TWI670862B - Solar cell module - Google Patents
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- TWI670862B TWI670862B TW107125166A TW107125166A TWI670862B TW I670862 B TWI670862 B TW I670862B TW 107125166 A TW107125166 A TW 107125166A TW 107125166 A TW107125166 A TW 107125166A TW I670862 B TWI670862 B TW I670862B
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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
一種太陽能電池模組結構，包含一導電連接件，包含一第一連接凹槽位於所述導電連接件的一上部，朝向一第一方向，以及一第二連接凹槽位於所述導電連接件的一下部，朝向一第二方向；一第一太陽能電池單元，其一端***所述第一連接凹槽，並與所述導電連接件電連接；以及一第二太陽能電池單元，其一端***所述第二連接凹槽，並與所述導電連接件電連接。其中所述導電連接件具有一S型剖面輪廓或者一蛇型剖面輪廓，而第一方向與該第二方向互為相反方向。 A solar cell module structure comprising a conductive connecting member, comprising a first connecting groove at an upper portion of the conductive connecting member facing a first direction, and a second connecting groove at the conductive connecting member a second portion facing a second direction; a first solar cell unit having one end inserted into the first connection groove and electrically connected to the conductive connection member; and a second solar battery unit having one end inserted therein The second connecting groove is electrically connected to the conductive connecting member. Wherein the conductive connecting member has an S-shaped cross-sectional profile or a serpentine cross-sectional profile, and the first direction and the second direction are opposite to each other.
Description
本發明係有關於一種太陽能電池技術領域，特別是有關一種改良的太陽能電池模組結構，可以提升模組發電量。 The invention relates to the field of solar cell technology, in particular to an improved solar cell module structure, which can increase the power generation of the module.
已知，太陽能電池(solar cell)是以p-型及n-型半導體材料接合構成正、負極的光電元件，當太陽能電池經陽光照射後會吸收太陽光能而產生電子及電洞，正電荷(電洞)與負電荷(電子)會分別往正(p-型)、負極(n-型)方向移動，產生直流電流。這種光電元件能把光能轉換成電能，因此亦被稱為光伏電池(photovoltaic，簡稱PV)。 It is known that a solar cell is a photovoltaic element that combines a p-type and an n-type semiconductor material to form a positive and a negative electrode. When the solar cell is exposed to sunlight, it absorbs solar energy and generates electrons and holes, and a positive charge. The (hole) and the negative charge (electron) move in the positive (p-type) and negative (n-type) directions to generate a direct current. Such photovoltaic elements are capable of converting light energy into electrical energy and are therefore also referred to as photovoltaics (PV).
通常，太陽能電池的製造方法係先進行晶圓表面清潔與粗糙化處理，然後進行擴散製程，在晶圓表面形成磷玻璃層及摻雜射極(emitter)區域，接著以蝕刻製程去除磷玻璃層，再形成抗反射層，然後，利用網印技術於電池正、背面以金屬漿料網印出電極圖案，然後進行高溫燒結，形成電極。最後將電池(例如6x10或6x12陣列)排列定位於玻璃基板上，再進行串焊(stringer)，透過銅箔銲線(ribbon)將電池單元串接成太陽能模組。 Generally, the solar cell manufacturing method is to perform wafer surface cleaning and roughening treatment, and then perform a diffusion process to form a phosphor glass layer and an impurity emitter region on the surface of the wafer, and then remove the phosphor glass layer by an etching process. Then, an anti-reflection layer is formed, and then the electrode pattern is printed on the metal paste web on the front and back sides of the battery by screen printing technology, and then sintered at a high temperature to form an electrode. Finally, the battery (for example, 6x10 or 6x12 array) is arranged on the glass substrate, and then stringer is connected, and the battery unit is serially connected into the solar module through the copper foil.
