TWI420781B - A portable solar cell device with self-power generation - Google Patents
A portable solar cell device with self-power generation Download PDFInfo
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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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Description
本發明係有關於一種可攜式太陽能充電裝置，更特別係有關於一種聚光型太陽能電池模組所構成之可攜式太陽能充電裝置，使其達到具有長時間即時充電之功效。
The present invention relates to a portable solar charging device, and more particularly to a portable solar charging device comprising a concentrating solar battery module, which achieves the effect of having a long-term instant charging.
目前地球面臨到能源日漸短缺的問題與節約能源的重要性，一般之電器用品因需較高之功率才能使其運作，如需將電器用品用於戶外除了攜帶蓄電池外，並無其他較佳之管道，然而蓄電池之蓄電量有限，於長時間使用下需另外尋找供電場所予以充電。太陽能電池係可為解決此問題其中之一途徑，然而目前市場上的太陽能晶片，其光電轉換效率通常都不高，因此如需使較高之功率電器用品發電，需要極大面積之太陽能電池晶片，故較不具有實用性，所以如何進一步提昇太陽能晶片之光電轉換效率為目前產業者所戮力研究的課題。
如習知的太陽能充電置，其主要包括一承座、一聚光罩、一光電轉換模組以及一電力接頭；該聚光罩係結合於該承座上，並在該承座與該聚光罩之間形成有一容置空間；該光電轉換模組容設於該容置空間內並固定在該承座上，該光電轉換模組包含有複數太陽能晶片以及電連接該太陽能晶片的一蓄電器，該太陽能晶片係為一矽晶片並係對應該聚光罩設置；該電力接頭則連接該承座並電性連接該蓄電器。該太陽能充電裝置在使用前，須先放置在室內或室外光線充足的地方，再以該些太陽能晶片接收外界之光能，並將光能轉換成電能，再將電能儲存至該蓄電器內，以當可攜式電子產品電力不足或沒電時，再以該太陽能充電裝置對可攜式電子產品進行充電。然而，習知的太陽能充電裝置，在實際使用上仍存在有以下的缺失，若使用者未隨身攜帶該太陽能充電裝置或該太陽能充電裝置在使用前並未放置在光線充足的地方時，均無法對可攜式電子產品進行充電與使用。此外，其以矽晶片製成之該太陽能晶片其光電轉換效率通常約在15%左右，故其光電轉換效率甚差。
參照台灣專利第M350822號，其標題為”可攜式太陽能充電裝置”，該專利揭示一種太陽能晶片之設計。其主要係藉由砷化鎵/鍺(GaAs/Ge)單一接面的太陽能晶片或磷化銦鎵/砷化鎵/鍺(InGaP/GaAs/Ge)多重接面的太陽能晶片的設計，以提昇整體之光電轉換效率。然而，其光電轉換效率雖然高(理想可達30％以上)，但其太陽能晶片成本比矽晶片成本高上數十倍，且考量材料環保及昂貴的生產設備等因素，該太陽能晶片並非最佳選擇。
參照台灣專利第M350915號，標題為”可攜式太陽能充電器”，該專利揭示一種太陽能板模組之設計。其主要係藉由殼體上之球狀透鏡作為聚光源以提高太陽能板之輸出功率。然而該專利之太陽能板及其結構設計並無揭示使用低成本之太陽能電池晶片或模組以提供獨立型電器用品所需之功率。
有鑑於此，本發明之創作人乃細心研究，提出一種可攜式太陽能充電裝置，特別係有關於一種聚光型太陽能電池模組所構成之可攜式太陽能充電裝置。藉由具有聚光模組設計之複數個垂直多接面矽基太陽能電池，該可攜式太陽能充電裝置可提高輸出之短路電流，使其可於低元件面積下提供高功率之電源供應，並於戶外使用高功率電氣用品時，具有長時間即時充電之功效。
At present, the earth faces the problem of increasing energy shortage and the importance of energy conservation. Generally, electrical appliances need higher power to operate. If there is a need to use electrical appliances for outdoor use, in addition to carrying batteries, there is no other better pipeline. However, the storage capacity of the battery is limited, and it is necessary to find another power supply place for charging under long-term use. Solar cell systems can be one of the ways to solve this problem. However, the solar photovoltaic chips currently on the market generally have low photoelectric conversion efficiency. Therefore, if a higher power electrical appliance is required to generate electricity, a solar cell wafer of a large area is required. Therefore, it is less practical, so how to further improve the photoelectric conversion efficiency of solar wafers is a subject that the industry is currently studying.
