CN105553408A - Solar-photovoltaic-thermal integration module with directly compounded heat-absorbing board and glass cover board - Google Patents
Solar-photovoltaic-thermal integration module with directly compounded heat-absorbing board and glass cover board Download PDFInfo
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- 239000011521 glass Substances 0.000 title claims abstract description 30
- 230000010354 integration Effects 0.000 title 1
- 229910052751 metal Inorganic materials 0.000 claims abstract description 45
- 239000002184 metal Substances 0.000 claims abstract description 45
- 238000001816 cooling Methods 0.000 claims abstract description 25
- 239000003292 glue Substances 0.000 claims abstract description 18
- 238000009413 insulation Methods 0.000 claims abstract description 15
- 239000012530 fluid Substances 0.000 claims abstract description 12
- -1 photovoltaic cells Substances 0.000 claims abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 239000013529 heat transfer fluid Substances 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 6
- 230000009977 dual effect Effects 0.000 abstract description 3
- 230000005622 photoelectricity Effects 0.000 abstract description 3
- 208000032369 Primary transmission Diseases 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 238000005457 optimization Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 238000013082 photovoltaic technology Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S30/00—Structural details of PV modules other than those related to light conversion
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
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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
- H10F77/68—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 using gaseous or liquid coolants, e.g. air flow ventilation or water circulation
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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
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- 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
本发明公开了一种吸热板与玻璃盖板直接复合的太阳能光伏光热一体化模块，包括光电光热一体化结构体和保温背板，吸热金属板及冷却管路两者一起构成为吸热板芯，冷却管路与吸热金属板连接，冷却管路用于流动导热流体；玻璃盖板层压于吸热板芯的顶面，两者之间依次设置EVA胶、光伏电池、EVA胶、透明背板及导热粘胶；保温背板设置于吸热板芯的底面。本发明在实现太阳能光伏利用和光热利用的双重效果下，可使太阳光仅经过一次透明盖板材料透射于光伏电池上，减少了光伏电池接收太阳光的一次透射损失，增强了模块的光电性能。本发明设计简化了模块的清洁问题，方便了使用，也长期保证了模块的光电和光热性能。本发明结构紧凑，操作简单，易被用户接受。
The invention discloses a solar photovoltaic photothermal integrated module directly combined with a heat absorbing plate and a glass cover plate. The heat-absorbing plate core, the cooling pipeline is connected with the heat-absorbing metal plate, and the cooling pipeline is used to flow heat-conducting fluid; the glass cover is laminated on the top surface of the heat-absorbing plate core, and EVA glue, photovoltaic cells, EVA glue, transparent backboard and heat-conducting glue; the thermal insulation backboard is set on the bottom surface of the heat-absorbing board core. Under the dual effects of realizing solar photovoltaic utilization and photothermal utilization, the present invention can make the sunlight transmit on the photovoltaic cell only once through the transparent cover material, reduce the primary transmission loss of the photovoltaic cell receiving sunlight, and enhance the photoelectricity of the module. performance. The design of the invention simplifies the cleaning of the module, facilitates the use, and ensures the photoelectric and photothermal performance of the module for a long time. The invention has the advantages of compact structure, simple operation and easy acceptance by users.
Description
技术领域 technical field
本发明属于太阳能光伏光热综合利用设备技术领域，具体涉及一种吸热板直接与盖板复合的太阳能光伏光热一体化模块。 The invention belongs to the technical field of solar photovoltaic photothermal comprehensive utilization equipment, and in particular relates to a solar photovoltaic photothermal integrated module in which a heat absorbing plate is directly combined with a cover plate.
