CN203807378U - Solar cell encapsulating adhesive structure - Google Patents
Solar cell encapsulating adhesive structure Download PDFInfo
- Publication number
- CN203807378U CN203807378U CN201420127846.7U CN201420127846U CN203807378U CN 203807378 U CN203807378 U CN 203807378U CN 201420127846 U CN201420127846 U CN 201420127846U CN 203807378 U CN203807378 U CN 203807378U
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- barrier film
- packaging plastic
- line
- encapsulation glue
- eva
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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
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Abstract
The utility model relates to a solar cell encapsulating adhesive structure which comprises an encapsulating adhesive layer and at least one blocking thin film layer or comprises an encapsulating adhesive layer, at least one blocking thin film, and at least one adhesive layer distributed on one side, close to a solar cell, of the blocking thin film, wherein the blocking thin film is compounded with the encapsulating adhesive layer together or the blocking thin film is compounded with the encapsulating adhesive layer and the adhesive layer together; the flowability of the blocking thin film is smaller than that of the encapsulating adhesive layer. According to the utility model, the blocking thin film with low flowability is compounded with an encapsulating adhesive, and as the flowability of the blocking thin film is lower than that of the encapsulating adhesive, the blocking thin film is more difficult to overflow compared with the encapsulating adhesive and has a good blocking effect on the overflow of the encapsulating adhesive with high flowability; as a crosslinked body encapsulating adhesive with high flowability on the lower layer, can be fused with the blocking thin film with low mobility on the upper layer at a high temperature during lamination, so that enough bonding force can still be kept.
Description
Technical field
The utility model relates to a kind of film structure, particularly a kind of solar battery sheet packaging plastic structure.
Background technology
Rear surface of solar cell packaging plastic is not owing to needing very high light transmission, and can adopt transmittance is not very high glued membrane, or adds some filler to increase function, reduce costs.As adopted compared with the glue of low-transmittance, when reducing costs, protection backboard, reduces the infringement of ultraviolet ray to backboard; Add the filler that reflectivity is high, as TiO
2filler improves its reflectivity, thereby flashes back the sunlight, and by battery, is heavily absorbed, and improves solar cell power; Add heat conductive filler to improve the heat conductivility of back side packaging plastic, reduce temperature to impact of battery efficiency etc.In addition, in order to make cell piece absorb the energy of ultraviolet band sunlight, side to light packaging plastic is avoided the interpolation of uv-absorbing agent more, makes UV-light can arrive cell piece surface, adds uv-absorbing agent in shady face packaging plastic simultaneously, and protection backboard is avoided uv damage.This structure is in weathering process, and uv-absorbing agent can migrate to side to light packaging plastic, thereby cause ultraviolet portion can not arrive cell piece surface, loses certain transformation efficiency.In shady face packaging plastic, add the filler with shaded effect and can well protect backboard, because mineral filler is difficult to move in system, can well keep transformation efficiency simultaneously.But such back side packaging plastic, packaging plastic that can be very high with side to light transparency in the process of lamination merges mutually, at intersection, easily shows fold, lines, and easily overflows to cell piece or welding surface, keeps the sun off and has a strong impact on assembly outward appearance.Present stage, packaging plastic was EVA or polyolefins substantially, in industry general requirement packaging plastic degree of crosslinking more than 70%, to the bonding force of glass more than 60N/mm.Side to light and shady face generally adopt the similar EVA of mobility.
Solar cell develops into now, and it is all a great technical progress that 1% even less generated output improves.Be not only solar battery sheet itself, packaged material is as the important component part of solar components, and it also needs deep excavation to the contribution of power.Side to light, the function of shady face packaging plastic in solar cell with require differently, its further refinement can bring other advantages such as reduction of power gain or cost, will be trend of the times.
Prior art roughly has following four kinds of schemes:
1, adopt heat curing-type packaging plastic and the low-transmittance heat curing-type packaging plastic of layer of transparent compound.This method is isolated with layer of transparent glue-line, stops that white packaging plastic pollutes cell piece.But this method was not studied the basic reason of overflow or lines generation, similarly patent as application number be 201220587305.3, two glass photovoltaic modulies, between cell piece and white back packaging plastic, add transparent enclosure glue, the flow characteristics of packaging plastic and processing method thereof are not explained and furtherd investigate, in fact to avoid white backlight face packaging plastic overflow to pollute cell piece, the shady face packaging plastic of being close to cell piece is not necessarily transparent, can make white or other colors that transparency is very low completely, and do not have the problem of appearance of any overflow or lines.Two kinds of similar glue of mobility are combined with each other, the infiltration of still can flowing during lamination, and more liquid transparent enclosure glue iris action is limited, in this way unsatisfactory to the control of lines, overflow.These add the method for layer of transparent layer between cell piece and back side white packaging plastic in addition, and the effect flashing back the sunlight is slightly inferior, because transparent adhesive tape itself can have certain absorption to sunlight, can increase catoptrical light path, has weakened and has put forward high-power effect.This patent proves by experiment, between cell piece and back side packaging plastic, do not need to add layer of transparent film just can prevent the back side packaging plastic overflow that the transparency is not good enough, as long as the method for introducing according to this patent, cell piece also can directly contact with transparent not good enough back side packaging adhesive film, or can greatly reduce the thickness of transparent layer between cell piece and back side packaging plastic, thereby can more directly flash back the sunlight or conduct heat or complete other effects, and the adhesive effect of whole system and degree of crosslinking institute are influenced little.
