CN113690345A - Efficient MWT component packaging method - Google Patents
Efficient MWT component packaging method Download PDFInfo
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- CN113690345A CN113690345A CN202111239217.4A CN202111239217A CN113690345A CN 113690345 A CN113690345 A CN 113690345A CN 202111239217 A CN202111239217 A CN 202111239217A CN 113690345 A CN113690345 A CN 113690345A
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- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000004806 packaging method and process Methods 0.000 title claims abstract description 15
- 238000010030 laminating Methods 0.000 claims abstract description 51
- 239000004593 Epoxy Substances 0.000 claims abstract description 31
- 238000001035 drying Methods 0.000 claims abstract description 28
- 229920000178 Acrylic resin Polymers 0.000 claims abstract description 20
- 239000004925 Acrylic resin Substances 0.000 claims abstract description 20
- 229920005749 polyurethane resin Polymers 0.000 claims abstract description 16
- 238000000576 coating method Methods 0.000 claims abstract description 15
- 239000010410 layer Substances 0.000 claims abstract description 15
- 229910052751 metal Inorganic materials 0.000 claims abstract description 13
- 239000002184 metal Substances 0.000 claims abstract description 13
- 239000011248 coating agent Substances 0.000 claims abstract description 12
- 239000003292 glue Substances 0.000 claims abstract description 11
- 239000011888 foil Substances 0.000 claims abstract description 10
- 239000002344 surface layer Substances 0.000 claims abstract description 10
- 239000002904 solvent Substances 0.000 claims abstract description 6
- 238000005507 spraying Methods 0.000 claims abstract description 6
- 238000005553 drilling Methods 0.000 claims abstract description 5
- 230000001678 irradiating effect Effects 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 claims description 22
- 238000005286 illumination Methods 0.000 claims description 8
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 4
- 239000002313 adhesive film Substances 0.000 claims description 3
- 238000005538 encapsulation Methods 0.000 claims 5
- 238000003475 lamination Methods 0.000 abstract description 31
- 230000000903 blocking effect Effects 0.000 abstract description 12
- 230000007774 longterm Effects 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract 1
- 229920002635 polyurethane Polymers 0.000 description 13
- 239000004814 polyurethane Substances 0.000 description 13
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 11
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 11
- 239000012790 adhesive layer Substances 0.000 description 9
- 229920001971 elastomer Polymers 0.000 description 9
- 238000002474 experimental method Methods 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- OWIKHYCFFJSOEH-UHFFFAOYSA-N Isocyanic acid Chemical group N=C=O OWIKHYCFFJSOEH-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 125000003700 epoxy group Chemical group 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000011527 polyurethane coating Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
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
- H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
-
- 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
-
- 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)
- Manufacturing & Machinery (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention provides a high-efficiency packaging method of an MWT (metal wrap through) component, which comprises the steps of firstly coating polyurethane resin on a conductive metal foil, and volatilizing a solvent and initially curing the solvent after passing through a drying tunnel; then spraying epoxy acrylic resin on the surface layer of the polyurethane resin, and irradiating the epoxy acrylic resin on the surface layer by ultraviolet light for curing; after laser drilling is carried out on the insulating layer, arranging the battery piece; and finally, laying other materials for producing the assembly, and then entering a laminating machine for secondary laminating and curing. The packaging surface obtained by the method has certain strength and hardness, avoids layering caused by insufficient bonding strength in the long-term outdoor use process, further causes uneven current, improves the lamination hidden crack ratio and the glue hole blocking ratio in the lamination process, and can adjust the lamination time beat, improve the power and improve the hot spots.
Description
Technical Field
The invention relates to the field of photovoltaic modules, in particular to a high-efficiency MWT module packaging method.
Background
In the conventional MWT photovoltaic component, because the positive electrode and the negative electrode of a component battery are arranged on the back of a battery piece, an electrode point is bonded with a conductive core board by using conductive adhesive, and the current of the positive electrode and the negative electrode is collected by the conductive core board.
The isolation layer between the back plate and the conductive core plate of the existing MWT component packaging structure is mostly of a whole structure, for example, an EPE or a whole coated insulating glue layer is used, then the insulation layer is punched to bond a positive electrode point, a negative electrode point and a conductive metal foil, the laying mode is adopted, the process is complex, the requirement on the hole site alignment precision is high, the field operation is difficult, the production cost is high, the raw material cost can be saved by adopting a gluing process, but the lamination process is easy to generate black strings, the interval between the strings is poor, the power is obviously reduced, and the current is uneven after a hot spot test.
