TW201444103A - Photovoltaic cell element having a specific electrode configuration - Google Patents
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- TW201444103A TW201444103A TW102146671A TW102146671A TW201444103A TW 201444103 A TW201444103 A TW 201444103A TW 102146671 A TW102146671 A TW 102146671A TW 102146671 A TW102146671 A TW 102146671A TW 201444103 A TW201444103 A TW 201444103A
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- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
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- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/0224—Electrodes
- H01L31/022408—Electrodes for devices characterised by at least one potential jump barrier or surface barrier
- H01L31/022425—Electrodes for devices characterised by at least one potential jump barrier or surface barrier for solar cells
- H01L31/022433—Particular geometry of the grid contacts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/02002—Arrangements for conducting electric current to or from the device in operations
- H01L31/02005—Arrangements for conducting electric current to or from the device in operations for device characterised by at least one potential jump barrier or surface barrier
- H01L31/02008—Arrangements for conducting electric current to or from the device in operations for device characterised by at least one potential jump barrier or surface barrier for solar cells or solar cell modules
- H01L31/0201—Arrangements for conducting electric current to or from the device in operations for device characterised by at least one potential jump barrier or surface barrier for solar cells or solar cell modules comprising specially adapted module bus-bar structures
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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
Abstract
Description
本發明關於一種具有特定電極架構之光伏電池元件及關於一種包含此光伏電池元件之光伏模組。 The invention relates to a photovoltaic cell component having a specific electrode structure and to a photovoltaic module comprising the photovoltaic cell component.
光伏電池(有時候稱為太陽電池)係藉由光伏效應將光能轉換成電能之電氣裝置。為了將一光伏電池所產生之電能輸送到外部電動組件，必須提供電氣接頭至光伏電池。在一光伏電池之光接收側上，一般實務上是使用一金屬柵網將一光接收區最佳化，同時確定有令人滿意的串聯電阻，金屬柵網具有許多薄且平行之指狀電極，用於集收二、三或四條延伸垂直於指狀電極之較寬匯流排條電極，及用於從指狀電極集收電流。在模組組裝時，導電之金屬帶可焊接至匯流排條電極，以利將光伏電池連接於外部模組接頭或互連於相鄰之光伏電池。 Photovoltaic cells (sometimes referred to as solar cells) are electrical devices that convert light energy into electrical energy by the photovoltaic effect. In order to deliver the electrical energy generated by a photovoltaic cell to an external electrical component, an electrical connector must be provided to the photovoltaic cell. On the light receiving side of a photovoltaic cell, it is generally practiced to optimize a light receiving region using a metal grid while determining a satisfactory series resistance. The metal grid has a plurality of thin and parallel finger electrodes. For collecting two, three or four wide bus bar electrodes extending perpendicular to the finger electrodes, and for collecting current from the finger electrodes. When the module is assembled, the conductive metal strip can be soldered to the bus bar electrode to connect the photovoltaic cell to the external module connector or to the adjacent photovoltaic cell.
使用已知接頭電阻、金屬電阻等數值、及可行之設計 與製程範圍於指狀及匯流排條電極規格，可以用數學方式模型化指狀及匯流排條電極之一最佳布局。惟，在此模型中，通常假設並無生產瑕疵或在光伏模組操作期間並無生產瑕疵出現。 Use known joint resistance, metal resistance and other values, and feasible design And the process range is in the finger and bus bar electrode specifications, mathematical mode can be used to model the best layout of one of the finger and bus bar electrodes. However, in this model, it is generally assumed that there is no production defect or no production defects occur during the operation of the PV module.
因此，吾人想要的是具有一相關於電能產生之電極模型設計，其可強力減低瑕疵之衝擊，同時維持一幾近最佳之電極設計。 Therefore, what we want is to have an electrode model design related to electrical energy generation, which can strongly reduce the impact of enthalpy while maintaining a nearly optimal electrode design.
此一欲求可由獨立請求項之附屬項達成。優越性實施例係界定於文後之申請專利範圍中。 This request can be achieved by an affiliate of an independent claim. Advantageous embodiments are defined in the scope of the patent application.
