CN204303839U - Solar cell backboard - Google Patents
Solar cell backboard Download PDFInfo
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- CN204303839U CN204303839U CN201420860246.1U CN201420860246U CN204303839U CN 204303839 U CN204303839 U CN 204303839U CN 201420860246 U CN201420860246 U CN 201420860246U CN 204303839 U CN204303839 U CN 204303839U
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- 239000010410 layer Substances 0.000 claims abstract description 73
- 229920002799 BoPET Polymers 0.000 claims abstract description 25
- 230000002195 synergetic effect Effects 0.000 claims abstract description 25
- 239000002033 PVDF binder Substances 0.000 claims abstract description 20
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims abstract description 20
- 239000012790 adhesive layer Substances 0.000 claims abstract description 11
- 238000006243 chemical reaction Methods 0.000 abstract description 13
- 238000010521 absorption reaction Methods 0.000 abstract description 5
- 238000001228 spectrum Methods 0.000 abstract description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 4
- 230000004888 barrier function Effects 0.000 abstract description 4
- 229910052760 oxygen Inorganic materials 0.000 abstract description 4
- 239000001301 oxygen Substances 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 230000009466 transformation Effects 0.000 abstract description 3
- 239000010408 film Substances 0.000 description 36
- 230000000694 effects Effects 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 4
- 229910021419 crystalline silicon Inorganic materials 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 239000005038 ethylene vinyl acetate Substances 0.000 description 3
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 3
- 239000010409 thin film Substances 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004840 adhesive resin Substances 0.000 description 1
- 229920006223 adhesive resin Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229920000092 linear low density polyethylene Polymers 0.000 description 1
- 239000004707 linear low-density polyethylene Substances 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
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 229920005672 polyolefin resin Polymers 0.000 description 1
- 229920005606 polypropylene copolymer Polymers 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/52—PV systems with concentrators
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- Photovoltaic Devices (AREA)
Abstract
一种太阳能电池背板，包括自上而下依次设置的PVDF膜层、PET膜层、粘结层及用于吸收10-400nm的紫外光的增效膜层，PVDF膜层与PET膜层共挤成型，粘结层的两面分别与PET膜层与增效膜层贴合。本实用新型的太阳能电池背板，通过设置用于吸收10-400nm的紫外光的增效膜层，能转换利用现有电池片无法转化的光波，拓宽对太阳能光谱吸收转化范围，使制作的太阳能电池的光电转化效率提高，另外，上述太阳能电池背板通过其将PVDF膜层与PET膜层共挤成型，增强了PVDF膜层与PET膜层之间的粘结性、耐候性和对水汽及氧的阻隔性能，保证了太阳能电池板的使用寿命，同时可以降低太阳能电池背板的厚度。
A solar cell backboard, comprising a PVDF film layer, a PET film layer, an adhesive layer and a synergistic film layer for absorbing ultraviolet light of 10-400nm arranged in sequence from top to bottom, the PVDF film layer and the PET film layer Extruded, the two sides of the adhesive layer are laminated with the PET film layer and the synergistic film layer respectively. The solar battery backboard of the utility model can convert and utilize light waves that cannot be converted by existing battery sheets by setting a synergistic film layer for absorbing 10-400nm ultraviolet light, broaden the range of absorption and transformation of solar energy spectrum, and make the produced solar energy The photoelectric conversion efficiency of the battery is improved. In addition, the above-mentioned solar cell backsheet enhances the adhesion, weather resistance and resistance to water vapor and PET film by co-extruding the PVDF film layer and the PET film layer. Oxygen barrier performance ensures the service life of the solar cell panel, and can reduce the thickness of the solar cell back sheet at the same time.
Description
技术领域technical field
本实用新型涉及太阳电池技术领域，特别涉及一种太阳能电池背板。The utility model relates to the technical field of solar cells, in particular to a solar cell backboard.
