CN104810421A - Photovoltaic glass and manufacturing method thereof, as well as photovoltaic module - Google Patents

Abstract

The embodiment of the present invention discloses a photovoltaic glass and its manufacturing method, and a photovoltaic module including the photovoltaic glass, wherein the photovoltaic glass is used to receive sunlight in the photovoltaic module including the photovoltaic glass, including: a glass substrate and The first adhesive layer located on the surface of the glass substrate, wherein the glass substrate and the first adhesive layer are integrally structured, and the first adhesive layer is thermoplastic and adhesive. It can be seen that the photovoltaic glass provided by the embodiment of the present invention has an integrated structure, that is, it is directly produced by the same manufacturer in the same workshop, thereby avoiding the problem of introducing foreign objects during the laying process of the glass substrate and EVA adhesive layer in the prior art The invention solves the problem of unqualified photovoltaic modules due to the introduction of foreign matter between the glass substrate and the EVA glue layer, and improves the qualified rate of photovoltaic modules including the photovoltaic glass.

Description

Photovoltaic glass and manufacturing method thereof, photovoltaic module

technical field

The invention relates to the field of photovoltaic technology, in particular to a photovoltaic glass, a manufacturing method thereof, and a photovoltaic module.

Background technique

At present, the conventional photovoltaic modules on the market are composed of five layers: backplane, EVA, cells, EVA and glass. The manufacturing process is usually to stack the five layers through the laying process during the production process, and then perform the lamination process. , Fix the five-layer structure of the backplane, EVA, battery sheet, EVA and glass together. Among them, the laying process is a process of making photovoltaic modules, which is used to stack welded and stringed solar cells in a certain order and shape to assist EVA, tempered glass, and backplanes. However, due to the introduction of foreign matter between the two laid layers during the laying process, the pass rate of photovoltaic modules in the prior art is low.

Contents of the invention

In order to solve the above technical problems, embodiments of the present invention provide a photovoltaic glass and its manufacturing method, and a photovoltaic module including the photovoltaic glass, so as to improve the pass rate of the photovoltaic module.

In order to solve the above problems, the embodiments of the present invention provide the following technical solutions:

A photovoltaic glass, the photovoltaic glass is used to receive sunlight in a photovoltaic module including the photovoltaic glass, comprising: a glass substrate and a first adhesive layer on the surface of the glass substrate, wherein the glass substrate and the The first adhesive layer has an integral structure, and the first adhesive layer is thermoplastic and viscous.

Preferably, the first adhesive layer is an EVA adhesive layer.

A photovoltaic module, comprising the photovoltaic glass described in any one of the above.

Preferably, the photovoltaic module further includes: a back plate opposite to the photovoltaic glass; a second adhesive layer located on the side of the back plate facing the photovoltaic glass; a second adhesive layer located between the second adhesive layer and the first A layer of glue between the solar cells.

A method for making photovoltaic glass, applied to the photovoltaic glass described in any one of the above, the method comprising:

Making glass substrates;

forming a layer of molten adhesive layer on the surface of the glass substrate;

The molten adhesive layer is pressed and cooled to form a first adhesive layer.

Compared with the prior art, the above-mentioned technical solution has the following advantages:

The technical solution provided by the embodiment of the present invention includes: a glass substrate and a first glue layer located on the surface of the glass substrate, wherein the glass substrate and the first glue layer are integrally structured. It can be seen that the photovoltaic glass provided by the embodiment of the present invention has an integrated structure, that is, it is directly produced by the same manufacturer in the same workshop, thereby avoiding the problem of introducing foreign objects during the laying process of the glass substrate and EVA adhesive layer in the prior art The invention solves the problem of unqualified photovoltaic modules due to the introduction of foreign matter between the glass substrate and the EVA glue layer, and improves the qualified rate of photovoltaic modules including the photovoltaic glass.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a schematic structural view of photovoltaic glass provided by an embodiment of the present invention;

Fig. 2 is a schematic structural diagram of a photovoltaic module provided by an embodiment of the present invention;

Fig. 3 is a schematic flowchart of a method for manufacturing photovoltaic glass provided by an embodiment of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In the following description, a lot of specific details are set forth in order to fully understand the present invention, but the present invention can also be implemented in other ways different from those described here, and those skilled in the art can do it without departing from the meaning of the present invention. By analogy, the present invention is therefore not limited to the specific examples disclosed below.

Secondly, the present invention is described in detail in combination with schematic diagrams. When describing the embodiments of the present invention in detail, for the convenience of explanation, the cross-sectional view showing the device structure will not be partially enlarged according to the general scale, and the schematic diagram is only an example, and it should not be limited here. The protection scope of the present invention. In addition, the three-dimensional space dimensions of length, width and depth should be included in actual production.

The embodiment of the present invention provides a photovoltaic glass, as shown in Figure 1, the photovoltaic glass includes: a glass substrate 11 and a first adhesive layer 12 on the surface of the glass substrate 11, wherein the glass substrate 11 and the The first adhesive layer 12 has an integral structure. Wherein, the photovoltaic glass is used to receive sunlight in the photovoltaic module made of the photovoltaic glass, and the first adhesive layer 12 is thermoplastic and viscous, and is used for bonding with other structures to realize the integration of the photovoltaic glass with other structures. The fixed connection of the structure. Preferably, the first adhesive layer 12 is an EVA adhesive layer, but the present invention is not limited thereto, and it depends on the circumstances.