技术背景 technical background
近年来，我国经济规模和能源消耗都快速增加，但能源利用效率还停留在较低水平。太阳能因为其可再生以及对环境友好的优点，是重要的化石能源替代物。太阳能光伏（PV）技术是目前应用最普遍的太阳能发电技术，但随着越来越多的PV系统投入应用，其中的诸多问题也显现出来。首先，对于光伏电池来说，投射到光伏电池表面的太阳能，一般不到20%能转化成电能，而超过80%的能量或被反射或被转化为热能，使电池温度升高，导致光电转换效率下降——对于硅电池而言，工作温度每升高1℃，光电转换效率下降3～5‰，且这部分热量未能有效利用。另外，经济性差是影响PV系统推广应用的另一个重要难题。因此，一种太阳能光伏光热综合利用的新方法应运而生，即通过对光伏模块的风冷或者水冷设计达到降低光伏电池工作温度以提高光电效率，同时得到热水或者热空气，通过设计太阳能光伏光热一体化模块，实现太阳能光伏光热综合利用的目的。然而当前的太阳能光伏光热一体化模块技术，多是基于传统太阳能平板集热器而设计，尽管获得了太阳能光伏光热综合利用的效果但牺牲了太阳能光电性能的问题。传统太阳能平板集热器其玻璃盖板与吸热板是分离的，导致进行太阳能光伏光热一体化模块设计时，层压在吸热板上的光伏电池还需覆盖一层透明盖板材料，造成太阳光实际需要经过两次透射才能投射于光伏电池表面。目前透明盖板材料的透过率约在90%，仅这增加的一次透射过程，将导致光伏电池光电效率下降约10%。此外，由于光伏电池与玻璃盖板分离，光伏电池表面的透明盖板实际是处于模块空腔内，难以方便的进行清洁，会严重影响透明盖板对太阳光的透射率，进而再次降低光伏电池的光电性能。 In recent years, my country's economic scale and energy consumption have increased rapidly, but energy utilization efficiency remains at a relatively low level. Solar energy is an important alternative to fossil energy because of its renewable and environmentally friendly advantages. Solar photovoltaic (PV) technology is currently the most widely used solar power generation technology, but as more and more PV systems are put into use, many problems have emerged. First of all, for photovoltaic cells, generally less than 20% of the solar energy projected onto the surface of the photovoltaic cell can be converted into electrical energy, while more than 80% of the energy is either reflected or converted into heat energy, which increases the temperature of the battery and leads to photoelectric conversion. Efficiency drop—for silicon cells, the photoelectric conversion efficiency drops by 3 to 5‰ for every 1°C increase in operating temperature, and this part of the heat cannot be effectively utilized. In addition, poor economy is another important problem affecting the popularization and application of PV systems. Therefore, a new method of comprehensive utilization of solar photovoltaic light and heat came into being, that is, through the air-cooled or water-cooled design of the photovoltaic module to reduce the operating temperature of the photovoltaic cell to improve the photoelectric efficiency, and at the same time to obtain hot water or hot air, through the design of solar energy Photovoltaic photothermal integrated module realizes the purpose of comprehensive utilization of solar photovoltaic photothermal. However, the current solar photovoltaic photothermal integrated module technology is mostly designed based on traditional solar flat panel collectors. Although the effect of solar photovoltaic photothermal comprehensive utilization is obtained, the problem of solar photoelectric performance is sacrificed. The glass cover plate and the heat absorbing plate of the traditional solar flat collector are separated, so that when the solar photovoltaic photothermal integrated module is designed, the photovoltaic cells laminated on the heat absorbing plate need to be covered with a layer of transparent cover material. As a result, sunlight actually needs two transmissions before it can be projected on the surface of the photovoltaic cell. At present, the transmittance of the transparent cover material is about 90%. Only this increased transmission process will cause the photoelectric efficiency of photovoltaic cells to drop by about 10%. In addition, since the photovoltaic cell is separated from the glass cover, the transparent cover on the surface of the photovoltaic cell is actually in the cavity of the module, which is difficult to clean easily, which will seriously affect the transmittance of the transparent cover to sunlight, and further reduce the photovoltaic cell. photoelectric performance.