Disclosure of Invention
The invention provides an efficient MWT component packaging method for solving the problems in the prior art, the packaging surface has certain strength and hardness, the phenomenon that layering occurs due to insufficient bonding strength in the long-term outdoor use process and further causes uneven current is avoided, the lamination hidden crack ratio and the glue hole blocking ratio in the lamination process are improved, the lamination time beat can be adjusted, the power is improved, and hot spots are improved.
The invention provides a high-efficiency MWT component packaging method, which comprises the following steps:
1) firstly coating polyurethane resin on a conductive metal foil, and volatilizing a solvent and initially curing after passing through a drying tunnel;
2) spraying epoxy acrylic resin on the surface layer of the polyurethane resin, and irradiating the epoxy acrylic resin on the surface layer by ultraviolet light for curing;
3) after laser drilling is carried out on the insulating layer, arranging the battery piece;
4) and laying a packaging adhesive film, glass and a back plate for producing the assembly, and then entering a laminating machine for secondary laminating and curing.
Further improvement, the temperature of the drying tunnel in the step 1) is 80 ℃, and the time is 1-2 min.
Further improvement, the thickness ratio of the polyurethane resin and the epoxy acrylic resin in the step 2) is 1-5: 1, the total thickness of the glue layer is 30-50 mm, and the ultraviolet illumination time is 30-50 s. The optimal solution method comprises the following steps: the thickness of the polyurethane resin is 25mm, the thickness of the epoxy acrylic resin is 15mm, and the ultraviolet irradiation time is 40 s.
Further improvement, in the secondary laminating and curing in the step 4), the heating temperature of one cavity is 133-138 ℃, the heating time is 7-9 min, the heating temperature of two cavities is 141-144 ℃, and the heating time is 7-9 min. The optimal method comprises the following steps: the heating temperature of one cavity is 136 deg.C, the heating temperature of two cavities is 144 deg.C, and the heating time of two cavities is 8 min.
Further improved, the coating process in the step 1) is a half coating mode, the negative electrode point is full coating, and the positive electrode point is directly contacted with the aluminum back field of the battery piece.
The invention has the beneficial effects that:
1. the preparation method comprises the steps of selecting epoxy acrylic resin and polyurethane, mutually matching, firstly coating the polyurethane resin on a conductive metal foil, volatilizing a drying tunnel solvent and initially curing, spraying the epoxy acrylic resin on the surface layer, and irradiating the epoxy acrylic resin on the surface layer by ultraviolet light for curing to ensure that the surface of the conductive metal foil has certain strength and hardness, so that the problems of uneven thickness, poor inter-sheet distance and the like caused by overlarge glue fluidity in the subsequent secondary high-temperature laminating process are solved.
2. Epoxy group in the epoxy acrylic resin and isocyanic acid group in the polyurethane can take place crosslinking reaction at high temperature lamination in-process, through the secondary high temperature lamination solidification back, increase the curing degree of depth, increase bonding strength, avoid long-term outdoor use in-process because of bonding strength is not enough, the layering appears, and then causes the electric current inequality.
3. The total thickness and the thickness proportion of the epoxy acrylic resin and the polyurethane resin are adjusted, and the lamination subfissure proportion and the glue hole blocking proportion in the lamination process are improved.
4. Adjusting the lamination time tact: the polyurethane curing agent and the epoxy acrylic resin are cured in the laminating machine again after passing through the drying tunnel in the earlier stage, so that the laminating curing time of the adhesive layer can be shortened by adopting higher laminating temperature, and the normal production beat of the component is met.
5. And (3) power boosting: conventional subassembly only carries out battery piece current collection through the position of punching, and the used glue film thickness of this scheme reduces than ordinary insulating layer thickness by a wide margin, can realize near positive pole point metal forming direct contact battery aluminium back of the body field, realizes the conduction of battery piece and metal forming current, and greatly increased current collection way reduces the internal loss, realizes power promotion effect.
6. And (3) hot spot improvement: due to the increase of the current transmission path and the contact area of the anode point, the heat generated by overlarge resistance in the working process of the component can be effectively reduced, the temperature of the electrode point when the component works is reduced, and the risk of hot spot failure is reduced.
Drawings
Fig. 1 is a MWT cell back side structure.
Fig. 2 is a plan view of a conventional insulating layer.
FIG. 3 is a plan view of a half-coating mode.
Fig. 4 is a design drawing of the whole core plate.
FIG. 5 shows a cross-sectional structure of the conductive metal foil and the adhesive layer.
Detailed Description
The invention will be further explained with reference to the drawings.
