CN104980104A - Solar cell module - Google Patents
Solar cell module Download PDFInfo
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- CN104980104A CN104980104A CN201510349841.8A CN201510349841A CN104980104A CN 104980104 A CN104980104 A CN 104980104A CN 201510349841 A CN201510349841 A CN 201510349841A CN 104980104 A CN104980104 A CN 104980104A
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- 239000005038 ethylene vinyl acetate Substances 0.000 claims abstract description 32
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims abstract description 32
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 31
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 31
- 239000010439 graphite Substances 0.000 claims abstract description 31
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 10
- 239000005341 toughened glass Substances 0.000 claims abstract description 10
- 239000010410 layer Substances 0.000 claims description 36
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 24
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 24
- 239000010408 film Substances 0.000 claims description 22
- 239000002131 composite material Substances 0.000 claims description 14
- -1 polyethylene terephthalate Polymers 0.000 claims description 12
- 229910021419 crystalline silicon Inorganic materials 0.000 claims description 8
- 229920002725 thermoplastic elastomer Polymers 0.000 claims description 6
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 229910021421 monocrystalline silicon Inorganic materials 0.000 claims description 3
- 229920002620 polyvinyl fluoride Polymers 0.000 claims description 3
- 239000010409 thin film Substances 0.000 claims description 3
- 238000002834 transmittance Methods 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 2
- 239000002356 single layer Substances 0.000 claims description 2
- 150000001298 alcohols Chemical class 0.000 claims 1
- 238000010248 power generation Methods 0.000 abstract description 9
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 210000004027 cell Anatomy 0.000 description 15
- 230000007423 decrease Effects 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 210000003850 cellular structure Anatomy 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
Classifications
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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
- H10F77/60—Arrangements for cooling, heating, ventilating or compensating for temperature fluctuations
- H10F77/63—Arrangements for cooling directly associated or integrated with photovoltaic cells, e.g. heat sinks directly associated with the photovoltaic cells or integrated Peltier elements for active cooling
-
- 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
- H10F19/80—Encapsulations or containers for integrated devices, or assemblies of multiple devices, having photovoltaic cells
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Landscapes
- Photovoltaic Devices (AREA)
Abstract
本发明公开了一种太阳能电池组件，包括依序层叠设置钢化玻璃、上层乙烯-醋酸乙烯共聚物(EVA)、电池组、下层乙烯-醋酸乙烯共聚物(EVA)和背板，组件四周套上铝框固定，背板外安装一个连接电池组的正负极的接线盒，所述电池组与下层乙烯-醋酸乙烯共聚物(EVA)和背板之间设有石墨导热膜。与现有技术相比，本发明具有如下有益效果：本发明在所述电池组与下层乙烯-醋酸乙烯共聚物(EVA)和背板之间设有石墨导热膜，由于石墨导热膜具有超高的导热性能，它可以将电池组在发电过程中的热量传导出去，同时将电池组本身的热量均匀再分布，降低电池组的热斑效应，提升太阳能电池的光电转换效率，进而提升组件的发电量。
The invention discloses a solar battery component, which comprises sequentially stacked tempered glass, an upper layer of ethylene-vinyl acetate copolymer (EVA), a battery pack, a lower layer of ethylene-vinyl acetate copolymer (EVA) and a back plate, and the components are covered with The aluminum frame is fixed, and a junction box connected to the positive and negative poles of the battery pack is installed outside the back plate, and a graphite heat-conducting film is arranged between the battery pack and the lower layer of ethylene-vinyl acetate copolymer (EVA) and the back plate. Compared with the prior art, the present invention has the following beneficial effects: the present invention is provided with a graphite heat-conducting film between the battery pack and the lower ethylene-vinyl acetate copolymer (EVA) and the back plate, because the graphite heat-conducting film has an ultra-high Excellent thermal conductivity, it can conduct the heat of the battery pack during the power generation process, and at the same time redistribute the heat of the battery pack itself, reduce the hot spot effect of the battery pack, improve the photoelectric conversion efficiency of the solar cell, and then improve the power generation of the module quantity.
Description
技术领域technical field
本发明涉及太阳能电池组件技术领域，尤其涉及一种新型的太阳能电池组件。The invention relates to the technical field of solar cell components, in particular to a novel solar cell component.
背景技术Background technique
太阳能电池组件是太阳能发电系统中的核心部分，其作用是将太阳能转化为电能，然后将电送往蓄电池中存储起来，或推动负载工作。The solar battery module is the core part of the solar power generation system. Its function is to convert solar energy into electrical energy, and then send the electricity to the storage battery for storage, or push the load to work.
