CN110429143A - A kind of electrode, photovoltaic cell and photovoltaic cell component for photovoltaic cell - Google Patents
A kind of electrode, photovoltaic cell and photovoltaic cell component for photovoltaic cell Download PDFInfo
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- 210000004027 cell Anatomy 0.000 title claims description 48
- 210000003850 cellular structure Anatomy 0.000 title claims 3
- 239000002131 composite material Substances 0.000 claims abstract description 94
- 229910052751 metal Inorganic materials 0.000 claims abstract description 36
- 239000002184 metal Substances 0.000 claims abstract description 36
- 239000012528 membrane Substances 0.000 claims description 36
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 6
- 238000002834 transmittance Methods 0.000 claims description 6
- 238000001392 ultraviolet--visible--near infrared spectroscopy Methods 0.000 claims description 6
- 239000011787 zinc oxide Substances 0.000 claims description 6
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 229910003437 indium oxide Inorganic materials 0.000 claims description 3
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 claims description 3
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 3
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 3
- TYHJXGDMRRJCRY-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) tin(4+) Chemical compound [O-2].[Zn+2].[Sn+4].[In+3] TYHJXGDMRRJCRY-UHFFFAOYSA-N 0.000 claims description 3
- 210000004276 hyalin Anatomy 0.000 claims 5
- 239000006117 anti-reflective coating Substances 0.000 claims 1
- 230000003667 anti-reflective effect Effects 0.000 claims 1
- 150000001875 compounds Chemical class 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 238000004049 embossing Methods 0.000 claims 1
- 239000007888 film coating Substances 0.000 claims 1
- MRNHPUHPBOKKQT-UHFFFAOYSA-N indium;tin;hydrate Chemical compound O.[In].[Sn] MRNHPUHPBOKKQT-UHFFFAOYSA-N 0.000 claims 1
- 238000002955 isolation Methods 0.000 claims 1
- 230000003287 optical effect Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000006073 displacement reaction Methods 0.000 abstract description 4
- 239000012790 adhesive layer Substances 0.000 description 6
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F77/00—Constructional details of devices covered by this subclass
- H10F77/20—Electrodes
- H10F77/206—Electrodes for devices having potential barriers
- H10F77/211—Electrodes for devices having potential barriers for photovoltaic cells
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- H—ELECTRICITY
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- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F19/00—Integrated devices, or assemblies of multiple devices, comprising at least one photovoltaic cell covered by group H10F10/00, e.g. photovoltaic modules
- H10F19/90—Structures for connecting between photovoltaic cells, e.g. interconnections or insulating spacers
- H10F19/902—Structures for connecting between photovoltaic cells, e.g. interconnections or insulating spacers for series or parallel connection of photovoltaic cells
- H10F19/904—Structures for connecting between photovoltaic cells, e.g. interconnections or insulating spacers for series or parallel connection of photovoltaic cells characterised by the shapes of the structures
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F19/00—Integrated devices, or assemblies of multiple devices, comprising at least one photovoltaic cell covered by group H10F10/00, e.g. photovoltaic modules
- H10F19/90—Structures for connecting between photovoltaic cells, e.g. interconnections or insulating spacers
- H10F19/902—Structures for connecting between photovoltaic cells, e.g. interconnections or insulating spacers for series or parallel connection of photovoltaic cells
- H10F19/906—Structures for connecting between photovoltaic cells, e.g. interconnections or insulating spacers for series or parallel connection of photovoltaic cells characterised by the materials of the structures
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F77/00—Constructional details of devices covered by this subclass
- H10F77/20—Electrodes
