TWI540745B - A method of packaging a solar receiver with secondary optical elements - Google Patents
A method of packaging a solar receiver with secondary optical elements Download PDFInfo
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- TWI540745B TWI540745B TW103122629A TW103122629A TWI540745B TW I540745 B TWI540745 B TW I540745B TW 103122629 A TW103122629 A TW 103122629A TW 103122629 A TW103122629 A TW 103122629A TW I540745 B TWI540745 B TW I540745B
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- 230000003287 optical effect Effects 0.000 title claims description 118
- 238000000034 method Methods 0.000 title claims description 33
- 238000004806 packaging method and process Methods 0.000 title claims description 27
- 229920001296 polysiloxane Polymers 0.000 claims description 60
- 239000000758 substrate Substances 0.000 claims description 27
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 12
- 239000010931 gold Substances 0.000 claims description 4
- 229910052737 gold Inorganic materials 0.000 claims description 4
- 238000005476 soldering Methods 0.000 claims description 2
- 238000000151 deposition Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 description 13
- 239000011521 glass Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910001111 Fine metal Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012536 packaging technology Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 235000015096 spirit Nutrition 0.000 description 1
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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
- Y02E10/52—PV systems with concentrators
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Description
本發明係關於一種太陽能接收器之封裝方法，尤指一種透過模具而得以一次性且大量地將二次光學元件形成於太陽能電池之上，並同時將該太陽能電池封裝之方法。The present invention relates to a method of packaging a solar receiver, and more particularly to a method of forming a secondary optical element over a solar cell through a mold and simultaneously encapsulating the solar cell.
太陽能發電的最基本運作方式係將陽光照射於太陽能電池的表面，而現已有一種為了提升發電效率，而利用聚光透鏡聚集更大量光能的聚光型太陽能電池模組。這些聚光型太陽能電池模組隨著聚光倍率之提升，以及配合自動化生產，可使太陽能電池之尺寸逐漸縮小化，使電池材料使用可更加節省。The most basic mode of operation of solar power is to illuminate the surface of solar cells. There is now a concentrating solar cell module that uses a concentrating lens to concentrate a larger amount of light energy in order to improve power generation efficiency. With the increase of the concentrating ratio and the automatic production, these concentrating solar cell modules can gradually reduce the size of the solar cell, and the battery material can be used more.
在實務上，於聚光型太陽能電池模組當中使用小面積的太陽能電池時，需搭配使用二次光學元件，例如球透鏡，才能縮小聚光光點、增加太陽光角度容忍度，但現有球透鏡的固定方式較為困難繁雜。目前一般的二次光學元件可分為金屬材料或玻璃等高透光且具高硬度之零件，若是使用金屬製作二次光學元件，其在安裝時必須使用螺絲鎖固，需耗費大量人工與螺絲等零組件；若二次光學元件為玻璃材質，則其與電路板上之太陽電池晶片結合時，必須先進行第一次光學膠點膠以保護太陽電池晶片表面與細金屬導電線。In practice, when using a small area of solar cells in a concentrating solar cell module, it is necessary to use a secondary optical component, such as a ball lens, in order to reduce the spotlight spot and increase the solar angle tolerance, but the existing ball The way the lens is fixed is more difficult and complicated. At present, the general secondary optical components can be divided into high-transmission and high-hardness parts such as metal materials or glass. If secondary optical components are made of metal, they must be screwed during installation, which requires a lot of labor and screws. If the secondary optical component is made of glass, when it is combined with the solar cell wafer on the circuit board, the first optical glue dispensing must be performed to protect the surface of the solar cell wafer and the fine metal conductive wire.
請參考第1A~1C圖，係為先前技術封裝太陽能接收器之二次光學元件之方法示意圖；如圖所示，其係先於基板50上設置太陽能電池51，並透過金線而使太陽能電池51與基板50之電路達成電性連接，而太陽能電池51以及金線等元件則透過第一光學矽膠52經烘烤而固化後，封裝於基板50之上。Please refer to FIGS. 1A-1C for a schematic diagram of a method for packaging a secondary optical component of a solar receiver according to the prior art; as shown in the figure, a solar cell 51 is disposed on the substrate 50, and the solar cell is passed through the gold wire. 51 is electrically connected to the circuit of the substrate 50, and components such as the solar cell 51 and the gold wire are cured by baking through the first optical silicone 52, and then packaged on the substrate 50.
