CN111403526A - Polymer film with lead wire and method for manufacturing polymer film with lead wire - Google Patents
Polymer film with lead wire and method for manufacturing polymer film with lead wire Download PDFInfo
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- CN111403526A CN111403526A CN201811628455.2A CN201811628455A CN111403526A CN 111403526 A CN111403526 A CN 111403526A CN 201811628455 A CN201811628455 A CN 201811628455A CN 111403526 A CN111403526 A CN 111403526A
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- 229920006254 polymer film Polymers 0.000 title claims abstract description 130
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims description 12
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 title description 7
- 238000005520 cutting process Methods 0.000 claims abstract description 29
- 239000010410 layer Substances 0.000 claims description 9
- 229920005989 resin Polymers 0.000 claims description 8
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- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 6
- 229910052709 silver Inorganic materials 0.000 claims description 6
- 239000004332 silver Substances 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 3
- 239000012790 adhesive layer Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 229920002492 poly(sulfone) Polymers 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- 239000011701 zinc Substances 0.000 claims description 3
- 229910000570 Cupronickel Inorganic materials 0.000 claims description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 2
- 229910001297 Zn alloy Inorganic materials 0.000 claims description 2
- 229910052787 antimony Inorganic materials 0.000 claims description 2
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 claims description 2
- 229910052797 bismuth Inorganic materials 0.000 claims description 2
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims description 2
- 229910052793 cadmium Inorganic materials 0.000 claims description 2
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 claims description 2
- 229920002301 cellulose acetate Polymers 0.000 claims description 2
- YOCUPQPZWBBYIX-UHFFFAOYSA-N copper nickel Chemical compound [Ni].[Cu] YOCUPQPZWBBYIX-UHFFFAOYSA-N 0.000 claims description 2
- TVZPLCNGKSPOJA-UHFFFAOYSA-N copper zinc Chemical compound [Cu].[Zn] TVZPLCNGKSPOJA-UHFFFAOYSA-N 0.000 claims description 2
- 238000007731 hot pressing Methods 0.000 claims description 2
- 229910052738 indium Inorganic materials 0.000 claims description 2
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 claims description 2
- 229920006122 polyamide resin Polymers 0.000 claims description 2
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- 229910052718 tin Inorganic materials 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims 1
- 239000002184 metal Substances 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 abstract description 15
- 210000004027 cell Anatomy 0.000 description 43
- 210000005056 cell body Anatomy 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
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- 239000012634 fragment Substances 0.000 description 4
- 238000010248 power generation Methods 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
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- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
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- 229920001187 thermosetting polymer Polymers 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
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- IHQKEDIOMGYHEB-UHFFFAOYSA-M sodium dimethylarsinate Chemical class [Na+].C[As](C)([O-])=O IHQKEDIOMGYHEB-UHFFFAOYSA-M 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/05—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells
- H01L31/0504—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module
- H01L31/0508—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module the interconnection means having a particular shape
-
- 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
- H01L31/05—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells
- H01L31/0504—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module
- H01L31/0512—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module made of a particular material or composition of materials
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Sustainable Development (AREA)
- 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 application discloses a polymer film with leads and a manufacturing method of the polymer film with the leads, the polymer film comprises a polymer film body and the leads, the polymer film body is fixedly connected with the leads, a starting shaft is arranged on the polymer film body and is parallel to any long edge of the polymer film body, the leads are radially arranged from the starting shaft to at least one long edge of the polymer film body, the leads are arranged on the polymer film body, a cutting area is divided on the polymer film body, the cutting area is provided with the starting shaft, the starting shaft is parallel to any long edge of the cutting area, and the leads are radially arranged from the starting shaft to at least one long edge of the cutting area; embedding the wire in the polymer film body; the polymer film body is cut according to the cutting area, two adjacent solar cells are convenient to connect, the length of the lead can be reduced, the resistance is reduced, the transmission distance is reduced, and the lead is convenient to arrange and position.
Description
Technical Field
The invention relates to the field of photovoltaic power generation, in particular to the field of solar cells, and particularly relates to a polymer film with leads and a manufacturing method of the polymer film with the leads.
Background
At present, with the gradual depletion of fossil energy, solar cells are increasingly widely used as a new energy alternative. A solar cell is a device that converts solar energy into electrical energy. The solar cell generates current carriers by utilizing a photovoltaic principle, and then the current carriers are led out by using the electrodes, so that the electric energy is effectively utilized.
