CN103441170A - Solar energy backboard, packaging structure and solar energy cell assembly - Google Patents
Solar energy backboard, packaging structure and solar energy cell assembly Download PDFInfo
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- CN103441170A CN103441170A CN2013104030251A CN201310403025A CN103441170A CN 103441170 A CN103441170 A CN 103441170A CN 2013104030251 A CN2013104030251 A CN 2013104030251A CN 201310403025 A CN201310403025 A CN 201310403025A CN 103441170 A CN103441170 A CN 103441170A
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Images
Classifications
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- 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
Landscapes
- Laminated Bodies (AREA)
Abstract
The invention discloses a solar energy backboard, a packaging structure and a solar energy cell assembly. The solar energy backboard comprises an adhesive layer, a main body layer and an ultraviolet resistant layer. The main body layer is arranged between the adhesive layer and the ultraviolet resistant layer. The adhesive layer is a sea lake island cladding structure comprising multiple island units which are formed by main body material phases of the main body layer, multiple lake units which are formed by bulking agent material phases, and a sea unit which is formed by an adhesive material phase. The lake units are clad with the sea unit, and the island units are clad with the lake units. Excellent adhesive performance is ensured between the solar energy backboard and filling resin so that the solar energy backboard, the packaging structure and the solar energy cell assembly are particularly applicable to the solar energy backboard whose adhesive performance with filling resin is poor.
Description
Technical field
The invention belongs to photovoltaic and manufacture field, be specifically related to a kind of solar energy backboard, encapsulating structure and solar module, especially be applicable to being applied to the solar energy backboard poor with the potting resin adhesion property.
Background technology
Along with the development of modern industry, global energy crisis and atmosphere polluting problem become increasingly conspicuous, so people replace traditional energy gradually in the urgent need to finding regenerative resource.And solar energy is as the regenerative resource of core, therefore in recent years, the photovoltaic field more and more comes into one's own, and has obtained and develop rapidly.Wherein, solar module directly changes into the core texture of electric energy as the energy by sunlight; its process structure mainly comprises: at first a plurality of solar battery sheets are carried out to the series and parallel connection, the solar battery sheet that then will complete the series and parallel connection carries out packaging protection.Encapsulating structure mainly comprises: transparency carrier; the general glass that adopts is made; for covering the sensitive surface of solar battery sheet; the employing backboard is protected, the back side of support solar cell piece, adopts potting resin (being generally the EVA plastics) that the gap between transparency carrier, backboard and solar battery sheet is filled simultaneously.Because the solar energy backboard needs long term exposure in outdoor environment, (business is 25 years with the instructions for use of solar module at present), therefore its should possess high mechanical properties, good dimensional stability, anti-flammability, high-insulation and with the basic function of the high tack of potting resin outside, also should there is very excellent, permanent comprising as the weather resistance of heat-resisting, hydrolysis and anti-ultraviolet etc., could meet the test in useful life that solar module reaches 25 years.
In prior art, solar energy backboard commonly used mainly comprises three kinds: TPT type solar energy backboard, TPE type solar energy backboard and PPP type solar energy backboard.Wherein, after TPT type solar energy backboard is the biaxial tension PET film double spread adhesive for polyurethane by one deck 250 μ m; PVF film at the compound 30 μ m of the two sides of PET film difference; the PVF film has superior outdoor environment weatherability (can reach more than 40 years); effectively protected the PET as the backboard main material, but the material cost of PVF is high.Wherein, after TPE type solar energy backboard is the biaxial tension PET film double spread adhesive for polyurethane by one deck 250 μ m, PVF film at the compound 30 μ m of the lower surface of PET film, and PE or the eva film of surface recombination 50 μ m thereon, TPE type solar energy backboard has weatherability preferably, and, with respect to TPT type solar energy backboard, its cost of manufacture is lower, be also to use more type in existing market; Wherein, after PPP solar energy backboard is the biaxial tension PET film double spread adhesive for polyurethane by one deck 250 μ m, hydrolysis PET film at the compound 50 μ m of the lower surface of PET film, and the PE film of surface recombination 50 μ m thereon, PPP type solar energy backboard cost is minimum, but its weatherability is not so good as TPT type solar energy backboard and TPE type solar energy backboard, so in existing market, makes land used less.