2, adopt glass fibre and back side packaging plastic compound.This had an authorized patent.(application number is 201220121792.4, a kind of white EVA and glasscloth composite solar battery packaging adhesive film) but glass fibre has certain danger, and respiratory system and skin are had to infringement, and a lot of people is irritated to glass fibre.This method can be brought certain potential safety hazard, and the glass fibre that this method adopts in addition need to pass through special processing treatment, and cost compare is high.
3, reduce the mobility of packaging plastic.Mobility is reduced to and to a certain degree can realizes back side glue without overflow and lines, but the reduction of mobility certainly will reduce the adhesiveproperties of packaging plastic, especially in the solar cell of double glazing encapsulation, back side packaging plastic is wanted adhering glass away from cell piece one side, to its bonding force, requires also very high.This method cannot be taken into account the bonding force away from the packaging plastic of cell piece one side.
4. adopt non-woven fabrics and back side packaging plastic compound.This had an authorized patent (application number is 201220724624.4, and publication number is CN203013768U photovoltaic module with high reflection EVA glued membrane).This method also can well be avoided overflow, but shortcoming be, on the one hand, non-woven fabrics is that polymer processing becomes fibrous and through subsequent disposal, forms, and cost is higher, and most of non-woven fabrics fibers easily bend, easy deformation while being pullled is difficult to avoid the generation of lines or decorative pattern in lamination.In addition, in nonwoven surface, add layer of transparent EVA film again, increased the light path of incident light, (light could arrive reflective EVA through transparent barrier layer, light after reflection need to pass through transparent barrier layer again, could again arrive cell piece) reduced the reflecting effect of light reflecting material.Non-woven fabrics is highly crystalline material in addition, is difficult to merge mutually with packaging plastic, can introduce weak link.
Utility model content
The purpose of this utility model is to overcome above-mentioned deficiency, and a kind of solar battery sheet packaging plastic structure is provided, and this kind of structure can overflow can not cause lines and fold, do not affect degree of crosslinking and reflecting effect.
The technical scheme that the utility model is taked is:
A kind of solar battery sheet packaging plastic structure, comprise encapsulation glue-line and one deck barrier film layer at least, or comprise encapsulation glue-line, at least one deck barrier film, be distributed in barrier film near at least one deck bond layer of cell piece one side, barrier film is combined with each other with encapsulation glue-line, or barrier film and encapsulation glue-line and bond layer are combined with each other, and the mobility of described barrier film is less than the mobility of encapsulation glue-line.
Described barrier film is with the weak link of punching or embossing causes.
The mobility of described barrier film, characterizes with melting index, is all less than 20g/10min, (testing method is with reference to ASTM D1238,2.16kg) between 80～150 ℃.Barrier film can also can be white or other color for transparent.
Described transparent obstructive film can be selected PP, PET, PO, PVC, EVA, PE, PIB, the materials such as IIR.Screening formulation contain adhesion promoters or formula contain high-reflectivity filler or the polymkeric substance that contains easy crosslinking component make barrier film.
Between the thickness 0.0001mm～1mm of described barrier film, preferably between 0.001mm～0.5mm.
Described encapsulation glue-line preferred white EVA layer.
The MI of encapsulation glue-line and bond layer is less than 150g/10min(testing method with reference to ISO1133, and 190 degrees Celsius, 2.16kg).
The preparation method of above-mentioned solar battery sheet packaging plastic structure:
By barrier film and encapsulation glue-line, or barrier film and encapsulation glue-line, bond layer adopt the mode being coated with compound; Or double-deck, the multi-layer co-extruded mode is compound; Or make respectively separately barrier film, encapsulation glue-line, bond layer, when lamination, by each film lamination in order, the temperature and pressure during by lamination makes it compound; Or first prepare wherein one deck or two-layer, other layer is compound or compound by tackiness agent with the layer hot pressing having prepared.
