CN102782875B - 太阳能电池组件ii - Google Patents

太阳能电池组件ii Download PDF

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CN102782875B
CN102782875B CN201180010506.5A CN201180010506A CN102782875B CN 102782875 B CN102782875 B CN 102782875B CN 201180010506 A CN201180010506 A CN 201180010506A CN 102782875 B CN102782875 B CN 102782875B
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joint liner
quadrangle
limit
cooling base
solar cell
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CN102782875A (zh
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M·齐格勒
萨沙·范里森
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Augustine Canada Electric Co. Ltd.
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Concentrix Solar GmbH
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Abstract

本发明涉及太阳能电池组件，该太阳能电池组件包括：附接到接合衬垫的太阳能电池以及冷却基板，其中，接合衬垫通过导热粘接剂单元附接到冷却基板的表面并且通过接合导线将接合衬垫电接触到冷却基板，或者通过导热和导电粘接剂单元附接到冷却基板。

Description

太阳能电池组件II
技术领域
本发明涉及太阳能电池组件及其制造方法，具体地本发明涉及包括冷却基板和用于附接太阳能电池的接合衬垫的太阳能电池组件。
背景技术
光伏或者太阳能电池设计用于将太阳辐射转换为电流。在集中器太阳能光伏应用中，在被引向太阳能电池之前，入射的太阳光被光学地集中。例如，入射的太阳光被主反射镜接收，主反射镜将接收的辐射反射到次反射镜，次反射镜接着向太阳能电池反射辐射，太阳能电池通过在例如III-V半导体或者单晶硅中产生电子-空穴对来将集中的辐射转换为电流。
太阳能电池包括半导体集成电路晶片，因此要求一些集成电路封装或者太阳能电池组件的方式，其中太阳能电池连接到一个或者更多个功能装置。太阳能电池组件（SCA）可以具体地提供对太阳能电池的环境保护、热耗散和电连接。
在现有技术中，SCA在连续单基板基底上制造，或者包括彼此电隔离的多个部件。关健问题太阳能电池与SCA的基板的背面接触。现有地，用作冷却基板的连续单基板通过选择性的贵金属（例如，金）沉积接触太阳能电池的背面，沉积代表冗长、耗时并且昂贵的处理步骤。设置多个电隔离的材料元件导致差的热传导性能，因而导致太阳能电池的差的整体热连接。另外，设置不同材料特性的材料意味着更高的成本和多个连接区，因此导致所制造的SCA的可靠性（寿命）的明显劣化。