然而，過去的太陽能電池模組需透過位於太陽能電池陣列旁的匯流焊帶與位於各太陽能電池單元之間的互連接焊帶電性連接，因此各太陽能電池單元之間需要預留較大的間隔距離，換言之，過去太陽能電池模組的設計，無法貢獻轉發電的區域比例相對較高，因此有需要進一步改良。 However, in the past, the solar cell module needs to be electrically connected to the interconnecting solder ribbon between the solar cell units through the bus bar located beside the solar cell array, so that a large separation distance needs to be reserved between the solar cells. In other words, in the past, the design of solar cell modules has a relatively high proportion of regions that cannot contribute to forwarding power, so there is a need for further improvement.
本發明之主要目的在提供一種改良的太陽能電池模組，採用疊片式設計，可以進一步提升模組發電量。 The main object of the present invention is to provide an improved solar cell module which adopts a laminated design to further increase the power generation of the module.
根據本發明一實施例，提供一種太陽能電池模組結構，包含一導電連接件，包含一第一連接凹槽位於所述導電連接件的一上部，朝向一第一方向，以及一第二連接凹槽位於所述導電連接件的一下部，朝向一第二方向；一第一太陽能電池單元，其一端***所述第一連接凹槽，並與所述導電連接件電連接；以及一第二太陽能電池單元，其一端***所述第二連接凹槽，並與所述導電連接件電連接。其中所述導電連接件具有一S型剖面輪廓或者一蛇型剖面輪廓，而第一方向與該第二方向互為相反方向。 According to an embodiment of the present invention, a solar cell module structure includes a conductive connecting member, including a first connecting recess at an upper portion of the conductive connecting member, facing a first direction, and a second connecting recess a slot is located at a lower portion of the conductive connector, facing a second direction; a first solar cell unit having one end inserted into the first connecting recess and electrically connected to the conductive connecting member; and a second solar energy The battery unit has one end inserted into the second connection groove and electrically connected to the conductive connection. Wherein the conductive connecting member has an S-shaped cross-sectional profile or a serpentine cross-sectional profile, and the first direction and the second direction are opposite to each other.
根據本發明一實施例，所述第一連接凹槽具有一第一頂表面、一第一側表面及一第一底表面，所述第二連接凹槽具有一第二頂表面、一第二側表面及一第二底表面。位於所述第一太陽能電池單元的一上表面的一上電極係經由一第一導電件與所述第一頂表面電性連接，位於所述第二太陽能電池單元的一底表面的一下電極係經由一第二導電件與所述第二底表面電性連接。 According to an embodiment of the invention, the first connecting groove has a first top surface, a first side surface and a first bottom surface, and the second connecting groove has a second top surface and a second a side surface and a second bottom surface. An upper electrode located on an upper surface of the first solar cell unit is electrically connected to the first top surface via a first conductive member, and a lower electrode system located on a bottom surface of the second solar cell unit The second bottom surface is electrically connected via a second conductive member.
本發明採用疊片設計的太陽能電池模組結構，係透過導電連接件將電池單元以更緊密的方式互相連結，電池單元的邊緣稍微重疊，讓電池間不會存有縫隙，因此在同樣的單位面積中可以鋪設更多電池，吸光面積增加，進一步提升模組發電量。而且透過導電連接件的連接，可以實現電池單元的二維陣列排列，電池模組組裝後十分平整，不會呈現階梯狀的落差，在封裝處理上更加方便，封裝困難度降低，故能提高製程良率。 The solar cell module structure of the invention adopts a laminated chip design, and the battery cells are connected to each other in a tighter manner through the conductive connecting members, and the edges of the battery cells are slightly overlapped so that there is no gap between the batteries, so in the same unit More batteries can be laid in the area, and the light absorption area is increased to further increase the power generation of the module. Moreover, through the connection of the conductive connecting members, the two-dimensional array arrangement of the battery cells can be realized, the battery modules are very flat after assembly, and there is no step-like drop, which is more convenient in packaging processing, and the packaging difficulty is reduced, so that the process can be improved. Yield.