It is to be noted in addition, barrier film is after compound with common packaging plastic, due to compound, can at packaging plastic and barrier film is whole or a kind of carry out during in viscous state, two kinds of films may not easily separate obvious boundary, in such cases, add barrier film can cause back side packaging plastic structure to there is inhomogeneous mobility at thickness direction.Back side packaging plastic structure also can mutually merge when lamination, and barrier film and packaging plastic boundary are not obvious, little near the mobility of barrier film one side, large away from the mobility of barrier film one side.After lamination in some cases, packaging plastic structure occurs certain crosslinked, mobility reduces greatly, cannot judge its crosslinked front mobility, now should be from the processing temperature judgement of two kinds of films, if packaging plastic is elevated to a certain degree and can be cross-linked in temperature, the general character of ownership system Preparation Method is, barrier film has different minimum processing temperatures from encapsulation glue-line.Barrier film, because mobility is poor, guarantee to produce linear velocity and avoid production efficiency to be had a strong impact on, and needs higher melt temperature while extruding; And cross-linking type encapsulation glue-line is extruded generation gel for avoiding under comparatively high temps adding man-hour, its processing temperature is restricted.So the processing temperature of barrier film, higher than the processing temperature of encapsulation glue-line, needs separate machined.The utility model utilizes the barrier film that one deck mobility is very low compound with encapsulation glue-line, can adopt melting hot pressing compound, directly lay or other complex methods, because the mobility of barrier film own is less than encapsulation glue-line, on the one hand, it encapsulates the more difficult generation overflow of glue-line, and has good restriction for the overflow of high workability packaging plastic.On the other hand, because barrier film mobility is less than packaging plastic, the packaging plastic that barrier film that during lamination, mobility is lower is can flow higher mobile plays certain pining down and constraint effect, the lines that produces on " transparent-white " interface when packaging plastic is flowed not obvious and even completely dissolve, so greatly improved the phenomenon of lines, fold.Barrier film to be further improved in the face of the bonding force of glass, also one deck bond layer can be on barrier film, increased.
Barrier film also can be for side to light, compound with side to light transparent enclosure glue.Shady face adopts white similar to side to light transparent enclosure glue of mobility or other poor packaging plastics of light transmission such as white.During lamination, barrier film is facing to cell piece, and in assembly cell piece region in addition, barrier film is contact back side white packaging plastic directly.Barrier film improves the mechanism of action of overflow, lines and the applications similar at the back side: because its mobility is less than back side white packaging plastic, mobile to it on thickness direction has certain restriction, thereby controlled overflow phenomenon; Can the flow higher back side packaging plastic of the barrier film that simultaneously mobility is lower, in the mobile restraining function that plays of horizontal plane, avoids it on " transparent-white " interface, to produce lines or fold.
The utility model has been continued to use existing packaging plastic composition and engineering and has been made packaging plastic, guarantees that the bonding force of backboard or glass can not be affected.
Adopt punching barrier film or on barrier film, manufacture the weak links such as some decorative patterns, compound with encapsulation glue-line, in lamination, under the impact of temperature and pressure, have on the one hand packaging plastic and ooze out through hole or weak link, guarantee certain bonding force; Making hole film itself is difficult for tensile deformation on the other hand, has well avoided the generation of lines, decorative pattern, and the glue amount of simultaneously oozing out is controlled, also can avoid the overflow of back side packaging plastic.Through overtesting, confirm to adopt the compound white of punching barrier film to encapsulate the solar cell that glue-line is done, no matter be the control of overflow or the control of lines, all very perfect.The glued membrane that compound one deck is more liquid on barrier film, bonding force is stronger is as bond layer, its thickness is not more than cell piece thickness, its color can be for the lower color of the transmittance such as transparent or white be (if barrier film is positioned at side to light, bond layer need to guarantee enough transmittances), when having improved bonding force, guarantee that the packaging plastic that back side transmittance is lower is not enough to overflow to cell piece surface or forms the bad orders such as lines, fold.Through overtesting, this kind of packaging plastic that method obtains, the bonding force of outward appearance or barrier film face can both meet the demands.
Adopt softening temperature to make barrier film at the material 145 ℃ below, for improving its bonding force, can add therein adhesion promoters and easy crosslinked composition, then with to encapsulate glue-line compound, as packaging plastic integral body.When lamination, encapsulation glue-line can merge under molten state with compared with low flow barrier film, facilitates it partial cross-linked, thereby reach the effect that significantly improves bonding force during lamination under high temperature.Adopt two kinds or above composition to make barrier film material of main part, as added therein the material that bonding force is stronger, coordinate and add adhesion promoters, crosslinking coagent as barrier film, and carry out compound with packaging plastic main body.High temperature during by lamination completes heat cross-linking, improves its bonding force.Adopt bonding force compared with a kind of material that overflow or lines can occur by force and not, if polyvinyl butyral acetal is as barrier film material, this kind of material is employed as solar cell package material, although crosslinked during lamination, its adhesive effect and weathering resistance all can reach requirement.This patent confirms through overtesting, and this material does not have the problem of appearance such as any overflow, lines.Believe the development along with technology, also have meet the demands and cheap material is developed more, but in the situation that other conditions are identical, the method that application this patent proposes, can greatly improve and eliminate overflow, fold phenomenon even completely.
The utility model advantage is compared with the prior art:
1, required equipment is with low cost, has avoided high facility investment.
2, barrier film can adopt various material, as PP, and PET, PVC, PE etc. have the material of a lot of other advantages.Thereby can reduce the water vapor transmittance of whole back side packaging plastic, reduce material cost, improve body resistance and reduce assembly PID effect etc., to packaging plastic, bring extra advantage.