- H10F77/244—Electrodes made of transparent conductive layers, e.g. transparent conductive oxide [TCO] layers
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F77/00—Constructional details of devices covered by this subclass
- H10F77/30—Coatings
- H10F77/306—Coatings for devices having potential barriers
- H10F77/311—Coatings for devices having potential barriers for photovoltaic cells
- H10F77/315—Coatings for devices having potential barriers for photovoltaic cells the coatings being antireflective or having enhancing optical properties
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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
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Abstract
本发明公开了一种用于光伏电池的电极、光伏电池及光伏电池组件，电极包括具有导电性能且受热后具有粘合作用的复合膜和通过粘结嵌设在所述复合膜中的多股平行设置的金属线，各股所述金属线均部分凸出于所述复合膜。该用于光伏电池的电极结构简单，使得电极的制作工艺也简单，更进一步，在复合膜与光伏电池相接触的一端面采用粗糙面或压花面，可减少电级制造过程中复合膜和金属线与光伏电池之间的相对位移，还可以使用具有导电性的复合膜，降低电阻提高光伏组件的性能，或是使用具有一定颜色的复合膜，使得光伏产品具有个性化的外观。
The invention discloses an electrode for a photovoltaic cell, a photovoltaic cell and a photovoltaic cell assembly. The electrode includes a composite film with electrical conductivity and adhesion after being heated, and a plurality of strands embedded in the composite film by bonding. Metal wires arranged in parallel, each strand of the metal wires partially protrudes from the composite film. The structure of the electrode used for photovoltaic cells is simple, so that the manufacturing process of the electrodes is also simple. Further, a rough surface or an embossed surface is used on the end surface of the composite film in contact with the photovoltaic cell, which can reduce the composite film and the surface in the electrode manufacturing process. The relative displacement between the metal wire and the photovoltaic cell can also use a conductive composite film to reduce the resistance and improve the performance of the photovoltaic module, or use a composite film with a certain color to make the photovoltaic product have a personalized appearance.
Description
技术领域technical field
本发明涉及电池生产制造技术领域，具体涉及一种用于光伏电池的电极、光伏电池及光伏电池组件。The invention relates to the technical field of battery production and manufacturing, in particular to an electrode for a photovoltaic battery, a photovoltaic battery and a photovoltaic battery assembly.
背景技术Background technique
专利申请CN101425546B 中公开了一种光电电池的电极， 该电极包括具有平坦表面的电绝缘光学透明膜、设于平坦表面上的粘合剂层、多个平行设置的电传导性线，所述线位于所述膜的所述平坦表面的上方并且嵌入到所述粘合剂层中，所述粘合剂层的厚度小于嵌入到所述粘合剂层中的所述线的厚度，使得所述线的表面的一部分从所述粘合剂层突出。该专利文献中所公开的电极具有两层薄膜，一层为电绝缘光学透明膜，另一层为粘合剂层，使得该电极结构复杂，从而使得制作工艺也复杂，而且制造过程中膜和线与光伏元件之间的相对位移较大，从而影响光伏组件的性能。Patent application CN101425546B discloses an electrode of a photovoltaic cell, which comprises an electrically insulating optically transparent film with a flat surface, an adhesive layer disposed on the flat surface, a plurality of electrically conductive wires arranged in parallel, and the wires positioned over the planar surface of the film and embedded in the adhesive layer, the thickness of the adhesive layer being less than the thickness of the wires embedded in the adhesive layer such that the A portion of the surface of the thread protrudes from the adhesive layer. The electrode disclosed in this patent document has two layers of films, one is an electrically insulating optically transparent film, and the other is an adhesive layer, which makes the structure of the electrode complicated, and the manufacturing process is also complicated. The relative displacement between the wire and the photovoltaic element is large, which affects the performance of the photovoltaic module.
发明内容Contents of the invention
本发明的目的是针对现有技术中的问题，提供一种用于光伏电池的电极。The object of the present invention is to provide an electrode for a photovoltaic cell to solve the problems in the prior art.
为达到上述目的，本发明采用的技术方案是：In order to achieve the above object, the technical scheme adopted in the present invention is:
一种用于光伏电池的电极，包括具有导电性能且受热后具有粘合作用的复合膜和通过粘结嵌设在所述复合膜中的多股平行设置的金属线，各股所述金属线均部分凸出于所述复合膜。An electrode for a photovoltaic cell, comprising a composite film that has electrical conductivity and has an adhesive effect after being heated, and a plurality of parallel metal wires embedded in the composite film by bonding, each of the metal wires Parts protrude from the composite membrane.