為讓本發明之上述目的、特徵及優點能更明顯易懂，下文特舉較佳實施方式，並配合所附圖式，作詳細說明如下。然而如下之較佳實施方式與圖式僅供參考與說明用，並非用來對本發明加以限制者。 The above described objects, features and advantages of the present invention will become more apparent from the description of the appended claims. However, the following preferred embodiments and drawings are for illustrative purposes only and are not intended to limit the invention.
1、2‧‧‧太陽能電池模組 1, 2‧‧‧ solar battery module
100‧‧‧導電連接件 100‧‧‧Electrical connectors
100a、100b、100c‧‧‧導電連接件 100a, 100b, 100c‧‧‧ conductive connectors
101‧‧‧上部 101‧‧‧ upper
101a‧‧‧頂面 101a‧‧‧ top
101b‧‧‧側面 101b‧‧‧ side
102‧‧‧中間連接部 102‧‧‧Intermediate connection
103‧‧‧下部 103‧‧‧ lower
103a‧‧‧底面 103a‧‧‧ bottom
103b‧‧‧側面 103b‧‧‧ side
110‧‧‧第一連接凹槽 110‧‧‧First connection groove
110a‧‧‧第一頂表面 110a‧‧‧First top surface
110b‧‧‧第一側表面 110b‧‧‧ first side surface
110c‧‧‧第一底表面 110c‧‧‧ first bottom surface
120‧‧‧第二連接凹槽 120‧‧‧Second connection groove
120a‧‧‧第二頂表面 120a‧‧‧Second top surface
120b‧‧‧第二側表面 120b‧‧‧Second side surface
120c‧‧‧第二底表面 120c‧‧‧second bottom surface
200‧‧‧太陽能電池單元 200‧‧‧Solar battery unit
200a~200g‧‧‧太陽能電池單元 200a~200g‧‧‧ solar battery unit
210‧‧‧上表面 210‧‧‧ upper surface
211‧‧‧上電極 211‧‧‧Upper electrode
220‧‧‧底表面 220‧‧‧ bottom surface
221‧‧‧下電極 221‧‧‧ lower electrode
310、320、330、340‧‧‧導電件 310, 320, 330, 340‧‧‧ conductive parts
410、420‧‧‧導電膠層 410, 420‧‧‧ conductive adhesive layer
510、520‧‧‧絕緣層 510, 520‧‧‧ insulation
610、620‧‧‧光學反射膜 610, 620‧‧‧ optical reflective film
IL‧‧‧光線 IL‧‧‧Light
第1圖為依據本發明一實施例所繪示的太陽能電池模組的部分剖面示意圖。 FIG. 1 is a partial cross-sectional view showing a solar cell module according to an embodiment of the invention.
第2圖為依據本發明另一實施例所繪示的太陽能電池模組的部分剖面示意圖。 FIG. 2 is a partial cross-sectional view showing a solar cell module according to another embodiment of the present invention.
在下文中，將參照附圖說明細節，該些附圖中之內容亦構成說明書細節描述的一部份，並且以可實行該實施例之特例描述方式來繪示。下文實施例已描述足夠的細節俾使該領域之一般技藝人士得以具以實施。 In the following, the details will be described with reference to the drawings, which also form part of the detailed description of the specification, and are described in the manner of the specific examples in which the embodiment can be practiced. The following examples have been described in sufficient detail to enable those of ordinary skill in the art to practice.
當然，亦可採行其他的實施例，或是在不悖離文中所述實施例的前提下作出任何結構性、邏輯性、及電性上的改變。因此，下文之細節描述不應被視為是限制，反之，其中所包含的實施例將由隨附的申請專利範圍來加以界定。 Of course, other embodiments may be utilized, or any structural, logical, or electrical changes may be made without departing from the embodiments described herein. Therefore, the following detailed description is not to be considered as limiting, but the embodiments included therein are defined by the scope of the accompanying claims.
