CN104332517A - Back contact type solar cell electric conduction backboard - Google Patents

Back contact type solar cell electric conduction backboard Download PDF

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Publication number
CN104332517A
CN104332517A CN201410655173.7A CN201410655173A CN104332517A CN 104332517 A CN104332517 A CN 104332517A CN 201410655173 A CN201410655173 A CN 201410655173A CN 104332517 A CN104332517 A CN 104332517A
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China
Prior art keywords
polyamide
layer
back contact
maleic anhydride
adipamide
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Pending
Application number
CN201410655173.7A
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Chinese (zh)
Inventor
黄伟
赵若飞
蔡书义
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DSM SunShine Solar Technology Suzhou Co Ltd
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Suzhou Sunshine New Materials Technology Co Ltd
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Priority to CN201410655173.7A priority Critical patent/CN104332517A/en
Priority to CN201710732517.3A priority patent/CN107658354A/en
Publication of CN104332517A publication Critical patent/CN104332517A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/042—PV modules or arrays of single PV cells
    • H01L31/048—Encapsulation of modules
    • H01L31/049—Protective back sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B32B15/085—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/10—Interconnection of layers at least one layer having inter-reactive properties
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/042—PV modules or arrays of single PV cells
    • H01L31/048—Encapsulation of modules
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/552—Fatigue strength
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy

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  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Photovoltaic Devices (AREA)

Abstract

The invention discloses a back contact type solar cell electric conduction backboard. The back contact type solar cell electric conduction backboard comprises a weather resistance layer, a bonding layer, a structure strengthening layer, a connection layer and a metal electric conduction layer, which are sequentially arranged, and is characterized in that the weather resistance layer is made of polyamide, the structure strengthening layer is made of polypropylene or polypropylene alloy, and the metal electric conduction layer is made of copper foil. The back contact type solar cell electric conduction backboard has the advantages that 1) a back contact type is adopted, and therefore the illumination area of a photovoltaic module can be increased and electricity generation efficiency is improved; 2) moisture transmittance of a traditional PET (polyethylene terephthalate) backboard is larger than 2g/ (cubic centimeter*day), and compared with the traditional PET backboard, the back contact type solar cell electric conduction backboard is good in water resistance performance due to the fact that moisture transmittance of the back contact type solar cell electric conduction backboard is less than 1g/ (cubic centimeter*day), and therefore the metal electric conduction layer can not be corroded by moisture, and no short circuit or even module scrapping phenomenon can be caused during the use process of the solar module; 3) the polyamide is used to replace a fluorine plastic film of the traditional backboard, and therefore costs are reduced, and simultaneously fluorine pollution can be avoided.