3, barrier film, because itself can overflow, can also add the filler of high-reflectivity to improve reflectivity, needn't necessarily keep its very high transparency, thereby has improved the effect of reflection.
4, lower cost for material, the cost of film is compared with non-woven fabrics, and glass fibre is all cheap.
5, this design can remain potted the enough degree of crosslinking of glue.Degree of crosslinking is influenced hardly in other words.
6, punching barrier film and packaging plastic is compound, is cross-linked etc. method when being allowed to condition at use, guarantees enough bonding forces.On film, suppress some lines, manufacture some weak links, in the process of lamination, packaging plastic still can penetrate these weak links, reaches and the similar effect of making hole film.
This patent proves by experiment, between cell piece and back side packaging plastic, do not need to add layer of transparent film just can prevent the back side packaging plastic overflow that the transparency is not good enough, as long as the method for introducing according to this patent, cell piece also can directly contact with transparent not good enough back side packaging adhesive film, thereby can more directly flash back the sunlight or conduct heat or complete other effects, and bad (as overflow, the lines phenomenon) of Assurance component outward appearance is very significantly improved until eliminate completely.The adhesive effect of whole system and degree of crosslinking are within the acceptable range.
Accompanying drawing explanation
Fig. 1 is the structure of general solar cell;
Fig. 2 is the utility model solar battery sheet packaging plastic structure;
Wherein, 1. side to light glass, 2. side to light packaging plastic is whole, 3. cell piece, 4. shady face packaging plastic is whole, 5. backboard or glass, 6. barrier film, 7. encapsulation glue-line.
Embodiment
Below in conjunction with embodiment, further illustrate.
Embodiment 1
A solar battery sheet packaging plastic structure, comprises one deck encapsulation glue-line, one deck barrier film layer successively.Barrier film is combined with each other with encapsulation glue-line, and during lamination, barrier film face is near cell piece, and encapsulation glue-line is near backboard side.The mobility of described barrier film is less than encapsulation glue-line, and encapsulation glue-line adopts white EVA, and the integral body that this barrier film and packaging plastic form of usining is whole as back side packaging plastic.
Preparation:
In mass fraction, by 100 parts of vinyl acetate contents, be 32wt%, MI is that EVA pellet, 6 parts of rutile titanium dioxides (R105 of Du Pont), 0.5 part of γ-methacryloxypropyl trimethoxy silane, the 1.5 parts of tertiary butyl-(2-ethylhexyl) single peroxy carbonates, 1 part of iso-cyanuric acid triallyl ester, the 0.2 part of Octabenzone of 40g/10min mixes through mixer, as encapsulation glue-line raw material.
In mass fraction, by 100 parts of vinyl acetate contents, be 24wt%, MI is the EVA master batch (BASF EVA V5110K) of 3.6g/10min, add 1.8 parts of Viscoat 295s, 6 parts of rutile titanium dioxides (selecting the R105 of Du Pont), 2 parts of γ-methacryloxypropyl trimethoxy silane, 0.2 part of Octabenzone mixes through batch mixing, as barrier film raw material.By barrier film raw material drawn, traction, rolling, make the barrier film that thickness is about 0.02mm.
Control temperature at 80～90 degrees Celsius, encapsulation glue-line raw material is extruded, drawn, traction, and compound with barrier film, making body material is the back side packaging plastic integral body of EVA.
Side to light packaging plastic integral body is selected Foster F806 transparent EVA glued membrane.
Successively by photovoltaic glass, side to light packaging plastic integral body, cell piece, back side packaging plastic is whole, backboard lamination, size of components 45 * 45cm, and at 150 ℃ of laminations, keep 30 minutes.
Embodiment 2
A solar battery sheet packaging plastic structure, comprises near one deck barrier film of cell piece one side and the encapsulation glue-line of close backboard or glass one side.Barrier film is combined with each other with encapsulation glue-line, the mobility of described barrier film is less than encapsulation glue-line, encapsulation glue-line adopts white EVA, the integral body that this barrier film and packaging plastic form of usining is whole as back side packaging plastic, side to light packaging plastic integral body is selected the transparent EVA glued membrane on market, as Foster F806.During lamination, barrier film face is near cell piece.
Preparation:
In mass fraction, by 100 parts of vinyl acetate contents, be 32wt%, MI is that the EVA pellet of 40g/10min, 6 parts of rutile titanium dioxides, 0.5 part of γ-methacryloxypropyl trimethoxy silane, the 1.5 parts of tertiary butyl-(2-ethylhexyl) single peroxy carbonates, 1 part of iso-cyanuric acid triallyl ester, 0.2 part of Octabenzone mix through mixer, as encapsulation glue-line raw material.
In mass fraction, by 100 parts of vinyl acetate contents, be 28wt%, MI is that the EVA master batch (Celanese EVA2803G) of 3g/10min adds 1.8 parts of Viscoat 295s, 6 parts of rutile titanium dioxides (selecting the R105 of Du Pont), 2 parts of γ-methacryloxypropyl trimethoxy silane, 0.1 part of Octabenzone, through batch mixing, mix, as barrier film raw material.By barrier film raw material drawn, traction, rolling, make the barrier film that thickness is about 0.03mm.