From above, find out, the material of main part that the solar energy backboard adopts at present is PET, in order to guarantee that the solar energy backboard possesses high mechanical properties, good dimensional stability, anti-flammability and high-insulation, yet owing to containing a large amount of ester groups in the PET molecular backbone, with glassware for drinking water, good compatibility is arranged, easily produce water plasticising, even the moisture of trace also can cause the degraded of PET molecular backbone, thereby cause the mechanical performance of PET to be damaged, temperature can make above-mentioned degradation process obviously accelerate while raising, therefore water and heat are the main causes that causes the PET mechanical strength sharply to descend.In addition, ultra-violet radiation also can make the molecular weight of PET, strength and elongation significantly descend, and degree of crystallinity increases, thereby the mechanical performance of PET material is damaged.And because the protective layer thickness that is positioned at the pet layer lower surface in the solar energy backboard generally only has 30 μ m; in long outdoor overall situation is used; aqueous vapor and oxygen still can penetrate into the pet layer in the middle of being positioned at by the lower surface protective layer; cause pet layer degraded, deteriorated; final and potting resin breaks away from; its protection to solar battery sheet and support function were lost efficacy, and then cause the generating efficiency of solar module to reduce and even the solar module global failure.
Therefore be necessary existing solar energy backboard is proposed to improve, guarantee it possess high mechanical properties, good dimensional stability, anti-flammability, high-insulation and with the prerequisite of the high tack of potting resin under, also possess excellence, the permanent weather resistance comprised as heat-resisting, hydrolysis and anti-ultraviolet etc. simultaneously.
Current prior art, the Chinese invention patent that is CN102414838A as publication number discloses and has adopted the PPE material to replace the material of main part of the PET material of prior art as the solar energy backboard, the technical problem that although this patented technology has avoided existing conventional solar energy backboard to exist is heat-resisting, anti-hydrolytic performance is poor, but the PET material is except existing the poor technical problem of ultra-violet resistance energy, also have the poor technical problem of itself and potting resin tack, this makes the PPE material be subject to larger restriction as the material of main part of solar energy backboard.
Therefore comprehensive above content, still solve above technical problem in the urgent need to seeking the optimisation technique scheme.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of solar energy backboard, encapsulating structure and solar module, effectively guarantee between solar energy backboard and potting resin to possess excellent adhesion property, so the present invention especially is applicable to being applied to the solar energy backboard poor with the potting resin adhesion property.
To achieve these goals, technical scheme provided by the invention is as follows:
A kind of solar energy backboard, described solar energy backboard comprises adhesion layer, body layer and the layer of anti-the ultraviolet, described body layer is between described adhesion layer and the described layer of anti-the ultraviolet, described adhesion layer Wei Haihu island clad structure, described Hai Hu island clad structure comprises some unit, island that formed mutually by the material of main part of body layer, some unit, lake formed mutually by the bulking agent material and the extra large unit formed mutually by attachment material, wherein, described extra large unit coats unit, described lake, and unit, described lake coats unit, described island.
Preferably, the described layer of anti-the ultraviolet/and described adhesion layer in contain some microballons, the particle size range of described microballon is 0.5-10 μ m.
Preferably, the thickness of described adhesion layer is 0.01-0.1mm, and the thickness of described body layer is 0.1-0.3mm, and the outer field thickness of described anti-purple is 0.01-0.075mm.
Preferably, described solar energy backboard is the coextrusion mold structure.
Preferably, the material of main part of described body layer is the PPE resin; Described body layer specifically comprises:
The PPE resin of 40-95wt%;
The ASA resin of 5-40wt%.
Preferably, the described layer of anti-the ultraviolet comprises the resin of anti-ultraviolet of 40-90wt% and the uvioresistant additive of 5-40wt%, the described resin of anti-the ultraviolet is selected from any one in fluorine resin, PA resin and PET resin, and described uvioresistant additive is selected from any one or a few the mixing in ASA resin, Chinese white, black pigment and microballon.
Preferably, a kind of encapsulating structure of solar module, comprise glass, potting resin and solar energy backboard, wherein, described solar energy backboard adopts solar energy backboard as above, and the body layer of described solar energy backboard is attached on described potting resin by described adhesion layer.
Preferably, described adhesion layer comprises the polyolefin resin of 20-70wt%, the PPE resin of 20-50wt%, the bulking agent of 10-40wt%.
Preferably, described adhesion layer further comprises the uvioresistant additive of 5-30wt% and/or the anti-deformation additive of 5-30wt%, described uvioresistant additive is selected from any one or a few the mixing in ASA resin, Chinese white, black pigment and microballon, and described anti-deformation additive is the rubber resin with nucleocapsid structure.
Preferably, a kind of solar module, comprise some solar battery sheets that mutual series and parallel connects, and, for encapsulating the encapsulating structure of described solar battery sheet, wherein, described encapsulating structure adopts encapsulating structure as above.
