CN103646978B - Solar module - Google Patents
Solar module Download PDFInfo
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- CN103646978B CN103646978B CN201310660784.6A CN201310660784A CN103646978B CN 103646978 B CN103646978 B CN 103646978B CN 201310660784 A CN201310660784 A CN 201310660784A CN 103646978 B CN103646978 B CN 103646978B
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- encapsulating material
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- 239000000463 material Substances 0.000 claims abstract description 59
- 230000004888 barrier function Effects 0.000 claims abstract description 36
- 241000446313 Lamella Species 0.000 claims abstract description 19
- 229910052751 metal Inorganic materials 0.000 claims abstract description 12
- 239000002184 metal Substances 0.000 claims abstract description 12
- 150000001768 cations Chemical class 0.000 claims abstract description 10
- -1 polypropylene Polymers 0.000 claims description 8
- 239000004642 Polyimide Substances 0.000 claims description 5
- 239000013078 crystal Substances 0.000 claims description 5
- 229920001721 polyimide Polymers 0.000 claims description 5
- 239000004698 Polyethylene Substances 0.000 claims description 4
- 239000004743 Polypropylene Substances 0.000 claims description 4
- 229910021419 crystalline silicon Inorganic materials 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 4
- 229920000573 polyethylene Polymers 0.000 claims description 4
- 229920001155 polypropylene Polymers 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims description 3
- 229920005591 polysilicon Polymers 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 239000005038 ethylene vinyl acetate Substances 0.000 description 16
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 16
- 238000005516 engineering process Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 3
- 229920002620 polyvinyl fluoride Polymers 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- BUBNOQUZOCSBNU-UHFFFAOYSA-N benzene oxalic acid Chemical compound C1=CC=CC=C1.C(C(=O)O)(=O)O BUBNOQUZOCSBNU-UHFFFAOYSA-N 0.000 description 2
- 125000002091 cationic group Chemical group 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 150000005690 diesters Chemical class 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 229920002313 fluoropolymer Polymers 0.000 description 2
- 239000004811 fluoropolymer Substances 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 238000002161 passivation Methods 0.000 description 2
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 2
- 239000004926 polymethyl methacrylate Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000006117 anti-reflective coating Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 238000005234 chemical deposition Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 125000002573 ethenylidene group Chemical group [*]=C=C([H])[H] 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229920000554 ionomer Polymers 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 150000002734 metacrylic acid derivatives Chemical class 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 229920005644 polyethylene terephthalate glycol copolymer Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920003225 polyurethane elastomer Polymers 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Landscapes
- 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)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
Abstract
The invention provides a kind of solar module, this solar module comprises backsheet layer (10) stacked successively, the first encapsulating material layer (20), battery lamella (30), the second encapsulating material layer (40) and glassy layer (50), second encapsulating material layer (40) comprises encapsulating material layer (41), lower encapsulating material layer (43) and for stopping that the metal cation of glassy layer (50) enters the barrier layer (42) of battery lamella (30), and barrier layer (42) are arranged between encapsulating material layer (41) and lower encapsulating material layer (43).Technical scheme of the present invention efficiently solves the problem that PID phenomenon appears in solar module in prior art.
Description
Technical field
The present invention relates to technical field of solar batteries, in particular to a kind of solar module.
Background technology
Solar energy, as the emerging green regenerative energy sources of one, has carbon dioxide zero discharge, a feature without cease that energy source is got, how to ensure that solar cell actual power is output into the important subject of mankind's energy strategy.Constantly expand along with photovoltaic plant installs scale, difference and the uncertainty of installation and environment for use manifest gradually, potential induction attenuation (PotentialInducedDegradation the is called for short PID) phenomenon that initiation solar module power significantly reduces has been found in monitor optical overhead utility process.Above-mentioned phenomenon is found large area in 2005 first, and wherein most is representational for Sunpower(Zisco of well-known crystal silicon solar energy battery manufacturer of the U.S.) company finds that " Surface Polarization " phenomenon appears in its back contacts high-efficiency battery sheet.If apply the 1000V forward voltage relative to ground on solar module, under the effects such as electric field, leakage current can flow to ground and then at solar battery sheet surface accumulation negative electrical charge from solar battery sheet, these negative electrical charges can by the positive charge (metal cation in glass, as sodium ion) penetrate encapsulating material migrate to solar battery sheet surface along direction of an electric field migration, complex centre is formed on solar battery sheet surface, cause solar module power output significantly to reduce, and then reduce the power generation performance of solar cell.