优选地，所述复合膜加热到90~110℃后软化与多股所述金属线相粘合。Preferably, the composite film is softened and adhered to multiple strands of the metal wires after being heated to 90-110°C.
优选地，所述复合膜为无色透明膜，且在UV-VIS-NIR范围内的入射光子平均透射率大于90%，或者所述复合膜为有色膜，且在UV-VIS-NIR范围内的入射光子平均透射率大于30%。Preferably, the composite film is a colorless transparent film, and the average transmittance of incident photons in the UV-VIS-NIR range is greater than 90%, or the composite film is a colored film, and in the UV-VIS-NIR range The average transmittance of incident photons is greater than 30%.
优选地，所述复合膜的材质包括PO、EVA，PVB、PE、PP或者PMMA。Preferably, the material of the composite membrane includes PO, EVA, PVB, PE, PP or PMMA.
优选地，所述复合膜的厚度为20~100um。Preferably, the thickness of the composite film is 20-100um.
优选地，所述复合膜远离光伏电池的一端面上设有透明膜，所述透明膜为减反膜或者增反膜。Preferably, a transparent film is provided on the end surface of the composite film away from the photovoltaic cell, and the transparent film is an anti-reflection film or an anti-reflection film.
进一步地，所述透明膜具有导电性，所述透明膜的材质包括氧化铟锡、掺钨氧化铟、掺铝氧化锌、掺镓氧化锌或者氧化铟锡锌，或者所述透明膜为电绝缘光学透明膜。Further, the transparent film has conductivity, and the material of the transparent film includes indium tin oxide, tungsten-doped indium oxide, aluminum-doped zinc oxide, gallium-doped zinc oxide or indium tin zinc oxide, or the transparent film is electrically insulating Optically clear film.
优选地，所述复合膜与光伏电池相接触的一端面为粗糙面或压花面。Preferably, one end surface of the composite film in contact with the photovoltaic cell is a rough surface or an embossed surface.
优选地，多股所述金属线平行设置形成一平面，所述复合膜包括分别位于所述平面的相对两侧的上复合膜和下复合膜，所述上复合膜和所述下复合膜之间具有一间隔距离，各股所述金属线均部分凸出于所述上复合膜和所述下复合膜。Preferably, multiple strands of the metal wires are arranged in parallel to form a plane, and the composite film includes an upper composite film and a lower composite film respectively located on opposite sides of the plane, and the upper composite film and the lower composite film are There is a distance between them, and each strand of the metal wires partially protrudes from the upper composite film and the lower composite film.
本发明还提供一种光伏电池，具有如上述任一项所述的电极，所述金属线凸出于所述复合膜的部分与光伏电池的细栅线相接触，且所述金属线与所述细栅线垂直相交。The present invention also provides a photovoltaic cell, which has an electrode as described in any one of the above, the part of the metal wire protruding from the composite film is in contact with the thin grid line of the photovoltaic cell, and the metal wire is in contact with the thin grid wire of the photovoltaic cell. The fine grid lines intersect perpendicularly.
本发明还提供一种光伏电池组件，具有如上述任一项所述的电极。The present invention also provides a photovoltaic cell assembly, which has the electrode described in any one of the above.
优选地，多股所述金属线平行设置形成一平面，所述复合膜包括分别位于所述平面的相对两侧的上复合膜和下复合膜，所述上复合膜和所述下复合膜之间具有一间隔距离，各股所述金属线均部分凸出于所述上复合膜和所述下复合膜，同一所述复合膜的所述上复合膜和所述下复合膜分别与不同的光伏电池通过热压粘结，且所述金属线凸出于所述上复合膜和所述下复合膜的部分分别与所述光伏电池的细栅线相接触，且所述金属线与所述细栅线垂直相交。Preferably, multiple strands of the metal wires are arranged in parallel to form a plane, and the composite film includes an upper composite film and a lower composite film respectively located on opposite sides of the plane, and the upper composite film and the lower composite film are There is a distance between them, and the metal wires of each strand protrude partially from the upper composite film and the lower composite film, and the upper composite film and the lower composite film of the same composite film are respectively connected with different The photovoltaic cells are bonded by thermocompression, and the parts of the metal wires protruding from the upper composite film and the lower composite film are respectively in contact with the thin grid lines of the photovoltaic cells, and the metal wires are in contact with the thin grid lines of the photovoltaic cells. The fine grid lines intersect perpendicularly.
