阅读说明：本技术 一种电热联产光伏板的制造方法 (Manufacturing method of electric heat cogeneration photovoltaic panel ) 是由 施锋 于 2018-07-17 设计创作，主要内容包括：一种电热联产光伏板的制造方法包括：吸热板绝缘的方法、电池片封装到吸热板的方法、吸热板进一步焊接到背循环管的方法。采用本发明的方法,电池片被首先封装到吸热板上,然后吸热板被快速地焊接到换热管上,电池片不受损害。(A manufacturing method of a cogeneration photovoltaic panel comprises the following steps: the method for insulating the heat absorbing plate, the method for packaging the battery piece on the heat absorbing plate and the method for welding the heat absorbing plate to the back circulation pipe. With the method of the present invention, the battery pieces are first encapsulated onto the heat absorbing plate, and then the heat absorbing plate is rapidly welded to the heat exchange tube, without damaging the battery pieces.)

1. A manufacturing method of a cogeneration photovoltaic panel is characterized by comprising the following steps:

firstly, spraying a layer of plastic on the surface of a metal aluminum plate by adopting a plastic spraying method, or generating an oxide layer of 12-14 microns on the surface of the metal aluminum plate by adopting an anodic oxidation method, or depositing a layer of silicon dioxide or silicon nitride film by adopting a magnetron sputtering method; secondly, laying a layer of EVA (ethylene vinyl acetate) adhesive film on the surface of the metal aluminum plate, then arranging the solar cells, and then laying a layer of EVA adhesive film above the solar cells;

laminating and melting EVA on the metal plate after the battery is packaged by adopting a laminating machine;

then welding the branch copper pipe and the collecting copper pipe into a circulating pipeline frame;

then welding the circulating pipeline frame to the back of the aluminum plate packaged with the solar cell by laser welding to prepare a core plate;

and then, the welded core plates are packaged by adopting the frame and the cover layer toughened glass to form the electric heating cogeneration assembly.

2. A method of manufacturing a cogeneration photovoltaic panel of claim 1, wherein: the metal aluminum plate is subjected to single-side plastic spraying or single-side oxidation to form an oxide film or single-side deposition of a silicon dioxide or silicon nitride film.

3. A method of manufacturing a cogeneration photovoltaic panel of claim 1, wherein: laser welding is carried out between the two sides of the branch copper pipe and the metal aluminum plate to form two rows of welding lines consisting of welding points which are spaced by 3-5 mm.

Technical Field

The invention relates to the field of processing and manufacturing of photovoltaic panels, in particular to a processing and manufacturing technology of a photovoltaic panel and a heat collection panel combined electric heating cogeneration photovoltaic panel.

Background

Solar radiation incident on a photovoltaic module is a broad spectrum of light. In the process of converting solar energy through a single junction solar cell photovoltaic module, a single semiconductor solar cell, such as a silicon solar cell, can only convert part of the solar spectrum into electric energy with high efficiency, and the rest of the solar spectrum is converted into heat energy mostly. For solar cells packaged in modules, the portion converted into thermal energy not only directly reduces the electrical conversion efficiency of the cell, but indirectly reduces the existing electrical conversion efficiency of the cell through temperature rise through the accumulation of heat in the module. The efficiency of conventional flat panel photovoltaic modules is typically around 20%, with efficiency degradation of 0.4-0.6%/deg.C due to increased cell operating temperature relative to room temperature. Therefore, the water cooling electric heat cogeneration photovoltaic panel is adopted, the heat generated by the assembly can be extracted and utilized, the total conversion efficiency of the assembly reaches more than 70 percent, and the conversion efficiency of the electricity of the assembly is greatly improved, wherein in a classical case, a 270-watt assembly is subjected to 1000W/m solar radiation²Under the irradiation conditions ofThe electricity and heat cogeneration photovoltaic panel can obtain 11.3 percent more electric energy than the conventional photovoltaic panel in the day of 8 hours. Therefore, the electric heat cogeneration photovoltaic panel is widely regarded. The cogeneration photovoltaic panels are constructed in a variety of ways, air-cooled, liquid-cooled, both concentrated and non-concentrated. But the most straightforward way is to integrate a conventional tube-sheet collector with a conventional silicon solar cell. Fig. 2 shows the internal structure of a classic cogeneration photovoltaic module using liquid cooling. Wherein the heat collecting plate for extracting heat and cooling the solar cell is a tube plate type heat collecting plate. When manufacturing the type of cogeneration photovoltaic panel, a common method is to manufacture the tube-plate type heat collecting plate and then bond the solar cell to the upper surface of the heat collecting plate, but the tube-plate type heat collecting plate is uneven and cannot directly package the solar cell by using a laminating machine. Meanwhile, when the solar cell is packaged on the surface of the heat collecting flat plate, the reliable insulation and the effective heat transfer between the solar cell and the surface of the heat collecting flat plate are also great challenges.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a processing and manufacturing method of an electric heating cogeneration photovoltaic panel, which can efficiently and reliably package a solar cell on the surface of a flat plate collector by adopting a laminating machine and simultaneously ensure the reliable insulation and the effective heat transfer between the solar cell and the plane of a heat collecting plate.