Summary of the invention
The present invention aims to provide a kind of solar module, to solve the problem that PID phenomenon appears in solar module in prior art.
To achieve these goals, the invention provides a kind of solar module, comprise backsheet layer stacked successively, the first encapsulating material layer, battery lamella, the second encapsulating material layer and glassy layer, second encapsulating material layer comprises encapsulating material layer, lower encapsulating material layer and for stopping that the metal cation of glassy layer enters the barrier layer of battery lamella, and barrier layer is arranged between encapsulating material layer and lower encapsulating material layer.
Further, barrier layer is the polypropylene that polyimides or fusing point are all more than or equal to that the polyethylene of 100 DEG C or fusing point are all more than or equal to 100 DEG C.
Further, the thickness on barrier layer is within the scope of 5 μm ~ 200 μm.
Further, the number of plies on barrier layer is one deck.
Further, the number of plies on barrier layer is multilayer, and the thickness on every layer of barrier layer is more than or equal to 2 μm.
Further, the thickness of upper encapsulating material layer and the thickness sum of lower encapsulating material layer and the ratio of the thickness of the second encapsulating material layer are within the scope of 0.2 ~ 0.6.
Further, battery lamella is monocrystal solar cell, class single crystal battery, polysilicon solar cell or the hetero-junction solar cell based on crystalline silicon.
Further, the first encapsulating material layer, upper encapsulating material layer and lower encapsulating material layer are EVA, PVB, TPU, PO or Inomer.
Further, backsheet layer is glass, steel plate or aluminium sheet.
Apply technical scheme of the present invention, between upper encapsulating material layer and lower encapsulating material layer, barrier layer is set, barrier layer can stop that the metal cation of glassy layer enters into battery lamella, this avoid the surface that metal cation is gathered in battery lamella, the surface of battery lamella is not easily passivated, and then avoid producing PID phenomenon, thus ensure that the output of the normal power of photovoltaic module.
Accompanying drawing explanation
The Figure of description forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the structural representation of the embodiment according to solar module of the present invention.
Above-mentioned accompanying drawing comprises the following drawings mark:
10, backsheet layer; 20, the first encapsulating material layer; 30, battery lamella; 40, the second encapsulating material layer; 41, upper encapsulating material layer; 42, barrier layer; 43, lower encapsulating material layer; 50, glassy layer.
Embodiment
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
As shown in Figure 1, the solar module of the present embodiment comprises stacked successively backsheet layer 10, first encapsulating material layer 20, battery lamella 30, second encapsulating material layer 40 and glassy layer 50, second encapsulating material layer 40 comprises encapsulating material layer 41, lower encapsulating material layer 43 and for stopping that the metal cation of glassy layer 50 enters the barrier layer 42 of battery lamella 30, and barrier layer 42 is arranged between encapsulating material layer 41 and lower encapsulating material layer 43.
The solar module of application the present embodiment, between upper encapsulating material layer 41 and lower encapsulating material layer 43, barrier layer 42 is set, barrier layer 42 can stop that the metal cation of glassy layer 50 enters into battery lamella 30, this avoid the surface that metal cation is gathered in battery lamella 30, the surface of battery lamella 30 is not easily passivated, and then avoid producing PID phenomenon, thus ensure that the output of the normal power of photovoltaic module.
In the prior art, in order to ensure that the actual power of solar module exports, publication number is that the Chinese patent of CN102864439A discloses a kind of method preparing the antireflective coating with anti-PID effect, and the metal cation of glassy layer in solar module can be hindered to move to silion cell.Publication number is that the Chinese patent of CN102945890A discloses one at crystalline silicon front side of matrix formation SiO
2/ SiN
xthe technique of lamination composite membrane, with realize crystal silicon cell assembly current potential bring out decay qualified.
Similar patent CN102864439A and patent CN102945890A etc. adopt chemical deposition process to prepare the method for MULTIPLE COMPOSITE rete, for the battery production business having ripe production line, on the one hand, increase passivation technology difficulty, affect productive temp and production capacity.On the other hand, need to transform existing equipment, add manufacturing cost to a certain extent.
