CN209963067U - a photovoltaic module - Google Patents

Abstract

The application discloses photovoltaic module, including the chip layer, the chip layer includes electricity generation layer and substrate, photovoltaic module still includes the antireflection layer, the antireflection layer with deviate from in the substrate one side of electricity generation layer is connected. This application deviates from one side on electricity generation layer in the substrate of chip layer and has increased the antireflection layer, can absorb the light that comes from the substrate back, reduces the light reflection, avoids the potential safety hazard that the reflection of light of chip layer caused, improves photovoltaic module's safety in utilization.

Description

a photovoltaic module

technical field

The present application relates to the field of photovoltaic technology, in particular to a photovoltaic module.

Background technique

As a kind of clean energy, solar energy is being exploited and utilized by countries all over the world. How to efficiently collect and utilize solar energy has far-reaching significance for environmental protection. Photovoltaic modules have the advantages of flexibility, thin film, and high power generation efficiency, and can be widely used in daily life, such as photovoltaic billboards set on roads, photovoltaic walls, photovoltaic windows, etc. At present, a photovoltaic module includes a front plate, an adhesive layer and a chip layer that are connected in sequence, wherein the chip layer includes a copper indium gallium selenide thin film power generation layer and a float glass substrate. Since the side of the substrate in the chip layer away from the power generation layer will reflect light in the sun, there is a potential safety hazard.

Utility model content

The purpose of the present application is to provide a photovoltaic module to solve the problem of the existing backside of the chip reflecting light and having potential safety hazards.

In order to achieve the above purpose, the technical solution proposed in the present application is as follows: a photovoltaic assembly, comprising a chip layer, the chip layer including a power generation layer and a substrate, the photovoltaic assembly further comprising an anti-reflection layer, the anti-reflection layer and the A side of the substrate facing away from the power generation layer is connected.

According to the photovoltaic module provided by the present application, an anti-reflection layer is added to the side of the substrate away from the power generation layer, which can absorb light from the back of the substrate, reduce light reflection, avoid potential safety hazards caused by the reflection of the chip layer, and improve photovoltaic performance. Application security for components.

Optionally, the material of the anti-reflection layer includes aluminum-doped zinc oxide.

Optionally, the anti-reflection layer has a nano-array structure.

Optionally, the anti-reflection layer and the substrate are connected through a light-transmitting adhesive layer.

Optionally, the photovoltaic assembly further includes: a back plate connected to a side of the anti-reflection layer facing away from the substrate.

Optionally, the photovoltaic assembly further includes: an impact buffer layer, the impact buffer layer is connected to a side of the anti-reflection layer that is away from the substrate.

Optionally, the material of the impact buffer layer includes polyethylene terephthalate plastic.

Optionally, the impact buffer layer and the anti-reflection layer are connected through a light-transmitting adhesive layer.

Optionally, the material of the adhesive layer includes ethylene-vinyl acetate copolymer or polyvinyl butyral.

Optionally, the power generation layer includes a copper indium gallium selenide thin film.

Advantages of the above additional aspects will be set forth in part, and in part will become apparent from the following description, or learned by practice of the present application.

Description of drawings

FIG. 1 is a schematic structural diagram of a photovoltaic module provided according to an embodiment of the present application;

FIG. 2 is a schematic structural diagram of a photovoltaic module provided according to another embodiment of the present application;

3 is a schematic structural diagram of a photovoltaic module provided according to another embodiment of the present application;

4 is a schematic structural diagram of a photovoltaic module provided according to another embodiment of the present application;

FIG. 5 is a schematic structural diagram of a photovoltaic module provided according to another embodiment of the present application.

In the accompanying drawings, the list of components represented by each number is as follows:

1. Front plate; 2. Chip layer; 201. Power generation layer; 202. Substrate; 3. Anti-reflection layer; 4. Back plate; 5. Impact buffer layer.

Detailed ways

The principles and features of the present application will be described below with reference to the accompanying drawings. The examples are only used to explain the present application, but not to limit the scope of the present application.

With reference to FIG. 1 , some embodiments of the present application provide a photovoltaic module with a power generation layer, which may include a front plate 1 , a chip layer 2 and an anti-reflection layer 3 . The chip layer 2 includes a power generation layer 201 and a substrate 202 . The anti-reflection layer 3 is connected to the side of the substrate 202 away from the power generation layer 201 .

It should be noted that the "connection" described in some embodiments of the present application may be a direct connection or an indirect connection through other structures, and the specific understanding can be determined according to the accompanying drawings.

The front plate 1 in some embodiments of the present application is made of a light-transmitting material, which may be tempered glass or transparent plastic with a certain rigidity.

In some embodiments of the present application, the power generation layer 201 in the chip layer 2 may use a thin film power generation layer commonly used in the art, such as a copper indium gallium selenide thin film. The material of the substrate 202 in the chip layer 2 may be float glass.

In some embodiments of the present application, the front board 1 and the chip layer 2 may be connected by a light-transmitting adhesive layer.

In some embodiments of the present application, the material of the adhesive layer may be ethylene-vinyl acetate copolymer (EVA for short) or polyvinyl butyral (PVB for short), both of which have good connection performance and structural stability .

Based on the above structure, one of the improvements of the photovoltaic module in some embodiments of the present application is: according to the photovoltaic module provided by the present application, an anti-reflection layer is added to the side of the chip layer substrate away from the power generation layer, and the anti-reflection layer can Absorb light from the back of the substrate, reduce light reflection, avoid potential safety hazards caused by the reflection of the chip layer, and improve the application safety of photovoltaic modules.