For example, a solar charging device includes a socket, a concentrating mask, a photoelectric conversion module, and a power connector; the concentrating cover is coupled to the socket, and the socket is coupled to the socket An accommodating space is formed between the reticle; the photoelectric conversion module is disposed in the accommodating space and is fixed on the pedestal. The photoelectric conversion module includes a plurality of solar chips and an electric storage device electrically connected to the solar ray The solar chip is a silicon wafer and is disposed corresponding to the concentrating cover; the power connector is connected to the socket and electrically connected to the battery. Before use, the solar charging device must be placed indoors or outdoors with sufficient light, and then receive the external light energy from the solar wafers, convert the light energy into electrical energy, and store the electrical energy into the electrical storage device. When the portable electronic product is insufficient or has no power, the portable electronic product is charged by the solar charging device. However, the conventional solar charging device still has the following drawbacks in practical use. If the user does not carry the solar charging device with him or the solar charging device is not placed in a place with sufficient light before use, Charging and using portable electronic products. Further, the solar wafer made of the tantalum wafer has a photoelectric conversion efficiency of about 15%, which is inferior in photoelectric conversion efficiency.
Reference is made to Taiwan Patent No. M350822, entitled "Portable Solar Charging Device", which discloses a design of a solar wafer. It is mainly designed by solar GaAs/Ge (GaAs/Ge) single junction solar wafer or InGaAs/GaAs/InGaP/GaAs/Ge multi-junction solar wafer design The overall photoelectric conversion efficiency. However, although its photoelectric conversion efficiency is high (ideal to more than 30%), its solar wafer cost is tens of times higher than the cost of silicon wafers. Considering factors such as environmentally friendly materials and expensive production equipment, the solar wafer is not optimal. select.
Referring to Taiwan Patent No. M350915, entitled "Portable Solar Charger", the patent discloses a design of a solar panel module. The main purpose is to increase the output power of the solar panel by using a spherical lens on the casing as a light source. However, the patented solar panel and its structural design do not disclose the power required to use a low cost solar cell wafer or module to provide a stand-alone electrical appliance.
In view of this, the creator of the present invention has carefully studied and proposed a portable solar charging device, and particularly relates to a portable solar charging device comprising a concentrating solar battery module. The portable solar charging device can increase the short-circuit current of the output by providing a plurality of vertical multi-junction 矽-based solar cells with a concentrating module design, so as to provide a high-power power supply under a low component area, and When using high-power electrical appliances outdoors, it has the effect of long-term instant charging.
本發明之主要目的在提供一種可攜式太陽能充電裝置，藉由具有聚光模組設計之複數個垂直多接面矽基太陽能電池，提高太陽能電池之短路電流，使其可於小面積下提供高功率之電源供應，並於戶外使用高功率電氣用品時，具有即時充電之功效。
為達上述目的，本發明提出一種可攜式太陽能充電裝置，其包含：一機箱；一聚光型太陽能電池模組；一電源輸出單元；一電源輸入單元；一儲能裝置以及一控制模組。該機箱設置一可掀合活動之機蓋連接於該機箱；該聚光型太陽能電池模組設置於該機蓋頂面；該電源輸出單元設置於該機箱之其中一側邊；該電源輸入單元設置於該機箱之另一側邊；該儲能裝置設置於該機箱之內部；以及該控制模組設於該機箱內部，並與該聚光型太陽能電池模組、該儲能裝置、該電源輸出單元以及該電源輸入單元電性連接。其中，該聚光型太陽能電池模組係由一複數個垂直多接面矽基太陽能電池及一聚光模組所組成，用以將光源利用該聚光模組使光源收集於該複數個垂直多接面矽基太陽能電池之表面。
本發明之可攜式太陽能充電裝置將具有以下之功效：
1.提供高功率之太陽能電池：
藉由聚光模組之設計，可提高該矽基垂直多接面太陽能電池之短路電流，藉此得到高功率之太陽能電池。
2.極低串連電阻值：
藉由該矽基垂直多接面太陽能電池之設計，提供高電壓，低電流操作的可能性，且具有於最大功率負載過程及高容許範圍於電力系統內之極低串聯電阻值。
3.高抗反轉電壓擊穿能力：
該矽基垂直多接面太陽能電池具有非常高的抗反轉電壓擊穿能力，從而降低額外加入旁通二極體保護之需求。
4.小面積高功率特性：
本發明相較於傳統單一接面之矽基太陽能電池，該矽基垂直多接面太陽能電池之設計，於N倍聚光下產生相同之功率時，其約可節省N倍之面積。
5.低製作成本：
本發明相較於III-V族電池之昂貴的真空生產設備，該矽基垂直多接面太陽能電池製程不需昂貴的真空設備，其製程可藉由較低成本之非真空設備達成，因此可降低生產成本。
6.長時間即時充電特性：
藉由本發明之聚光型太陽能電池模組，可將光電轉換之電能儲存於可攜式裝置上，藉此如欲於戶外使用高功率之電器用品將可長時間具有即時充電之特性。
為讓本發明之上述和其他目的、特徵、和優點能更明顯易懂，下文特舉數個較佳實施例，並配合所附圖式，作詳細說明如下。
The main object of the present invention is to provide a portable solar charging device, which can improve the short-circuit current of a solar cell by using a plurality of vertical multi-junction 矽-based solar cells with a concentrating module design, so that it can be provided in a small area. High-power power supply and instant charging when using high-power electrical appliances outdoors.