請參閱第1圖，其為依據本發明一實施例所繪示的太陽能電池模組的剖面示意圖。如第1圖所示，本發明太陽能電池模組1，包含複數個具有S型剖面輪廓或者蛇型剖面輪廓的導電連接件100。為簡化說明，第1圖中僅繪示出3個導電連接件100a、100b及100c。 Please refer to FIG. 1 , which is a cross-sectional view of a solar cell module according to an embodiment of the invention. As shown in Fig. 1, the solar cell module 1 of the present invention comprises a plurality of conductive connectors 100 having an S-shaped cross-sectional profile or a serpentine cross-sectional profile. To simplify the description, only three conductive connectors 100a, 100b, and 100c are illustrated in FIG.
根據本發明實施例，各導電連接件100包含一第一連接凹槽110位於各導電連接件100的一上部101，朝向一第一方向(例如，朝向左邊方向)，以及一第二連接凹槽120位於各導電連接件100的一下部103，朝向一第二方向(例如，朝向右邊方向)。第一方向與該第二方向互為相反方向。 According to the embodiment of the present invention, each of the conductive connecting members 100 includes a first connecting groove 110 located at an upper portion 101 of each conductive connecting member 100, facing a first direction (for example, toward the left direction), and a second connecting groove. 120 is located at a lower portion 103 of each of the conductive connectors 100, facing a second direction (eg, toward the right direction). The first direction and the second direction are opposite to each other.
根據本發明實施例，各導電連接件100的上部101及下部103係經由一中間連接部102連接起來。根據本發明實施例，導電連接件100的本體可以是由相同材料所構成的一體成型結構，例如，由銅、鋁、金或銀等金屬所鑄成的一體 成型結構，但不限於此。導電連接件100的表面還可以經過表面處理，例如，鍍膜、拋光或粗糙化等，但不限於此。 According to an embodiment of the invention, the upper portion 101 and the lower portion 103 of each of the conductive connectors 100 are connected via an intermediate connection portion 102. According to an embodiment of the invention, the body of the conductive connector 100 may be an integrally formed structure made of the same material, for example, an alloy made of metal such as copper, aluminum, gold or silver. Molded structure, but is not limited to this. The surface of the conductive connector 100 may also be subjected to surface treatment, for example, coating, polishing or roughening, etc., but is not limited thereto.
根據本發明實施例，第一連接凹槽110具有一第一頂表面110a、一第一側表面110b及一第一底表面110c，第二連接凹槽120具有一第二頂表面120a、一第二側表面120b及一第二底表面120c。 According to an embodiment of the invention, the first connecting groove 110 has a first top surface 110a, a first side surface 110b and a first bottom surface 110c, and the second connecting groove 120 has a second top surface 120a, a first Two side surfaces 120b and a second bottom surface 120c.
本發明太陽能電池模組1，包含複數個太陽能電池單元200，分別透過複數個導電連接件100串接在一起構成電池串。為簡化說明，第1圖中僅繪示出7個太陽能電池單元200a~200g。 The solar cell module 1 of the present invention comprises a plurality of solar cell units 200, which are respectively connected in series through a plurality of conductive connecting members 100 to form a battery string. To simplify the description, only seven solar battery cells 200a to 200g are shown in FIG.
