CN104205347A - 包含搭叠光伏瓦片的光伏模块及其制造工艺 - Google Patents
包含搭叠光伏瓦片的光伏模块及其制造工艺 Download PDFInfo
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Abstract
披露了一种光伏模块。该光伏模块包括一个被安置在一个透明前基板和一个后基板之间的搭叠瓦片阵列,其中,该搭叠瓦片阵列包括相互之间电电接触并且成多个重叠排定位的多个光伏瓦片。每个光伏瓦片包括安置在一个外延膜叠层上的一个前金属接触层,该外延膜叠层被安置在一个后金属接触层上,该后金属接触层被安置在一个支持载体层上。该光伏模块包括与该搭叠瓦片阵列电接触并且被安置在该前和后玻璃基板之间的至少一个母线排。该光伏模块还包括该前和后玻璃基板之间的一个封装层。
Description
发明背景
发明领域
本发明的实施例总体上涉及光伏器件及其制造,并且更具体地涉及搭叠光伏模块和一种形成这些搭叠光伏模块的工艺。
相关技术说明
需要光伏器件和形成此类器件的制造工艺,其中,这些光伏器件具有最大电池效率,同时这些制造工艺最小化制造成本,并且提高生产能力超过当前已知的工艺。因此,希望提供此类器件。本发明解决了这种需要。
发明概述
披露了一种光伏模块。该光伏模块包括一个被安置在一个透明前基板和一个后基板之间的搭叠瓦片阵列,其中,该搭叠瓦片阵列包括相互电接触并且成多个重叠排定位的多个光伏瓦片。每个光伏瓦片包括一个被安置在一个外延膜叠层上的前金属接触层,该外延膜叠层被安置在一个后金属接触层上,该后金属接触层被安置在一个支持载体层上。该光伏模块包括与该搭叠瓦片阵列电接触并且被安置在该前和后玻璃基板之间的至少一个母线排。该光伏模块还包括该前和后玻璃基板之间的一个封装层。
附图简要说明
从而使得通过参照实施例可以获得可以详细理解以上引用的本发明特征的方式、以上简要总结的本发明的更具体的描述,附图中展示了这些实施例中的某些实施例。然而,应指出的是这些附图仅展示了本发明的典型实施例,并且因此不被认为是限制它的范围,因为本发明可以承认其他同等有效的实施例。
图1A和图1B描绘了根据在此描述的某些实施例的搭叠光伏瓦片阵列;
图1C描绘了根据在此描述的某些实施例的包含搭叠光伏瓦片的光伏模块;
图1D至图1I描绘了根据在此描述的某些实施例的搭叠光伏瓦片在不同制造步骤的逐步原理图;
图2A和图2B描绘了根据在此描述的某些实施例的光伏瓦片;
图3A和图3B描绘了根据在此描述的其他实施例的另一个光伏瓦片;以及
图4描绘了根据在此描述的另一个实施例的另一个搭叠光伏瓦片阵列。
详细说明
本发明的实施例总体上涉及光伏电池、瓦片(tile)和模块以及用于形成此类器件的制造工艺。每个光伏模块包含成多个重叠排定位的多个光伏瓦片,这些重叠排形成一个搭叠瓦片阵列。在某些实施例中,每隔一重叠排搭叠瓦片相互对齐,同时中间的重叠排相互对齐但相对于邻近的在下面的排错开。
图1A中所描绘的搭叠瓦片结构382包含多重叠排搭叠瓦片380,这样使得每隔一重叠排搭叠瓦片相互对齐,同时中间的重叠排相互对齐但是相对于邻近的在下面的排错开。搭叠瓦片结构382可以通过定位并使光伏瓦片380相互附着同时形成多重叠排光伏瓦片380来形成。
在一个实施例中,如图1A至图1C中所描绘的,单独的光伏瓦片380可以被组装形成独立的搭叠瓦片板或阵列382(图1A),可以对其进行在其上附着母线排330的进一步处理(图1B)并且随后被制造成光伏模块390(图1C)。在一个示例中,独立的搭叠瓦片板或阵列382可以通过将光伏瓦片380面向下定位成一个单排并且随后将导电粘合剂分配到后接触孔360内而形成。导电粘合剂被分配直到后接触孔360被填满并且导电粘合剂与后金属接触层308物理和电接触。在一个实施例中,还可以结合导电粘合剂材料分配绝缘粘合剂以使得物理接触在机械上更强。在这样做时,可以通过减少导电材料的量来降低制作电和机械连接的成本,因为绝缘材料会比导电材料显著地更便宜。此后,面向下的光伏瓦片380被定位在一个第二排中,该第二排与该第一排重叠并且稍微与该第一排错开。通过将第三排光伏瓦片380附着到第二排光伏瓦片380上来重复这些步骤,这样使得该第三排与该第二排错开,但是与第一排光伏瓦片380对齐。