To achieve the above objective, the present invention provides a portable solar charging device comprising: a chassis; a concentrating solar cell module; a power output unit; a power input unit; an energy storage device and a control module . The chassis is provided with a movable cover connected to the chassis; the concentrating solar battery module is disposed on the top surface of the cover; the power output unit is disposed on one side of the chassis; the power input unit And being disposed on the other side of the chassis; the energy storage device is disposed inside the chassis; and the control module is disposed inside the chassis, and the concentrating solar battery module, the energy storage device, and the power supply The output unit and the power input unit are electrically connected. The concentrating solar cell module is composed of a plurality of vertical multi-junction 矽-based solar cells and a concentrating module, and the light source is used to collect the light source in the plurality of verticals by using the concentrating module. The surface of the multi-junction 矽-based solar cell.
The portable solar charging device of the present invention will have the following effects:
1. Provide high power solar cells:
By designing the concentrating module, the short-circuit current of the 矽-based vertical multi-junction solar cell can be improved, thereby obtaining a high-power solar cell.
2. Very low series resistance:
The design of the 矽-based vertical multi-junction solar cell provides the possibility of high voltage, low current operation, and has a very high series load resistance in the power system and a high allowable range in the power system.
3. High anti-reverse voltage breakdown capability:
The bismuth-based vertical multi-junction solar cell has a very high anti-reverse voltage breakdown capability, thereby reducing the need for additional bypass diode protection.
4. Small area high power characteristics:
Compared with the conventional single-junction 矽-based solar cell, the 矽-based vertical multi-junction solar cell design can save about N times of area when the same power is generated under N times of concentrating light.
5. Low production cost:
Compared with the expensive vacuum production equipment of the III-V battery, the ruthenium-based vertical multi-junction solar cell process does not require expensive vacuum equipment, and the process can be achieved by a lower cost non-vacuum device. reduce manufacturing cost.
6. Long-term instant charging characteristics:
With the concentrating solar cell module of the present invention, the photoelectrically converted electrical energy can be stored on the portable device, whereby the use of high-power electrical appliances for outdoor use can have the characteristics of instant charging for a long time.
The above and other objects, features, and advantages of the present invention will become more apparent and understood.
