阅读说明：本技术 一种高防水的太阳能电池的封装材料 (High-waterproof packaging material for solar cell ) 是由 许志 于 2019-08-16 设计创作，主要内容包括：本发明公开了一种高防水的太阳能电池的封装材料,所述高防水封装材料包括封装材料主材、第一个二氧化硅薄膜层和第二个二氧化硅薄膜层,所述第一个二氧化硅薄膜层和第二个二氧化硅薄膜层膜层分别均匀设置在封装主材两边,形成两个二氧化硅薄膜层包覆封装材料主材结构,所述高防水封装材料作为太阳能电池受光面和背光面的组件封装。本发明采用防水性能较好的ETFE、PVDF作为封装材料主材,并通过在封装材料主材表面沉积二氧化硅薄膜层,可以很好的堵塞封装材料主材老化断裂或海水腐蚀后的微细孔洞,大幅度提升该封装材料的防水性能,通过二氧化硅薄膜层厚度、连续性的不同设置可以更好的、有选择性的应用于太阳能电池受光面和背光面的组件封装。(The invention discloses a high-waterproof packaging material for a solar cell, which comprises a packaging material main material, a first silicon dioxide film layer and a second silicon dioxide film layer, wherein the first silicon dioxide film layer and the second silicon dioxide film layer are respectively and uniformly arranged on two sides of the packaging material main material to form a structure that the two silicon dioxide film layers wrap the packaging material main material, and the high-waterproof packaging material is used for packaging components of a light receiving surface and a backlight surface of the solar cell. The invention adopts ETFE and PVDF with better waterproof performance as the main materials of the packaging material, and the silicon dioxide film layer is deposited on the surface of the main materials of the packaging material, so that the tiny holes of the main materials of the packaging material after aging fracture or seawater corrosion can be blocked well, the waterproof performance of the packaging material is greatly improved, and the packaging material can be better and selectively applied to the component packaging of the light receiving surface and the backlight surface of the solar cell through different settings of the thickness and the continuity of the silicon dioxide film layer.)

1. The utility model provides a high waterproof solar cell's packaging material which characterized in that: the high-waterproof packaging material comprises a packaging material main material, a first silicon dioxide film layer and a second silicon dioxide film layer, wherein the first silicon dioxide film layer and the second silicon dioxide film layer are respectively and uniformly arranged on two sides of the packaging material main material to form a structure that the two silicon dioxide film layers wrap the packaging material main material, and the high-waterproof packaging material is used for packaging components of the light receiving surface and the backlight surface of the solar cell.

2. The highly water-resistant encapsulating material for solar cells according to claim 1, wherein: the high-waterproof packaging material is made of at least one of ethylene-tetrafluoroethylene copolymer (ETFE) and polyvinylidene fluoride (PVDF).

3. The highly water-resistant encapsulating material for solar cells according to claim 1, wherein: the first silicon dioxide film layer and the second silicon dioxide film layer are both of a single-layer structure or a multi-layer structure.

4. The highly water-resistant encapsulating material for solar cells according to claim 1, wherein: the thickness of the first silicon dioxide film layer and the second silicon dioxide film layer are both 0.2-2 um.

5. The highly water-resistant encapsulating material for solar cells according to claim 1, wherein: and continuous or discontinuous silica particles are distributed on the first silica film layer and the second silica film layer.

6. The highly water-resistant encapsulating material for solar cells according to claim 1, wherein: the first silicon dioxide film layer and the second silicon dioxide film layer are prepared by at least one of a rotation method, a pulling method and a liquid level descending method.

Technical Field

The invention relates to the field of solar cells, flexible solar cells and solar cell packaging materials, in particular to a high-waterproof flexible solar cell packaging material.

Background

The large-scale solar power plant occupies a large land area, and in order to reduce the occupation of the land of a residential area, the solar power plant is mainly constructed in a remote area with deserted and cool land, but the long-distance electric energy transmission cost is very high. Because the land in the desert area is not worth money and has sufficient sunlight, the desert area is generally the first choice for the construction of solar power plants. In fact, the situation of the sea is similar to that of the desert, the land cannot be occupied, and no sunlight shelters such as buildings, mountains and the like are arranged on the periphery of the sea. The construction of solar power plants in the sea has not previously been considered, mainly because conventional solar cells do not withstand seawater corrosion. With the continuous development of new technologies in the field of solar cells, more and more experts are dedicated to the construction of large-scale solar power generation systems on the sea.

