CN212342643U - Encapsulating film for photovoltaic module and photovoltaic module having the same - Google Patents
Encapsulating film for photovoltaic module and photovoltaic module having the same Download PDFInfo
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- CN212342643U CN212342643U CN202020493794.0U CN202020493794U CN212342643U CN 212342643 U CN212342643 U CN 212342643U CN 202020493794 U CN202020493794 U CN 202020493794U CN 212342643 U CN212342643 U CN 212342643U
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- photovoltaic module
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- adhesive film
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- 239000002313 adhesive film Substances 0.000 claims abstract description 70
- 238000004806 packaging method and process Methods 0.000 claims description 33
- 239000008393 encapsulating agent Substances 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 9
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 8
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 8
- 229920000098 polyolefin Polymers 0.000 claims description 8
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 6
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 claims description 6
- -1 polyethylene Polymers 0.000 claims description 6
- 239000004698 Polyethylene Substances 0.000 claims description 5
- 239000006260 foam Substances 0.000 claims description 5
- 229920000573 polyethylene Polymers 0.000 claims description 5
- 239000002861 polymer material Substances 0.000 claims description 5
- 239000004408 titanium dioxide Substances 0.000 claims description 3
- 238000005538 encapsulation Methods 0.000 abstract description 8
- 239000011521 glass Substances 0.000 description 21
- 230000003287 optical effect Effects 0.000 description 9
- 238000003475 lamination Methods 0.000 description 6
- 239000012528 membrane Substances 0.000 description 5
- 230000007774 longterm Effects 0.000 description 4
- 229920000742 Cotton Polymers 0.000 description 3
- LIKMAJRDDDTEIG-UHFFFAOYSA-N 1-hexene Chemical compound CCCCC=C LIKMAJRDDDTEIG-UHFFFAOYSA-N 0.000 description 2
- KWKAKUADMBZCLK-UHFFFAOYSA-N 1-octene Chemical compound CCCCCCC=C KWKAKUADMBZCLK-UHFFFAOYSA-N 0.000 description 2
- WSSSPWUEQFSQQG-UHFFFAOYSA-N 4-methyl-1-pentene Chemical compound CC(C)CC=C WSSSPWUEQFSQQG-UHFFFAOYSA-N 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000005329 float glass Substances 0.000 description 2
- YWAKXRMUMFPDSH-UHFFFAOYSA-N pentene Chemical compound CCCC=C YWAKXRMUMFPDSH-UHFFFAOYSA-N 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 150000001925 cycloalkenes Chemical class 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000001795 light effect Effects 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N n-Octanol Natural products CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000013082 photovoltaic technology Methods 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229920002725 thermoplastic elastomer Polymers 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 239000004711 α-olefin Substances 0.000 description 1
Images
Classifications
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- 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
- Y02E10/52—PV systems with concentrators
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- Photovoltaic Devices (AREA)
Abstract
本实用新型公开了一种用于光伏组件的封装胶膜和具有其的光伏组件，所述用于光伏组件的封装胶膜包括：透明胶膜；网格件，网格件设在透明胶膜上，网格件包括网格框、第一网格条、多个第二网格条和多个第三网格条，网格框位于透明胶膜的边缘，第一网格条和多个第二网格条均与网格框的短边平行且两端分别与网格框的两个长边相连，第一网格条和多个第二网格条沿网格框的长边延伸方向间隔设置，多个第三网格条均与网格框的长边平行且两端分别与网格框的两个短边相连，第一网格条的宽度大于第二网格条的宽度，且第一网格条的宽度大于第三网格条的宽度。根据本实用新型的用于光伏组件的封装胶膜，提高了光线的有效利用率，且可以提高光伏组件的良率。
The utility model discloses an encapsulation adhesive film for photovoltaic components and a photovoltaic component having the same. The encapsulation adhesive film for photovoltaic components comprises: a transparent adhesive film; , the grid part includes a grid frame, a first grid bar, a plurality of second grid bars and a plurality of third grid bars, the grid frame is located at the edge of the transparent film, the first grid bar and a plurality of third grid bars The second grid bars are all parallel to the short side of the grid frame, and the two ends are respectively connected to the two long sides of the grid frame. The first grid bar and a plurality of second grid bars extend along the long sides of the grid frame The directions are arranged at intervals, a plurality of third grid bars are all parallel to the long side of the grid frame and both ends are respectively connected to the two short sides of the grid frame, the width of the first grid bar is greater than the width of the second grid bar , and the width of the first grid bar is greater than the width of the third grid bar. According to the encapsulating adhesive film for photovoltaic modules of the present invention, the effective utilization rate of light is improved, and the yield of photovoltaic modules can be improved.