发明内容 Contents of the invention
本发明要解决的技术问题是提供一种吸热板与玻璃盖板直接复合的太阳能光伏光热一体化模块。本发明先将光伏电池层压于太阳能吸热板上，再直接层压覆盖玻璃盖板，使吸热板、光伏电池和玻璃盖板复合成为一体，最后与保温背板和保温外框密封成为一体。本发明在实现太阳能光伏利用和光热利用的双重效果下，可使太阳光仅经过一次透明盖板材料透射于光伏电池上，并且使模块光伏电池的透明盖板表面的清洁变成对模块玻璃盖板外表面进行即可，从而减少了太阳光的透射损失，增强了模块的光电性能及其长期性能的稳定，同时也使模块的使用更简便。 The technical problem to be solved by the present invention is to provide a solar photovoltaic photothermal integrated module in which a heat absorbing plate and a glass cover plate are directly combined. In the present invention, the photovoltaic cell is first laminated on the solar heat absorbing plate, and then directly laminated and covered with a glass cover plate, so that the heat absorbing plate, the photovoltaic cell and the glass cover plate are combined into one, and finally sealed with the heat preservation back plate and the heat preservation outer frame to form a One. Under the dual effects of realizing solar photovoltaic utilization and photothermal utilization, the present invention can make the sunlight transmit on the photovoltaic cell through the transparent cover material only once, and make the surface cleaning of the transparent cover plate of the module photovoltaic cell less harmful to the module glass. The outer surface of the cover plate only needs to be covered, thereby reducing the transmission loss of sunlight, enhancing the photoelectric performance of the module and its long-term performance stability, and also making the use of the module easier.
本发明通过以下技术方案解决上述技术问题， The present invention solves the above-mentioned technical problems through the following technical solutions,
一种吸热板与玻璃盖板直接复合的太阳能光伏光热一体化模块，包括光电光热一体化结构体和保温背板，其特征在于， A solar photovoltaic photothermal integrated module directly combined with a heat absorbing plate and a glass cover plate, including a photoelectric photothermal integrated structure and a thermal insulation backplane, characterized in that,
所述光电光热一体化结构体包括玻璃盖板、光伏电池、EVA胶和透明背板、导热粘胶、吸热金属板和冷却管路； The photoelectric-optical-thermal integrated structure includes a glass cover plate, a photovoltaic cell, EVA glue and a transparent backboard, a heat-conducting glue, a heat-absorbing metal plate, and a cooling pipeline;
所述吸热金属板及冷却管路两者一起构成为吸热板芯，所述冷却管路与吸热金属板连接，所述冷却管路用于流动导热流体； The heat-absorbing metal plate and the cooling pipeline together form a heat-absorbing plate core, the cooling pipeline is connected to the heat-absorbing metal plate, and the cooling pipeline is used for flowing heat-conducting fluid;
所述玻璃盖板层压于吸热板芯的顶面，两者之间依次设置EVA胶、光伏电池、EVA胶、透明背板及导热粘胶； The glass cover plate is laminated on the top surface of the heat-absorbing plate core, and EVA glue, photovoltaic cells, EVA glue, transparent backplane and heat-conducting glue are arranged in sequence between the two;
所述保温背板设置于光电光热一体化结构体的吸热板芯的底面。 The thermal insulation backboard is arranged on the bottom surface of the heat-absorbing plate core of the optoelectronic-optical-thermal integrated structure.
