CN108231927B - 太阳能电池组件以及导电体 - Google Patents

太阳能电池组件以及导电体 Download PDF

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CN108231927B
CN108231927B CN201711293245.8A CN201711293245A CN108231927B CN 108231927 B CN108231927 B CN 108231927B CN 201711293245 A CN201711293245 A CN 201711293245A CN 108231927 B CN108231927 B CN 108231927B
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solar cell
conductor
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cell module
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CN108231927A (zh
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稻叶博隆
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Toyota Industries Corp
Toyota Motor Corp
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Abstract

本发明的太阳能电池组件具备：至少一个太阳能电池单元，其配置于第一罩以及第二罩之间；密封件，其填埋于第一罩以及第二罩之间而使它们相互接合，并密封太阳能电池单元；以及作为导电体的接头线，其与太阳能电池单元电连接，并在第一罩与第二罩之间被密封件包围，接头线具有：多个台座；以及连接多个台座的能够沿长边方向伸缩的伸缩部，在多个台座设置有贯通孔和连接座，该连接座与太阳能电池单元电连接，第一罩以及第二罩的至少一方具有使接头线定位的作为定位部的凸台。

Description

太阳能电池组件以及导电体
技术领域
本发明涉及太阳能电池组件以及导电体，更特定来说，涉及搭载于车辆的太阳能电池组件以及用于该太阳能电池组件的导电体。
背景技术
日本特开2015-223065号公报公开有如下结构，即：邻接的太阳能电池单元串(cell string)彼此使用母线部件而分别以串联的方式配线电连接的结构。
在以往的技术中，在表面板、背面板使用了树脂的情况下，由于积层时的热伸缩，太阳能电池单元移动而产生位置偏移。
另外，在表面板、背面板使用了树脂的情况下，存在由于积层时以及使用时的热伸缩而使导电体产生折皱的问题。
发明内容
因此，本发明是为了解决上述的问题点而完成的，目的在于提供能够抑制太阳能电池单元的移动、并且导电体未产生折皱的太阳能电池组件以及用于该太阳能电池组件的导电体。
本发明所涉及的太阳能电池组件具备：第一罩，其为板状，且至少一部分具有透明性；第二罩，其与第一罩对置配置；至少一个太阳能电池单元，其配置于第一罩以及第二罩之间；密封件，其填埋于第一罩以及第二罩之间而使它们相互接合，对太阳能电池单元进行密封；以及导电体，其与太阳能电池单元电连接，在第一罩与第二罩之间被密封件包围，导电体具有：多个台座，以及与多个台座连接的能够沿长边方向伸缩的配线，在多个台座设置有贯通孔和连接座，连接座与太阳能电池单元电连接，第一罩以及第二罩的至少一方具有插入多个台座的贯通孔而使导电体定位的定位部。
对于这样构成的太阳能电池组件，第一罩以及第二罩的至少一方具有使导电体定位的定位部，因此能够使导电体可靠地进行定位。并且，导电体与太阳能电池单元电连接，因此能够抑制太阳能电池单元的移动。在多个台座之间设置有能够沿长边方向伸缩的配线，因此在太阳能电池组件的制造工序中，即使第一罩以及第二罩伸缩，导电体也不会折弯。其结果是，能够抑制导电体产生折皱。而且，在台座设置有连接座，因此能够利用连接座来连接与太阳能电池单元连接的内连接器等导体。
优选多个太阳能电池单元通过导电体而构成连接为一列的太阳能电池串，定位部使与太阳能电池串的两端部连接的导电体进行定位。该情况下，将太阳能电池串的外侧端部的位置定位，能够可靠地防止以第一罩以及第二罩的收缩、膨胀为起因的太阳能电池的位置偏移。
优选第一罩具备从外部对第一罩内部进行遮挡的有色部，定位部配置于有色部与第二罩之间。该情况下，无法从外部确认定位部，因此能够保持太阳能电池组件的外观良好。
优选定位部一体地设置于有色部。该情况下，定位部容易制造。
本发明所涉及的导电体具备：多个台座；以及配线，其连接多个台座，并能够沿长边方向伸缩，在多个台座设置有贯通孔和与其他的导体连接的连接座。
对于这样构成的导电体，在多个台座之间设置有能够沿长边方向伸缩的配线，因此即使在太阳能电池组件的制造工序中伸缩，导电体也不会折弯。其结果是，能够抑制折皱的产生。而且，在台座设置有连接座，因此能够利用连接座来连接与太阳能电池单元连接的内连接器等导体。由此能够抑制太阳能电池单元的位置偏离。
优选导电体包括接头线以及串间连接器这两者中的任一个。
根据上述的结构，能够使用定位部来可靠地对导电体进行定位。
该发明的上述以及其他的目的、特征、形式以及优点可以从以下与结合附图而理解的该发明所相关的详细说明中看出。
附图说明
图1是表示本发明的实施方式1的车辆的外观的立体图。
图2是表示本发明的实施方式1的车辆所具备的太阳能电池组件的外观的俯视图，且是从图1的箭头II方向观察的图。
