CN105047744A - Manufacturing method of solar photovoltaic assembly - Google Patents
Manufacturing method of solar photovoltaic assembly Download PDFInfo
- Publication number
- CN105047744A CN105047744A CN201510524596.XA CN201510524596A CN105047744A CN 105047744 A CN105047744 A CN 105047744A CN 201510524596 A CN201510524596 A CN 201510524596A CN 105047744 A CN105047744 A CN 105047744A
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- glass substrate
- line
- glue
- polytetrafluoroethylene ring
- photovoltaic assembly
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- 238000004519 manufacturing process Methods 0.000 title abstract description 6
- 239000011521 glass Substances 0.000 claims abstract description 190
- 239000000758 substrate Substances 0.000 claims abstract description 187
- -1 polytetrafluoroethylene ring Polymers 0.000 claims abstract description 153
- 238000007731 hot pressing Methods 0.000 claims abstract description 36
- 239000003292 glue Substances 0.000 claims abstract description 31
- 239000011265 semifinished product Substances 0.000 claims abstract description 27
- 238000005538 encapsulation Methods 0.000 claims description 138
- 238000002360 preparation method Methods 0.000 claims description 30
- 238000007711 solidification Methods 0.000 claims description 29
- 230000008023 solidification Effects 0.000 claims description 29
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 16
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 16
- 230000015572 biosynthetic process Effects 0.000 claims description 13
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 11
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 11
- 229920005549 butyl rubber Polymers 0.000 claims description 10
- 238000004806 packaging method and process Methods 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 7
- 238000003475 lamination Methods 0.000 abstract description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 10
- 230000000694 effects Effects 0.000 description 8
- 238000012360 testing method Methods 0.000 description 8
- 241000168254 Siro Species 0.000 description 6
- 238000009987 spinning Methods 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 4
- 239000000377 silicon dioxide Substances 0.000 description 4
- 235000012239 silicon dioxide Nutrition 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 238000005496 tempering Methods 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical group O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 239000003513 alkali Substances 0.000 description 1
- 230000001458 anti-acid effect Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/048—Encapsulation of modules
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/048—Encapsulation of modules
- H01L31/0481—Encapsulation of modules characterised by the composition of the encapsulation material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/048—Encapsulation of modules
- H01L31/0488—Double glass encapsulation, e.g. photovoltaic cells arranged between front and rear glass sheets
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
-
- 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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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Photovoltaic Devices (AREA)
- Manufacturing & Machinery (AREA)
Abstract
The invention relates to a manufacturing method of a solar photovoltaic assembly. The manufacturing method comprises the following steps that a polytetrafluoroethylene ring is arranged on one surface of a first glass substrate; a first packaging glue layer is laminate on the first glass substrate; a solar cell sheet is laid on a central section of the first packaging glue layer, and a sum of thicknesses of the solar cell sheet and the first packaging glue layer is less than a height of the polytetrafluoroethylene ring; a second packaging glue layer is laminated on the solar cell sheet and a sum of thicknesses of the second packaging glue layer, the solar cell sheet and the first packaging glue layer is greater than the height of the polytetrafluoroethylene ring; a second glass substrate is laminated on the second packaging glue layer so as to obtain a semi-finished product; hot pressing is performed on the semi-finished product and a packaging layer is accommodated in the polytetrafluoroethylene ring so as to obtain a lamination component; the polytetrafluoroethylene ring is removed, a curing glue is filled in and the solar photovoltaic assembly is obtained through curing. By using the above method, a condition that micro bubbles are generated on an edge of the solar photovoltaic assembly can be avoided and the solar photovoltaic assembly possesses good reliability.
Description
Technical field
The present invention relates to field of solar energy, particularly a kind of preparation method of solar photovoltaic assembly.
Background technology
At present two glass photovoltaic module technology is entering develop rapidly period, and people have promoted the continuous progress of two glass component technology to the transformation efficiency of photovoltaic module and the dual requirements of reliability.But current two glass assemblies owing to there is wall and corner effect, can cause the corner of photovoltaic module to occur micro-bubble in lamination process, cause the rate of finished products of photovoltaic module low, are difficult to the problem of mass production; In addition, current photovoltaic module is easily permeable, causes the internal circuit of photovoltaic module to have the risk be corroded, affects the reliability of photovoltaic module.
Summary of the invention
Based on this, be necessary the preparation method providing a kind of solar photovoltaic assembly, this preparation method can avoid the edge of solar photovoltaic assembly to occur micro-bubble and solar photovoltaic assembly can be made to have good reliability.