The interconnection of the solar cells is used as an important ring of photovoltaic solar power generation, and the technical scheme of the interconnection of the solar cells has important influence on the photovoltaic power generation performance. The laminated cell interconnection technology, also called as the shingle technology, is a good solution for realizing efficient interconnection of cells. In the laminated interconnection structure, the battery pieces are connected in an overlapped mode from head to tail, gaps in the traditional battery piece arrangement interconnection structure are greatly reduced, more solar battery units can be arranged in unit area, and the effective sunlight utilization rate is improved. In the application process of the laminated solar cell, the internal resistance of the interconnection structure of the laminated solar cell is overlarge, so that the output power of electric energy is influenced, in addition, the laminated solar cell is prepared by using a main-grid-free technology, so that the problems can be solved to a certain extent, but a common conducting wire cannot completely play a role in conducting, and is difficult to accurately position and arrange in the preparation process.
Disclosure of Invention
In view of the above-mentioned drawbacks and deficiencies of the prior art, it would be desirable to provide a polymer film with leads and a method of manufacturing a polymer film with leads that facilitates alignment and positioning.
In a first aspect, the polymer film with the lead comprises a polymer film body and the lead, wherein the polymer film body is fixedly connected with the lead, the polymer film body is provided with a starting shaft, the starting shaft is parallel to any long side of the polymer film body, and the lead is radially arranged from the starting shaft to at least one long side of the polymer film body.
In a second aspect, the present invention provides a method for manufacturing a polymer film provided with a conductive wire, comprising the steps of:
arranging wires on the polymer film body, dividing a cutting area on the polymer film body, wherein the cutting area is provided with an initial shaft, the initial shaft is parallel to any long side of the cutting area, and the wires are radially arranged from the initial shaft to at least one long side of the cutting area;
embedding the wire in the polymer film body;
and cutting the polymer film body according to the cutting area.
According to the technical scheme that this application embodiment provided, through inlaying the wire in the polymer film body, fix the position of wire, be convenient for arrange and fix a position the wire, the wire is radially arranged from an initial axial at least long limit of tailorring the region, be convenient for connect two adjacent solar wafer, can reduce wire length, reduce resistance, reduce transmission distance, can solve current connection structure wire resistance big, transmission distance is long, be difficult to the problem of location.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
fig. 1 is a schematic structural view of a polymer film provided with a conductive wire according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a polymer film provided with conductive wires according to an embodiment of the present invention;
FIG. 3 is a schematic structural view of a polymer film provided with conductive wires according to an embodiment of the present invention;
FIG. 4 is a schematic structural view of a polymer film provided with conductive wires according to an embodiment of the present invention;
FIG. 5 is a schematic structural view of a polymer film provided with conductive wires according to an embodiment of the present invention;
FIG. 6 is a schematic structural view of a polymer film provided with conductive wires according to an embodiment of the present invention;
FIG. 7 is a schematic structural view of a polymer film provided with conductive wires according to an embodiment of the present invention;
FIG. 8 is a schematic structural view of a polymer film provided with conductive wires according to an embodiment of the present invention;
FIG. 9 is a schematic structural view of a polymer film provided with conductive wires according to an embodiment of the present invention;
fig. 10 is a schematic structural view of a polymer film provided with a conductive wire according to an embodiment of the present invention.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1 to 10, one embodiment of the present invention is a polymer film with conductive lines, including a polymer film body 10 and conductive lines 20, wherein the polymer film body 10 is fixedly connected to the conductive lines 20, the polymer film body 10 is provided with an initial axis, the initial axis is parallel to any long side of the polymer film body 10, and the conductive lines 20 are radially arranged from the initial axis to at least one long side of the polymer film body 10.
In the embodiment of the invention, the electrode grid lines of two adjacent solar cells are connected through the conducting wire, and other devices for connecting electrodes, such as main grids, are not needed to be arranged on the front surface of the cell body, so that the use amount of noble metals, such as silver, can be reduced, and the cost is reduced. Compared with the conventional electrode, the cross section of the lead is a relatively optimized interface, the maximum effect of current transmission can be achieved, and the number of the leads can be designed according to different production requirements. When the two solar cells are connected, the two solar cells are electrically connected with the plurality of wires, so that the resistance of the interconnection structure can be effectively reduced, and the loss caused by the resistance of the interconnection structure is reduced.