图3是在图2中的太阳能电池组件中将第一罩卸下并将内部构造放大示出的俯视图。
图4是为了说明定位构造而示出的俯视图。
图5是沿着图4中的V-V线的剖视图。
图6是详细地示出接头线的俯视图。
图7是详细地示出串间连接器的俯视图。
图8是本发明的实施方式2所涉及的接头线的俯视图。
具体实施方式
以下，参照附图对本发明的各实施方式的太阳能电池组件、其安装构造以及包括该太阳能电池组件的车辆进行说明。在以下的说明中，对图中的相同或者相当部分标注相同附图标记，不重复其说明。
(实施方式1)
图1是表示本发明的实施方式1的车辆的外观的立体图。图2是表示本发明的实施方式1的车辆所具备的太阳能电池组件的外观的俯视图，且是从图1的箭头II方向观察的图。图3是在图2中的太阳能电池组件中卸下第一罩而将内部构造放大示出的俯视图。此外，为了简化，仅记载太阳能电池组件的一部分的太阳能电池单元。图4是为了说明定位构造而示出的俯视图。图5是沿着图4中的V-V线的剖视图。
如图1～图5所示，本发明的实施方式1的车辆100是汽车，其具备：构成车顶的太阳能电池组件110；以及作为车身的一部分的车顶侧部件120。此外，车辆不局限于汽车，例如也可以是电车。
太阳能电池组件110具备：作为表面板的板状的第一罩111；与第一罩111对置配置的作为背面板的第二罩112；配置于第一罩111以及第二罩112之间的太阳能电池单元113；以及埋于第一罩111以及第二罩112之间而使它们相互接合来密封太阳能电池单元113的密封件114。
第一罩111具有俯视时大致矩形状的外形。第一罩111在本实施方式中为平板，但也可以弯曲。在本实施方式中，第一罩111是聚碳酸酯制的板。但是，第一罩111不局限于此，也可以是丙烯酸等其他的树脂制的板。第一罩111通过对聚碳酸酯进行射出成型或挤压成型来形成。
第一罩111中的与太阳能电池单元113对置的部分为透明。太阳光透过透明部分，从而太阳光照射至太阳能电池单元113。第一罩111中的不与太阳能电池单元113对置的部分也可以通过设置有色部121而成为不透明。通过成为不透明，从而第一罩111内部被遮挡，能够隐藏太阳能电池单元113的周围的配线及粘合剂。有色部121遮挡可见光线。有色部121为不透明即可，不仅可以如红、黄、绿、蓝、紫那样为彩色，也可以为白、灰色或者黑等无色彩。
第二罩112具有俯视时大致矩形状的外形。第二罩112在本实施方式中为平板状，但在第一罩111弯曲的情况下，以与第一罩111大致相同的曲率弯曲。
在本实施方式中，第二罩112是聚碳酸酯制的板。但是，第二罩112并不局限于此，可以是丙烯酸等其他的树脂制的板，可以是CFRP(carbon-fiber-reinforced plastic：碳纤维复合塑料)制的板或者铝等金属制的板，也可以是聚对苯二甲酸乙二酯等树脂制的片材。
第二罩112通过对聚碳酸酯进行射出成型而形成。
另外，第二罩112可以是透明也可以是不透明。
太阳能电池单元113以矩阵状彼此隔开间隔而配置有多个。多个太阳能电池单元113彼此电连接。具体而言，配置为一列的多个太阳能电池单元113彼此串联连接而构成太阳能电池串110a。多个太阳能电池串110a彼此串联连接。
密封件114位于由第一罩111与第二罩112所夹持的区域。密封件114与第一罩111、第二罩112以及太阳能电池单元113接触。
在本实施方式中，密封件114由EVA(Ethylene-Vinyl Acetate：乙烯-乙酸乙烯酯)构成。但是，构成密封件114的材料不局限于EVA，也可以是PVB(Poly Vinyl Butyral：聚乙烯醇缩丁醛)、硅酮树脂或者离聚物树脂等。
在多个太阳能电池单元113之间设置有内连接器211、212、213。内连接器211、212、213具有：一对脚部211a、212a、213a；以及设置于一对脚部211a、212a、213a之间的挠性部211b、212b、213b。
一对脚部211a、212a、213a与挠性部211b、212b、213b连接。
接头线220、230具有：多个台座221、231；以及连接多个台座的伸缩部222、232。
一方的脚部211a与台座221连接。另一方的脚部211a与太阳能电池单元113连接。一方的脚部212a以及另一方的脚部212a与太阳能电池单元113连接。一方的脚部213a与太阳能电池单元113连接。另一方的脚部213a与台座231连接。
在台座221、231设置有贯通孔221a、231a；以及与贯通孔邻接的连接座221b、231b。
在第二罩112上配置有多个接头线220以及连接多个接头线220的串间连接器320。接头线220通过焊接或者熔接而与脚部211a连接。
在第二罩112上配置有多个接头线230以及连接多个接头线230的串间连接器330。接头线230通过焊接或者熔接而与脚部213a连接。
挠性部211b、212b、213b是容易变形的形状。若一对脚部211a间的距离变化则挠性部211b变形。若一对脚部212a间的距离变化则挠性部212b变形。若一对脚部213a间的距离变化则挠性部213b变形。
图3的双点划线190示出有色部与透明部的分界线。太阳能电池单元113位于双点划线190的内侧。太阳能电池单元113位于第一罩111的透明部的下方。接头线220、230位于第一罩111的有色部的下方。
如图5所示那样，在第一罩111与第二罩112之间设置有密封件114、太阳能电池单元113、以及构成第一罩111的一部分的有色部121。
有色部121以包围周围的框状通过双色成形一体地成形于第一罩111的第二罩侧的面。在有色部121设置有凸台121a。凸台121a插入贯通孔221a、231a。凸台121a与第二罩112接触。有色部121不局限于设置在第一罩111的周围，只要是不与太阳能电池单元113对置的部分，均能够设置。