Barrier film, by cooling roller, is cooled to 90 degrees Celsius of left and right by its temperature, encapsulation glue-line raw material is extruded at 80～90 degrees Celsius, drawn, traction, and it is compound with barrier film hot pressing at 70～90 degree to control temperature, making body material is the back side packaging plastic integral body of EVA.
Side to light packaging plastic integral body is selected Foster F806 transparent EVA glued membrane.
Whole and the back side packaging plastic integral body of the side to light packaging plastic of usining as meeting light, shady face EVA carries out laminating packaging, size of components 45 * 45cm.。
Embodiment 3
A solar battery sheet packaging plastic structure, comprises near one deck barrier film of cell piece one side, near the encapsulation glue-line of backboard or glass one side, is distributed in barrier film near one deck bond layer of cell piece one side.Barrier film is combined with each other with encapsulation glue-line and bond layer, the mobility of described barrier film is less than encapsulation glue-line and bond layer, encapsulation glue-line adopts white EVA, the integral body that this barrier film, bond layer and packaging plastic form of usining is whole as back side packaging plastic, side to light packaging plastic is selected the transparent EVA glued membrane on market, as Foster F806.During lamination, bond layer is near cell piece.
Preparation:
In mass fraction, by 100 parts of vinyl acetate contents, be 32wt%, MI is the EVA pellet of 40g/10min, add 6 parts of rutile titanium dioxides (R-105 of Du Pont), 0.5 part of γ-methacryloxypropyl trimethoxy silane, the 1 part of tertiary butyl-(2-ethylhexyl) single peroxy carbonates, 1 part of iso-cyanuric acid triallyl ester, 0.2 part of Octabenzone to mix through mixer, as encapsulation glue-line raw material.
In mass fraction, by 100 parts of vinyl acetate contents, be 33wt%, MI is the EVA master batch of 50g/10min, add 6 parts of rutile titanium dioxides, 2.5 parts of γ-methacryloxypropyl trimethoxy silane, 1.5 parts of iso-cyanuric acid triallyl esters, the 1 part of tertiary butyl-(2-ethylhexyl) single peroxy carbonates, 0.3 part of Octabenzone, through mixer, mix, as bond layer raw material.
Adopt the BOPP film of the 0.003mm of Anhui Tongfeng Electron Co. as barrier film.Controlling temperature is 90 degree, compound one deck bond layer thereon, and the about 0.02mm of thickness, forms composite membrane.
Control temperature at 80～90 degrees Celsius, encapsulation glue-line raw material is extruded, drawn, traction, and compound with composite membrane, in composite membrane, bond layer, away from encapsulation glue-line, is made back side packaging plastic whole.
Side to light packaging plastic is selected Foster F806 transparent EVA glued membrane.
Whole and the back side packaging plastic integral body of the side to light packaging plastic of usining as meeting light, shady face EVA carries out laminating packaging.During the whole lamination of shady face packaging plastic with bond layer towards cell piece, size of components 45 * 45cm.
Embodiment 4
A solar battery sheet packaging plastic structure, comprises near one deck barrier film of cell piece one side, near the encapsulation glue-line of backboard or glass one side.Barrier film is combined with each other with encapsulation glue-line, the mobility of described barrier film is less than encapsulation glue-line, encapsulation glue-line adopts white EVA, the integral body that this barrier film and packaging plastic form of usining is whole as back side packaging plastic, side to light packaging plastic is selected the transparent EVA glued membrane on market, as Foster F806.During lamination, barrier film face is towards cell piece.
Preparation:
In mass fraction, by 100 parts of vinyl acetate contents, be 32wt%, MI is the EVA pellet of 40g/10min, add 6 parts of rutile titanium dioxides, 0.5 part of γ-methacryloxypropyl trimethoxy silane, the 1.5 parts of tertiary butyl-(2-ethylhexyl) single peroxy carbonates, 1 part of iso-cyanuric acid triallyl ester, 0.2 part of Octabenzone to mix through mixer, as encapsulation glue-line raw material.
In mass fraction, by 70 parts of PP master batch (MI2.8g/10min, testing method is with reference to ISO1133, 190 degrees Celsius of test conditions, 2.16kg) and 30 parts of vinyl acetate contents be 28wt%, MI is the EVA master batch of 3g/10min (Celanese EVA2803G), add 1 part of iso-cyanuric acid triallyl ester, 6 parts of rutile titanium dioxides (R-105 of Du Pont), 2.5 parts of γ-methacryloxypropyl trimethoxy silane, 0.1 part of Octabenzone, with mixer, mix, through two-way stretch, make the about 0.03mm barrier film of thickness, and punching thereon.Aperture is 0.2mm, and density is 49/cm2.
Control temperature at 80～90 degrees Celsius, encapsulation glue-line raw material is extruded, drawn, traction, and compound with barrier film, make back side packaging plastic whole.