Description
Technical Field
The utility model belongs to the technical field of the photovoltaic technology and specifically relates to a photovoltaic module who is used for photovoltaic module's encapsulation glued membrane and has it.
Background
Along with the rapid growth of the market demand of the photovoltaic module, users are higher and higher for the photovoltaic module, and the photovoltaic module is required to meet the requirements of various fields and different installation environments while the photovoltaic module is ensured to have higher efficiency. Therefore, double-glass photovoltaic modules are produced at the same time.
In the related art, white glaze grid back plate glass is generally adopted on the back of the double-glass photovoltaic module. However, due to the height difference of the white glaze layer, the grid glass has large warping degree and low strength, and is easy to cause the photovoltaic module to be laminated and cracked, so that the optical utilization rate and yield of the photovoltaic module are low, the manufacturing cost of the photovoltaic module is increased, and the reliability of the photovoltaic module is low.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the utility model is to provide a packaging adhesive film for photovoltaic module, a packaging adhesive film for photovoltaic module can improve photovoltaic module's yield, and can improve photovoltaic module's optical utilization to improve photovoltaic module's reliability.
Another object of the present invention is to provide a photovoltaic module with the above packaging adhesive film.
According to the utility model discloses a packaging adhesive film for photovoltaic module of first aspect embodiment, include: a transparent adhesive film; the grid part is arranged on the transparent adhesive film and comprises a grid frame, a first grid strip, a plurality of second grid strips and a plurality of third grid strips, the grid frame is positioned at the edge of the transparent adhesive film, the first grid strip, the plurality of second grid strips and the plurality of third grid strips are all arranged in the grid frame, the first grid strip and the plurality of second grid strips are all parallel to the short edge of the grid frame, both ends of the first grid strip and the plurality of second grid strips are respectively connected with two long edges of the grid frame, the first grid strip and the plurality of second grid strips are arranged at intervals along the long edge extension direction of the grid frame, both sides of the first grid strip are respectively provided with the plurality of second grid strips, the plurality of third grid strips are all parallel to the long edge of the grid frame, both ends of the third grid strips are respectively connected with two short edges of the grid frame, and the plurality of third grid strips are arranged at intervals along the short edge extension direction of the grid frame, the width of the first grid strip is greater than that of the second grid strip, and the width of the first grid strip is greater than that of the third grid strip.
According to the utility model discloses a positive and reverse side that is used for photovoltaic module's encapsulation glued membrane, establishes on the transparent adhesive film through the net spare that makes including net frame, first net strip, a plurality of second net strips and a plurality of third net strip to make the width of first net strip be greater than the width of second net strip and the width of first net strip be greater than the width of third net strip, first net strip can reflect the incident light of center busbar department and reflection optics back to the battery piece, has improved the effective utilization of light. Moreover, the distance between the grid piece and the cell is shortened, so that the optical utilization rate of the cell gap can be effectively improved, the problems that the white glaze grid glass is large in warping degree, low in strength and prone to causing photovoltaic module lamination cracking, long-term reliability failure and the like can be avoided, and the yield of the photovoltaic module is improved. In addition, when the packaging adhesive film is applied to the photovoltaic module, the photovoltaic module can adopt transparent glass, so that the light utilization rate can be improved, the power and the double-sided rate of the photovoltaic module are further improved, the power gain of the back of the double-glass photovoltaic module is greatly improved, and the cost is reduced.
According to some embodiments of the invention, the first grid strip has a width d1Wherein said d1Satisfies the following conditions: d is not less than 42mm1≤48mm。
According to some embodiments of the invention, the width of one of the second and third grid bars is d2Wherein said d2Satisfies the following conditions: d is not less than 5mm2≤8mm。
According to some embodiments of the invention, the width of the other of the second and third grid bars is d3Wherein said d3Satisfies the following conditions: d is not less than 6mm3≤8mm。
According to some embodiments of the invention, the width of the grid frame is d4Wherein said d4Satisfies the following conditions: d is not less than 10mm4≤12mm。
According to some embodiments of the present invention, the mesh member is a mesh layer provided on one side of the transparent adhesive film in the thickness direction.
