CN219476691U - Conductive glass and photovoltaic module having the same - Google Patents

Abstract

The utility model relates to the technical field of photovoltaic modules, in particular to conductive glass and a photovoltaic module with the conductive glass. The conductive glass includes: comprises an anti-reflection layer, a substrate body and a conductive layer which are sequentially laminated from top to bottom; wherein, a pattern structure is arranged on the surface of the substrate body near one side of the anti-reflection layer. According to the conductive glass, the added anti-reflection layer and the pattern structure arranged on the surface of the substrate body close to one side of the anti-reflection layer enable the conductive glass to have light transmittance exceeding 85%, so that the conductive glass is good in light transmittance, high in light utilization rate and good in anti-dazzle effect.

Description

Conductive glass and photovoltaic module having the same

Technical Field

The utility model relates to the technical field of photovoltaic modules, in particular to conductive glass and a photovoltaic module with the conductive glass.

Background

At present, a thin film solar photovoltaic module includes: the cover plate, the thin film battery layer, the packaging adhesive film and the back plate are shown in fig. 1, wherein the cover plate is float glass with a conductive layer, and the float surface of the float glass with the conductive layer is particularly easy to form specular reflection, so that glare is caused, the absorption of sunlight by the thin film battery layer is influenced, serious light pollution is caused, and the safety of the float glass is greatly reduced when the float glass is used at the positions of highways, airports and the like.

Disclosure of Invention

The utility model aims to solve the technical problems that: in order to overcome the defects of the existing thin film solar photovoltaic module in light utilization and anti-dazzle effect, the utility model provides the conductive glass which is good in light transmittance, high in light utilization rate and good in anti-dazzle effect.

The technical scheme adopted for solving the technical problems is as follows: a conductive glass comprises an antireflection layer, a substrate body and a conductive layer which are sequentially laminated from top to bottom; wherein, a pattern structure is arranged on the surface of the substrate body near one side of the anti-reflection layer. The anti-reflection layer is used for increasing the light transmittance, the arranged pattern structure is favorable for the combination between the anti-reflection layer and the substrate body, in the embodiment, the conductive glass has the light transmittance exceeding more than 85%, the arranged pattern structure increases the diffuse reflection and diffuse transmission effects, the ratio of the brightness of reflection and the absorption of incident light by the battery observed by human eyes can be effectively reduced, the light utilization rate is high, the pattern structure has the light trapping and anti-dazzling effects, and the optical performance is improved.

Further, specifically, the pattern structure is in a concave-convex shape or a convex-concave shape in order to further improve the light trapping and anti-glare effects and optical properties.

Further, specifically, in order to increase the transmittance, the reflectance of light and the intensity of reflected light are reduced, and the antireflection layer is at least one layer.

Preferably, the number of the anti-reflection layers is one, the thickness of the anti-reflection layers is 80 nm-150 nm, and the refractive index of the anti-reflection layers is 1.20-1.35.

Preferably, the number of the anti-reflection layers is two, namely a first film layer and a second film layer arranged on the first film layer, wherein the first film layer is arranged on the surface of the substrate body with the pattern structure; the thickness of the first film layer is 50-90nm; the refractive index of the first film layer is 1.40-1.46; the thickness of the second film layer is 100-140nm, and the refractive index of the second film layer is 1.22-1.32.

Further, specifically, in order to increase the haze of the surface of the substrate body near the side of the antireflection layer, the light utilization efficiency and the appearance quality are improved, and the surface roughness of the substrate body near the side of the antireflection layer is 0.2 to 1.4 μm.

Further, specifically, the surface roughness of the substrate body at a side away from the antireflection layer is less than 0.05 μm.

Further, specifically, in order to tightly adhere between the substrate body and the conductive layer, penetration of sodium ions in the substrate body to the conductive layer is prevented, and a dense layer is provided between the substrate body and the conductive layer.

Further, specifically, the material of the conductive layer is a metal oxide; the substrate body is made of ultra-white glass.

A photovoltaic module comprises a cover plate, a battery layer, an encapsulation adhesive film layer and a back plate which are sequentially stacked from top to bottom; the cover plate is conductive glass as described above.

The utility model has the beneficial effects that the conductive glass has the light transmittance exceeding 85% through the added anti-reflection layer and the pattern structure arranged on the surface of the substrate body near one side of the anti-reflection layer, the arranged pattern structure can effectively reduce the brightness of reflected light and the absorption ratio of incident light to the battery observed by human eyes, the light utilization rate is high, the pattern structure has the light trapping and anti-dazzle effects, and the optical performance is improved.

