M404956 五、新型說明： 【新型所屬之技術領域j 本新型是有關於一種太陽能板，且特別是有關於/ 種太陽能板聚光裝置。 【先前技術】 聚光型太陽能發電系統的用途在於利用光學模組 提升系統的光電轉換欵率，進而降低發電成本。/般聚 光型太陽能發電系統依照集光方式，可分為透射式與反 射式聚光鏡兩種。其中透射式聚光為利用夫瑞乃透鏡 (Fresnel，簡稱夫氏透鏡)達成聚光之目標。夫氏透鏡上 排列了許多小棱鏡，每一個稜鏡的角度都經過設計，使 得所有的稜鏡都能把平行入射的光線折向鏡後的共同 焦點，而達成與凸透鏡同樣的效果。然而，夫氏透鏡集 光會因聚光不均勻而產生熱點，使得太陽電池過熱而受 傷；因此’集光器一般須使用均光器來解決此一問題， 反而徒增成本。 另一方面’反射式聚光鏡為利用反射鏡收集太陽光 至太陽能電池上’目前運用反射鏡集光的系統有採線聚 焦之抛物線溝槽型（parabolic trough)、點聚焦之抛物甸 碟盤型（parabolic dish)或凱薩格林面鏡組等不同形式。 拋物線槽型集光器是採用高反射率的抛物面’調整拋物 反射面的仰角’使太陽光經拋物面反射到直線型太陽能 4 板’抛物面碟盤型集光器是藉由控制碟型拋物反射面， ，得光線經由反射面反射後聚集在太陽能板上；至於凯 a格林面鏡組是先利用抛物面鏡將入射光聚焦到雙曲 面鏡背面的焦點上，之後利用雙曲面鏡將光線再次聚焦 到其正面的焦點上。惟，反射式的聚光裝置雖不需要如 同透射式的聚光裝置一般加設均光器，然其光電轉換效 率仍顯不彰。 【新型内容】 因此，本新型之一技術態樣是在提供一種太陽能板 聚光裝置，以反射式聚光鏡為基礎架構，經設計而提升 其光電轉換效率。 依據本技術態樣一實施方式’提出一種太陽能板聚 光裝置’包括一拋物面聚光鏡、一漫射室以及一太陽能 板。拋物面聚光鏡於聚光側定義一焦點，其係用以將光 線朝焦點凝聚。漫射室位於拋物面聚光鏡之聚光側與焦 點間。漫射室具有一開口、一底壁以及一侧壁。開口係 用以接收拋物面聚光鏡所反射凝聚之光線，底壁位於開 口之相對位置；側壁則位於底壁與開口間，側壁係用以 收集抛物面聚光鏡所漫射之光線。最後，太陽能板裝設 於漫射室内之底壁，其係用以接收拋物面聚光鏡所反射 凝聚及漫射之光線。 依據本技術態樣其他實施方式，上述漫射室可為一 甕形漫射室’特別是漫射室之側剖面可為六角形，亦即 5 M404956 面法線方向之夾角的餘弦。換句話說，理想的漫射現象 會遵守蘭伯特（Lambert)餘弦定律：4 cos 0。其中， 心為入射光，/5為漫射光。 光線漫射時，每個角度都漫射出同樣大小的漫射 光，而與觀察者位置無關。由上式可知，在某方向之輻 射率是指在此方向投影的單位面積，而投影面積正比於 投影方向與面法線方向間之夾角餘弦。因此，對於一個 理想漫射體而言，在輻射率的測量中，這兩個餘弦因數 互相抵鎖，使得測量之輕射率與測量方向無關。而在實 際情況中，大部分之光源都十分接近理想漫射體。 因此，本實施方式之漫射室300所漫射出的光線， 可作為太陽能發電之理想光源。基於上述，本實施方式 之漫射室300可使經由拋物面聚光鏡200所聚集的入射 光101進入漫射室300中，再經多次漫射，使光能有效 的入射到太陽能板100中。 請參考第2圖，第2圖是第1圖之漫射室300於另 一實施方式之結構示意圖。第2圖中，漫射室300在設 計上，具有一開口 330、一底壁310以及一側壁320。 開口 330係用以接收拋物面聚光鏡200所反射凝聚之光 線，底壁310位於開口 330之相對位置；側壁320則位 於底壁310與開口 330間，側壁320係用以收集拋物面 聚光鏡200所漫射之光線。值得注意的是，經電腦模擬 及實作驗證，漫射室300可為側剖面呈類似正六角形的 結構。亦即，第2圖中各轉角之角度為110-120度。換 7 M404956 句話說，侧壁320可由一上段壁321及一下段壁322 所組成。值得注意的是，上段壁321與底壁310夾角可 為120度，而上段壁321與下段壁322夾角可為110度。 此外，底壁310之長度大於側壁320之整體高度；換句 話說，底壁310用以承載太陽能板1〇〇的剖面長度（垂 直於入射光101)’大於相同剖面下，側壁320的剖面高 度（平行於入射光101);這是因為在實際應用上，通常 需整合大面積太陽能板100,此時需增大漫射室300腔 體的體積，並且維持各角度接近120度，使得經由拋物 面聚光鏡200進入漫射室300的光線仍可有高的漫射機 率0 最後’本實施方式以一塊被使用過一段時間之非晶 矽太陽能板為例，具體實驗本實施方式之太陽能板聚光 裝置所提升之光電轉換效率如下： 首先，在實驗參數上，漫射室300之面積為寬度 90mm、長度850mm，拋物面聚光鏡200的反射面積為 寬度380mm、長度850mm。拋物面聚光鏡200的反射 面積減去漫射室300之面積等於實際有效反射面積為 246500mm2 ° 接下來，參考第3圖，第3圖是習知之太陽能板的 結構示意圖。第3圖中，入射光101直接照射在太陽能 板100上，取得光電轉換效率8.95%以作為實驗之基準 值0 然後，參考第4圖，第4圖是習知之反射式的太陽 8 M404956 能板聚光裝置的結構示意圖。第4圖中，太陽能板100 被設置於拋物面聚光鏡200的焦點位置；而且，太陽能 板100外罩設漫射室300以求儘量貼近本實施方式之結 構。然而，其亦僅取得光電轉換效率9.21%。 請繼續參考第5圖，第5圖是本揭示内容又一實施 方式之反射式的太陽能板聚光裝置的結構示意圖。第5 圖中，太陽能板100如本實施方式之教示，被安置在拋 物面聚光鏡200之聚光側與焦點210間。經實驗，太陽 能板100放置於焦距内，而非在焦點210上，使太陽能 板100.上聚焦的溫度下降，進而取得了光電轉換效率 19.06%，顯見其相對於習知諸設計之長足進步。 最後，本實施方式以第1圖及第2圖所教示之結構 進行實驗，不僅將太陽能板1〇〇放置於焦距内，且外加 一側剖面為近似正六角形之漫射室300。由於漫射室 300使得較多不同方向的光線射入太陽能板100上，而 增加漫射機率，進而取得高達22.92%的光電轉換效 率。換句話說，其發電效率比第3圖所示之一般太陽能 板提升了 256%。 雖然本新型已以實施方式揭露如上，然其並非用以 限定本新型，任何熟習此技藝者，在不脫離本新型之精 神和範圍内，當可作各種之更動與潤飾，因此本新型之 保護範圍當視後附之申請專利範圍所界定者為準。 【圖式簡單說明】 9 M404956 為讓本新型之上述和其他目的、特徵、優點與實施 例能更明顯易懂，所附圖式之說明如下： 第1圖是本揭示内容一實施方式之太陽能板聚光 裝置的結構示意圖。 第2圖是第1圖之漫射室300於另一實施方式之結 構示意圖。 第3圖是習知之太陽能板的結構示意圖。 第4圖是習知之反射式的太陽能板聚光裝置的結 構示意圖。 第5圖是本揭示内容又一實施方式之反射式的太 陽能板聚光裝置的結構示意圖。 【主要元件符號說明】 100 :太陽能板 101 ： 入射光 200 :拋物面聚光鏡 201 ： 反射光 210 :焦點 300 ： 漫射室 310 :底壁 320 ： 側壁 321 :上段壁 322 ： 下段壁 330 :開口M404956 V. New description: [New type of technology field j This new type is related to a kind of solar panel, and especially related to / solar panel concentrating device. [Prior Art] The purpose of the concentrating solar power generation system is to use the optical module to increase the photoelectric conversion efficiency of the system, thereby reducing the power generation cost. According to the concentrating