According to some embodiments of the utility model, the net spare is inlayed and is established in the transparent adhesive film, just the surface of net spare with in the thickness direction of transparent adhesive film the surface parallel and level of one side.
According to some embodiments of the invention, the mesh is a titanium dioxide piece, a white glaze piece or a white polymer material piece.
According to some embodiments of the present invention, the transparent adhesive film is one or more of ethylene-vinyl acetate, polyolefin material and polyethylene foam.
According to the utility model discloses photovoltaic module of second aspect embodiment includes: a battery string layer including a plurality of battery strings, each of the battery strings including a plurality of battery cells; the front transparent plate is arranged above the battery string layer; the back plate is arranged below the battery string layer; packaging adhesive film, packaging adhesive film is according to the utility model discloses a packaging adhesive film for photovoltaic module of above-mentioned first aspect embodiment, the packaging adhesive film is established battery cluster layer with between the backplate, the net frame covers the edge on battery cluster layer, first net strip covers central busbar, the second net strip with one of them cover adjacent two in the third net strip the clearance between the battery cluster, the second net strip with another cover in the third net strip adjacent two in the battery cluster the clearance between the battery piece.
According to some embodiments of the invention, the width of the first grid bars is less than or equal to the width of the central bus bar; the width of one of the second grid strip and the third grid strip is less than or equal to the width of a gap between two adjacent battery strings; the width of the other one of the second grid strip and the third grid strip is smaller than or equal to the width of a gap between two adjacent battery slices in the battery string.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic view of an encapsulant film for a photovoltaic module according to an embodiment of the present invention;
fig. 2 is an exploded view of a photovoltaic module according to an embodiment of the present invention.
Reference numerals:
100: packaging the adhesive film;
1: a transparent adhesive film; 2: a mesh member; 21: a grid frame;
22: a first grid bar; 23: a second grid bar; 24: a third grid bar;
200: a photovoltaic module;
201: a battery string layer; 2011: a battery string; 20111: a battery piece;
202: a front transparent plate; 203: a back plate; 204: and packaging the adhesive film on the front side.
Detailed Description
Embodiments of the present invention are described in detail below, and the embodiments described with reference to the drawings are exemplary.
An encapsulant film 100 for a photovoltaic module 200 according to an embodiment of the present invention is described below with reference to fig. 1 and 2.
As shown in fig. 1, an encapsulant film 100 for a photovoltaic module 200 according to an embodiment of the present invention includes a transparent adhesive film 1 and a grid member 2.
Specifically, the grid member 2 is disposed on the transparent adhesive film 1, the grid member 2 includes a grid frame 21, a first grid bar 22, a plurality of second grid bars 23 and a plurality of third grid bars 24, the grid frame 21 is disposed at an edge of the transparent adhesive film 1, the first grid bar 22, the plurality of second grid bars 23 and the plurality of third grid bars 24 are all disposed in the grid frame 21, the first grid bar 22 and the plurality of second grid bars 23 are both parallel to a short side of the grid frame 21 and both ends thereof are respectively connected to two long sides of the grid frame 21, the first grid bar 22 and the plurality of second grid bars 23 are disposed at intervals along a long side extending direction of the grid frame 21, both sides of the first grid bar 22 are respectively provided with the plurality of second grid bars 23, the plurality of third grid bars 24 are both parallel to a long side of the grid frame 21 and both ends thereof are respectively connected to two short sides of the grid frame 21, the plurality of third grid bars 24 are disposed at intervals along the short side extending direction of the grid frame 21, the width of the first lattice bars 22 is greater than the width of the second lattice bars 23, and the width of the first lattice bars 22 is greater than the width of the third lattice bars 24. In the description of the present invention, "a plurality" means two or more.
For example, in the example of fig. 1, the grid box 21 may be rectangular. The first lattice bar 22, the plurality of second lattice bars 23, and the plurality of third lattice bars 24 are provided in the lattice frame 21. The first grid bars 22 and the plurality of second grid bars 23 are parallel to the short sides of the grid frame 21, and both ends of the first grid bars 22 and both ends of the plurality of second grid bars 23 are connected to both long sides of the grid frame 21. The first lattice bars 22 are positioned between the plurality of second lattice bars 23. The third grid bars 24 are all parallel to the long sides of the grid frame 21, and both ends of the third grid bars 24 are connected to the two short sides of the grid frame 21, respectively.