The present invention proposes the solar energy backboard and is set to comprise adhesion layer, body layer and the outer field three-decker of anti-purple, body layer is between adhesion layer and the layer of anti-the ultraviolet, adhesion layer Wei Haihu island clad structure, Hai Hu island clad structure comprises some unit, island that formed mutually by the material of main part of body layer, some unit, lake that formed mutually by the bulking agent material and the extra large unit formed mutually by attachment material, wherein, unit, coating lake, unit, sea, unit, coating island, unit, lake, because the extra large unit formed mutually by attachment material in adhesion layer and potting resin have very good tack, the unit, island formed mutually by the material of main part of body layer in adhesion layer has very good tack with body layer again, between the unit, island that the unit, lake simultaneously formed mutually by the bulking agent material in adhesion layer makes again the extra large unit that formed mutually by attachment material and material of main part by body layer form mutually, carry out very well compatible, final solar energy backboard and potting resin are realized very good adhering to, effectively guarantee between solar energy backboard and potting resin to possess excellent adhesion property.
The present invention further optimally, due to the PPE resin except possessing high mechanical properties, good dimensional stability, outside anti-flammability and high-insulation, also possess the heat-resisting of excellence, anti-hydrolytic performance, but during as the solar energy back veneer material except having the poor defect of mutual capacitive between itself and potting resin (being generally the EVA resin), also there is the poor technical problem of ultra-violet resistance, the present invention also further proposes to adopt the core constituent of the blend of PPE resin and ASA resin as body layer in the solar energy backboard, this is because the applicant finds through lot of experiments with after analyzing, the ASA resin has extremely superior uvioresistant performance, after it and PPE resin carry out blend, can increase substantially the ultraviolet aging resistance performance of PPE in solar energy back plate main body layer, there is the poor technical barrier of ultra-violet resistance thereby overcome smoothly when the PPE material is applied in the solar energy backboard, effectively promote the application of PPE material in the solar energy backboard.
The accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, below will the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described, apparently, the accompanying drawing the following describes is only some embodiment that put down in writing in the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the cross section structure schematic diagram of the solar energy backboard under the specific embodiment of the invention;
Fig. 2 is the part-structure enlarged drawing of adhesion layer 110 in Fig. 1;
Fig. 3 is the cross section structure schematic diagram of the solar module under the specific embodiment of the invention.
Embodiment
The embodiment of the invention discloses a kind of solar energy backboard, the solar energy backboard comprises adhesion layer, body layer and the layer of anti-the ultraviolet, body layer is between adhesion layer and the layer of anti-the ultraviolet, adhesion layer Wei Haihu island clad structure, Hai Hu island clad structure comprises some unit, island that formed mutually by the material of main part of body layer, some unit, lake formed mutually by the bulking agent material and the extra large unit formed mutually by attachment material, wherein, unit, coating island, ，Hu unit, unit, coating lake, extra large unit.
The embodiment of the invention also discloses a kind of encapsulating structure of solar module, comprise glass, potting resin and solar energy backboard, wherein, the solar energy backboard adopts solar energy backboard as above, and the body layer of solar energy backboard is attached on potting resin by adhesion layer.
The embodiment of the invention also discloses a kind of solar module, comprise some solar battery sheets that mutual series and parallel connects, and, for encapsulating the encapsulating structure of solar battery sheet, wherein, encapsulating structure adopts encapsulating structure as above.
The embodiment of the present invention proposes the solar energy backboard and is set to comprise adhesion layer, body layer and the outer field three-decker of anti-purple, body layer is between adhesion layer and the layer of anti-the ultraviolet, adhesion layer Wei Haihu island clad structure, Hai Hu island clad structure comprises some unit, island that formed mutually by the material of main part of body layer, some unit, lake that formed mutually by the bulking agent material and the extra large unit formed mutually by attachment material, wherein, unit, coating lake, unit, sea, unit, coating island, unit, lake, because the extra large unit formed mutually by attachment material in adhesion layer and potting resin have very good tack, the unit, island formed mutually by the material of main part of body layer in adhesion layer has very good tack with body layer again, between the unit, island that the unit, lake simultaneously formed mutually by the bulking agent material in adhesion layer makes again the extra large unit that formed mutually by attachment material and material of main part by body layer form mutually, carry out very well compatible, final solar energy backboard and potting resin are realized very good adhering to, effectively guarantee between solar energy backboard and potting resin to possess excellent adhesion property.
In order to make those skilled in the art person understand better the technical scheme in the present invention, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making under the creative work prerequisite the every other embodiment obtained, should belong to the scope of protection of the invention.
Shown in Figure 1, a kind of solar energy backboard of solar module, solar energy backboard 100 comprises adhesion layer 110, body layer 120 and the layer of anti-ultraviolet the 130, body layer 120 is between adhesion layer 110 and the layer of anti-ultraviolet the 130, and adhesion layer 110 is attached to the potting resin 200 of solar module 10 for body layer 120; Particularly, potting resin 200 is the EVA resin.Specifically preferably, the thickness of body layer 120 is 0.1-0.3mm, and the thickness of adhesion layer 110 is 0.01-0.1mm, and the thickness of the layer of anti-ultraviolet the 130 is 0.01-0.075mm.
