Vertical pattern glass with multi-layer pattern structure

Abstract

The invention discloses vertical pattern glass with a multi-layer pattern structure, which comprises a glass substrate, the glass substrate is provided with a light incident surface and a light emergent surface which are opposite to each other, the light incident surface and / or the light emergent surface of the glass substrate are / is provided with a bottom pattern structure, and the bottom pattern structure is provided with a surface pattern structure. An antireflection layer is arranged on the light incident surface of the surface layer pattern structure; the bottom layer pattern structure is composed of a plurality of protruding stripes, the protruding stripes extend in the transverse direction of the glass base body, the distances between the adjacent protruding stripes are unequal, the widths of the different protruding stripes are unequal, all positions of the same protruding stripe have different widths, and the protruding stripes have or do not have intersection points. The surface layer pattern structure at least comprises a light trapping pattern layer, the surface layer pattern structure further comprises or does not comprise a vertical stripe structure, the vertical stripe structure is arranged on the bottom layer pattern structure, and the light trapping pattern layer is arranged on the bottom layer pattern structure or the vertical stripe structure.

Description

Technical Field

[0001] The invention relates to the technical field of photovoltaic glass, and in particular to a vertical-grained glass with a multi-layer pattern structure. Background Art

[0002] At present, the front glass of photovoltaic modules generally uses a micro-suede structure on the light-incoming side and an embossed structure on the back-lighting side. The design of the pattern structure on the glass surface is mostly aimed at improving the light transmittance, thereby increasing the power generation efficiency of the solar cell module, without considering the high requirements for anti-glare and decorative effects in specific application occasions (such as airports, office buildings, large urban buildings, etc.). At the same time, in the actual operation of photovoltaic module power stations, the existing micro-suede structure on the light-incoming side of the glass surface is also prone to dust accumulation and is difficult to clean, which will affect the photoelectric conversion rate of the module. Summary of the invention

[0003] The purpose of the present invention is to design a vertical-grained glass with a multi-layer pattern structure to solve the problems that the existing photovoltaic glass has no anti-glare effect and is easy to accumulate dust, resulting in low photoelectric conversion rate of photovoltaic components.

[0004] To achieve the above object, the present invention is implemented by the following technical solutions:

[0005] The present invention provides a vertical-striped glass with a multi-layer pattern structure, the vertical-striped glass comprising a glass substrate; the glass substrate has a light incident surface and a light emitting surface opposite to each other, and a bottom-layer pattern structure is arranged on the light incident surface and / or the light emitting surface of the glass substrate, a surface-layer pattern structure is further arranged on the bottom-layer pattern structure, and an anti-reflection layer is arranged on the light incident surface of the surface-layer pattern structure;

[0006] Among them, the bottom pattern structure is composed of a plurality of raised stripes, and the plurality of raised stripes extend in the transverse direction of the glass substrate, and the spacing between adjacent raised stripes is not equal, the widths of different raised stripes are not equal, and different places on the same raised stripe have different widths, and there are or are no intersections between the plurality of raised stripes; the surface pattern structure at least includes a light-trapping pattern layer with a light-trapping function, and the surface pattern structure also includes or does not include a vertical stripe structure, and the vertical stripe structure is arranged on the bottom pattern structure, and the light-trapping pattern layer is arranged on the bottom pattern structure or on the vertical stripe structure.

[0007] Furthermore, a vertical-grained glass with a multi-layer pattern structure: the thickness of the glass substrate is 1.0 to 10.0 mm.

[0008] Furthermore, a vertical-striped glass with a multi-layer pattern structure: the width of the raised stripes is set to 0.2-5.0 mm, the spacing between a plurality of the raised stripes is set to 1.0-10.0 mm, and the height of the raised stripes protruding from the light incident surface or the light exit surface is 10.0-1000.0 μm.

[0009] Furthermore, a vertical-striped glass with a multi-layer pattern structure: the raised stripes are arranged as straight lines, curves or wavy lines.

[0010] Furthermore, a vertical-striped glass with a multi-layer pattern structure is provided: a plurality of the raised stripes have intersections and grooves are formed between the intersecting raised stripes, and the openings of all the grooves extend toward the same side of the glass substrate.

[0011] Furthermore, a vertical-grained glass with a multi-layer pattern structure: the light-trapping pattern layer is arranged to be an uneven morphology structure, and its roughness Ra satisfies 0.5 μm≤Ra≤2.0 μm.

