CN211208461U

CN211208461U - Heat dissipation type dual-glass photovoltaic assembly

Info

Publication number: CN211208461U
Application number: CN201922495652.8U
Authority: CN
Inventors: 王建军; 宁兆伟; 冯涛; 梁丛武; 黄涛华; 石云; 汤栋
Original assignee: Worldwide Energy And Manufacturing Usa Co ltd
Current assignee: Worldwide Energy And Manufacturing Usa Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-08-07
Anticipated expiration: 2029-12-31

Abstract

The utility model relates to a heat dissipation type dual-glass photovoltaic module, including first glass layer, first encapsulated layer, solar wafer, second encapsulated layer and second glass layer, first glass layer and second glass in situ portion all have a plurality of through-hole, the inside intercommunication of all through-holes communicates with each other with the external world. The shape of the through hole is one or more of a circle, an ellipse, a semicircle, a semi-ellipse, a square, a triangle or a polygon. The through holes in the first glass layer correspond to the regions where the solar cells are not arranged. The utility model discloses an use first glass layer and the second glass layer that has the through-hole, increased the area of contact of glass face and air, strengthen the radiating effect of subassembly by a wide margin, promoted the output and the conversion efficiency of subassembly.

Description

Heat dissipation type dual-glass photovoltaic assembly

Technical Field

The utility model relates to a solar energy material and device field, in particular to heat dissipation type dual-glass photovoltaic module.

Background

With the reduction of traditional fossil energy every day and the continuous aggravation of harm to the environment, all countries in the world aim at renewable energy, hope that renewable energy can change the energy structure of human beings and maintain long-term sustainable development. Among them, solar energy is a focus of attention due to its unique advantages. Abundant solar radiation energy is an important energy source and is renewable energy which is inexhaustible, pollution-free and cheap.

The most extensive application of solar energy is photovoltaic power generation, the core component of the photovoltaic power generation is a photovoltaic module, and the basic unit of the photovoltaic module is a solar cell. The traditional double-glass photovoltaic module is mainly characterized in that solar cells are packaged into a whole by toughened glass, EVA (ethylene vinyl acetate) and toughened glass, wherein solar cells are connected in series by welding strips, then the solar cells are connected into a junction box through a converging strip, and finally electric energy generated by the module is output through a connector on the junction box.

The existing photovoltaic module is designed according to standard solar irradiation intensity, the rated working temperature of a solar cell is usually not higher than 85 ℃, once the illumination intensity is enhanced, the temperature of the solar cell exceeds 85 ℃, the performance of the whole photovoltaic module is greatly reduced, if the temperature of the photovoltaic module exceeds 120 ℃, EVA (ethylene vinyl acetate) in the fixed and sealed photovoltaic module can be melted, and the photovoltaic module is damaged.

Therefore, when the existing photovoltaic module is applied to a high-concentration system, if a high-efficiency and reliable heat dissipation mechanism is not installed, the performance of the photovoltaic module can be greatly reduced along with the rise of the temperature, the use efficiency is seriously influenced, even the battery is damaged, and meanwhile, a large amount of heat is generated due to overhigh temperature, and the power generation efficiency is directly influenced. Therefore, how to effectively reduce the higher working temperature of the photovoltaic module caused by the increase of the illumination intensity is a problem which needs to be solved urgently in the field of solar photovoltaic power generation.

Disclosure of Invention

To the problem, the utility model aims at providing a heat dissipation type dual-glass photovoltaic module through the improvement to subassembly packaging material, reaches good radiating effect, makes the subassembly during operation keep at lower temperature, has promoted the maximum output of subassembly.

The utility model discloses a can realize like this: the utility model provides a heat dissipation type dual-glass photovoltaic module, includes first glass layer, first encapsulated layer, solar wafer, second encapsulated layer and second glass layer, first glass layer and the inside a plurality of through-hole that all have of second glass layer, all through-holes inside intercommunication and communicate with each other with the external world.

The shape of the through hole is one or more of a circle, an ellipse, a semicircle, a semi-ellipse, a square, a triangle or a polygon.

The through holes in the first glass layer correspond to the regions where the solar cells are not arranged.

The first and second encapsulation layers are ethylene vinyl acetate copolymer, polyvinyl butyral, polyolefin, or silicone.