接著，其在已固化的第一光學矽膠52之上再塗布少量的第二光學矽膠53，然後將作為二次光學元件的球透鏡54放置於第二光學矽膠53之上。其次再經過一次烘烤，使第二光學矽膠53形成已固化第二光學矽膠55，進而使得球透鏡54被固定於太陽能電池51之上。Next, a small amount of the second optical silicone 53 is applied over the cured first optical silicone 52, and then the ball lens 54 as a secondary optical element is placed on the second optical silicone 53. Next, after another baking, the second optical silicone 53 forms the cured second optical silicone 55, so that the ball lens 54 is fixed on the solar battery 51.
上述方法的即是在安裝玻璃材質的二次光學元件時，先進行第一次光學矽膠封裝以保護太陽能電池之晶片本體之表面，以及與之相連接之金線，使這些元件不至於被二次光學元件壓毀、受損。等第一次塗布之光學矽膠固化之後，再塗布一次光學矽膠與放置二次光學元件，而後進行第二次矽膠固化製程，因此製程上不但工序較多，製作時間也較長，特別是不可避免地經過兩次的矽膠烘烤作業，並不利量產化技術開發。In the above method, when the secondary optical component of the glass material is mounted, the first optical silicone package is firstly protected to protect the surface of the wafer body of the solar cell, and the gold wire connected thereto, so that these components are not quilted. The secondary optics are crushed and damaged. After the first application of the optical silicone is cured, the optical silicone is coated once and the secondary optical component is placed, and then the second silicone curing process is performed. Therefore, not only the process but also the manufacturing time is long, especially inevitably. After two times of baking and baking, it is not beneficial to the development of production technology.
因此，若能提出一種新穎的封裝方法，使聚光型太陽能電池模組當中的二次光學元件被快速地安裝於太陽能電池之上，並且降低其製作成本及難度，則對於聚光型太陽能模組的發展與推廣有很大的幫助。Therefore, if a novel packaging method can be proposed to enable the secondary optical component in the concentrating solar cell module to be quickly mounted on the solar cell and reduce the manufacturing cost and difficulty, the concentrating solar mode is The development and promotion of the group is of great help.
本發明之主要目的，係提供一種具有二次光學元件之太陽能接收器之封裝方法，其使用開設有特殊形狀之模槽之模具，透過填充入光學矽膠的技術手段，讓固化後的光學矽膠不但具有二次光學元件之特徵，得以作為球透鏡等二次光學元件之用，同時也完成了對太陽能電池之封裝，整體過程僅要經過一次烘烤就可完成，大幅縮短了封裝所需的時間。The main object of the present invention is to provide a solar receiver packaging method with a secondary optical component, which uses a mold having a special-shaped cavity, and through the technique of filling the optical silicone, the cured optical silicone is not only cured. It has the characteristics of secondary optical components and can be used as a secondary optical component such as a ball lens. At the same time, it also completes the packaging of solar cells. The whole process can be completed only by one baking, which greatly shortens the time required for packaging. .
本發明之另一目的，係提供一種具有二次光學元件之太陽能接收器之封裝方法，其並不受太陽能電池之數量多寡以及基板之面積大小而影響封裝速度，有利於製作具備大量太陽能接收器之聚光型太陽能模組，在製作成本的降低上具有優勢。Another object of the present invention is to provide a solar receiver packaging method with secondary optical components, which is not affected by the number of solar cells and the size of the substrate, thereby facilitating the fabrication of a large number of solar receivers. The concentrating solar module has an advantage in reducing the manufacturing cost.