在一實施例中，本發明提供一種光伏電池元件。光伏電池元件包括包含有一前表面、一後表面及設於前表面上之前表面電極的一基板。前表面電極包括複數個前表面匯流排條電極，其耦合於複數個前表面指狀電極。前表面匯流排條電極之寬度在大約0.5mm與大約2.5mm之間。複數個前表面匯流排條電極係大致平行於彼此及大致垂直於前表面指狀電極。前表面指狀電極之寬度在大約30μm與大約100μm之間。前表面電極亦包括第一前表面冗餘線電極，其設於各兩相鄰之前表面匯流排條電極之間。第一前表面冗餘線電極大致平行於匯流排條電極及大致垂直於前表面指狀電極，以耦合前表面指狀電極。第一前表面冗餘線電極之寬度在大約30μm與大約500μm之間。 In one embodiment, the present invention provides a photovoltaic cell component. The photovoltaic cell component includes a substrate including a front surface, a back surface, and a front surface electrode disposed on the front surface. The front surface electrode includes a plurality of front surface bus bar electrodes coupled to the plurality of front surface finger electrodes. The width of the front surface bus bar electrode is between about 0.5 mm and about 2.5 mm. The plurality of front surface bus bar electrodes are substantially parallel to each other and substantially perpendicular to the front surface finger electrodes. The width of the front surface finger electrodes is between about 30 [mu]m and about 100 [mu]m. The front surface electrode also includes a first front surface redundant line electrode disposed between each of the two adjacent front surface bus bar electrodes. The first front surface redundant line electrode is substantially parallel to the bus bar electrode and substantially perpendicular to the front surface finger electrode to couple the front surface finger electrode. The width of the first front surface redundant line electrode is between about 30 [mu]m and about 500 [mu]m.
在另一實施例中，本發明提供一種光伏模組。光伏模組包括藉由連接構件電氣性互連之複數個光伏電池。各光伏電池包括包含有一前表面、一後表面及設於前表面上之 前表面電極的一基板。前表面電極包括複數個前表面匯流排條電極，其耦合於複數個前表面指狀電極並耦合於該連接構件。前表面匯流排條電極之寬度在大約0.5mm與大約2.5mm之間。複數個前表面匯流排條電極係大致平行於彼此及大致垂直於前表面指狀電極。前表面指狀電極之寬度在大約30μm與大約100μm之間。前表面電極亦包括第一前表面冗餘線電極，其設於各兩相鄰之前表面匯流排條電極之間。第一前表面冗餘線電極大致平行於匯流排條電極及大致垂直於前表面指狀電極，以耦合於前表面指狀電極。第一前表面冗餘線電極之寬度在大約30μm與大約500μm之間。 In another embodiment, the present invention provides a photovoltaic module. The photovoltaic module includes a plurality of photovoltaic cells electrically interconnected by a connecting member. Each photovoltaic cell includes a front surface, a rear surface, and a front surface A substrate of the front surface electrode. The front surface electrode includes a plurality of front surface bus bar electrodes coupled to the plurality of front surface finger electrodes and coupled to the connecting member. The width of the front surface bus bar electrode is between about 0.5 mm and about 2.5 mm. The plurality of front surface bus bar electrodes are substantially parallel to each other and substantially perpendicular to the front surface finger electrodes. The width of the front surface finger electrodes is between about 30 [mu]m and about 100 [mu]m. The front surface electrode also includes a first front surface redundant line electrode disposed between each of the two adjacent front surface bus bar electrodes. The first front surface redundant line electrode is substantially parallel to the bus bar electrode and substantially perpendicular to the front surface finger electrode for coupling to the front surface finger electrode. The width of the first front surface redundant line electrode is between about 30 [mu]m and about 500 [mu]m.
上述及其他目的隨著本發明實施例之可能優點及特性可以透過參考文後說明及附圖獲得瞭解。應該瞭解的是本文內所述之許多實施例之特性並非相互排斥，及其可存在於許多排列組合中。 The above and other objects, along with the advantages and features of the embodiments of the present invention, can be understood by reference to the following description and drawings. It will be appreciated that the features of many of the embodiments described herein are not mutually exclusive and may be present in many permutations.