作为优化，所述冷却管路包括金属小管和金属集管；所述金属小管焊接于吸热金属板的背面，其两端开口分别连接在两个金属集管上；所述两个金属集管分别连接冷水进水管和热水出水管； As an optimization, the cooling pipeline includes metal small tubes and metal headers; the metal small tubes are welded to the back of the heat-absorbing metal plate, and the openings at both ends are respectively connected to two metal headers; the two metal headers Connect the cold water inlet pipe and the hot water outlet pipe respectively;
作为优选，所述冷却管路为蛇行管，焊接于吸热金属板的背面，所述蛇行管的两端分别连接冷水进水管和热水出水管； Preferably, the cooling pipeline is a serpentine pipe welded to the back of the heat-absorbing metal plate, and the two ends of the serpentine pipe are respectively connected to a cold water inlet pipe and a hot water outlet pipe;
作为优选，所述冷却管路3设于吸热金属板的内部； As a preference, the cooling pipeline 3 is arranged inside the heat-absorbing metal plate;
作为优化，所述保温背板为U型结构，所述光电光热一体化结构体固定在所述保温背板为U型结构的两端侧壁； As an optimization, the thermal insulation backboard has a U-shaped structure, and the photoelectric-optical-thermal integrated structure is fixed on the side walls at both ends of the U-shaped thermal insulation backplane;
作为优化，所述吸热金属板为表面覆盖选择性吸收涂层的金属铝板； As an optimization, the heat-absorbing metal plate is a metal aluminum plate whose surface is covered with a selective absorbing coating;
作为优化，所述导热流体为水、气体或导热油。 As an optimization, the heat transfer fluid is water, gas or heat transfer oil.
本发明通过采用吸热板与玻璃盖板直接复合的太阳能光伏光热一体化模块设计，克服了当前吸热板与玻璃盖板分离的太阳能光伏光热一体化模块技术的不足之一，在实现太阳能光伏利用和光热利用的双重效果下，可使太阳光仅经过一次透明盖板材料透射于光伏电池上，减少了光伏电池接收太阳光的一次透射损失，增强了模块的光电性能。对本发明进行清洁处理时，只需要清洗其玻璃盖板的外表面即可保证其光电性能和光热性能。而吸热板与玻璃盖板分离的太阳能光伏光热一体化模块技术，由于其光伏电池与玻璃盖板分离，光伏电池表面的透明盖板实际是处于模块空腔内，难以方便的进行清洁，因此，其存在光电性能难以长期保持良好的问题。本发明设计简化了模块的清洁问题，方便了使用，也长期保证了模块的光电和光热性能。本发明结构紧凑，操作简单，易被用户接受。 The invention overcomes one of the deficiencies of the current solar photovoltaic photothermal integrated module technology in which the heat absorbing plate and the glass cover are separated by adopting the design of the solar photovoltaic photothermal integrated module directly combined with the heat absorbing plate and the glass cover plate. Under the dual effects of solar photovoltaic utilization and photothermal utilization, the sunlight can be transmitted to the photovoltaic cell only once through the transparent cover material, reducing the primary transmission loss of the photovoltaic cell receiving sunlight and enhancing the photoelectric performance of the module. When cleaning the present invention, only the outer surface of the glass cover plate needs to be cleaned to ensure its photoelectric performance and photothermal performance. However, in the solar photovoltaic photothermal integrated module technology where the heat absorbing plate and the glass cover are separated, since the photovoltaic cell is separated from the glass cover, the transparent cover on the surface of the photovoltaic cell is actually in the cavity of the module, which is difficult to clean conveniently. Therefore, there is a problem that it is difficult to maintain good photoelectric performance for a long time. The design of the invention simplifies the cleaning of the module, facilitates the use, and ensures the photoelectric and photothermal performance of the module for a long time. The invention has the advantages of compact structure, simple operation and easy acceptance by users.
附图说明 Description of drawings
图1为本发明的横截面结构示意图； Fig. 1 is the cross-sectional structure schematic diagram of the present invention;
图2为本发明的局部放大示意图； Fig. 2 is the partially enlarged schematic view of the present invention;
图3为本发明的外观示意图。 Fig. 3 is a schematic diagram of the appearance of the present invention.
具体实施方式 detailed description
下面结合附图和实施例详细说明本发明的实施过程。 The implementation process of the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.