A preparation method for solar photovoltaic assembly, comprises the steps:
A surface of the first glass substrate arranges polytetrafluoroethylene ring, jointly coordinates formation one host cavity to make described first glass substrate and described polytetrafluoroethylene ring;
Stacked first encapsulation glue-line on described first glass substrate, and described first encapsulation glue-line is contained in described polytetrafluoroethylene ring;
Lay solar battery sheet at the middle part of described first encapsulation glue-line, and described solar battery sheet is contained in described polytetrafluoroethylene ring, and the thickness sum that described solar battery sheet and described first encapsulates glue-line is less than the height of described polytetrafluoroethylene ring;
Stacked second encapsulation glue-line on described solar battery sheet, and making described solar battery sheet be positioned at the middle part of described second encapsulation glue-line, the thickness sum of described second encapsulation glue-line, described solar battery sheet and described first encapsulation glue-line is greater than the height of described polytetrafluoroethylene ring;
At described second folded second glass substrate in encapsulation glue-line upper strata, obtain semi-finished product;
By described semi-finished product hot pressing, move towards near the direction of described first glass substrate to make described second glass substrate, and make described first encapsulation glue-line and described second encapsulate glue-line deforming contact, and cross-linked polymeric occurs and forms the encapsulated layer with the containing cavity of accommodating described solar battery sheet, until described second glass substrate and described polytetrafluoroethylene ring offset away from one end of described first glass substrate, described polytetrafluoroethylene ring stops described second glass substrate to continue to move towards near the direction of described first glass substrate, described encapsulated layer is contained in described polytetrafluoroethylene ring, obtain laminate, and
Remove described polytetrafluoroethylene ring, and the groove formed between described first glass substrate and described second glass substrate around described encapsulated layer, solidification glue is filled in described groove, through solidification, described solidification glue, described first glass substrate and described second glass substrate coordinate the described encapsulated layer of collecting jointly, obtain solar photovoltaic assembly.
Wherein in an embodiment, the step that a surface of described first glass substrate arranges described polytetrafluoroethylene ring is specially: within one week, arrange polytetrafluoroethylene bar at one of described first glass substrate surperficial edge, and described polytetrafluoroethylene bar is joined end to end ring body that formation one closes.
Wherein in an embodiment, the outer surface of described polytetrafluoroethylene ring is concordant with the side of described first glass substrate.
Wherein in an embodiment, temperature during described semi-finished product hot pressing is 135 ~ 145 DEG C.
Wherein in an embodiment, the step of described semi-finished product hot pressing is carried out under vacuum, and vacuum degree is below-0.015MPa.
Wherein in an embodiment, pressure during described semi-finished product hot pressing is 0.03 ~ 0.05MPa, and hot pressing time is 5 ~ 15 minutes.
Wherein in an embodiment, the thickness of described first encapsulation glue-line is 0.4 ~ 0.8 millimeter, the thickness of described second encapsulation glue-line is 0.4 ~ 0.8 millimeter, and the thickness of described solar battery sheet is 190 ~ 210 microns, and the height of described polytetrafluoroethylene ring is 0.5 ~ 1.5 millimeter.
Wherein in an embodiment, described solidification glue is butyl rubber.
Wherein in an embodiment, the material of described first encapsulation glue-line and described second encapsulation glue-line is uncrosslinked ethylene-vinyl acetate copolymer.
Wherein in an embodiment, the shape of figure that the described first encapsulation shape of glue-line and the inner surface of size and described polytetrafluoroethylene ring surround and in the same size, described second encapsulates the shape of the figure that the shape of glue-line and the inner surface of size and described polytetrafluoroethylene ring surround and in the same size.
The preparation method of above-mentioned solar photovoltaic assembly is simple to operate, is easy to suitability for industrialized production.And the preparation method of above-mentioned solar photovoltaic assembly arranged polytetrafluoroethylene ring before formation first encapsulates glue-line on the first glass substrate, and make the first encapsulation glue-line be housed in polytetrafluoroethylene ring, and the second packaging plastic layer is laminated on the first encapsulation glue-line, after hot pressing, first encapsulation glue-line and second encapsulates glue-line and forms the encapsulated layer with the containing cavity of accommodating solar battery sheet, and this encapsulated layer is contained in host cavity, when removing polytetrafluoroethylene ring, formed around the encapsulated layer groove of a week between first glass substrate and the second glass substrate, solidification glue is injected in this groove, make solidification glue around encapsulated layer one week, after solidification, solidification glue wraps encapsulated layer well, and solidify glue and the first glass substrate and the equal compact siro spinning technology of the second glass substrate, i.e. the first glass substrate, second glass substrate and polytetrafluoroethylene ring coordinate collecting encapsulated layer jointly, thus protect inner solar battery sheet well, prevent steam from entering into solar photovoltaic assembly, above-mentioned solar photovoltaic assembly is made to have good reliability, simultaneously, before encapsulating glue-line in formation first, polytetrafluoroethylene ring is set on the first glass substrate, and make the first encapsulation glue-line be housed in polytetrafluoroethylene ring, solar battery sheet is laid at the middle part of the first encapsulation glue-line, stacked second encapsulation glue-line on solar battery sheet, solar battery sheet is also arranged in the second encapsulated layer, and the second encapsulation glue-line, the thickness sum of solar battery sheet and the first encapsulation glue-line is greater than the height of polytetrafluoroethylene ring, in hot pressing, second glass substrate moves towards near the direction of the first glass substrate, first encapsulation glue-line and the second encapsulation glue-line are owing to being subject to the effect of hot pressing, also there is cross-linked polymeric in deforming contact, when the second glass substrate and polytetrafluoroethylene ring offset away from one end of the first glass substrate, due to the barrier effect of polytetrafluoroethylene ring, the second glass substrate is stoped to continue to move towards near the direction of the first glass substrate, the encapsulated layer that the first encapsulation glue-line and the second encapsulation glue-line can not only be made to be formed is housed in polytetrafluoroethylene ring, the first encapsulation glue-line and the second encapsulation glue-line uniform force can also be made, prevent the edge of encapsulated layer from occurring micro-bubble, thus the half-finished edge discontinuity avoiding direct hot pressing to cause and the edge of encapsulated layer that causes produce the problem of micro-bubble.