100‧‧‧光伏電池元件 100‧‧‧Photovoltaic cell components
101‧‧‧基板 101‧‧‧Substrate
102‧‧‧前表面匯流排條電極 102‧‧‧ front surface bus bar electrode
103‧‧‧前表面指狀電極 103‧‧‧ front surface finger electrode
104、105‧‧‧冗餘線電極 104, 105‧‧‧Redundant wire electrode
106‧‧‧前表面 106‧‧‧ front surface
107‧‧‧後表面 107‧‧‧Back surface
108‧‧‧後表面接頭 108‧‧‧Back surface joint
109‧‧‧前表面層 109‧‧‧ front surface layer
110‧‧‧抗反射層 110‧‧‧Anti-reflective layer
200‧‧‧光伏電池元件 200‧‧‧Photovoltaic cell components
300‧‧‧光伏電池元件 300‧‧‧Photovoltaic cell components
D‧‧‧間斷處 D‧‧‧Intermittent
圖式中，不同視圖內之相同參考文字大致表示相同或相似組件。再者，圖式僅做概略揭示且並未依比例繪示，大抵上在要強調的是其揭示本發明之原理。在文後說明中，許多實施例是參考下列圖式而揭述，其中：圖1揭示一光伏電池元件實施例之透視圖；圖2揭示一光伏電池元件實施例之布局圖；及圖3揭示一光伏電池元件實施例之另一布局圖。 In the drawings, the same reference characters in the different views generally refer to the same or similar components. In addition, the drawings are merely illustrative and not to scale, and it is generally emphasized that the principles of the invention are disclosed. In the following description, a number of embodiments are described with reference to the following drawings, in which: FIG. 1 discloses a perspective view of a photovoltaic cell component embodiment; FIG. 2 discloses a layout diagram of an embodiment of a photovoltaic cell component; Another layout of a photovoltaic cell component embodiment.
諸實施例大抵關於多數裝置，例如，用於將光能轉換成電能之裝置。較特別的，裝置可以是光伏電池元件或包括複數個光伏電池元件之光伏電池模組。圖1揭示一光伏電池元件100實施例之透視圖。光伏電池元件100包括一基板101。基板101例如可為一單晶性、多晶性、非晶性或化合物半導體基板。其他類型基板也可以使用。在一實施例中，一矽基板使用做為半導體基板。在一實施例中，基板包括第一及第二表面。第一表面可包括一光接收表面或一前表面106，而第二表面可包括一非光接收表面或一後表面107。在一實施例中，基板101摻入一p型摻雜劑，及基板中之一前表面層109摻入一n型摻雜劑。前表面層109一般稱為一放射層。p型摻雜劑可包括硼(B)或任意其他元件或做為矽中之一p型摻雜劑的元件組合。n型摻雜劑可包括磷(P)或任意其他元件或做為矽中之一n型摻雜劑的元件組合。在另一實施例中，基板101摻入一n型摻雜劑，及基板中之前表面層109摻入一p型摻雜劑。在所有實施例中，一抗反射層110可設置於前表面上。基板101之厚度可以從大約10μm至大約500μm。基板之尺寸可以是大約15.6×15.6cm2。基板之其他尺寸例如大約12.5×12.5cm2或大約10×10cm2也可以使用。 Embodiments are generally directed to most devices, such as devices for converting light energy into electrical energy. More particularly, the device can be a photovoltaic cell component or a photovoltaic cell module comprising a plurality of photovoltaic cell components. FIG. 1 discloses a perspective view of an embodiment of a photovoltaic cell component 100. Photovoltaic cell component 100 includes a substrate 101. The substrate 101 can be, for example, a single crystal, polycrystalline, amorphous or compound semiconductor substrate. Other types of substrates can also be used. In one embodiment, a germanium substrate is used as a semiconductor substrate. In an embodiment, the substrate includes first and second surfaces. The first surface can include a light receiving surface or a front surface 106, and the second surface can include a non-light receiving surface or a back surface 107. In one embodiment, the substrate 101 incorporates a p-type dopant, and one of the front surface layers 109 of the substrate incorporates an n-type dopant. The front surface layer 109 is generally referred to as a radiation layer. The p-type dopant may comprise boron (B) or any other element or a combination of elements that are one of the p-type dopants in the crucible. The n-type dopant may comprise phosphorus (P) or any other element or a combination of elements that are one of the n-type dopants in the ruthenium. In another embodiment, the substrate 101 incorporates an n-type dopant, and the front surface layer 109 in the substrate incorporates a p-type dopant. In all embodiments, an anti-reflective layer 110 can be disposed on the front surface. The thickness of the substrate 101 may be from about 10 μm to about 500 μm. The size of the substrate may be about 15.6 × 15.6cm 2. Other dimensions of the substrate such as about 12.5 x 12.5 cm 2 or about 10 x 10 cm 2 may also be used.