因而，尽管最近的工程发展，但是仍需要提供呈现可靠的电接触、充分的热传导性能和对老化的抵抗力而不增加成本，并且另外考虑到生产合理化的SCA。
发明内容
本发明解决上述需要，因此，提供根据权利要求1的一种制造太阳能电池组件（SCA）的方法，所述方法包括以下步骤：
设置太阳能电池和用于接合太阳能电池的接合衬垫；
设置冷却基板；以及
通过热传导粘接剂单元将焊接衬垫附接到冷却基板的表面。
根据一种实施方式并且接合衬垫到冷却基板的电接触可以通过接合导线实现。在本申请中，术语“接合衬垫”按照旨在与装置进行电接触的导电材料的平坦表面的通常含义使用。另选地，可以通过导热和导电两者粘接剂单元将接合衬垫附装到冷却基板的表面。用于本发明方法的另选示例可以包括通过接合导线将接合衬垫电接触到所述冷却基板以获得接合衬垫和冷却基板之间的改进的电连接。
可以以焊料、传导粘接剂、粘接带、胶水等形式提供粘接剂单元。在具体示例中，由包含氧化铝的环氧树脂制成的胶水或者粘接带被用作粘接剂单元。
根据本发明，在接合衬垫和冷却基板之间不需要按照本领域那样设置一些额外的电绝缘层。借助粘接剂单元并通过接合导线提供电接触能够稳定地获得接合衬垫和冷却基板之间的电接触。具体地，对于本领域中的SCA，根据本发明能够有效地减少原电池因素的整体数量和导致形成原电池因素的不同处理的材料的数量。
因而，根据本发明，可以减少用于接触区域的昂贵材料的量并且可以保持低的生产成本并且可以确保SCA优异的可靠性和长的使用寿命。
本发明方法的以上示例还可以包括在所述接合衬垫的至少一部分上形成接触表面（例如矩形形状）并且将所述太阳能电池附接到所述接触表面。所述太阳能电池可以通过导热和/或导电粘接剂或者焊料接触到接触表面。接触表面可以包括由贵金属（例如，金、银）或者非贵金属（例如，铜、锡、镍或者镍磷）的镀层或者由贵金属（例如，金、银）或者非贵金属（例如，铜、锡、镍或者镍磷）的镀层组成。具体地，贵金属（例如，金、银）或者非贵金属（例如，铜、锡、镍或者镍磷）的电镀层可以被提供作为接触表面。
在上述实施方式中描述的接合衬垫可以以包括以下的几何形状（从俯视图）设置：包括四边形和八边形的重叠，以使得八边形的大小相同并且比八边形的其它六个边（可以是相同大小）的每一个更长的两个平行边中的一个与四边形的比该四边形的其它两个等尺寸平行边更长的两个等尺寸平行边中的一个重叠。四边形的相同大小的平行边的另一个不位于八边形的形状内。
根据另选实施方式，在上述实施方式中描述的接合衬垫可以按照以下几何形状（从俯视图）设置，该几何形状包括：
两个梯形（可以是等腰梯形）和四边形的重叠，其中，上部（等腰）梯形的边中的垂直于上部（等腰）梯形的对称轴的较长的一个边与四边形的比该边（上部（等腰）梯形的边中的垂直于上部（等腰）梯形的对称轴的较长的一个边）更大的上部边重叠，并且下部（等腰）梯形的边中的垂直于下部（等腰）梯形的对称轴的较长的一个边与四边形的比该边（下部（等腰）梯形的边中的垂直于下部等腰梯形的对称轴的较长的一个边）更大的下部边重叠。两个（等腰）梯形重叠在四边形上从而与重叠在四边形的各个边上的边平行的较小的边不位于四边形的形状内。
在另选实施方式中，接合衬垫具有六边形或者矩形形状。
在全部另选实施方式中，接合衬垫被一体地形成在这些几何形状的单片上。形状的具体示例在图3a和图3b以及图6a和图6b中例示。
还提供一种太阳能电池组件，所述太阳能电池组件包括：
附接到接合衬垫的太阳能电池；
冷却基板；
其中，所述接合衬垫通过导热粘接剂单元附接到冷却基板的表面。接合衬垫还可以通过接合导线与所述冷却基板电接触。
根据另选实施方式，提供一种太阳能电池组件，所述太阳能电池组件包括：