Drawings

The utility model will be further described with reference to the drawings and examples.

Fig. 1 is a schematic diagram of a prior art structure.

Fig. 2 is a schematic structural diagram of a conductive glass according to an embodiment of the present utility model.

Fig. 3 is a schematic structural diagram of a photovoltaic module according to an embodiment of the present utility model.

11, an antireflection layer; 12. a substrate body; 13. a conductive layer; 14. a pattern structure; 1. a cover plate; 2. a battery layer; 3. packaging the adhesive film layer; 4. a back plate.

Detailed Description

The utility model will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the utility model and therefore show only the structures which are relevant to the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Example 1

As shown in fig. 2, in a first embodiment of the present utility model, a conductive glass includes an anti-reflection layer 11, a substrate body 12 and a conductive layer 13 stacked in this order from top to bottom; wherein a patterned structure 14 is provided on the surface of the substrate body 12 on the side close to the anti-reflection layer 11. The anti-reflection layer 11 is used for increasing the light transmittance, the arranged pattern structure 14 is beneficial to the combination between the anti-reflection layer 11 and the substrate body 12, in the embodiment, the conductive glass has the light transmittance exceeding 85%, the arranged pattern structure 14 can effectively reduce the brightness of reflection light observed by human eyes and the absorption ratio of incident light by the battery, the light utilization rate is high, the pattern structure 14 has the light trapping and anti-glare effects, and the optical performance is improved.

In this embodiment, the pattern structure 14 has a concave-convex shape or a convex-concave shape, specifically, the concave-convex shape or the convex-concave shape is formed on one side surface of the substrate body 12 by roll forming preparation or chemical etching preparation, and the concave-convex shape or the convex-concave shape increases the effects of diffuse reflection and diffuse transmission, further improves the effects of light trapping and anti-glare, and further improves the optical performance.

In this embodiment, the number of the antireflection layers 11 is one, the thickness of the antireflection layer 11 is 80nm to 150nm, the refractive index of the antireflection layer 11 is 1.20 to 1.35, the transmittance of light is improved by 2.0% by the antireflection layer 11, and the reflectance of light and the intensity of reflected light are reduced.

In another embodiment, the number of the anti-reflection layers 11 is two, namely a first film layer and a second film layer disposed on the first film layer, wherein the first film layer is disposed on the surface of the substrate body 12 with the pattern structure; the thickness of the first film layer is 50-90nm; the refractive index of the first film layer is 1.40-1.46; the thickness of the second film layer is 100-140nm, the refractive index of the second film layer is 1.22-1.32, the light transmittance is further improved, and the light reflectivity and the reflected light intensity are further reduced.

The material of the antireflection layer 11 is oxide, and the antireflection layer 11 is formed by coating a surface of the substrate body provided with the pattern structure 14 by roll coating, spray coating, lift-off, or the like _， The antireflection layer 11 may be provided as a single layer, a double layer, or a multilayer, and the transmittance and Lab values of the conductive glass are adjusted according to the refractive index and thickness of each film layer in the antireflection layer.

In this embodiment, the surface roughness of the substrate body 12 is 0.2-1.4 μm on the side close to the anti-reflection layer 11, which improves the haze of the surface of the substrate body 12 on the side close to the anti-reflection layer 11, improves the light utilization rate and the appearance quality of the conductive glass, further improves the haze, improves the appearance quality of the conductive glass, and has a shielding effect on the photovoltaic module.

In the present embodiment, the surface roughness of the substrate body 12 is less than 0.05 μm on the side far away from the anti-reflective layer 11, and the surface is free of orange peel marks and roller marks, so as to meet the requirements of conductive glass preparation.

In this embodiment, a compact layer is disposed between the substrate body 12 and the conductive layer 13, the substrate body 12 and the conductive layer 13 are tightly bonded by the compact layer, the compact layer is made of silicon dioxide, and the compact layer is a barrier layer to prevent sodium ions in the substrate body from penetrating into the conductive layer.

In the present embodiment, the material of the conductive layer 13 is a metal oxide, and the metal oxide is, but not limited to, ITO or FTO, and Fang Zuxiao of the conductive layer 13 is 15 ohms each side, so that the current transmission loss can be reduced.

In the present embodiment, in order to further increase the light transmittance, the substrate body 12 is preferably ultra-white glass, but not limited thereto, and may be ordinary glass.