In order to ensure solar energy backboard in the embodiment of the present invention not only possess high mechanical properties, good dimensional stability, anti-flammability, high-insulation and with the prerequisite of the high tack of potting resin under, also possess excellence, the permanent weather resistance comprised as heat-resisting, hydrolysis and anti-ultraviolet etc. simultaneously, further particularly, in the present embodiment, body layer 120 comprises: the PPE resin of 40-95wt%; The ASA resin of 5-40wt%.
Because being body layer, technological core of the present invention adopts the blend of PPE resin and ASA resin, and a kind of adhesion layer with superior adhesion effect proposed, and the technological know-how level of those skilled in the art based on self, not needing to pay creative work just can know, in order further to improve the required various performances of solar energy backboard, under the prerequisite that does not affect the technology of the present invention effect, can be on the basis of the disclosed technology contents of the present invention according to self actual demand, select other to add material, therefore specifically do not launch one by one herein to repeat, and suitably quote Chinese invention patent that publication number is CN102414838A and do and exemplify explanation.
For resistance to impact and the processing characteristics that improves solar energy backboard 100, so that comprising of adopting during following process extruded, the thermoplastic manufacturing procedures such as injection moulding, preferably, in the present embodiment, body layer 120 further comprises the interpolation resin of 0-20wt%, add resin and be selected from the PS resin, the PP resin, the PA resin, the HIPS resin, the mixing of any one or a few in PE resin and EVA resin, these add resin can provide enough toughness for solar energy backboard 100 raw material, so that carry out following process as above, additive can be also the resin that [0105] linkage section between 10 pages of publication number Chinese invention patent Instructions Page 9-that is CN102414838A is put down in writing, therefore no longer specifically repeat.
Particularly, in the present embodiment, the technology contents of record in Chinese invention patent Instructions Page 9 that the concrete material of PPE resin can be CN102414838A referring to publication number [0099] Duan Zhi [0101] section, can certainly adopt other any one known PPE resin.Wherein, preferably, the PPE resin in embodiment of the present invention is grafted with the copolymer of styrene compound, can further effectively guarantee the good blend of PPE resin and ASA resin in the embodiment of the present invention; Further particularly, styrene compound can be styrene, AMS, vinyltoluene, chlorostyrene etc., natch, in other embodiments, the copolymer of styrene compound can be also the copolymer that adopts other concrete styrene compound copolymerization to form.
Further specifically preferably, in the present embodiment, can also add other functional additive at body layer 120: for example, in order further to improve the anti-flammability of solar energy backboard 100, can in body layer 120, add the fire retardant that is applicable to mass parts, the technology contents of record in Chinese invention patent Instructions Page 10 that the concrete material of fire retardant and mass parts can be CN102414838A referring to publication number equally [0106] Duan Zhi [0109] section, can certainly adopt other any one known fire retardant; For example, in order further to improve the antioxidant effect of solar energy backboard 100 in the course of processing and long-term the use, can in body layer 120, add the antioxidant that is applicable to mass parts, the technology contents of record in the 40th page of [0444] Duan Zhi [0448] section of the Chinese invention patent specification that the concrete material of antioxidant and mass parts can be CN102414838A referring to publication number equally; For example, in order further to improve the thermal stability of solar energy backboard 100 in the course of processing and long-term the use, can in body layer 120, add the heat stabilizer that is applicable to mass parts, the related content of putting down in writing in the Chinese invention patent specification that its concrete material and mass parts can be CN102414838A referring to publication number equally; For example, the thermoplastic manufacturing procedures such as comprising of adopting during for the ease of solar energy backboard 100 following process extruded, injection moulding, can in body layer 120, add the plasticizer that is applicable to mass parts, plasticizer can be oil, low molecular weight polyethylene, epoxidised soybean oil, polyethylene glycol, fatty acid ester etc.For example, in order further to improve the anti-ultraviolet effect of solar energy backboard 100, can in body layer 120, add the ultraviolet absorber of applicable mass parts or/and UV stabilizer, the technology contents of record in 29 pages [0323] section of the 25th page of [0283] Duan Zhi of the Chinese invention patent specification that its concrete material and mass parts can be CN102414838A referring to publication number equally, can certainly in body layer 120, add the Chinese white or the black pigment that are applicable to mass parts, more preferably, Chinese white adopts titanium dioxide, black pigment adopts carbon black, can certainly be referring to the technology contents of record in the 14th page of [0146] Duan Zhi [0147] section of CN102414838A patent specification.
Can also be as described in the 10th page [0110] section of CN102414838A patent specification, as long as under the prerequisite of impact core technology effect of the present invention, can also add the additive of other composition according to actual needs: for example, for inorganic filling materials such as the carbon filler that further improves thermal endurance and mechanical strength, glass filler, talcum, micas.