在一實施例中，如圖1中所示，基板101之前表面106可包括複數個前表面電極。前表面電極可包括複數個 前表面匯流排條電極102及複數個前表面指狀電極103。例如，前表面電極可包括三個前表面匯流排條電極102及大量的前表面指狀電極103，如圖1中所示。設置其他數量之前表面匯流排條電極也可以，例如二或四個。基板之後表面包括後表面接頭108。在一實施例中，後表面接頭可包括一或多個完全覆蓋光伏電池後表面之導電層。導電層可包括一金屬，例如鋁、鉬、銀或其組合。在另一實施例中，光伏電池之後表面並未由後表面接頭完全覆蓋。例如，後表面接頭可具有一與前表面電極相似之架構。設置其他架構之後表面接頭或由其他材料構成也可以。 In an embodiment, as shown in FIG. 1, the front surface 106 of the substrate 101 may include a plurality of front surface electrodes. The front surface electrode may include a plurality of The front surface is connected to the row bar electrode 102 and the plurality of front surface finger electrodes 103. For example, the front surface electrode can include three front surface bus bar electrodes 102 and a plurality of front surface finger electrodes 103, as shown in FIG. It is also possible to set the other number of surface bus bar electrodes, for example two or four. The back surface of the substrate includes a back surface joint 108. In an embodiment, the back surface joint may include one or more conductive layers that completely cover the back surface of the photovoltaic cell. The conductive layer can comprise a metal such as aluminum, molybdenum, silver or a combination thereof. In another embodiment, the rear surface of the photovoltaic cell is not completely covered by the back surface joint. For example, the back surface joint can have a similar structure to the front surface electrode. Surface joints or other materials may be used after setting other architectures.
圖2揭示一光伏電池元件200之一實施例之布局圖。本實施例中與圖1中所示者相似之元件即不予以贅述或詳述。前表面指狀電極103可以是架構用於集收光致載體之電極。複數個前表面指狀電極103大致上可配置平行於彼此及平行於基板之一緣部以及基板之幾乎整個前表面。一前表面指狀電極103之寬度可以在大約30μm與大約100μm之間，例如大約60μm。前表面指狀電極103可以有或無相同寬度。前表面指狀電極可以呈等距間隔。二相鄰前表面指狀電極之間距可在大約1mm與大約3mm之間，例如大約2mm。具有不均一間距之前表面指狀電極也可以使用。前表面指狀電極可由銅、銀、諸金屬之其中一者做為主成分的合金或任意其他導電性材料構成。例如，前表面指狀電極103以及前表面匯流排條電極102及/或前表面冗餘線電極(redundancy line electrodes)104、 105可使用許多方法製成，像是工業上可用之製造方法，例如網版印刷、滾筒印刷、噴墨印刷、等等。 2 shows a layout of an embodiment of a photovoltaic cell component 200. Elements in this embodiment that are similar to those shown in FIG. 1 are not described or described in detail. The front surface finger electrode 103 can be an electrode that is configured to collect the photoinduced carrier. The plurality of front surface finger electrodes 103 are substantially configurable parallel to each other and to one edge of the substrate and substantially the entire front surface of the substrate. The width of a front surface finger electrode 103 can be between about 30 [mu]m and about 100 [mu]m, such as about 60 [mu]m. The front surface finger electrodes 103 may or may not have the same width. The front surface finger electrodes can be equally spaced. The distance between two adjacent front surface finger electrodes may be between about 1 mm and about 3 mm, such as about 2 mm. Surface finger electrodes can also be used before having a non-uniform spacing. The front surface finger electrode may be composed of an alloy containing copper, silver, or a metal as a main component or any other conductive material. For example, front surface finger electrodes 103 and front surface bus bar electrodes 102 and/or front surface redundant line electrodes 104, 105 can be made using a number of methods, such as industrially available manufacturing methods such as screen printing, roll printing, ink jet printing, and the like.