The first glass layer is ultra-white embossed semi-tempered coated glass, and the second glass layer is float semi-tempered glass.

The solar cell is a whole cell or a sliced cell.

The utility model has the advantages that: by using the first glass layer and the second glass layer with the through holes, the contact area between the glass surface and air is greatly increased, and the structure can furthest dissipate heat generated in the assembly, so that the heat dissipation effect of the assembly is greatly improved; in addition, the through holes of the first glass layer and the second glass layer are communicated with the outside, convection can be formed between the through holes and outside air, and the heat dissipation capacity of the assembly is further improved, so that the solar cell in the assembly has lower working temperature, and the output power and the conversion efficiency of the assembly are improved.

Drawings

Fig. 1 is a schematic structural view of a heat dissipation type dual-glass photovoltaic module of the present invention;

in the figure, 1 is a first glass layer, 2 is a first packaging layer, 3 is a solar cell, 4 is a second packaging layer, 5 is a second glass layer, and 6 is a through hole.

Detailed Description

For further understanding of the technical features and contents of the present invention, reference is made to the following description taken in conjunction with the accompanying drawings.

As shown in fig. 1, the heat dissipation type dual-glass photovoltaic module comprises a first glass layer 1, a first packaging layer 2, a solar cell 3, a second packaging layer 4 and a second glass layer 5, wherein a plurality of through holes 6 are formed in the first glass layer and the second glass layer, and all the through holes are communicated with each other and are communicated with the outside. The shape of the through hole is one or more of a circle, an ellipse, a semicircle, a semi-ellipse, a square, a triangle or a polygon. In order to ensure the transmittance of the first glass layer to light, the through holes in the first glass layer are arranged in the regions without the solar cells in the module, such as the gap regions among the solar cells, the regions between the outermost solar cells and the glass edge, and the bus bar regions used by the series connection of the cells. As for the second glass layer, the through holes in the second glass layer can be randomly arranged, and the contact area between the glass surface and the air is larger, so that the second glass layer has stronger heat dissipation capacity than the first glass layer. The through holes arranged in the first glass layer through hole and the second glass layer are communicated with each other and are communicated with the outside, so that air in the through holes can form convection with air outside, the heat dissipation capacity of the assembly is further improved, heat generated by the solar cell can be quickly dissipated into the air, the solar cell has lower working temperature, and the output power and the conversion efficiency of the assembly are improved.

In this embodiment, first glass layer and second glass in situ portion have set up a plurality of circular shape through-holes, and glass's weight has been reduced on the basis of two-layer glass intensity about guaranteeing to this kind of structure, and consequently dual glass assembly in this embodiment has the weight lighter than conventional dual glass assembly, has made things convenient for dual glass assembly's production, transportation and installation. Especially for some installation sites with load-bearing requirements, the dual-glass assembly has greater advantages.

The above embodiments are only for the purpose of illustration and are not intended to be limiting, and those skilled in the art can make various changes and modifications without departing from the scope of the present invention. Changes and modifications to the above-described embodiments are intended to fall within the scope of the appended claims, as long as they are within the true spirit of the invention.

Claims

1. The utility model provides a two glass photovoltaic module of heat dissipation type, includes first glass layer, first encapsulated layer, solar wafer, second encapsulated layer and second glass layer, its characterized in that: the first glass layer and the second glass layer are internally provided with a plurality of through holes, and all the through holes are communicated with each other and are communicated with the outside.

2. The dual glass photovoltaic assembly of claim 1, wherein: the shape of the through hole is one or more of a circle, an ellipse, a semicircle, a semi-ellipse, a square, a triangle or a polygon.

3. The dual glass photovoltaic assembly of claim 1, wherein: the through holes in the first glass layer correspond to the regions where the solar cells are not arranged.

4. The dual glass photovoltaic assembly of claim 1, wherein: the first and second encapsulation layers are ethylene vinyl acetate copolymer, polyvinyl butyral, polyolefin, or silicone.

5. The dual glass photovoltaic assembly of claim 1, wherein: the first glass layer is ultra-white embossed semi-tempered coated glass, and the second glass layer is float semi-tempered glass.

6. The dual glass photovoltaic assembly of claim 1, wherein: the solar cell is a whole cell or a sliced cell.