雖然本發明可表現為不同形式之實施例，但附圖所示者及於下文中說明者係為本發明可之較佳實施例，並請了解本文所揭示者係考量為本發明之一範例，且並非意圖用以將本發明限制於圖示及/或所描述之特定實施例中。
現請參考第1圖(a)、(b)，分別顯示為本發明之一種可攜式太陽能充電裝置100之示意圖。其包含：一機箱200；一聚光型太陽能電池模組400；一電源輸出單元500；一電源輸入單元600；一儲能裝置700；以及一控制模組800。
該機箱200，設置一可掀合活動之機蓋300連接於該機箱200，並設置該聚光型太陽能電池模組400於該機蓋300頂面；該電源輸出單元500，設置於該機箱200之其中一側邊，並包含一開關510、複數的電源輸出插座、以及複數的電壓顯示器520，該電源輸出插座可區分直流電源輸出插座及交流電源輸出插座。
該電源輸入單元600，設置於該機箱200之另一側邊，並包含包括複數個電源輸入插座，該電源輸入插座可與市電、外部電池、擴充太陽能模組、或風力發電裝置連接。
該機箱200與該機蓋300可以一可調角度之支架310連接，從而調整該機蓋300的開啟角度，以利該聚光型太陽能電池模組400以適當的角度朝向太陽光源。
該儲能裝置700及該控制模組800，設置於該機箱200之內部，該控制模組800與上述之該聚光型太陽能電池模組400、儲能裝置700、電源輸出單元500以及電源輸入單元600電性連接，該控制模組800可做電流轉換(直流轉交流，交流轉直流)及電壓轉變，將該太陽能模組及電源輸入單元600所輸入的電源蓄存於該儲能裝置700，亦可將該儲能裝置700之電源由該電源輸出單元500輸出，其中該儲能裝置700係可選自鋰電池、高分子鋰電池、鋰離子電池、鎳氫電池及鎳鎘電池之一。
上述之該機箱200及該機蓋300設有使其便於被提取攜移的結構，該結構可為一設在該機箱200外壁的提把210或者是支托該機箱200且附有滾輪的拖行架，以發展成一種可攜帶式獨立電源，充電及發電位置不再只限定於一個固定地點，而是可以機動性的移動。
該控制模組800及該電源輸入單元600，除了利用其所屬之該聚光型太陽能電池模組400進行充電之外，亦可與市電、車用電連接、或戶外發電裝置連接而進行充電。與市電連接者，係利用室內的一般電源進行充電。與車用電連接者，係於車輛行進時利用車輛之發電機進行充電。與戶外發電裝置連接者，係指與設置在戶外利用自然力量的發電裝置(例如風力發電裝置)連接而進行充電。據上所述，本案可進行多種方式充電，且特別適用於野外之充電及供電。該控制模組800及該電源輸出單元500可將該儲能裝置700之電源調整成預定電壓，且可供使用者選擇以直流電輸出或交流電輸出，而可供電於不同領域。
現請參考第2圖，其顯示為本發明之該聚光型太陽能電池模組400之立體分解圖。為了使該可攜式太陽能充電裝置100可於最小面積下產生最大之功率，其係以一聚光模組420設置於該複數個垂直多接面之矽基太陽能電池410上方，而該複數個垂直多接面之矽基太陽能電池410係設置有一散熱模組430上。該儲能裝置700係電性連接於該複數個垂直多接面之矽基太陽能電池410，以便將電能儲存於其內。該散熱模組430，係用於承載該複數個垂直多接面之矽基太陽能電池410，當太陽光能所產生之額外熱能可透過複數個該散熱模組430散逸；其中，該散熱模組430之材料係可選自陶瓷、金屬、金屬合金、不銹鋼、石墨及高分子化合物之一。需注意，第2圖顯示之立體分解圖於實際應用時，該聚光模組420係組合於該複數個垂直多接面之矽基太陽能電池410之上方。該聚光型太陽能電池晶片模組400更可包含一追日裝置 (未顯示於圖中)，其係可為手動之雙軸追日裝置，用以調整該聚光型太陽能電池晶片模組400至一接收太陽光能之最佳角度。
該聚光模組420，其需配置與該複數個垂直多接面之矽基太陽能電池410同側，用以集中太陽光能至該複數個垂直多接面矽基太陽能電池410之表面。其中該聚光模組420，可選自穿透式模組，亦即太陽光能直接經由複數個該聚光模組420聚焦於該複數個垂直多接面矽基太陽能電池410之表面上。常見之穿透式聚光模組420多為菲涅爾透鏡(Fresnel Lenes)，其製作材料可為玻璃或穿透率90%以上之高分子材料所製成。此外，該聚光模420組亦可選自反射式模組，亦即太陽光能直接經由複數個聚光模組反射聚焦於該複數個垂直多接面矽基太陽能電池410之表面上，其中常見之反射式聚光模組420多為碟形反射鏡，其製作材料多為背面具有金屬薄膜之玻璃。
現請參考第3圖，其顯示為該複數個垂直多接面矽基太陽能電池410示意圖。其特點在於該複數個垂直多接面矽基太陽能電池410係由多層矽基材p-n接面，以垂直串聯而成。其中，該複數個垂直多接面矽基太陽能電池410之接面數係介於30層至50層之間，其厚度係介於0.01公分至1公分之間、長與寬係介於0.5公分至2公分之間及平均輸出功率密度係介於5 W/cm2
至50 W/cm2
之間；此外，該聚光模組之聚光倍率係介於50倍至500倍之間時，且體積為67公分×56公分× 0.05公分時可使該聚光型太陽能電池模組之輸出功率為50W至1000W之間。
該複數個垂直多接面矽基太陽能電池410其製程步驟包含：首先，將一厚度為200um至400um之n型矽晶片經由擴散製程形成p+
-n-n+
晶片，再將複數片該p+