前表面匯流排條電極102可以是架構用於擷取指狀電極103所集收載體之電極。在一實施例中，三個前表面匯流排條電極102配置於基板之前表面106上，以耦合於前表面指狀電極103。其他數量之匯流排條電極102也可以，例如二或四個。前表面匯流排條電極102大致上可平行於彼此及大致上垂直於前表面指狀電極103。一前表面匯流排條電極之寬度可以在大約0.5mm與大約2.5mm之間，例如大約1.5mm。前表面匯流排條電極可具有一連續性寬度或者寬度可以沿著一前表面匯流排條電極之長度改變，及一前表面匯流排條電極例如可以朝其端部漸縮。前表面匯流排條電極可以有或無相同寬度。前表面匯流排條電極可以呈等距間隔。二相鄰前表面匯流排條電極之間之間隔可以取決於電池尺寸及匯流排條電極之數量。例如，對於具有三個前表面匯流排條電極102之15.6×15.6cm2光伏電池元件而言，二相鄰前表面匯流排條電極之間之間隔可以是大約40mm。具有不均一間隔之前表面匯流排條電極102也可以使用。前表面匯流排條電極102可以使用與指狀電極者相同材料製成，及較佳可由一可焊接材料製成，及可具有一與指狀電極者相同或不同厚度。 The front surface bus bar electrode 102 may be an electrode that is configured to capture the carrier collected by the finger electrode 103. In one embodiment, three front surface bus bar electrodes 102 are disposed on the front surface 106 of the substrate to couple to the front surface finger electrodes 103. Other numbers of bus bar electrodes 102 may also be, for example, two or four. The front surface bus bar electrodes 102 are substantially parallel to each other and substantially perpendicular to the front surface finger electrodes 103. The width of a front surface bus bar electrode may be between about 0.5 mm and about 2.5 mm, such as about 1.5 mm. The front surface bus bar electrode may have a continuous width or width that may vary along the length of a front surface bus bar electrode, and a front surface bus bar electrode may, for example, taper toward its end. The front surface bus bar electrodes may or may not have the same width. The front surface bus bar electrodes may be equally spaced. The spacing between the two adjacent front surface bus bar electrodes may depend on the size of the battery and the number of bus bar electrodes. For example, for a 102 15.6 × 15.6cm 2 photovoltaic element having three bus bar electrode front surface, the distance between the front surface of the two adjacent bus bar electrodes may be about 40mm. The surface bus bar electrode 102 can also be used before having a non-uniform spacing. The front surface bus bar electrode 102 can be made of the same material as the finger electrode, and can preferably be made of a solderable material, and can have the same or different thickness as the finger electrode.
前表面冗餘線電極104、105可以是架構用於提供低電阻電流路徑之電極，特別是當電池含有中斷之指狀電極103時。較佳地，前表面冗餘線電極104、105提供用於 當其從一前表面匯流排條電極102延伸至一相鄰之前表面匯流排條電極102時，可使各指狀電極103相交於至少一第一前表面冗餘線電極105，及/或進一步用於當其從一前表面匯流排條電極102延伸向基板101之一緣部時，可使各指狀電極103連接於至少一第二前表面冗餘線電極104。前表面冗餘線電極104、105可以大致垂直於指狀電極103及大致平行於匯流排條電極線102，但是其較佳比匯流排條電極線102窄，以利於不大致減小光伏電池之光接收面積。一前表面冗餘線電極104、105之寬度可以在30μm與500μm之間，較佳在50μm與400μm之間，例如大約60μm。例如，前表面冗餘線電極104、105可以較窄於寬度的一半，較佳為窄於寬度的四分之一，及最佳為小於匯流排條電極102之寬度的10%。前表面冗餘線電極104、105可以有或無相同寬度。前表面冗餘線電極104、105可以使用與指狀電極者相同材料製成，及可具有一與指狀電極103者相同或不同厚度。 The front surface redundant line electrodes 104, 105 may be electrodes configured to provide a low resistance current path, particularly when the battery contains interrupted finger electrodes 103. Preferably, the front surface redundant line electrodes 104, 105 are provided for When it extends from a front surface bus bar electrode 102 to an adjacent front surface bus bar electrode 102, each finger electrode 103 can be intersected to at least one first front surface redundant wire electrode 105, and/or further When it extends from a front surface bus bar electrode 102 toward one edge of the substrate 101, each finger electrode 103 can be connected to at least one second front surface redundant wire electrode 104. The front surface redundant line electrodes 104, 105 may be substantially perpendicular to the finger electrodes 103 and substantially parallel to the bus bar electrode lines 102, but are preferably narrower than the bus bar electrode lines 102 to facilitate substantially reducing the photovoltaic cells. Light receiving area. The width of a front surface redundant wire electrode 104, 105 may be between 30 μm and 500 μm, preferably between 50 μm and 400 μm, for example about 60 μm. For example, the front surface redundant line electrodes 104, 105 may be narrower than half the width, preferably narrower than a quarter of the width, and optimally less than 10% of the width of the bus bar electrode 102. The front surface redundant wire electrodes 104, 105 may or may not have the same width. The front surface redundant wire electrodes 104, 105 may be made of the same material as the finger electrodes, and may have the same or different thickness as the finger electrodes 103.
