CN213601880U

CN213601880U - Multilayer photovoltaic module

Info

Publication number: CN213601880U
Application number: CN202023149846.1U
Authority: CN
Inventors: 陈海龙; 丁薇
Original assignee: Jiangsu Runda Pv Wuxi Co ltd
Current assignee: Jiangsu Runda Pv Wuxi Co ltd
Priority date: 2020-12-24
Filing date: 2020-12-24
Publication date: 2021-07-02
Anticipated expiration: 2030-12-24

Abstract

The utility model relates to a multilayer photovoltaic module, including stacking multilayer spare and compound glass layer, stack multilayer spare includes top layer, second floor and third layer from top to bottom, and the Cds battery is the top layer, and the TiO battery is₂The thin film battery is a second layer, the single crystal double-sided battery is a third layer, and the surface layer, the anti-reflection film layer, the second layer, the light filtering film layer and the third layer are paved and then packaged into a stacked multilayer piece; and laying a composite glass layer on the bottom side of the stacked multilayer part, and laminating to obtain the multilayer stacked high-efficiency photovoltaic module. The utility model discloses simple structure selects the different photovoltaic cell of three-layer and just according to each layer photovoltaic cell absorption spectrumThe range capability of the packaging structure is different, the stacking and packaging of the interlayer structure are carried out, the overall conversion efficiency of the assembly is improved, the strength of the assembly is more stable, and the service life is longer.

Description

Multilayer photovoltaic module

Technical Field

The utility model relates to a multilayer photovoltaic module belongs to photovoltaic module preparation technical field.

Background

The main components of the photovoltaic module are solar cells, which can be divided into crystalline silicon cells and thin film cells according to crystalline states, wherein the crystalline silicon cells are divided into monocrystalline silicon and polycrystalline silicon, and the thin film cells are divided into amorphous silicon cells and compound cells. The material can be classified into a silicon thin film, a compound semiconductor thin film and an organic thin film, and the compound semiconductor thin film is classified into amorphous (a-Si: H, a-Si: H: F, a-SixGel-x: H, etc.), IIIV group (GaAs, InP, etc.), IIVI group (CdS series), zinc phosphide (Zn 3p 2), etc. Among them, the crystalline silicon solar cell is the most developed at present and is dominant in application. The single crystal silicon solar cell has the highest conversion efficiency and the most mature technology, and the maximum conversion efficiency of mass production is 24.7 percent, thereby occupying the leading position in large-scale application and industrial production. Compared with monocrystalline silicon, the polycrystalline silicon thin film solar cell has low cost and the maximum conversion efficiency of large-scale production is 22 percent. Thin film solar cells are lightweight, have high conversion efficiency, but are relatively expensive.

The power generation rate of the photovoltaic module is related to the light absorption efficiency of the photovoltaic module, generally called as optical gain, and high optical gain is also one of the research and development hotspots of photovoltaic enterprises, but most of researches can only improve the photovoltaic module around the aspects of sunlight angle, sunlight duration and the like, the improvement on the photovoltaic module is less, and the structure is single.

SUMMERY OF THE UTILITY MODEL

The utility model aims at improving the absorption of subassembly to each wave band energy of sunlight through the adjustment of photovoltaic module structure, improving photovoltaic module's conversion efficiency, providing a multilayer photovoltaic module.

The utility model adopts the following technical scheme that the multilayer photovoltaic component comprises a multilayer part, wherein the multilayer part comprises a surface layer, a second layer and a third layer from top to bottom, a CdS battery is used as the surface layer, and an anti-reflection film layer is laid on the bottom side of the surface layer; TiO is laid on the bottom side of the anti-reflection film layer₂The thin film battery is a second layer, and a light filtering film layer is laid on the bottom side of the TiO2 thin film battery; and a single crystal double-sided battery is laid on the bottom side of the light filtering film layer to form a third layer, the surface layer, the anti-reflection film layer, the second layer, the light filtering film layer and the third layer are sequentially packaged to obtain a stacked multilayer part, and a composite glass layer is laid on the bottom side of the stacked multilayer part for lamination to obtain the multilayer stacked high-efficiency photovoltaic module.

Further, the antireflection film layer includes at least three layers.

Further, the composite glass layer comprises a glass layer, and a layer of silicon dioxide film layer is respectively arranged on the inner side and the outer side of the glass layer.

Further, the light filtering film layer is formed by chemical vapor deposition and the like.

A method of making a multilayer photovoltaic module comprising the steps of:

(1) taking the CdS battery as a surface layer, and laying a plurality of anti-reflection film layers on the bottom side of the surface layer;

(2) laying TiO on the bottom side of the anti-reflection film layer₂The thin film battery is a second layer on the TiO₂Laying a light filtering film layer on the bottom side of the thin film battery;

(3) laying a single crystal double-sided battery as a third layer on the bottom side of the light filtering film layer, packaging the surface layer, the anti-reflection film layer, the second layer, the light filtering film layer and the third layer into a stacked multi-layer piece in sequence, and connecting interlayer circuits in parallel;

(4) laying a composite glass layer below the stacked multilayer part, and putting the laid layers into a laminating machine for lamination;

(5) and mounting a junction box after framing, and testing to obtain a finished photovoltaic module.