The wire can reflect the sunlight of incidenting into the wire to the surface of cell body again, improves the rate of utilization of solar wafer light, has reduced the influence that the electrode shading caused. The wire diameter is 50-200 μm, wherein the wire diameter may be, but not exclusively, 50, 100, 150, 200 μm.
The wire is radial to at least one long limit of polymer membrane body from the initial axle respectively and arranges, and that is the wire is close to initial axle more promptly, and the distance between the adjacent wire can be littleer, and the wire can be compacter, sets up the wire into radially, can optimize current transmission direction, reduces transmission path and internal damage to improve solar wafer's photoelectric conversion efficiency. The solar cell plates with larger width can be used for laminating, so that the cutting times of the whole solar cell plate can be reduced, the process connection times are reduced, and the mechanical damage and the fragment rate caused by cutting the whole solar cell plate are reduced.
The battery body is formed by cutting the whole solar cell panel, the whole solar cell panel can be cut along the direction parallel to the wide edge, and the battery body can be one half, one third, one fourth, one fifth or one sixth of the whole solar cell panel.
The polymer film body can effectively reduce rigid contact in the use process of the solar cell, reduce the generation of fragments and cracks, and is also favorable for filling gaps at various positions and reducing the generation of poor cavities. The polymer film body may be a single layer polymer film or a multilayer polymer film.
Referring to fig. 1-3, further, the starting axis is either long side of the polymer film body 10.
In the embodiment of the invention, the starting shaft is any long side of the polymer film body, namely, the conducting wires are radially arranged from one long side to the other long side of the polymer film body, so that the single-sided electrode grid line is suitable for being connected, the current transmission direction can be optimized, the transmission path and internal damage are reduced, and the photoelectric conversion efficiency of the solar cell is improved.
Referring to fig. 5 and 7, further, the starting axis is the axis of symmetry of the polymer film body 10.
In the embodiment of the invention, the starting axis is a symmetry axis of the polymer film body, namely, the wires are radially arranged from the starting axis to the two long sides of the polymer film body, the condition is suitable for interconnection of the double-sided electrode grid lines, generally, the solar cell panels needing to be connected have the same specification so as to be convenient for field installation and maintenance, the current transmission direction can be optimized, the transmission path and internal damage are reduced, and the photoelectric conversion efficiency of the solar cell is improved.
Referring to fig. 8-10, further, the leads 20 are at least partially exposed from at least one side of the polymer film body 10.
In the embodiment of the invention, the lead is at least partially exposed out of at least one side face of the polymer film body, so that the lead is convenient to contact with the electrode grid line, the electric energy converted inside the solar cell sheet can be led out by the lead, and the electric conductivity of the lead is ensured.
Further, the side of the polymer film body 10 exposed to the lead 20 is provided with an adhesive layer.
In the embodiment of the invention, the adhesive layer is arranged on one side of the polymer film body, which is fixed with the lead, so that the lead and the polymer film body can be conveniently fixed when the lead is processed, and the polymer film body and the solar cell can be conveniently fixed when the lead and the solar cell are fixed, thereby fixing the lead, improving the processing accuracy and reducing the processing difficulty.
Referring to fig. 4 and 6, further, the polymer film body 10 is provided with through holes 11, and the through holes 11 are disposed between the wires 20 and/or between the wires 20 and the broad sides of the polymer film body 10.
In the embodiment of the invention, the polymer film body is provided with the through holes, the through holes are arranged between the leads and/or between the leads and the wide edges of the polymer film body, and the through holes can increase the transmittance of sunlight, improve the power generation efficiency of the solar cell, reduce the use of the polymer film body and reduce the production cost.
Further, the thickness of the polymer film body 10 is 5 to 200 μm.
In the embodiment of the invention, the thickness of the polymer film body is 5-200 μm, and the reasonable design of the thickness of the polymer film body can ensure the strength of the polymer film body, namely ensure that the polymer film body can fix a lead, and simultaneously, the production and manufacturing cost can be reduced, thereby facilitating the production, the manufacturing and the later maintenance.
Further, the cross-section of the wire 20 is circular, and the diameter of the wire 20 is 50 to 500 μm.