Coastal areas are developed economically, have dense population and limited land resources, and cannot meet the construction of large-scale solar power plants. However, if the solar power plant is built on the sea, precious land resources are not occupied, remote power transmission from a remote area is not needed, the power cost is low, and the energy waste is less. Moreover, the solar power plant is directly built on the sea, can be directly cleaned and cooled by seawater, is convenient and has low cleaning and cooling cost. In summary, the construction of a solar power station on the sea has many advantages, but there are many problems to be solved, such as seawater corrosion resistance, prevention of the massive growth of algae on the surface of the cell, and protection against electric leakage, and therefore, there are higher requirements for solar cell packaging materials, packaging structures, packaging processes, and the like. In addition, the problem of load is also required to be considered in marine installation, and the battery is inconvenient to install and maintain due to the fact that the battery is too heavy in a double-glass packaging mode, so that a portable flexible solar battery is more suitable for a marine solar power plant.

Disclosure of Invention

Compared with the conventional transparent packaging material, the high-waterproof packaging material has better waterproof performance, can effectively resist the corrosion of seawater, can be applied to the packaging of the offshore flexible solar cell, and further realizes the construction of the offshore large-scale solar power plant.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a highly waterproof solar cell packaging material comprises a packaging material main material and first silicon dioxide (SiO)₂) A thin film layer and a second silicon dioxide (SiO)₂) A thin film layer of the first silicon dioxide (SiO)₂) A thin film layer and a second silicon dioxide (SiO)₂) The film layers are respectively and uniformly arranged on two sides of the packaging main material to form two silicon dioxide (SiO)₂) The thin film layer wraps the main material structure of the packaging material, and the high-waterproof packaging material is used as a component package of the light receiving surface and the backlight surface of the solar cell.The solar cell packaging material is used for replacing the traditional packaging material to package the solar cell module, so that the waterproofness of the solar cell can be greatly improved, and the solar cell is effectively prevented from being corroded by seawater.

Further, the main material of the packaging material is at least one of ethylene-tetrafluoroethylene copolymer (ETFE) and polyvinylidene fluoride (PVDF).

Further, the first silicon dioxide (SiO)₂) A thin film layer and a second silicon dioxide (SiO)₂) The thin film layers are of single-layer structures or multi-layer structures;

further, the first silicon dioxide (SiO)₂) A thin film layer and a second silicon dioxide (SiO)₂) The thickness of the film layer is 0.2-2 um;

further, the first silicon dioxide (SiO)₂) A thin film layer and a second silicon dioxide (SiO)₂) Continuous or discontinuous silicon dioxide particles are distributed on the film layer;

further, the first silicon dioxide (SiO)₂) A thin film layer and a second silicon dioxide (SiO)₂) The thin film layer is prepared by at least one of a rotation method, a pulling method and a liquid level descending method.

From the above description of the structure of the present invention, compared with the prior art, the present invention has the following advantages:

according to the invention, ETFE and PVDF with good waterproof performance are adopted as main materials of the packaging material, and the silicon dioxide film layer is deposited on the surface of the main material of the packaging material, because the silicon dioxide is amorphous, a large number of groups on the surface can be well bonded with the main material of the packaging material to form a stable structure, so that the waterproof performance of the packaging material is greatly improved; specifically, the silicon dioxide particles of the silicon dioxide film layer can well block the micro holes of the packaging material after aging and cracking or seawater corrosion, can effectively prevent seawater from permeating into the solar cell through the micro holes, and avoids the solar cell from being damaged, and moreover, the silicon dioxide film layer can be better and selectively applied to the component packaging of the light receiving surface and the backlight surface of the solar cell through different settings of the thickness and the continuity of the silicon dioxide film layer.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic structural diagram of a highly waterproof solar cell encapsulant according to an embodiment of the present invention;

FIG. 2 shows SiO of the silicon dioxide layer in the solar cell packaging material with high water resistance according to the embodiment of the invention₂A schematic structural diagram of a discontinuous distribution of particles;

FIG. 3 shows SiO of the silicon dioxide layer in the solar cell packaging material with high water resistance according to the embodiment of the invention₂A schematic diagram of a continuous particle distribution structure;

FIG. 4 shows SiO of the silicon dioxide layer in the solar cell packaging material with high water resistance according to the embodiment of the invention₂A schematic diagram of particles plugging cracks in a primary material of an encapsulating material;

fig. 5 is a schematic structural view of a flexible solar cell encapsulated by the highly waterproof solar cell encapsulating material according to the embodiment of the invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Examples