该第一排搭叠瓦片之后的每个连续排与下面的一排搭叠瓦片重叠,并且每隔一排搭叠瓦片相对于其之间的排错开。例如,图1A描绘了搭叠瓦片382包含多排384a-384d光伏瓦片380,作为搭叠瓦片阵列382的配置的一个示例。排384d与排384c重叠,该排与排384b重叠,该排与排384a重叠。排384a的光伏瓦片380与排384c的光伏瓦片380对齐。类似地,排384b的光伏瓦片380与排384d的光伏瓦片380对齐。然而,排384a和384c的光伏瓦片380相对于排384b和384d的光伏瓦片380错开。可以有不同错开量,其将允许用于提供搭叠光伏瓦片的不同方案。例如,当错开足够小时,可以利用一种单一类型的电池尺寸,并且当光伏瓦片之间的错开足够大时,可以利用更小的瓦片来填充该排的两端。
此外,导电材料可以选择性地被放置在搭叠瓦片之间以便于具体的电路拓扑,同时绝缘材料被放置在所有重叠区域之上以保持机械完整性。例如在一个实施例中,参见排384c和384d,导电材料可以被放置在同一列的所有电池之间,该列中电池对电池的重叠大,并且选择性地被放置在384c2和384d1、384c4和384d3之间,而不是384c3和384d2之间。在这样做时,可以在多种环境因素(部分遮挡和破坏、以及电池失配)下针对太阳能模块的性能对其互连电路拓扑进行优化。
图2A和图2B描绘了光伏瓦片380,并且图3A和图3B描绘了根据在此描述的实施例的另一个光伏瓦片380a。光伏瓦片380和380a包含在底表面上的P-金属触点342(如被安置成通过和在支持载体带320上)和在前表面上N-金属触点344以及前金属接触层350(被布置在外延膜叠层306之上)。后接触孔360延伸通过附着到每个光伏瓦片380(图2B)或光伏瓦片380a(图3B)的底或下表面上的每个支持载体带320。相互重叠或在下面的光伏瓦片380可以通过N-金属触点344相互耦合并且电接触,该金属触点通过后接触孔360电接触到后金属接触层308,这些后接触孔提供一个可以包含N-金属触点344或N-金属触点344的一部分的通路。在将该多个基板300附着到主支持载体带之前,可以形成后接触孔360通过支持载体带320,或者可以在一个不同工艺步骤形成后接触孔360通过支持载体带320。
在另一个实施例中,图4描绘了搭叠瓦片382a包含多个光伏瓦片380a,这些瓦片被分组在三个重叠排中,其中,排384c与排384b重叠,该排与排384a重叠。可替代地,包含光伏瓦片380a的排384a-384c的相同配置可以被描述为使排384a在排384b下面,该排在排384c下面。每个光伏瓦片380a包含在底表面上的P-金属触点342,如被安置通过并在支持载体带320上,并且包含在前表面上的N-金属触点344和前金属触点350,如被安置在外延膜叠层306之上。排384c的光伏瓦片380a与排384b的光伏瓦片380a重叠,并且排384c的光伏瓦片380a的P-金属触点342与排384b的光伏瓦片380a的N-金属触点344物理和电接触。类似地,排384b的光伏瓦片380a与排384a的光伏瓦片380a重叠,并且排384b的光伏瓦片380a的P-金属触点342与排384a的光伏瓦片380a的N-金属触点344物理和电接触。
在其他实施例中,用于制造光伏模块390s的方法进一步包括在将该多个基板附着到支持载体带320之前形成通过支持载体带320的多个后接触孔360。可替代地,将该多个基板附着到支持载体带320之后,例如,在ELO工艺后,后接触孔360可以形成通过支持载体带320。每个光伏瓦片的下表面包含延伸通过支持载体带320并到达后金属接触层的多个后接触孔360。
一种导电材料可以被放置、插入、分配、注入、形成、存放、或以另外的方式定位到后接触孔360内以形成一个触点或与后金属接触层308的互连。后接触孔360通常填充、并且经常填充过满导电材料。当填充过满后,过量导电材料可以用来将一对重叠的光伏瓦片附着在一起,这样使得重叠的光伏瓦片相互物理和电接触。而且,来自后接触孔360的填充过满的过量导电材料可以用于形成接片触点、P-金属触点、或可以由导电材料形成的或可以附接到导电材料的其他导电触点。导电材料可以包括导电粘合剂、导电环氧树脂、冷焊料、焊膏、银浆料、金属合金浆料、金属化浆料、导电浆料、导电油墨、网格油墨,银色油墨、或其衍生物。