Accompanying drawing explanation
Fig. 1 is the flow chart of the preparation method of the solar photovoltaic assembly of an execution mode;
The structural representation of the first glass substrate of polytetrafluoroethylene ring is provided with in the step S110 of Fig. 2 for the preparation method of the solar photovoltaic assembly shown in Fig. 1;
Half-finished exploded view in the step S150 that Fig. 3 is the preparation method of the solar photovoltaic assembly shown in Fig. 1;
The structural representation of solar photovoltaic assembly prepared by the preparation method that Fig. 4 is the solar photovoltaic assembly shown in Fig. 1;
Fig. 5 is the profile of the solar photovoltaic assembly shown in Fig. 4.
Embodiment
For the ease of understanding the present invention, below with reference to relevant drawings, the present invention is described more fully.Preferred embodiment of the present invention is given in accompanying drawing.But the present invention can realize in many different forms, is not limited to embodiment described herein.On the contrary, provide the object of these embodiments be make the understanding of disclosure of the present invention more comprehensively thorough.
It should be noted that, when element is called as " being fixed on " another element, directly can there is element placed in the middle in it on another element or also.When an element is considered to " connection " another element, it can be directly connected to another element or may there is centering elements simultaneously.Term as used herein " vertical ", " level ", "left", "right" and similar statement are just for illustrative purposes.
Unless otherwise defined, all technology used herein and scientific terminology are identical with belonging to the implication that those skilled in the art of the present invention understand usually.The object of term used in the description of the invention herein just in order to describe specific embodiment, is not intended to be restriction the present invention.Term as used herein " and/or " comprise arbitrary and all combinations of one or more relevant Listed Items.
As shown in Figure 1, the preparation method of the solar photovoltaic assembly of an execution mode, comprises the steps:
Step S110: arrange polytetrafluoroethylene ring on a surface of the first glass substrate, coordinates formation one host cavity jointly to make the first glass substrate and polytetrafluoroethylene ring.
Wherein, the first glass substrate is armorplate glass.The thickness of the first glass substrate is 1 millimeter ~ 5 millimeters.
Concrete, the step that a surface of the first glass substrate arranges polytetrafluoroethylene ring is specially: within one week, arrange polytetrafluoroethylene bar at one of the first glass substrate surperficial edge, and polytetrafluoroethylene bar is joined end to end ring body that formation one closes.More specifically, polytetrafluoroethylene ring is formed after being joined end to end by multiple polytetrafluoroethylene bar.By forming polytetrafluoroethylene ring with polytetrafluoroethylene bar, be conducive to the removal of follow-up polytetrafluoroethylene ring.
Wherein, polytetrafluoroethylene has the feature of antiacid alkali resistant, anti-various organic solvent, is dissolved in all solvents hardly.Meanwhile, polytetrafluoroethylene has resistant to elevated temperatures feature, and has good lubrification and non-adhesiveness, is conducive to the removal of polytetrafluoroethylene ring in subsequent step.
Further, the outer surface of polytetrafluoroethylene ring is concordant with the side of the first glass substrate.And the thickness of the sidewall of polytetrafluoroethylene ring is 5 ~ 30 millimeters.
Further, the height of polytetrafluoroethylene ring is 0.5 ~ 1.5 millimeter.
As shown in Figure 2, the first glass substrate 210 in illustrated embodiment is provided with polytetrafluoroethylene ring 300, and polytetrafluoroethylene ring 300 and the first glass substrate 210 jointly coordinate and form host cavity 400.Wherein, the first glass substrate 210 is square tabular.Polytetrafluoroethylene ring 300 is formed after being joined end to end by four polytetrafluoroethylene bars.
Further, before a surface of the first glass substrate arranges the step of polytetrafluoroethylene ring, be also included in the step the first glass substrate being formed anti-reflection film, polytetrafluoroethylene ring is arranged on the first glass substrate away from a surface of anti-reflection film.Wherein, anti-reflection film is titanium dioxide film or silicon dioxide film.And the thickness of anti-reflection film is 90 ~ 110 nanometers.
Step S120: stacked first encapsulation glue-line on the first glass substrate, and the first encapsulation glue-line is contained in polytetrafluoroethylene ring.
Wherein, the material of the first encapsulation glue-line is uncrosslinked ethylene-vinyl acetate copolymer.The thickness of the first encapsulated layer is 0.4 ~ 0.8 millimeter.
Concrete, the first encapsulation shape of glue-line and the inner surface of polytetrafluoroethylene ring to surround the shape of figure consistent.Wherein, the distance between the first encapsulation glue-line and the inner surface of polytetrafluoroethylene ring is below 4 millimeters.Preferably, first encapsulation the size of glue-line and the inner surface of polytetrafluoroethylene ring surround the in the same size of figure.