For there is the not good defect of mutual capacitive in PPE material and the EVA resin 200 overcome in body layer 120, preferably, the embodiment of the present invention also provides a kind of better superior adhesion layer 110 structures of adhesion effect that make between body layer 120 and EVA resin 200, particularly, please further shown in Figure 2, adhesion layer 110 Wei Haihu island clad structures, Hai Hu island clad structure comprises some unit, island 111 that formed mutually by the material of main part of body layer 120, some unit, lake 112 that formed mutually by the bulking agent material and the extra large unit 113 formed mutually by attachment material, wherein, unit, sea 113 coats unit, lake 112, unit, lake 112 coats unit, island 111, further particularly, adhesion layer 110 comprises the polyolefin resin of 20-70wt%, the PPE resin of 20-50wt%, the bulking agent of 10-40wt%, wherein, polyolefin resin is attachment material, the material of main part that the PPE resin is body layer 120, because the extra large unit 113 formed mutually by polyolefin resin in adhesion layer 110 has very good tack with EVA resin 200, the unit, island 111 formed by the PPE resin-phase in adhesion layer 110 has very good tack with body layer 120 again, the unit, lake 112 simultaneously formed mutually by the bulking agent material in adhesion layer 110 make again between the extra large unit 113 formed mutually by polyolefin resin and the unit, island 111 formed by the PPE resin-phase, carry out very well compatible, final solar energy backboard 100 is realized very good adhering to EVA resin 200.Particularly, the concrete composition of polyolefin resin can be referring to the technology contents of record in the 11st page [0117] section of CN102414838A patent specification.
Related bulking agent can claim compatibilizing agent again in the present embodiment, refers to by means of intermolecular bonding force, impels the not good polyolefin resin of compatibility and PPE resin to be combined in well one, and then obtains the auxiliary agent of stable blend.Particularly, in the present embodiment, bulking agent can be block or the graft copolymer identical with the chemical composition of polyolefin resin and PPE resin, can be also that chemical composition from polyolefin resin and PPE resin is different but can distinguish compatible with it block or graft copolymer.
Further particularly, bulking agent can adopt cyclic acid anhydride type, carboxylic acid type, epoxy type, oxazoline type, imide-type and isocyanate-based polymer bulking agents, can also adopt low molecule-type bulking agent, can certainly adopt existing any one to be beneficial to polyolefin resin and the PPE resin carries out the bulking agent held mutually, these believe that those skilled in the art carrys out specifically to select the composition of bulking agent according to the actual requirements.
More preferably, adhesion layer 110 further comprises the uvioresistant additive of 5-30wt% and/or the anti-deformation additive of 5-30wt%, the uvioresistant additive is selected from any one or a few the mixing in ASA resin, Chinese white, black pigment and microballon, and anti-deformation additive is the rubber resin with nucleocapsid structure.More preferably, in the present embodiment, Chinese white adopts titanium dioxide, and black pigment adopts carbon black, can certainly be referring to the technology contents of record in the 14th page of [0146] Duan Zhi [0147] section of CN102414838A patent specification.Further particularly, the rubber resin that has a nucleocapsid structure can be styrene, acrylic acid, organosilicon, butadiene be monomer monobasic or multiple copolymer.
Specifically preferably, the layer of anti-ultraviolet the 130 comprises the resin of anti-ultraviolet of 40-90wt%, the uvioresistant additive of 5-40wt% and the PPE resin of 5-40wt%, the resin of anti-the ultraviolet is selected from any one in fluorine resin, PA resin and PET resin, more preferably, the resin of anti-the ultraviolet is PA resin or PET resin, is beneficial to the subsequent recovery utilization of solar energy backboard 100 materials.The uvioresistant additive is selected from any one or a few the mixing in ASA resin, Chinese white, black pigment and microballon.More preferably, in the present embodiment, Chinese white adopts titanium dioxide, and black pigment adopts carbon black, can certainly be referring to the technology contents of record in the 14th page of [0146] Duan Zhi [0147] section of CN102414838A patent specification.
In order further to improve the ultra-violet resistance of the layer of anti-ultraviolet the 130 and adhesion layer 110, preferably, in the present embodiment, contain some microballons (figure does not specifically illustrate) in the layer of anti-ultraviolet the 130 and adhesion layer 110, the particle size range of microballon is 0.5-10 μ m, microballon can play very good reflecting effect to ultraviolet ray, thereby can further improve the ultra-violet resistance of the layer of anti-ultraviolet the 130 and adhesion layer 110 in the present embodiment.
Preferably, solar energy backboard 100 adopts coextruding method or rolling process or cladding process to prepare moulding.Particularly, coextruding method, rolling process and cladding process all can adopt existing any one known method to prepare moulding, natch, and also can be referring to the correlation technique content of putting down in writing in the CN102414838A patent specification.More preferably, in the present embodiment, solar energy backboard 100 adopts coextruding method to prepare moulding, obtain the coextrusion mold structure, avoid the bonding agent adopted in rolling process, therefore the recovery that is beneficial to solar energy backboard 100 materials is used, and have at present conventional solar energy backboard 100 now owing to being mostly fluorine material, and adopt bonding agent to carry out calendering formation, therefore solar module is after reaching useful life (being generally 25 years), multiplex landfill disposal, recycle not only bad for raw-material, also has a strong impact on environment.
