Acid corrosion resistance thin-film solar battery component

A solar cell, acid corrosion-resistant technology, applied in electrical components, circuits, photovoltaic power generation, etc., can solve the problems of lack, insufficient anti-ultraviolet aging ability of epoxy resin, unable to meet long-term use, etc., and achieve the effect of high safety, reliability and performance.

Inactive Publication Date: 2013-04-10
河北京碳能源有限公司
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

However, this encapsulation method is only used for the encapsulation and protection of small cells, and the anti-ultraviolet aging ability of epoxy resin itself is insufficient, which cannot meet the requirements of long-term outdoor use of large-area thin-film solar cell modules.
[0005] Therefore, in the field of thin-film solar cell module packaging technology, there is still a lack of a packaging technology suitable for mass production of thin-film solar cells that effectively prevents acid from corroding thin-film solar cell modules.

Method used

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  • Acid corrosion resistance thin-film solar battery component

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Experimental program
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Effect test

Embodiment 1

[0019] See attached figure 1 The thin-film solar cell is provided with a front plate 1, a battery layer 2, an acid-resistant corrosion layer 3, a transparent PVB film (ie, an encapsulation film 4) and a back plate 5 sequentially from the direction of sunlight incidence. On the battery layer 2, a layer of acid-resistant corrosion layer 3 is evenly printed by screen printing method. The thickness of the acid-resistant corrosion layer 3 after curing is 25 microns, and the material is phenolic resin. The packaging film 4 and the back plate are covered on the acid-resistant layer 3. 5. Encapsulate the batteries together by lamination process.

[0020] After the completion of the production, compared with the solar cell modules without the acid-resistant corrosion layer, it was found that the solar cell modules with the acid-resistant corrosion layer passed the 1000h damp heat accelerated aging test, and the bus bar of the battery was observed to be free from looseness and corrosion...

Embodiment 2

[0022] The acid corrosion resistant material phenolic resin of the acid corrosion resistant layer 3 in embodiment 1 is replaced with white or nearly white acid resistant ash or porcelain powder, quartz powder, kaolin, and its parts by weight are in the range of 10-50 parts, and the film-forming material is selected ring Oxygen resin, the parts by weight are 50-90 parts, the thickness of the acid corrosion-resistant layer is in the range of 10-500 microns, and the solar cell modules made according to the same method are subjected to 200 thermal cycle aging tests, and the power decay ratio is higher than that of the acid-resistant corrosion-resistant Layer components are 1.5% lower.

Embodiment 3

[0024] Mix acid-resistant ash and film-forming material silicone resin according to the ratio of 25 and 75 parts by weight respectively, and obtain an acid-resistant film with a thickness of 200 microns through a film-making process, and apply this acid-resistant film to copper indium selenium thin film solar cells In the encapsulation structure of the solar cell module, after 1000h of damp heat aging test, the power decline is 1.5% lower than that of the module without the acid corrosion-resistant film.

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Abstract

The invention discloses an acid corrosion resistance thin-film solar battery component which comprises a front panel, a battery layer, an encapsulation film and a back panel, wherein the front panel, the battery layer, the encapsulation film and the back panel are arranged in sequence along the incidence direction of sunlight, and at least one acid corrosion resistance layer is arranged between a back side of the battery layer and the encapsulation film. The at least one acid corrosion resistance is made of colorless, white and/or close-to-white acid corrosion resistance materials which are good in acid resistance and insulation. According to the acid corrosion resistance thin-film solar battery component, the acid corrosion resistance layer is manufactured between the back side of the battery layer and the encapsulation film, can prevent acidic material produced by aging of the encapsulation film from being directly contacted with the battery layer, and protects a battery from corrosion. In addition, the acid corrosion resistance layer is a good insulation protective layer and a first protective layer to protect the battery from corrosion of the outer side, the battery is protected by two layers including the acid corrosion resistance layer and the encapsulation film, and safe and reliable performance is high.

Description

[0001] technical field [0002] The invention relates to an acid corrosion-resistant thin-film solar battery assembly packaging structure, which belongs to the field of solar photovoltaic devices. Background technique [0003] Thin-film solar cell packaging is an important process link to block the erosion of the harsh conditions of the natural environment and ensure the battery has a service life of 25 years. The quality of the packaging determines the reliability of the battery for long-term use. The packaging of thin-film solar cell modules is to bond the front sheet, battery layer and back sheet together through a polymer film. After encapsulation, one side electrode and metal bus bar of the thin-film battery assembly are closely bonded to the encapsulation film. The polymer film is generally made of EVA (polyethylene-ethyl vinyl acetate) or PVB (polyvinyl butyral). During long-term use, polymer films such as EVA or PVB are susceptible to ultraviolet radiation, high t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/048H01L31/049
CPCY02E10/50
Inventor 王晓丽黄跃龙倪健雄王亚丽刘星马云祥
Owner 河北京碳能源有限公司
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