Step S130: lay solar battery sheet at the middle part of the first encapsulation glue-line, and solar battery sheet is contained in polytetrafluoroethylene ring, the thickness sum that solar battery sheet and first encapsulates glue-line is less than the height of polytetrafluoroethylene ring.
Wherein, solar battery sheet is multiple, and the series connection of multiple solar battery sheet.Multiple solar battery sheet is laid on the first encapsulation glue-line successively.Be appreciated that number and the annexation that can adjust solar battery sheet as required.
Wherein, the thickness of solar battery sheet is 190 ~ 210 microns.
Step S140: stacked second encapsulation glue-line on solar battery sheet, and make solar battery sheet be positioned at the middle part of the second encapsulation glue-line, the thickness sum of the second encapsulation glue-line, solar battery sheet and the first encapsulation glue-line is greater than the height of polytetrafluoroethylene ring.
The height of polytetrafluoroethylene ring is less than by the thickness sum making solar battery sheet and first encapsulate glue-line, the thickness sum of the second encapsulation glue-line, solar battery sheet and the first encapsulation glue-line is greater than the height of polytetrafluoroethylene ring, is contained in polytetrafluoroethylene ring to make the second packaging plastic layer segment.
Concrete, the second encapsulation shape of glue-line and the inner surface of polytetrafluoroethylene ring to surround the shape of figure consistent.Wherein, the distance between the second encapsulation glue-line and the inner surface of polytetrafluoroethylene ring is below 4 millimeters.Preferably, second encapsulation the size of glue-line and the inner surface of polytetrafluoroethylene ring surround the in the same size of figure.
Concrete, the thickness of the second encapsulation glue-line is 0.4 ~ 0.8 millimeter.
Step S150: at the second folded second glass substrate in encapsulation glue-line upper strata, obtain semi-finished product.
Now, the second glass substrate not with polytetrafluoroethylene loop contacts.
Wherein, the second glass substrate is armorplate glass.The thickness of the second glass substrate is 1 ~ 5 millimeter.Concrete, the size of the second glass substrate and the equal and opposite in direction of the first glass substrate.
As shown in Figure 3, Fig. 3 is half-finished exploded view, first glass substrate 210 is provided with polytetrafluoroethylene ring 300, and the first encapsulation glue-line 220, solar battery sheet 230, second encapsulation glue-line 240 and the second glass substrate 250 stack gradually on the first glass substrate 210.And the surface of the second glass substrate 250 away from the second encapsulation glue-line 240 is formed with anti-reflection film 260.
Step S160: by semi-finished product hot pressing, move towards near the direction of the first glass substrate to make the second glass substrate, and make the first encapsulation glue-line and second encapsulate glue-line deforming contact, and cross-linked polymeric occurs and forms the encapsulated layer with the containing cavity of accommodating solar battery sheet, until the second glass substrate and polytetrafluoroethylene ring offset away from one end of the first glass substrate, polytetrafluoroethylene ring stops the second glass substrate to continue to move towards near the direction of the first glass substrate, and make encapsulated layer be contained in polytetrafluoroethylene ring, obtain laminate.
In semi-finished product hot pressing, second glass substrate moves towards near the direction of the first glass substrate, first encapsulation glue-line and the second encapsulation glue-line are owing to being subject to the effect of hot pressing, deforming contact, and there is cross-linked polymeric, when the second glass substrate and polytetrafluoroethylene ring abut against away from one end of the first glass substrate, due to the barrier effect of polytetrafluoroethylene ring, the second glass substrate is stoped to continue to move towards near the direction of the first glass substrate, the encapsulated layer that the first encapsulation glue-line and the second encapsulation glue-line can not only be made to be formed is housed in polytetrafluoroethylene ring, the first encapsulation glue-line and the second encapsulation glue-line uniform force can also be made, prevent the edge of encapsulated layer from occurring micro-bubble.
Semi-finished product are after hot pressing, and the second glass substrate and polytetrafluoroethylene ring away from the contact of one end of the first glass substrate, and cover the opening of polytetrafluoroethylene ring away from one end of the first glass substrate.And two relative surfaces of encapsulated layer are bonded together closely with the first glass substrate and the second glass substrate respectively.
Wherein, temperature during semi-finished product hot pressing is 135 ~ 145 DEG C.
Wherein, the step of semi-finished product hot pressing is carried out under vacuum, and vacuum degree is below-0.015MPa.
Wherein, pressure during semi-finished product hot pressing is 0.03 ~ 0.05MPa, and hot pressing time is 5 ~ 15 minutes.
Step S170: remove polytetrafluoroethylene ring, and the groove formed between the first glass substrate and the second glass substrate around encapsulated layer, solidification glue is filled in groove, through solidification, solidification glue, the first glass substrate and the second glass substrate coordinate collecting encapsulated layer jointly, obtain solar photovoltaic assembly.
Wherein, solidification glue can be silica gel, butyl rubber etc., is preferably butyl rubber.