太阳能电池是一种有效地吸收太阳辐射能，利用光生伏打效应把光能转换成电能的器件，当太阳光照在半导体P-N结(P-N Junction)上，形成新的空穴-电子对(V-E pair)，在P-N结电场的作用下，空穴由N区流向P区，电子由P区流向N区，接通电路后就形成电流。A solar cell is a device that effectively absorbs solar radiation energy and uses the photovoltaic effect to convert light energy into electrical energy. When sunlight shines on a semiconductor P-N junction (P-N Junction), a new hole-electron pair (V-E pair) is formed. ), under the action of the P-N junction electric field, holes flow from the N region to the P region, electrons flow from the P region to the N region, and a current is formed after the circuit is turned on.
如图1所示，普通太阳能电池组件由依序层叠设置的钢化玻璃1′、上层乙烯-醋酸乙烯共聚物(EVA)2′、电池组3′、下层乙烯-醋酸乙烯共聚物(EVA)4′和背板5′组成，四周套上铝框6′用硅胶粘接固定，背板5′外安装一个连接电池组的正负极的接线盒7′，钢化玻璃1′的作用为保护组件内部的太阳能电池组3′，同时保证太阳光透射到电池上；EVA4′用来粘结固定钢化玻璃1′和太阳能电池组3′；电池组3′的作用就是将太阳能转化为电能；背板5′的作用是将组件密封，保证组件绝缘和防水；铝框6′用来保护组件起一定的密封、支撑作用；接线盒7′用来连接组件与组件，提高太阳能电站的发电功率。As shown in Figure 1, an ordinary solar cell module is composed of tempered glass 1', upper layer ethylene-vinyl acetate copolymer (EVA) 2', battery pack 3', and lower layer ethylene-vinyl acetate copolymer (EVA) 4', which are sequentially stacked. Composed with the back plate 5', the aluminum frame 6' is placed around it and fixed with silica gel, and a junction box 7' connecting the positive and negative electrodes of the battery pack is installed outside the back plate 5', and the function of the tempered glass 1' is to protect the inside of the module Solar cell group 3', while ensuring that sunlight is transmitted to the battery; EVA4' is used to bond and fix tempered glass 1' and solar cell group 3'; the function of battery group 3' is to convert solar energy into electrical energy; backplane 5 The role of 'is to seal the components to ensure insulation and waterproofing of the components; the aluminum frame 6' is used to protect the components and play a certain role in sealing and supporting; the junction box 7' is used to connect components and components to improve the power generation of the solar power station.
太阳能电站在运行过程中，由于电池组件要接受太阳光的辐射，同时自身发电的原因，导致组件产生很大的热量，本身温度很高；而温度对太阳能电池组件功率的输出有很大的影响，太阳能电池组件温度较高时，工作效率下降，随着太阳能电池温度的增加，开路电压减小，在20-100℃范围，大约每升高1℃，每片电池的电压减小2mV。总的来说，温度升高，太阳电池的功率下降，典型温度系数为-0.35％/℃。也就是说，如果太阳能电池温度每升高1℃，则功率减少0.35％。During the operation of the solar power station, because the battery components have to receive the radiation of sunlight and generate electricity by themselves, the components generate a lot of heat and their temperature is very high; and the temperature has a great influence on the power output of the solar cell components , When the temperature of the solar cell module is high, the working efficiency decreases. As the temperature of the solar cell increases, the open circuit voltage decreases. In the range of 20-100°C, the voltage of each cell decreases by 2mV for every 1°C increase. In general, as the temperature increases, the power of the solar cell decreases, with a typical temperature coefficient of -0.35%/°C. That is, if the temperature of the solar cell increases by 1°C, the power decreases by 0.35%.
发明内容Contents of the invention
本发明所要解决的技术问题在于，提供一种可以降低组件运行过程中电池片的温度，提升电池片的光电转换效率，进而提升组件的发电量的太阳能电池组件，The technical problem to be solved by the present invention is to provide a solar battery module that can reduce the temperature of the battery sheet during the operation of the module, improve the photoelectric conversion efficiency of the battery sheet, and further increase the power generation of the module.