本發明之再一目的，係提供一種具有二次光學元件之太陽能接收器之封裝方法，其係使用光學矽膠作為二次光學元件之素材，其良好的光學特性在能夠有效取代玻璃製之球透鏡。Still another object of the present invention is to provide a solar receiver packaging method having a secondary optical component, which uses optical silicone as a material of a secondary optical component, and which has good optical characteristics and can effectively replace a glass lens made of glass. .
為了達到上述之目的，本發明揭示了一種具有二次光學元件之太陽能接收器之封裝方法，其係包含步驟：注入光學矽膠於一模具之中，該模具具有至少一模槽，該模槽之內側面具有向下凹陷之特徵，該光學矽膠係填滿該模槽；放置一基板於該模具之上，該基板之一面係固定有至少一太陽能電池，該太陽能電池係對應於該模槽而向下浸於該光學矽膠中；固化該光學矽膠，使該太陽能電池密封於固化後之該光學矽膠中；以及移除該模具，形成該太陽能接收器；其中，該光學矽膠於該模槽之內形成該二次光學元件於該太陽能電池之上，使入射光源可經該二次光學元件之聚焦而集中照射於該太陽能電池之表面。In order to achieve the above object, the present invention discloses a method for packaging a solar receiver having a secondary optical component, comprising the steps of: injecting an optical silicone into a mold, the mold having at least one cavity, the cavity The inner side surface has a feature of downwardly recessing, and the optical silicone glue fills the cavity; a substrate is placed on the mold, and at least one solar cell is fixed on one side of the substrate, and the solar battery system corresponds to the cavity Dipping downward in the optical silicone; curing the optical silicone to seal the solar cell in the cured optical silicone; and removing the mold to form the solar receiver; wherein the optical silicone is in the cavity The secondary optical component is formed on the solar cell, so that the incident light source can be focused on the surface of the solar cell by focusing the secondary optical component.
10‧‧‧基板10‧‧‧Substrate
11‧‧‧太陽能電池11‧‧‧Solar battery
12‧‧‧金線12‧‧‧ Gold Line
20‧‧‧模具20‧‧‧Mold
21‧‧‧模槽21‧‧ ‧ cavity
22‧‧‧內側面22‧‧‧ inside
30‧‧‧光學矽膠30‧‧‧Optical silicone
30A‧‧‧已固化光學矽膠30A‧‧‧cured optical silicone
31‧‧‧二次光學元件31‧‧‧Secondary optical components
31’‧‧‧半球體31’‧‧‧hemisphere
32‧‧‧上頂點32‧‧‧Upper vertex
50‧‧‧基板50‧‧‧Substrate
51‧‧‧太陽能電池51‧‧‧ solar cells
52‧‧‧第一光學矽膠52‧‧‧First optical silicone
53‧‧‧第二光學矽膠53‧‧‧Second optical silicone
54‧‧‧球透鏡54‧‧‧Ball lens
55‧‧‧已固化第二光學矽膠55‧‧‧Cured second optical silicone
R‧‧‧球半徑R‧‧‧sphere radius
第1A~1C圖：其係為先前技術封裝太陽能接收器之二次光學元件之方法示意圖；1A~1C: a schematic diagram of a method for packaging a secondary optical component of a solar receiver in a prior art;
第2圖：其係為本發明一較佳實施例之步驟示意圖，用以表示填充光學矽膠於模具之模槽中；2 is a schematic view showing the steps of a preferred embodiment of the present invention for filling an optical silicone in a cavity of a mold;
第3圖：其係為本發明一較佳實施例之步驟示意圖，用以表示光學矽膠係填滿於模具之模槽中；Figure 3 is a schematic view showing the steps of a preferred embodiment of the present invention for indicating that the optical silicone is filled in the cavity of the mold;
第4圖：其係為本發明一較佳實施例之步驟示意圖，用以表示放置具有太陽能電池之基板於模具之上；Figure 4 is a schematic view showing the steps of a preferred embodiment of the present invention for placing a substrate having a solar cell on a mold;
第5圖：其係為本發明一較佳實施例之步驟示意圖，用以表示太陽能電池封裝於固化的光學矽膠之中；Figure 5 is a schematic view showing the steps of a preferred embodiment of the present invention for indicating that a solar cell is packaged in a cured optical silicone;
第6圖：其係為本發明一較佳實施例之步驟示意圖，用以表示移除模具後之太陽能接收器之外觀；Figure 6 is a schematic view showing the steps of a preferred embodiment of the present invention for indicating the appearance of the solar receiver after removing the mold;
第7圖：其係為本發明一較佳實施例所製作具有陣列特徵之太陽能接收器模組之示意圖；Figure 7 is a schematic view showing a solar receiver module having an array feature according to a preferred embodiment of the present invention;
第8圖：其係為本發明一較佳實施例之結構示意圖，用以表示二次光學元件之結構及尺寸比例；以及Figure 8 is a schematic structural view of a preferred embodiment of the present invention for indicating the structure and size ratio of the secondary optical component;
第9圖：其係為本發明一較佳實施例之結構示意圖，用以表示子彈型二次光學元件。Figure 9 is a schematic view showing the structure of a preferred embodiment of the present invention for representing a bullet-type secondary optical element.