In the embodiment of the present invention, the glass substrate 11 in the photovoltaic glass and the first adhesive layer 12 on the surface of the glass substrate 11 are produced by the same manufacturer at one time, that is, the glass is made in the same production workshop. After the substrate 11, the first adhesive layer 12 is directly formed on the surface of the glass substrate 11, instead of producing the glass substrate 11 and the first adhesive layer 12 separately, and then bonding the glass substrate 11 and the first adhesive layer 12, Thereby avoiding the problem of introducing external foreign matter in the process of laying the glass substrate 11 and the EVA adhesive layer in the prior art, solved the problem that the photovoltaic module is unqualified due to the introduction of foreign matter between the glass substrate 11 and the EVA adhesive layer, and improved The pass rate of photovoltaic modules including the photovoltaic glass.

Moreover, since the glass substrate 11 and the first adhesive layer 12 in the embodiment of the present invention are integrally structured, the assembly process in the photovoltaic module assembly process is reduced, the labor intensity of photovoltaic module production is reduced, and the work efficiency is improved. The cost of the photovoltaic module is reduced.

Correspondingly, an embodiment of the present invention also provides a photovoltaic module, which includes the photovoltaic glass provided in any one of the above embodiments.

On the basis of the above-mentioned embodiments, in one embodiment of the present invention, as shown in FIG. 2 , the photovoltaic module further includes: a back plate 2 opposite to the photovoltaic glass 1; The second adhesive layer 3 on one side of the photovoltaic glass 1 ; the solar battery sheet 4 located between the second adhesive layer 3 and the first adhesive layer 12 . It should be noted that, in the embodiment of the present invention, the solar cell 4 may be a monocrystalline silicon solar cell or a polycrystalline silicon solar cell, which is not limited in the present invention and depends on the circumstances.

On the basis of the above-mentioned embodiments, in a preferred embodiment of the present invention, the second adhesive layer 3 is an EVA adhesive layer, which is not limited in the present invention and depends on the specific circumstances.

Compared with the photovoltaic modules in the prior art, the photovoltaic module provided by the embodiment of the present invention uses photovoltaic glass to replace the glass substrate and EVA adhesive layer in the photovoltaic module in the prior art, thereby avoiding the glass substrate and EVA adhesive layer in the prior art. The problem of foreign matter introduced during the laying of the EVA adhesive layer solves the problem of unqualified photovoltaic modules due to the introduction of foreign matter between the glass substrate and the EVA adhesive layer, and improves the qualified rate of photovoltaic modules including the photovoltaic glass.

Moreover, since the glass substrate 11 and the first adhesive layer 12 in the embodiment of the present invention are integrally structured, the assembly process in the photovoltaic module assembly process is reduced, the labor intensity of photovoltaic module production is reduced, and the work efficiency is improved. The cost of the photovoltaic module is reduced.

In addition, in the photovoltaic module provided by the embodiment of the present invention, the glass substrate 11 and the first adhesive layer 12 are integrally structured, thus avoiding the The number of the glass substrate does not match the number of the first adhesive layer.

The embodiment of the present invention also provides a method for manufacturing photovoltaic glass, which is applied to the photovoltaic glass provided in any of the above embodiments, as shown in Figure 3, the method includes:

Step 1: making a glass substrate;

Step 2: forming a layer of molten adhesive layer on the surface of the glass substrate;

Step 3: Pressing and cooling the melted adhesive layer to form a first adhesive layer.

On the basis of the foregoing embodiments, in one embodiment of the present invention, the method includes:

Step 4: Divide the photovoltaic glass and divide the photovoltaic glass into a plurality of photovoltaic glass units, the area of the photovoltaic glass unit matches the area of the solar cells in a single photovoltaic module.

In summary, the photovoltaic glass and its manufacturing method provided by the embodiments of the present invention, as well as the photovoltaic module including the photovoltaic glass, replace the glass substrate and EVA adhesive layer in the photovoltaic module in the prior art with photovoltaic glass, thereby avoiding It solves the problem of introducing foreign matter in the process of laying the glass substrate and the EVA glue layer in the prior art, solves the problem that the photovoltaic module is unqualified due to the introduction of foreign matter between the glass substrate and the EVA glue layer, and improves the photovoltaic module including the photovoltaic glass. The qualified rate of photovoltaic modules.

Moreover, because the glass substrate and the first adhesive layer in the embodiment of the present invention are integrated, the assembly process in the photovoltaic module assembly process is reduced, the labor intensity of photovoltaic module production is reduced, the work efficiency is improved, and finally the The cost of the photovoltaic module.

In addition, in the photovoltaic module provided by the embodiment of the present invention, the glass substrate and the first adhesive layer are integrally structured, so that when the photovoltaic module manufacturer purchases the glass substrate and the first adhesive layer separately, the glass substrate The problem with the quantity mismatch of the first glue layer.

Each part in this manual is described in a progressive manner, and each part focuses on the difference from other parts, and the same and similar parts of each part can be referred to each other.

The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (5)

1. A photovoltaic glass, characterized in that, the photovoltaic glass is used in a photovoltaic module comprising the photovoltaic glass to receive sunlight, comprising: a glass substrate and a first adhesive layer positioned on the surface of the glass substrate, wherein the The glass substrate and the first adhesive layer are integrally structured, and the first adhesive layer is thermoplastic and viscous. 2. The photovoltaic glass according to claim 1, characterized in that, the first adhesive layer is an EVA adhesive layer. 3. A photovoltaic module, characterized in that it comprises the photovoltaic glass according to claim 1 or 2. 4. The photovoltaic module according to claim 3, further comprising: a back plate opposite to the photovoltaic glass; a second glue layer located on the side of the back plate facing the photovoltaic glass; The solar battery sheet between the second adhesive layer and the first adhesive layer. 5. A method for making photovoltaic glass, applied to the photovoltaic glass according to claim 1 or 2, characterized in that the method comprises: Making glass substrates; forming a layer of molten adhesive layer on the surface of the glass substrate; The molten adhesive layer is pressed and cooled to form a first adhesive layer.