - Functional solar backboard

Info

Publication number: CN211150573U
Application number: CN201922202426.6U
Authority: CN
Inventors: 朱仁泽; 宋伟
Original assignee: Anhui Yake New Energy Technology Co ltd
Current assignee: Anhui Yake New Energy Technology Co ltd
Priority date: 2019-12-07
Filing date: 2019-12-07
Publication date: 2020-07-31
Anticipated expiration: 2029-12-07

Abstract

The utility model relates to a functional solar energy backplate, include the substrate layer, be located the outer protective layer and the inner protective layer of the relative both sides of substrate layer it is relative on the outer protective layer be provided with a plurality of recess on the side plane of substrate layer, be in through single face vacuum aluminizing it is relative on the outer protective layer the one side of substrate layer is formed with the vacuum aluminizing layer, the vacuum aluminizing layer evenly covers outer protective layer surface and in the recess, make the vacuum aluminizing layer is unsmooth type. Even aluminized films are formed on the plane of the outer protection layer and in the grooves, the concave-convex backboard outer layer structure enables the backboard outer layer structure to have excellent heat dissipation performance, meanwhile, the scattered light intensity is increased, a good diffusion effect is achieved, the reflectivity of the backboard is improved, and the power generation efficiency of the photovoltaic module is further improved.

Description

Functional solar backboard

Technical Field

The utility model relates to a solar photovoltaic cell backplate technical field, concretely relates to functional solar energy backplate.

Background

The solar photovoltaic industry is a new and strategic and pioneering industry in the world, and in recent half a year, the photovoltaic industry still keeps the landscape while subsidizing and backing up the slope, the policy gradually improves the industrial environment, and the photovoltaic power generation gradually goes toward the price balance. The conversion efficiency is an important parameter for solar cells, and generally, the conversion rate of silicon-based cells is 10% -30%, which means that the remaining solar energy is converted into heat energy and other forms of loss. Therefore, increasing the conversion rate of photovoltaic modules is the key to reducing the cost of power generation.

In order to improve the photoelectric conversion efficiency of the module as much as possible, various methods are used in the process of preparing the module, such as an antireflection film on the surface of the front plate material, and the reflectivity of the back plate is improved to increase the reflection of incident light. Among them, a functional back sheet with high reflectivity and high reliability is one of the main methods for increasing the output power of a solar cell module.

SUMMERY OF THE UTILITY MODEL

To the problem in the above-mentioned technical background, the utility model aims at providing a functional solar energy backplate and preparation method thereof improves the reflectivity of backplate, and then improves the generating efficiency of backplate.

In order to realize the above purpose, the utility model discloses a technical scheme be:

the utility model provides a functional solar energy backplate, includes the substrate layer, is located the outer protective layer and the interior protective layer of the relative both sides of substrate layer it is relative on the outer protective layer be provided with a plurality of recess on the side plane of substrate layer, be in through single face vacuum aluminizing it is relative on the outer protective layer the one side of substrate layer is formed with the layer of vacuum aluminum-plated layer, the layer of vacuum aluminum-plated layer evenly covers outer protective layer surface and in the recess, make the layer of vacuum aluminum-plated layer is unsmooth type.

Further, the groove bottom of the groove is of a planar structure or a conical structure.

Further, the groove is of a diamond structure, an oval structure or a rectangular structure.

Further, the depth of the groove is 10-100 microns.

Further, the substrate layer is a PET polyester film layer.

Furthermore, the outer protective layer and the inner protective layer are fluorine-containing polymer resin layers.

Furthermore, adhesive layers are respectively arranged between the substrate layer and the outer protective layer and between the substrate layer and the inner protective layer.

The technical effects of the utility model reside in that:

the utility model discloses in set up groove structure on the outer protective layer surface of backplate to increase the heat radiation of backplate, at outer protective layer surface evaporation plating aluminized film simultaneously, form even aluminized film on the outer protective layer plane and in the recess, the outer structure of backplate of unsmooth shape makes it have excellent heat dispersion, increases the scattered luminous intensity simultaneously, reaches better diffusion effect, improves the reflectivity of backplate, and then improves photovoltaic module's generating efficiency.