在下面的排的光伏瓦片380具有一个接片触点、一个N-金属触点、或安置在上表面上的其他电性导电触点。因此,重叠排搭叠瓦片中的每个光伏瓦片的下表面上的P-金属触点与在搭叠瓦片阵列内的负遮盖排搭叠瓦片中的每个光伏瓦片的上表面上的N-金属触点物理和电接触。此外,母线排(例如,P/N母线排)可以通过如用于形成重叠光伏瓦片之间的物理和/或电触点的相同导电材料或不同导电材料(例如,导电粘合剂)附着到搭叠瓦片阵列。
可替代地,在另一个实施例中,如在图1D至图1I中所描绘的,光伏瓦片380可以被单独地定位在并附着到后玻璃基板388上以形成多重叠排光伏瓦片380,诸如搭叠瓦片382,同时制造光伏模块390。光伏瓦片380可以通过在此描述的导电粘合剂、焊料、或其他导电材料被附着。母线排330(例如,P/N母线排)可以被定位并附着到底玻璃基板388,并且光伏瓦片380可以被单独地外悬定位并附着到母线排330以形成第一排(例如,排384a)光伏瓦片380,如在图1D和图1E中所描绘的。此后,第二排(排384b)光伏瓦片380可以被单独地外悬定位并附着到排384a的光伏瓦片380,如在图1F中所描绘的。此后,第三排(排384c)的光伏瓦片380可以被单独地外悬定位并附着到排384b的光伏瓦片380,如在图1G中所描绘的。此后,第四排(排384d)光伏瓦片380可以被单独地外悬定位并附着到排384c的光伏瓦片380,如在图1H中所描绘的。此后,另一个母线排330(例如,P/N母线排)可以被单独地定位并附着到排384d的光伏瓦片380,如在图1I中所描绘的。
在此处实施例中披露的光伏瓦片可以具有不同的几何形状,其并不局限于多边形。然而,用于形成搭叠瓦片结构382或制造光伏模块390的光伏瓦片中的许多光伏瓦片具有矩形几何形状,如长方形或正方形。
一个防反射涂层(ARC)层可以沉积在搭叠瓦片阵列382的上表面上或之上。ARC层可以包含具有从大约1.8到大约3.7范围内的折射率的材料的一层或多层。在一个示例中,在形成ARC层时,两个材料层沉积在彼此的顶部上。
在此描述的另一个实施例中,组合母线排和搭叠瓦片阵列382通过模块形成工艺被附着到前玻璃基板378。包含母线排330的搭叠瓦片阵列382可以被附着到前玻璃基板378,这样使得搭叠瓦片阵列382的包含ARC层的上表面面向前玻璃基板378。母线排通常包括正/负(PN)母线排并且可以包括一个接线盒(JB)母线排。
该模块形成工艺包括围绕前玻璃基板378的内表面的外边缘分配一种边缘密封剂,并且然后将一种封装粘合剂涂在前玻璃基板378的内表面上,并且将包含母线排330的搭叠瓦片阵列382定位在前玻璃基板378的内表面上并且与封装粘合剂接触。边缘密封剂附着到前玻璃基板378用于随后与后玻璃基板388配合。
随后,该模块形成工艺进一步包括将另一种封装密封剂涂在后玻璃基板388的内表面上,翻转并定位包含面朝前的搭叠瓦片382的前玻璃基板378,这些搭叠瓦片包含母线排330,然后将前玻璃基板378定位在之上并且使前玻璃基板378与后玻璃基板388配合用于形成光伏模块390。可替代地,后玻璃基板388可以被定位在母线排330之上并且搭叠瓦片382已经附着到前玻璃基板378。
在一个实施例中,提供了一种光伏模块并且其包括一个被安置在一个前玻璃基板和一个后玻璃基板之间的搭叠瓦片阵列,这样使得该搭叠瓦片阵列包含相互之间电接触并且成多个重叠排定位的多个光伏瓦片。每个光伏瓦片通常包含一个被安置在一个外延膜叠层上或之上的前金属接触层,该外延膜叠层被安置在一个后金属接触层上或之上,该后金属接触层可以被附着到一个支持载体层的一部分或一段。ARC层可以被安置在搭叠瓦片阵列和前玻璃基板之间。在一个示例中,ARC层可以沉积在搭叠瓦片阵列的上或前表面上。该光伏模块进一步包含与搭叠瓦片阵列电接触并被安置在该前和后玻璃基板之间的母线排、以及一个覆盖或包覆该前和后玻璃基板的层压层。
虽然前述内容针对本发明的实施例,但在不脱离本发明的基本范围的情况下可以设计本发明的其他和进一步的实施例,并且本发明的范围通过下面的权利要求书确定。
Claims (20)