Further, because the PPE resin has high rigidity, and toughness is poor, thereby usually be difficult to carry out coextruding heat and prepare processing and forming, and the ASA resin that the embodiment of the present invention provides is owing to possessing high tenacity (being elongation at break), the fluidity of molten that adds man-hour at thermoplastic is very excellent, therefore the body layer formed by PPE resin and ASA mixed with resin that the embodiment of the present invention provides can be particularly suitable for carrying out coextruding heat and prepare processing and forming, the good characteristic that this Chinese invention patent that is equally publication number is CN102414838A does not possess, the technical scheme of the embodiment of the present invention is simple, and effectively promoted the good commercial application of the embodiment of the present invention, and follow-up recycling.
In order to save the word length of this paper, the chemical substance that this patent adopts it has mainly adopted the simplification title to indicate, and concrete corresponding namelist is asked for an interview following table 1:
The corresponding namelist of table 1
| Simplify title | Full name (English and/or Chinese) |
| EVA | Ethylene/vinyl acetate, ethylene-vinyl acetate copolymer |
| PET | Polyethylene terephthalate, poly terephthalic acid class plastics |
| PVF | Polyvinyl fluoride, polyvinyl fluoride |
| PE | Polyethylene, polyethylene |
| PPE | Polyphenylene oxide |
| ASA | Acrylonitrile-styrene-acrylate, acrylonitrile/styrene |
| PS | Polystyrene, polystyrene |
| PP | Polypropylene, polypropylene |
| PA | Polyamide, polyamide (claiming again nylon nylon) |
| HIPS | High Impact Polystyrence, high impact polystyrene |
For the weatherability of further checking solar energy backboard 100 of the present invention with and with the technique effect (specifically referring to following table 2) of the tack of EVA resin 200, the present invention exemplifies following specific embodiment:
Embodiment 1:
Shown in Figure 1, a kind of solar energy backboard 100 of solar module, solar energy backboard 100 comprises adhesion layer 110, body layer 120 and the layer of anti-ultraviolet the 130, body layer 120 is between adhesion layer 110 and the layer of anti-ultraviolet the 130, adhesion layer 110 is attached to the EVA resin 200 of solar module for body layer 120, the thickness of body layer 120 is 0.2mm, and the thickness of adhesion layer 110 is 0.06mm, and the thickness of the layer of anti-ultraviolet the 130 is 0.04mm.
Wherein, adhesion layer 110 Wei Haihu island clad structures, Hai Hu island clad structure comprises some unit, island that formed mutually by the material of main part of body layer 120, some unit, lake formed mutually by the bulking agent material and the extra large unit formed mutually by attachment material, wherein, unit, coating island, ，Hu unit, unit, coating lake, unit, sea.
The layer of anti-ultraviolet the 130 comprises: the carbon black of the PET resin of 60wt%, the ASA resin of 15wt%, 8wt%, the microballon of 12wt% and the PPE resin of 5wt%, wherein, the particle size range of microballon is 0.5-10 μ m.
In the present embodiment, solar energy backboard 100 adopts the coextruding method that belongs to known technology to prepare moulding, therefore obtains three layers of compound coextrusion mold structure, is conducive to follow-up MAT'L recycling.
Embodiment 2:
All the other are identical with above-described embodiment 1, distinguish and only be, the body layer 120 in the present embodiment 2 comprises: the interpolation resin formed by PS resin, PP resin and EVA mixed with resin of the PPE resin of 70wt%, the ASA resin of 15wt%, 5wt%, the titanium dioxide of 2.5wt%, the antioxidant of 2.5wt%, the heat stabilizer of 3wt% and the plasticizer of 2wt%.
Embodiment 3:
All the other are identical with above-described embodiment 1, distinguish and only be, the body layer 120 in the present embodiment 3 comprises: the interpolation resin formed by PS resin, PP resin and PE mixed with resin of the PPE resin of 80wt%, the ASA resin of 5wt%, 5wt%, the titanium dioxide of 2.5wt%, the antioxidant of 2.5wt%, the heat stabilizer of 3wt% and the plasticizer of 2wt%.
Embodiment 4:
All the other are identical with above-described embodiment 1, distinguish and only are, the body layer 120 in the present embodiment 4 comprises: the interpolation resin formed by HIPS resin, PP resin and PA mixed with resin of the PPE resin of 90wt%, the ASA resin of 7wt%, 3wt%.