Side to light packaging plastic is selected Foster F806 transparent EVA glued membrane.
Whole and the back side packaging plastic integral body of the side to light packaging plastic of usining as meeting light, shady face EVA carries out laminating packaging.Wherein, the barrier film in the packaging plastic integral body of the back side is towards cell piece, size of components 45 * 45cm.
Embodiment 5
A solar battery sheet packaging plastic structure, comprises near one deck barrier film of cell piece one side, near the encapsulation glue-line of backboard or glass one side.Barrier film is combined with each other with encapsulation glue-line, and the mobility of described barrier film is less than encapsulation glue-line, and encapsulation glue-line adopts white EVA layer.The integral body that this barrier film and packaging plastic form of usining is whole as back side packaging plastic, and side to light packaging plastic is selected the transparent EVA glued membrane on market, as Foster F806.During lamination, barrier film face is near cell piece.
Preparation:
In mass fraction, by 100 parts of vinyl acetate contents, be 32wt%, MI is the EVA pellet of 40g/10min, add 6 parts of rutile titanium dioxides (R-105 of Du Pont), 0.5 part of γ-methacryloxypropyl trimethoxy silane, the 1.5 parts of tertiary butyl-(2-ethylhexyl) single peroxy carbonates, 1 part of iso-cyanuric acid triallyl ester, 0.2 part of Octabenzone to mix through mixer, as encapsulation glue-line raw material.
In mass fraction, the HDPE master batch that is 0.04g/10min by 100 parts of MI, (Iranian 7000F), add 2 parts of iso-cyanuric acid triallyl esters, 6 parts of rutile titanium dioxides (R-105 of Du Pont), 2 parts of vinyl three ('beta '-methoxy oxyethyl group) silane, 0.1 part of Octabenzone mixes through mixer, as barrier film starting material.By barrier film raw material drawn, traction, rolling, make the barrier films that thickness is about 0.03mm.
Control temperature at 80～90 degrees Celsius, encapsulation glue-line is extruded, drawn, traction, compound with barrier film, make back side packaging adhesive film whole.
Side to light packaging plastic integral body is selected Foster F806 transparent EVA glued membrane.
Whole and the back side packaging plastic integral body of the side to light packaging plastic of usining as meeting light, shady face packaging plastic carries out laminating packaging, size of components 45 * 45cm.
Embodiment 6
A solar battery sheet packaging plastic structure, comprises near one deck barrier film of cell piece one side, near the encapsulation glue-line of backboard or glass one side.Barrier film is combined with each other with encapsulation glue-line, the mobility of described barrier film is less than encapsulation glue-line, encapsulation glue-line adopts Korea S SKC white EVA EF2W, and the one-piece construction that the white EVA EF2W of this barrier film and the Korea S SKC packaging adhesive film of usining forms is whole as shady face packaging plastic.Foster EVA F806 is whole as side to light packaging plastic.
Preparation:
Select Korea S SKC EF2W white EVA as encapsulation glue-line.The about 0.4mm of this packaging plastic thickness, white EVA and the transparent EVA identical for thickness are composited.
In mass fraction, by 100 parts of Celanese 2803G EVA master batches, as barrier film raw material.By barrier film raw material drawn, traction, rolling, make the barrier film that thickness is about 0.03mm.
Barrier film by cooling roller, is cooled to 80 degrees Celsius of left and right by its temperature, will encapsulate glue-line with barrier film hot pressing is compound, encapsulation glue-line is white simultaneously towards barrier film.Making body material is the back side packaging plastic integral body of EVA.
Side to light packaging plastic integral body is selected Foster F806 transparent EVA glued membrane.
Whole and the back side packaging plastic of the side to light packaging plastic of usining whole as meeting light, shady face EVA carries out laminating packaging, evaluation outward appearance, size of components 45 * 45cm.
Embodiment 7
A solar battery sheet packaging plastic structure, comprises near one deck barrier film of cell piece one side, near the encapsulation glue-line of backboard or glass one side.Barrier film is combined with each other with encapsulation glue-line, and the mobility of described barrier film is less than encapsulation glue-line, and encapsulation glue-line selects Foster F806 transparent EVA glued membrane.The packaging plastic one-piece construction that this barrier film and Foster EVA glued membrane be combined into of usining is whole as side to light packaging plastic, and EVA is used in conjunction with as back side packaging adhesive film with Korea S SKC EF2W white.
Preparation:
Select Foster F806 transparent EVA glued membrane to encapsulate glue-line as side to light.
In mass fraction, by 100 parts of vinyl acetate contents, be 33wt%, MI is the EVA master batch of 4g/10min (ISO1133), add 1.8 parts of Viscoat 295s, 2 parts of γ-aminopropyl triethoxysilanes (silane resin acceptor kh-550), 0.2 part of hindered amine as light stabilizer, through batch mixing, mix, as barrier film raw material.By barrier film raw material drawn, traction, rolling, make the barrier film that thickness is about 0.03mm.
