阅读说明：本技术 一种太阳能板及用于太阳能板的表面涂层的制备方法 (Solar panel and preparation method of surface coating for solar panel ) 是由 不公告发明人 于 2018-06-28 设计创作，主要内容包括：本发明涉及一种太阳能板及用于太阳能板的表面涂层的制备方法。其中,太阳能板包括：板体,用于接收太阳辐射并将太阳能转化为电能或热能；支架,设置于板体的下方和/或周围,用于支承板体；以及表面涂层,涂布于板体的朝向太阳方向的表面,且表面涂层由如下原料组成:乙醇25％-30％、正丙醇25％-30％、丙二醇甲醚20％-25％、非晶硅1％-5％、甲醇1％-2％、硝酸0.1％-0.5％以及水。此外,本发明还提供了一种制备表面涂层的方法。本发明能够有效地减少太阳光反射率和折射率,进而提升太阳能转化效率。因为表面涂层利用化学反应与玻璃盖板一体成型,解决了高温粘合镀膜易剥落问题,提高使用寿命到与电站保持一致,并减少灰尘的附着力,同时有自洁功能。(The invention relates to a solar panel and a preparation method of a surface coating for the solar panel. Wherein, solar panel includes: the solar panel comprises a panel body, a solar panel and a solar panel, wherein the panel body is used for receiving solar radiation and converting solar energy into electric energy or heat energy; the bracket is arranged below and/or around the plate body and is used for supporting the plate body; and the surface coating is coated on the surface of the plate body facing to the sun direction and consists of 25-30% of ethanol, 25-30% of n-propanol, 20-25% of propylene glycol methyl ether, 1-5% of amorphous silicon, 1-2% of methanol, 0.1-0.5% of nitric acid and water. In addition, the invention also provides a method for preparing the surface coating. The invention can effectively reduce the reflectivity and the refractive index of sunlight, thereby improving the solar energy conversion efficiency. Because the surface coating is integrally formed with the glass cover plate by using chemical reaction, the problem that a high-temperature adhesive coating is easy to peel off is solved, the service life is prolonged to be consistent with that of a power station, the adhesive force of dust is reduced, and the glass cover plate has a self-cleaning function.)

1. A solar panel, comprising:

the solar panel comprises a panel body, a solar panel and a solar panel, wherein the panel body is used for receiving solar radiation and converting solar energy into electric energy or heat energy;

the bracket is arranged below and/or around the plate body and is used for supporting the plate body; and the surface coating is coated on the surface of the plate body facing to the sun direction, and consists of the following raw materials:

25-30% of ethanol, 25-30% of n-propanol, 20-25% of propylene glycol methyl ether, 1-5% of amorphous silicon, 1-2% of methanol, 0.1-0.5% of nitric acid and water.

2. Solar panel according to claim 1, characterized in that

The surface coating is synthesized by acid-based nano-silica solution through a sol-gel method.

3. Solar panel according to claim 2, characterized in that

The thickness of the surface coating is 130nm to 170 nm.

4. Solar panel according to claim 1, characterized in that

The plate body comprises a solar panel body and a glass cover plate which is arranged on the solar panel body and used for sealing the solar panel body; and is

The surface coating is integrally formed with the glass cover plate by using a chemical reaction.

5. A method of preparing a surface coating for a solar panel, comprising the steps of:

preparing a sol solution by using 25-30% of ethanol, 25-30% of n-propanol, 20-25% of propylene glycol methyl ether, 1-5% of amorphous silicon, 1-2% of methanol, 0.1-0.5% of nitric acid and water according to the raw materials and the proportion, and standing for 1.5-2.5 hours;

and applying the sol solution to the surface of the plate body facing to the sun direction through an applicator, standing for 5.5 to 6.5 hours, and curing the sol solution to form the surface coating.

Technical Field

The invention relates to the technical field of solar energy, in particular to a solar panel and a preparation method of a surface coating for the solar panel.

Background

Fossil energy such as coal, petroleum and natural gas is indispensable as basic energy for the progress of human civilization and the development of the economic society for 200 years. However, the non-renewable nature of fossil energy and the enormous human consumption thereof are making fossil energy gradually becoming exhausted. The development of solar energy is economical and environment-friendly, and is an effective way for solving energy shortage.

At present, solar photovoltaic power generation technology continues to continuously progress along the directions of high efficiency and low cost, and the solar thermal power generation technology starts to be demonstrated in a large scale.

The solar panel is a core part in the solar power generation system and is also the most valuable part in the solar power generation system. The solar energy is converted into electric energy, or the electric energy is sent to a storage battery for storage, or a load is pushed to work. The absorption and conversion of light by the solar panel directly determine the quality and cost of the whole system. The glass on the solar panel causes reflections and therefore loss of solar panel efficiency. For a solar cell, it is very important to improve the light conversion efficiency by one percent, and the anti-reflection performance of the solar cell panel is often reduced due to some dirt attached to the surface of the solar cell panel, thereby affecting the cell efficiency.

Disclosure of Invention

The present invention aims to overcome one or more of the drawbacks of the existing solar panels to provide a solar panel and a method for the preparation of a surface coating for a solar panel. The solar panel can effectively improve the solar conversion efficiency, solves the problem that a high-temperature bonding coating film is easy to peel off, prolongs the service life to be consistent with a power station, reduces the adhesive force of dust, and has a self-cleaning function.