In the embodiment of the invention, the cross section of the lead is circular, and is a relatively optimized interface compared with the conventional electrode, so that the maximum effect of current transmission can be achieved. The diameter of reasonable setting wire can compromise reduction in production manufacturing cost when guaranteeing the electric conductivity ability of wire. According to different conductive transmission requirements, the cross section of the lead can be fully selected, and the more preferable scheme has the advantages of larger circular cross section and smaller shading, and is extremely suitable for industrial application of solar cells.
Further, the exterior of the wire 20 is partially or entirely coated with a conductive layer 21.
Further, the melting point of the conductive layer 21 is less than 240 ℃.
In the embodiment of the invention, the conducting wire is coated with the conducting layer with the low melting point, and the conducting layer is used as a connecting agent in the subsequent connection with the solar cell, so that the connection in the subsequent process is more convenient, the process steps in the connection of the conducting wire and the electrode grid line can be greatly reduced, the step of coating the conducting connecting agent on the surface of the cell is reduced, the defects caused by coating the conducting connecting agent are also reduced, and the yield of the solar cell is improved.
The conducting layer is any one or combination of more of conducting resin, indium, antimony, tin, bismuth, lead, silver, cadmium or zinc. The conductive resin includes a polymer matrix and conductive particles, the polymer matrix of the conductive resin includes a thermosetting resin or a thermoplastic resin, the thermosetting resin or the thermoplastic resin includes: any one or combination of more of epoxy resin, silicone resin, polyimide resin, phenolic resin, polyurethane, acrylic resin, polyolefin, polyamide, polyphenylene oxide, fluororesin, polymethyl methacrylate, polysulfone, or polyester. The conductive particles of the conductive resin include: any one or more of gold, silver, copper, aluminum, zinc, nickel and graphite, and the conductive particles are granular or flaky.
The wire is made of copper, aluminum, silver, gold, copper-clad aluminum, copper-nickel alloy or copper-zinc alloy. The material of the polymer film body is cellulose acetate, fluororesin, polysulfone resin, polyester resin, polyamide resin, polyurethane resin or polyolefin resin.
Another embodiment of the present invention is a method for manufacturing a polymer film provided with a conductive wire, comprising the steps of:
arranging the leads 20 on the polymer film body 10, dividing a cutting area on the polymer film body 10, wherein the cutting area is provided with an initial shaft, the initial shaft is parallel to any long side of the cutting area, and the leads are radially arranged from the initial shaft to at least one long side of the cutting area;
embedding the conductive wires 20 in the polymer film body 10;
the polymer film body 10 is cut according to the cutting area.
In the embodiment of the invention, the conducting wires are firstly distributed on the polymer film body, then the conducting wires are embedded in the polymer film body, and then the polymer film body is cut according to the cutting area, so that the polymer film provided with the conducting wires is processed.
The electrode grid lines of two adjacent solar cells are connected through the conducting wires, and devices for connecting electrodes such as other main grids do not need to be arranged on the front face of the cell body, so that the use amount of precious metals such as silver can be reduced, and the cost is reduced. Compared with the conventional electrode, the cross section of the lead is a relatively optimized interface, the maximum effect of current transmission can be achieved, and the number of the leads can be designed according to different production requirements. When the two solar cells are connected, the two solar cells are electrically connected with the plurality of wires, so that the resistance of the interconnection structure can be effectively reduced, and the loss caused by the resistance of the interconnection structure is reduced.
The wire can reflect the sunlight of incidenting into the wire to the surface of cell body again, improves the rate of utilization of solar wafer light, has reduced the influence that the electrode shading caused. The wire diameter is 50-200 μm, wherein the wire diameter may be, but not exclusively, 50, 100, 150, 200 μm.
The lead is radially arranged from at least one long edge of the initial axial polymer film body, namely the lead is closer to the initial axis, the distance between the adjacent leads is smaller, the lead is more compact, the lead is radially arranged, the current transmission direction can be optimized, the transmission path and the internal damage are reduced, and the photoelectric conversion efficiency of the solar cell is improved. The solar cell plates with larger width can be used for laminating, so that the cutting times of the whole solar cell plate can be reduced, the process connection times are reduced, and the mechanical damage and the fragment rate caused by cutting the whole solar cell plate are reduced.
The battery body is formed by cutting the whole solar cell panel, the whole solar cell panel can be cut along the direction parallel to the wide edge, and the battery body can be one half, one third, one fourth, one fifth or one sixth of the whole solar cell panel.