為使本發明之特徵及所達成之功效有更進一步之瞭解與認識，謹佐以較佳之實施例及配合詳細之說明，說明如後：For a better understanding and understanding of the features and advantages of the present invention, the preferred embodiments and the detailed description are described as follows:
本發明之具有二次光學元件之太陽能接收器之封裝方法，其於步驟上係依序為：The method for packaging a solar receiver with a secondary optical component according to the present invention is in the following steps:
步驟S1：注入光學矽膠於一模具之中，該模具具有至少一模槽，該模槽之內側面係具有向下凹陷之特徵，該光學矽膠係填滿該模槽；Step S1: injecting an optical silicone into a mold, the mold has at least one cavity, and the inner side of the cavity has a feature of downward depression, and the optical silicone fills the cavity;
步驟S2：設置一基板於該模具之上，該基板之一面係固定有至少一太陽能電池，該太陽能電池係對應於該模槽而向下浸於該光學矽膠中；Step S2: setting a substrate on the mold, one surface of the substrate is fixed with at least one solar cell, and the solar cell is immersed in the optical silicone corresponding to the cavity;
步驟S3：固化該光學矽膠，使該太陽能電池密封於固化後之該光學矽膠中；以及Step S3: curing the optical silicone to seal the solar cell in the optical silicone after curing;
步驟S4：移除該模具，形成該太陽能接收器。Step S4: removing the mold to form the solar receiver.
依據上述之步驟，首先請參考第2圖，本發明係利用模具為一次性完成封裝之媒介，此模具20開設有模槽21，而模槽21的開設數量可視太陽能接收器所具有的太陽能電池數量而定。較佳的設計係將模具20之模槽21以陣列的形式開設，以一次性完成陣列式太陽能接收器的封裝。According to the above steps, first referring to FIG. 2, the present invention utilizes a mold to complete the encapsulation medium in one time. The mold 20 is provided with a cavity 21, and the number of the cavities 21 can be seen as a solar cell of the solar receiver. Depending on the quantity. The preferred design is to open the cavities 21 of the mold 20 in an array to complete the encapsulation of the array solar receiver in one operation.
本發明於一較佳實施例中，模槽21的內側面22係具有向下凹陷之特徵，較佳的選擇為圓頂形。此形狀特徵係為了形成二次光學元件，例如球透鏡，因此將模槽21開設為向下凹陷之圓頂形外觀，使後續之成品得以具備球透鏡之功能特徵，能夠縮小聚光光點而增加太陽能接收器的太陽光角度容忍度，以及降低聚光型太陽能模組的體積。In a preferred embodiment of the invention, the inner side 22 of the cavity 21 has a feature of downward depression, preferably a dome shape. This shape feature is to form a secondary optical element, such as a ball lens, so that the cavity 21 is opened to have a dome-shaped appearance that is recessed downward, so that the subsequent finished product can have the functional features of the ball lens, and can reduce the spotlight spot. Increase the solar angle tolerance of the solar receiver and reduce the volume of the concentrating solar module.