As shown in FIG. 1, a highly waterproof solar cell packaging material A comprises a packaging material main material 12, a first silicon dioxide (SiO)₂) A thin film layer 11 and a second silicon dioxide (SiO)₂) A thin film layer 13; the first silicon dioxide (SiO)₂) A thin film layer 11 and a second silicon dioxide (SiO)₂) The thin film layer 13 has uniform film layer and is respectively arranged at two sides of the packaging material main material 12 to form two silicon dioxide (SiO)₂) The film layers 11 and 13 cover the main packaging material 12 structure; the packaging material A can be used as solar energy electricityAnd (4) packaging components of the light receiving surface and the backlight surface of the pool.

Wherein the main material 12 of the packaging material is at least one of ethylene-tetrafluoroethylene copolymer (ETFE) and polyvinylidene fluoride (PVDF). The first silicon dioxide (SiO)₂) A thin film layer 11 and a second silicon dioxide (SiO)₂) The thin film layer 13 is of a single-layer structure or a multi-layer structure; the first silicon dioxide (SiO)₂) A thin film layer 11 and a second silicon dioxide (SiO)₂) The thickness of the thin film layer 13 is 0.2-2 um; the first silicon dioxide (SiO)₂) A thin film layer 11 and a second silicon dioxide (SiO)₂) The film layer 13 is distributed with continuous or discontinuous silicon dioxide particles; the first silicon dioxide (SiO)₂) A thin film layer 11 and a second silicon dioxide (SiO)₂) The thin film layer 13 is prepared by at least one of a spin method, a czochralski method, and a liquid level-down method.

The first silicon oxide thin film layer 11 and the second silicon oxide thin film layer 13 may have a single-layer structure as shown in fig. 2, in which SiO is included₂The particles 11-1 and 13-1 are not continuous, the structural high-waterproof packaging material can be used for packaging the light receiving surface of the solar cell, the waterproof performance of the packaging material can be improved, and reduction of cell conversion efficiency caused by excessive shading can be avoided. The first silicon oxide thin film layer 11 and the second silicon oxide thin film layer 13 may have a multilayer structure as shown in FIG. 3, in which SiO is present in a plurality of layers₂The particles 11-1 and 13-1 are complementarily embedded and are in a continuous structure, the structural high-waterproof packaging material can be used for packaging the backlight surface of the solar cell, and the waterproof performance of the packaging material can be comprehensively improved, so that the solar cell can resist the corrosion of seawater. As shown in fig. 4, when the crack 2 occurs in the main material 12 of the encapsulant, if there is no silica thin film layer 11 on the surface thereof, seawater can easily penetrate into the battery through the crack 2, so that the battery is rapidly damaged, but because the silica particles 11-1 of the silica thin film layer 11 on the surface of the main material 12 of the encapsulant can rapidly block the crack, the seawater can be prevented from further penetrating, the service life of the solar battery in the offshore application can be prolonged, and thus the large-scale construction of the offshore solar power plant can be realized. As shown in fig. 5, by the present inventionAccording to the flexible solar cell panel packaged by the high-waterproof packaging material, the EVA packaging material 15, the first silicon dioxide film layer 11, the packaging material main material ETFE12 and the second silicon dioxide film layer 13 are sequentially arranged on two sides of the solar cell 14. The silicon dioxide film layers on the two sides of the main material ETFE12 of the packaging material can effectively improve the waterproof performance, and further prevent the flexible solar cell from being damaged due to the fact that water vapor permeates into the cell when the flexible solar cell is applied at sea.

According to the invention, ETFE and PVDF with good waterproof performance are adopted as main materials of the packaging material, and the silicon dioxide film layer is deposited on the surface of the main material of the packaging material, because the silicon dioxide is amorphous, a large number of groups on the surface can be well bonded with the main material of the packaging material to form a stable structure, so that the waterproof performance of the packaging material is greatly improved; specifically, the silicon dioxide particles of the silicon dioxide film layer can well block the micro holes of the packaging material after aging and cracking or seawater corrosion, can effectively prevent seawater from permeating into the solar cell through the micro holes, and avoids the solar cell from being damaged, and moreover, the silicon dioxide film layer can be better and selectively applied to the component packaging of the light receiving surface and the backlight surface of the solar cell through different settings of the thickness and the continuity of the silicon dioxide film layer.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.