-n-n+
晶片堆疊和焊接在一起，形成垂直串聯之多層堆疊。接著，適當切割該堆疊之矽晶片並塗佈抗反射塗層以鈍化照光面。最後，將引線連接附加於接觸末端形成電極。需注意，該複數個垂直多接面矽基太陽能電池410之各接面電流係為穿遂導通，因此可產生20V至50V之高電壓值。
為了不使該聚光型太陽能電池模組400於長時間陽光照射下，使該複數個垂直多接面矽基太陽能電池410產生過熱影響其發電效率，該聚光型太陽能電池模組400亦可包含一散熱模組，其係用於承載該複數個垂直多接面矽基太陽能電池410，當太陽光能所產生之額外熱能可透過複數個該散熱模組散逸；其中，該散熱模組其材料係可選自陶瓷、金屬、金屬合金、不銹鋼、石墨及高分子化合物之一。需注意，該聚光型太陽能電池模組400更可包含一追日裝置，其係可為為雙軸追日裝置，用以調整該聚光型太陽能電池模組400至一接收太陽光能之最佳角度。
<實施例1>
首先，將一厚度為250um之n型矽晶片經由擴散製程形成p+
晶片-n晶片-n+
晶片，再將40片該p+
晶片-n晶片-n+
晶片堆疊和焊接在一起，形成垂直串聯之多層堆疊。接著，適當切割該堆疊之矽晶片使其形成尺寸為：厚度0.05cm，長寬各1cm，並塗佈抗反射塗層以鈍化照光面。最後，將引線連接附加於接觸末端形成上電極及下電極即為本發明之矽基垂直多接面太陽能電池。其中，該矽基垂直多接面太陽能電池能在此厚度與面積內提供32V之電壓。因此，可攜式太陽能充電裝置非常有利於獨立型電氣用品之快速充放電。
<實施例2>
該矽基垂直多接面太陽能電池模組如以56個單位矽基垂直多接面太陽能電池組成，其尺寸為67cm×56cm × 0.05cm，且於1000倍之太陽光照射下，該可攜式太陽能充電裝置會產生約1000W之輸出功率，因此非常有利高功率之獨立型電氣用品之供電使用。
上述實施例僅係為了方便說明舉例而已，本發明所主張之權力範圍自應已申請專利範圍所述為準，而非僅限於上述實施例。
綜上所述，本發明之可攜式太陽能充電裝置具有以下功效：
1.小面積高功率特性：
本發明相較於傳統單一接面之矽基太陽能電池，該矽基垂直多接面太陽能電池之設計，於N倍聚光下產生相同之功率時，其約可節省N倍之面積。
2.低製作成本：
本發明相較於III-V族電池之昂貴的真空生產設備，該矽基垂直多接面太陽能電池製程不需昂貴的真空設備，其製程可藉由較低成本之非真空設備達成，因此可降低生產成本。
3.長時間即時充電特性：
藉由機箱上之機蓋裝設聚光型太陽能電池模組，並於機箱外側設置電源輸出單元及電源輸入單元使其將電能儲存於儲能裝置，使電性連接之控制模組將電源輸出或輸入，藉此如欲於戶外使用高功率之電器用品將可長時間具有即時充電之特性。
雖然本發明已以前述較佳實施例揭示，然其並非用以限定本發明，任何熟習此技藝者，在不脫離本發明之精神和範圍內，當可作各種之更動與修改。如上述的解釋，都可以作各型式的修正與變化，而不會破壞此創作的精神。因此本發明之保護範圍當視後附之申請專利範圍所界定者為準。
While the invention may be embodied in various forms, the embodiments illustrated in the drawings It is not intended to limit the invention to the particular embodiments illustrated and/or described.
Referring now to Figures 1(a) and (b), a schematic diagram of a portable solar charging device 100 of the present invention is shown. It comprises: a chassis 200; a concentrating solar cell module 400; a power output unit 500; a power input unit 600; an energy storage device 700; and a control module 800.
The chassis 200 is provided with a movable cover 300 connected to the chassis 200, and the concentrating solar battery module 400 is disposed on the top surface of the cover 300. The power output unit 500 is disposed in the chassis 200. One of the sides, and includes a switch 510, a plurality of power output sockets, and a plurality of voltage displays 520, the power output sockets can distinguish between a DC power output socket and an AC power output socket.