一种吸热板与玻璃盖板直接复合的太阳能光伏光热一体化模块，包括光电光热一体化结构体11和保温背板1， A solar photovoltaic photothermal integrated module directly combined with a heat absorbing plate and a glass cover plate, including a photoelectric photothermal integrated structure 11 and a thermal insulation backplane 1,
如图1和图2所示，所述光电光热一体化结构体11包括玻璃盖板10、光伏电池8、EVA胶7、9和透明背板6、导热粘胶5、吸热金属板4和冷却管路3， As shown in Figures 1 and 2, the optoelectronic-optical-thermal integrated structure 11 includes a glass cover plate 10, a photovoltaic cell 8, EVA glue 7, 9, a transparent backplane 6, a heat-conducting glue 5, and a heat-absorbing metal plate 4 and cooling line 3,
所述吸热金属板4及冷却管路3两者一起构成为吸热板芯，所述吸热金属板4为表面覆盖选择性吸收涂层的金属铝板；所述冷却管路3与吸热金属板4连接，所述冷却管路3用于流动导热流体；所述导热流体为水、气体或导热油； Both the heat-absorbing metal plate 4 and the cooling pipeline 3 constitute a heat-absorbing plate core, and the heat-absorbing metal plate 4 is a metal aluminum plate whose surface is covered with a selective absorbing coating; the cooling pipeline 3 and the heat-absorbing pipeline The metal plate 4 is connected, and the cooling pipeline 3 is used to flow a heat transfer fluid; the heat transfer fluid is water, gas or heat transfer oil;
作为优选，所述冷却管路3包括金属小管31和金属集管32；所述金属小管31焊接于吸热金属板4的背面，其两端开口分别连接在两个金属集管32上；所述两个金属集管32分别连接冷流体进管和热流体出管； Preferably, the cooling pipeline 3 includes a small metal tube 31 and a metal header 32; the small metal tube 31 is welded to the back of the heat-absorbing metal plate 4, and its two ends are respectively connected to the two metal headers 32; The two metal headers 32 are respectively connected to the cold fluid inlet pipe and the hot fluid outlet pipe;
作为优选，所述冷却管路3为蛇行管，焊接于吸热金属板4的背面，所述蛇行管的两端分别连接冷流体进管和热流体出管； As a preference, the cooling pipeline 3 is a serpentine tube welded to the back of the heat-absorbing metal plate 4, and the two ends of the serpentine tube are respectively connected to the cold fluid inlet pipe and the hot fluid outlet pipe;
作为优选，所述冷却管路3设于吸热金属板4的内部；增大与吸热金属板4的接触面积，增加吸热效果； Preferably, the cooling pipeline 3 is arranged inside the heat-absorbing metal plate 4; the contact area with the heat-absorbing metal plate 4 is increased to increase the heat-absorbing effect;
所述玻璃盖板10层压于吸热板芯的顶面，两者之间依次设置EVA胶9、光伏电池8、EVA胶7、透明背板6及导热粘胶5； The glass cover plate 10 is laminated on the top surface of the heat-absorbing plate core, and the EVA glue 9, the photovoltaic cell 8, the EVA glue 7, the transparent back plate 6 and the heat-conducting glue 5 are arranged in sequence between the two;
所述保温背板设置于光电光热一体化结构体的吸热板芯的底面；所述保温背板为U型结构，所述光电光热一体化结构体固定在所述保温背板为U型结构的两侧壁；保温背板起支撑和保温作用，与光电光热一体化结构体一同封闭成为一个腔体，成为一种太阳能光伏光热一体化模块，覆盖在光伏电池上的玻璃盖板也是整体模块的外观玻璃盖板。 The thermal insulation backboard is arranged on the bottom surface of the heat-absorbing plate core of the photoelectric-photothermal integrated structure; The two side walls of the type structure; the thermal insulation back plate plays the role of support and thermal insulation, and is closed together with the photoelectric photothermal integrated structure to form a cavity, which becomes a solar photovoltaic photothermal integrated module, and the glass cover covering the photovoltaic cell The plate is also the exterior glass cover of the overall module.
