CN102254976B - Double-sided solar cell component - Google Patents

Double-sided solar cell component Download PDF

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CN102254976B
CN102254976B CN 201110179705 CN201110179705A CN102254976B CN 102254976 B CN102254976 B CN 102254976B CN 201110179705 CN201110179705 CN 201110179705 CN 201110179705 A CN201110179705 A CN 201110179705A CN 102254976 B CN102254976 B CN 102254976B
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solar cell
layer
crystal silicon
conductive film
double
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CN102254976A (en
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刘若鹏
赵治亚
缪锡根
雷通
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Jiangsu Longchang Chemical Co Ltd
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Kuang Chi Institute of Advanced Technology
Kuang Chi Innovative Technology Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy

Abstract

The invention provides a double-sided solar cell component. The double-sided solar cell component comprises a crystalline silicon solar cell component, wherein the crystalline silicon solar cell component comprises cover plate glass, a plurality of crystalline silicon solar cells and a backboard; and the plurality of crystalline silicon solar cells are encapsulated by an ethylene vinyl acetate (EVA) heat melt adhesive, and are fixedly bonded with the cover plate glass and the backboard by the EVA heat melt adhesive respectively. The double-sided solar cell component is characterized in that: the backboard is a thin film solar cell component. The double-sided solar cell component ensures a high energy source utilization rate and has a high economic utilization value.