本發明係將未固化的光學矽膠30填充於模槽21，使其呈現如第3圖所示之填滿狀態，然後再如第4圖所示，將基板10放置於模具20之上。此基板10的一面固定有至少一太陽能電池11，而由於是將該面朝向模具20而將基板放置於模具20之上，且太陽能電池11的位置又是對應於模具20所開設的模槽21，並且單一之太陽能電池11係對應於單一之模槽21，因此，這些對應於模槽21的太陽能電池11就會向下浸於未固化的光學矽膠30之中。In the present invention, the uncured optical silicone 30 is filled in the cavity 21 so as to be filled as shown in Fig. 3, and then, as shown in Fig. 4, the substrate 10 is placed on the mold 20. At least one solar cell 11 is fixed to one surface of the substrate 10, and the substrate is placed on the mold 20 by facing the surface toward the mold 20, and the position of the solar cell 11 is corresponding to the cavity 21 opened by the mold 20. And the single solar cell 11 corresponds to a single cavity 21, and therefore, the solar cells 11 corresponding to the cavity 21 are immersed downward in the uncured optical silicone 30.
前述之基板10係為電路板，其設置有太陽能電池11之該面係具有電路。而除了預先將太陽能電池11焊接於基板10之上，導電用之金線12亦已固定於基板10之上，這些金線12係與太陽能電池11相連接，並且與基板10之電路電性連接，以使電流導通。The substrate 10 described above is a circuit board on which the surface of the solar cell 11 is provided with an electric circuit. In addition to soldering the solar cell 11 on the substrate 10 in advance, the conductive gold wire 12 is also fixed on the substrate 10, and the gold wires 12 are connected to the solar cell 11 and electrically connected to the circuit of the substrate 10. To make the current conduct.
在將太陽能電池11浸入未固化的光學矽膠30後，接著以高溫烘烤的方式而固化光學矽膠30，使太陽能電池11以及所相連之金線12密封於已固化光學矽膠30A中，如第5圖所示。After immersing the solar cell 11 in the uncured optical silicone 30, the optical silicone 30 is then cured by high temperature baking, so that the solar cell 11 and the connected gold wire 12 are sealed in the cured optical silicone 30A, as in the fifth. The figure shows.
在此步驟中，烘烤模具20的溫度係依所使用的光學矽膠性質而定，而烘烤時間約為80~100分鐘，較佳的烘烤時間為90分鐘，此階段為本發明所揭示之封裝方法中，主要耗費時間的部分，此時間相較於習之技術的兩次烘烤，已顯著地減少，因此可以滿足產業界的大量產生需求，有效地縮短製作的工時。In this step, the temperature of the baking mold 20 depends on the optical silicone properties used, and the baking time is about 80 to 100 minutes, and the preferred baking time is 90 minutes. This stage is disclosed in the present invention. In the packaging method, the main time-consuming part, which is significantly reduced compared to the two-bake of the technology, can meet the large demand of the industry and effectively shorten the man-hours of production.
光學矽膠30經烘烤而形成已固化光學矽膠30A，接著就可將模具20移除，僅留下如第6圖所示之太陽能接收器之成品。其中每一個太陽能接收器之單元都具有一個太陽能電池11，此太陽能電池11以及與其相連接之金線12皆被封裝於已固化光學矽膠30A當中，而此已固化光學矽膠30A之外形又受前述第2圖所示之模具20之模槽21形狀影響。基於模槽21之內側面22構成向下凹陷之圓頂形，使未固化的光學矽膠30經內側面22塑形，而於固化後形成二次光學元件31於太陽能電池11之上。透過此具有球透鏡特徵之二次光學元件31的聚焦功效，來自太陽照射之入射光源可經二次光學元件31之聚焦而集中照射至太陽能電池11之表面；換句話說，搭配菲涅爾透鏡以及二次光學元件，太陽光得以在聚光型太陽能模組中被進一步縮小聚光光點面積，增加了太陽光偏移角度容忍度。The optical silicone 30 is baked to form a cured optical silicone 30A, which can then be removed, leaving only the finished solar receiver as shown in FIG. Each of the solar receiver units has a solar cell 11 , and the solar cell 11 and the gold wire 12 connected thereto are encapsulated in the cured optical silicone 30A, and the cured optical silicone 30A is shaped by the foregoing. The shape of the cavity 21 of the mold 20 shown in Fig. 2 is affected. The uncured optical silicone 30 is shaped by the inner side surface 22 based on the inner side surface 22 of the cavity 21, and the secondary optical element 31 is formed on the solar cell 11 after curing. Through the focusing effect of the secondary optical element 31 having the characteristics of the spherical lens, the incident light source from the sun illumination can be concentratedly irradiated onto the surface of the solar cell 11 by focusing of the secondary optical element 31; in other words, with a Fresnel lens As well as secondary optics, sunlight can be further reduced in the concentrating solar module to increase the spot area of the spotlight, increasing the tolerance of the sun's offset angle.