根據本發明實施例，例如，太陽能電池單元200a的一端係***導電連接件100a的第一連接凹槽110，並與導電連接件100a電連接，太陽能電池單元200b的一端則是***導電連接件100a的第二連接凹槽120，並與導電連接件100a電連接。更明確的說，太陽能電池單元200a的一上表面(或受光面)210的一上電極211係經由一導電件310與第一連接凹槽110的第一頂表面110a電性連接，而位於太陽能電池單元200b的一底表面220的一下電極221係經由一導電件320與第二連接凹槽120的第二底表面120c電性連接。導電件310與導電件320的厚度均約為50微米左右。導電件310、320可以是由銅或其它合適的導電材料所構成。 According to an embodiment of the present invention, for example, one end of the solar cell unit 200a is inserted into the first connecting groove 110 of the conductive connecting member 100a, and is electrically connected to the conductive connecting member 100a, and one end of the solar battery unit 200b is inserted into the conductive connecting member 100a. The second connecting groove 120 is electrically connected to the conductive connecting member 100a. More specifically, an upper electrode 211 of an upper surface (or light receiving surface) 210 of the solar cell unit 200a is electrically connected to the first top surface 110a of the first connecting recess 110 via a conductive member 310, and is located at the solar energy. The lower electrode 221 of a bottom surface 220 of the battery unit 200b is electrically connected to the second bottom surface 120c of the second connecting groove 120 via a conductive member 320. The thickness of the conductive member 310 and the conductive member 320 are both about 50 microns. Conductive members 310, 320 may be constructed of copper or other suitable electrically conductive material.
根據本發明實施例，導電件310與第一頂表面110a之間可以另設有一導電膠層410，導電件320與第二底表面120c之間可以另設有一導電膠層420。例如，導電膠層410及420可以包含銀膠或鋁膠，但不限於此。 According to the embodiment of the present invention, a conductive adhesive layer 410 may be further disposed between the conductive member 310 and the first top surface 110a, and a conductive adhesive layer 420 may be further disposed between the conductive member 320 and the second bottom surface 120c. For example, the conductive adhesive layers 410 and 420 may include silver paste or aluminum paste, but are not limited thereto.
太陽能電池單元200b的上表面210的一上電極211連接至一導電件330，而另一太陽能電池單元200c的底表面220的一下電極221連接至一導電件340，且使導電件330與導電件340電連接在一起，例如，可以透過焊接或者以導電膠(圖未示)將導電件330與導電件340電連接在一起。導電件330與導電件340的厚度均約為50微米左右。導電件330、340可以是由銅或其它合適的導電材料所 構成。 An upper electrode 211 of the upper surface 210 of the solar cell unit 200b is connected to a conductive member 330, and a lower electrode 221 of the bottom surface 220 of the other solar cell unit 200c is connected to a conductive member 340, and the conductive member 330 and the conductive member are connected. The wires 340 are electrically connected together, for example, the conductive member 330 and the conductive member 340 may be electrically connected together by soldering or by a conductive paste (not shown). The thickness of the conductive member 330 and the conductive member 340 are both about 50 microns. The conductive members 330, 340 may be made of copper or other suitable conductive material. Composition.
太陽能電池單元200c的另一端則***導電連接件100b的第一連接凹槽110，如此重複以上連結組態，使得太陽能電池單元200c透過導電連接件100b串接至太陽能電池單元200d，再繼續連接至太陽能電池單元200e，再使太陽能電池單元200e透過導電連接件100c串接至太陽能電池單元200f，然後再繼續連接至太陽能電池單元200g。 The other end of the solar cell unit 200c is inserted into the first connecting groove 110 of the conductive connecting member 100b, and the above connecting configuration is repeated, so that the solar cell unit 200c is connected in series to the solar cell unit 200d through the conductive connecting member 100b, and then continues to be connected to The solar battery unit 200e further connects the solar battery unit 200e to the solar battery unit 200f through the conductive connecting member 100c, and then continues to connect to the solar battery unit 200g.
根據本發明實施例，太陽能電池單元200a、200c、200e、200g係位處於同一水平面上，而太陽能電池單元200b、200d、200f係位處於另一水平面上，例如，在此實施例中，太陽能電池單元200a、200c、200e、200g位處一較高的水平面，而太陽能電池單元200b、200d、200f位處於一較低的水平面。但是，兩個水平面的差距很小，約略等於各導電連接件100的中間連接部102的厚度，例如，約100微米。 According to an embodiment of the invention, the solar cell units 200a, 200c, 200e, 200g are in the same horizontal plane, while the solar cell units 200b, 200d, 200f are in another horizontal plane, for example, in this embodiment, the solar cell The cells 200a, 200c, 200e, 200g are located at a higher level, while the solar cells 200b, 200d, 200f are at a lower level. However, the difference between the two horizontal planes is small, approximately equal to the thickness of the intermediate connection portion 102 of each of the conductive connectors 100, for example, about 100 microns.