Barrier film, by cooling roller, is cooled to 80 degrees Celsius of left and right by its temperature, and compound with the hot pressing of side to light encapsulation glue-line (Foster F806 transparent EVA glued membrane), making body material is the side to light packaging plastic integral body of EVA.
Select Korea S SKC EF2W white EVA whole as back side encapsulation glue-line, its white one side is towards cell piece.
Whole and the back side packaging plastic of the side to light packaging plastic of usining whole as meeting light, shady face EVA carries out laminating packaging, barrier film face is towards cell piece, size of components 45 * 45cm, evaluation outward appearance.
Embodiment 8
A solar battery sheet packaging plastic structure, comprises one deck encapsulation glue-line, one deck barrier film layer successively.Barrier film is combined with each other with encapsulation glue-line, the mobility of described barrier film is less than encapsulation glue-line, encapsulation glue-line adopts white EVA, the integral body that this barrier film and packaging plastic form of usining is whole as back side packaging plastic, side to light packaging plastic is selected the transparent EVA glued membrane on market, as Foster F806.During lamination, barrier film face is near cell piece.
Preparation:
In mass fraction, by 100 parts of vinyl acetate contents, be 32wt%, MI is the EVA pellet of 40g/10min, add 6 parts of rutile titanium dioxides (R-105 of Du Pont), 0.5 part of γ-methacryloxypropyl trimethoxy silane, the 1.6 parts of tertiary butyl-(2-ethylhexyl) single peroxy carbonates, 1 part of iso-cyanuric acid triallyl ester, 0.2 part of Octabenzone to mix through mixer, as encapsulation glue-line raw material.
In mass fraction, by 100 parts of vinyl acetate contents, be 22wt%, MI is the EVA master batch of 20g/10min (Samsung E220L EVA), add 1.8 parts of Viscoat 295s, 6 parts of rutile titanium dioxides (selecting the R105 of Du Pont), 2 parts of γ-methacryloxypropyl trimethoxy silane, 0.1 part of Octabenzone (UV absorption agent, UV531) through batch mixing, mix, as barrier film raw material.By barrier film raw material drawn, traction, rolling, make the barrier film that thickness is about 0.1mm.
Control temperature at 80～90 degrees Celsius, encapsulation glue-line raw material extruded, drawn, traction, and with barrier film pressing, making body material is the back side packaging plastic integral body of EVA.
Side to light packaging plastic integral body is selected Foster F806 transparent EVA glued membrane.
Successively by photovoltaic glass, side to light packaging plastic integral body, cell piece, back side packaging plastic is whole, backboard lamination, and carry out lamination, size of components 45 * 45cm, evaluates outward appearance.
Embodiment 9
A solar cell back face packaging plastic structure, comprises one deck encapsulation glue-line, one deck barrier film layer successively.Barrier film is combined with each other with encapsulation glue-line, encapsulates glue-line near cell piece during lamination, and barrier film layer is near backboard side.The mobility of described barrier film is less than encapsulation glue-line, and encapsulation glue-line adopts EVA, and the integral body that this barrier film and packaging plastic form of usining is whole as back side packaging plastic.
Preparation:
Select the double-deck white EVA of SKC EF2W as encapsulation glue-line.
Select Foster F806 as bond layer.
In mass fraction, by 100 parts of vinyl acetate contents, be 26wt%, MI is the EVA master batch of 8g/10min (Samsung EL-E260F), add 1.8 parts of Viscoat 295s, 6 parts of rutile titanium dioxides (selecting the R105 of Du Pont), 2 parts of γ-methacryloxypropyl trimethoxy silane, 0.1 part of Octabenzone, through batch mixing, mix, as barrier film raw material.By barrier film raw material through extruding, stretch, traction, rolling, make the barrier film that thickness is about 0.02mm.
Barrier film by cooling roller, is cooled to 80 degrees Celsius of left and right by its temperature, will encapsulate glue-line (white face is towards barrier film) and barrier film, bond layer hot pressing is compound, making body material is the back side packaging plastic integral body of EVA.
Side to light packaging plastic integral body is selected Foster F806 transparent EVA glued membrane.
Successively by photovoltaic glass, side to light packaging plastic integral body, cell piece, back side packaging plastic whole (bond layer is towards cell piece), backboard lamination, and carry out lamination, size of components 45 * 45cm, evaluates outward appearance.
Comparative example 1
A solar battery sheet packaging plastic structure, side to light packaging plastic is selected the transparent EVA glued membrane on market, as Foster F806.Shady face packaging plastic is white.
Preparation:
In mass fraction, by 100 parts of vinyl acetate contents, be 32wt%, MI is the EVA pellet of 40g/10min, add 6 parts of rutile titanium dioxides (R-105 of Du Pont), 0.5 part of γ-methacryloxypropyl trimethoxy silane, the 1.5 parts of tertiary butyl-(2-ethylhexyl) single peroxy carbonates, 1 part of iso-cyanuric acid triallyl ester, 0.2 part of Octabenzone to mix through mixer, as shady face encapsulation glue-line raw material.At 80～90 degrees Celsius, will encapsulate glue-line raw material, through extruding, stretch, drawing, making body material is the white back packaging plastic integral body of EVA.
