High quality coated patterned glass for photovoltaics

Abstract

The application discloses high-quality coated pattern glass for photovoltaics and belongs to the technical field of pattern glass. The upper and lower surfaces of the pattern glass are provided with pattern structures, the upper surface is provided with two kinds of pattern structures, namely, pattern 1 and pattern 2, and the lower surface is provided with one kind of pattern structure, namely, pattern 3; the pattern 1 is a convex strip structure parallel to the long side of the glass; and the pattern 2 is located at a low-lying area in the middle of the convex strip structure. The glass pattern of the application can avoid up-and-down jumping of a roller during roller coating by special design, and the combination of the two kinds of pattern structures with different structures can solve the anti-dazzling problem in different directions.

Description

Technical Field

[0001] This invention belongs to the field of patterned glass technology, and specifically relates to a high-quality coated patterned glass for photovoltaic applications. Background Technology

[0002] Patterned glass for photovoltaic (PV) applications is used as the front cover glass for PV modules. Currently, conventional PV module front cover glass features an irregular, raised, velvety texture on the outside, primarily controlled by roughness indicators, resulting in poor anti-glare performance. Anti-glare glass typically uses pyramidal or uneven textures, which are not very consistent. The presence of height differences in patterned glass causes the rollers to bounce up and down with the pattern during roll coating, affecting the uniformity of the coating and thus impacting the coating quality. Summary of the Invention

[0003] To address the problems existing in the prior art, the present invention aims to provide a high-quality coated patterned glass for photovoltaic applications. The glass pattern is specially designed to prevent the rollers from jumping up and down during the coating process. Two different pattern structures are combined to solve the anti-glare problem in different directions.

[0004] To solve the above problems, the technical solution adopted by the present invention is as follows:

[0005] A high-quality coated patterned glass for photovoltaic applications has a patterned structure on both the upper and lower surfaces. The upper surface has two patterned structures, namely pattern 1 and pattern 2, and the lower surface has one patterned structure, namely pattern 3. Pattern 1 is a raised strip structure parallel to the long side of the glass. Pattern 2 is located at the trough in the middle of the raised strip structure.

[0006] The patterned glass with high-quality coating for photovoltaic applications has an intersection point between pattern 2 and pattern 1.

[0007] The high-quality coated patterned glass for photovoltaic applications has a raised structure with an arc or triangular cross-section.

[0008] The patterned glass with high-quality coating for photovoltaic applications has a pattern 1 that is higher than the pattern 2. The pattern 1 is always higher than the pattern 2. The pattern 1 serves to support the height of the roller. As long as the height of the pattern 1 is consistent and the height of the pattern 2 is lower than the pattern 1, the roller will not jump.

[0009] The patterned glass with high-quality coating for photovoltaic applications has a pattern 3 structure that is either a hexagonal or a square pattern.

[0010] The patterned glass with high-quality coating for photovoltaic applications has a pattern 1 direction parallel to the transport direction during roll coating.

[0011] Beneficial effects: Compared with existing technologies, the advantages of this invention include:

[0012] The glass pattern of this invention is specially designed to avoid the rollers from bouncing up and down during the coating process. It also uses two different pattern structures to solve the problem of anti-glare in different directions.

[0013] The coating roller rotates at a stable and uniform speed during the coating process. If the roller bounces up and down during the coating process, it will affect the stability of the coating and thus affect the uniformity of the film thickness. Poor uniformity will be reflected in the appearance of the coated glass, such as rainbow patterns, and poor optical effects, such as low light transmittance. Attached Figure Description

[0014] Figure 1 This is a test appearance image of the glass after coating in Example 1;

[0015] Figure 2 This is a test appearance image of the glass after coating in Example 2;

[0016] Figure 3 This is a test appearance image of glass after coating in Example 3;

[0017] Figure 4 This is a test appearance image of the glass after coating in Comparative Example 1.

[0018] Figure 5 This is a schematic diagram of the glass coating in this application;

[0019] Figure 6 This is a schematic diagram of existing glass coating technology. Detailed Implementation

[0020] To make the above-mentioned objectives, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to specific examples.

[0021] Example 1

[0022] like Figure 1 As shown, pattern 1 is a raised strip structure parallel to the long side of the glass, with a raised height of 60μm. Pattern 2 has an arc-shaped cross-section and a height of 50μm. The back pattern is a hexagonal fabric pattern. These patterns are made using embossing rollers with corresponding pattern structures. The embossing rollers have two types of concave patterns: one is a concave strip structure with a depth of 70μm, and the other is a concave structure with an arc-shaped cross-section and a depth of 65μm. During glass production, glass with patterns 1 and 2 is directly rolled out, as shown... Figure 5 As shown, the roller does not bounce up and down during the roller coating process, and the film uniformity is good. Figure 1 After the structural glass was coated, its appearance was tested and no rainbow-like patterns were found on the surface.

[0023] Example 2

[0024] like Figure 2As shown, pattern 1 is a raised strip structure parallel to the long side of the glass with a raised height of 60μm. Pattern 2 has a triangular cross-section with a raised height of 40μm, and the back pattern is a hexagonal fabric pattern. Figure 2 After the structural glass was coated, its appearance was tested and no rainbow-like patterns were found on the surface.

[0025] Example 3

[0026] Figure 3 The patterned glass shown has two patterns: Pattern 1 is a raised strip structure parallel to the long side of the glass, with a raised height of 50μm; Pattern 2 has an arc-shaped cross-section for the raised structure, with a raised height of 45μm; and the pattern on the back is a hexagonal fabric pattern. Testing showed that the coated glass exhibits no rainbow-like patterns on its surface.

[0027] Comparative Example 1

[0028] like Figure 4 As shown, the upper surface of the patterned glass has a pyramid structure with a height of 60μm, and the lower surface has a hexagonal textured structure; during the roll coating process, the roller jumps up and down, as... Figure 6 As shown. After testing, Figure 4 The appearance of the structural glass after coating is that the surface has obvious rainbow patterns (the roller jumping up and down during the roller coating process affects the coating thickness and the uniformity of the film layer).

Claims

1. A high-quality coated patterned glass for photovoltaic applications, characterized in that, Both the upper and lower surfaces of the glass are patterned. The upper surface has two patterned structures, namely pattern 1 and pattern 2, and the lower surface has one patterned structure, namely pattern 3. Pattern 1 is a raised strip structure parallel to the long side of the glass. Pattern 2 is located at the trough in the middle of the raised strip structure. Pattern 2 and pattern 1 have an intersection point. The height of pattern 1 is higher than the height of pattern 2. The structure of pattern 3 is either a hexagonal or a square pattern. The cross-section of the raised structure of pattern 2 is arc-shaped or triangular. The direction of pattern 1 is parallel to the transport direction during roll coating.

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