Description

A kind of back contact solar battery conductive backings
Technical field
The present invention relates to a kind of back contact solar battery conductive backings.
Background technology
In the photovoltaic cells, need by the mode of serial or parallel connection, multiple photovoltaic module to be connected together, just have many strip metals grid line on the surface of photovoltaic cell like this.Will grid line be done very thin to reduce surperficial shading, but thin grid line can make again Electrodes increase, and too increases technology difficulty simultaneously.
Grid line and electric contact have been moved on to the back side of battery by back contacts photovoltaic cell, reduce or completely eliminate the shading of positive surface grids, increase light-receiving area, improve the generating efficiency of photovoltaic module; Simultaneously because positive and negative electrode is all positioned at cell backside, can battery packaging technology be simplified, more easily realize automation, and the area ratio shared by back side base stage and emitter can be regulated, reduce the contact resistance of electrode.Moreover, back contacts photovoltaic cell also will be more attractive in appearance.Therefore, the developing direction that back contacts photovoltaic cell will be following photovoltaic art, has wide market prospects.
In numerous types of back-contact battery, conversion ratio is higher and be easy to realize industrialization for metal piercing formula back electrode solar cell (Metallization Wrap Through, MWT).In MWT battery, metal is wound to rear surface via a limited number of aperture by front surface.Like this, solar energy backboard must design support and connection circuit, be connected with two electrodes (base stage and emitter) of battery, form circuit.Back contact solar battery conductive backings, by improving conventional backing plate, be embodied directly in by connecting circuit on solar energy backboard, the encapsulation of such back contact battery will be simpler.
Solar energy backboard mainly comprises weathering layer, structure enhancement layer and reflector three-decker, and the back board structure usually used at present has TPT structure and TPE structure, wherein T refers to the Tedlar film of E.I.Du Pont Company, composition is polyvinyl fluoride (PVF), P refers to PETG (PET) film, E refers to ethylene-vinyl acetate resin (EVA) film, therefore, TPT structure refers to PVF film/PET film/PVF membrane structure, and TPE structure refers to PVF film/PET film/eva film structure, bonding with adhesive between three-layer thin-film.Use in conventional backing plate and use fluorine plastic film as weathering layer, its ageing properties of resistance to long-term outdoor is excellent, but fluorine plastic film itself with high costs, can limit its more massive application.In addition, the ageing-resistant performance of fluorine plastic film excellence is its advantage, is also its shortcoming simultaneously.That is exactly when following solar components is scrapped, these material requires recycle, and corrosion-resistant, ageing-resistant performance that fluorine plastic film itself is excellent, prevent environment to the ability of its degradation treatment, and, form because solar energy backboard mostly is MULTILAYER COMPOSITE, because its layers of material is different, reclaim reprocessing difficulty.In future, fluoroplastics pollute more difficult than present white pollution.In addition, the PET film plastics of the structure enhancement layer use of conventional backing plate, its wet-heat resisting hydrolysis property is poor, brittlely can ftracture, cause deterioration or the inefficacy of solar cell properties in long-term hygrothermal environment uses.Conventional P ET backboard water vapor transmittance >2 gram/cc of sky, like this in solar components use procedure, its metal conducting layer of back-contact conductive backings is easy to be subject to vapour corrosion, cause short circuit even assembly scrap.Therefore, research and develop the back-contact conductive backings that a kind of cost is low, resistance to ag(e)ing is excellent, water vapor rejection performance is good, the generating efficiency of photovoltaic module can not only be increased, more can improve photovoltaic module useful life, the development of photovoltaic industry is now had great significance.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of back contact solar battery conductive backings.
The present invention is achieved through the following technical solutions:
A kind of back contact solar battery conductive backings, comprise the weathering layer, adhesive layer, structure enhancement layer, articulamentum, the metal conducting layer that set gradually, described weathering layer is that polyamide is made, and described structure enhancement layer is polypropylene or polypropylene alloy, and described metal conducting layer is Copper Foil.Add metal conducting layer, adopt back-contact, the illuminating area of photovoltaic module can be increased, improve generating efficiency.Adopt polypropylene alloy layer to make structure enhancement layer, replace the PET polyester of conventional backing plate, its hydrolysis, ageing-resistant performance are more excellent.Adopt polyamide to make weathering layer, replace the fluorine plastic film of conventional backing plate, possess excellent ageing-resistant performance, cost reduces, and can avoid fluoride pollution simultaneously.The water vapor transmittance <1 gram/cc sky of this patent backboard, is better than 2 grams/cc of skies of conventional backing plate, can protect metal conducting layer in the use of photovoltaic module not by moisture attacks, extend the useful life of photovoltaic module.
Further, described polyamide is one or more the combination be selected from following component: polyamide 6, polyamide 66, polyamide 46, polyamide 410, polyamide 610, polyamide 612, polyamide 6 14, polyamide 6 13, polyamide 6 15, polyamide 6 16, polyamide 11, polyamide 12, polyamide 10, polyamide 912, polyamide 913, polyamide 914, polyamide 915, polyamide 6 16, polyamide 1010, polyamide 1012, polyamide 1013, polyamide 1014, polyamide 1210, polyamide 1212, polyamide 1213, polyamide 1214, poly terephthalic acid adipamide, poly terephthalic acid nonanedioyl amine, poly terephthalic acid decanediamide, poly terephthalic acid 12 diamides, adipic acid adipamide/terephthalic acid (TPA) adipamide copolyamide, terephthalic acid (TPA) adipamide/M-phthalic acid adipamide copolyamide, poly-adipic acid meta-xylene acid amides, terephthalic acid (TPA) adipamide/terephthalic acid (TPA) 2-methyl glutaryl amine, adipic acid adipamide/terephthalic acid (TPA) adipamide/M-phthalic acid adipamide copolyamide, polycaprolactam-terephthalic acid (TPA) adipamide, described polypropylene alloy is the alloy of polypropylene or modified polypropene and engineering plastics, described engineering plastics are polyamide or polyphenylene oxide, described polypropylene is selected from one or more in HOPP, COPP and block copolymerization polypropylene.
Further, described articulamentum is ethene, esters of acrylic acid, the binary of glycidyl methacrylate three or terpolymer, or the polymer of the olefines of maleic anhydride graft.
As a kind of optimal way, between described structure enhancement layer and articulamentum, add adhesive layer.
Further, described adhesive layer is the polymer of the olefines of maleic anhydride graft, the polymer of the olefines of described maleic anhydride graft is one or more combination following: the ethylene-methyl acrylate copolymer of the copolymer of maleic anhydride grafted polyethylene, maleic anhydride and ethene, the ethylene-vinyl acetate copolymer of maleic anhydride graft, maleic anhydride graft, the ethylene-ethyl acrylate copolymer of maleic anhydride graft, the ethylene-butyl acrylate copolymer of maleic anhydride graft, the polypropylene of maleic anhydride graft.
Further, described adhesive layer and articulamentum respectively with POE elastomer blended modifier; Described POE elastomer is ethene, propylene, butylene, hexene, the binary of octene or multiple copolymer.
Further, described weathering layer, adhesive layer, structure enhancement layer and articulamentum all add heat stabilizer, antioxidant and inorganic filler, and described inorganic filler is selected from the one in calcium carbonate, titanium dioxide, barium sulfate, mica, talcum, kaolin, glass microballoon and glass fibre.
Further, described metal conducting layer needs by cutting or grind formation circuit.
Further, the thickness of described weathering layer is at 10-100 micron, and the thickness of described adhesive layer is at 10-100 micron, and the thickness of described structure enhancement layer is at 100-500 micron, the thickness of described articulamentum is at 10-100 micron, and the thickness of described metal conducting layer is at 10-100 micron.
As a kind of preferred version, the thickness of described weathering layer is at 20-50 micron, and the thickness of described adhesive layer is at 20-50 micron, and the thickness of described structure enhancement layer is 100-300 micron, the thickness of described articulamentum is at 20-50 micron, and the thickness of described metal conducting layer is at 20-50 micron.
Further, be expressed in same mould by described weathering layer, adhesive layer, structure enhancement layer, articulamentum plastic pellet respectively by extruder, metal level is compound on articulamentum while extruding, one-step shaping.
Compared with prior art, the invention has the beneficial effects as follows:
1. this patent additional metal conductive layer on solar energy backboard, and by cutting or grind formation circuit, adopt back-contact, the illuminating area of photovoltaic module can be increased, improve generating efficiency.
2. this patent structure enhancement layer is polypropylene alloy layer, and replace the PET polyester of conventional backing plate, its hydrolysis, ageing-resistant performance are more excellent.Conventional P ET backboard water vapor transmittance >2 gram/cc of sky, the block-water performance of this patent backboard is more excellent, water vapor transmittance <1 gram/cc sky, like this in solar components use procedure, metal conducting layer can not by vapour corrosion, cause short circuit even assembly scrap.
3. adopt polyamide to replace the fluorine plastic film of conventional backing plate, cost reduces, and can avoid fluoride pollution simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment 1.
Fig. 2 is the structural representation of embodiment 2.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described:
Embodiment 1
As shown in Figure 1, back contact solar battery conductive backings, by the weathering layer 1 of compound successively, adhesive layer 2, structure enhancement layer 3, articulamentum 4, metal conducting layer 5 forms.
Weathering layer 1 is made up of polyamide (PA), stabilizer, antioxidant and inorganic material, is specially 100 weight portion PA12,0.3 weight portion Irganox 245 and 3 weight portion TiO 2blended, through extruder granulation.Wherein, the heat stabilizer produced for BASF joint-stock company of Irganox 245.
Adhesive layer 2 is 80 parts by weight maleic anhydride grafted polyethylenes, 20 parts by weight of ethylene-methyl acrylate copolymer, 0.3 weight portion Irganox B225 is blended forms.Wherein, Irganox B225 is the heat stabilizer that BASF joint-stock company produces.
Structure enhancement layer 3 is made up of modified polypropene.Modified polypropene is then formed by HOPP (homopolymerization PP) and heat stabilizer blending and modifying, is specially 100 parts of homopolymerization PP, 10 parts of polyphenylene oxide PPO and 0.3 part of Irganox B225 are blended, through extruder granulation.
Articulamentum 4 is 80 parts of maleic anhydride grafted polyethylenes, 20 parts of ethylene-methyl acrylate copolymers, 0.3 part of Irganox B225 are blended forms.
Above four layer materials are by multilayer extrusion machine melting co-extrusion, and composition metal conductive layer on articulamentum 4 simultaneously, thickness is the Copper Foil of 25 microns, and forms circuit by cutting.Five layer thicknesses are respectively 30/20/250/50/25 micron, the back contact solar battery conductive backings gross thickness 375 microns made thus.The interlaminar strength of Copper Foil is the interlaminar strength of the Copper Foil after 11.6N/cm, Damp-Heat 1000 hours aging (85 DEG C, 85% humidity) is 9.8N/cm.Wherein, peel strength test (180 degree, 0.2m/min peeling rate) normative reference is ASTM D1876, Damp-Heat hydrothermal aging (85 DEG C, 85% humidity, 1000h) normative reference is IEC61215.
Embodiment 2
As shown in Figure 2, a kind of back contact solar battery conductive backings, by the weathering layer 1 of compound successively, adhesive layer 2, structure enhancement layer 3, adhesive layer 6, articulamentum 4, metal conducting layer 5 forms.
Weathering layer 1 is made up of polyamide (PA), stabilizer, antioxidant and inorganic material, is specially 100 parts of PA12,0.3 part of Irganox-245 and 3 part TiO 2blended, through extruder granulation.
Adhesive layer 2, adhesive layer 6 are 100 parts of maleic anhydride inoculated polypropylenes, 0.3 part of Irganox B225 is blended forms.
Structure enhancement layer 3 is made up of modified polypropene.Modified polypropene is then formed by HOPP (homopolymerization PP) and heat stabilizer blending and modifying, is specially 100 parts of homopolymerization PP, 10 parts of polyphenylene oxide PPO and 0.3 part of Irganox B225 are blended, through extruder granulation.
Articulamentum 4 is 40 parts of ethylene copolymers containing epoxide group pTW, 60 parts of LLDPE, 0.3 part of Irganox B225 is blended forms, wherein pTW is that Dupont Chemical Group (China) Co., Ltd produces.
Above five layer materials are by multilayer extrusion machine melting co-extrusion, and composition metal conductive layer on articulamentum 4 simultaneously, thickness is the Copper Foil of 25 microns, and forms circuit by cutting.Six layer thicknesses are respectively 30/20/250/20/50/25 micron, the back contact solar battery conductive backings gross thickness 395 microns made thus.The interlaminar strength of Copper Foil is the interlaminar strength of the Copper Foil after 13.2N/cm, Damp-Heat 1000 hours aging (85 DEG C, 85% humidity) is 11.4N/cm.
All simple distortion of making when not departing from core of the present invention or amendment all fall into protection scope of the present invention.