为了解决上述技术问题，本发明提供了一种太阳能电池组件，包括依序层叠设置的钢化玻璃、上层乙烯-醋酸乙烯共聚物(EVA)、电池组、下层乙烯-醋酸乙烯共聚物(EVA)和背板，组件四周套上铝框固定，背板外安装一个连接电池组的正负极的接线盒，所述电池组与下层乙烯-醋酸乙烯共聚物(EVA)和背板之间设有石墨导热膜。In order to solve the above-mentioned technical problems, the present invention provides a kind of solar cell module, comprises the tempered glass that stacks up in order, upper layer ethylene-vinyl acetate copolymer (EVA), battery pack, lower layer ethylene-vinyl acetate copolymer (EVA) and On the backboard, the components are fixed with an aluminum frame around them, and a junction box connecting the positive and negative poles of the battery pack is installed outside the backboard. Thermal film.
作为上述方案的改进，所述钢化玻璃为透光率大于90％以上的超白钢化镀膜玻璃。As an improvement to the above solution, the tempered glass is ultra-clear tempered coated glass with a light transmittance greater than 90%.
作为上述方案的改进，所述电池组为晶硅电池组或薄膜电池组。As an improvement of the above solution, the battery pack is a crystalline silicon battery pack or a thin film battery pack.
作为上述方案的改进，所述晶硅电池组为单晶硅电池组或多晶硅电池组。As an improvement of the above solution, the crystalline silicon battery pack is a monocrystalline silicon battery pack or a polycrystalline silicon battery pack.
作为上述方案的改进，所述多晶硅电池组由晶硅电池焊接在一起成6*10或者6*12阵列。As an improvement to the above solution, the polycrystalline silicon battery pack is welded together by crystalline silicon batteries to form a 6*10 or 6*12 array.
作为上述方案的改进，所述石墨导热膜为单层石墨层或者石墨复合层。As an improvement of the above solution, the graphite heat conduction film is a single graphite layer or a graphite composite layer.
作为上述方案的改进，所述石墨复合层由石墨层和聚对苯二甲酸乙二醇酯(PET)膜复合而成或由涂胶粘接而成。As an improvement of the above scheme, the graphite composite layer is composed of a graphite layer and a polyethylene terephthalate (PET) film or bonded by glue coating.
作为上述方案的改进，所述聚对苯二甲酸乙二醇酯(PET)膜为两层，石墨层位于两层聚对苯二甲酸乙二醇酯(PET)之间。As an improvement of the above solution, the polyethylene terephthalate (PET) film has two layers, and the graphite layer is located between the two layers of polyethylene terephthalate (PET).
作为上述方案的改进，所述石墨复合层靠近电池组一侧的聚对苯二甲酸乙二醇酯(PET)膜为白色。As an improvement of the above solution, the polyethylene terephthalate (PET) film on the side of the graphite composite layer close to the battery pack is white.
作为上述方案的改进，所述背板为聚氟乙烯复合膜(TPT)或热塑性弹性体(TPE)。As an improvement of the above solution, the backboard is polyvinyl fluoride composite film (TPT) or thermoplastic elastomer (TPE).
与现有技术相比，本发明具有如下有益效果：本发明在所述电池组与下层乙烯-醋酸乙烯共聚物(EVA)和背板之间设有石墨导热膜，由于石墨导热膜具有超高的导热性能，热阻比铝低40％，比铜低20％，而且重量比铝轻25％，比铜轻75％，非常适合添加到组件中，它可以将电池组在发电过程中的热量传导出去，同时将电池组本身的热量均匀再分布，降低电池组的热斑效应，提升太阳能电池的光电转换效率，进而提升组件的发电量。Compared with the prior art, the present invention has the following beneficial effects: the present invention is provided with a graphite heat-conducting film between the battery pack and the lower ethylene-vinyl acetate copolymer (EVA) and the back plate, because the graphite heat-conducting film has an ultra-high Excellent thermal conductivity, the thermal resistance is 40% lower than aluminum, 20% lower than copper, and the weight is 25% lighter than aluminum, 75% lighter than copper, very suitable for adding to components, it can transfer the heat of the battery pack during the power generation process At the same time, the heat of the battery pack itself is evenly redistributed, reducing the hot spot effect of the battery pack, improving the photoelectric conversion efficiency of the solar cell, and increasing the power generation of the module.
附图说明Description of drawings
图1是目前业界的太阳能电池组件结构图；Figure 1 is a structural diagram of solar cell modules in the current industry;
图2是本发明的一种太阳能电池组件结构图；Fig. 2 is a structural diagram of a solar cell module of the present invention;
图3是石墨复合层的结构示意图。Fig. 3 is a schematic diagram of the structure of the graphite composite layer.
具体实施方式Detailed ways
为使本发明的目的、技术方案和优点更加清楚，下面将结合附图对本发明作进一步地详细描述。In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.