The power input unit 600 is disposed on the other side of the chassis 200 and includes a plurality of power input sockets that can be connected to a commercial power source, an external battery, an expansion solar module, or a wind power generation device.
The chassis 200 and the cover 300 can be connected to an adjustable angle bracket 310 to adjust the opening angle of the cover 300 so that the concentrating solar battery module 400 faces the solar light source at an appropriate angle.
The energy storage device 700 and the control module 800 are disposed inside the chassis 200, the control module 800 and the concentrating solar battery module 400, the energy storage device 700, the power output unit 500, and the power input. The unit 600 is electrically connected, and the control module 800 can perform current conversion (DC to AC, AC to DC) and voltage conversion, and the power input by the solar module and the power input unit 600 is stored in the energy storage device 700. The power supply device 700 can also be powered by the power output unit 500, wherein the energy storage device 700 can be selected from one of a lithium battery, a polymer lithium battery, a lithium ion battery, a nickel hydrogen battery, and a nickel cadmium battery. .
The chassis 200 and the cover 300 are provided with a structure for facilitating extraction and carrying. The structure may be a handle 210 disposed on the outer wall of the chassis 200 or a trailer supporting the chassis 200 and attached with a roller. The rack is developed to be a portable independent power source. The charging and power generation locations are no longer limited to only one fixed location, but can be moved by mobility.
The control module 800 and the power input unit 600 can be charged by using the concentrating solar battery module 400 to which they belong, or by connecting to a commercial power supply, a vehicle electrical connection, or an outdoor power generation device. The connection with the mains is charged by the general power supply in the room. The vehicle is connected to the vehicle and is charged by the generator of the vehicle while the vehicle is traveling. The connection with the outdoor power generation device means that it is connected to a power generation device (for example, a wind power generation device) that is installed outdoors by using natural power to perform charging. According to the above, the case can be charged in a variety of ways, and is particularly suitable for charging and powering in the field. The control module 800 and the power output unit 500 can adjust the power of the energy storage device 700 to a predetermined voltage, and can be selected by the user to output a direct current or an alternating current, and can be powered in different fields.
Referring now to FIG. 2, an exploded perspective view of the concentrating solar cell module 400 of the present invention is shown. In order to enable the portable solar charging device 100 to generate the maximum power in a minimum area, the concentrating module 420 is disposed above the plurality of vertical multi-junction 矽-based solar cells 410, and the plurality of The vertical multi-junction 矽-based solar cell 410 is disposed on a heat dissipation module 430. The energy storage device 700 is electrically connected to the plurality of vertical multi-junction silicon-based solar cells 410 to store electrical energy therein. The heat dissipation module 430 is configured to carry the plurality of vertical multi-junction 矽-based solar cells 410, and the additional thermal energy generated by the solar energy can be dissipated through the plurality of heat dissipation modules 430; wherein the heat dissipation module The material of 430 may be selected from one of ceramics, metals, metal alloys, stainless steel, graphite, and high molecular compounds. It should be noted that, in the actual application, the concentrating module 420 is combined with the plurality of vertical multi-junction 矽-based solar cells 410. The concentrating solar cell chip module 400 may further include a solar tracking device (not shown), which may be a manual biaxial tracking device for adjusting the concentrating solar cell chip module 400. The best angle to receive solar energy.
The concentrating module 420 is disposed on the same side of the plurality of vertical multi-junction 矽-based solar cells 410 for concentrating solar energy to the surface of the plurality of vertical multi-junction 矽-based solar cells 410. The concentrating module 420 can be selected from a transmissive module, that is, the solar energy can be directly focused on the surface of the plurality of vertical multi-junction 矽-based solar cells 410 via a plurality of the concentrating modules 420. The common transmissive concentrating module 420 is mostly Fresnel lens (Fresnel Lenes), and the material can be made of glass or a polymer material with a transmittance of 90% or more. In addition, the group of the concentrating modes 420 may also be selected from a reflective module, that is, the sunlight can be directly reflected on the surface of the plurality of vertical multi-junction 矽-based solar cells 410 via a plurality of concentrating modules, wherein The common reflective concentrating module 420 is mostly a dish mirror, and the material of the 420 is mostly a glass with a metal film on the back.