Embodiment 5:
All the other are identical with above-described embodiment 1, distinguish and only are, the body layer 120 in the present embodiment 5 comprises: the PPE resin of 95wt%, the ASA resin of 5wt%.
Embodiment 6:
All the other are identical with above-described embodiment 1, distinguish and only be, the body layer 120 in the present embodiment 6 comprises: the interpolation resin formed by PS resin, PP resin, PA resin and PE mixed with resin of the PPE resin of 60wt%, the ASA resin of 25wt%, 5wt%, the titanium dioxide of 2.5wt%, the antioxidant of 2.5wt%, the heat stabilizer of 3wt% and the plasticizer of 2wt%.
Embodiment 7:
All the other are identical with above-described embodiment 1, distinguish and only be, the body layer 120 in the present embodiment 7 comprises: the interpolation resin formed by HIPS resin, PP resin and PA mixed with resin of the PPE resin of 50wt%, the ASA resin of 25wt%, 5wt%, the titanium dioxide of 5wt%, the antioxidant of 5wt%, the heat stabilizer of 5wt% and the plasticizer of 5wt%.
Embodiment 8:
All the other are identical with above-described embodiment 1, distinguish and only be, the body layer 120 in the present embodiment 8 comprises: the interpolation resin formed by PS resin, PP resin, PA resin, PE resin and EVA mixed with resin of the PPE resin of 40wt%, the ASA resin of 40wt%, 10wt%, the titanium dioxide of 2.5wt%, the antioxidant of 2.5wt%, the heat stabilizer of 3wt% and the plasticizer of 2wt%.
Embodiment 9:
All the other are identical with above-described embodiment 1, and difference only is: the body layer 120 in the present embodiment 9 comprises: the interpolation resin formed by PS resin, PP resin and PA mixed with resin of the PPE resin of 75wt%, 15wt%, the titanium dioxide of 2.5wt%, the antioxidant of 2.5wt%, the heat stabilizer of 3wt% and the plasticizer of 2wt%.
Embodiment 10:
All the other are identical with above-described embodiment 1, and difference only is: the body layer 120 in the present embodiment 10 comprises: the interpolation resin formed by PS resin, PP resin and PA mixed with resin of the PPE resin of 75wt%, 10wt%, the titanium dioxide of 5wt%, the antioxidant of 5wt%, the heat stabilizer of 3wt% and the plasticizer of 2wt%.
Comparative example 1:
Adopt existing business-like TPT type solar energy backboard.
Comparative example 2:
Adopt existing business-like TPE type solar energy backboard.
Comparative example 3:
All the other are identical with the embodiment of the present invention 1, difference only is: the adhesion layer in this comparative example 3 comprises: the microballon of the ASA resin of the polyolefin resin of 75wt%, 10wt%, the titanium dioxide of 6wt%, 5wt% and the rubber resin with nucleocapsid structure of 4wt%, wherein, the particle size range of microballon is 0.5-10 μ m.
Comparative example 4:
All the other are identical with the embodiment of the present invention 1, and difference only is: the solar energy backboard in this comparative example 4 comprises body layer and the layer of anti-the ultraviolet; The thickness of body layer is 0.2mm, and the outer field thickness of anti-purple is 0.04mm.
Table 2 implementation result relatively
Concrete method of testing explanation:
(1), thermal endurance, hydrolytic resistance
The solar energy backboard sample that coextrusion mold is obtained is positioned under the environment that temperature is 85 ℃, in the environment that relative humidity is 85%, places 3000 hours, observes the variation of solar energy backboard.
(2), ultra-violet resistance
The solar energy backboard sample that coextrusion mold is obtained is positioned in the ultraviolet lighting environment that wave-length coverage is 200-400nm and places 300 hours, observes the variation of solar energy backboard.
(3), with the tack of EVA resin
Adhesion layer in the solar energy backboard sample that coextrusion mold is obtained carries out 180 ° to be peeled off, and records peeling force, wherein:
√: represent that peel strength is more than 40N/15mm;
Δ: represent that peel strength is between 10-40N/15mm;
*: represent that peel strength is below 10N/15mm.
Shown in Figure 3, a kind of encapsulating structure of solar module, comprise glass 300, potting resin 200 and solar energy backboard 100, wherein, solar energy backboard 100 adopts solar energy backboard 100 as above, and the body layer 120 of solar energy backboard 100 is attached on potting resin 200 by adhesion layer 110.
Shown in Figure 3, a kind of solar module 10, comprise some solar battery sheets 400 that mutual series and parallel connects, and, for encapsulating the encapsulating structure of solar battery sheet 400, wherein, encapsulating structure adopts encapsulating structure as above.
To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned example embodiment, and in the situation that do not deviate from spirit of the present invention or essential characteristic, can realize the present invention with other concrete form.Therefore, no matter from which point, all should regard embodiment as exemplary, and be nonrestrictive, scope of the present invention is limited by claims rather than above-mentioned explanation, therefore is intended to include in the present invention dropping on the implication that is equal to important document of claim and all changes in scope.Any Reference numeral in claim should be considered as limit related claim.