Here, the plurality of second grid bars 23 may cover a gap between two adjacent battery sheets 20111 in the battery string 2011, and correspondingly, the plurality of third grid bars 24 may cover a gap between two adjacent battery strings 2011. Of course, the plurality of second grid bars 23 may cover the gap between two adjacent battery strings 2011, and the plurality of third grid bars 24 may cover the gap between two adjacent battery sheets 20111 in the battery strings 2011, which is not limited herein.
The first grid bars 22 may cover the central bus bar of the photovoltaic module 200. Therefore, by making the width of the first grid bars 22 greater than the width of the second grid bars 23 and making the width of the first grid bars 22 greater than the width of the third grid bars 24, the first grid bars 22 can reflect the incident light and the reflection optics at the central bus bars back to the front and back of the battery sheet 20111, thereby improving the effective utilization rate of the light. Moreover, compared with the existing grid glass, the distance between the grid piece 2 and the cell 20111 is shortened, so that the reflection path of incident light is shorter, the optical utilization rate of the cell gap can be effectively improved, and the problems that the white glaze grid glass is large in warping degree, low in strength, easy to cause photovoltaic module 200 lamination cracking, long-term reliability failure and the like can be avoided. In addition, when the encapsulation adhesive film 100 is applied to the photovoltaic module 200, the photovoltaic module 200 can adopt transparent glass such as coated glass or float glass to replace the original white glaze grid glass, so that the light utilization rate can be improved, the power and double-sided rate of the photovoltaic module 200 are further improved, and the power gain of the back of the dual-glass photovoltaic module 200 is greatly improved.
According to the utility model discloses a encapsulation glued membrane 100 for photovoltaic module 200, establish on transparent adhesive film 1 through making including net frame 21, first gridline 22, the grid spare 2 of a plurality of second gridlines 23 and a plurality of third gridlines 24, and make the width of first gridline 22 be greater than the width of second gridline 23 and the width of first gridline 22 be greater than the width of third gridline 24, first gridline 22 can reflect the incident light and the reflection optics of central busbar department back to battery piece 20111's front and reverse side, the effective utilization of light has been improved. Moreover, by the arrangement, the distance between the grid part 2 and the battery sheet 20111 is shortened, so that the optical utilization rate of the battery sheet gap can be effectively improved, the problems that the white glaze grid glass is large in warping degree, low in strength and prone to causing the photovoltaic module 200 lamination crack and long-term reliability failure and the like can be avoided, and the yield of the photovoltaic module 200 is improved. In addition, when the packaging adhesive film 100 is applied to the photovoltaic module 200, the photovoltaic module 200 can be made of transparent glass, so that the light utilization rate can be improved, the power and the double-sided rate of the photovoltaic module 200 are further improved, the power gain of the back of the dual-glass photovoltaic module 200 is greatly improved, and the cost is reduced.
In some embodiments of the present invention, referring to fig. 1, the first grid bars 22 have a width d1Wherein d is1Satisfies the following conditions: d is not less than 42mm1Less than or equal to 48 mm. Specifically, for example, d1May be 42mm, 46mm, etc. When d is1If the width is less than 42mm, the width of the first grid strip 22 is too small, which may affect the optical utilization rate; when d is1If the width of the first grid bars 22 is larger than 48mm, the battery sheet 20111 may be blocked. Thereby, by making the width d of the first lattice bars 221Satisfies the following conditions: d is not less than 42mm1Less than or equal to 48mm, the optical utilization rate can be effectively improved, and the first grid strip 22 can be prevented from shielding the battery piece 20111.
In some embodiments of the present invention, in conjunction with fig. 1, one of the second grid bars 23 and the third grid bars 24 has a width d2Wherein d is2Satisfies the following conditions: d is not less than 5mm2Less than or equal to 8 mm. Specifically, for example, d2May be 5mm, 6mm or 8mm, etc.Thereby, by making the width d of one of the second lattice bar 23 and the third lattice bar 242Satisfies the following conditions: d is not less than 5mm2Less than or equal to 8mm, the optical utilization rate can be effectively improved, and the battery sheet 20111 can be prevented from being shielded by one of the second grid strips 23 and the third grid strips 24.