The utility model discloses simple structure designs compactly, select the different photovoltaic cell of three-layer and carry out the stack encapsulation of interlaminar structure according to each layer photovoltaic cell absorption spectrum's range ability difference, laying of multilayer antireflection coating, can realize the anti-reflection effect with more wavelengths in wider range, laying of filter coating can the separation not light wave of electricity generation, the compound glass layer of two-sided coating film can play the light wave that absorbs the ground reflection, the holistic conversion efficiency of subassembly has been improved, photovoltaic module's life is longer, the parallel design of circuit between the layers has increased current output, can adapt to multiple different demands.

Drawings

Fig. 1 is a schematic structural diagram of the multi-layer photovoltaic module of the present invention.

Reference numerals: the light-emitting diode comprises a surface layer 1, a second layer 2, a third layer 3, an anti-reflection film layer 4, a light-filtering film layer 5, a composite glass layer 6 and a silicon dioxide film layer 7.

Detailed Description

The present invention will be further described with reference to specific embodiments.

A multilayer photovoltaic module comprises a multilayer stacked piece, wherein the multilayer stacked piece comprises a surface layer 1, a second layer 2 and a third layer 3 from top to bottom, a CdS battery is the surface layer 1, and an antireflection film layer 4 is laid on the bottom side of the surface layer 1; TiO is laid on the bottom side of the anti-reflection film layer 4₂The thin film battery is a second layer 2 on TiO₂A light filtering film layer 5 is laid on the bottom side of the thin film battery; and a single crystal double-sided battery is laid on the bottom side of the light filtering film layer 5 to form a third layer 3, the surface layer 1, the anti-reflection film layer 4, the second layer 2, the light filtering film layer 5 and the third layer 3 are sequentially packaged to obtain a stacked multilayer part, and a composite glass layer 6 is laid on the bottom side of the stacked multilayer part for lamination to obtain the multilayer stacked high-efficiency photovoltaic module.

The CdS battery adopts a thicker glass substrate in an evaporation process during processing, so that the CdS battery can be used as a surface layer, namely a glass bearing layer of the whole photovoltaic module; the spectral response range of the surface layer CdS battery is 370-650 nm; testing the conversion efficiency to 14.7%;

wherein, TiO₂The thin film cell is made by PECVD deposition of a 0.88mm glass substrate, thus acting as a second layer, a second layer of TiO₂The spectral response range of the thin film battery is 200-395 nm; testing the conversion efficiency after superposition to be 11.2%;

the single crystal double-sided battery is packaged by 1mm of glass, and can generate electricity by using the back surface, so that the single crystal double-sided battery serves as a third layer, and the spectral response range of the single crystal double-sided battery at the third layer is 320-1100 nm; testing the conversion efficiency of 15.7% after superposition;

long-wave band solar gloss with a wavelength of more than 600nm can be absorbed by the cell through the filter film and converted into solar energy.

Through the test, adopt the utility model discloses the comprehensive conversion efficiency of the solar PV modules that the preparation obtained reaches 41.6%.

A multilayer photovoltaic module, the method of manufacture comprising the steps of:

(2) laying TiO on the bottom side of the anti-reflection film layer₂Film(s)The second layer of the cell is made of TiO₂Laying a light filtering film layer on the bottom side of the thin film battery;

(3) laying a single crystal double-sided battery as a third layer on the bottom side of the light filtering film layer, packaging the surface layer, the second layer and the third layer into a stacked multi-layer piece in sequence, and connecting circuits among layers in parallel;

Claims

1. A multi-layer photovoltaic module, comprising: the solar cell comprises a stacked multilayer piece, wherein the stacked multilayer piece comprises a surface layer (1), a second layer (2) and a third layer (3) from top to bottom, a CdS cell is the surface layer (1), and an anti-reflection film layer (4) is laid on the bottom side of the surface layer (1); TiO is laid on the bottom side of the anti-reflection film layer (4)₂The thin film battery is a second layer (2) on the TiO₂A light filtering film layer (5) is laid on the bottom side of the thin film battery; the single-crystal double-sided battery is laid on the bottom side of the light filtering film layer (5) to form a third layer (3), the surface layer (1), the anti-reflection film layer (4), the second layer (2), the light filtering film layer (5) and the third layer (3) are sequentially packaged to obtain a stacked multilayer piece, and a composite glass layer is laid on the bottom side of the stacked multilayer piece to be laminated to obtain the multilayer stacked high-efficiency photovoltaic module.

2. A multi-layer photovoltaic module as claimed in claim 1, wherein: the antireflection film layer (4) comprises at least three layers.

3. A multi-layer photovoltaic module as claimed in claim 1, wherein: the composite glass layer comprises a glass layer (6), and a silicon dioxide film layer (7) is respectively arranged on the inner side and the outer side of the glass layer (6).

4. A multi-layer photovoltaic module as claimed in claim 1, wherein: the light filtering film layer (5) is formed by adopting a chemical vapor deposition method.