method, the concentrating solar power generation system can be divided into two types: a transmissive and a reflective concentrating mirror. Among them, transmissive concentrating is the goal of concentrating light by using a Fresnel lens. A number of small prisms are arranged on the lens, and the angle of each of the turns is designed so that all the turns can deflect the parallel incident light toward the common focus behind the mirror, achieving the same effect as the convex lens. However, the Freund's lens collection generates hot spots due to uneven concentrating, which causes the solar cells to be overheated and injured; therefore, the concentrator generally needs to use a homogenizer to solve this problem, and instead increases the cost. On the other hand, 'reflective concentrating mirrors use mirrors to collect sunlight onto solar cells.' At present, systems that use mirrors to collect light have parabolic troughs for spot-focusing and point-focusing parabolic discs. Parabolic dish) or Kaiser Green mirror group and other different forms. The parabolic trough concentrator uses a highly reflective paraboloid 'adjusting the elevation angle of the parabolic reflector' to reflect the sunlight through a parabolic surface to a linear solar panel. The parabolic disc concentrator is controlled by a parabolic reflector. , the light is reflected on the reflective surface and then concentrated on the solar panel; as for the Kay Green mirror group, the incident light is focused onto the focus of the back surface of the hyperbolic mirror by using a parabolic mirror, and then the light is again focused by the hyperbolic mirror. Its positive focus. However, the reflective concentrating device does not need to be provided with a homogenizer as in the case of a transmissive concentrating device, but its photoelectric conversion efficiency is still inconspicuous. [New content] Therefore, one of the technical aspects of the present invention is to provide a solar panel concentrating device which is based on a reflective concentrating mirror and is designed to enhance its photoelectric conversion efficiency. According to an embodiment of the present invention, a solar panel concentrating device is proposed which includes a parabolic concentrating mirror, a diffusing chamber, and a solar panel. The parabolic concentrator defines a focus on the concentrating side that is used to condense the light toward the focus. The diffusing chamber is located between the condensing side and the focal point of the parabolic concentrating mirror. The diffusing chamber has an opening, a bottom wall and a side wall. The opening is for receiving the light reflected by the parabolic concentrating mirror, the bottom wall is located at the opposite position of the opening; the side wall is located between the bottom wall and the opening, and the side wall is used for collecting the light diffused by the parabolic condensing mirror. Finally, the solar panel is mounted on the bottom wall of the diffusing chamber to receive the reflected and diffused light reflected by the parabolic concentrator. According to other embodiments of the present technical aspect, the diffusing chamber may be a dome-shaped diffusing chamber, and in particular, the side portion of the diffusing chamber may have a hexagonal shape, that is, a cosine of an angle of 5 M404956 in the normal direction of the surface. In other words, the ideal diffuse phenomenon