In some embodiments of the present invention, referring to fig. 1, the width of the other of the second and third grid bars 23 and 24 is d3Wherein d is3Satisfies the following conditions: d is not less than 6mm3Less than or equal to 8 mm. E.g. d3May be 7mm or 8mm, etc. In this way, while the optical utilization rate is improved, the battery sheet 20111 is prevented from being shielded by the other of the second grid bar 23 and the third grid bar 24.
In some embodiments of the present invention, in conjunction with fig. 1, the width of the grid frame 21 is d4Wherein d is4Satisfies the following conditions: d is not less than 10mm4Less than or equal to 12 mm. Thereby, the width d of the grid frame 21 is set4Satisfies the following conditions: d is not less than 10mm412mm, can further improve the optics utilization ratio in clearance, and guarantee can not cause the sheltering from to battery piece 20111.
In some embodiments of the present invention, referring to fig. 2, the mesh member 2 is a mesh layer provided on one side in the thickness direction of the transparent adhesive film 1. So set up, simple structure, convenient processing, and the thickness of net layer is thinner, can effectively avoid appearing the problem of photovoltaic module 200 lamination split, and the reliability is higher.
Alternatively, referring to fig. 2, the mesh member 2 is embedded in the transparent adhesive film 1, and the surface of the mesh member 2 is flush with the surface of the transparent adhesive film 1 on the above-mentioned side in the thickness direction. For example, a white polymer material may be compounded in a transparent polymer material using a mesh as a template. Therefore, the thickness difference does not exist between the grid part 2 and the transparent adhesive film 1, the problem of lamination and splitting of the photovoltaic module 200 can be effectively avoided, and the yield of the photovoltaic module 200 can be improved.
Of course, the present invention is not limited thereto, and the mesh member 2 may be printed on the above-mentioned one side surface of the transparent adhesive film 1. It should be understood by those skilled in the art that the manner of preparing the mesh member 2 is not limited in any way as long as the mesh member 2 is ensured to be a mesh layer provided on one side in the thickness direction of the transparent adhesive film 1.
Alternatively, the mesh member 2 may be a titanium dioxide member, a white glaze member, or a white polymer material member. So set up, can have white net on making transparent adhesive film 1 to can improve light utilization ratio, improve photovoltaic module 200's power and two-sided rate, and can improve the power gain at the two-glass photovoltaic module 200 back. Of course, the grid member 2 may be made of other materials like white glaze, and is not limited herein.
Optionally, the transparent adhesive film 1 is one or more of ethylene-vinyl acetate, polyolefin materials and polyethylene foam cotton. Wherein the ethylene-vinyl acetate copolymer is a general high molecular polymer, the English name is EVA for short, the code is 1314, and the molecular formula is (C2H4) x. (C4H6O2) y; the polyolefin material is a polymer of olefin, and is a generic name of thermoplastic resins obtained by singly polymerizing or copolymerizing alpha-olefin such as ethylene, propylene, 1-butene, 1-pentene, 1-hexene, 1-octene, 4-methyl-1-pentene and the like and certain cycloolefins, for example, POE (ethylene-octene copolymer, a novel polyolefin thermoplastic elastomer which is developed by taking metallocene as a catalyst and has narrow relative molecular mass distribution, narrow comonomer distribution and controllable structure) is one of the polyolefin materials; the polyethylene foam cotton is a non-crosslinked closed-cell structure, is also called EPE pearl cotton, is a novel environment-friendly packaging material, and is formed by countless independent bubbles generated by physically foaming low-density polyethylene resin. Therefore, when the transparent adhesive film 1 is ethylene-vinyl acetate, the ethylene-vinyl acetate has low melting point, good fluidity, high transparency and mature laminating process; when the transparent adhesive film 1 is made of polyolefin materials such as POE, the transparent adhesive film 1 has low moisture permeability and high volume resistivity, so that the safety and long-term aging resistance of the photovoltaic module 200 in operation in a high-temperature and high-humidity environment are ensured, and the photovoltaic module 200 can be used for a long time. Of course, the transparent adhesive film 1 may be any combination of ethylene-vinyl acetate, polyolefin material and polyethylene foam, but is not limited to one of them.
As shown in fig. 2, a photovoltaic module 200 according to an embodiment of the present invention includes a cell string layer 201, a front transparent plate 202, a back plate 203, and an encapsulant film 100.
Specifically, the battery string layer 201 includes a plurality of battery strings 2011, and each battery string 2011 includes a plurality of battery tabs 20111. For example, six battery strings 2011 and one hundred and forty-four battery slices 20111 are shown in the example of fig. 1 and 2 for illustrative purposes, but after reading the technical solution of the present application, it is obvious to understand that the solution is applied to other numbers of battery strings 2011 and battery slices 20111, which also falls within the protection scope of the present invention.