請參閱第2圖，其為依據本發明另一實施例所繪示的太陽能電池模組的剖面示意圖，其中相同的元件、區域或材料層仍沿用相同的符號來表示。如第2圖所示，太陽能電池模組2同樣包含複數個具有S型剖面輪廓或者蛇型剖面輪廓的導電連接件100。為簡化說明，第2圖中同樣僅繪示出3個導電連接件100a、100b及100c。 2 is a cross-sectional view of a solar cell module according to another embodiment of the present invention, wherein the same elements, regions or layers of materials are still denoted by the same reference numerals. As shown in FIG. 2, the solar cell module 2 also includes a plurality of conductive connectors 100 having an S-shaped cross-sectional profile or a serpentine cross-sectional profile. To simplify the description, only three conductive connectors 100a, 100b, and 100c are also illustrated in FIG.
根據本發明實施例，各導電連接件100包含一第一連接凹槽110位於各導電連接件100的一上部101，朝向一第一方向(例如，朝向左邊方向)，以及一第二連接凹槽120位於各導電連接件100的一下部103，朝向一第二方向(例如，朝向右邊方向)。第一方向與該第二方向互為相反方向。 According to the embodiment of the present invention, each of the conductive connecting members 100 includes a first connecting groove 110 located at an upper portion 101 of each conductive connecting member 100, facing a first direction (for example, toward the left direction), and a second connecting groove. 120 is located at a lower portion 103 of each of the conductive connectors 100, facing a second direction (eg, toward the right direction). The first direction and the second direction are opposite to each other.
根據本發明實施例，各導電連接件100的上部101及下部103係經由一中間連接部102連接起來。根據本發明實施例，導電連接件100的本體可以是由相同材料所構成的一體成型結構，例如，由銅、鋁、金或銀等金屬所鑄成的一體 成型結構，但不限於此。導電連接件100的表面還可以經過表面處理，例如，鍍膜、拋光或粗糙化等，但不限於此。 According to an embodiment of the invention, the upper portion 101 and the lower portion 103 of each of the conductive connectors 100 are connected via an intermediate connection portion 102. According to an embodiment of the invention, the body of the conductive connector 100 may be an integrally formed structure made of the same material, for example, an alloy made of metal such as copper, aluminum, gold or silver. Molded structure, but is not limited to this. The surface of the conductive connector 100 may also be subjected to surface treatment, for example, coating, polishing or roughening, etc., but is not limited thereto.
根據本發明實施例，第一連接凹槽110具有一第一頂表面110a、一第一側表面110b及一第一底表面110c，第二連接凹槽120具有一第二頂表面120a、一第二側表面120b及一第二底表面120c。 According to an embodiment of the invention, the first connecting groove 110 has a first top surface 110a, a first side surface 110b and a first bottom surface 110c, and the second connecting groove 120 has a second top surface 120a, a first Two side surfaces 120b and a second bottom surface 120c.
根據本發明實施例，至少於第一連接凹槽110的第一側表面110b及第一底表面110c上設置一絕緣層510，其中絕緣層510還可以延伸至第一頂表面110a，或者延伸至導電件310的一側壁。根據本發明實施例，至少於第二連接凹槽120的第二側表面120b及第二頂表面120a上設置一絕緣層520，其中絕緣層520還可以延伸至第二底表面120c，或者延伸至導電件320的一側壁。根據本發明實施例，絕緣層510及絕緣層520可以包含氮化矽，但不限於此。 An insulating layer 510 is disposed on at least the first side surface 110b and the first bottom surface 110c of the first connecting recess 110, wherein the insulating layer 510 may further extend to the first top surface 110a or extend to A side wall of the conductive member 310. According to an embodiment of the present invention, at least an insulating layer 520 is disposed on the second side surface 120b and the second top surface 120a of the second connecting groove 120, wherein the insulating layer 520 may further extend to the second bottom surface 120c or extend to A side wall of the conductive member 320. According to an embodiment of the present invention, the insulating layer 510 and the insulating layer 520 may include tantalum nitride, but are not limited thereto.