在该实施方式中，凸台121a设置于构成第一罩111的一部分的有色部121，但凸台121a也可以设置于第二罩112。另外，凸台121a也可以与第一罩111以及第二罩112分体设置。
实施方式1所涉及的太阳能电池组件110具备：至少一部分具有透明性的板状的第一罩111；与第一罩111对置配置的第二罩112；配置于第一罩111以及第二罩112之间的至少一个太阳能电池单元113；填埋于第一罩111以及第二罩112之间而使第一罩111与第二罩112相互接合并密封太阳能电池单元113的密封件114；以及与太阳能电池单元113电连接并在第一罩111与第二罩112之间被密封件114包围的作为导电体的台座221、231，第一罩111具有使台座221、231定位的作为定位部的凸台121a。
对于太阳能电池单元113而言，多个太阳能电池单元113通过内连接器212而构成彼此连接为一列的太阳能电池串110a，凸台121a使经由内连接器211、213而连接于太阳能电池串110a的两端部的台座221、231定位。此外，凸台121a也可以使作为导电体的接头线220、230或者内连接器211、213定位。
第一罩111具备从外部对第一罩内部进行遮挡的有色部121，凸台121a配置于有色部121的内侧。另外，凸台121a一体设置于有色部121。凸台121a配置于有色部121与第二罩112之间。
图6是详细地示出接头线的俯视图。如图6所示那样，接头线230具有三个台座231和连接这三个台座231的两个伸缩部232。台座231由金属板构成。在台座231的中央部分设置有贯通孔231a。在台座231的端部设置有用于与内连接器连接的连接座231b。贯通孔231a可以是圆形，也可以是方形。并且，贯通孔231a也可以是长孔。
伸缩部232由三根波形配线232a构成。此外，伸缩部不局限于波形配线232a，还可以是网格形状的配线、三维的波形的配线、线圈形状的配线等，只要是能够沿长边方向伸缩的形状即可。
在接头线230的中心线230a设置有贯通孔231a。而且接头线230的中心线230a是波形配线232a的振幅的中心。在中心线230a上设置有贯通孔231a，因此即使在贯通孔231a作用有使接头线230伸缩的力，接头线230整体也会均匀地伸缩。
图7是详细地示出串间连接器的俯视图。如图7所示那样，作为导电体的串间连接器330具有两个台座331和连接这两个台座331的一个伸缩部332。台座331由金属板构成。在台座331的中央部分设置有贯通孔331a。在台座331的端部设置有用于与接头线连接的连接座331b。贯通孔331a可以是圆形，也可以是方形。并且，贯通孔331a也可以是长孔。
伸缩部332由三根波形配线332a构成。此外，伸缩部不局限于波形配线332a，也可以是网格形状的配线、三维的波形的配线、线圈形状的配线等，只要是能够沿长边方向伸缩的形状即可。
在串间连接器330的中心线330a设置有贯通孔331a以及连接座331b。而且串间连接器330的中心线330a是波形配线332a的振幅的中心。在中心线330a上设置有贯通孔331a以及连接座331b，因此即使在贯通孔331a以及连接座331b作用有使串间连接器330伸缩的力，串间连接器330整体也会均匀地伸缩。
通过向贯通孔331a插入凸台，从而利用贯通孔331a将串间连接器330定位。
作为导电体的接头线220、230以及串间连接器320、330与太阳能电池单元113电连接，且在第一罩111与第二罩112之间被密封件114包围。接头线220、230以及串间连接器330具有：多个台座221、231、331；以及连接多个台座221、231、331的能够沿长边方向伸缩的波形配线222a、232a、332a，在多个台座221、231、331设置有：贯通孔221a、231a、331a；以及与太阳能电池单元113电连接的连接座221b、231b、331b。第一罩111以及第二罩112的至少一方具有：插入多个台座221、231、331的贯通孔221a、231a、331a而使接头线220、230以及串间连接器330定位的作为定位部的凸台121a。
对于太阳能电池组件而言，即使在第一罩111以及第二罩112使用了树脂的情况下而产生积层时的热伸缩，由于利用凸台121a而机械地完成对接头线220、230以及串间连接器320、330的定位，因此不会产生位置偏移。
即使在第一罩111以及第二罩112使用树脂的情况下，接头线220、230以及串间连接器320、330也追随积层时以及使用时的热伸缩而进行伸缩，因此接头线220、230以及串间连接器320、330不会产生折皱、折断。
由于设定焊接的连接座221b、231b，所以能够使与内连接器的焊接连接变得容易。此外，连接座221b、231b的连接不仅可以是焊接、熔接，也可以是使用导电性粘合剂的连接。
(实施方式2)
图8是本发明的实施方式2所涉及的接头线的俯视图。对于根据实施方式2的接头线230而言，在两个台座231之间设置有其他的台座233，在台座233未设置有贯通孔，而仅设置有连接座。而且连接台座231、233的伸缩部232由四根波形配线232a构成。串间连接器320、330也可以同样地构成。
根据周边条件的关系能够变形为重视伸缩的形状、重视定位的形状等各种变形。例如若成为重视伸缩的形状，则通过使波形配线232a的波长较短或使波高(振幅)较大，从而使波形配线232a容易伸缩。若为重视定位的形状，则较多地设置定位用的贯通孔231a并在各个贯通孔231a插入凸台则容易进行定位。
对本发明的实施方式进行了说明，但这次公开的实施方式所有方面均为例示，并没有限定作用。本发明的范围通过权利要求的范围示出，意在包含与权利要求的范围均等的内容以及范围内的全部的变更。