附接到接合衬垫的太阳能电池；
冷却基板；
其中，所述接合衬垫通过导热和导电粘接剂单元附接到冷却基板的表面。
在此另选实施方式中，接合衬垫还可以通过接合导线电接触到所述冷却基板。
在本发明的太阳能电池的上述示例中，可以按照以下的几何形状（俯视图）提供接合衬垫，该几何形状包括：
四边形和八边形的重叠，以使得八边形的大小相同并且比八边形的其它六个边的每一个更长的两个平行边中的一个与四边形的比该四边形的其它两个等尺寸平行边更长的两个等尺寸平行边中的一个重叠，该四边形具体为矩形；
或者，两个（等腰）梯形和一个四边形的重叠，其中，其中上部（等腰）梯形的边中的垂直于上部（等腰）梯形的对称轴的较长的一个边与四边形的比该边更大的上部边重叠，并且下部（等腰）梯形的边中的垂直于下部（等腰）梯形的对称轴的较长的一个边与四边形的比该边更大的下部边重叠。
此外，四边形的相同大小的平行边的另一个不位于八边形的形状内，并且两个（等腰）梯形重叠在四边形上从而与重叠在四边形的各个边上的边平行的较小的边不位于四边形的形状内。
太阳能电池组件还可以包括通过导线连接到太阳能电池的表面并且定位在接合衬垫或者冷却基板的区域上的电气器件，例如，旁路二极管或者具有对冷却基板绝缘的传导表面的任何装置。
本发明还提供一种用于接合太阳能电池并且适用于与冷却基板连接的接合衬垫，其中，所述接合衬垫示出以下几何形状（俯视图）：
四边形和八边形的重叠，以使得八边形的大小相同并且比八边形的其它六个边的每一个更长的两个平行边中的一个与四边形的比该四边形的其它两个等尺寸平行边更长的两个等尺寸平行边中的一个重叠，该四边形具体为矩形；
或者，两个（等腰）梯形和一个四边形的重叠，其中，其中上部（等腰）梯形的边中的垂直于上部（等腰）梯形的对称轴的较长的一个边与四边形的比该边更大的上部边重叠，并且下部（等腰）梯形的边中的垂直于下部（等腰）梯形的对称轴的较长的一个边与四边形的比该边更大的下部边重叠；
此外，梯形的相同大小的平行边的另一个不位于八边形的形状内，以及两个（等腰）梯形重叠在四边形上从而与重叠在四边形的各个边上的边平行的较小的边不位于四边形的形状内。
另选地，接合衬垫可以示出六边形或者矩形的几何形状。
接合衬垫可以还包括接触表面，用于接触要被附接到接合衬垫的太阳能电池的背面，其中，接触表面具体地由贵金属（例如，金、银）或者非贵金属（例如，铜、锡、镍或者镍磷）的镀层组成。具体地，贵金属（例如，金、银）或者非贵金属（例如，铜、锡、镍或者镍磷）的电镀层可以被提供作为接触表面。
另外，提供一种包括多个上述接合衬垫的引线框，其中接合衬垫在一个平面内密集填塞。具体地，引线框可以包括如图5例示的接合衬垫排列。这种引线框允许通过标准半导体技术的非常有效的处理。
在全部示例性方法和装置中，接合衬垫和/或冷却基板可以包括铝合金或者由例如99.5%的铝合金组成。具体地，当在以上示例中使用99.5%的铝合金的冷却基板和99.5%铝合金的接合衬垫并且包括具有最上层银层的接触表面（用于接触太阳能电池的背面），结合用包括氧化铝的环氧树脂胶水将接合衬垫附接到冷却基板并且用铝导线将接合衬垫与冷却基板电接触时，能够得到一种特别成本高效的构造。
在下文将参照附图描述本发明的附加特征和优点。在说明中，参照了附图，附图旨在例示本发明的优选实施方式。应理解这种实施方式不代表本发明的完整范围。
图1a和图1b例示了根据本发明的包括冷却基板、接合衬垫、太阳能电池和与太阳能电池接触的电气装置的SCA的示例。
图2a和图2b例示了根据本发明的包括冷却基板、接合衬垫、太阳能电池和与太阳能电池接触的电气装置的SCA的另一个示例。