See also Figure 4 and 5, illustrated embodiment is a kind of solar photovoltaic assembly 10 obtained adopting the preparation method of above-mentioned solar photovoltaic assembly to prepare, and encapsulated layer 270 and the second glass substrate 250 stack gradually on the first glass substrate 210; Solidification glue 280 was around encapsulated layer 270 1 weeks, and solidification glue 280 accommodates encapsulated layer 270 with the first glass substrate 210 and the second glass substrate 250 all compact siro spinning technology, solidification glue 280, first glass substrate 210 and the common cooperation of the second glass substrate 250.Encapsulated layer 270 has the host cavity 272 of collecting solar battery sheet 230.
The preparation method of above-mentioned solar photovoltaic assembly is simple to operate, is easy to suitability for industrialized production.And the preparation method of above-mentioned solar photovoltaic assembly arranged polytetrafluoroethylene ring before formation first encapsulates glue-line on the first glass substrate, and make the first encapsulation glue-line be housed in polytetrafluoroethylene ring, and the second packaging plastic layer is laminated on the first encapsulation glue-line, after hot pressing, first encapsulation glue-line and second encapsulates glue-line and forms the encapsulated layer with the containing cavity of accommodating solar battery sheet, and this encapsulated layer is contained in host cavity, when removing polytetrafluoroethylene ring, formed around the encapsulated layer groove of a week between first glass substrate and the second glass substrate, solidification glue is injected in this groove, make solidification glue around encapsulated layer one week, after solidification, solidification glue wraps encapsulated layer well, and solidify glue and the first glass substrate and the equal compact siro spinning technology of the second glass substrate, i.e. the first glass substrate, second glass substrate and polytetrafluoroethylene ring coordinate collecting encapsulated layer jointly, thus protect inner solar battery sheet well, prevent steam from entering into solar photovoltaic assembly, above-mentioned solar photovoltaic assembly is made to have good reliability, simultaneously, before encapsulating glue-line in formation first, polytetrafluoroethylene ring is set on the first glass substrate, and make the first encapsulation glue-line be housed in polytetrafluoroethylene ring, solar battery sheet is laid at the middle part of the first encapsulation glue-line, stacked second encapsulation glue-line on solar battery sheet, solar battery sheet is also arranged in the second encapsulated layer, and the second encapsulation glue-line, the thickness sum of solar battery sheet and the first encapsulation glue-line is greater than the height of polytetrafluoroethylene ring, in hot pressing, second glass substrate moves towards near the direction of the first glass substrate, first encapsulation glue-line and the second encapsulation glue-line are owing to being subject to the effect of hot pressing, also there is cross-linked polymeric in deforming contact, when the second glass substrate and polytetrafluoroethylene ring offset away from one end of the first glass substrate, due to the barrier effect of polytetrafluoroethylene ring, the second glass substrate is stoped to continue to move towards near the direction of the first glass substrate, the encapsulated layer that the first encapsulation glue-line and the second encapsulation glue-line can not only be made to be formed is housed in polytetrafluoroethylene ring, the first encapsulation glue-line and the second encapsulation glue-line uniform force can also be made, prevent the edge of encapsulated layer from occurring micro-bubble, thus the half-finished edge discontinuity avoiding direct hot pressing to cause and the edge of encapsulated layer that causes produce the problem of micro-bubble.
Be below specific embodiment part:
Embodiment 1
The preparation process of the solar photovoltaic assembly of the present embodiment is as follows:
(1) at thickness be 3 millimeters the first glass substrate a surface on form the antireflecting silicon dioxide film that thickness is 100 nanometers, at the edge on another surface of the first glass substrate, within one week, polytetrafluoroethylene bar is set, form the polytetrafluoroethylene ring closed, and this polytetrafluoroethylene ring and the first glass substrate coordinate formation one host cavity jointly.Wherein, the height of polytetrafluoroethylene ring is 1 millimeter, and the thickness of the sidewall of polytetrafluoroethylene ring is 20 millimeters, and the first glass substrate is tempering substrate.
(2) stacked first encapsulation glue-line on the first glass substrate, and the first encapsulation glue-line is contained in polytetrafluoroethylene ring.Wherein, the material of the first encapsulation glue-line is uncrosslinked ethylene-vinyl acetate copolymer, the thickness of the first encapsulation glue-line is 0.6 millimeter, the first encapsulation shape of glue-line is consistent with the shape of the figure that the inner surface of polytetrafluoroethylene ring surrounds, and the distance between the first encapsulation glue-line and the inner surface of polytetrafluoroethylene ring is below 4 millimeters.
(3) lay solar battery sheet at the middle part of the first encapsulation glue-line, solar battery sheet is contained in polytetrafluoroethylene ring.And the thickness of solar battery sheet is 200 microns.
(4) on solar battery sheet, stacked thickness is the second encapsulation glue-line of 0.6 millimeter, and make solar battery sheet be positioned at the middle part of the second encapsulation glue-line, the second encapsulation shape of glue-line is consistent with the shape of the figure that the inner surface of polytetrafluoroethylene ring surrounds, and the distance between the second encapsulation glue-line and the inner surface of polytetrafluoroethylene ring is below 4 millimeters.Wherein, the material of the second encapsulation glue-line is uncrosslinked ethylene-vinyl acetate copolymer.
(5) at the second folded second glass substrate in encapsulation glue-line upper strata, semi-finished product are obtained.Wherein, the second glass substrate is armorplate glass, and the thickness of the second glass substrate is 3 millimeters.