本发明综合考虑了太阳能光电光热综合利用、减少太阳光照射于光伏电池上的透射损失和简化光伏电池透明盖板清洁问题等方面因素，设计出了一种吸热板与玻璃盖板直接复合的太阳能光伏光热一体化模块。本发明通过合理的模块结构设计，使模块在实现太阳能光伏光热综合利用的前提下，可使太阳光仅经过一次透明盖板材料透射于光伏电池上，并且使模块光伏电池的透明盖板表面的清洁变成对模块玻璃盖板外表面进行即可，从两个重要方面减少了太阳光的透射损失，增强了模块的光电性能及稳定性，同时也使模块的使用更简便。 The invention comprehensively considers the comprehensive utilization of solar photoelectricity, light and heat, reduces the transmission loss of sunlight irradiated on the photovoltaic cell, and simplifies the cleaning of the transparent cover plate of the photovoltaic cell. solar photovoltaic photothermal integrated module. The invention uses a reasonable module structure design to enable the module to transmit sunlight on the photovoltaic cell through the transparent cover material only once on the premise of realizing the comprehensive utilization of solar photovoltaic light and heat, and make the surface of the transparent cover plate of the module photovoltaic cell The cleaning of the module can only be done on the outer surface of the glass cover of the module, which reduces the transmission loss of sunlight from two important aspects, enhances the photoelectric performance and stability of the module, and makes the use of the module easier.
本发明的工作方式是：太阳光透过玻璃盖板照射于光伏电池上，部分能量转化为电力而成为太阳能光伏利用，未转化电力部分的太阳能与照射于未覆盖电池片区域的吸热金属板上的太阳能一起被转化为被吸热金属板吸收的热能，这部分热能加热冷却管路中流动的水或其他冷却工质而形成太阳能光热利用，因此，整体上看，该模块就可实现太阳能的光伏光热综合利用。而且值得注意的是，当模块需要进行清洁时，只需要清洗其玻璃盖板的外表面即可保证其光电性能和光热性能。 The working method of the present invention is: sunlight shines on the photovoltaic cell through the glass cover plate, and part of the energy is converted into electricity to be used by solar photovoltaics; the unconverted part of the solar energy is irradiated on the heat-absorbing metal plate not covered by the cell area The solar energy on the surface is converted into heat energy absorbed by the heat-absorbing metal plate, and this part of heat energy heats the water or other cooling working fluid flowing in the cooling pipeline to form solar thermal utilization. Therefore, on the whole, the module can realize Photovoltaic and thermal comprehensive utilization of solar energy. And it is worth noting that when the module needs to be cleaned, it only needs to clean the outer surface of its glass cover to ensure its photoelectric performance and photothermal performance.
特别地，本发明玻璃盖板既是光伏电池的透明盖板，同时也是模块整体框架的透明盖板，减少了太阳光到达光伏电池表面的投射路径，同时使光伏电池的透明盖板表面的清洁变成对模块玻璃盖板外表面进行即可，从两个重要方面减少了太阳光的透射损失，增强了模块的光电性能及其长期性能的稳定，同时也使模块的使用更简便。 In particular, the glass cover of the present invention is not only the transparent cover of the photovoltaic cell, but also the transparent cover of the overall frame of the module, which reduces the projection path of sunlight reaching the surface of the photovoltaic cell, and at the same time makes the surface of the transparent cover of the photovoltaic cell more clean. The outer surface of the paired module glass cover can reduce the transmission loss of sunlight from two important aspects, enhance the photoelectric performance of the module and its long-term performance stability, and also make the use of the module easier.
此外，保温背板与光电光热一体化结构体一同封闭成的空腔，既可以吸收太阳热能为金属小管提供热能，又可以作为保温腔，避免金属小管散热过快。 In addition, the cavity formed by the thermal insulation backboard and the integrated structure of photoelectricity, light and heat can not only absorb solar heat to provide thermal energy for the small metal tube, but also serve as a thermal insulation cavity to prevent the small metal tube from dissipating heat too quickly.
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