[0012] Furthermore, a vertical-line glass with a multi-layer pattern structure is provided: the vertical-line structure is configured to be the same as the structure of the bottom pattern structure but smaller in size than the bottom pattern structure.

[0013] Furthermore, a vertical-grained glass with a multi-layer pattern structure: the bottom layer pattern structure is formed by calendering.

[0014] Furthermore, a vertical-grained glass with a multi-layer pattern structure is provided: the vertical-grained structure is formed by calendering, and the light-trapping pattern layer is formed by calendering or chemical etching.

[0015] Specifically, the vertical-striped glass with a multi-layer pattern structure designed by the present invention has a bottom-layer pattern structure arranged on the light-entering surface and / or light-emitting surface of the glass substrate, wherein the bottom-layer pattern structure is composed of a plurality of convex pattern structures extending continuously in the transverse direction of the glass substrate, and a surface pattern structure is also arranged on the convex pattern, and the bottom-layer pattern structure is formed by a vertical-striped convex structure. The convex stripes are arranged irregularly in the longitudinal direction, and there are intersections between the convex stripes in the transverse direction. All the intersecting convex stripes extend in one direction, ensuring that all the grooves can extend from the intersection to the same edge of the glass, and forming a micron-level concave-convex pattern (light-trapping pattern layer) on the surface of each pattern.

[0016] Beneficial effects of the present invention:

[0017] (1) The vertically-grained glass with a multi-layered pattern structure designed by the present invention can solve the problem that the existing photovoltaic modules do not have an anti-glare effect and the module surface is prone to dust accumulation, thereby causing a low photoelectric conversion rate after being used in the photovoltaic modules.

[0018] (2) The vertical-striped glass with a multi-layer patterned structure designed by the present invention increases the diffuse reflection effect by arranging a laterally continuously extending underlying patterned structure on the surface of the glass substrate and forming a micron-scale concave-convex pattern (light-trapping pattern layer) and an anti-reflection layer on the surface of the underlying patterned structure, thereby improving the light-trapping effect of the concave-convex pattern surface, and making the vertical-striped glass have a better anti-glare effect.

[0019] (3) In the vertical-striped glass with a multi-layer patterned structure designed by the present invention, intersections may be designed between the raised stripes in the bottom patterned structure, but all the crossed raised stripes extend in one direction to ensure that the grooves formed by all the crossed raised stripes extend from the intersections to the same edge of the glass substrate, thereby ensuring that the water flow on the surface of the glass substrate can flush away the accumulated dust. The groove structure formed in the present invention can fully divert rainwater, so that during the redirection process, the rainwater can flush the inside of the gaps between the raised stripes by relying on its own inertia, thereby achieving the effect of cleaning the accumulated dust on the surface of the glass and avoiding the influence of the accumulated dust on the photoelectric conversion rate of the photovoltaic module. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 A schematic structural diagram of a vertically-grained glass having a multi-layered pattern structure provided in Example 1 of the present invention;

[0022] Figure 2 A schematic structural diagram of a vertically-grained glass having a multi-layered pattern structure provided in Example 2 of the present invention;

[0023] Figure 3 A top view of the bottom pattern structure in a vertical-grained glass with a multi-layer pattern structure provided in Example 1 and Example 2 of the present invention.

[0024] Markings in the figure: 1-glass substrate, 2-bottom pattern structure, 3-surface pattern structure, 4-anti-reflection layer, 21-raised stripes, 22-intersection points, 23-grooves, 31-vertical stripe structure, 32-light-trapping pattern layer. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "top", "bottom", etc., indicating the position or positional relationship, are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. Moreover, the terms "first", "second", etc. are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein.

[0027] Example 1

[0028] like Figure 1 and Figure 3 As shown, this embodiment 1 provides a vertical-striped glass with a multi-layer pattern structure, and the vertical-striped glass includes a glass substrate 1, and the thickness thereof is 5.0 mm;