Considering that the aluminum-doped zinc oxide film has the advantages of high transmittance in the visible light region, high reflectivity in the infrared region, and high ultraviolet absorption rate, in some embodiments of the present application, the material of the anti-reflection layer 3 may include aluminum-doped zinc oxide.

Considering that the nano-array structure has a light trapping effect, in some embodiments of the present application, the anti-reflection layer 3 has a nano-array structure, so that the reflection of incident light on the side of the chip layer substrate away from the power generation layer can be reduced, and the reflection caused by the reflection can be avoided. Security risks.

In some embodiments of the present application, the anti-reflection layer 3 and the substrate 202 may be connected by a light-transmitting adhesive layer. The material of the adhesive layer may be EVA or PVB. In some embodiments of the present application, the aluminum-doped zinc oxide can be formed on a substrate, and the anti-reflection layer 3 including the aluminum-doped zinc oxide and the substrate is bonded to the substrate 202 through an adhesive layer.

In some embodiments of the present application, as shown in FIG. 2 , the photovoltaic module further includes: a back plate 4 , the back plate 4 is connected to a side of the anti-reflection layer 3 facing away from the substrate. By adding a backplane, the stability of the substrate and the antireflection layer can be further enhanced.

In some embodiments of the present application, a light-transmitting adhesive layer may be passed between the back plate and the anti-reflection layer 3 . The material of the adhesive layer may be EVA or PVB.

In some embodiments of the present application, as shown in FIG. 3 , the photovoltaic module further includes: an impact buffer layer 5 , the impact buffer layer 5 is connected to the side of the anti-reflection layer 3 facing away from the substrate 202 . By adding the impact buffer layer 5 on the basis of the anti-reflection layer 3 , the impact strength of the chip layer 2 can be enhanced.

In some embodiments of the present application, the impact buffer layer 5 and the substrate 202 in the chip layer 2 are connected by an adhesive layer. When the photovoltaic module is impacted, the impact buffer layer 5 can absorb part of the impact force and play a role in buffering Therefore, it can improve the impact strength of the photovoltaic module, avoid damage to the substrate of the chip layer 2, and ensure the safety of product use.

Considering that polyethylene terephthalate (PET) has good optical properties and weather resistance, good optical transparency, excellent abrasion resistance, dimensional stability and electrical insulation and other advantages. In some embodiments of the present application, the material of the impact buffer layer 5 includes polyethylene terephthalate plastic.

Of course, the material of the impact buffer layer 5 in some embodiments of the present application is not limited to PET, but can also be a combination material composed of PET and other materials, or other materials known to those skilled in the art with similar properties to PET. This is but described in some embodiments of .

In some embodiments of the present application, as shown in FIGS. 4 and 5 , the photovoltaic module may include a back sheet 4 and an impact buffer layer 5 . As shown in FIG. 4 , the back plate 4 is disposed between the shock buffer layer 5 and the antireflection layer 3 . As shown in FIG. 5 , the shock buffer layer 5 is disposed between the back plate 4 and the anti-reflection layer. The anti-reflection layer 3 , the back plate 4 and the impact buffer layer 5 may be connected by the same or different adhesive layers. The material of the adhesive layer can be EVA, PVB or other light-transmitting adhesive materials.

In some embodiments of the present application, the front sheet, the chip layer, the anti-reflection layer back sheet, and the impact buffer layer may be laminated through a lamination process to make the photovoltaic module more secure.

In some embodiments of the present application, the photovoltaic module may be sealed by a sealant to ensure the stability of the photovoltaic module. Considering that butyl rubber has excellent weathering resistance, heat resistance, acid and alkali resistance, and excellent air tightness and electrical insulation properties, the material of the sealant can include butyl rubber.

In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on those shown in the accompanying drawings The orientation or positional relationship is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the referred device must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as a limitation on the present application.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first" or "second" may expressly or implicitly include one or more of that feature. In the description of the present application, "plurality" means two or more, unless otherwise expressly and specifically defined.

In this application, unless otherwise expressly specified and limited, the terms "installed", "connected", "connected" and other terms should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integrated Wait. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.

Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limitations to the present application. Embodiments are subject to variations, modifications, substitutions and variations.

Claims (10)

1. A photovoltaic module, comprising a chip layer, the chip layer comprising a power generation layer and a substrate, wherein the photovoltaic module further comprises an anti-reflection layer, the anti-reflection layer and the substrate are away from the One side of the power generation layer is connected for absorbing light from the backside of the substrate. 2 . The photovoltaic module according to claim 1 , wherein the material of the anti-reflection layer comprises aluminum-doped zinc oxide. 3 . 3. The photovoltaic module according to claim 1 or 2, wherein the anti-reflection layer has a nano-array structure. 4 . The photovoltaic module according to claim 1 , wherein the anti-reflection layer and the substrate are connected by a light-transmitting adhesive layer. 5 . 5 . The photovoltaic module according to claim 1 , further comprising: a back plate connected to a side of the anti-reflection layer facing away from the substrate. 6 . 6 . The photovoltaic module of claim 1 , further comprising: an impact buffer layer, the impact buffer layer is connected to a side of the anti-reflection layer facing away from the substrate. 7 . 7 . The photovoltaic module according to claim 6 , wherein the material of the impact buffer layer comprises polyethylene terephthalate plastic. 8 . 8 . The photovoltaic module according to claim 6 , wherein the shock buffer layer and the anti-reflection layer are connected by a light-transmitting adhesive layer. 9 . 9 . The photovoltaic module according to claim 4 or 8 , wherein the material of the adhesive layer comprises ethylene-vinyl acetate copolymer or polyvinyl butyral. 10 . 10. The photovoltaic module of claim 1, wherein the power generation layer comprises a copper indium gallium selenide thin film.

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