Referring now to FIG. 3, it is shown as a schematic diagram of the plurality of vertical multi-junction germanium-based solar cells 410. The utility model is characterized in that the plurality of vertical multi-junction 矽-based solar cells 410 are formed by vertically connecting a plurality of 矽-substrate pn junctions. Wherein, the number of junctions of the plurality of vertical multi-junction 矽-based solar cells 410 is between 30 and 50 layers, and the thickness thereof is between 0.01 cm and 1 cm, and the length and width are between 0.5 cm. Between 2 cm and an average output power density of between 5 W/cm 2 and 50 W/cm 2 ; in addition, when the concentrating ratio of the concentrating module is between 50 and 500 times, When the volume is 67 cm × 56 cm × 0.05 cm, the output power of the concentrating solar cell module can be between 50 W and 1000 W.
The plurality of silicon-based vertical multi-junction solar cell 410 which comprises the process steps: first, to a thickness of 200um 400um is formed of n-type silicon chips via the p + -nn + diffusion process wafer, and then the plurality of sheet p + - Nn + wafers are stacked and soldered together to form a multi-layer stack in vertical series. Next, the stacked tantalum wafer is appropriately cut and an anti-reflective coating is applied to passivate the illuminated surface. Finally, a lead connection is attached to the contact tip to form an electrode. It should be noted that the currents of the junctions of the plurality of vertical multi-junction germanium-based solar cells 410 are conducted through and through, so that a high voltage value of 20V to 50V can be generated.
In order to prevent the heat dissipation of the plurality of vertical multi-junction-based solar cells 410 from affecting the power generation efficiency of the concentrating solar cell module 400 under long-term sunlight, the concentrating solar cell module 400 may also be used. The heat dissipation module is configured to carry the plurality of vertical multi-junction 矽-based solar cells 410, and the additional thermal energy generated by the solar energy can be dissipated through the plurality of heat dissipation modules; wherein the heat dissipation module The material may be selected from one of ceramics, metals, metal alloys, stainless steel, graphite, and high molecular compounds. It should be noted that the concentrating solar cell module 400 may further include a sun-tracking device, which may be a dual-axis sun-tracking device for adjusting the concentrating solar cell module 400 to receive solar energy. The best angle.
<Example 1>
First, a n-type germanium wafer having a thickness of 250 μm is formed into a p + wafer-n wafer-n + wafer via a diffusion process, and 40 pieces of the p + wafer-n wafer-n + wafer are stacked and soldered together to form a vertical Multi-layer stacking in series. Next, the stacked tantalum wafers were appropriately cut to have a size of 0.05 cm in thickness, 1 cm in length and width, and coated with an anti-reflective coating to passivate the illuminated surface. Finally, the lead connection is attached to the contact end to form the upper electrode and the lower electrode, which is the bismuth-based vertical multi-junction solar cell of the present invention. Wherein, the ruthenium-based vertical multi-junction solar cell can provide a voltage of 32V in this thickness and area. Therefore, the portable solar charging device is very advantageous for rapid charging and discharging of the independent electrical appliance.
<Example 2>
The 矽-based vertical multi-junction solar cell module is composed of 56 units of 矽-based vertical multi-junction solar cells, and has a size of 67 cm×56 cm×0.05 cm, and is portable under 1000 times of sunlight. The solar charging device generates an output power of about 1000 W, which is very advantageous for the power supply of high-power independent electrical appliances.
The above-mentioned embodiments are only for the convenience of the description, and the scope of the claims is based on the scope of the patent application, and is not limited to the above embodiments.
In summary, the portable solar charging device of the present invention has the following effects:
1. Small area high power characteristics:
Compared with the conventional single-junction 矽-based solar cell, the 矽-based vertical multi-junction solar cell design can save about N times of area when the same power is generated under N times of concentrating light.
2. Low production cost:
Compared with the expensive vacuum production equipment of the III-V battery, the ruthenium-based vertical multi-junction solar cell process does not require expensive vacuum equipment, and the process can be achieved by a lower cost non-vacuum device. reduce manufacturing cost.
3. Long-term instant charging characteristics:
A concentrating solar cell module is installed on the cover of the chassis, and a power output unit and a power input unit are disposed outside the chassis to store electric energy in the energy storage device, so that the electrically connected control module outputs the power supply. Or input, so that if you want to use high-power electrical appliances outdoors, you will have the characteristics of instant charging for a long time.