Claims (10)

1. a back contact solar battery conductive backings, comprise the weathering layer, adhesive layer, structure enhancement layer, articulamentum, the metal conducting layer that set gradually, it is characterized in that, described weathering layer is that polyamide is made, described structure enhancement layer is polypropylene or polypropylene alloy, and described metal conducting layer is Copper Foil.
2. a kind of back contact solar battery conductive backings according to claim 1, is characterized in that, described polyamide is one or more the combination be selected from following component: polyamide 6, polyamide 66, polyamide 46, polyamide 410, polyamide 610, polyamide 612, polyamide 6 14, polyamide 6 13, polyamide 6 15, polyamide 6 16, polyamide 11, polyamide 12, polyamide 10, polyamide 912, polyamide 913, polyamide 914, polyamide 915, polyamide 6 16, polyamide 1010, polyamide 1012, polyamide 1013, polyamide 1014, polyamide 1210, polyamide 1212, polyamide 1213, polyamide 1214, poly terephthalic acid adipamide, poly terephthalic acid nonanedioyl amine, poly terephthalic acid decanediamide, poly terephthalic acid 12 diamides, adipic acid adipamide/terephthalic acid (TPA) adipamide copolyamide, terephthalic acid (TPA) adipamide/M-phthalic acid adipamide copolyamide, poly-adipic acid meta-xylene acid amides, terephthalic acid (TPA) adipamide/terephthalic acid (TPA) 2-methyl glutaryl amine, adipic acid adipamide/terephthalic acid (TPA) adipamide/M-phthalic acid adipamide copolyamide, polycaprolactam-terephthalic acid (TPA) adipamide, described polypropylene alloy is the alloy of polypropylene or modified polypropene and engineering plastics, described engineering plastics are polyamide or polyphenylene oxide, described polypropylene is selected from one or more in HOPP, COPP and block copolymerization polypropylene.
3. a kind of back contact solar battery conductive backings according to claim 1, it is characterized in that, described articulamentum is ethene, esters of acrylic acid, the binary of glycidyl methacrylate three or terpolymer, or the polymer of the olefines of maleic anhydride graft.
4. a kind of back contact solar battery conductive backings according to claim 3, is characterized in that, adds adhesive layer between described structure enhancement layer and articulamentum.
5. a kind of back contact solar battery conductive backings according to any one of claim 1-4, it is characterized in that, described adhesive layer is the polymer of the olefines of maleic anhydride graft, the polymer of the olefines of described maleic anhydride graft is one or more combination following: maleic anhydride grafted polyethylene, the copolymer of maleic anhydride and ethene, the ethylene-vinyl acetate copolymer of maleic anhydride graft, the ethylene-methyl acrylate copolymer of maleic anhydride graft, the ethylene-ethyl acrylate copolymer of maleic anhydride graft, the ethylene-butyl acrylate copolymer of maleic anhydride graft, maleic anhydride inoculated polypropylene.
6. a kind of back contact solar battery conductive backings according to claim 5, is characterized in that, described adhesive layer and articulamentum respectively with POE elastomer blended modifier; Described POE elastomer is ethene, propylene, butylene, hexene, the binary of octene or multiple copolymer.
7. a kind of back contact solar battery conductive backings according to claim 5, it is characterized in that, described weathering layer, adhesive layer, structure enhancement layer and articulamentum all add heat stabilizer, antioxidant and inorganic filler, and described inorganic filler is selected from the one in calcium carbonate, titanium dioxide, barium sulfate, mica, talcum, kaolin, glass microballoon and glass fibre.
8. a kind of back contact solar battery conductive backings according to any one of claim 1-4, is characterized in that, described metal conducting layer needs by cutting or grind formation circuit.
9. a kind of back contact solar battery conductive backings according to any one of claim 1-4, it is characterized in that, the thickness of described weathering layer is at 10-100 micron, the thickness of described adhesive layer is at 10-100 micron, the thickness of described structure enhancement layer is at 100-500 micron, the thickness of described articulamentum is at 10-100 micron, and the thickness of described metal conducting layer is at 10-100 micron.
10. a kind of back contact solar battery conductive backings according to any one of claim 1-4, it is characterized in that, described weathering layer, adhesive layer, structure enhancement layer, articulamentum plastic pellet are expressed in same mould respectively by extruder, metal level is compound on articulamentum while extruding, one-step shaping.
CN201410655173.7A 2014-11-17 2014-11-17 Back contact type solar cell electric conduction backboard Pending CN104332517A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017049798A1 (en) * 2015-09-23 2017-03-30 苏州腾晖光伏技术有限公司 Pid-resistant and wind sand resistant crystalline silicon solar cell assembly
CN115725247A (en) * 2022-11-03 2023-03-03 江苏东鋆光伏科技有限公司 Conductive backboard for photovoltaic module and preparation method thereof

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019205494A1 (en) * 2018-04-27 2019-10-31 北京铂阳顶荣光伏科技有限公司 Conductive electrode membrane layer and photovoltaic element

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