Side to light packaging plastic integral body is selected Foster F806 transparent EVA glued membrane.
Successively by photovoltaic glass, side to light packaging plastic integral body, cell piece, back side packaging plastic is whole, backboard lamination, and carry out lamination, size of components 45 * 45cm, evaluates outward appearance.
Performance test:
1, with the stripping strength of glass
According to ASTM D903 experimental technique, the packaging plastic with barrier film in test the utility model is whole, the stripping strength of barrier film face and glass.
2, outward appearance
According to the lamination of general establishment of component, laminating method,
145 ℃ of laminating temperatures, the pumpdown time is 5 minutes, makes solar module 14 minutes set times, observes outward appearance.All embodiment, comparative example take same lamination to carry out lamination, size of components 45 * 45cm, relatively outward appearance.
3, degree of crosslinking
Test package glue degree of crosslinking after lamination, adopts DSC method test degree of crosslinking.
Test philosophy: when packaging plastic is cross-linked, emit heat.With DSC instrument, record respectively uncrosslinked and crosslinked rear packaging plastic liberated heat (solidifying enthalpy) when heating, then calculate the degree of crosslinking after being cross-linked, calculation formula is as follows: Gel Content%=(after uncrosslinked curing enthalpy one is crosslinked, residue is solidified enthalpy)/uncrosslinked curing enthalpy.
Testing method: first uncrosslinked packaging plastic is put into DSC instrument, be raised to 230 ℃ from room temperature, arrive 230 ℃ of insulation 5min, obtain uncrosslinked curing enthalpy.Select test condition: 10 ℃/rain of temperature rise rate, sweeping gas N2, flow 30ml/min.The packaging plastic of choosing after equal quality is cross-linked is tested under same test condition, obtains crosslinked rear residue and solidifies enthalpy.With above-mentioned formula, calculate, can obtain the degree of crosslinking of crosslinked rear packaging plastic.
The performance test results:
Claims (7)
1. a solar battery sheet packaging plastic structure, it is characterized in that, comprise encapsulation glue-line and one deck barrier film layer at least, or comprise encapsulation glue-line, at least one deck barrier film, be distributed in barrier film near at least one deck bond layer of cell piece one side, barrier film is combined with each other with encapsulation glue-line or barrier film is combined with each other with encapsulation glue-line and bond layer, and the mobility of described barrier film is less than the mobility that encapsulates glue-line.
2. solar battery sheet packaging plastic structure according to claim 1, is characterized in that, described barrier film is with punching or embossing.
3. solar battery sheet packaging plastic structure according to claim 1, is characterized in that, the mobility of described barrier film is all less than the mobility of encapsulation glue-line in 80～150 ℃.
4. solar battery sheet packaging plastic structure according to claim 1, is characterized in that, the mobility of barrier film characterizes with melting index, is all less than 20g/10min between 80～150 ℃.
5. solar battery sheet packaging plastic structure according to claim 1, is characterized in that, the thickness of described barrier film is between 0.0001mm～1mm.
6. solar battery sheet packaging plastic structure according to claim 5, is characterized in that, the thickness of described barrier film is between 0.001mm～0.5mm.
7. solar battery sheet packaging plastic structure according to claim 1, is characterized in that, described encapsulation glue-line selects white EVA layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420127846.7U CN203807378U (en) | 2014-03-20 | 2014-03-20 | Solar cell encapsulating adhesive structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420127846.7U CN203807378U (en) | 2014-03-20 | 2014-03-20 | Solar cell encapsulating adhesive structure |
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| CN203807378U true CN203807378U (en) | 2014-09-03 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103865420A (en) * | 2014-03-20 | 2014-06-18 | 仇桂芬 | Solar battery piece packaging glue structure and preparation method thereof |
| CN104966743A (en) * | 2015-07-21 | 2015-10-07 | 宁波华顺太阳能科技有限公司 | Anti-PID (potential Induced Degradation) photovoltaic module |
| CN112321933A (en) * | 2020-11-05 | 2021-02-05 | 苏州赛伍应用技术股份有限公司 | Heat-conducting packaging adhesive film and preparation method and application thereof |
-
2014
- 2014-03-20 CN CN201420127846.7U patent/CN203807378U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103865420A (en) * | 2014-03-20 | 2014-06-18 | 仇桂芬 | Solar battery piece packaging glue structure and preparation method thereof |
| CN103865420B (en) * | 2014-03-20 | 2016-07-13 | 仇桂芬 | A kind of solar battery sheet packaging plastic structure and preparation method thereof |
| CN104966743A (en) * | 2015-07-21 | 2015-10-07 | 宁波华顺太阳能科技有限公司 | Anti-PID (potential Induced Degradation) photovoltaic module |
| CN112321933A (en) * | 2020-11-05 | 2021-02-05 | 苏州赛伍应用技术股份有限公司 | Heat-conducting packaging adhesive film and preparation method and application thereof |
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