1.一种光伏模块,包括:
一个被安置在一个透明前基板和一个后基板之间的搭叠瓦片阵列,其中,该搭叠瓦片阵列包括相互电接触并且成多个重叠排定位的多个光伏瓦片,并且每个光伏瓦片包括一个被安置在一个外延膜叠层上的前金属接触层,该外延膜叠层被安置在一个后金属接触层上,该后金属接触层被安置在一个支持载体层上;
与该搭叠瓦片阵列电接触并且被安置在该前和后玻璃基板之间的至少一个母线排;以及
在该前和后基板之间的一个封装层。
2.如权利要求1所述的光伏模块,其中,每隔一重叠排搭叠瓦片相互对齐,同时中间的重叠排相互对齐但相对于邻近的在下面的排错开。
3.如权利要求1所述的光伏模块,其中,该至少一个母线排包括一个正/负(PN)母线排和一个接线盒(JB),该接线盒可以连接到该搭叠瓦片阵列的一个正极、一个负极或一个中间侧。
4.如权利要求3所述的光伏模块,其中,该搭叠瓦片阵列通过一种导电材料相互耦合;并且这些母线排通过该导电材料耦合到该搭叠瓦片阵列。
5.如权利要求4所述的光伏模块,其中,该导电材料包括一种焊料。
6.如权利要求4所述的光伏模块,其中,该导电材料是一种导电粘合剂。
7.如权利要求1所述的光伏模块,其中,该搭叠瓦片阵列通过导电材料和绝缘材料的一种组合相互耦合。
8.如权利要求1所述的光伏模块,其中,该搭叠瓦片阵列错开,这样使得当该错开足够小时,可以利用一种单一类型的搭叠瓦片。
9.如权利要求1所述的光伏模块,其中,该搭叠瓦片阵列错开,这样使得可以利用不同类型的搭叠瓦片,其中,如果使用一种类型的搭叠瓦片时一个错开足够大,则可以利用另一种类型的搭叠瓦片来填充一排的一端。
10.如权利要求1所述的光伏模块,其中,该导电材料根据一个具体的电拓扑被选择性地分配在这些瓦片之间。
11.如权利要求1所述的光伏模块,其中,该透明前基板包括玻璃或柔性聚合物,并且该后基板包括玻璃、聚合物、金属、或者这些材料的一种复合物中的任意一种。
12.一种用于提供光伏模块的方法,包括:
提供一个被安置在一个透明前基板和一个后基板之间的搭叠瓦片阵列,其中,该搭叠瓦片阵列包括相互电接触并且成多个重叠排定位的多个光伏瓦片,并且每个光伏瓦片包括一个安置在一个外延膜叠层上的前金属接触层,该外延膜叠层被安置在一个后金属接触层上,该后金属接触层被安置在一个支持载体层上;
提供与该搭叠瓦片阵列电接触并且被安置在该前和后玻璃基板之间的至少一个母线排;以及
在该前和后基板之间提供一个封装层。
13.如权利要求12所述的方法,其中,每隔一重叠排搭叠瓦片相互对齐,同时中间的重叠排相互对齐但相对于邻近的在下面的排列错开。
14.如权利要求12所述的方法,其中,该搭叠瓦片阵列通过一种导电材料相互耦合。
15.如权利要求14所述的方法,其中,该导电材料包括一种焊料。
16.如权利要求12所述的方法,其中,该导电材料是一种导电粘合剂。
17.如权利要求12所述的方法,其中,该搭叠瓦片阵列通过导电材料和绝缘材料的一种组合相互耦合。
18.如权利要求12所述的方法,其中,该搭叠瓦片阵列错开,这样使得当该错开足够小时,可以利用一种单一类型的搭叠瓦片。
19.如权利要求12所述的方法,其中,该搭叠瓦片阵列错开,这样使得可以利用不同类型的搭叠瓦片,其中,如果使用一种类型的搭叠瓦片时一个错开足够大,可以利用另一种类型的搭叠瓦片来填充一排的一端。
20.如权利要求14所述的光伏模块,其中,该导电材料根据一个具体的电拓扑被选择性地分配在这些瓦片之间。
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US20130206213A1 (en) | 2013-08-15 |
US10741712B2 (en) | 2020-08-11 |
EP2815433A1 (en) | 2014-12-24 |
CN110246919A (zh) | 2019-09-17 |
WO2013122757A1 (en) | 2013-08-22 |
HK1205353A1 (zh) | 2015-12-11 |
EP2815433A4 (en) | 2015-09-23 |
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