背景技术Background technique
随着传统能源的日益贫乏，全球对新型能源的开发与利用越来越成为举世关注的焦点，太能作为新型能源你具有取之不尽、用之不竭，无污染、无公害的特点而备受全球关注，并实现能源转化的产业化。目前的商业化晶体硅太阳能电池主要吸收利用400-700nm的可见光，对于低于400nm的紫外线波段的光基本不吸收利用，造成部分太阳光的能量不被有效利用，这在一定程度上影响了太阳能电池的效率，使得当前商业化晶体硅太阳能电池的效率基本处在14％-17％，在现有的商业化晶体硅的生产水平下难有更大程度的提高。通过转化利用现有电池片无法转化的光波，拓宽对太阳光谱吸收范围，将可以更好的挖掘晶体硅电池片的潜能，通过增加很小的投入产生更大的效益，对光伏产业的发展具有深远的影响。With the increasing scarcity of traditional energy sources, the global development and utilization of new energy sources has increasingly become the focus of worldwide attention. As a new energy source, solar energy has the characteristics of inexhaustible, inexhaustible, pollution-free, and pollution-free. It has attracted global attention and realized the industrialization of energy transformation. The current commercial crystalline silicon solar cells mainly absorb and utilize visible light of 400-700nm, and basically do not absorb and utilize light in the ultraviolet band below 400nm, resulting in partial sunlight energy not being effectively utilized, which affects solar energy to a certain extent. The efficiency of the cell makes the efficiency of the current commercial crystalline silicon solar cells basically at 14%-17%, and it is difficult to improve to a greater extent under the current production level of commercial crystalline silicon. By converting and utilizing the light waves that cannot be converted by existing solar cells, and broadening the absorption range of the solar spectrum, the potential of crystalline silicon solar cells can be better tapped, and greater benefits can be generated by increasing a small investment, which is of great significance to the development of the photovoltaic industry. profound influence.
太阳能电池背板对太阳能电池的光电转换效率有影响，现有技术中的太阳能电池背板制作的太阳能电池的光电转换效率低。The solar cell back sheet has an influence on the photoelectric conversion efficiency of the solar cell, and the photoelectric conversion efficiency of the solar cell made of the solar cell back sheet in the prior art is low.
实用新型内容Utility model content
有鉴于此，本实用新型的目的是提供一种可以增强太阳能电池的光电转换效率的太阳能电池背板。In view of this, the purpose of the present utility model is to provide a solar cell backboard which can enhance the photoelectric conversion efficiency of the solar cell.
本实用新型提供一种太阳能电池背板，包括自上而下依次设置的PVDF膜层、PET膜层、粘结层及用于吸收10-400nm的紫外光的增效膜层，所述PVDF膜层与PET膜层共挤成型，所述粘结层的两面分别与所述PET膜层与所述增效膜层贴合。The utility model provides a solar cell backboard, which comprises a PVDF film layer, a PET film layer, an adhesive layer and a synergistic film layer for absorbing ultraviolet light of 10-400nm arranged in sequence from top to bottom. The PVDF film The layer and the PET film layer are co-extruded, and the two sides of the adhesive layer are bonded to the PET film layer and the synergistic film layer respectively.
进一步地，所述PVDF膜层的厚度为10-40um。Further, the thickness of the PVDF film layer is 10-40um.
进一步地，所述PET膜层的厚度为100-400um。Further, the thickness of the PET film layer is 100-400um.
进一步地，所述粘结层的厚度为5-30um。Further, the thickness of the bonding layer is 5-30um.
进一步地，所述增效膜层的厚度为15-150um。Further, the thickness of the synergistic film layer is 15-150um.
由于上述技术方案的运用，本实用新型与现有技术相比具有下列优点：Due to the application of the above-mentioned technical solution, the utility model has the following advantages compared with the prior art:
本实用新型的太阳能电池背板，通过设置用于吸收10-400nm的紫外光的增效膜层，能转换利用现有电池片无法转化的光波，拓宽对太阳能光谱吸收转化范围，使制作的太阳能电池的光电转化效率提高，另外，本实用新型的太阳能电池背板通过其将PVDF膜层与PET膜层共挤成型，增强了PVDF膜层与PET膜层之间的粘结性、耐候性和对水汽及氧的阻隔性能，保证了太阳能电池板的使用寿命，同时可以降低太阳能电池背板的厚度。The solar battery backboard of the utility model can convert and utilize light waves that cannot be converted by existing battery sheets by setting a synergistic film layer for absorbing 10-400nm ultraviolet light, broaden the range of absorption and transformation of solar energy spectrum, and make the solar energy produced The photoelectric conversion efficiency of the battery is improved. In addition, the solar cell backboard of the present invention co-extrudes the PVDF film layer and the PET film layer to enhance the adhesion, weather resistance and The barrier performance to water vapor and oxygen ensures the service life of the solar cell panel and can reduce the thickness of the solar cell back sheet.
附图说明Description of drawings
图1是本实用新型实施例的太阳能电池背板的结构示意图。FIG. 1 is a schematic structural view of a solar cell backplane according to an embodiment of the present invention.
具体实施方式Detailed ways
为使本实用新型的目的、技术方案和优点更加清楚明了，下面结合具体实施方式并参照附图，对本实用新型进一步详细说明。应该理解，这些描述只是示例性的，而并非要限制本实用新型的范围。此外，在以下说明中，省略了对公知结构和技术的描述，以避免不必要地混淆本实用新型的概念。In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below in combination with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and not intended to limit the scope of the present invention. In addition, in the following description, descriptions of known structures and technologies are omitted to avoid unnecessarily confusing the concept of the present invention.