[0029] The glass substrate 1 has a light incident surface and a light emitting surface relative to each other, and a bottom pattern structure 2 is formed on the light incident surface of the glass substrate 1 by a calendering process; wherein the bottom pattern structure 2 is composed of a plurality of raised stripes 21 (the raised stripes 21 include straight lines, curves or wavy lines), and the width of the raised stripes 21 is set to 0.2-5.0 mm, the spacing between the raised stripes 21 is set to 1.0-10.0 mm, the height of the raised stripes 21 protruding from the light incident surface is 10.0-1000.0 μm, a plurality of the raised stripes 21 extend in the transverse direction of the glass substrate 1, and the spacing between adjacent raised stripes 21 is unequal, the widths of different raised stripes 21 are unequal, different places on the same raised stripe 21 have different widths, some of the raised stripes 21 have intersections 22, and grooves 23 are formed between the crossed raised stripes 21, and the openings of all the grooves 23 extend toward the same side of the glass substrate 1;

[0030] A surface pattern structure 3 is also arranged on the bottom pattern structure 2, and the surface pattern structure 3 includes a light-trapping pattern layer 32 with a light-trapping function. The light-trapping pattern layer 32 is arranged to have an uneven morphology structure, and its roughness Ra satisfies 0.5μm≤Ra≤2.0μm. The light-trapping pattern layer 32 is arranged on the bottom pattern structure 2, and can be formed by physical calendering or by chemical etching; an anti-reflection layer 4 is arranged on the light incident surface of the surface pattern structure 3 (light-trapping pattern layer 32).

[0031] In the vertical-grained glass with a multi-layered pattern structure of Example 1, the bottom pattern structure 2 is formed by a plurality of raised stripes 21, which extend horizontally on the surface of the glass substrate 1 and are irregularly arranged in the vertical direction, and there are intersections 22 between the raised stripes 21 in the horizontal direction, and all the intersecting raised stripes 21 extend in one direction, ensuring that all the grooves can extend from the intersections to the same glass edge, thereby ensuring the effect of water flow flushing the dust accumulation on the surface of the glass substrate 1, preventing the formation of a slot, and avoiding dust accumulation. At the same time, the vertical-grained glass of Example 1 also forms a layer of surface pattern structure (i.e., an irregular light-trapping pattern layer 32 with an uneven morphology) on the surface of the bottom pattern structure 2. The use of the above-mentioned bottom pattern structure 2 can increase the effect of diffuse reflection, and the uneven pits (light-trapping pattern layer 32) formed on its surface can play a certain light-trapping role, thereby effectively reducing the reflectivity while increasing the transmittance, further increasing the anti-glare effect of the vertical-grained glass.

[0032] The vertical-grained glass designed in Example 1 is also provided with an anti-reflection layer 4, which can effectively reduce its reflectivity and the intensity of diffuse reflected light while increasing the light transmittance of the glass, thereby achieving a better anti-glare effect. Under sunlight of 100,000 lux, the maximum reflective brightness within a 60° observation angle range is 50,000 cd / m 2 the following.

[0033] Example 2

[0034] like Figure 2 and Figure 3 As shown, this embodiment 2 provides a vertical-striped glass with a multi-layer pattern structure, and the vertical-striped glass includes a glass substrate 1, and the thickness thereof is 5.0 mm;

[0035] The glass substrate 1 has a light incident surface and a light emitting surface relative to each other, and a bottom pattern structure 2 is formed on the light incident surface of the glass substrate 1 by a calendering process; wherein the bottom pattern structure 2 is composed of a plurality of raised stripes 21 (the raised stripes 21 include straight lines, curves or wavy lines), and the width of the raised stripes 21 is set to 0.2-5.0 mm, the spacing between the raised stripes 21 is set to 1.0-10.0 mm, the height of the raised stripes 21 protruding from the light incident surface is 10.0-1000.0 μm, a plurality of the raised stripes 21 extend in the transverse direction of the glass substrate 1, and the spacing between adjacent raised stripes 21 is unequal, the widths of different raised stripes 21 are unequal, different places on the same raised stripe 21 have different widths, some of the raised stripes 21 have intersections 22, and grooves 23 are formed between the crossed raised stripes 21, and the openings of all the grooves 23 extend toward the same side of the glass substrate 1;

[0036] A surface pattern structure 3 is also arranged on the bottom pattern structure 2, and the surface pattern structure 3 includes a vertical pattern structure 31 and a light-trapping pattern layer 32 with a light-trapping function, and the light-trapping pattern layer 32 is arranged as an uneven morphology structure, and its roughness Ra satisfies 0.5μm≤Ra≤2.0μm, the vertical pattern structure 31 is arranged on the bottom pattern structure 2, and the vertical pattern structure 31 is arranged as a pattern structure with the same structure as the bottom pattern structure 2 but smaller in size than the bottom pattern structure 2, and the light-trapping pattern layer 32 is arranged on the bottom pattern structure 2, which can be formed by physical calendering or by chemical etching; an anti-reflection layer 4 is arranged on the light-trapping pattern layer 32.