The invention provides a high-efficiency MWT component packaging method, which comprises the following steps:
1) firstly coating polyurethane resin on a conductive metal foil, and volatilizing a solvent and initially curing after passing through a drying tunnel;
2) spraying epoxy acrylic resin on the surface layer of the polyurethane resin, and irradiating the epoxy acrylic resin on the surface layer by ultraviolet light for curing;
3) after laser drilling is carried out on the insulating layer, arranging the battery piece;
4) and laying a packaging adhesive film, glass and a back plate for producing the assembly, and then entering a laminating machine for secondary laminating and curing.
Further improvement, the temperature of the drying tunnel in the step 1) is 80 ℃, and the time is 1-2 min.
Further improvement, the thickness ratio of the polyurethane resin and the epoxy acrylic resin in the step 2) is 1-5: 1, the total thickness of the glue layer is 30-50 mm, and the ultraviolet illumination time is 30-50 s. The optimal solution method comprises the following steps: the thickness of the polyurethane resin is 25mm, the thickness of the epoxy acrylic resin is 15mm, and the ultraviolet irradiation time is 40 s.
Further improvement, in the secondary laminating and curing in the step 4), the heating temperature of one cavity is 133-138 ℃, the heating time is 7-9 min, the heating temperature of two cavities is 141-144 ℃, and the heating time is 7-9 min. The optimal method comprises the following steps: the heating temperature of one cavity is 136 deg.C, the heating temperature of two cavities is 144 deg.C, and the heating time of two cavities is 8 min.
Fig. 1 shows a back structure of an MWT battery, in which a positive electrode 1 and a negative electrode 2 are arranged as shown in fig. 1, and fig. 2 shows a planar structure of a conventional separator, in which the positive electrode 1 and the negative electrode 2 are separated from each other by punching holes in a plane. Fig. 3 is a plan view of a half-coating mode, the coating process is a half-coating mode, full coating is performed at a negative electrode point, and a positive electrode point is directly contacted with an aluminum back field of a battery piece. Fig. 4 is a design diagram of the whole core board, and the bilateral symmetry design is adopted to ensure the current collection consistency of all parts of the whole core board. Fig. 5 is a cross-sectional view of the core board and the insulating layer structure, which sequentially comprises the following structures from top to bottom: epoxy acrylic acid 5, polyurethane 4 and conductive metal foil 3.
The specific implementation process of the invention is as follows:
conductive metal foil
Polyurethane coating
Heating in drying tunnel
Epoxy acrylic acid spray coating
Ultraviolet light curing
Laser drilling
Printing of conductive paste
Battery piece pendulum piece
EVA laying
Glass loading
Fixing of battery piece
Inverting before lamination
Lamination of
Chamfered edge
Lead wire
Dress frame
Junction box welding
Curing
Name plate and bar code paste
And (5) grading and packaging.
The specific embodiment of the invention is as follows:
example 1:
the thickness of polyurethane is 25mm, the temperature of a drying tunnel is 80 ℃, the drying tunnel time is 2min, the thickness of epoxy acrylic acid is 5mm, the ultraviolet illumination time is 30S, the total thickness of an adhesive layer is 30mm, the laminating temperature of a first cavity is 138 ℃, the laminating time of a first cavity is 7min, the laminating temperature of a second cavity is 142 ℃, and the laminating time of a first cavity is 7 min.
Example 2:
the thickness of polyurethane is 20mm, the temperature of a drying tunnel is 80 ℃, the drying tunnel time is 1min, the thickness of epoxy acrylic acid is 10mm, the ultraviolet illumination time is 35S, the total thickness of an adhesive layer is 30mm, the laminating temperature of a first cavity is 138 ℃, the laminating time of a first cavity is 7min, the laminating temperature of a second cavity is 142 ℃, and the laminating time of a first cavity is 7 min.
Example 3:
the thickness of polyurethane is 20mm, the temperature of a drying tunnel is 80 ℃, the drying tunnel time is 1min, the thickness of epoxy acrylic acid is 15mm, the ultraviolet irradiation time is 40S, the total thickness of an adhesive layer is 30mm, the laminating temperature of a first cavity is 138 ℃, the laminating time of a first cavity is 7min, the laminating temperature of a second cavity is 142 ℃, and the laminating time of a first cavity is 7 min.
Example 4:
the thickness of polyurethane is 30mm, the temperature of a drying tunnel is 80 ℃, the drying tunnel time is 2min, the thickness of epoxy acrylic acid is 10mm, the ultraviolet illumination time is 35S, the total thickness of an adhesive layer is 40mm, the laminating temperature of a cavity is 136 ℃, the laminating time of a cavity is 8min, the laminating temperature of two cavities is 144 ℃, and the laminating time of a cavity is 8 min.
