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Light high-strength photovoltaic module and preparation method thereof

A photovoltaic module and high-strength technology, applied in the field of solar cells, can solve the problems of photovoltaic module snow load and wind load test that cannot meet the design specifications, insufficient, thinned module strength, etc., to reduce weight and packaging process requirements, reduce weight, high intensity effect

Active Publication Date: 2020-11-06
JOLYWOOD SUZHOU SUNWATT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to reduce the weight of photovoltaic modules, a feasible technical route is to thin the front glass and use a small metal frame with relatively light weight, but this technical solution brings new problems, that is, the snow load of photovoltaic modules and wind load tests fail to meet design specifications
The reason is mainly due to the insufficient strength of the components brought about by thinning the front glass and using a small metal frame

Method used

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  • Light high-strength photovoltaic module and preparation method thereof
  • Light high-strength photovoltaic module and preparation method thereof

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preparation example Construction

[0086] The present invention also provides a method for preparing a lightweight high-strength photovoltaic module, the method comprising the following steps:

[0087] S1. Preparing a polymer reinforcement layer preform;

[0088] S2, preparing packaging film;

[0089] S3. Lay the front glass, the first encapsulation film, the battery string, the second encapsulation film, the polymer reinforcement layer preform and the photovoltaic backplane in sequence from top to bottom;

[0090] S4. Place the laid overall structure in a preheated laminator, and heat it for 5-30 minutes at a temperature of 130-180°C and a pressure of 10-1000kPa to perform lamination;

[0091] S5, post-processing.

[0092] In one embodiment, in step S1, the preparation of the polymer reinforced layer pre-product includes:

[0093] placing the thermosetting powder at a temperature of 80-130° C., heating for 1-10 minutes, melting, and cooling to form the polymer reinforcement layer pre-product; or,

[0094] ...

Embodiment 1

[0101] The polymer powder material made of thermosetting polyacrylic acid with a diameter of 10-200μm as the main resin, adding curing agent, auxiliary agent and coupling agent, after post-processing, granulation and grinding, is evenly spread on the surface with a unit weight of 300g / m 2 On the glass fiber woven cloth, heat the powder at 80-130°C for 1-10min to melt the powder, and prepare a continuous integrated composite material after cooling, and cut the prepared continuous integrated composite material according to the designed size. obtaining a copolymer reinforced layer preform;

[0102] Prepare ultra-white embossed low-iron coated tempered glass with a thickness of 2.0mm, polyolefin packaging film, battery string, two layers of ethylene-vinyl acetate copolymer film and transparent CPC photovoltaic backplane according to the set size;

[0103] Lay ultra-clear embossed low-iron coated tempered glass, polyolefin film, battery string, ethylene-vinyl acetate copolymer film...

Embodiment 2

[0107] The polymer powder material made of thermosetting polyester with a diameter of 10-200μm as the main resin, adding curing agent, auxiliary agent and coupling agent, after post-processing, granulation and grinding, is evenly spread on the surface with a unit weight of 300g / m 2 On the glass fiber woven cloth, heat the powder at 80-130°C for 1-10min to melt the powder, and prepare a continuous integrated composite material after cooling, and cut the prepared continuous integrated composite material according to the designed size. obtaining a copolymer reinforced layer preform;

[0108] Prepare ultra-white embossed low-iron coated tempered glass with a thickness of 2.0mm, polyolefin packaging film, battery string, two layers of ethylene-vinyl acetate copolymer film and transparent CPC photovoltaic backplane according to the set size;

[0109] Lay ultra-clear embossed low-iron coated tempered glass, polyolefin film, battery string, ethylene-vinyl acetate copolymer film, polym...

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Abstract

The invention relates to a light high-strength photovoltaic module and a preparation method thereof. The light high-strength photovoltaic module sequentially comprises front plate glass, a first packaging adhesive film, a battery string, a second packaging adhesive film, a polymer enhancement layer and a photovoltaic back plate from top to bottom, the front plate glass, the first packaging adhesive film, the battery string, the second packaging adhesive film, the polymer enhancement layer and the photovoltaic back plate are subjected to high-temperature and high-pressure vacuum hot press molding to form the photovoltaic module; and the polymer enhancement layer is used for enhancing the strength of the photovoltaic module. By reducing the thickness of the front plate glass of the photovoltaic module and adding the light high-strength polymer enhancement layer in the photovoltaic module structure, the weight of the photovoltaic module is reduced, and meanwhile, the photovoltaic module has very high strength, so that the certification requirements of wind load, snow load and hail in the IEC standard can be well met.

Description

technical field [0001] The invention relates to the technical field of solar cells, in particular to a light-weight and high-strength photovoltaic module and a preparation method thereof. Background technique [0002] With the increasing awareness of environmental protection and the implementation of many countries' policies on the emission of fossil energy combustion gases, renewable energy represented by solar power has developed rapidly. Especially in recent years, the rapid development of the photovoltaic industry in my country has made solar energy Power generation is becoming more and more well known to the public. At present, solar power generation has entered the era of grid parity. [0003] The basic unit of a common photovoltaic module with crystalline silicon solar cells as the core of power generation includes five parts, from top to bottom, glass front plate, encapsulation film, solar crystalline silicon cell, encapsulation film, and solar cell back film, which a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/048H01L31/049H01L31/18
CPCH01L31/0481H01L31/049H01L31/1876Y02E10/50
Inventor 林建伟张付特赵磊邓如华宋金帅吴韦余艺华
Owner JOLYWOOD SUZHOU SUNWATT
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