[0037] The difference between Example 2 and Example 1 is that the vertical-grained glass of Example 2 is provided with a vertical-grained structure 31 between the bottom-layer patterned structure 2 and the light-trapping patterned layer 32. The vertical-grained structure 31 is a layer of patterned structure superimposed on the bottom-layer patterned structure 2. An irregular concave-convex morphology structure (i.e., the light-trapping patterned layer 32) is formed on the surface of the vertical-grained structure 31. An anti-reflection layer is coated on the concave-convex morphology surface. This structural design further enhances the diffuse reflection effect and further reduces the reflection intensity, thereby achieving the best light-trapping effect and the best anti-glare effect. Under sunlight of 100,000 lux, the maximum reflective brightness of the vertical-grained glass of Example 2 within a 60° observation angle range is 30,000 cd / m 2 the following.

[0038] The above are preferred embodiments of the present invention and are only used to explain the present invention, not to limit the present invention. Any obvious changes or modifications derived from the technical solution of the present invention are still within the protection scope of the present invention.

Claims

1. A vertically woven glass with a multi-layer pattern structure, characterized in that: The vertical-grained glass comprises a glass substrate (1); The glass substrate (1) has a light incident surface and a light emitting surface opposite to each other, and a bottom pattern structure (2) is arranged on the light incident surface and / or the light emitting surface of the glass substrate (1), a surface pattern structure (3) is also arranged on the bottom pattern structure (2), and an anti-reflection layer (4) is arranged on the light incident surface of the surface pattern structure (3); The bottom pattern structure (2) is composed of a plurality of raised stripes (21), the plurality of raised stripes (21) extend in the transverse direction of the glass substrate (1), the spacing between adjacent raised stripes (21) is different, the widths of different raised stripes (21) are different, different locations on the same raised stripe (21) have different widths, and there may or may not be intersections (22) between the plurality of raised stripes (21); The surface pattern structure (3) at least comprises a light-trapping pattern layer (32) having a light-trapping function, and the surface pattern structure (3) further comprises or does not comprise a vertical pattern structure (31), wherein the vertical pattern structure (31) is arranged on the bottom pattern structure (2), and the light-trapping pattern layer (32) is arranged on the bottom pattern structure (2) or on the vertical pattern structure (31).

2. The vertically-grained glass with a multi-layered pattern structure according to claim 1, characterized in that: The thickness of the glass substrate (1) is 1.0 to 10.0 mm.

3. The vertically-grained glass with a multi-layered pattern structure according to claim 1, characterized in that: The width of the raised stripes (21) is set to 0.2-5.0 mm, the spacing between a plurality of the raised stripes (21) is set to 1.0-10.0 mm, and the height of the raised stripes (21) protruding from the light incident surface or the light exit surface is 10.0-1000.0 μm.

4. The vertically-grained glass with a multi-layered pattern structure according to claim 1, characterized in that: The raised stripes (21) are arranged in a straight line, a curved line or a wavy line structure.

5. The vertically-grained glass with a multi-layered pattern structure according to claim 1, characterized in that: There are intersections (22) between the plurality of raised stripes (21), and grooves (23) are formed between the crossed raised stripes (21), and the openings of all the grooves (23) extend toward the same side of the glass substrate (1).

6. The vertically-grained glass with a multi-layered pattern structure according to claim 1, characterized in that: The light-trapping pattern layer (32) is configured as a concave-convex morphology structure, and its roughness Ra satisfies 0.5 μm≤Ra≤2.0 μm.

7. The vertically-grained glass with a multi-layered pattern structure according to claim 1, characterized in that: The vertical pattern structure (31) is configured as a pattern structure having the same structure as the bottom pattern structure (2) but a smaller size than the bottom pattern structure (2).

8. The vertically-grained glass with a multi-layered pattern structure according to any one of claims 1 to 7, characterized in that: The bottom layer pattern structure (2) is formed by calendering.

9. The vertically-grained glass with a multi-layered pattern structure according to any one of claims 1 to 7, characterized in that: The vertical grain structure (31) is formed by calendering, and the light-trapping pattern layer (32) is formed by calendering or chemical etching.

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