CN111739965A - Water-blocking PID-resistant solar panel assembly and preparation method thereof - Google Patents

Water-blocking PID-resistant solar panel assembly and preparation method thereof Download PDF

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Publication number
CN111739965A
CN111739965A CN202010474949.0A CN202010474949A CN111739965A CN 111739965 A CN111739965 A CN 111739965A CN 202010474949 A CN202010474949 A CN 202010474949A CN 111739965 A CN111739965 A CN 111739965A
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water
blocking
pid
adhesive film
solar cell
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CN202010474949.0A
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Inventor
杨小旭
潘建军
王富成
秦文彬
许伟
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Suzhou First Pv Material Co ltd
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Suzhou First Pv Material Co ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/042—PV modules or arrays of single PV cells
    • H01L31/048—Encapsulation of modules
    • 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
    • H01L31/18—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
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

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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)
  • Photovoltaic Devices (AREA)

Abstract

The invention belongs to the technical field of solar cells, and particularly relates to a water-blocking PID-resistant solar cell panel assembly and a preparation method thereof, wherein the water-blocking PID-resistant solar cell panel assembly comprises a back panel, a lower packaging adhesive film, a cell panel, an EVA (ethylene vinyl acetate) adhesive film and glass, a water-blocking layer is arranged on the back panel or the lower packaging adhesive film, the water-blocking layer comprises a high water-blocking area and a low water-blocking area, and the water vapor transmittance of the high water-blocking area is less than 0.5g/m2.d‑1The water vapor transmission rate of the low water resistance area is more than 5g/m2.d‑1. The invention carries out local water blocking on the battery assembly, thereby not only effectively preventing water vapor in the environment from entering the battery assembly, but also ensuring that the water vapor entering the battery assembly is discharged; the anti-PID effect of the battery pack is improved.

