CN110534600A - A kind of raising sun light utilization efficiency photovoltaic module - Google Patents

Abstract

The invention discloses a photovoltaic module for improving the utilization rate of sunlight, which is characterized in that it comprises a plurality of solar panels (1), and two solar panels (1) are combined to form an upside-down V-shaped plate with an obtuse angle, and The V-shaped panels are fixedly connected to each other by a flat solar panel (1), and a plurality of through holes (2) distributed at equal intervals are opened on the flat solar panel (1). The photovoltaic assembly of the invention improves the utilization rate of solar energy, can make secondary utilization of sunlight, and has good heat dissipation effect, thereby improving the power generation efficiency of the photovoltaic assembly.

Description

A photovoltaic module for improving the utilization rate of sunlight

technical field

The invention relates to a photovoltaic assembly for improving the utilization rate of sunlight, belonging to the technical field of photovoltaic assemblies.

Background technique

New energy is one of the five most decisive technological fields in the world economic development in the 21st century. Solar energy is a clean, efficient and inexhaustible new energy source. In the new reality, governments all over the world regard the utilization of solar energy resources as an important part of national sustainable development. Photovoltaic power generation has the advantages of safety and reliability, no noise, no pollution, less restrictions, low failure rate, and easy maintenance. In 2010, my country's solar thermal utilization industry has made great progress, and the number of production enterprises has grown to more than 5,000. The market is getting bigger and bigger, and it has maintained an annual growth rate of 30% since the late 1990s. At present, my country's solar thermal utilization industry system has been relatively complete, a reasonable supporting industry chain and basic standard system have been initially formed, and a testing and certification system has been established and improved. More importantly, China's self-innovated solar-coated vacuum collector tubes have been recognized internationally, which means that Chinese companies have mastered 95% of the core technologies in the field of solar heat utilization. In terms of application, the combination of solar energy and buildings has also made great progress, and solar heating and industrial utilization have also achieved results.

Although China's solar thermal utilization industry has a gratifying momentum of development, it is inevitable that it will be under rubble. For an emerging industry, there are bound to be many problems in the initial stage of development, and hidden worries are often hidden under the appearance of prosperity. Compared with the booming photovoltaic power generation in the world, China is 10-15 years behind developed countries, and even significantly behind India. Although China's photovoltaic power generation technology continues to improve and the price gradually declines, due to the short development time and lack of experience, from the overall level, the development of China's photovoltaic industry still lags behind the international level. The technical level of solar cell production in China is low, the cost of power generation is high, and it is subject to an incomplete industrial chain structure, so that domestic solar energy companies ultimately only undertake the production links with high pollution and high energy consumption in the industrial chain, and earn only 5- At the same time, the technical barriers of upstream raw materials in the photovoltaic industry are high, mainly controlled by the United States, Japan and other countries, and it is difficult to obtain technology. For ordinary photovoltaic modules, most of the solar panel layers are flat, and the sunlight reflectivity is low after the sunlight passes through the cells. Therefore, this disadvantage is that the utilization rate of solar energy is low, which affects the power generation efficiency, and ordinary photovoltaic modules dissipate heat. The lower efficiency also affects the power generation efficiency of the battery.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a photovoltaic module that improves the utilization rate of sunlight.

In order to achieve the above-mentioned purpose, the present invention provides a photovoltaic module for improving the utilization rate of sunlight, which includes several solar panels, and two solar panels are combined to form an upside-down V-shaped panel with an obtuse angle. The flat solar panels are fixedly connected to each other, and the flat solar panels are provided with a plurality of through holes distributed at equal intervals.

Preferably, the solar panel includes a front sheet, a front-layer encapsulation film, a battery sheet, a rear-layer encapsulation film and a back sheet, and the front sheet, the front-layer encapsulation film, the cell sheet, the rear-layer encapsulation film and the back sheet are fixedly connected in sequence from top to bottom , the front plate, the front layer packaging film, the battery sheet, the rear layer packaging film and the back plate are provided with a plurality of through holes distributed at equal intervals from top to bottom.

Preferably, the included angle of the V-shaped plate is 110-140 degrees.

Preferably, the included angle of the V-shaped plate is an isosceles triangle of 125 degrees.

Preferably, the backplane has a three-layer structure, and the three-layer structure includes an outer protective layer, a middle protective layer and an inner protective layer distributed from bottom to top, the outer protective layer is made of PVDF, the middle protective layer is made of PET, and the inner protective layer is made of PVDF. The material of the protective layer is PVDF.

Preferably, the front-layer encapsulation film and the rear-layer encapsulation film are one of polyethylene resin product films, polyvinyl chloride resin product films, ethylene copolymer films of 1-butene and ethylene-1-octene copolymer films.

Preferably, the front plate is ultra-white embossed glass, and the thickness of the front plate is 1.6 mm; the front layer packaging film and the rear layer packaging film are resin product films of ethylene copolymer; the surface of the front plate is embossed and then coated with silicon dioxide film .

Beneficial effects achieved by the present invention:

The photovoltaic assembly of the present invention improves the utilization rate of solar energy, can make secondary utilization of sunlight, has good heat dissipation effect, and improves the power generation efficiency of the photovoltaic assembly.