Example 5:
the thickness of polyurethane is 25mm, the drying tunnel temperature is 80 ℃, the drying tunnel time is 2min, the thickness of epoxy acrylic acid is 15mm, the ultraviolet irradiation time is 40S, the total thickness of the glue layer is 40mm, the laminating temperature of a cavity is 136 ℃, the laminating time of a cavity is 8min, the laminating temperature of a cavity is 144 ℃, and the laminating time of a cavity is 8 min.
Example 6:
the thickness of polyurethane is 20mm, the temperature of a drying tunnel is 80 ℃, the drying tunnel time is 2min, the thickness of epoxy acrylic acid is 20mm, the ultraviolet irradiation time is 45S, the total thickness of an adhesive layer is 40mm, the laminating temperature of a first cavity is 136 ℃, the laminating time of a first cavity is 8min, the laminating temperature of a second cavity is 144 ℃, and the laminating time of a first cavity is 8 min.
Example 7:
the thickness of polyurethane is 35mm, the temperature of a drying tunnel is 80 ℃, the drying tunnel time is 3min, the thickness of epoxy acrylic acid is 15mm, the ultraviolet irradiation time is 40S, the total thickness of an adhesive layer is 50mm, the laminating temperature of a first cavity is 133 ℃, the laminating time of a first cavity is 9min, the laminating temperature of a second cavity is 141 ℃, and the laminating time of a first cavity is 9 min.
Example 8:
the thickness of polyurethane is 30mm, the temperature of a drying tunnel is 80 ℃, the drying tunnel time is 2min, the thickness of epoxy acrylic acid is 20mm, the ultraviolet illumination time is 40S, the total thickness of an adhesive layer is 50mm, the laminating temperature of a first cavity is 133 ℃, the laminating time of a first cavity is 9min, the laminating temperature of a second cavity is 141 ℃, and the laminating time of a first cavity is 9 min.
Example 9:
the thickness of polyurethane is 25mm, the temperature of a drying tunnel is 80 ℃, the drying tunnel time is 2min, the thickness of epoxy acrylic acid is 25mm, the ultraviolet illumination time is 50S, the total thickness of a glue layer is 50mm, the laminating temperature of a first cavity is 133 ℃, the laminating time of a first cavity is 9min, the laminating temperature of a second cavity is 141 ℃, and the laminating time of a first cavity is 9 min.
The performance indicators for the above examples are as follows:
example 1:
the proportion of uneven current caused by blocking of the rubber holes is 5%, the proportion of hidden cracks in lamination is 0%, the proportion of poor string black is 3%, the proportion of uneven string black is 7%, and the proportion of uneven current caused by hot spot experiment is 10%.
Example 2:
the proportion of uneven current caused by blocking the rubber holes is 4%, the lamination hidden crack proportion is 2%, the film string is poor and black, the lamination thickness is uneven and black is 5%, and the hot spot experiment current is uneven and 9%.
Example 3:
the proportion of uneven current caused by blocking the rubber holes is 0%, the lamination hidden crack proportion is 0%, the film string is poor and black, the lamination thickness is uneven and black is 0%, and the hot spot experiment current is uneven and 7%.
Example 4:
the proportion of current unevenness caused by blocking the rubber holes is 7%, the proportion of lamination hidden cracks is 0%, the film string is poor and has black color 5%, the lamination thickness is uneven and has black color 2%, and the current unevenness caused by hot spot experiment is 3%.
Example 5:
the proportion of uneven current caused by blocking the rubber holes is 0%, the lamination hidden crack proportion is 0%, the film string is poor and black, the lamination thickness is uneven and black is 0%, and the hot spot experiment current is uneven and 0%.
Example 6:
the proportion of uneven current caused by blocking the rubber holes is 0%, the lamination hidden crack proportion is 3%, the film string is poor and black, the lamination thickness is uneven and black is 0%, and the hot spot experiment current is uneven and 6%.
Example 7:
the proportion of current unevenness caused by blocking the rubber holes is 8%, the lamination hidden crack proportion is 0%, the film string is poor and has black color 3%, the lamination thickness is uneven and has black color 1%, and the current unevenness caused by hot spot experiment is 0%.
Example 8:
the proportion of uneven current caused by blocking the rubber holes is 10%, the lamination hidden crack proportion is 5%, the string defect string is 5%, the lamination thickness is 0%, and the hot spot experiment current is 2%.