Description

Water-blocking PID-resistant solar panel assembly and preparation method thereof
Technical Field
The invention belongs to the technical field of solar cells, and particularly relates to a water-blocking PID-resistant solar cell panel assembly and a preparation method thereof.
Background
Solar module's back encapsulation, prior art is that the single glass back uses polymer multilayer combined material, the glass is used at the dual glass subassembly back, carry out lamination packaging with the EVA glued membrane and become the subassembly, the subassembly is long-term in outdoor use, especially in the high temperature and high humidity region, inside steam enters into the subassembly easily, on the one hand, cause the bonding delaminating of glued membrane to produce appearance problems such as swell, on the other hand steam can make the glued membrane degradation, produce acidic material, these acidic material can corrode the metal conducting layer on the battery piece, cause the electricity generation inefficacy of subassembly. Power generation failure of the assembly due to moisture infiltration is particularly appreciated over long periods of use. In order to relieve the failure of the battery piece, CN109401682A, CN105647406A and CN104449436B enhance the water-blocking performance of the adhesive film and reduce the release amount of acetic acid of the adhesive film under the water vapor condition, and the method can only relieve the failure to a certain extent, control the entry of water vapor and protect the battery piece from being corroded and damaged.
In order to solve the problem of water vapor entering, the back plate of CN110757916A adopts a layer of metal film or metal coating to reduce the water vapor transmission rate to 0.01g/m2.d-1(ii) a CN107240617A adopts a material layer added with a water-blocking agent as a layer of the composite material; CN104868003A adopts a metal foil material layer with the thickness of 5-100 microns; the barrier layer adopted by CN102496642B is made of aluminum or silicon dioxide material; the water-resistant layer adopted in CN101814542A is Liquid Crystal Polymer (LCP).
The composite back plate in the prior art of the invention only simply enhances the water resistance of the high polymer material, and compared with the scheme that inorganic glass is used as the back plate material, the water vapor permeability performance of all areas on the back surface is not different, so that the water vapor cannot seep out even though the water vapor is prevented from seeping; by adopting the scheme or using glass as a back plate for packaging, although the seepage of water vapor on the front surface and the back surface can be solved, the problem of seepage of the water vapor entering the assembly for a long time is not considered, and the problem of assembly failure also exists.
Disclosure of Invention
The invention aims to solve the problem of failure of a battery piece in a component caused by steam corrosion, and provides a water-blocking PID-resistant solar battery component.
The first purpose of the invention is realized by the following technical scheme:
the solar cell module comprises a back plate, a lower packaging adhesive film, a cell panel, an EVA adhesive film and glass, wherein a water-blocking layer is arranged on the back plate or the lower packaging adhesive film and comprises a high water-blocking area and a low water-blocking area, and the water vapor transmittance of the high water-blocking area is less than 0.5g/m2.d-1The water vapor transmission rate of the low water resistance area is more than 5g/m2.d-1。
When the module generates electricity in the daytime, the temperature of the battery module is higher than the ambient temperature, and water vapor can seep out from the interior of the battery module through the low-resistance water area; and the components do not work at night, and water vapor can be prevented from permeating into the components from the environment through high water resistance.
Preferably, the high-water-resistance area is located in a cell area of the cell panel, and the low-water-resistance area is located at a cell interval.
Preferably, the high water resistance region is located in a cell region of the cell panel and at a part of cell interval, and the low water resistance region is located at a part of cell interval.
Preferably, the interval of the cell plates in which the low-resistance water region is located accounts for 80% or more of the interval of all the cell plates.
Preferably, the high water-resistant region is an organic thin film with a thickness of 0.1-100 microns.
Preferably, the waterproof layer is arranged on the back plate and is positioned between the back plate and the lower packaging adhesive film.
Preferably, the water-blocking layer is provided with two or more layers.
Preferably, the organic thin film is composed of a polymer having a main chain containing p-xylene or a halogenated derivative thereof, or a polymer of biphenyl, benzoyloxybenzene, benzoylaminobenzene, or benzyliminobenzene having a main chain containing 1, 4-phenylene.
Preferably, the component of the organic thin film is dichloro-p-xylylene dimer.
Preferably, the organic thin film contains a tetrachloro-p-xylene ring dimer as a component.
Preferably, the organic thin film comprises a polymer of p-phenylene terephthalamide.
Preferably, the organic film is composed of a polymer of terephthalic acid and terephthalic acid.
The second purpose of the invention is to provide the preparation method of the water-blocking and anti-PID solar panel component, which comprises a water-blocking layer forming step, and the specific operation is that (1) under a vacuum environment, the components of the water-blocking layer are subjected to high-temperature cracking to generate free radicals, the free radicals are deposited on a back plate or the lower packaging adhesive film to form an organic film, then the organic film corresponding to the cell piece interval is removed, and the water-blocking layer is formed on the back plate or the lower packaging adhesive film; or (2) dissolving the components of the water-resistant layer in a solvent, forming an organic film by precision coating, removing the organic film corresponding to the interval of the battery piece, and forming the water-resistant layer on the back plate or the lower packaging adhesive film.
Preferably, the solvent is xylene, chlorobenzene, dichlorobenzene or 2, 4-pentanedione highly polar solvent.
Preferably, the method for the organic thin film corresponding to the interval of the battery piece is laser ablation, high-pressure plasma partial discharge, mechanical punching, screen printing or roller transfer.
By implementing the technical scheme, the invention has the following advantages:
1. the battery assembly is partially blocked, so that water vapor in the environment can be effectively prevented from entering the battery assembly, and the water vapor entering the battery assembly can be discharged;
2. the PID resistance effect of the battery assembly is improved;
3. the formed organic film can realize toughening and reduce the risk of battery fragmentation or subfissure;
4. the formed compact organic film can prevent the passivation layer of the battery piece from being damaged by the packaging material or metal ions in the outside.
Drawings
FIG. 1 is a schematic view of a solar cell module according to example 1 of the present invention;
FIG. 2 is a schematic view of a solar cell module according to example 2 of the present invention;
fig. 3 is a schematic view of a solar cell module in embodiment 4 of the present invention.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments. It is to be understood that the embodiments of the present invention are merely for illustrating the present invention and not for limiting the present invention, and that various substitutions and alterations made according to the common knowledge and conventional means in the art without departing from the technical idea of the present invention are included in the scope of the present invention.