图3a和图3b例示了根据本发明的示例的接合衬垫的示例性几何形状。
图4例示了单独根据本发明的示例形成的SCA的厚导线布线。
图5例示了包括根据本发明的示例的接合衬垫的引线框。
图6a和图6b例示了排列在根据本发明的示例的引线框中的接合衬垫的其他示例性几何形状。
在图1a（俯视图）和图1b（侧视图）中例示了根据本发明制造的SCA构造。根据所示的示例，SCA包括：太阳能电池1、接合衬垫2、通过接合导线4与太阳能电池1的上表面电接触的单独的电子器件（例如，旁路二极管或者具有对冷却基板绝缘的传导表面的任何器件），以及冷却基板5。应注意的是可以设置衬垫例如铝衬垫代替电子器件3。优选地，接合衬垫2和冷却基板5由相同材料制成。根据示例，该材料是铝合金，具体地是99.5%的铝合金。通过选择相同材料，大致避免了接合衬垫2和冷却基板5之间的热应力和原电池因素（galvanicelement）。
原理上，冷却基板5由平坦材料组成，并且应提供热冷却并且还可以用作电导体。可以根据期望的冷却性能来选择平坦金属的尺寸，更具体地说，可以根据期望的冷却性能来选择平坦金属的厚度（例如接合衬垫2的厚度）。为冷却基板5选择99.5%的铝合金允许可靠地接触到薄导线、或者厚导线或者带式接合连接，以及连接到集中器太阳能光伏应用的由铝制成的次光学装置。
接合衬垫2包括完全地或者部分地覆盖接合衬垫2的接触表面6。接触表面6由适用于接触太阳能电池1的背面的材料组成。例如，接触表面6可以由贵金属（例如，金、银）或者非贵金属（例如，铜、锡、镍或者镍磷）的镀层组成。具体地，贵金属（例如，金、银）或者非贵金属（例如，铜、锡、镍或者镍磷）的电镀层可以被提供作为接触表面6。具体地说，接触表面可以以矩形形状提供。另选地，太阳能电池可以直接连接到铝接合衬垫2。此外，通过接合导线7提供接合衬垫和所述冷却基板之间的电接触。
通过导热粘接剂单元9（参见图1b）将所述接合衬垫2附接到冷却基板5。粘接剂单元9例如可以是导热胶水、焊料或者粘接带或者箔。导热粘接剂单元9还可以提供导电性。然而，为了节省制造成本，可以提供非导电粘接剂单元9，例如，由包含氧化铝的环氧树脂制成的胶水或者粘接带。在此情况下，如图1a和图1b例示的，可以通过接合导线7（具体地通过铝导线）提供电连接。
接合衬垫2显示促进热冷却的几何形状并且可以包括适用于将例如旁路二极管或者电隔离的接触衬垫这样的装置3定位以与太阳能电池1的上表面通过接合导线4电接触的部分。在所示的示例中（参见图1a），接合衬垫2具有八边形被四边形重叠的形状，从而八边形的大小相同并且比八边形的其它六个边的每一个更长的两个平行边中的一个与四边形的比该四边形其它两个平行边更长的两个相同个大小的平行边中的一个重叠。
可以通过焊料8或者导热和/或导电粘接剂8实现太阳能电池1与接合衬垫2的接触，如图1b所示。根据本示例，装置3通过焊料8或者传导粘接剂8类似地接触到接合衬垫2。针对接触表面6的最上层包含银的情况，粘接剂8的优选示例是银胶水。
根据具体实施方式，接合衬垫2和冷却基板中的至少一个由99.5%铝合金组成，并且接合衬垫2包括电流层或者镀敷了在顶部露出的银表面。在银表面上形成了用于与太阳能电池1的背面的电连接和热连接的传导银粘接剂。相同或者不同的传导银粘接剂用于接合衬垫2和装置3的电连接和热连接。