And the preferred embodiment of the application efficiently solves the problem that technology difficulty is large, manufacturing cost is higher.In a preferred embodiment, successively by stacked to backsheet layer 10, first encapsulating material layer 20, battery lamella 30, second encapsulating material layer 40 and glassy layer 50, lamination after connection convergent belt, obtains the solar module of anti-PID effect after the surrounding frame for installing of solar module.Independently can carry out synchronous with the passivation technology of solar cell for the preparation of second encapsulating material layer 40 with barrier property in preferred embodiment, then by laminating technology, both be encapsulated, which decrease the technology difficulty that solar cell manufactures.While guarantee solar module dependability, do not affect productive temp, can be widely used in actual volume industrial production, effective production control cost.
In the present embodiment, barrier layer 42 is the polypropylene that polyimides or fusing point are all more than or equal to that the polyethylene of 100 DEG C or fusing point are all more than or equal to 100 DEG C.Certainly, barrier layer 42 also can be polyimide derivatives, Kynoar, polyvinylidene fluoride ene derivative, polyacrylonitrile, HPAM Degraded Bacteria, poly-to benzene ethanedioic acid second diester, poly-to benzene ethanedioic acid second diester deriv, polymethyl methacrylate or polymethyl methacrylate derivative.
In the present embodiment, the number of plies on barrier layer 42 is one deck, and the thickness on barrier layer 42 is within the scope of 5 μm ~ 200 μm.Realize the cationic performance of barrier layer 42 barrier metal so further.
In the present embodiment, the number of plies on barrier layer 42 is multilayer, and the thickness on every layer of barrier layer 42 is more than or equal to 2 μm, and the gross thickness of barrier 42 is within the scope of 5 μm ~ 200 μm.Certainly, also encapsulating material layer can be set between adjacent two-layer barrier layer.The cationic performance of barrier layer 42 barrier metal can be realized so better.
In the present embodiment, the thickness of upper encapsulating material layer 41 and the thickness sum of lower encapsulating material layer 43 and the ratio of the thickness of the second encapsulating material layer 40 are within the scope of 0.2 ~ 0.6.The encapsulation of solar module can be ensured like this.
In the present embodiment, battery lamella 30 is monocrystal solar cell, class single crystal battery, polysilicon solar cell or the hetero-junction solar cell based on crystalline silicon.
In the present embodiment, the first encapsulating material layer 20, upper encapsulating material layer 41 and lower encapsulating material layer 43 are EVA(ethylene-vinyl acetate copolymer), PVB(polyvinyl butyral resin), TPU(polyurethane elastomer), PO(thermoplasticity or thermosetting polyolefin) or Inomer(polyethylene-acetic acid esters ionomer).
In the present embodiment, backsheet layer 10 is glass, steel plate, aluminium sheet or fluoropolymer.Fluoropolymer layer comprises PVF(polyvinyl fluoride) layer and PET(PETG) layer, pet layer is arranged between two-layer PVF layer.
The solar module obtained according to above-described embodiment of the application, is exemplified below:
The thickness of example 1: the two EVA layer is 0.5mm, and wherein, the thickness of upper EVA layer and the thickness of lower EVA layer are 0.18mm, and the thickness of polyimide layer is 0.14mm.
The thickness of example 2: the two EVA layer is 0.5mm, and wherein, the thickness of upper EVA layer and the thickness of lower EVA layer are 0.1mm, and the thickness of every strata vinylidene is 0.1mm, also can arrange EVA layer between adjacent two layers Kynoar.
The thickness of example 3: the two EVA layer is 0.5mm, and wherein, the thickness of upper EVA layer and the thickness of lower EVA layer are 0.2mm, and the thickness that fusing point is all more than or equal to the polyethylene layer of 100 DEG C is 0.1mm.
The thickness of example 4: the two EVA layer is 0.5mm, and wherein, the thickness of upper EVA layer is 0.15mm, and the thickness of lower EVA layer is 0.18mm, and the thickness that fusing point is all more than or equal to the polypropylene layer of 100 DEG C is 0.15mm.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a solar module, comprise backsheet layer (10) stacked successively, first encapsulating material layer (20), battery lamella (30), second encapsulating material layer (40) and glassy layer (50), it is characterized in that, described second encapsulating material layer (40) comprises encapsulating material layer (41), lower encapsulating material layer (43) and for stopping that the metal cation of described glassy layer (50) enters the barrier layer (42) of described battery lamella (30), described barrier layer (42) is arranged between described upper encapsulating material layer (41) and described lower encapsulating material layer (43), described barrier layer (42) is all more than or equal to the polypropylene that the polyethylene of 100 DEG C or fusing point are all more than or equal to 100 DEG C for polyimides or fusing point.