Example 1
A water-blocking anti-PID solar cell panel assembly is shown in figure 1 and comprises a back panel 100, a lower packaging adhesive film 200, a cell panel 300, an EVA adhesive film 400 and glass 500, the structures of the components are the same as those in the prior art, except that a water-blocking layer is arranged on the front surface (namely the contact surface with the lower packaging adhesive film 200) of the back panel 100, the water-blocking layer comprises a high water-blocking area 600a and a low water-blocking area 600b, and the water vapor transmittance of the high water-blocking area 600a is 0.1g/m2.d-1The water vapor transmission rate of the low water resistance area 600b is 6g/m2.d-1. The high water resistance region 600a is located in all cell areas of the cell panel, and the low water resistance region 600b is located at all cell intervals of the cell panel. The water-resistant layer is composed of polymer of p-phenylene terephthalamide, and is deposited to form a high water-resistant area 100a with the thickness of 2 microns at room temperature in a vacuum environment.
Example 2
A water-blocking PID-resistant solar cell panel assembly is shown in figure 2 and comprises a back panel 100, a lower packaging adhesive film 200, a cell panel 300, an EVA adhesive film 400 and glass 500, wherein the structures are the same as those in the prior art, and the difference is that the front surface of the back panel 100 (namely the lower surface of the back panel and the lower surface of the back panel) is provided with the differenceThe contact surface of the packaging adhesive film 200) is provided with two water-blocking layers, wherein the water-blocking layers comprise a high water-blocking area 600a and a low water-blocking area 600b, and the water vapor transmittance of the high water-blocking area 600a is 0.01g/m2.d-1The water vapor transmission rate of the low water resistance area 600b is 10g/m2.d-1. The high water resistance region 600a is located in all cell areas of the cell panel, and the low water resistance region 600b is located at all cell intervals of the cell panel. The water resisting layer is tetrachloride p-xylene ring dimer, and the solid tetrachloride p-xylene ring dimer is sublimated into a gaseous state at about 150 ℃ in a vacuum environment; cracking tetrachlor-p-xylene ring dimer to form active 2, 5-dichloro-p-dimethylene benzene with free radicals at about 650 ℃; at room temperature (25 ℃), 2, 5-dichloro-p-dimethylene benzene in free state deposits and polymerizes on the surface of a solid substrate to form a pinhole-free organic film with the thickness of 20 microns.
Example 3
A water-blocking anti-PID solar cell panel assembly is shown in figure 3 and comprises a back plate 100, a lower packaging adhesive film 200, a cell panel 300, an EVA adhesive film 400 and glass 500, the structures of the components are the same as those in the prior art, except that a water-blocking layer is arranged on the front surface (namely the contact surface with the cell panel 300) of the lower packaging adhesive film 200, the water-blocking layer comprises a high water-blocking area 600a and a low water-blocking area 600b, and the water vapor transmittance of the high water-blocking area 600a is 0.3g/m2.d-1The water vapor transmission rate of the low water resistance area 600b is 7g/m2.d-1. The high water resistance region 600a is located in the whole cell area of the cell panel and 10% of the cell interval, and the low water resistance region 600b is located in 90% of the cell interval of the cell panel.
Example 4
A water-blocking anti-PID solar cell panel assembly comprises a back panel 100, a lower packaging adhesive film 200, a cell panel 300, an EVA adhesive film 400 and glass 500, the structures of the solar cell panel assembly are the same as those in the prior art, the difference is that a water-blocking layer is arranged in the lower packaging adhesive film 200 and comprises a high water-blocking area 600a and a low water-blocking area 600b, and the water vapor transmittance of the high water-blocking area 600a is 0.05g/m2.d-1The water vapor transmission rate of the low water resistance area 600b is 9g/m2.d-1. The high water resistance region 600a is located in all cell areas of the cell panel, and the low water resistance region 600b is located at all cell intervals of the cell panel.
Example 5
A water-blocking anti-PID solar cell panel assembly is shown in figure 3 and comprises a back plate 100, a lower packaging adhesive film 200, a cell panel 300, an EVA adhesive film 400 and glass 500, the structures of the components are the same as those in the prior art, except that a water-blocking layer is arranged on the front surface (namely the contact surface with the cell panel 300) of the lower packaging adhesive film 200, the water-blocking layer comprises a high water-blocking area 600a and a low water-blocking area 600b, and the water vapor transmittance of the high water-blocking area 600a is 0.01g/m2.d-1The water vapor transmission rate of the low water resistance area 600b is 15g/m2.d-1. The high water resistance region 600a is located in the whole cell area of the cell panel and 20% of the cell interval, and the low water resistance region 600b is located in 80% of the cell interval of the cell panel.
Example 6
A method for preparing a water-blocking and anti-PID type solar panel component comprises the steps of coating a weather-resistant coating, an insulating coating and a bottom coating on a back panel 100 in sequence, dissolving a polymer of p-phenylene terephthalamide in dimethylbenzene, precisely coating the polymer on the bottom coating to form an organic film, removing part of the organic film by processes (such as laser ablation, high-pressure plasma partial discharge, mechanical punching, screen printing, roller transfer and the like), forming a water-blocking layer according to a set pattern, coating a bonding layer of a lower packaging adhesive film 200 on the water-blocking layer, and forming other structures according to the prior art.
Example 7
A method for preparing a water-blocking and anti-PID type solar panel assembly, which is to prepare the battery assembly described in example 2, wherein two water-blocking layers are arranged on the front surface of the back plate 100. The method comprises the following specific operations: sequentially coating a weather-resistant coating (Dajin FEVE resin coating GK 570) and a bottom coating (Changxing chemical acrylic resin ETERSOL 6923) on the back plate 100, dissolving polymers of phenyl terephthalic acid terephthalate in 2, 4-pentanedione, forming an organic film on the bottom coating by precision coating, removing part of the organic film by a process (such as laser ablation, high-pressure plasma partial discharge, mechanical punching, screen printing, roller transfer and the like), forming a water-blocking layer according to a set pattern, coating a two-component polyurethane adhesive layer with the lower packaging adhesive film 200 on the water-blocking layer, adhering a PET insulating substrate containing the bottom coating, repeatedly coating a layer of organic film, removing part of the organic film by the process (such as laser ablation, high-pressure plasma partial discharge, mechanical punching, screen printing, roller transfer and the like), forming the water-blocking layer according to the set pattern, and then the water-blocking layer is coated with an adhesive layer with the lower packaging adhesive film 200, and other structures are formed according to the prior art.
Comparative example
A solar cell panel assembly comprises a back panel 100, a lower packaging adhesive film 200, a cell panel 300, an EVA adhesive film 400 and glass 500, and the structures are the same as those in the prior art.
The performance of the solar panel assemblies of the respective examples and comparative examples was measured, and the results are shown in table 1.
TABLE 1
Figure DEST_PATH_IMAGE002