如图1至图3所示，本发明提供了一种太阳能电池组件，包括依序层叠设置的钢化玻璃1、上层乙烯-醋酸乙烯共聚物(EVA)2、电池组3、下层乙烯-醋酸乙烯共聚物(EVA)4和背板5，组件四周套上铝框7固定，背板5外安装一个连接电池组3的正负极的接线盒7，电池组3与下层乙烯-醋酸乙烯共聚物(EVA)4和背板5之间设有石墨导热膜8。钢化玻璃1为透光率大于90％以上的超白钢化镀膜玻璃。As shown in Fig. 1 to Fig. 3, the present invention provides a kind of solar cell module, comprises tempered glass 1 that is arranged in sequence, upper layer ethylene-vinyl acetate copolymer (EVA) 2, battery group 3, lower layer ethylene-vinyl acetate Copolymer (EVA) 4 and back plate 5, aluminum frame 7 is put on around the assembly to fix, and a junction box 7 connecting the positive and negative poles of battery pack 3 is installed outside the back plate 5, battery pack 3 and the lower layer of ethylene-vinyl acetate copolymer A graphite heat conduction film 8 is provided between the (EVA) 4 and the back plate 5 . The toughened glass 1 is ultra-clear toughened coated glass with a light transmittance greater than 90%.
作为上述方案的改进，电池组3为晶硅电池组或薄膜电池组，晶硅电池组为单晶硅电池组或多晶硅电池组；多晶硅电池组由晶硅电池焊接在一起成6*10或者6*12阵列。As an improvement of the above scheme, the battery pack 3 is a crystalline silicon battery pack or a thin film battery pack, and the crystalline silicon battery pack is a monocrystalline silicon battery pack or a polycrystalline silicon battery pack; *12 arrays.
作为上述方案的改进，石墨导热膜8为单层石墨层或者石墨复合层，石墨复合层由石墨层81和聚对苯二甲酸乙二醇酯(PET)膜82复合而成或由涂胶粘接而成；聚对苯二甲酸乙二醇酯(PET)膜82为两层，石墨层81位于两层聚对苯二甲酸乙二醇酯(PET)82之间，石墨复合层靠近电池组一侧的聚对苯二甲酸乙二醇酯(PET)膜82为白色。As an improvement of the above-mentioned scheme, the graphite heat-conducting film 8 is a single-layer graphite layer or a graphite composite layer, and the graphite composite layer is composed of a graphite layer 81 and a polyethylene terephthalate (PET) film 82 or is glued by coating. The polyethylene terephthalate (PET) film 82 is two layers, the graphite layer 81 is located between the two layers of polyethylene terephthalate (PET) 82, and the graphite composite layer is close to the battery pack The polyethylene terephthalate (PET) film 82 on one side is white.
作为上述方案的改进，背板为聚氟乙烯复合膜(TPT)或热塑性弹性体(TPE)。As an improvement of the above solution, the backboard is polyvinyl fluoride composite film (TPT) or thermoplastic elastomer (TPE).
与现有技术相比，本发明具有如下有益效果：本发明在所述电池组3与下层乙烯-醋酸乙烯共聚物(EVA)4和背板5之间设有石墨导热膜8，由于石墨导热膜8具有超高的导热性能，热阻比铝低40％，比铜低20％，而且重量比铝轻25％，比铜轻75％，非常适合添加到组件中，它可以将电池组3在发电过程中的热量传导出去，同时将电池组3本身的热量均匀再分布，降低电池组3的热斑效应，提升太阳能电池的光电转换效率，进而提升组件的发电量。Compared with the prior art, the present invention has the following beneficial effects: the present invention is provided with a graphite heat-conducting film 8 between the battery pack 3 and the lower layer of ethylene-vinyl acetate copolymer (EVA) 4 and the back plate 5, because the graphite conducts heat Film 8 has super high thermal conductivity, 40% lower thermal resistance than aluminum, 20% lower than copper, and 25% lighter than aluminum, 75% lighter than copper, very suitable for adding to components, it can combine battery pack 3 The heat in the power generation process is conducted, and at the same time, the heat of the battery pack 3 itself is evenly redistributed, reducing the hot spot effect of the battery pack 3, improving the photoelectric conversion efficiency of the solar cell, and thereby increasing the power generation of the module.
以上所揭露的仅为本发明一种较佳实施例而已，当然不能以此来限定本发明之权利范围，因此依本发明权利要求所作的等同变化，仍属本发明所涵盖的范围。The above disclosure is only a preferred embodiment of the present invention, which certainly cannot limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention still fall within the scope of the present invention.
Claims (10)
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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