根據本發明實施例，導電連接件100的外表面係鍍有一光學反射膜。例如，在導電連接件100的上部101的外表面，包括一頂面101a及側面101b上，設置一光學反射膜610。另外，可選擇在導電連接件100的下部103的外表面，包括一底面103a及側面103b上，設置一光學反射膜620，其中光學反射膜610、620可以包含鎳、銅、鋁、銀、金或以上組合，或其合金。導電連接件100的外表面鍍有光學反射膜610、620，更可以增加光線IL入射到太陽能電池受光面上，增加電池效率。 According to an embodiment of the invention, the outer surface of the conductive connector 100 is plated with an optical reflective film. For example, on the outer surface of the upper portion 101 of the conductive connector 100, including a top surface 101a and a side surface 101b, an optical reflective film 610 is disposed. In addition, an optical reflective film 620 may be disposed on the outer surface of the lower portion 103 of the conductive connecting member 100, including a bottom surface 103a and a side surface 103b. The optical reflective film 610, 620 may include nickel, copper, aluminum, silver, gold. Or a combination of the above, or an alloy thereof. The outer surface of the conductive connector 100 is plated with optical reflective films 610, 620, which can increase the incidence of light IL on the light receiving surface of the solar cell, thereby increasing battery efficiency.
本發明太陽能電池模組結構2，同樣包含複數個太陽能電池單元200，分別透過複數個導電連接件100串接在一起構成電池串。為簡化說明，第2圖中同樣僅繪示出7個太陽能電池單元200a~200g。 The solar cell module structure 2 of the present invention also includes a plurality of solar cell units 200, which are respectively connected in series through a plurality of conductive connectors 100 to form a battery string. In order to simplify the description, only seven solar battery cells 200a to 200g are also illustrated in Fig. 2 .
根據本發明實施例，例如，太陽能電池單元200a的一端係***導電連接件100a的第一連接凹槽110，並與導電連接件100a電連接，太陽能電池單元200b的一端則是***導電連接件100a的第二連接凹槽120，並與導電連接件100a 電連接。更明確的說，太陽能電池單元200a的一上表面(或受光面)210的一上電極211係經由一導電件310與第一連接凹槽110的第一頂表面110a電性連接，而位於太陽能電池單元200b的一底表面220的一下電極221係經由一導電件320與第二連接凹槽120的第二底表面120c電性連接。 According to an embodiment of the present invention, for example, one end of the solar cell unit 200a is inserted into the first connecting groove 110 of the conductive connecting member 100a, and is electrically connected to the conductive connecting member 100a, and one end of the solar battery unit 200b is inserted into the conductive connecting member 100a. Second connecting groove 120, and the conductive connecting member 100a Electrical connection. More specifically, an upper electrode 211 of an upper surface (or light receiving surface) 210 of the solar cell unit 200a is electrically connected to the first top surface 110a of the first connecting recess 110 via a conductive member 310, and is located at the solar energy. The lower electrode 221 of a bottom surface 220 of the battery unit 200b is electrically connected to the second bottom surface 120c of the second connecting groove 120 via a conductive member 320.
根據本發明實施例，同樣的，導電件310與第一頂表面110a之間可以另設有一導電膠層410，導電件320與第二底表面120c之間可以另設有一導電膠層420。例如，導電膠層410及420可以包含銀膠或鋁膠，但不限於此。 According to the embodiment of the present invention, a conductive adhesive layer 410 may be further disposed between the conductive member 310 and the first top surface 110a. A conductive adhesive layer 420 may be further disposed between the conductive member 320 and the second bottom surface 120c. For example, the conductive adhesive layers 410 and 420 may include silver paste or aluminum paste, but are not limited thereto.