(6) in vacuum degree be-0.015MPa condition under, by semi-finished product in 140 DEG C of hot pressing 1 minute, pressure is 0.04MPa, in hot pressing, second glass substrate moves towards near the direction of the first glass substrate, and make the first encapsulation glue-line and second encapsulate glue-line deforming contact, and cross-linked polymeric occurs and forms the encapsulated layer with the containing cavity of accommodating solar battery sheet, until the second glass substrate and polytetrafluoroethylene ring offset away from one end of the first glass substrate, polytetrafluoroethylene ring stops the second glass substrate to continue to move towards near the direction of the first glass substrate, and make encapsulated layer be contained in polytetrafluoroethylene ring, obtain laminate.
(7) polytetrafluoroethylene ring is removed, and the groove formed between the first glass substrate and the second glass substrate around encapsulated layer, butyl rubber is filled in groove, through solidification, butyl rubber was around encapsulated layer one week, and butyl rubber and the first glass substrate and the equal compact siro spinning technology of second substrate, solidification glue, the first glass substrate and the second glass substrate coordinate collecting encapsulated layer jointly, obtain solar photovoltaic assembly.
The bubble situation of the encapsulated layer of laminate is obtained after observing the present embodiment hot pressing.
Adopt two 85 environmental test chamber tests by the permeable situation of the solar photovoltaic assembly of the present embodiment, test condition is temperature 85 DEG C, humidity 85%, 3000 hours testing times.When the preparation of solar photovoltaic assembly in process, solar battery sheet places a water-indicating paper, the two ends of water-indicating paper are clamped between the first encapsulation glue-line and the second encapsulation glue-line, width 10mm, after above-mentioned test environment has been tested, water-indicating paper discoloration just can react the permeable situation of solar photovoltaic assembly.
The permeable situation of the solar photovoltaic assembly of the present embodiment and the situation of bubble are in table 1.
Embodiment 2
The preparation process of the solar photovoltaic assembly of the present embodiment is as follows:
(1) at thickness be 1 millimeter the first glass substrate a surface on form the antireflecting silicon dioxide film that thickness is 90 nanometers, at the edge on another surface of the first glass substrate, within one week, polytetrafluoroethylene bar is set, form the polytetrafluoroethylene ring closed, and this polytetrafluoroethylene ring and the first glass substrate coordinate formation one host cavity jointly.Wherein, the height of polytetrafluoroethylene ring is 0.5 millimeter, and the thickness of the sidewall of polytetrafluoroethylene ring is 5 millimeters, and the first glass substrate is tempering substrate.
(2) stacked first encapsulation glue-line on the first glass substrate, and the first encapsulation glue-line is contained in polytetrafluoroethylene ring.Wherein, the material of the first encapsulation glue-line is uncrosslinked ethylene-vinyl acetate copolymer, the thickness of the first encapsulation glue-line is 0.4 millimeter, the first encapsulation shape of glue-line is consistent with the shape of the figure that the inner surface of polytetrafluoroethylene ring surrounds, and the distance between the first encapsulation glue-line and the inwall of polytetrafluoroethylene ring is below 4 millimeters.
(3) lay solar battery sheet at the middle part of the first encapsulation glue-line, solar battery sheet is contained in polytetrafluoroethylene ring.And the thickness of solar battery sheet is 190 microns.
(4) on solar battery sheet, stacked thickness is the second encapsulation glue-line of 0.4 millimeter, and make solar battery sheet be positioned at the middle part of the second encapsulation glue-line, the second encapsulation shape of glue-line is consistent with the shape of the figure that the inner surface of polytetrafluoroethylene ring surrounds, and the distance between the second encapsulation glue-line and the inner surface of polytetrafluoroethylene ring is below 4 millimeters.Wherein, the material of the second encapsulation glue-line is uncrosslinked ethylene-vinyl acetate copolymer.
(5) at the second folded second glass substrate in encapsulation glue-line upper strata, semi-finished product are obtained.Wherein, the second glass substrate is armorplate glass.The thickness of the second glass substrate is 1 millimeter.
(6) in vacuum degree be-0.030MPa condition under, by semi-finished product in 135 DEG C of hot pressing 15 minutes, pressure is 0.05MPa, in hot pressing, second glass substrate moves towards near the direction of the first glass substrate, and make the first encapsulation glue-line and second encapsulate glue-line deforming contact, and cross-linked polymeric occurs and forms the encapsulated layer with the containing cavity of accommodating solar battery sheet, until the second glass substrate and polytetrafluoroethylene ring offset away from one end of the first glass substrate, polytetrafluoroethylene ring stops the second glass substrate to continue to move towards near the direction of the first glass substrate, and make encapsulated layer be contained in polytetrafluoroethylene ring, obtain laminate.
(7) polytetrafluoroethylene ring is removed, and the groove formed between the first glass substrate and the second glass substrate around encapsulated layer, butyl rubber is filled in groove, through solidification, butyl rubber was around encapsulated layer one week, and butyl rubber and the first glass substrate and the equal compact siro spinning technology of second substrate, solidification glue, the first glass substrate and the second glass substrate coordinate collecting encapsulated layer jointly, obtain solar photovoltaic assembly.