第7圖係呈現本發明一較佳實施例在量產時的優勢；如前所述，本發明較佳的設計係將模具20之模槽21以陣列的形式開設，以一次性完成陣列式太陽能接收器的封裝，使單一基板10上具有大量的太陽能電池11，同時分別具備作為二次光學元件的已固化光學矽膠30A。而若要發展大面積電路板封裝技術，本發明的技術亦不會受到限制，只要模具的製作尺寸調整與基板的尺寸相當，光學元件封裝製作程序並不會因為基板面積增加或太陽能電池的數量增加，而增加額外的工序與工時。Figure 7 is a view showing the advantages of a preferred embodiment of the present invention in mass production; as described above, the preferred design of the present invention opens the mold grooves 21 of the mold 20 in an array to complete the array in one shot. The package of the solar receiver has a large number of solar cells 11 on a single substrate 10, and has a cured optical silicone 30A as a secondary optical element, respectively. However, in order to develop a large-area circuit board packaging technology, the technology of the present invention is not limited as long as the size adjustment of the mold is equivalent to the size of the substrate, and the optical component packaging manufacturing process does not increase the substrate area or the number of solar cells. Increase, while adding additional processes and man-hours.
第8圖係為本發明關於二次光學元件與太陽能電池11之相對位置之揭示；如圖所示，光學矽膠經固化而形成二次光學元件31，其在上半部(斜線區域)為一半球體31’，其球半徑為R，此類球體形狀不僅於製作模具加工時可省時省工，且於光學上可做為二次聚光透鏡，將光線集中於太陽能電池11之上。半球體31’的下平面中心處於太陽能電池11收光區中心的正上方，且半球體31’下平面與太陽能電池11表面的距離等於半球體31’本身的半徑R，意即二次光學元件31的上頂點32與太陽能電池接收光線之表面之距離為2R，並且也可看出二次光學元件31內部實質隱含了一個直徑為2R之球體。二次光學元件31在半球體31’下方之外圍區域之形狀不拘，因此本發明由光學矽膠固化所形成的二次光學元件最基本的形狀為子彈型，如第9圖所示，而子彈型下半部可隨著製程調整成各種形狀。Figure 8 is a disclosure of the relative position of the secondary optical element to the solar cell 11 of the present invention; as shown, the optical silicone is cured to form a secondary optical element 31 which is half in the upper half (hatched area) The sphere 31' has a spherical radius of R. Such a sphere shape can save time and labor not only when the mold is processed, but also optically as a secondary concentrating lens to concentrate the light on the solar cell 11. The lower plane center of the hemisphere 31' is directly above the center of the light receiving region of the solar cell 11, and the distance between the lower plane of the hemisphere 31' and the surface of the solar cell 11 is equal to the radius R of the hemisphere 31' itself, that is, the secondary optical element. The distance between the upper vertex 32 of 31 and the surface of the solar cell receiving light is 2R, and it can also be seen that the inside of the secondary optical element 31 substantially implies a sphere having a diameter of 2R. The shape of the secondary optical element 31 in the peripheral region below the hemisphere 31' is not limited. Therefore, the most basic shape of the secondary optical element formed by curing the optical silicone of the present invention is a bullet type, as shown in Fig. 9, and the bullet type The lower half can be adjusted to various shapes with the process.