请参阅图1，本实用新型实施例提供的太阳能电池背板，包括自上而下依次设置的PVDF膜层1、PET膜层2、粘结层3及增效膜层4。其中，PVDF膜层1与PET膜层2共挤成型，即PVDF膜层1与PET膜层2是通过共挤成型所形成的微纳结构，增强了PVDF膜层1与PET膜层2之间的粘结性、耐候性和对水汽及氧的阻隔性能，保证了太阳能电池板的使用寿命，并且可以降低太阳能电池背板的厚度。粘结层3的两面分别与PET膜层2与增效膜层4贴合。增效膜层4用于吸收10-400nm的紫外光，能转换利用现有电池片无法转化的光波，拓宽对太阳能光谱吸收转化范围，使制作的太阳能电池的光电转化效率提高。Please refer to FIG. 1 , the solar cell backsheet provided by the embodiment of the present invention includes a PVDF film layer 1 , a PET film layer 2 , an adhesive layer 3 and a synergistic film layer 4 arranged in sequence from top to bottom. Among them, the PVDF film layer 1 and the PET film layer 2 are co-extruded, that is, the PVDF film layer 1 and the PET film layer 2 are micro-nano structures formed by co-extrusion molding, which strengthens the gap between the PVDF film layer 1 and the PET film layer 2. Excellent adhesion, weather resistance and barrier properties to water vapor and oxygen ensure the service life of the solar cell panel and reduce the thickness of the solar cell back sheet. Both sides of the adhesive layer 3 are attached to the PET film layer 2 and the synergistic film layer 4 respectively. The synergistic film layer 4 is used to absorb 10-400nm ultraviolet light, which can convert light waves that cannot be converted by existing solar cells, broaden the absorption and conversion range of solar energy spectrum, and improve the photoelectric conversion efficiency of the solar cells produced.
本实用新型采用PVDF膜层1，增加含氟量，从而提高背板的抗紫外能力，使背板耐水解性及附着力大大提高。The utility model adopts the PVDF film layer 1 to increase the fluorine content, thereby improving the anti-ultraviolet ability of the backboard, and greatly improving the hydrolysis resistance and adhesion of the backboard.
具体地，在本实施例中，增效膜层4是以聚烯烃树脂和粘结性树脂为主体树脂的薄膜，并且增效膜层4还加入荧光剂，可以吸收10-400nm的紫外光。Specifically, in this embodiment, the synergistic film layer 4 is a film with polyolefin resin and adhesive resin as the main resin, and the synergistic film layer 4 is also added with a fluorescent agent, which can absorb ultraviolet light of 10-400nm.
在其他实施例中增效膜层4是以线性低密度聚乙烯和乙烯-醋酸乙烯共聚物为主体树脂的薄膜，并且增效膜层4还加入荧光剂，可以吸收10-400nm的紫外光。In other embodiments, the synergistic film layer 4 is a thin film with linear low density polyethylene and ethylene-vinyl acetate copolymer as the main resin, and the synergistic film layer 4 is also added with a fluorescent agent, which can absorb 10-400nm ultraviolet light.
在其他实施例中，增效膜层4是以高密度聚乙烯、乙烯-丙烯共聚物和乙烯-醋酸乙烯共聚物为主体树脂的薄膜，并且增效膜层4还加入荧光剂，可以吸收10-400nm的紫外光。In other embodiments, the synergistic film layer 4 is a film with high-density polyethylene, ethylene-propylene copolymer and ethylene-vinyl acetate copolymer as the main resin, and the synergistic film layer 4 is also added with a fluorescent agent, which can absorb 10 -400nm UV light.
在其他实施例中，增效膜层4是以低密度聚乙烯、聚丙烯和乙烯-醋酸乙烯共聚物为主体树脂的薄膜，并且增效膜层4还加入荧光剂，可以吸收10-400nm的紫外光。In other embodiments, the synergistic film layer 4 is a thin film with low-density polyethylene, polypropylene and ethylene-vinyl acetate copolymer as the main resin, and the synergistic film layer 4 is also added with a fluorescent agent, which can absorb 10-400nm ultraviolet light.
在本实施例中，PVDF膜层1的厚度为10-40um该厚度范围内的PVDF膜层1的透光率好，制作的太阳能电池的光电转换率高。为使本实用新型达到最佳使用效果，PVDF膜层1的厚度为25um。In this embodiment, the thickness of the PVDF film layer 1 is 10-40um. The light transmittance of the PVDF film layer 1 within the thickness range is good, and the photoelectric conversion rate of the solar cell produced is high. In order to make the utility model achieve the best use effect, the thickness of the PVDF film layer 1 is 25um.