图2a和图2b例示根据本发明的包括冷却基板、接合衬垫、太阳能电池和与太阳能电池接触的电气装置的SCA的另一个实施方式。与图1a和图1b所示的示例相比，接合衬垫2具有不同的形状，并且不包括用于通过导线4连接到太阳能电池1的上表面的装置3的定位的部分。图2a所示的接合衬垫以具有十二个角和边的多边形形式成型。具体地，通过重叠两个（等腰）梯形和一个四边形给出接合衬垫2的形状。上部（等腰）梯形的边中的垂直于上部（等腰）梯形的对称轴的较长的一个边与四边形的比该边更大的上部边重叠。类似地，下部（等腰）梯形的边中的垂直于下部（等腰）梯形的对称轴的较长的一个边与四边形的比该边更大的下部边重叠（该下部边平行于该四边形的上部边）（参见图2a）。
如参照图1a和图1b描述的示例，接合衬垫2包括部分地覆盖接合衬垫2的接触表面6。接触表面6以矩形成型，并且由适用于接触太阳能电池1的背面的材料组成，例如金、银、铜、锡、镍或者镍磷。太阳能电池1经由焊料8或者热和/或电传导粘接剂7与接合衬垫2接触。装置3与接合衬垫2隔开地定位，并且经由与用于使太阳能电池1与接合衬垫2（图2b）的接触的材料相同或者不同的材料的另一个焊料8或者热和/或电传导粘接剂8与冷却基板5接触。
根据图1a和图1b或者图2a和图2b的示例的单独的SCA可以被如图4所示地布线。厚导线9（例如，铝导线）连接到SCA的焊接衬垫2。由铝制成的次光学装置或者其底座通过激光焊接等可以容易地连接到冷却基板5。
例如可以按照以下实现接合衬垫的制造。提供铝（或者不同金属）的矩形片材。在该铝矩形片材上形成贵金属或者非贵金属带以形成未来的接触表面。接着通过冲压形成接合衬垫以形成图5所示的所谓的引线框10。衬垫的位置和形状设计成可以在单个铝矩形片材上排列非常高密度的接合衬垫，从而单个冲压步骤对于形成衬垫是充分的。另外，接合衬垫被设计被定位成使涂覆在铝片材表面上的连续的贵金属或者非贵金属带在冲压之后被适当地定位在衬垫上，用于容纳太阳能电池以及可能的二极管。
接合衬垫、冷却基板和太阳能电池的组装可以包括以下步骤。太阳能电池以及可能的二极管被连续地组装在作为引线框的一部分的接合衬垫上。接着引线框的每个接合衬垫被“拆卸”并且联合/附接到冷却基板。这对于可制造性是非常优选的，因为小的元件（二极管、太阳能电池）被拾取并且放置在引线框上。此过程可以被目前设备按照自动工业方式进行。然而，应注意不在对接合衬垫与冷却基板进行组装时使这些电子部件退化。在此过程中，需要拾取并且放置之上安装了它们的电子部件的接合衬垫。因此，接合衬垫应呈现通常不涂覆贵金属或者非贵金属的一些“把持区域”。把持区域将允许“拾取和放置”工具操纵接合衬垫。
通过图3a的e和g和f和g指示的边限定的区域以及通过图3b的梯形区域，限定了把持区域。另外，因为在器件（太阳能电池、二极管）和在与冷却基板的组装步骤期间可能呈现高温度的接合衬垫的轮廓之间设置一定距离，因此把持区域是有用的。
在本发明中，同样如在图3a和图3b所例示的，提供特定几何形状的接合衬垫2。本发明提供的接合衬垫2特别适用于通过半导体技术的大规模生产和处理。在图5中，例示了包括多个接合衬垫2的引线框。接合衬垫密集且平坦地填塞在可以在生产线上生产的金属带10上。在所示的示例中，参照图1a和图1b描述并且如图3a所示的多个接合衬垫2形成引线框。图5的最上端和最下端接合衬垫2和最左端和最右端接合衬垫2可以被指定为接合衬垫的边界。与其它接合衬垫完全邻接的全部接合衬垫被指定为内部接合衬垫。
内部接合衬垫排列成对于这些接合衬垫I的每个满足以下情况：
A）接合衬垫I的矩形的长边（图3a中用a指示）（与同一接合衬垫的八边形的长边平行）定位为与第一其它接合衬垫II的八边形的长边相邻，并且同一接合衬垫I的八边形的长边（图3a中用b指示）定位为与第二其它接合衬垫III的矩形的长边相邻。
