CN104425640A - Photovoltaic module - Google Patents
Photovoltaic module Download PDFInfo
- Publication number
- CN104425640A CN104425640A CN201310390617.4A CN201310390617A CN104425640A CN 104425640 A CN104425640 A CN 104425640A CN 201310390617 A CN201310390617 A CN 201310390617A CN 104425640 A CN104425640 A CN 104425640A
- Authority
- CN
- China
- Prior art keywords
- photovoltaic module
- line
- photovoltaic
- solar battery
- encapsulation glue
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005538 encapsulation Methods 0.000 claims description 22
- 239000006117 anti-reflective coating Substances 0.000 claims description 9
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 7
- 238000009413 insulation Methods 0.000 claims description 7
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 7
- 229920002313 fluoropolymer Polymers 0.000 claims description 6
- 239000004811 fluoropolymer Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 239000012528 membrane Substances 0.000 claims description 6
- 239000005341 toughened glass Substances 0.000 claims description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 5
- 229910052710 silicon Inorganic materials 0.000 claims description 5
- 239000010703 silicon Substances 0.000 claims description 5
- 239000002202 Polyethylene glycol Substances 0.000 claims description 4
- 229920001223 polyethylene glycol Polymers 0.000 claims description 4
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 229910021421 monocrystalline silicon Inorganic materials 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims description 3
- 229920000098 polyolefin Polymers 0.000 claims description 3
- 229920005591 polysilicon Polymers 0.000 claims description 3
- 238000005728 strengthening Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 18
- 238000004806 packaging method and process Methods 0.000 abstract description 7
- 230000015556 catabolic process Effects 0.000 abstract description 2
- 238000006731 degradation reaction Methods 0.000 abstract description 2
- 239000012790 adhesive layer Substances 0.000 abstract 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000011734 sodium Substances 0.000 description 3
- 230000003667 anti-reflective effect Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 239000012636 effector Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229920000840 ethylene tetrafluoroethylene copolymer Polymers 0.000 description 2
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 description 2
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 2
- 239000004926 polymethyl methacrylate Substances 0.000 description 2
- 229910001415 sodium ion Inorganic materials 0.000 description 2
- 229910000756 V alloy Inorganic materials 0.000 description 1
- 239000002313 adhesive film Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000013082 photovoltaic technology Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 238000002834 transmittance Methods 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
-
- 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
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention relates to a photovoltaic module, which comprises a photovoltaic back plate, a first packaging adhesive layer, a solar cell, a second packaging adhesive layer and a transparent cover plate which are stacked in sequence, wherein the volume resistivity of the first packaging adhesive layer and the volume resistivity of the second packaging adhesive layer are not less than 1.2*1014omega.cm. According to the photovoltaic module, by arranging the first packaging adhesive layer and the second packaging adhesive layer, which are high in volume resistivity, at two sides of the solar cell, the PID (potential induced degradation) effect can be effectively avoided, and therefore power attenuation cannot be caused even if the reverse bias phenomenon occurs in a photovoltaic module system during the operation of a photovoltaic power station, and the output power and the generating effect of the photovoltaic module are further ensured.
Description
Technical field
The present invention relates to field of photovoltaic technology, especially relate to a kind of photovoltaic module.
Background technology
In recent years, the actual motion experience of some photovoltaic plants shows, the system voltage of photovoltaic generating system exists and has lasting " current potential brings out decay (Potential Induced Degradation; PID) " effect to crystal silicon cell assembly, based on the leakage current that the crystal silicon cell of silk screen printing is caused the loop that photovoltaic component frame is formed by encapsulating material (normally the upper surface of EVA and glass), be considered to the main cause causing above-mentioned effect.The solar cell of traditional structure and photovoltaic module do not possess anti-PID effector function, when particularly PID effect occurs photovoltaic module in hot and humid environment, power attenuation is larger, even reach more than 50% time serious, become one of key factor affecting photovoltaic module quality and performance.
Summary of the invention
Based on this, be necessary to provide a kind of photovoltaic module with anti-PID effect.
A kind of photovoltaic module, comprise the photovoltaic back, the first encapsulation glue-line, solar battery sheet, the second encapsulation glue-line and the transparent cover plate that are cascading, the specific insulation of the first wherein said encapsulation glue-line and described second encapsulation glue-line is not less than 1.2*10
14Ω cm.
Wherein in an embodiment, described photovoltaic back has three-decker, and outermost layer is the Polyethyleneglycol Terephthalate film of fluoropolymer membrane or strengthening, and intermediate layer is Polyethyleneglycol Terephthalate film, and internal layer is fluoropolymer membrane or ethylene-vinyl acetate copolymer film.
Wherein in an embodiment, the material of described first encapsulation glue-line and described second encapsulation glue-line is ethylene-vinyl acetate copolymer or polyolefin.