Description

A kind of solar cell double-side assembly
[technical field]
The present invention relates to area of solar cell, relate to particularly the solar module structure.
[background technology]
The solar cell of at present industrialization mainly contains crystal silicon solar energy battery and thin-film solar cells, and practical application all needs to be packaged into first assembly, and the Main Function of assembly is the protection solar battery sheet, guarantees its service life.The crystal silicon solar battery component structure chart as shown in Figure 1, be disposed with cover-plate glass 1, laminated film 2, solar battery sheet 3, laminated film 2 and backboard 4 along the sunlight incident direction, solar battery sheet 3 encapsulates by laminated film 2, and passes through laminated film 2 with solar battery sheet
Figure GDA00002366885500011
3 bond fixingly with cover-plate glass 1 and backboard 4, form crystal silicon solar battery component.For Thinfilm solar cell assembly, normally in substrate deposition PN junction structure or P-i-N structure as the non-crystal silicon solar cell layer, the cheap glass of the general employing of substrate, the non-crystal silicon solar cell layer is fixed by the laminated film encapsulation and with backboard, and backboard generally adopts EVA or TPT.EVA is ethylene-vinyl acetate (vinyl acetate) ester copolymer as PUR, and it is by ethene (E) and vinyl acetate (VA) copolymerization and make, referred to as EVA.General vinyl acetate (VA) content is 5%~40%.Compare with polyethylene, EVA has been owing to introduced VAM in strand, thereby reduced degree of crystallinity, improved pliability, impact resistance, filler intermiscibility and heat seal performance.
No matter be crystal silicon solar energy battery or thin-film solar cells, usually adopt single face component package mode, and the back side of assembly is not used.
[summary of the invention]
Technical problem to be solved by this invention is: provide a kind of efficient higher solar cell double-side assembly for taking full advantage of solar module back side diffuse light.
The present invention realizes that the technical scheme that goal of the invention adopts is, a kind of solar cell double-side assembly, comprise crystal silicon solar battery component, described crystal silicon solar battery component comprises cover-plate glass, a plurality of crystal silicon solar cell sheets and backboard, described a plurality of crystal silicon solar cell sheet is fixed bonding with cover-plate glass and backboard respectively by the encapsulation of EVA PUR and by the EVA PUR, described backboard is Thinfilm solar cell assembly, described Thinfilm solar cell assembly is comprised of electro-conductive glass and non-crystal silicon solar cell layer, described electro-conductive glass is comprised of glass substrate and conductive film layer, described conductive film layer is between described non-crystal silicon solar cell layer and described glass substrate, described non-crystal silicon solar cell layer is comprised of amorphous silicon membrane layer and aluminum membranous layer, described amorphous silicon membrane layer is between described conductive film layer and described aluminum membranous layer, the fixing bonding of described aluminum membranous layer and described EVA PUR, described aluminum membranous layer is electrically connected with described conductive film layer, and is formed with positive pole and negative pole on the aluminum membranous layer.
Better, described conductive film layer is the tin dioxide transparent conductive film.
Better, described conductive film layer is zinc oxide transparent conductive film.
Better, described conductive film layer is comprised of the conducting film of a plurality of mutual isolation, and described aluminum membranous layer also is comprised of the aluminium film of a plurality of mutual isolation, and described conducting film forms with described aluminium film and is electrically connected.
Better, described amorphous silicon membrane layer is P-i-N type structure.
Better, also comprise a fixed frame, described fixed frame is fixedly connected with the periphery of described cover-plate glass and described electro-conductive glass.
Better, described fixed frame is aluminum alloy frame.
By using according to solar cell double-side assembly of the present invention, replace with thin-film solar cells by the backboard with existing crystal silicon solar energy battery, take full advantage of the diffuse light of cell backside, improve the energy utilization rate of solar cell.
[description of drawings]
Fig. 1, existing crystal silicon solar battery component structure chart.
Fig. 2, embodiment 1 solar cell double-side assembly structure chart.
Fig. 3, the structure chart of embodiment 2 Thinfilm solar cell assemblies.
[embodiment]
The present invention is described in detail below in conjunction with drawings and Examples.
Embodiment 1
Present embodiment provides a kind of solar cell double-side assembly, its structure chart is referring to accompanying drawing 2, comprise cover-plate glass 1, EVA PUR 2, crystal silicon solar cell sheet 3, interconnector 5, electro-conductive glass 6, non-crystal silicon solar cell layer 7, mutually be electrically connected the formation battery layers by interconnector 5 between a plurality of crystal silicon solar cell sheets 3, EVA PUR 2 is with the battery layers enclosed package, non-crystal silicon solar cell layer 7 is arranged between EVA PUR 2 and the electro-conductive glass 6, EVA PUR 2 bonds mutually with cover-plate glass 1 and non-crystal silicon solar cell layer 7 respectively, and electro-conductive glass 6 forms Thinfilm solar cell assembly with non-crystal silicon solar cell layer 7.
The principle of present embodiment work is, battery front side, sunlight is from cover-plate glass 1 incident, arrive crystal silicon solar cell sheet 3 through laminated film 2, crystal silicon solar cell sheet 3 is electric current with light energy conversion, and the electric current of a plurality of crystal silicon solar cell sheets 3 is compiled and is exported by output electrode by interconnector 5; Simultaneously, the light that diffuse reflection produces in the surrounding environment is by the thin-film solar cells incident of cell backside, non-crystal silicon solar cell layer 7 forms Thinfilm solar cell assembly and the light that diffuse reflection produces is converted into electric current take electro-conductive glass 6 as base material, realize diffuse light being converted into electric energy and exporting by output electrode.
Pass through present embodiment, only need to process simply in technique, can improve significantly the efficiency of light energy utilization of solar cell, because the cost of Thinfilm solar cell assembly itself is very low, so the solar cell double-side assembly of present embodiment will have good economic use value.
Embodiment 2
Present embodiment provides a kind of solar cell double-side assembly, its structure chart is referring to accompanying drawing 2, comprise cover-plate glass 1, EVA PUR 2, crystal silicon solar cell sheet 3, interconnector 5, electro-conductive glass 6, non-crystal silicon solar cell layer 7, mutually be electrically connected the formation battery layers by interconnector 5 between a plurality of crystal silicon solar cell sheets 3, EVA PUR 2 is with the battery layers enclosed package, non-crystal silicon solar cell layer 7 is arranged between EVA PUR 2 and the electro-conductive glass 6, EVA PUR 2 bonds mutually with cover-plate glass 1 and non-crystal silicon solar cell layer 7 respectively, and electro-conductive glass 6 forms Thinfilm solar cell assembly with non-crystal silicon solar cell layer 7.The structure chart of Thinfilm solar cell assembly is referring to accompanying drawing 3, comprise the electro-conductive glass 6 that is formed by glass substrate 8 and conductive film layer 9, the non-crystal silicon solar cell layer 7 that is formed by amorphous silicon membrane layer 10 and aluminum membranous layer 11, aluminum membranous layer 11 and EVA PUR 2 fixing bondings, amorphous silicon membrane layer 10 is between aluminum membranous layer 11 and conductive film layer 9, conductive film layer 9 is fixed on the inboard of glass substrate 8, aluminum membranous layer 11 is electrically connected with conductive film layer 9, and be formed with positive pole 12 and negative pole 13 on the aluminum membranous layer 11, positive pole 12 and negative pole 13 form output electrodes.As shown in Figure 3, conductive film layer 9 is comprised of the conducting film of a plurality of mutual isolation in the present embodiment, and aluminum membranous layer 11 also is comprised of the aluminium film of a plurality of mutual isolation, forms between conducting film and the aluminium film to be electrically connected.
The principle of present embodiment work is, battery front side, sunlight is from cover-plate glass 1 incident, arrive crystal silicon solar cell sheet 3 through laminated film 2, crystal silicon solar cell sheet 3 is electric current with light energy conversion, and by interconnector 5 electric current of a plurality of crystal silicon solar cell sheets 3 is pooled to output electrode; Simultaneously, the light that diffuse reflection produces in the surrounding environment is by glass substrate 8 incidents of cell backside, pass through successively conductive film layer 9 and amorphous silicon membrane layer 10, amorphous silicon membrane layer 10 is converted into electric current with light, and by anodal 12 and the output electrode that forms of negative pole 13 externally export.
During implementation, conductive film layer 9 adopts the zinc oxide conducting film, amorphous silicon membrane layer 10 is P-i-N type structure, for fixing better whole solar cell double-side assembly, the aluminium alloy fixed frame also is set, the aluminium alloy fixed frame is fixedly connected with the periphery of cover-plate glass 1 with electro-conductive glass 5, is used for making whole solar cell double-side assembly structure more stable, is convenient to install and adapt to various outdoor environments.
Pass through present embodiment, only need to process simply in technique, can improve significantly the efficiency of light energy utilization of solar cell, because the cost of Thinfilm solar cell assembly itself is very low, so the solar cell double-side assembly of present embodiment will have good economic use value.