The battery sheet 20111 may be cut from a complete battery sheet (not shown), for example, a seventy-two complete battery sheet type shown in fig. 1 and 2. In this version, the width d of the first grid bars 22146mm, the length of the first grid bars 22 is 1042 mm; a width d of one of the second and third lattice bars 23 and 242May be 5mm, 6mm or 8 mm; the width d of the other of the second and third grid bars 23, 243May be 7mm or 8 mm; width d of grid frame 214Is 12 mm.
A front transparent plate 202 is provided above the cell string layer 201. The back sheet 203 is disposed below the battery string layer 201. The packaging adhesive film 100 is the packaging adhesive film 100 for the photovoltaic module 200 according to the present invention, the packaging adhesive film 100 is disposed between the battery string layer 201 and the back plate 203, the grid frame 21 covers the edge of the battery string layer 201, the first grid strip 22 covers the central bus bar (not shown), one of the second grid strip 23 and the third grid strip 24 covers the gap between the two adjacent battery strings 2011, and the other of the second grid strip 23 and the third grid strip 24 covers the gap between the two adjacent battery sheets 20111 in the battery string 2011.
For example, in the example of fig. 2, the packaging adhesive film 100 is a back-side packaging adhesive film. The photovoltaic module 200 is composed of a front transparent plate 202, a front packaging adhesive film 204, a cell string layer 201, a packaging adhesive film 100 and a back plate 203 from top to bottom. When the photovoltaic module 200 is manufactured, the front transparent plate 202, the front packaging adhesive film 204, the battery string layer 201, the packaging adhesive film 100 and the back plate 203 are sequentially placed to complete preparation work before lamination of the double-glass photovoltaic module 200. Then, after the laminated five-layer structure including the front transparent plate 202, the front packaging adhesive film 204, the battery string layer 201, the packaging adhesive film 100 and the back plate 203 is vacuumized and heat laminated, the front packaging adhesive film 204 and the back packaging adhesive film 100 are cross-linked and cured to protect the battery string layer 201, and finally, the five-layer structure (namely, the front transparent plate 202, the front packaging adhesive film 204, the battery string layer 201, the packaging adhesive film 100 and the back plate 203) is firmly bonded, and the photovoltaic module 200 is manufactured by additionally installing an aluminum alloy frame (not shown in the figure), a junction box (not shown in the figure) and sealing with silica gel.
According to the utility model discloses photovoltaic module 200, through adopting above-mentioned encapsulation glued membrane 100, encapsulation glued membrane 100 is nearer with battery piece 20111's distance, and reflection of light effect is better, is favorable to improving photovoltaic module 200's positive output. Moreover, the packaging adhesive film 100 provided in this way brings more choices for the backplane glass, and the photovoltaic module 200 can adopt transparent glass such as coated glass or float glass to replace the original white glaze grid glass, so as to improve the power and double-sided rate of the photovoltaic module 200.
In some embodiments of the present invention, the width of the first grid bars 22 is less than or equal to the width of the center bus bar. One of the second grid bar 23 and the third grid bar 24 has a width equal to or less than a width of a gap between two adjacent cell strings 2011. The width of the other of the second grid bar 23 and the third grid bar 24 is less than or equal to the width of the gap between two adjacent battery pieces 20111 in the battery string 2011. Therefore, the first grid strip 22, the second grid strip 23 and the third grid strip 24 arranged in this way can avoid shielding the cell 20111, thereby ensuring that the photovoltaic module 200 has high output power.
Other constructions and operations of the photovoltaic module 200 according to embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
In the description of the present invention, "the first feature", "the second feature", and "the third feature" may include one or more of the features.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (11)
1. An encapsulant film for a photovoltaic module, comprising:
a transparent adhesive film;
the grid part is arranged on the transparent adhesive film and comprises a grid frame, a first grid strip, a plurality of second grid strips and a plurality of third grid strips, the grid frame is positioned at the edge of the transparent adhesive film, the first grid strip, the plurality of second grid strips and the plurality of third grid strips are all arranged in the grid frame, the first grid strip and the plurality of second grid strips are all parallel to the short edge of the grid frame, both ends of the first grid strip and the plurality of second grid strips are respectively connected with two long edges of the grid frame, the first grid strip and the plurality of second grid strips are arranged at intervals along the long edge extension direction of the grid frame, both sides of the first grid strip are respectively provided with the plurality of second grid strips, the plurality of third grid strips are all parallel to the long edge of the grid frame, both ends of the third grid strips are respectively connected with two short edges of the grid frame, and the plurality of third grid strips are arranged at intervals along the short edge extension direction of the grid frame, the width of the first grid strip is greater than that of the second grid strip, and the width of the first grid strip is greater than that of the third grid strip.