Wherein in an embodiment, described solar battery sheet is monocrystaline silicon solar cell sheet, polysilicon solar battery slice or quasi-monocrystalline silicon solar battery sheet.
Wherein in an embodiment, the ranges of indices of refraction of described antireflective coating is 2.05 ~ 2.35.
Wherein in an embodiment, the refractive index homogeneity degree percentage of the described solar battery sheet containing described antireflective coating is between-3% ~ 3%.
The toughened glass that wherein in an embodiment, described transparent cover plate is single matte, two matte, one side plate antireflective film or two-sided plating antireflective film, quartz glass or transparent plastic cover plate.
Wherein in an embodiment, described transparent cover plate is for containing Na
2the toughened glass of O, wherein Na
2the percentage composition of O is less than 13.6%.
Above-mentioned photovoltaic module is by arranging the first encapsulation glue-line and the second encapsulation glue-line of high specific insulation in solar battery sheet both sides, the photovoltaic back that the transparent cover plate of low sodium ions content and the back side arrange low water vapor transmittance is set in photovoltaic module front, intercepts metal ion in transparent cover plate and under reverse voltage effect, penetrate packaging adhesive film even if also can reach under hot and humid environment enter the object that solar battery sheet damages its PN junction.Even if thus reverse bias phenomenon appears in photovoltaic plant run duration photovoltaic component system, the generation of photovoltaic module PID effect also effectively can be prevented, and can not cause power attenuation, ensure power output and the generating effect of photovoltaic module further.
Accompanying drawing explanation
Fig. 1 is the decomposing schematic representation of the photovoltaic module of an execution mode.
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.
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 photovoltaic devices 100 of an execution mode comprises photovoltaic back 110, first encapsulation glue-line 120, solar battery sheet 130, second encapsulation glue-line 140 and transparent cover plate 150.Photovoltaic back 110, first encapsulates glue-line 120, solar battery sheet 130, second encapsulates glue-line 140 and transparent cover plate 150 stacks gradually structure by laminating machine through vacuum lamination formation.
Photovoltaic back 100 adopts the material under system voltage with better insulation effect and water vapor rejection effect to make.In the present embodiment, photovoltaic back 100 has three-decker, and outermost layer is the PET material of fluoropolymer membrane or strengthening, plays weatherability effect; Intermediate layer is PET, plays insulation and water vapor rejection effect; Internal layer is fluoropolymer membrane or EVA character material, plays to encapsulate glue-line 120 with first bonding.Be appreciated that, in other embodiments, the structure of photovoltaic back 100 is not limit so, as being double-layer structure or four-layer structure etc., photovoltaic back 100 for four-layer structure can be on photovoltaic back 100 basis of present embodiment three-decker, add one deck aluminum metal layer at outermost layer and intermediate layer, to increase the water oxygen resistant effect of photovoltaic back 100 further.
In the present embodiment, the first encapsulation glue-line 120 and the second encapsulation glue-line 140 are for having ethylene-vinyl acetate copolymer or the polyolefin making of higher volume resistivity.The specific insulation of the first encapsulation glue-line 120 and the second encapsulation glue-line 140 is not less than 1.2*10
14Ω cm.
Solar battery sheet 130 can monocrystaline silicon solar cell sheet or polysilicon solar battery slice or quasi-monocrystalline silicon solar battery sheet.In the present embodiment, the surface of solar battery sheet 130 is provided with antireflective coating.Antireflective coating can be plated by plasma enhanced chemical vapor deposition method (PECVD) and put.The ranges of indices of refraction of antireflective coating is 2.05 ~ 2.35.In addition, by controlling coating process, the antireflective coating on solar battery sheet 130 surface can be made to be dealt into higher density and to ensure uniformity.In the present embodiment, the refractive index homogeneity degree percentage of the solar battery sheet 130 of antireflective coating should be contained between-3% ~ 3%.
Transparent cover plate 150 can be the toughened glass of single matte, two matte, one side coated with antireflection film or two sides coated with antireflection film, quartz glass or plastic cover plate (as ethylene-tetrafluoroethylene copolymer (ETFE), polymethyl methacrylate (PMMA) etc.).The transparent cover plate 150 of present embodiment is the single matte toughened glass containing lower sodium ions content, wherein Na
2the percentage composition of O is less than 13.6%.
Above-mentioned photovoltaic module 100 is by arranging the first encapsulation glue-line 120 and the second encapsulation glue-line 140 of high specific insulation in solar battery sheet 130 both sides, effectively can prevent the generation of PID effect, even if thus ensure to occur that reverse bias phenomenon also can not cause power attenuation in photovoltaic plant run duration photovoltaic component system, further power output and the generating effect ensureing photovoltaic module.