obeys Lambert's cosine law: 4 cos 0. Among them, the heart is incident light, and /5 is diffused light. When the light is diffused, each angle diffuses the same amount of diffused light, regardless of the observer's position. As can be seen from the above equation, the radiation rate in a certain direction refers to the unit area projected in this direction, and the projected area is proportional to the angle cosine between the projection direction and the surface normal direction. Therefore, for an ideal diffuser, in the measurement of emissivity, the two cosine factors are locked against each other, so that the measured light rate is independent of the measurement direction. In reality, most of the light sources are very close to the ideal diffuser. Therefore, the light diffused from the diffusing chamber 300 of the present embodiment can be used as an ideal light source for solar power generation. Based on the above, the diffusing chamber 300 of the present embodiment allows the incident light 101 collected by the parabolic concentrating mirror 200 to enter the diffusing chamber 300, and is diffused a plurality of times to efficiently inject light into the solar panel 100. Please refer to Fig. 2, which is a schematic view showing the structure of the diffusing chamber 300 of Fig. 1 in another embodiment. In Fig. 2, the diffuser chamber 300 is designed to have an opening 330, a bottom wall 310 and a side wall 320. The opening 330 is configured to receive the light reflected by the parabolic concentrating mirror 200. The bottom wall 310 is located at a position opposite to the opening 330. The side wall 320 is located between the bottom wall 310 and the opening 330. The side wall 320 is used to collect the diffused surface of the parabolic concentrating mirror 200. Light. It is worth noting that, through computer simulation and implementation verification, the diffuser chamber 300 may have a structure resembling a regular hexagon in a side profile. That is, the angle of each corner in Fig. 2 is 110-120 degrees. 7 M404956 In other words, the side wall 320 can be composed of an upper wall 321 and a lower wall 322. It should be noted that the upper wall 321 and the bottom wall 310 may have an angle of 120 degrees, and the upper wall 321 and the lower wall 322 may have an angle of 110 degrees. In addition, the length of the bottom wall 310 is greater than the overall height of the side wall 320; in other words, the cross-sectional length of the bottom wall 310 for carrying the solar panel 1 (perpendicular to the incident light 101) is greater than the cross-sectional height of the sidewall 320 under the same cross-section. (parallel to the incident light 101); this is because in practical applications, it is usually necessary to integrate the large-area solar panel 100, in which case the volume of the cavity of the diffusing chamber 300 needs to be increased, and the angles are maintained close to 120 degrees, so that the paraboloid is made. The light entering the diffusing chamber 300 of the concentrating mirror 200 can still have a high probability of diffusing. Finally, the present embodiment is an example of a solar panel concentrating device of the present embodiment. The improved photoelectric conversion efficiency is as follows: First, in the experimental parameters, the area of the diffusing chamber 300 is 90 mm in width and 850 mm in length, and the reflecting area of the parabolic concentrating