Adopt the method for testing that embodiment 1 is identical, the situation of the permeable situation and bubble that obtain the solar photovoltaic assembly of the present embodiment is in table 1.
Embodiment 3
The preparation process of the solar photovoltaic assembly of the present embodiment is as follows:
(1) at thickness be 5 millimeters the first glass substrate a surface on form the antireflecting silicon dioxide film that thickness is 110 nanometers, at the edge on another surface of the first glass substrate, within one week, polytetrafluoroethylene bar is set, form the polytetrafluoroethylene ring closed, and this polytetrafluoroethylene ring and the first glass substrate coordinate formation one host cavity jointly.Wherein, the height of polytetrafluoroethylene ring is 1.5 millimeters, and the thickness of the sidewall of polytetrafluoroethylene ring is 30 millimeters, and the first glass substrate is tempering substrate.
(2) stacked first encapsulation glue-line on the first glass substrate, and the first encapsulation glue-line is contained in polytetrafluoroethylene ring.Wherein, the material of the first encapsulation glue-line is uncrosslinked ethylene-vinyl acetate copolymer, the thickness of the first encapsulation glue-line is 0.8 millimeter, the first encapsulation shape of glue-line is consistent with the shape of the figure that the inner surface of polytetrafluoroethylene ring surrounds, and the distance between the first encapsulation glue-line and the inner surface of polytetrafluoroethylene ring is below 4 millimeters.
(3) lay solar battery sheet at the middle part of the first encapsulation glue-line, solar battery sheet is contained in polytetrafluoroethylene ring.And the thickness of solar battery sheet is 210 microns.
(4) on solar battery sheet, stacked thickness is the second encapsulation glue-line of 0.8 millimeter, and make solar battery sheet be positioned at the middle part of the second encapsulation glue-line, the second encapsulation shape of glue-line is consistent with the shape of the figure that the inner surface of polytetrafluoroethylene ring surrounds, and the distance between the second encapsulation glue-line and the inner surface of polytetrafluoroethylene ring is below 4 millimeters.Wherein, the material of the second encapsulation glue-line is uncrosslinked ethylene-vinyl acetate copolymer.
(5) at the second folded second glass substrate in encapsulation glue-line upper strata, semi-finished product are obtained.Wherein, the second glass substrate is armorplate glass.The thickness of the second glass substrate is 5 millimeters.
(6) in vacuum degree be-0.020MPa condition under, by semi-finished product in 145 DEG C of hot pressing 5 minutes, pressure is 0.03MPa, in hot pressing, second glass substrate moves towards near the direction of the first glass substrate, and make the first encapsulation glue-line and second encapsulate glue-line deforming contact, and cross-linked polymeric occurs and forms the encapsulated layer with the containing cavity of accommodating solar battery sheet, until the second glass substrate and polytetrafluoroethylene ring offset away from one end of the first glass substrate, polytetrafluoroethylene ring stops the second glass substrate to continue to move towards near the direction of the first glass substrate, and make encapsulated layer be contained in polytetrafluoroethylene ring, obtain laminate.
(7) polytetrafluoroethylene ring is removed, and the groove formed between the first glass substrate and the second glass substrate around encapsulated layer, filling gel in groove, through solidification, falope ring was around encapsulated layer one week, and silica gel and the first glass substrate and the equal compact siro spinning technology of second substrate, solidification glue, the first glass substrate and the second glass substrate coordinate collecting encapsulated layer jointly, obtain solar photovoltaic assembly.
Adopt the method for testing that embodiment 1 is identical, the situation of the permeable situation and bubble that obtain the solar photovoltaic assembly of the present embodiment is in table 1.
Comparative example 1
The preparation process of the solar photovoltaic assembly of comparative example 1 is as follows:
(1) be that on first glass substrate of 3 millimeters, stacked thickness is the first encapsulation glue-line at thickness, and the first encapsulation size of glue-line and consistent size of the first glass substrate; Wherein, the material of the first encapsulation glue-line is uncrosslinked ethylene-vinyl acetate copolymer.
(2) solar battery sheet is laid at the middle part of the first encapsulation glue-line.And the thickness of solar battery sheet is 200 microns.
(3) on solar battery sheet, stacked thickness is the second encapsulation glue-line of 0.6 millimeter, and makes solar battery sheet be positioned at the middle part of the second encapsulation glue-line, and wherein, the material of the second encapsulation glue-line is uncrosslinked ethylene-vinyl acetate copolymer.
(4) at the second folded second glass substrate in encapsulation glue-line upper strata, semi-finished product are obtained.Wherein, the second glass substrate is armorplate glass, and the thickness of the second glass substrate is 3 millimeters.
(5) in vacuum degree be-0.015MPa condition under, by semi-finished product in 140 DEG C of hot pressing 1 minute, pressure is 0.04MPa, in hot pressing, second glass substrate and the first glass substrate move toward one another, and make the first encapsulation glue-line and second encapsulate glue-line deforming contact, and cross-linked polymeric occurs and forms the encapsulated layer with the containing cavity of accommodating solar battery sheet, obtain solar photovoltaic assembly.
Adopt the method for testing that embodiment 1 is identical, the situation of the permeable situation and bubble that obtain the solar photovoltaic assembly of the present embodiment is in table 1.