This anti-PID effect type photovoltaic module 100 has excellent anti-PID effector function, (temperature: 0 ~ 90 DEG C, relative humidity: 0 ~ 97%) still have good anti-PID effect under the condition that environmental condition is very harsh.Even if photovoltaic module 100 exist comparatively high-V alloy time, photovoltaic module 100 power attenuation, also far below 5%, can ensure power stage and the gene-ration revenue of whole photovoltaic plant.
The above embodiment only have expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.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 (8)
1. a photovoltaic module, it is characterized in that, comprise the photovoltaic back, the first encapsulation glue-line, solar battery sheet, the second encapsulation glue-line and the transparent cover plate that are cascading, the specific insulation of the first wherein said encapsulation glue-line and described second encapsulation glue-line is not less than 1.2*10
14Ω cm.
2. photovoltaic module as claimed in claim 1, it is characterized in that, described photovoltaic back has three-decker, and outermost layer is the Polyethyleneglycol Terephthalate film of fluoropolymer membrane or strengthening, intermediate layer is Polyethyleneglycol Terephthalate film, and internal layer is fluoropolymer membrane or ethylene-vinyl acetate copolymer film.
3. photovoltaic module as claimed in claim 1, is characterized in that, the material of described first encapsulation glue-line and described second encapsulation glue-line is ethylene-vinyl acetate copolymer or polyolefin.
4. photovoltaic module as claimed in claim 1, it is characterized in that, described solar battery sheet is monocrystaline silicon solar cell sheet, polysilicon solar battery slice or quasi-monocrystalline silicon solar battery sheet.
5. photovoltaic module as claimed in claim 1, it is characterized in that, the ranges of indices of refraction of described antireflective coating is 2.05 ~ 2.35.
6. the photovoltaic module according to any one of claim 1-5, is characterized in that, the refractive index homogeneity degree percentage of the described solar battery sheet containing described antireflective coating is between-3% ~ 3%.
7. photovoltaic module as claimed in claim 1, is characterized in that, described transparent cover plate is the toughened glass of single matte, two matte, one side coated with antireflection film or two sides coated with antireflection film, quartz glass or transparent plastic cover plate.
8. the photovoltaic module as described in claim 1 or 7, is characterized in that, described transparent cover plate is for containing Na
2the toughened glass of O, wherein Na
2the percentage composition of O is less than 13.6%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310390617.4A CN104425640A (en) | 2013-08-30 | 2013-08-30 | Photovoltaic module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310390617.4A CN104425640A (en) | 2013-08-30 | 2013-08-30 | Photovoltaic module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104425640A true CN104425640A (en) | 2015-03-18 |
Family
ID=52974106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310390617.4A Pending CN104425640A (en) | 2013-08-30 | 2013-08-30 | Photovoltaic module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104425640A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105702765A (en) * | 2016-03-23 | 2016-06-22 | 浙江精工能源科技集团有限公司 | Multilayer layered photovoltaic module |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101681946A (en) * | 2007-06-15 | 2010-03-24 | 阿科玛股份有限公司 | photovoltaic modules having a polyvinylidene fluoride backsheet |
| CN201616442U (en) * | 2010-01-27 | 2010-10-27 | 上海海优威电子技术有限公司 | Back panel of solar battery |
| CN101989623A (en) * | 2009-08-07 | 2011-03-23 | 比亚迪股份有限公司 | Solar battery reducing reflection coating and preparation method thereof |
| CN103146315A (en) * | 2013-03-27 | 2013-06-12 | 温州瑞阳光伏材料有限公司 | High-volume resistivity EVA (Ethylene Vinyl-acetate Copolymer) rubber film and preparation process thereof |
| US20130213471A1 (en) * | 2010-11-02 | 2013-08-22 | Mitsui Chemicals, Inc. | Encapsulating material for solar cell and solar cell module |
-
2013
- 2013-08-30 CN CN201310390617.4A patent/CN104425640A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101681946A (en) * | 2007-06-15 | 2010-03-24 | 阿科玛股份有限公司 | photovoltaic modules having a polyvinylidene fluoride backsheet |
| CN101989623A (en) * | 2009-08-07 | 2011-03-23 | 比亚迪股份有限公司 | Solar battery reducing reflection coating and preparation method thereof |
| CN201616442U (en) * | 2010-01-27 | 2010-10-27 | 上海海优威电子技术有限公司 | Back panel of solar battery |
| US20130213471A1 (en) * | 2010-11-02 | 2013-08-22 | Mitsui Chemicals, Inc. | Encapsulating material for solar cell and solar cell module |
| CN103146315A (en) * | 2013-03-27 | 2013-06-12 | 温州瑞阳光伏材料有限公司 | High-volume resistivity EVA (Ethylene Vinyl-acetate Copolymer) rubber film and preparation process thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105702765A (en) * | 2016-03-23 | 2016-06-22 | 浙江精工能源科技集团有限公司 | Multilayer layered photovoltaic module |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150318 |
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| RJ01 | Rejection of invention patent application after publication |