2. The encapsulant film for photovoltaic module as claimed in claim 1, wherein the first grid strip has a width d1Wherein said d1Satisfies the following conditions: d is not less than 42mm1≤48mm。
3. The encapsulant film for photovoltaic module as claimed in claim 1, wherein one of the second and third grid strips has a width d2, wherein d2 satisfies: d2 is more than or equal to 5mm and less than or equal to 8 mm.
4. The encapsulant film for photovoltaic module as claimed in claim 1, wherein the width of the other of the second and third grid bars is d3, wherein d3 satisfies: d3 is more than or equal to 6mm and less than or equal to 8 mm.
5. The encapsulant film for photovoltaic module as claimed in claim 1, wherein the grid frame has a width d4, wherein d4 satisfies: d4 is more than or equal to 10mm and less than or equal to 12 mm.
6. The encapsulant film for photovoltaic module as claimed in any one of claims 1 to 5, wherein the mesh member is a mesh layer provided on one side in the thickness direction of the transparent adhesive film.
7. The packaging adhesive film for a photovoltaic module according to claim 6, wherein the mesh member is embedded in the transparent adhesive film, and a surface of the mesh member is flush with a surface of the one side in a thickness direction of the transparent adhesive film.
8. The encapsulant film for photovoltaic modules according to any one of claims 1 to 5, wherein the mesh is a titanium dioxide piece, a white glaze piece or a white polymer material piece.
9. The packaging adhesive film for a photovoltaic module according to any one of claims 1 to 5, wherein the transparent adhesive film is one of ethylene-vinyl acetate, polyolefin material and polyethylene foam.
10. A photovoltaic module, comprising:
a battery string layer including a plurality of battery strings, each of the battery strings including a plurality of battery cells;
the front transparent plate is arranged above the battery string layer;
the back plate is arranged below the battery string layer;
the packaging adhesive film for the photovoltaic module is according to any one of claims 1 to 9, the packaging adhesive film is arranged between the battery string layer and the back plate, the grid frame covers the edge of the battery string layer, the first grid strip covers the central bus bar, one of the second grid strip and the third grid strip covers the gap between two adjacent battery strings, and the other of the second grid strip and the third grid strip covers the gap between two adjacent battery sheets in the battery string.
11. The photovoltaic module of claim 10, wherein the first grid bars have a width that is less than or equal to a width of the central bus bar;
the width of one of the second grid strip and the third grid strip is less than or equal to the width of a gap between two adjacent battery strings;
the width of the other one of the second grid strip and the third grid strip is smaller than or equal to the width of a gap between two adjacent battery slices in the battery string.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020493794.0U CN212342643U (en) | 2020-04-07 | 2020-04-07 | Encapsulating film for photovoltaic module and photovoltaic module having the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020493794.0U CN212342643U (en) | 2020-04-07 | 2020-04-07 | Encapsulating film for photovoltaic module and photovoltaic module having the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212342643U true CN212342643U (en) | 2021-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020493794.0U Active CN212342643U (en) | 2020-04-07 | 2020-04-07 | Encapsulating film for photovoltaic module and photovoltaic module having the same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212342643U (en) |
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2020
- 2020-04-07 CN CN202020493794.0U patent/CN212342643U/en active Active
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Address after: No. 199, deer mountain road, Suzhou high tech Zone, Jiangsu Province Patentee after: Atlas sunshine Power Group Co.,Ltd. Patentee after: Changshu Artes Sunshine Power Technology Co.,Ltd. Patentee after: CSI Cells Co.,Ltd. Address before: No. 199, deer mountain road, Suzhou high tech Zone, Jiangsu Province Patentee before: CSI SOLAR POWER GROUP Co.,Ltd. Patentee before: Changshu Artes Sunshine Power Technology Co.,Ltd. Patentee before: CSI Cells Co.,Ltd. |