mirror 200 is 380 mm in width and 850 mm in length. The area of the reflection of the parabolic concentrating mirror 200 minus the area of the diffusion chamber 300 is equal to the actual effective reflection area of 246,500 mm 2 °. Next, referring to Fig. 3, Fig. 3 is a schematic view showing the structure of a conventional solar panel. In Fig. 3, incident light 101 is directly incident on solar panel 100, and a photoelectric conversion efficiency of 8.95% is obtained as a reference value of the experiment. Then, referring to Fig. 4, Fig. 4 is a conventional reflective solar 8 M404956 energy board. Schematic diagram of the structure of the concentrating device. In Fig. 4, the solar panel 100 is disposed at a focus position of the parabolic concentrating mirror 200; and, the solar panel 100 is provided with a diffusing chamber 300 so as to be as close as possible to the structure of the embodiment. However, it also achieved only 9.21% of the photoelectric conversion efficiency. Please refer to FIG. 5, which is a schematic structural view of a reflective solar panel concentrating device according to still another embodiment of the present disclosure. In Fig. 5, the solar panel 100 is disposed between the condensing side of the parabolic concentrating mirror 200 and the focus 210 as taught in the present embodiment. Through experiments, the solar panel 100 was placed in the focal length instead of the focus 210, causing the temperature of the focus on the solar panel 100 to drop, thereby achieving a photoelectric conversion efficiency of 19.06%, which is evident in its significant advancement over conventional designs. Finally, the present embodiment conducted an experiment in the structure taught in Figs. 1 and 2, in which not only the solar panel 1 was placed in the focal length, but also a diffusing chamber 300 having a substantially hexagonal cross section. Since the diffusing chamber 300 causes more light in different directions to be incident on the solar panel 100, the diffusion probability is increased, thereby achieving a photoelectric conversion efficiency of up to 22.92%. In other words, its power generation efficiency is 256% higher than that of the general solar panel shown in Figure 3. Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention. Any one skilled in the art can make various changes and retouchings without departing from the spirit and scope of the present invention. The scope is subject to the definition of the scope of the patent application attached. BRIEF DESCRIPTION OF THE DRAWINGS [0009] The above and other objects, features, advantages and embodiments of the present invention will become more apparent and understood. Schematic diagram of the structure of the plate concentrating device. Fig. 2 is a schematic view showing the structure of the diffusing chamber 300 of Fig. 1 in another embodiment. Figure 3 is a schematic view showing the structure of a conventional solar panel. Fig. 4 is a schematic view showing the structure of a conventional reflective solar panel concentrating device. Fig. 5 is a schematic view showing the structure of a reflective solar panel concentrating device according to still another embodiment of the present disclosure. [Main component symbol description] 100: Solar panel 101: Incident light 200: Parabolic concentrator 201: Reflected light 210: Focus 300: Diffuser chamber 310: Bottom wall 320: Side wall 321 : Upper wall 322 : Lower wall 330: Opening