由于上述技术方案的运用，本发明与现有技术相比具有下列优点：本发明的用于光伏电池的电极结构简单，使得电极的制作工艺也简单，可减少电级制造过程中复合膜和金属线与光伏电池之间的相对位移，从而提高光伏组件的性能。Due to the application of the above-mentioned technical scheme, the present invention has the following advantages compared with the prior art: the structure of the electrode for photovoltaic cells of the present invention is simple, so that the manufacturing process of the electrode is also simple, and can reduce the amount of composite film and metal in the electrode manufacturing process. The relative displacement between the wire and the photovoltaic cell, thereby improving the performance of the photovoltaic module.
附图说明Description of drawings
附图1为本发明的用于光伏电池的电极的结构示意图；Accompanying drawing 1 is the structural representation of the electrode that is used for photovoltaic cell of the present invention;
附图2为本发明的光伏电池组件的结构示意图。Accompanying drawing 2 is the structure schematic diagram of the photovoltaic cell assembly of the present invention.
具体实施方式Detailed ways
下面结合附图来对本发明的技术方案作进一步的阐述。The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.
如图1所示，本发明的用于光伏电池的电极包括复合膜1和多股平行设置的金属线2，复合膜1受热后具有粘合作用，在复合膜1加热软化后，可将多股金属线2分别粘结嵌设在复合膜1中，各股金属线2均有部分凸出于复合膜1。As shown in Figure 1, the electrode that is used for photovoltaic cell of the present invention comprises composite film 1 and the metal wire 2 that multiple strands are arranged in parallel; The strands of metal wires 2 are bonded and embedded in the composite film 1 respectively, and each strand of metal wires 2 protrudes from the composite membrane 1 partially.
复合膜1具有导电性能，这可降低通过其形成的光伏电池组件的整体串阻。The composite film 1 has electrical conductivity, which can reduce the overall series resistance of the photovoltaic cell module formed therefrom.
复合膜1的材质包括PO、EVA，PVB、PE、PP或者PMMA，它还可以用来阻止光伏系统的封装材料老化所释放的酸性或其他具有氧化性和腐蚀性的化学物质到达光伏电池4的表面，从而影响光伏电池4的性能。本实施例中，将复合膜1加热到90~110℃后使其软化并具有粘接作用，从而与多股金属线2相粘合。The material of the composite film 1 includes PO, EVA, PVB, PE, PP or PMMA, and it can also be used to prevent the acid or other oxidizing and corrosive chemical substances released by the aging of the packaging material of the photovoltaic system from reaching the photovoltaic cell 4. surface, thereby affecting the performance of the photovoltaic cell 4. In this embodiment, the composite film 1 is heated to 90-110° C. to make it soften and have an adhesive effect, so as to bond with the multi-strand metal wires 2 .
复合膜1可以为无色透明膜，其在UV-VIS-NIR范围内的入射光子平均透射率优选大于90%。The composite film 1 can be a colorless transparent film, and its average transmittance of incident photons in the range of UV-VIS-NIR is preferably greater than 90%.
或者，复合膜1也可以具有特定颜色，比如黑色、橙色、白色等以满足在不同应用中的个性化程度，但其在UV-VIS-NIR范围内的入射光子平均透射率优选的应大于30%。Or, the composite film 1 can also have a specific color, such as black, orange, white, etc. to meet the degree of personalization in different applications, but its average transmittance of incident photons in the UV-VIS-NIR range should preferably be greater than 30 %.
本实施例中，复合膜1的厚度为20~100um，其宽度及长度与光伏电池4的宽度和长度均相同，或者略小于光伏电池4的宽度和长度。In this embodiment, the thickness of the composite film 1 is 20-100 um, and its width and length are the same as those of the photovoltaic cell 4 , or slightly smaller than the width and length of the photovoltaic cell 4 .