The polymer film body can effectively reduce rigid contact in the use process of the solar cell, reduce the generation of fragments and cracks, and is also favorable for filling gaps at various positions and reducing the generation of poor cavities. The polymer film body may be a single layer polymer film body or a multilayer polymer film body.
Further, embedding the lead 20 in the polymer film body 10 includes hot-pressing the lead 20 into the polymer film body 10.
In the embodiment of the invention, when the lead wire is hot-pressed into the polymer film body, the polymer film body is melted and bonded with the lead wire, and after the polymer film body is cooled, the polymer film body is fixed with the lead wire. The polymer film body is welded with the conducting wire, so that the operation is simple, and the production and the manufacture are convenient.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (15)
1. The polymer film provided with the conducting wire is characterized by comprising a polymer film body and the conducting wire, wherein the polymer film body is fixedly connected with the conducting wire, a starting shaft is arranged on the polymer film body, the starting shaft is parallel to any long edge of the polymer film body, and the conducting wire is radially arranged from the starting shaft to at least one long edge of the polymer film body.
2. The polymer film provided with a conducting wire according to claim 1, wherein the starting axis is any one long side of the polymer film body.
3. The polymer film provided with a conducting wire according to claim 1, wherein the starting axis is a symmetry axis of the polymer film body.
4. The polymer film provided with the lead according to claim 1, wherein the lead is at least partially exposed from at least one side surface of the polymer film body.
5. The polymer film provided with the lead according to claim 4, wherein a side of the polymer film body exposed to the lead is provided with an adhesive layer.
6. The polymer film provided with conducting wires according to claim 1, wherein the polymer film body is provided with through holes, and the through holes are arranged between the conducting wires and/or between the conducting wires and the broad side of the polymer film body.
7. The polymer film provided with a conductive wire according to claim 1, wherein the thickness of the polymer film body is 5 to 200 μm.
8. The polymer film provided with a conductive wire according to claim 1, wherein the conductive wire has a circular cross section and a diameter of 50 to 500 μm.
9. The polymer film provided with a conductive wire according to claim 1, wherein an outer portion of the conductive wire is partially or entirely coated with a conductive layer.
10. The polymer film provided with conducting wires according to claim 9, wherein the material of the conductive layer is a metal or an alloy, and the melting point of the conductive layer is less than 240 ℃.
11. The polymer film provided with conducting wires according to claim 9, wherein the material of the conducting layer is any one or a combination of indium, antimony, tin, bismuth, zinc, cadmium and lead.
12. The polymer film provided with the conducting wire according to claim 1, wherein the conducting wire is made of copper, aluminum, silver, copper-clad aluminum, copper-nickel alloy or copper-zinc alloy.
13. The polymer film provided with a lead according to claim 1, wherein a material of the polymer film body is cellulose acetate, a fluororesin, a polysulfone resin, a polyester resin, a polyamide resin, a polyurethane resin, or a polyolefin-based resin.
14. A method of manufacturing a polymer film provided with a conductive wire, comprising the steps of:
arranging wires on a polymer film body, dividing a cutting area on the polymer film body, wherein the cutting area is provided with a starting shaft, the starting shaft is parallel to any long side of the cutting area, and the wires are radially arranged from the starting shaft to at least one long side of the cutting area;
embedding the wire in the polymer film body;
and cutting the polymer film body according to the cutting area.
15. The method for manufacturing a polymer film provided with a lead according to claim 14, wherein embedding the lead in the polymer film body comprises hot-pressing the lead into the polymer film body.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811628455.2A CN111403526A (en) | 2018-12-28 | 2018-12-28 | Polymer film with lead wire and method for manufacturing polymer film with lead wire |
| PCT/CN2019/124064 WO2020135003A1 (en) | 2018-12-28 | 2019-12-09 | Solar cell interconnection structure, polymer film provided with wires, and method for manufacturing polymer film provided with wires |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811628455.2A CN111403526A (en) | 2018-12-28 | 2018-12-28 | Polymer film with lead wire and method for manufacturing polymer film with lead wire |
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| Publication Number | Publication Date |
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| CN111403526A true CN111403526A (en) | 2020-07-10 |
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| CN201811628455.2A Pending CN111403526A (en) | 2018-12-28 | 2018-12-28 | Polymer film with lead wire and method for manufacturing polymer film with lead wire |
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