2. solar module according to claim 1, is characterized in that, the thickness of described barrier layer (42) is within the scope of 5 μm ~ 200 μm.
3. solar module according to claim 2, is characterized in that, the number of plies of described barrier layer (42) is one deck.
4. solar module according to claim 2, is characterized in that, the number of plies of described barrier layer (42) is multilayer, and the thickness of every layer of described barrier layer (42) is more than or equal to 2 μm.
5. solar module according to claim 1, it is characterized in that, the ratio of the thickness of the thickness of described upper encapsulating material layer (41) and the thickness sum of described lower encapsulating material layer (43) and the second encapsulating material layer (40) is within the scope of 0.2 ~ 0.6.
6. solar module according to claim 1, is characterized in that, described battery lamella (30) is monocrystal solar cell, class single crystal battery, polysilicon solar cell or the hetero-junction solar cell based on crystalline silicon.
7. solar module according to claim 1, it is characterized in that, described first encapsulating material layer (20), upper encapsulating material layer (41) and described lower encapsulating material layer (43) are EVA, PVB, TPU, PO or Inomer.
8. solar module according to claim 1, is characterized in that, described backsheet layer (10) is glass, steel plate or aluminium sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310660784.6A CN103646978B (en) | 2013-12-09 | 2013-12-09 | Solar module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310660784.6A CN103646978B (en) | 2013-12-09 | 2013-12-09 | Solar module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103646978A CN103646978A (en) | 2014-03-19 |
| CN103646978B true CN103646978B (en) | 2016-04-13 |
Family
ID=50252170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310660784.6A Active CN103646978B (en) | 2013-12-09 | 2013-12-09 | Solar module |
Country Status (1)
| Country | Link |
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| CN (1) | CN103646978B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105336805A (en) * | 2014-08-12 | 2016-02-17 | 英属开曼群岛商精曜有限公司 | Back-contact solar module and backplate structure thereof |
| KR101604283B1 (en) * | 2014-12-08 | 2016-03-17 | 엘에스산전 주식회사 | Solar cell module |
| CN105304740A (en) * | 2015-10-12 | 2016-02-03 | 友达光电股份有限公司 | Photovoltaic conversion module |
| CN106469762A (en) * | 2016-12-01 | 2017-03-01 | 梁结平 | A kind of solar module of anti-PID effect |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101410990A (en) * | 2006-04-05 | 2009-04-15 | 株式会社普利司通 | Sealing film for solar cell and solar cell using such sealing film |
| CN103421443A (en) * | 2013-05-14 | 2013-12-04 | 乐凯胶片股份有限公司 | Packaging adhesive film for solar cell module |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110174362A1 (en) * | 2010-01-18 | 2011-07-21 | Applied Materials, Inc. | Manufacture of thin film solar cells with high conversion efficiency |
| JP2013161911A (en) * | 2012-02-03 | 2013-08-19 | Mitsui Chemicals Inc | Light-scattering member |
-
2013
- 2013-12-09 CN CN201310660784.6A patent/CN103646978B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101410990A (en) * | 2006-04-05 | 2009-04-15 | 株式会社普利司通 | Sealing film for solar cell and solar cell using such sealing film |
| CN103421443A (en) * | 2013-05-14 | 2013-12-04 | 乐凯胶片股份有限公司 | Packaging adhesive film for solar cell module |
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| Publication number | Publication date |
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| CN103646978A (en) | 2014-03-19 |
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Effective date of registration: 20160216 Address after: 071000, No. 2, building 50, 101 East sailing Road, Xinshi District, Hebei, Baoding Applicant after: Han Shuai Address before: 071051 Chaoyang North Street, Hebei, Baoding, No. 3399 Applicant before: Yingli Group Ltd. |
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Effective date of registration: 20190830 Address after: 071051 Chaoyang North Street, Hebei, Baoding, No. 3399 Patentee after: Yingli Energy (China) Co., Ltd. Address before: 071000, No. 2, building 50, 101 East sailing Road, Xinshi District, Hebei, Baoding Patentee before: Han Shuai |