In order to achieve the purpose, the invention adopts the technical scheme that: a manufacturing method of a cogeneration photovoltaic panel comprises the following steps:

firstly, spraying a layer of plastic on the surface of a metal aluminum plate by adopting a plastic spraying method, or generating an oxide layer of 12-14 microns on the surface of the metal aluminum plate by adopting an anodic oxidation method, or depositing a layer of silicon dioxide or silicon nitride film by adopting a magnetron sputtering method; secondly, laying a layer of EVA (ethylene vinyl acetate) adhesive film on the surface of the metal aluminum plate, then arranging the solar cells, and then laying a layer of EVA adhesive film above the solar cells;

laminating and melting EVA on the metal plate after the battery is packaged by adopting a laminating machine;

then welding the branch copper pipe and the collecting copper pipe into a circulating pipeline frame;

then welding the circulating pipeline frame to the back of the aluminum plate packaged with the solar cell by laser welding to prepare a core plate;

and then, the welded core plates are packaged by adopting the frame and the cover layer toughened glass to form the electric heating cogeneration assembly.

In the scheme, the metal aluminum plate needs to be subjected to single-side plastic spraying or single-side oxidation to form an oxide film or a single-side deposited silicon dioxide or silicon nitride film.

In the scheme, two rows of welding lines consisting of welding points which are spaced by 3-5 mm are formed between the two sides of the branch copper pipe and the metal aluminum plate by laser welding.

The invention provides a method for manufacturing an electric heating cogeneration photovoltaic panel, which can obtain a reliable insulating layer and a good heat transfer effect by adopting a method of processing the surface of a heat collecting panel in advance, can obtain a well-packaged panel by adopting a laminating machine by adopting a method of packaging a solar cell in advance, can manufacture an electric heating cogeneration core panel by welding a circulating pipeline frame to the back of the heat collecting panel packaged with the solar cell integrally by adopting high-speed laser welding, does not need pressurization to damage the panel and the insulating layer, and finally packages the whole assembly by adopting the frame, back thermal insulation cotton and toughened glass.

Drawings

FIG. 1 shows the inner structure of a planar surface of a tube-sheet type cogeneration photovoltaic panel;

FIG. 2 is an overall package structure of a cogeneration photovoltaic panel assembly in an embodiment of the invention;

FIG. 3 is a back circulation tube frame configuration according to an embodiment of the present invention;

FIG. 4 is a welded structure of the back circulation tube and the heat collecting plate in the embodiment of the present invention.

Detailed Description

The technical solution of the present invention is described in detail below with reference to the accompanying drawings and examples.

Fig. 1 is a planar view of the internal structure of a tube-sheet cogeneration photovoltaic panel, in which 100 is a monolithic heat collection panel; 200 is an insulating coating, plating, or deposition layer and an eva (polyethylene vinyl acetate) insulating layer; 300 is a solar cell and another EVA film layer thereon; 400 is a back circulation tube of a tube-plate heat collector; 500 is the frame of the cogeneration assembly; 600 is a side insulation layer; 700 is a toughened glass transparent cover layer; 800 is a back insulation layer.

The embodiment of the invention provides a processing and manufacturing method of a cogeneration photovoltaic panel, which specifically comprises the following steps:

(1) selecting a whole aluminum plate 100 with the same size as that of the needed electric heating cogeneration photovoltaic assembly, and preparing a layer of 12-14 micron aluminum oxide film 200 on one surface of the aluminum plate by adopting an anodic oxidation method or other methods, or spraying a layer of plastic film 200 by adopting a plastic spraying method, or depositing a layer of silicon dioxide or silicon nitride by adopting magnetron sputtering, as shown in figure 2;

(2) laying an EVA adhesive film 210 on the alumina film or the plastic-sprayed film, as shown in FIG. 2;

(3) arranging a solar cell array 300 above the EVA adhesive film, as shown in FIG. 2;

(4) laying an EVA adhesive film 310 above the EVA adhesive film, as shown in FIG. 2;

(5) placing the aluminum plate with the laid solar cell into a laminating machine, pressurizing, heating, melting and packaging to prepare a cell panel;

(6) welding the collector branch pipes and the collector header into a circulation pipe frame 400, as shown in FIG. 3;

(7) aligning and contacting the back surface of the solar cell, which is not packaged by the cell panel, with the circulating pipe frame, and welding the heat collecting branch pipe and the aluminum plate together by using laser to manufacture a core plate, wherein as shown in figure 4, two rows of welding points 410 with intervals of 3-5 mm are formed on two sides of the branch pipe by laser welding;

(8) the core board is packaged by the frame, the cover plate glass and the heat insulating material to manufacture the electricity and heat cogeneration photovoltaic module as shown in figure 2.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.