While the present invention has been described in its preferred embodiments, it is not intended to limit the scope of the invention, and various modifications and changes can be made without departing from the spirit and scope of the invention. As explained above, all types of corrections and changes can be made without destroying the spirit of this creation. Therefore, the scope of the invention is defined by the scope of the appended claims.
100‧‧‧一種可攜式太陽能充電裝置100‧‧‧A portable solar charging device
200‧‧‧機箱200‧‧‧Chassis
210‧‧‧提把210‧‧‧提提
300‧‧‧機蓋300‧‧‧ canopy
310‧‧‧支架310‧‧‧ bracket
400‧‧‧聚光型太陽能電池模組400‧‧‧Concentrating solar cell module
410‧‧‧垂直多接面矽基太陽能電池410‧‧‧Vertical multi-junction 矽-based solar cells
420‧‧‧聚光模組420‧‧‧ Concentrating module
430‧‧‧散熱模組430‧‧‧ Thermal Module
500‧‧‧電源輸出單元500‧‧‧Power output unit
510‧‧‧開關510‧‧‧ switch
520‧‧‧電壓顯示器520‧‧‧Voltage display
600‧‧‧電源輸入單元600‧‧‧Power input unit
700‧‧‧儲能裝置700‧‧‧ energy storage device
800‧‧‧控制模組800‧‧‧Control Module
第1圖(a)(b)顯示為本發明之一種可攜式太陽能充電裝置之示意圖；第2圖顯示為本發明之複數個垂直多接面之矽基太陽能電池示意圖；以及第3圖顯示為本發明之複數個垂直多接面矽基太陽能電池示意圖。1(a)(b) is a schematic view showing a portable solar charging device of the present invention; and FIG. 2 is a schematic view showing a plurality of vertical multi-junction germanium-based solar cells of the present invention; and FIG. 3 is a view It is a schematic diagram of a plurality of vertical multi-junction germanium-based solar cells of the present invention.
100‧‧‧一種可攜式太陽能充電裝置100‧‧‧A portable solar charging device
200‧‧‧機箱200‧‧‧Chassis
210‧‧‧提把210‧‧‧提提
300‧‧‧機蓋300‧‧‧ canopy
310‧‧‧支架310‧‧‧ bracket
400‧‧‧聚光型太陽能電池模組400‧‧‧Concentrating solar cell module
500‧‧‧源輸出單元500‧‧‧Source output unit
510‧‧‧開關510‧‧‧ switch
520‧‧‧電壓顯示器520‧‧‧Voltage display
600‧‧‧電源輸入單元600‧‧‧Power input unit
700‧‧‧儲能裝置700‧‧‧ energy storage device
800‧‧‧控制模組800‧‧‧Control Module
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW099142256A TWI420781B (en) | 2010-12-06 | 2010-12-06 | A portable solar cell device with self-power generation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW099142256A TWI420781B (en) | 2010-12-06 | 2010-12-06 | A portable solar cell device with self-power generation |
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| Publication Number | Publication Date |
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| TW201225477A TW201225477A (en) | 2012-06-16 |
| TWI420781B true TWI420781B (en) | 2013-12-21 |
Family
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI513176B (en) * | 2014-08-22 | 2015-12-11 | Au Optronics Corp | Holder for photovolataic conversion module |
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| TWI668940B (en) * | 2018-05-24 | 2019-08-11 | 國立彰化師範大學 | Mobile solar energy storage device |
Citations (3)
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|---|---|---|---|---|
| TW200735390A (en) * | 2005-06-03 | 2007-09-16 | Solartec Ag | Concentrator-photovoltaic-unit, from it formed photovoltaic-concentrator module and manufacturing method for this |
| TWM360509U (en) * | 2008-12-25 | 2009-07-01 | yang-liu Jian | Portable solar power charger |
| TW201013951A (en) * | 2008-08-14 | 2010-04-01 | Bernard L Sater | Photovoltaic cells with processed surfaces and related applications |
-
2010
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200735390A (en) * | 2005-06-03 | 2007-09-16 | Solartec Ag | Concentrator-photovoltaic-unit, from it formed photovoltaic-concentrator module and manufacturing method for this |
| TW201013951A (en) * | 2008-08-14 | 2010-04-01 | Bernard L Sater | Photovoltaic cells with processed surfaces and related applications |
| TWM360509U (en) * | 2008-12-25 | 2009-07-01 | yang-liu Jian | Portable solar power charger |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI513176B (en) * | 2014-08-22 | 2015-12-11 | Au Optronics Corp | Holder for photovolataic conversion module |
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