Claims (3)

1.一种太阳能电池组件，其特征在于，具备：
第一罩，其为板状，且至少一部分具有透明性；
第二罩，其与所述第一罩对置配置；
至少一个太阳能电池单元，其配置于所述第一罩以及所述第二罩之间；
密封件，其填埋于所述第一罩以及所述第二罩之间，将所述第一罩与所述第二罩相互接合，并密封所述太阳能电池单元；以及
导电体，其与所述太阳能电池单元电连接，在所述第一罩与所述第二罩之间被所述密封件包围，
所述导电体具有：多个台座；以及连接所述多个台座的能够沿长边方向伸缩的配线，在所述多个台座设置有贯通孔和连接座，该连接座与所述太阳能电池单元电连接，
所述第一罩以及所述第二罩的至少一方具有定位部，该定位部插入所述多个台座的贯通孔而将所述导电体定位，
多个所述太阳能电池单元构成连接为一列的太阳能电池串，所述多个台座连接于所述太阳能电池串的两端部，所述定位部将与所述太阳能电池串的两端部连接的所述导电体定位。
2.根据权利要求1所述的太阳能电池组件，其特征在于，
所述第一罩具备从外部对所述第一罩的内部进行遮挡的有色部，
所述定位部配置于所述有色部与所述第二罩之间。
3.根据权利要求2所述的太阳能电池组件，其特征在于，
所述定位部一体地设置于所述有色部。
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