在一實施例中，前表面指狀電極103在相鄰匯流排條電極102之間呈連續狀。大致平行於匯流排條電極線102之複數個冗餘線電極104、105可配置於基板之前表面106上。在一實施例中，各兩相鄰匯流排條電極102之間之一第一冗餘線電極105係含括在基板之前表面106上。例如，第一冗餘線電極105可以定位在兩相鄰前表面匯流排條電極102之間之大約中間處。令第一冗餘線電極105含括在兩相鄰前表面匯流排條電極102之間之其他位置也 是可以的。冗餘線電極104、105可以是不同寬度。在一替代性實施例中，各兩相鄰匯流排條電極102之間設有二或多個冗餘線電極104。冗餘線電極104、105之其他架構也可以使用。例如，也可以有一或多個第二前表面冗餘線電極104含括在最外側的前表面匯流排條電極102與光伏電池元件緣部之間。將連接指狀電極103最外端的第二前表面冗餘線電極104含括在內也是有助益的，即其大致平行於電池緣部。 In one embodiment, the front surface finger electrodes 103 are continuous between adjacent bus bar electrodes 102. A plurality of redundant line electrodes 104, 105 substantially parallel to the bus bar electrode lines 102 may be disposed on the front surface 106 of the substrate. In one embodiment, one of the first redundant wire electrodes 105 between each of the two adjacent bus bar electrodes 102 is included on the front surface 106 of the substrate. For example, the first redundant line electrode 105 can be positioned approximately midway between two adjacent front surface bus bar electrodes 102. The first redundant line electrode 105 is included in other positions between the two adjacent front surface bus bar electrodes 102. is allowed. The redundant wire electrodes 104, 105 can be of different widths. In an alternative embodiment, two or more redundant wire electrodes 104 are disposed between each of the two adjacent bus bar electrodes 102. Other architectures of redundant line electrodes 104, 105 can also be used. For example, one or more second front surface redundant wire electrodes 104 may also be included between the outermost front surface bus bar electrodes 102 and the edge of the photovoltaic cell element. It is also helpful to include the second front surface redundant wire electrode 104 that connects the outermost ends of the finger electrodes 103, i.e., it is substantially parallel to the edge of the battery.
在指狀電極中斷的情況中，冗餘線電極104、105連接指狀電極103，以致使電流流至相鄰之指狀電極103。當設有上述類型冗餘線104、105之光伏電池使用於模組生產時，生產結果顯示所製成之光伏模組罕有降低效率者。品質測試也指出冗餘線電極104、105在安裝於發電廠後將增加光伏模組之實際使用壽命。 In the case where the finger electrodes are interrupted, the redundant line electrodes 104, 105 are connected to the finger electrodes 103 to cause current to flow to the adjacent finger electrodes 103. When photovoltaic cells with redundant wires 104, 105 of the above type are used for module production, the production results show that the photovoltaic modules produced are rarely reduced in efficiency. The quality test also indicates that the redundant wire electrodes 104, 105 will increase the actual service life of the photovoltaic module after installation in a power plant.