复合膜1远离光伏电池4的一端面上也可以设置透明膜3，透明膜3为减反膜或者增反膜。A transparent film 3 may also be provided on the end surface of the composite film 1 away from the photovoltaic cell 4 , and the transparent film 3 is an anti-reflection film or an anti-reflection film.
透明膜3可以具有导电性，此时，透明膜3的材质包括氧化铟锡、掺钨氧化铟、掺铝氧化锌、掺镓氧化锌或者氧化铟锡锌。透明膜3也可以为电绝缘光学透明膜。The transparent film 3 may have conductivity. In this case, the material of the transparent film 3 includes indium tin oxide, tungsten-doped indium oxide, aluminum-doped zinc oxide, gallium-doped zinc oxide or indium tin zinc oxide. The transparent film 3 can also be an electrically insulating optically transparent film.
复合膜1与光伏电池4相接触的一端面为粗糙面或压花面，在电极生产过程中，这可减少或避免复合膜1及金属线2与光伏电池4之间的相互位移。The end surface of the composite film 1 in contact with the photovoltaic cell 4 is a rough surface or an embossed surface, which can reduce or avoid mutual displacement between the composite film 1 and the metal wire 2 and the photovoltaic cell 4 during the electrode production process.
多股金属线2平行设置形成一平面，复合膜1包括分别位于平面的相对两侧的上复合膜11和下复合膜12，上复合膜11和下复合膜12之间具有一间隔距离，各股金属线2均部分凸出于上复合膜11和下复合膜12。Multiple strands of metal wires 2 are arranged in parallel to form a plane. The composite film 1 includes an upper composite film 11 and a lower composite film 12 respectively located on opposite sides of the plane. There is a distance between the upper composite film 11 and the lower composite film 12, each The strands of metal wires 2 partially protrude from the upper composite film 11 and the lower composite film 12 .
本发明还公开了一种光伏电池，该光伏电池具有如上述的电极，复合膜1叠加在光伏电池4上并与光伏电池4通过热压粘结，金属线2凸出于复合膜1的部分与光伏电池4的细栅线相接触，且金属线2与细栅线垂直相交。The present invention also discloses a photovoltaic cell, the photovoltaic cell has the above-mentioned electrodes, the composite film 1 is superimposed on the photovoltaic cell 4 and bonded with the photovoltaic cell 4 by thermocompression, and the metal wire 2 protrudes from the part of the composite film 1 It is in contact with the thin grid lines of the photovoltaic cell 4, and the metal wire 2 perpendicularly intersects with the thin grid lines.
本发明还公开了一种光伏电池组件，如图2所示，电池组件包括至少两个光伏电池4和多个复合膜1，复合膜1包括上复合膜11和下复合膜12，同一个复合膜1的上复合膜11和下复合膜12分别叠加在与不同的光伏电池4上并与其通过热压粘结，金属线2凸出于上复合膜11和下复合膜12的部分分别与光伏电池4的细栅线相接触，且金属线与细栅线垂直相交。The present invention also discloses a photovoltaic battery assembly. As shown in FIG. 2, the battery assembly includes at least two photovoltaic cells 4 and a plurality of composite films 1, and the composite film 1 includes an upper composite film 11 and a lower composite film 12. The same composite film The upper composite film 11 and the lower composite film 12 of the film 1 are respectively superimposed on different photovoltaic cells 4 and bonded to them by thermocompression. The thin grid lines of the battery 4 are in contact, and the metal wires perpendicularly intersect with the thin grid lines.
上述实施例只为说明本发明的技术构思及特点，其目的在于让熟悉此项技术的人士能够了解本发明的内容并加以实施，并不能以此限制本发明的保护范围，凡根据本发明精神实质所作的等效变化或修饰，都应涵盖在本发明的保护范围内。The above-mentioned embodiments are only to illustrate the technical conception and characteristics of the present invention. Substantial equivalent changes or modifications shall fall within the protection scope of the present invention.
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