Drawings

Fig. 1 is a schematic cross-sectional structure diagram of the functional solar back panel of the present invention;

fig. 2 is a schematic structural diagram of an outer protective layer in the functional solar back panel of the present invention;

fig. 3 is a schematic cross-sectional view of a functional solar back panel according to another embodiment of the present invention.

Reference numerals: 1-a substrate layer; 2-an outer protective layer; 3-an inner protective layer; 4-a groove; 5-vacuum aluminum layer plating; 6-adhesive layer.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

Referring to the accompanying drawings 1-3, a functional solar energy backboard comprises a substrate layer 1, an outer protection layer 2 and an inner protection layer 3 which are positioned on two opposite sides of the substrate layer 1, wherein the outer protection layer 2 is opposite to the inner protection layer, a plurality of grooves 4 are formed in a side plane of the substrate layer 1, the outer protection layer 2 is opposite to the substrate layer 1 through single-side vacuum aluminum plating, a vacuum aluminum plating layer 5 is formed on one side of the substrate layer 1, and the vacuum aluminum plating layer 5 is uniformly covered on the surface of the outer protection layer 2 and in the grooves 4 to enable the vacuum aluminum plating layer 5 to be concave-convex.

In an embodiment of the present invention, the bottom of the groove 4 is a planar structure, as shown in fig. 1 and 2, and the bottom of the groove 4 is a flat structure.

In another embodiment of the present invention, the bottom of the groove 4 is a tapered structure, as shown in fig. 3, and the tapered bottom of the groove 4 extends inward along the thickness direction of the outer protective layer 2. The intensity of scattered light of the back plate is increased, and the power generation efficiency is improved.

Further, the groove 4 has a diamond structure, an oval structure or a rectangular structure.

Further, the depth of the groove 4 is 10-100 microns.

Further, the substrate layer 1 is a PET polyester film layer.

Further, the outer protective layer 2 and the inner protective layer 3 are fluorine-containing polymer resin layers.

Further, adhesive layers 6 are provided between the base material layer 1 and the outer protective layer 2 and the inner protective layer 3, respectively.

The utility model discloses in set up groove structure on the outer protective layer surface of backplate to increase the heat radiation of backplate, at outer protective layer surface evaporation plating aluminized film simultaneously, form even aluminized film on the outer protective layer plane and in the recess, make it have excellent heat dispersion, increase scattered luminous intensity simultaneously, reach better diffusion effect, improve the reflectivity of backplate, and then improve photovoltaic module's generating efficiency.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the principles of the present invention may be applied to any other embodiment without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a functional solar energy backplate, includes substrate layer (1), is located outer protective layer (2) and interior protective layer (3) of the relative both sides of substrate layer (1), its characterized in that be in it is relative on outer protective layer (2) be provided with a plurality of recess (4) on one side plane of substrate layer (1), aluminize through the single face vacuum be in outer protective layer (2) are relative the one side of substrate layer (1) is formed with vacuum aluminum coated layer (5), vacuum aluminum coated layer (5) evenly cover outer protective layer (2) surface and in recess (4), make vacuum aluminum coated layer (5) are unsmooth type.

2. A functional solar back sheet according to claim 1, wherein the groove bottom of the groove (4) is of a planar or conical configuration.

3. A functional solar back sheet according to claim 1, wherein the grooves (4) have a diamond, oval or rectangular configuration.

4. A functional solar back sheet according to claim 1, wherein the depth of the grooves (4) is 10-100 μm.

5. The functional solar back sheet according to claim 1, wherein the substrate layer (1) is a PET polyester film layer.

6. The functional solar back sheet according to claim 1, wherein the outer protective layer (2) and the inner protective layer (3) are fluoropolymer resin layers.

7. The functional solar back sheet according to claim 1, wherein an adhesive layer (6) is disposed between the substrate layer (1) and the outer and inner protective layers (2, 3).