圖3揭示一光伏電池元件300之一架構之又一實施例。與圖1及2中所示者相似之本實施例特性將不予以贅述或詳述。在一實施例中，前表面指狀電極103在相鄰匯流排條電極102之間呈間斷狀。以「D」表示之間斷處可定位在兩相鄰匯流排條電極102之間之大約中間處。間斷處可以大約等於指狀電極間距。令間斷處小於指狀電極間距也可以。間斷處「D」可以在大約50μm與大約3000μm之間，例如大約100μm。在一實施例中，基板之前表面包括配置在各兩相鄰前表面匯流排條電極102之間以利連接各間斷指狀電極103之第一冗餘線電極105，及包括 在最外側前表面匯流排條電極102與光伏電池元件緣部之間之第二冗餘線電極104。例如，二或多個第一冗餘線電極105可以配置在各兩相鄰前表面匯流排條電極102之間，諸第一冗餘線電極105之其中一者將待耦合於諸前表面匯流排條電極102之其中一者的間斷指狀電極端部連接，而諸第一冗餘線電極105之另一者將待耦合於諸前表面匯流排條電極102之另一者的間斷指狀電極端部連接。其中，二或多個第一冗餘線電極105可以圍封間斷處D。例如，一或多個第二冗餘線電極104可包括用於連接靠近基板緣部之前表面指狀電極103之最外側端部。冗餘線電極104、105之寬度可以在大約30μm與大約500μm之間，例如大約60μm。冗餘線電極104、105可以是不同寬度。冗餘線電極104、105可以由與指狀電極103者相同之材料構成，及可以具有與指狀電極103者相同或不同之厚度。 FIG. 3 discloses yet another embodiment of an architecture of a photovoltaic cell component 300. Features of this embodiment that are similar to those shown in Figures 1 and 2 will not be described or described in detail. In one embodiment, the front surface finger electrodes 103 are discontinuous between adjacent bus bar electrodes 102. The "D" indicates that the discontinuity can be positioned approximately midway between the two adjacent bus bar electrodes 102. The discontinuity can be approximately equal to the finger electrode spacing. It is also possible to make the discontinuity smaller than the finger electrode spacing. The discontinuity "D" may be between about 50 μm and about 3000 μm, for example about 100 μm. In one embodiment, the front surface of the substrate includes a first redundant line electrode 105 disposed between each of the two adjacent front surface bus bar electrodes 102 to facilitate connection of the respective finger electrodes 103, and includes A second redundant wire electrode 104 is connected between the row electrode 102 and the edge of the photovoltaic cell element at the outermost front surface. For example, two or more first redundant line electrodes 105 may be disposed between each two adjacent front surface bus bar electrodes 102, one of the first redundant line electrodes 105 to be coupled to the front surface confluence The intermittent finger electrodes of one of the row electrodes 102 are connected, and the other of the first redundant wire electrodes 105 is to be coupled to the discontinuous fingers of the other of the front surface bus bar electrodes 102. The electrode ends are connected. Wherein, two or more first redundant line electrodes 105 may enclose the discontinuity D. For example, one or more second redundant wire electrodes 104 may include an outermost end portion for connecting the surface finger electrodes 103 prior to the edge of the substrate. The width of the redundant line electrodes 104, 105 may be between about 30 [mu]m and about 500 [mu]m, such as about 60 [mu]m. The redundant wire electrodes 104, 105 can be of different widths. The redundant line electrodes 104, 105 may be made of the same material as the finger electrodes 103, and may have the same or different thickness as the finger electrodes 103.
在圖3所示之示範性實施例中，基板之前表面包括三個匯流排條電極102、設於各兩相鄰前表面匯流排條電極102之間以利連接間斷指狀電極103端部的二個第一冗餘線105及連接指狀電極103最外側端部的二個第二冗餘線104。冗餘線104、105之數量可以隨著匯流排條電極102之數量及指狀電極102之間斷處之數量而改變。 In the exemplary embodiment shown in FIG. 3, the front surface of the substrate includes three bus bar electrodes 102 disposed between each of the two adjacent front surface bus bar electrodes 102 to facilitate connection of the ends of the intermittent finger electrodes 103. Two first redundant lines 105 and two second redundant lines 104 connecting the outermost ends of the finger electrodes 103. The number of redundant lines 104, 105 may vary with the number of bus bar electrodes 102 and the number of breaks between the finger electrodes 102.
此架構容許電氣性區隔電池之區段。電池之區段電氣性區隔可以藉由去除(例如，雷射剝蝕)冗餘線之間之間斷處D區域中之放射層而進一步加強。這對於區隔之電池區 段的個別電氣特徵有利。 This architecture allows for the electrical segmentation of the battery section. The electrical segmentation of the segments of the battery can be further enhanced by removing (e.g., laser ablation) the radiation layer in the region of the break between the redundant lines. This is for the battery area that is separated The individual electrical characteristics of the segment are advantageous.