Example 9:
the proportion of uneven current caused by blocking the rubber holes is 10%, the lamination hidden crack proportion is 7%, the piece string is poor and black is 7%, the lamination thickness is uneven and black is 0%, and the hot spot experiment current is uneven and 5%.
The best solution of example 5 can be obtained by comparing the performance indexes.
While the invention has been described in terms of its preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.
Claims (7)
1. An efficient MWT component packaging method is characterized by comprising the following steps:
1) firstly coating polyurethane resin on a conductive metal foil, and volatilizing a solvent and initially curing after passing through a drying tunnel;
2) spraying epoxy acrylic resin on the surface layer of the polyurethane resin, and irradiating the epoxy acrylic resin on the surface layer by ultraviolet light for curing;
3) after laser drilling is carried out on the insulating layer, arranging the battery piece;
4) and laying a packaging adhesive film, glass and a back plate for producing the assembly, and then entering a laminating machine for secondary laminating and curing.
2. The method for efficient encapsulation of MWT components according to claim 1, characterized by: the temperature of the drying tunnel in the step 1) is 80 ℃, and the time is 1-2 min.
3. The method for efficient encapsulation of MWT components according to claim 1, characterized by: the thickness ratio of the polyurethane resin to the epoxy acrylic resin in the step 2) is 1-5: 1, the total thickness of the glue layer is 30-50 mm, and the ultraviolet illumination time is 30-50 s.
4. The method for efficiently encapsulating MWT module as claimed in claim 3, wherein: the thickness of the polyurethane resin is 25mm, the thickness of the epoxy acrylic resin is 15mm, and the ultraviolet irradiation time is 40 s.
5. The method for efficient encapsulation of MWT components according to claim 1, characterized by: in the secondary laminating and curing in the step 4), the heating temperature of one cavity is 133-138 ℃, the heating time is 7-9 min, the heating temperature of two cavities is 141-144 ℃, and the heating time is 7-9 min.
6. The method for efficient encapsulation of MWT components according to claim 5, characterized in that: the heating temperature of one cavity is 136 deg.C, the heating temperature of two cavities is 144 deg.C, and the heating time of two cavities is 8 min.
7. The method for efficient encapsulation of MWT components according to claim 1, characterized by: the coating process in the step 1) is a half coating mode, the negative pole point is full coated, and the positive pole point is directly contacted with the aluminum back surface field of the battery piece.
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| CN202111239217.4A CN113690345A (en) | 2021-10-25 | 2021-10-25 | Efficient MWT component packaging method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103522658A (en) * | 2013-09-18 | 2014-01-22 | 芜湖群跃电子科技有限公司 | Backboard for metal perforation type solar battery and preparation method of backboard |
| US20150144180A1 (en) * | 2012-06-05 | 2015-05-28 | Ebfoil S.R.L. | Encapsulating layer adapted to be applied to back-sheets for photovoltaic modules including back-contact cells |
| JP2016500569A (en) * | 2012-10-30 | 2016-01-14 | バイエル・マテリアルサイエンス・リミテッド・ライアビリティ・カンパニーＢａｙｅｒ ＭａｔｅｒｉａｌＳｃｉｅｎｃｅ ＬＬＣ | Processes for coating substrates and substrates formed therefrom |
| US20170133537A1 (en) * | 2014-03-21 | 2017-05-11 | E I Du Pont De Nemours And Company | Integrated back-sheets for back-contact solar cell modules |
-
2021
- 2021-10-25 CN CN202111239217.4A patent/CN113690345A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150144180A1 (en) * | 2012-06-05 | 2015-05-28 | Ebfoil S.R.L. | Encapsulating layer adapted to be applied to back-sheets for photovoltaic modules including back-contact cells |
| JP2016500569A (en) * | 2012-10-30 | 2016-01-14 | バイエル・マテリアルサイエンス・リミテッド・ライアビリティ・カンパニーＢａｙｅｒ ＭａｔｅｒｉａｌＳｃｉｅｎｃｅ ＬＬＣ | Processes for coating substrates and substrates formed therefrom |
| CN103522658A (en) * | 2013-09-18 | 2014-01-22 | 芜湖群跃电子科技有限公司 | Backboard for metal perforation type solar battery and preparation method of backboard |
| US20170133537A1 (en) * | 2014-03-21 | 2017-05-11 | E I Du Pont De Nemours And Company | Integrated back-sheets for back-contact solar cell modules |
Non-Patent Citations (1)
| Title |
|---|
| 庄彩虹 等: "环氧丙烯酸酯树脂的制备及其聚氨酯改性", 《中南大学学报》 * |
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