Claims (10)

1. The waterproof and PID-resistant solar cell module comprises a back plate, a lower packaging adhesive film, a cell panel, an EVA adhesive film and glass, and is characterized in that a waterproof layer is arranged on the back plate or the lower packaging adhesive film, the waterproof layer comprises a high-water-resistance area and a low-water-resistance area, and the water vapor transmittance of the high-water-resistance area is less than 0.5g/m2.d-1The water vapor transmission rate of the low water resistance area is more than 5g/m2.d-1。
2. A water-blocking PID type solar cell module as claimed in claim 1, wherein the high water-blocking regions are located in the cell areas of the cell panel, and the low water-blocking regions are located at the cell intervals.
3. A water-blocking PID type solar cell module as claimed in claim 1, characterized in that said high water-blocking region is an organic thin film with a thickness comprised between 0.1 micron and 100 micron.
4. A water-blocking PID-resistant solar cell module as claimed in claim 3, wherein the organic thin film is composed of a polymer having a main chain containing p-xylene or a halogenated derivative thereof, or a polymer of biphenyl, benzoyloxybenzene, benzoylaminobenzene, benzyliminobenzene having a main chain containing 1, 4-phenylene group.
5. The water-blocking and PID-resistant solar cell module according to claim 1, wherein the water-blocking layer is disposed on the back sheet and between the back sheet and the lower encapsulant film.
6. A water-blocking PID-resistant solar cell module according to claim 1, characterized in that the water-blocking layer is provided with two or more layers.
7. A water-blocking PID type solar cell module as claimed in claim 1, wherein the high water-blocking region is located in the cell region of the cell panel and in the partial cell gap, and the low water-blocking region is located in the partial cell gap.
8. A water-blocking PID-resistant solar cell module as claimed in claim 1, wherein the low-water-resistance region is located at a cell interval of 80% or more of the total cell interval.
9. A water-blocking PID-resistant solar panel assembly manufacturing method according to any one of claims 1-8, comprising a water-blocking layer forming step, which is specifically operated to (1) pyrolysis of the components of the water-blocking layer under vacuum environment to generate free radicals, deposit the free radicals on the back plate or the lower packaging adhesive film to form organic thin films, remove the organic thin films corresponding to the cell spacing, and form a water-blocking layer on the back plate or the lower packaging adhesive film; or (2) dissolving the components of the water-resistant layer in a solvent, forming an organic film by precision coating, removing the organic film corresponding to the interval of the battery piece, and forming the water-resistant layer on the back plate or the lower packaging adhesive film.
10. A method of making a water-blocking and anti-PID type solar panel assembly according to claim 9, wherein the solvent is xylene, chlorobenzene, dichlorobenzene or 2, 4-pentanedione.
CN202010474949.0A 2020-05-29 2020-05-29 Water-blocking PID-resistant solar panel assembly and preparation method thereof Withdrawn CN111739965A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012053042A1 (en) * 2010-10-19 2012-04-26 Fujifilm Corporation Solar cell module and method of manufacturing the same
CN203205441U (en) * 2013-03-27 2013-09-18 比亚迪股份有限公司 Solar cell backboard and solar cell module
CN108173336A (en) * 2018-02-08 2018-06-15 耀灵科技（上海）有限公司 flexible solar charger and manufacturing method
CN212230442U (en) * 2020-05-29 2020-12-25 苏州福斯特光伏材料有限公司 Water-blocking PID-resistant solar panel assembly

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012053042A1 (en) * 2010-10-19 2012-04-26 Fujifilm Corporation Solar cell module and method of manufacturing the same
TW201218395A (en) * 2010-10-19 2012-05-01 Fujifilm Corp Solar cell module and fabricating method thereof
CN203205441U (en) * 2013-03-27 2013-09-18 比亚迪股份有限公司 Solar cell backboard and solar cell module
CN108173336A (en) * 2018-02-08 2018-06-15 耀灵科技（上海）有限公司 flexible solar charger and manufacturing method
CN212230442U (en) * 2020-05-29 2020-12-25 苏州福斯特光伏材料有限公司 Water-blocking PID-resistant solar panel assembly

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Application publication date: 20201002