In addition, be to be understood that, although this specification is described according to execution mode, but not each execution mode only comprises an independently technical scheme, this narrating mode of specification is only for clarity sake, those skilled in the art should make specification as a whole, and the technical scheme in each embodiment also can, through appropriate combination, form other execution modes that it will be appreciated by those skilled in the art that.
Claims (10)
1. a solar energy backboard, described solar energy backboard comprises adhesion layer, body layer and the layer of anti-the ultraviolet, described body layer is between described adhesion layer and the described layer of anti-the ultraviolet, it is characterized in that, described adhesion layer Wei Haihu island clad structure, described Hai Hu island clad structure comprises some unit, island that formed mutually by the material of main part of body layer, some unit, lake formed mutually by the bulking agent material and the extra large unit formed mutually by attachment material, wherein, described extra large unit coats unit, described lake, and unit, described lake coats unit, described island.
2. solar energy backboard as claimed in claim 1, is characterized in that, the described layer of anti-the ultraviolet/and described adhesion layer in contain some microballons, the particle size range of described microballon is 0.5-10 μ m.
3. solar energy backboard as claimed in claim 1, is characterized in that, the thickness of described adhesion layer is 0.01-0.1mm, and the thickness of described body layer is 0.1-0.3mm, and the outer field thickness of described anti-purple is 0.01-0.075mm.
4. solar energy backboard as claimed in claim 1, is characterized in that, described solar energy backboard is the coextrusion mold structure.
5. solar energy backboard as claimed in claim 1, is characterized in that, the material of main part of described body layer is the PPE resin; Described body layer specifically comprises:
The PPE resin of 40-95wt%;
The ASA resin of 5-40wt%.
6. solar energy backboard as claimed in claim 1, it is characterized in that, the described layer of anti-the ultraviolet comprises the resin of anti-ultraviolet of 40-90wt% and the uvioresistant additive of 5-40wt%, the described resin of anti-the ultraviolet is selected from any one in fluorine resin, PA resin and PET resin, and described uvioresistant additive is selected from any one or a few the mixing in ASA resin, Chinese white, black pigment and microballon.
7. the encapsulating structure of a solar module, comprise glass, potting resin and solar energy backboard, it is characterized in that, described solar energy backboard adopts solar energy backboard as described as any one in claim 1-6, and the body layer of described solar energy backboard is attached on described potting resin by described adhesion layer.
8. the encapsulating structure of solar module as claimed in claim 7, is characterized in that, described adhesion layer comprises the polyolefin resin of 20-70wt%, the PPE resin of 20-50wt%, the bulking agent of 10-40wt%.
9. the encapsulating structure of solar module as claimed in claim 8, it is characterized in that, described adhesion layer further comprises the uvioresistant additive of 5-30wt% and/or the anti-deformation additive of 5-30wt%, described uvioresistant additive is selected from any one or a few the mixing in ASA resin, Chinese white, black pigment and microballon, and described anti-deformation additive is the rubber resin with nucleocapsid structure.
10. a solar module, comprise some solar battery sheets that mutual series and parallel connects, with for encapsulating the encapsulating structure of described solar battery sheet, it is characterized in that, described encapsulating structure adopts encapsulating structure as described as any one in claim 7-9.
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| CN110023437A (en) * | 2015-03-13 | 2019-07-16 | 杜邦帝人薄膜美国有限公司 | PV battery and backboard polyester film |
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| US6369316B1 (en) * | 1998-07-03 | 2002-04-09 | ISOVOLTA Österreichische Isolierstoffwerke Aktiengesellschaft | Photovoltaic module and method for producing same |
| CN102177204A (en) * | 2008-10-09 | 2011-09-07 | 旭硝子株式会社 | Dark-colored fluororesin film, and back sheet for solar battery module |
| CN203617306U (en) * | 2013-09-06 | 2014-05-28 | 苏州柯莱美高分子材料科技有限公司 | Solar energy backboard, packaging structure and solar module |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6369316B1 (en) * | 1998-07-03 | 2002-04-09 | ISOVOLTA Österreichische Isolierstoffwerke Aktiengesellschaft | Photovoltaic module and method for producing same |
| CN102177204A (en) * | 2008-10-09 | 2011-09-07 | 旭硝子株式会社 | Dark-colored fluororesin film, and back sheet for solar battery module |
| CN203617306U (en) * | 2013-09-06 | 2014-05-28 | 苏州柯莱美高分子材料科技有限公司 | Solar energy backboard, packaging structure and solar module |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110023437A (en) * | 2015-03-13 | 2019-07-16 | 杜邦帝人薄膜美国有限公司 | PV battery and backboard polyester film |
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