Description of drawings

1 is a side view of a photovoltaic module of the present invention;

2 is a top view of the photovoltaic module of the present invention;

Description of reference numerals in the drawings: 1-solar panel; 2-through hole.

Detailed ways

The following examples are only used to illustrate the technical solutions of the present invention more clearly, and cannot be used to limit the protection scope of the present invention.

A photovoltaic module for improving the utilization rate of sunlight, comprising several solar panels, two solar panels are combined to form an inverted V-shaped panel with an obtuse angle, and the several V-shaped panels are mutually connected by a flat solar panel. For fixed connection, a plurality of through holes distributed at equal intervals are opened on the flat solar panel.

Further, the solar panel includes a front plate, a front layer encapsulation film, a battery sheet, a rear layer encapsulation film and a back plate, and the front plate, the front layer encapsulation film, the battery sheet, the rear layer encapsulation film and the back plate are fixed and connected sequentially from top to bottom. , the front plate, the front layer packaging film, the battery sheet, the rear layer packaging film and the back plate are provided with a plurality of through holes distributed at equal intervals from top to bottom.

Further, the included angle of the V-shaped plate is 110°-140°.

Further, the included angle of the V-shaped plate is an isosceles triangle of 125 degrees.

Further, the backplane has a three-layer structure, and the three-layer structure includes an outer protective layer, a middle protective layer and an inner protective layer distributed from bottom to top, the outer protective layer is made of PVDF, the middle protective layer is made of PET, and the inner protective layer is made of PVDF. The material of the protective layer is PVDF. The outer protective layer PVDF has good resistance to environmental erosion, the middle layer is PET polyester film with good insulating properties, and the inner layer PVDF and EVA have good bonding properties.

Further, the front layer encapsulation film and the rear layer encapsulation film are one of polyethylene resin product film, polyvinyl chloride resin product film, 1-butene ethylene copolymer film and ethylene-1-octene copolymer film.

Further, the front plate is ultra-white embossed glass, and the thickness of the front plate is 1.6 mm; the front layer packaging film and the rear layer packaging film are resin product films of ethylene copolymer; the surface of the front plate is embossed and coated with silicon dioxide film .

Through experiment, the photovoltaic module of the present invention is compared with common photovoltaic module, under the air temperature of 36 degrees Celsius, temperature and power generation efficiency are as shown in Table 1:

Table 1 is a comparison table of the temperature and power generation efficiency of the photovoltaic modules of the present invention and ordinary photovoltaic modules

It can be seen from Table 1 that the heat dissipation performance of the photovoltaic module of the present invention is obviously better, and the power generation efficiency of the optical module is obviously improved.

The above are only the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, without departing from the technical principle of the present invention, several improvements and modifications can also be made. These improvements and modifications It should also be regarded as the protection scope of the present invention.

Claims (7)

1. A photovoltaic module for improving the utilization rate of sunlight, characterized in that it comprises several solar panels (1), and a combination of two solar panels (1) forms an upside-down V-shaped panel with an obtuse angle, and several V-shaped panels are combined to form an obtuse angle. The shaped plates are fixedly connected to each other through a flat solar panel (1), and a plurality of through holes (2) distributed at equal intervals are opened on the flat solar panel (1). 2. A photovoltaic module for improving the utilization rate of sunlight according to claim 1, characterized in that the solar panel (1) comprises a front plate, a front layer encapsulation film, a battery sheet, a rear layer encapsulation film and a back plate, and the front plate , The front layer packaging film, the battery sheet, the back layer packaging film and the back plate are fixedly connected in sequence from top to bottom, and the front plate, the front layer packaging film, the battery sheet, the back layer packaging film and the back plate are opened from top to bottom. Equally spaced through holes (2). 3 . The photovoltaic module of claim 1 , wherein the included angle of the V-shaped plate is 110°-140°. 4 . 4 . The photovoltaic module for improving the utilization rate of sunlight according to claim 1 , wherein the included angle of the V-shaped plate is an isosceles triangle of 125 degrees. 5 . 5. A photovoltaic module for improving the utilization rate of sunlight according to claim 2, wherein the back plate is a three-layer structure, and the three-layer structure comprises an outer protective layer, a middle protective layer and an inner layer distributed from bottom to top The protective layer, the outer protective layer is made of PVDF, the middle protective layer is made of PET, and the inner protective layer is made of PVDF. 6. a kind of photovoltaic module that improves the utilization rate of sunlight according to claim 2, it is characterized in that, the encapsulation film of the front layer and the encapsulation film of the rear layer are polyethylene resin product film, polyvinyl chloride resin product film, 1-butene One of the ethylene copolymer film and ethylene-1-octene copolymer film. 7. A photovoltaic module for improving the utilization rate of sunlight according to claim 2, wherein the front plate is ultra-white patterned glass, and the thickness of the front plate is 1.6mm; the front layer packaging film and the rear layer packaging film are ethylene copolymerization The resin product film of the material; the surface of the front plate is embossed and coated with a silicon dioxide film.