Example 2

As shown in fig. 2, in a second embodiment of the present utility model, a photovoltaic module includes a cover plate 1, a battery layer 2, a packaging adhesive film layer 3 and a back plate 4 that are sequentially stacked from top to bottom; the cover plate 1 is made of the conductive glass, and the back surface of the conductive layer 13 of the conductive glass is adhered to and tightly connected with the battery layer 2. The front surface of the conductive glass is disposed toward the light source, that is, the surface of the antireflection layer 11 is toward the light source.

The battery layer 2 in this embodiment includes a hole transport layer, a light absorption layer, an electron transport layer, a back electrode, and an electrical connection layer, wherein the material of the light absorption layer is perovskite material, cadmium telluride material.

Comparative example

A photovoltaic module, comprising: the cover plate 1, the thin film battery layer 2, the packaging adhesive film and the back plate 4 are made of float glass with a conductive layer 13.

The test conditions of the reflective luminance of the comparative example and the present example are: the test is carried out under an indoor light source, and the incident distance of the light source and the distance between the reflective brightness test equipment and the tested photovoltaic module are 1m.

Table 1 performance comparison table

As can be seen from table 1, the reflection brightness of the photovoltaic module of this embodiment is significantly lower than that of the photovoltaic module of the comparative example, and the highest brightness is substantially controlled below 10000cd/m2 under different angle conditions, and in this embodiment, the anti-glare effect is significantly achieved by the technical scheme of the surface structuring and anti-reflection treatment of the conductive glass.

Table 2 table for conductive glass properties

As can be seen from table 2, the transmittance of the conductive glass of this example was improved by 2.3% as compared with that of the conductive glass of the comparative example, the power of the module was improved by 2.0%, and the light utilization was improved.

In summary, according to the conductive glass provided by the utility model, the conductive glass has the light transmittance exceeding 85% by adding the anti-reflection layer and the pattern structure arranged on the surface of the substrate body close to one side of the anti-reflection layer, the arranged pattern structure can effectively reduce the ratio of the brightness of reflected light and the absorption of incident light by a battery observed by human eyes, the light utilization rate is high, the pattern structure has the effects of trapping light and anti-dazzle light, and the optical performance is improved.

With the above-described preferred embodiments according to the present utility model as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present utility model. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of claims.

Claims (10)

1. The conductive glass is characterized by comprising an anti-reflection layer (11), a substrate body (12) and a conductive layer (13) which are sequentially stacked from top to bottom;

wherein a patterned structure (14) is provided on the surface of the substrate body (12) on the side close to the antireflection layer (11).

2. The electrically conductive glass according to claim 1, wherein the patterned structure (14) is in the form of a relief or a relief.

3. The electrically conductive glass according to claim 1, characterized in that the antireflection layer (11) is at least one layer.

4. A conductive glass according to claim 3, wherein the number of the anti-reflection layers (11) is one, the thickness of the anti-reflection layers (11) is 80nm to 150nm, and the refractive index of the anti-reflection layers (11) is 1.20 to 1.35.

5. A conductive glass according to claim 3, wherein the number of the antireflection layers (11) is two, a first film layer and a second film layer provided on the first film layer, respectively, the first film layer being provided on the surface of the substrate body (12) having the pattern structure;

the thickness of the first film layer is 50-90nm; the refractive index of the first film layer is 1.40-1.46;

the thickness of the second film layer is 100-140nm, and the refractive index of the second film layer is 1.22-1.32.

6. The electrically conductive glass according to claim 1, characterized in that the surface roughness of the substrate body (12) on the side close to the antireflection layer (11) is 0.2-1.4 μm.

7. The electrically conductive glass according to claim 1, characterized in that the surface roughness of the substrate body (12) on the side remote from the antireflection layer (11) is less than 0.05 μm.

8. The electrically conductive glass according to claim 1, characterized in that a dense layer is provided between the substrate body (12) and the electrically conductive layer (13).

9. The electrically conductive glass according to claim 1, characterized in that the material of the electrically conductive layer (13) is a metal oxide;

the substrate body (12) is ultra-white glass.

10. The photovoltaic module is characterized by comprising a cover plate (1), a battery layer (2), an encapsulation adhesive film layer (3) and a back plate (4) which are sequentially stacked from top to bottom;

the cover plate (1) is the conductive glass as claimed in any one of claims 1 to 9.