在本实施例中，PET膜层2的厚度为100-400um，该厚度范围内的PET膜层2透光效率好，制作的太阳能电池的光电转换效率高。为使本实用新型达到最佳使用效果，PET膜层2的厚度为250um。In this embodiment, the thickness of the PET film layer 2 is 100-400um, and the PET film layer 2 within this thickness range has good light transmission efficiency, and the photoelectric conversion efficiency of the fabricated solar cell is high. In order to make the utility model reach the best use effect, the thickness of the PET film layer 2 is 250um.
在本实施例中，粘结层3的厚度为5-30um，该厚度范围内的粘结层3透光效果好，制作的太阳能电池的光电转换效率高。为使本实用新型达到最佳使用效果，粘结层3的厚度为20um。In this embodiment, the thickness of the adhesive layer 3 is 5-30 um, and the adhesive layer 3 within this thickness range has a good light transmission effect, and the photoelectric conversion efficiency of the fabricated solar cell is high. In order to make the utility model achieve the best use effect, the thickness of the bonding layer 3 is 20um.
在本实施例中，增效膜层4的厚度为15-150um，该厚度范围内的增效膜层4透光效率好，制作的太阳能电池的光电转换效率高。为使本实用新型达到最佳使用效果，增效膜层4的厚度为75um。In this embodiment, the thickness of the synergistic film layer 4 is 15-150 um, and the synergistic film layer 4 within this thickness range has good light transmission efficiency, and the photoelectric conversion efficiency of the fabricated solar cell is high. In order to make the utility model achieve the best use effect, the thickness of the synergistic film layer 4 is 75um.
本实用新型的有益效果是：本实用新型的太阳能电池背板，通过设置用于吸收10-400nm的紫外光的增效膜层4，能转换利用现有电池片无法转化的光波，拓宽对太阳能光谱吸收转化范围，使制作的太阳能电池的光电转化效率提高，另外，本实用新型的太阳能电池背板通过其将PVDF膜层1与PET膜层2共挤成型，增强了PVDF膜层1与PET膜层2之间的粘结性、耐候性和对水汽及氧的阻隔性能，保证了太阳能电池板的使用寿命，同时可以降低太阳能电池背板的厚度。The beneficial effects of the utility model are: the solar cell backboard of the utility model can convert and utilize the light waves that cannot be converted by the existing solar cells by setting the synergistic film layer 4 for absorbing ultraviolet light of 10-400nm, and broaden the energy consumption of solar energy. Spectrum absorption conversion range improves the photoelectric conversion efficiency of the solar cell produced. In addition, the solar cell backboard of the present utility model co-extrudes the PVDF film layer 1 and the PET film layer 2 to enhance the PVDF film layer 1 and the PET film layer. The adhesion between the film layers 2, the weather resistance and the barrier performance to water vapor and oxygen ensure the service life of the solar cell panel and reduce the thickness of the solar cell back sheet.
以上所述仅为本实用新型的实施例而已，并非因此限制本实用新型的专利范围，凡在本实用新型的精神和原则之内，所做的任何修改、等同替换、改进等，均应包括在本实用新型的范围之内。The above description is only an embodiment of the utility model, and does not limit the patent scope of the utility model. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model shall include Within the scope of the present utility model.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420860246.1U CN204303839U (en) | 2014-12-30 | 2014-12-30 | Solar cell backboard |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420860246.1U CN204303839U (en) | 2014-12-30 | 2014-12-30 | Solar cell backboard |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104882502A (en) * | 2015-05-15 | 2015-09-02 | 苏州市亘晟涂装工程有限公司 | Solar battery |
| CN104900741A (en) * | 2015-05-15 | 2015-09-09 | 苏州市亘晟涂装工程有限公司 | Novel solar cell |
| CN104900739A (en) * | 2015-05-15 | 2015-09-09 | 苏州市亘晟涂装工程有限公司 | Solar battery |
| CN105845766A (en) * | 2016-05-23 | 2016-08-10 | 常州回天新材料有限公司 | Strong-surface-energy solar cell panel back film |
-
2014
- 2014-12-30 CN CN201420860246.1U patent/CN204303839U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104882502A (en) * | 2015-05-15 | 2015-09-02 | 苏州市亘晟涂装工程有限公司 | Solar battery |
| CN104900741A (en) * | 2015-05-15 | 2015-09-09 | 苏州市亘晟涂装工程有限公司 | Novel solar cell |
| CN104900739A (en) * | 2015-05-15 | 2015-09-09 | 苏州市亘晟涂装工程有限公司 | Solar battery |
| CN105845766A (en) * | 2016-05-23 | 2016-08-10 | 常州回天新材料有限公司 | Strong-surface-energy solar cell panel back film |
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Granted publication date: 20150429 |