綜上所述，本發明詳細揭示了一種具有二次光學元件之太陽能接收器之封裝方法，其考量到現有技術在量產上的困難，特別是為了保護太陽能電池的晶片本體以及所相連接之金線不會被二次光學元件壓毀、受損，因此在封裝階段需以兩階段進行，不但工序較多且製作時間較長，故本發明透過在特定模具灌入光學矽膠的方式，待太陽能電池被浸入光學矽膠後，再將光學矽膠烘烤固化，最後移除模具，使固化的光學矽膠一次性完成二次光學元件的製作以及元件的保護；同時，本發明之封裝方法並不會受到大面積製作太陽能接收器模組而增加難度，符合產業需求。基於本發明所能提供之低成本，以及低製作難度的優勢，總結而言，本發明確實提供了一種充分展現經濟與實用價值之一種具有二次光學元件之太陽能接收器之封裝方法。In summary, the present invention discloses in detail a packaging method of a solar receiver having a secondary optical component, which considers the difficulty in mass production of the prior art, in particular, to protect the wafer body of the solar cell and the connected The gold wire is not crushed and damaged by the secondary optical component, so it needs to be carried out in two stages in the packaging stage, which not only has many processes but also has a long production time, so the present invention treats the optical silicone in a specific mold. After the solar cell is immersed in the optical silicone, the optical silicone is baked and cured, and finally the mold is removed, so that the cured optical silicone can complete the fabrication of the secondary optical component and the protection of the component at one time; at the same time, the packaging method of the present invention does not It is difficult to make a large-scale production of solar receiver modules, which meets the needs of the industry. Based on the low cost that can be provided by the present invention and the advantages of low manufacturing difficulty, in summary, the present invention does provide a packaging method for a solar receiver having secondary optical components that fully demonstrates economic and practical value.
惟以上所述者，僅為本發明之較佳實施例而已，並非用來限定本發明實施之範圍，舉凡依本發明申請專利範圍所述之形狀、構造、特徵及精神所為之均等變化與修飾，均應包括於本發明之申請專利範圍內。The above is only the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and the variations, modifications, and modifications of the shapes, structures, features, and spirits described in the claims of the present invention. All should be included in the scope of the patent application of the present invention.
10‧‧‧基板 10‧‧‧Substrate
11‧‧‧太陽能電池 11‧‧‧Solar battery
12‧‧‧金線 12‧‧‧ Gold Line
30A‧‧‧已固化光學矽膠 30A‧‧‧cured optical silicone
31‧‧‧二次光學元件 31‧‧‧Secondary optical components
Claims (10)
注入光學矽膠於一模具之中，該模具具有至少一模槽，該模槽之內側面具有向下凹陷之特徵，該光學矽膠係填滿該模槽；
放置一基板於該模具之上，該基板之一面係固定有至少一太陽能電池，該太陽能電池係對應於該模槽而向下浸於該光學矽膠中；
固化該光學矽膠，使該太陽能電池密封於固化後之該光學矽膠中；以及
移除該模具，形成該太陽能接收器；
其中，該光學矽膠於該模槽之內形成該二次光學元件於該太陽能電池之上，使入射光源可經該二次光學元件之聚焦而集中照射於該太陽能電池之表面。A packaging method for a solar receiver with secondary optical components, comprising the steps of:
Injecting an optical silicone into a mold, the mold having at least one cavity, the inner side of the cavity having a feature of downwardly recessing, the optical silicone filling the cavity;
Depositing a substrate on the mold, one surface of the substrate is fixed with at least one solar cell, and the solar cell is immersed downward in the optical silicone corresponding to the cavity;
Curing the optical silicone to seal the solar cell in the cured optical silicone; and removing the mold to form the solar receiver;
The optical silicone is formed in the cavity to form the secondary optical component on the solar cell, so that the incident light source can be focused on the surface of the solar cell by focusing the secondary optical component.
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