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Solar cell packaging method

A technology of solar cells and encapsulation methods, which is applied in the field of solar cells, can solve problems such as poor sealing performance and inability to effectively protect solar cells for a long time, and achieve the effects of low cost, long life, and good sealing performance

Inactive Publication Date: 2014-12-10
昆山惟华光能有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the limitation of the physical properties of the glue and the poor sealing performance, the products packaged by this process tend to be short-term and cannot achieve the purpose of effectively protecting solar cells for a long time, so it is mostly used in laboratory device tests

Method used

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Embodiment 1

[0024] Embodiment 1: Encapsulation of a perovskite solar cell device with an area of ​​2cm×2cm

[0025] Specific steps are as follows:

[0026] 1) adding graphene with a diameter of 0.3 to 5 μm and a thickness of 10 to 20 nm in bisphenol A epoxy resin, the mass ratio of graphene to bisphenol A epoxy resin is (1 to 2): 100, and the The mechanical stirring of 2h makes graphene evenly disperse in epoxy resin, obtains graphene modified epoxy resin;

[0027] 2) Join curing agent phthalic anhydride in the graphene-modified epoxy resin, the mass ratio of phthalic anhydride and graphene-modified epoxy resin is 1: (1~2), in the vacuum of 50mbar Mechanically blending 2h under condition, obtain curable graphene-modified epoxy resin composition;

[0028] 3) Epoxy technology: Use a curable graphene-modified epoxy resin composition to cover the light-receiving part of the solar cell, so that it is evenly and tightly wrapped around the solar cell, and the curable graphene-modified epoxy re...

Embodiment 2

[0034] Embodiment 2: Encapsulation of a perovskite solar cell device with an area of ​​10cm×10cm

[0035] 1) Add graphene with a diameter of 0.3~5 μm and a thickness of 0.3~10 nm into bisphenol A epoxy resin, the mass ratio of graphene to bisphenol A epoxy resin is (0.5~1):100, pass The mechanical stirring of 3h makes graphene evenly disperse in epoxy resin, obtains graphene modified epoxy resin;

[0036] 2) curing agent tetrahydrophthalic anhydride (THPA) is added in the graphene-modified epoxy resin, and the mass ratio of tetrahydrophthalic anhydride (THPA) and graphene-modified epoxy resin is 1: (1~2), mechanically blending 3h under the vacuum condition of 30mbar, obtain curable graphene-modified epoxy resin composition;

[0037] 3) Use photovoltaic ultra-clear glass as the upper layer, polyvinyl fluoride composite film (TPT) as the lower layer, and fill the gap between the upper layer and the lower layer with a curable graphene-modified epoxy resin composition to make the...

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Abstract

The invention relates to a solar cell, in particular to a solar cell packaging method which has efficient water-oxygen isolation capacity and can effectively protect the solar cell so as to remarkably prolong service life of the solar cell. The method includes: adding graphene into epoxy resin, and dispersing the graphene in the epoxy resin to obtain graphene modified epoxy resin; adding a curing agent into the graphene modified epoxy resin for blending to obtain a curable graphene modified epoxy resin composite, if the area of a solar cell device is less than or equal to 2.5cm*2.5cm, adopting an adhesive dropping process; if the area of the solar cell device is more than 2.5cm*2.5cm, taking photovoltaic ultra-clear glass as an upper layer and a photovoltaic back plate as a lower layer, filling a gap between the upper layer and the lower layer with the curable graphene modified epoxy resin composite to enable the solar cell to be wrapped; curing the curable graphene modified epoxy resin composite to complete packaging of the solar cell.

Description

technical field [0001] The invention relates to a solar cell, in particular to a packaging method for a solar cell. Background technique [0002] Existing solar cells mainly rely on high-temperature lamination process or vacuum casting process for packaging. [0003] The high-temperature lamination process mainly uses a high-temperature-cured adhesive film (such as EVA) as an adhesive to bond glass or other highly protective materials with solar cell chips. The process of this method is complicated, and requires high temperature and vacuum environment, and the production cost is expensive, so it is generally used for large-scale production. [0004] The glue-dropping process mainly uses glue (epoxy resin glue is often used) to wrap the solar cell in the form of glue-dropping, so as to meet the requirement of being isolated from the outside air environment. However, due to the limitation of the physical properties of the glue and the poor sealing performance, the products p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/18
CPCH01L31/048H01L31/0481Y02E10/50
Inventor 范斌田清勇白华张程范春琳王自信
Owner 昆山惟华光能有限公司
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