Claims (7)

1. solar cell double-side assembly, comprise crystal silicon solar battery component, described crystal silicon solar battery component comprises cover-plate glass, a plurality of crystal silicon solar cell sheets and backboard, described a plurality of crystal silicon solar cell sheet is fixed bonding with cover-plate glass and backboard respectively by the encapsulation of EVA PUR and by the EVA PUR, it is characterized in that: described backboard is Thinfilm solar cell assembly, described Thinfilm solar cell assembly is comprised of electro-conductive glass and non-crystal silicon solar cell layer, described electro-conductive glass is comprised of glass substrate and conductive film layer, described conductive film layer is between described non-crystal silicon solar cell layer and described glass substrate, described non-crystal silicon solar cell layer is comprised of amorphous silicon membrane layer and aluminum membranous layer, described amorphous silicon membrane layer is between described conductive film layer and described aluminum membranous layer, the fixing bonding of described aluminum membranous layer and described EVA PUR, described aluminum membranous layer is electrically connected with described conductive film layer, and is formed with positive pole and negative pole on the aluminum membranous layer.
2. solar cell double-side assembly according to claim 1, it is characterized in that: described conductive film layer is the tin dioxide transparent conductive film.
3. solar cell double-side assembly according to claim 1, it is characterized in that: described conductive film layer is zinc oxide transparent conductive film.
4. solar cell double-side assembly according to claim 1, it is characterized in that: described conductive film layer is comprised of the conducting film of a plurality of mutual isolation, described aluminum membranous layer also is comprised of the aluminium film of a plurality of mutual isolation, and described conducting film forms with described aluminium film and is electrically connected.
5. solar cell double-side assembly according to claim 1, it is characterized in that: described amorphous silicon membrane layer is P-i-N type structure.
6. solar cell double-side assembly according to claim 1, it is characterized in that: also comprise a fixed frame, described fixed frame is fixedly connected with the periphery of described cover-plate glass and described electro-conductive glass.
7. solar cell double-side assembly according to claim 6, it is characterized in that: described fixed frame is aluminum alloy frame.
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Publication number Priority date Publication date Assignee Title
CN105450158A (en) * 2015-12-31 2016-03-30 徐秀萍 Photovoltaic module

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CN103137758A (en) * 2013-03-11 2013-06-05 常州天合光能有限公司 Double-sided solar cell module composited by crystalline silicon solar cell and hull cell
CN105244409A (en) * 2014-06-20 2016-01-13 新日光能源科技股份有限公司 Solar cell module repairing method and solar cell module

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CN101572281B (en) * 2009-06-08 2011-12-14 无锡尚德太阳能电力有限公司 Method for preparing substrate with gallium-doped zinc oxide texture and substrate prepared by the same
CN101951189A (en) * 2010-08-18 2011-01-19 上海达是能源技术有限公司 Large area fluorescent concentrator solar cell system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105450158A (en) * 2015-12-31 2016-03-30 徐秀萍 Photovoltaic module

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Patentee after: Jiangsu Acer Zixin Energy Technology Co.,Ltd.

Address before: 518000, No. 9 software building, central high tech Zone, Nanshan District hi tech Zone, Guangdong, Shenzhen

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Patentee before: Jiangsu Acer Zixin Energy Technology Co.,Ltd.