如圖2或3中所示之複數個光伏電池元件可以藉由連接構件(例如線材、條帶或翼片)連接於彼此，及利用聚合物與玻璃層囊封，以形成一光伏電池模組。在一實施例中，匯流排條電極102例如藉由焊接一金屬帶於各匯流排條電極102而耦合於連接構件，而冗餘線電極104、105較佳為不耦合於任何連接構件。在一實施例中，匯流排條電極102藉由連接構件電氣性互連於相鄰電池之後表面接頭。在一光伏電池模組中之光伏電池元件數量例如可以是10×6或12×6。其他架構也可以使用。 A plurality of photovoltaic cell elements as shown in FIG. 2 or 3 may be connected to each other by a connecting member (for example, a wire, a strip or a fin), and encapsulated with a polymer and a glass layer to form a photovoltaic cell module. . In one embodiment, bus bar electrodes 102 are coupled to the connecting member, for example by soldering a metal strip to each bus bar electrode 102, and redundant wire electrodes 104, 105 are preferably not coupled to any connecting member. In an embodiment, the bus bar electrodes 102 are electrically interconnected to adjacent battery back surface contacts by connecting members. The number of photovoltaic cell components in a photovoltaic cell module can be, for example, 10 x 6 or 12 x 6. Other architectures are also available.
本發明可在不悖離本發明之範疇下，以其他特定架構實施。因此，上述實施例皆應被視為揭示，而非侷限本文內所述之本發明。本發明之範疇因此由文後之申請專利範圍表示，而非上述說明，且與申請專利範圍等同之含義及範圍內之所有變化皆涵括於其中。 The present invention can be embodied in other specific constructions without departing from the scope of the invention. Accordingly, the above-described embodiments are to be considered as illustrative and not restrictive. The scope of the invention is therefore intended to be embraced by the scope of the claims
配合一特定距離或尺寸之用辭，例如「大約」，其應解釋成不排除該特定距離或尺寸之些許偏差，及其可包括例如高達20%的示範性偏差。再者，例如「大致平行於」或「大致垂直於」等辭應解釋成不排除該特定配置方式之些許偏差，及其可包括例如高達20°的示範性偏差。 The use of a particular distance or size, such as "about", is to be interpreted as not excluding a slight deviation of the particular distance or size, and may include, for example, an exemplary deviation of up to 20%. Further, terms such as "substantially parallel to" or "substantially perpendicular to" are to be interpreted as not excluding a slight variation of the particular configuration, and may include exemplary deviations such as up to 20[deg.].
最後，應該注意的是「包含」一辭並不排除其他元件或步驟，及「a」、「an」等冠詞並不排除複數個。同樣地，不同的相關實施例中所揭述之元件也可以組合。同樣應注意的是申請專利範圍中之參考編號不應解釋成限制其 範疇。 Finally, it should be noted that the word "comprising" does not exclude other elements or steps, and the articles "a" and "an" do not exclude the plural. Likewise, elements disclosed in different related embodiments may also be combined. It should also be noted that the reference numbers in the scope of the patent application should not be construed as limiting category.
100‧‧‧光伏電池元件 100‧‧‧Photovoltaic cell components
101‧‧‧基板 101‧‧‧Substrate
102‧‧‧前表面匯流排條電極 102‧‧‧ front surface bus bar electrode
103‧‧‧前表面指狀電極 103‧‧‧ front surface finger electrode
105‧‧‧冗餘線電極 105‧‧‧Redundant wire electrode
106‧‧‧前表面 106‧‧‧ front surface
107‧‧‧後表面 107‧‧‧Back surface
108‧‧‧後表面接頭 108‧‧‧Back surface joint
109‧‧‧前表面層 109‧‧‧ front surface layer
110‧‧‧抗反射層 110‧‧‧Anti-reflective layer
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| CN110335902A (en) * | 2017-03-09 | 2019-10-15 | 伟创力有限公司 | Stacked tile type array solar cells and manufacture include the method for the solar components of stacked tile type array solar cells |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2509097A (en) | 2014-06-25 |
| WO2014096929A3 (en) | 2014-11-20 |
| WO2014096929A8 (en) | 2014-09-04 |
| WO2014096929A2 (en) | 2014-06-26 |
| USD741793S1 (en) | 2015-10-27 |
| GB201223019D0 (en) | 2013-01-30 |
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