B）接合衬垫I的矩形的第一短边（比长边更短并且在图3a中用c指示）定位为与第三个其它接合衬垫IV的八边形的第一短边相邻，并且平行于接合衬垫I的矩形的第一短边的第二短边（在图3a中用d指示）被定位为与第四其它接合衬垫V的八边形的第一短边相邻。
C）接合衬垫I的八边形的第一短边（比长边更短并且在图3a中用e指示）定位为与第五其它接合衬垫VI的矩形的第一短边相邻，并且接合衬垫I的八边形的第二短边（与第一平行并且在图3a中用f指示）定位为与第六其它接合衬垫VII的矩形的第一短边相邻。
D）接合衬垫I的八边形的对角边（在图3a中用g指示）与如图5所示的第三到第六八边形IV到VII的各个对角边相邻。
按照类似方式，参照图2a和图2b描述以及如图3b所示的接合衬垫可以以密集排列方式来排列。在具体排列方式中，图3b中例示的一个接合衬垫2的对角边定位为在包括图3b所示的接合衬垫2的引线框中与相同形状的其它接合衬垫2的对角边相邻。
尽管以上描述接合衬垫2的特定几何形状和其在引线框中的对应的排布，但是本发明的接合衬垫2不局限于以上描述。
图6a和图6b中例示了本发明的接合衬垫2的进一步另选适当形状以及它们在引线框中的排列。与以上描述的接合衬垫的几何形状相比，图6a（六边形）和图6b（两个矩形）中所示的接合衬垫的形状更简单。没有限定具体的把持区域。在此情况下，接合衬垫的尺寸可以减小并且接合衬垫的制造更廉价。这种接合衬垫对于随后的接合衬垫、冷却基板和太阳能电池的组装过程特别有用。在第一步骤，接合衬垫被组装在冷却基板上。在第二步骤，太阳能电池以及可能的二极管连接到接合衬垫上。然而，因为装置要被定位在很大的基板上（冷却基板和接合衬垫），因此与以上描述的组装方法相比，制造（在自动化方面）较不容易。
全部先前讨论的实施方式不旨在限制本发明，而是作为例示本发明的特征和优点的示例。应理解的是以上描述的特征中的一些或者全部还可以按照不同方式组合。

Claims (13)

1.一种太阳能电池组件的制造方法，所述方法包括以下步骤：
设置太阳能电池(1)和用于接合所述太阳能电池(1)的单独的接合衬垫(2)；
设置冷却基板(5)；以及
将所述太阳能电池(1)的整个背面附接到所述接合衬垫(2)的正面，并且将所述接合衬垫(2)的背面附接到所述冷却基板(5)的正面，使得所述接合衬垫(2)与所述冷却基板(5)电连接，
所述方法还包括：通过接合导线(7)将所述接合衬垫(2)与所述冷却基板(5)电接触。
2.根据权利要求1所述的方法，所述方法还包括：通过导热粘接剂单元(9)将所述接合衬垫(2)附接到所述冷却基板(5)的表面，所述导热粘接剂单元(9)具体为由包含氧化铝的环氧树脂制成的胶水或者粘接带。
3.根据权利要求1所述的方法，其中，通过导热和导电粘接剂单元(9)将所述接合衬垫(2)附接到所述冷却基板(5)的表面。
4.根据前述权利要求中的任意一项所述的方法，所述方法还包括：在所述接合衬垫(2)的至少一部分上形成接触表面(6)并且将所述太阳能电池(1)附接到所述接触表面(6)。
5.根据权利要求4所述的方法，其中，通过导热和/或导电粘接剂(8)或者焊料(8)将所述太阳能电池(1)接触到所述接触表面，所述导热和/或导电粘接剂(8)或者焊料(8)具体为银胶水。
6.根据权利要求1-3、5中的任意一项所述的方法，其中，
所述接合衬垫(2)按照以下几何形状设置，该几何形状包括：
一个四边形和一个八边形的重叠，以使得所述八边形的大小相同并且比该八边形的其它六个边的每一个更长的两个平行边中的一个与四边形的比该四边形的其它两个等尺寸平行边更长的两个等尺寸平行边中的一个重叠，所述四边形具体地为矩形；或者，