In particular, the present invention provides a solar panel comprising:

the solar panel comprises a panel body, a solar panel and a solar panel, wherein the panel body is used for receiving solar radiation and converting solar energy into electric energy or heat energy;

the bracket is arranged below and/or around the plate body and is used for supporting the plate body; and

a surface coating coated on the surface of the plate body facing to the sun direction and

the surface coating is composed of the following raw materials:

25-30% of ethanol, 25-30% of n-propanol, 20-25% of propylene glycol methyl ether, 1-5% of amorphous silicon, 1-2% of methanol, 0.1-0.5% of nitric acid and water.

Alternatively, the surface coating is synthesized from an acid-based nanosilica solution by a sol-gel method.

Optionally, the thickness of the coating material is between 130nm and 170 nm.

Optionally, the plate body comprises a solar panel body and a glass cover plate arranged on the solar panel body and used for sealing the solar panel body; and the surface coating and the glass cover plate are integrally formed by utilizing chemical reaction.

In particular, the invention also provides a preparation method of the surface coating for the solar panel, which comprises the following steps:

preparing a sol solution by using 25-30% of ethanol, 25-30% of n-propanol, 20-25% of propylene glycol methyl ether, 1-5% of amorphous silicon, 1-2% of methanol, 0.1-0.5% of nitric acid and water according to the raw materials and the proportion, and standing for 1.5-2.5 hours;

and coating the sol solution on the surface of the plate body facing to the sun direction through an applicator, standing for 5.5 to 6.5 hours, and curing the sol solution to form a surface coating.

The solar panel adopts 25-30% of ethanol, 25-30% of normal propyl alcohol, 20-25% of propylene glycol methyl ether, 1-5% of amorphous silicon, 1-2% of methanol, 0.1-0.5% of nitric acid and water as the surface coating, and the surface coating is synthesized by an acid group nano silicon dioxide solution through a sol-gel method, so that the solar reflectance and the refractive index can be effectively reduced, and the solar energy conversion efficiency is improved.

Furthermore, because the surface coating is integrally formed with the glass cover plate by using chemical reaction, the problem that a high-temperature adhesive coating is easy to peel off is solved, the service life is prolonged to be consistent with that of a power station, the adhesive force of dust is reduced, and meanwhile, the self-cleaning function is realized.

The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

figure 1 is a schematic block diagram of a solar panel according to one embodiment of the present invention;

figure 2 is a flow chart of a method of preparing a surface coating for a solar panel according to one embodiment of the present invention.

Detailed Description

Embodiments of the present invention disclose a solar panel, which may include a plate body, a support, and a surface coating. The plate body is used for receiving solar radiation and converting solar energy into electric energy or heat energy. The bracket may be disposed below and/or around the panel body for supporting the panel body. The surface coating may be applied to the sun-facing surface of the plate body. Particularly, the surface coating is composed of 25% -30% of ethanol, 25% -30% of n-propanol, 20% -25% of propylene glycol methyl ether, 1% -5% of amorphous silicon, 1% -2% of methanol, 0.1% -0.5% of nitric acid and water, and is synthesized by an acid-based nano silicon dioxide solution through a sol-gel method. Therefore, the solar conversion device can effectively reduce the reflectivity and the refractive index of sunlight and further improve the solar conversion efficiency, and has the advantages of stable structure, simple operation, scratch resistance, strong anti-fouling capability and long service life. In some embodiments, the surface coating has a thickness of between 130nm and 170nm, which can increase the solar panel efficiency by 3-4% per day and 6-8% per day. In some preferred embodiments, the surface coating has a thickness of 150nm, a refractive index of 1.2 to 1.4, preferably 1.3, and can reduce solar reflection by about 4%, and the solar panel has an absorption rate T98-99.9%.

In some embodiments of the invention, the surface coating is used in conjunction with an applicator to control liquid deposition by capillary fluid mechanics principles to form a uniform 10 micron fluid film that dries to a 150nm nanostructured surface coating. The surface coating can effectively and further reduce the reflection of light according to the gradient reflection principle.

In some embodiments of the present invention, the panel body may include a solar panel body and a glass cover plate disposed on the solar panel body for covering the solar panel body. In particular, the surface coating may be formed integrally with the glass cover plate using a chemical reaction. The glass cover plate can form a film at normal temperature, is integrated with the assembly glass cover plate through chemical change, thoroughly solves the problem that a high-temperature adhesive coating film is easy to peel off, prolongs the service life to be consistent with that of a power station, reduces the adhesive force of dust, and has a self-cleaning function. The power generation efficiency can be improved by 20% within the stage range.

The embodiment of the invention also discloses a preparation process of the surface coating of the solar panel, which comprises the following steps:

s200: preparing a sol solution by using 25-30% of ethanol, 25-30% of n-propanol, 20-25% of propylene glycol methyl ether, 1-5% of amorphous silicon, 1-2% of methanol, 0.1-0.5% of nitric acid and water according to the raw materials and the proportion, and standing for 1.5-2.5 hours;

s400: and applying the sol solution to the surface of the plate body facing to the sun direction through an applicator, standing for 5.5 to 6.5 hours, and curing the sol solution to form the surface coating.

Preferably, the solution can be left for 2 hours after the solution is prepared, and can be left for 6 hours after the sol solution is coated, so that the forming effect can be improved.

Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.