太陽能電池單元200b的上表面210的一上電極211連接至一導電件330，而另一太陽能電池單元200c的底表面220的一下電極221連接至一導電件340，且使導電件330與導電件340電連接在一起，例如，可以透過焊接或者以導電膠將導電件330與導電件340電連接在一起。太陽能電池單元200c的另一端則***導電連接件100b的第一連接凹槽110，如此重複以上連結組態，使得太陽能電池單元200c透過導電連接件100b串接至太陽能電池單元200d，再繼續連接至太陽能電池單元200e，再使太陽能電池單元200e透過導電連接件100c串接至太陽能電池單元200f，然後再繼續連接至太陽能電池單元200g。 An upper electrode 211 of the upper surface 210 of the solar cell unit 200b is connected to a conductive member 330, and a lower electrode 221 of the bottom surface 220 of the other solar cell unit 200c is connected to a conductive member 340, and the conductive member 330 and the conductive member are connected. The wires 340 are electrically connected together, for example, the conductive member 330 and the conductive member 340 may be electrically connected together by soldering or with a conductive paste. The other end of the solar cell unit 200c is inserted into the first connecting groove 110 of the conductive connecting member 100b, and the above connecting configuration is repeated, so that the solar cell unit 200c is connected in series to the solar cell unit 200d through the conductive connecting member 100b, and then continues to be connected to The solar battery unit 200e further connects the solar battery unit 200e to the solar battery unit 200f through the conductive connecting member 100c, and then continues to connect to the solar battery unit 200g.
本發明採用疊片設計的太陽能電池模組，係透過導電連接件將電池單元以更緊密的方式互相連結，電池單元的邊緣稍微重疊，讓電池間不會存有縫隙，因此在同樣的單位面積中可以鋪設更多電池，吸光面積增加，進一步提升模組發電量。而且透過導電連接件的連接，可以實現電池單元的二維陣列排列，電池模組組裝後不會呈現階梯狀的落差，在處理上更加方便，能提高製程良率。 The solar cell module adopting the lamination design of the invention connects the battery cells to each other in a tighter manner through the conductive connecting members, and the edges of the battery cells are slightly overlapped so that there is no gap between the batteries, so the same unit area More batteries can be laid in, and the light absorption area is increased to further increase the power generation of the module. Moreover, through the connection of the conductive connectors, the two-dimensional array arrangement of the battery cells can be realized, and the battery module does not exhibit a stepped drop after assembly, which is more convenient in processing and can improve the process yield.
此外，本發明採用疊片設計的太陽能電池模組透過導電連接件將電池單元以更緊密的方式互相連結，不需要焊帶，相對的節省了焊帶成本。導電連接件外表面鍍有光學反射膜，更可以增加光線入射到太陽能電池受光面上， 增加電池效率。 In addition, the solar cell module with the laminated design of the present invention connects the battery cells to each other in a tighter manner through the conductive connecting members, and does not require a soldering tape, thereby saving the cost of the soldering strip. The outer surface of the conductive connector is coated with an optical reflective film, which can increase the incidence of light on the light receiving surface of the solar cell. Increase battery efficiency.
以上所述僅為本發明之較佳實施例，凡依本發明申請專利範圍所做之均等變化與修飾，皆應屬本發明之涵蓋範圍。 The above are only the preferred embodiments of the present invention, and all changes and modifications made to the scope of the present invention should be within the scope of the present invention.
Claims (14)
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| CN117438505B (en) * | 2023-11-24 | 2024-03-22 | 浙江求是半导体设备有限公司 | Preparation method and arrangement method of photovoltaic cell and preparation equipment thereof |
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