两个梯形和一个四边形的重叠，其中上部梯形的边中的垂直于所述上部梯形的对称轴的较长的一个边与四边形的比该边更大的上部边重叠，并且下部梯形的边中的垂直于所述下部梯形的对称轴的较长的一个边与四边形的比该边更大的下部边重叠，所述梯形具体地为等腰梯形；
或者，所述接合衬垫以六边形或者矩形给出的几何形状设置。
7.一种太阳能电池组件，所述太阳能电池组件包括：
附接到单独的接合衬垫(2)的太阳能电池(1)；
冷却基板(5)；
其中，所述太阳能电池(1)的整个背面附接到所述接合衬垫(2)的正面，所述接合衬垫(2)的背面附接到所述冷却基板(5)的正面，使得所述接合衬垫(2)与所述冷却基板(5)电连接，
其中，通过接合导线(7)将所述接合衬垫(2)与所述冷却基板(5)电接触。
8.根据权利要求7所述的太阳能电池组件，其中，通过导热粘接剂单元(9)将所述接合衬垫(2)附接到所述冷却基板(5)的表面。
9.根据权利要求7所述的太阳能电池组件，其中，通过导热和导电粘接剂单元(9)将所述接合衬垫(2)附接到所述冷却基板(5)的表面。
10.根据权利要求7到8中任意一项所述的太阳能电池组件，其中，
所述接合衬垫(2)按照以下几何形状设置，该几何形状包括：
一个四边形和一个八边形的重叠，以使得所述八边形的大小相同并且比八边形的其它六个边的每一个更长的两个平行边中的一个与四边形的比该四边形的其它两个等尺寸平行边更长的两个等尺寸平行边中的一个重叠，所述四边形具体地为矩形；或者，
两个等腰梯形和一个四边形的重叠，其中上部等腰梯形的边中的垂直于该上部等腰梯形的对称轴的较长的一个边与四边形的比该边更大的上部边重叠，并且下部等腰梯形的边中的垂直于该下部等腰梯形的对称轴的较长的一个边与四边形的比该边更大的下部边重叠；
或者，所述接合衬垫按照由六边形或者矩形给出的几何形状设置。
11.一种用于接合太阳能电池(1)并且适用于与冷却基板(5)连接的接合衬垫(2)，其中，所述接合衬垫(2)示出以下几何形状：
一个四边形和一个八边形的重叠，以使得所述八边形的大小相同并且比该八边形的其它六个边的每一个更长的两个平行边中的一个与四边形的比该四边形的其它两个等尺寸平行边更长的两个等尺寸平行边中的一个重叠，所述四边形具体地为矩形；或者，
两个等腰梯形和一个四边形的重叠，其中上部等腰梯形的边中的垂直于该上部等腰梯形的对称轴的较长的一个边与四边形的比该边更大的上部边重叠，并且下部等腰梯形的边中的垂直于该下部等腰梯形的对称轴的较长的一个边与四边形的比该边更大的下部边重叠；或者
六边形或矩形，
其中所述太阳能电池(1)的整个背面附接到所述接合衬垫(2)的正面，所述接合衬垫(2)的背面附接到所述冷却基板(5)的正面，使得所述接合衬垫(2)与所述冷却基板(5)电连接，
其中，通过接合导线(7)将所述接合衬垫(2)与所述冷却基板(5)电接触。
12.根据权利要求11所述的接合衬垫(2)，所述接合衬垫(2)还包括：接触表面(6)，所述接触表面用于接触要被附接到接合衬垫(2)的太阳能电池(1)的背面，其中所述接触表面(6)具体地由贵金属或者非贵金属的镀层组成，所述贵金属具体为金或者银，所述非贵金属具体为铜、锡、镍、或镍磷，并且所述镀层具体为贵金属或者非贵金属的电镀层。
13.一种包括多个根据权利要求11或者12所述的接合衬垫(2)的引线框，其中，所述接合衬垫(2)密集填塞在一个平面中。
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