Table 1 is the permeable situation of the solar photovoltaic assembly of embodiment 1 ~ 3 and comparative example 1 and the situation of bubble.
Table 1
As can be seen from Table 1, there is faint permeable phenomenon in the solar photovoltaic assembly of embodiment 1 ~ 3, and does not have bubble.And the solar photovoltaic assembly of comparative example 1 is inner whole permeable serious and there is bubble phenomenon.Obviously, solar photovoltaic assembly prepared by embodiment 1 ~ 3 has good waterproof effect, comparatively reliably, and can effectively avoid the edge of encapsulated layer in lamination process to produce bubble.
Each technical characteristic of the above embodiment can combine arbitrarily, for making description succinct, the all possible combination of each technical characteristic in above-described embodiment is not all described, but, as long as the combination of these technical characteristics does not exist contradiction, be all considered to be the scope that this specification is recorded.
The above embodiment only have expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but can not therefore be construed as limiting the scope of the patent.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (10)
1. a preparation method for solar photovoltaic assembly, is characterized in that, comprises the steps:
A surface of the first glass substrate arranges polytetrafluoroethylene ring, jointly coordinates formation one host cavity to make described first glass substrate and described polytetrafluoroethylene ring;
Stacked first encapsulation glue-line on described first glass substrate, and described first encapsulation glue-line is contained in described polytetrafluoroethylene ring;
Lay solar battery sheet at the middle part of described first encapsulation glue-line, and described solar battery sheet is contained in described polytetrafluoroethylene ring, and the thickness sum that described solar battery sheet and described first encapsulates glue-line is less than the height of described polytetrafluoroethylene ring;
Stacked second encapsulation glue-line on described solar battery sheet, and making described solar battery sheet be positioned at the middle part of described second encapsulation glue-line, the thickness sum of described second encapsulation glue-line, described solar battery sheet and described first encapsulation glue-line is greater than the height of described polytetrafluoroethylene ring;
At described second folded second glass substrate in encapsulation glue-line upper strata, obtain semi-finished product;
By described semi-finished product hot pressing, move towards near the direction of described first glass substrate to make described second glass substrate, and make described first encapsulation glue-line and described second encapsulate glue-line deforming contact, and cross-linked polymeric occurs and forms the encapsulated layer with the containing cavity of accommodating described solar battery sheet, until described second glass substrate and described polytetrafluoroethylene ring offset away from one end of described first glass substrate, described polytetrafluoroethylene ring stops described second glass substrate to continue to move towards near the direction of described first glass substrate, and make described encapsulated layer be contained in described polytetrafluoroethylene ring, obtain laminate, and
Remove described polytetrafluoroethylene ring, and the groove formed between described first glass substrate and described second glass substrate around described encapsulated layer, solidification glue is filled in described groove, through solidification, described solidification glue, described first glass substrate and described second glass substrate coordinate the described encapsulated layer of collecting jointly, obtain solar photovoltaic assembly.
2. the preparation method of solar photovoltaic assembly according to claim 1, it is characterized in that, the step that a surface of described first glass substrate arranges described polytetrafluoroethylene ring is specially: within one week, arrange polytetrafluoroethylene bar at one of described first glass substrate surperficial edge, and described polytetrafluoroethylene bar is joined end to end ring body that formation one closes.
3. the preparation method of solar photovoltaic assembly according to claim 1, is characterized in that, the outer surface of described polytetrafluoroethylene ring is concordant with the side of described first glass substrate.
4. the preparation method of solar photovoltaic assembly according to claim 1, is characterized in that, temperature during described semi-finished product hot pressing is 135 ~ 145 DEG C.
5. the preparation method of solar photovoltaic assembly according to claim 1, is characterized in that, the step of described semi-finished product hot pressing carried out under vacuum, and vacuum degree is below-0.015MPa.
6. the preparation method of solar photovoltaic assembly according to claim 1, is characterized in that, pressure during described semi-finished product hot pressing is 0.03 ~ 0.05MPa, and hot pressing time is 5 ~ 15 minutes.
7. the preparation method of solar photovoltaic assembly according to claim 1, it is characterized in that, the thickness of described first encapsulation glue-line is 0.4 ~ 0.8 millimeter, the thickness of described second encapsulation glue-line is 0.4 ~ 0.8 millimeter, the thickness of described solar battery sheet is 190 ~ 210 microns, and the height of described polytetrafluoroethylene ring is 0.5 ~ 1.5 millimeter.
8. the preparation method of solar photovoltaic assembly according to claim 1, is characterized in that, described solidification glue is butyl rubber.
9. the preparation method of solar photovoltaic assembly according to claim 1, is characterized in that, the material of described first encapsulation glue-line and described second encapsulation glue-line is uncrosslinked ethylene-vinyl acetate copolymer.
10. the preparation method of solar photovoltaic assembly according to claim 1, it is characterized in that, the shape of figure that the described first encapsulation shape of glue-line and the inner surface of size and described polytetrafluoroethylene ring surround and in the same size, described second encapsulates the shape of the figure that the shape of glue-line and the inner surface of size and described polytetrafluoroethylene ring surround and in the same size.
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