CN111564522B - 结合p型和n型太阳能电池片的光伏组件制备方法 - Google Patents
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Abstract
本发明涉及一种结合P型和N型太阳能电池片的光伏组件制备方法,包括以下步骤:首先放置预置有金属丝的第一塑料胶膜;再在第一塑料胶膜上横向放置成排的P型电池片与N型电池片,形成电池片整列,且P型电池片与N型电池片间隔布置;然后在电池片整列的一侧和另一侧分别放置汇流条;在电池片整列的上方放置有金属丝的第二塑料胶膜,第一金属丝和第二金属丝的金属丝具有X距离的错位;将上述的叠层件经过热压合形成层压件,形成短路现象,然后以扫描激光或者机械方式间隔性地切断第一金属丝和第二金属丝,第一金属丝和第二金属丝上形成断口;最后将压合件进行封装形成光伏组件。本发明可以提高光伏组件的生产效率。
Description
技术领域
本发明涉及一种新结构的光伏组件电池片的制备方法,属于光伏技术领域。
背景技术
传统的组件生产工艺,需要如图1的方式,将电池片1一片一片的方式与互连条2堆叠起来,再一片片的的加热焊接起来成为电池串 3之后再将许多电池串3依其正负极电性排列成如图2的阵列,再用数个汇流条将串与串逐次的焊接起来,形成串联或并联的电路。如此的作业方式需要多个设备(如串焊机、电池片排板机及汇流条焊接机等)来完成且需一片一片的排列及焊接,生产效率较低。
发明内容
本发明的目的在于提供一种提高生产效率的结合P型和N型太阳能电池片的光伏组件制备方法。
为了达到上述目的,本发明的技术方案是:一种结合P型和N型太阳能电池片的光伏组件制备方法,包括以下步骤:
第一步:首先放置预置有金属丝的第一塑料胶膜,其第一金属丝面向上;
第二步:再在第一塑料胶膜上横向放置成排的P型电池片与N型电池片,形成电池片整列,且P型电池片与N型电池片间隔布置;
第三步:然后在电池片整列的一侧和另一侧分别放置汇流条;
第四步:再在电池片整列的上方放置有金属丝的第二塑料胶膜,其第二金属丝面向下,且第一金属丝和第二金属丝的金属丝具有X距离的错位,;
第五步:将步骤四中的叠层件经过热压合形成层压件,形成短路现象,然后以扫描激光或者机械方式间隔性地切断第一金属丝和第二金属丝,第一金属丝和第二金属丝上形成断口,使原本短路的电路形成正负极串联的回路;
第六步:最后将第五步的压合件进行封装形成光伏组件。
优选的,所述P型电池片正面为负极背面为正极,N型电池片正面为正极背面为负极。
优选的,所述第一塑料胶膜和第二塑料胶膜可以为PET、PE、PVDF、 PVF、EVA、ETFE、THV或尼龙,与粘着层EVA、PVB、TPO和TPU的一种复合制成。
优选的,所述第一金属丝和第二金属丝主要为铜、铝、银、金等易导电金属制成,并于其表面浸镀锡与铅,或银,或铋,或铟等合金所制成。
采用上述结构后,本发明在在同一光伏组件中同时使用P型电池片与N型电池片的电池片组件,来解决传统电池片需要透过互连条来连接电池片正负极的费时方式,且可同时将电池串与电池串之间连接的汇流条一并完成焊接作业,提高生产效率。
附图说明
图1是背景技术中电池片与互连条串堆结构;
图2是现有技术的电池片整列结构;
图3是本发明中P型电池片结构示意图;
图4是本发明中N型电池片结构示意图;
图5是其中一块电池片的侧视图;
图6是本发明的爆炸图;
图7是本发明光伏组件成型后示意图;
图8是图7的侧视图。
具体实施方式
以下结合附图给出的实施例对本发明作进一步详细的说明。
一种结合P型和N型太阳能电池片的光伏组件制备方法,包括以下步骤:
参见图6所示,首先放置预置有金属丝的第一塑料胶膜8,其第一金属丝81面向上,再在第一塑料胶膜8上横向放置成排的P型电池片5与N型电池片6,形成电池片整列,且P型电池片5与N型电池片6间隔布置;参见图6所示,先放置一排P型电池片5,该实施例中一排数量为四块,再放置一排同等数量的N型电池片6,以此类推。然后在电池片整列的一侧和另一侧分别放置汇流条4;一侧的汇流条4放置三块,另一侧放置两块。再在电池片整列的上方放置有金属丝的第二塑料胶膜8’,其第二金属丝81’面向下,且参见图5所示,第一金属丝81和第二金属丝81’的金属丝具有X距离的错位;以提供第五步作业方式中选择性切断第一或第二金属丝时所需的作业空间,使激光切割时有空间,不会同时切除上下的金属丝,造成断路,将叠层件经过热压合形成层压件,形成短路现象,然后以扫描激光或者机械方式间隔性地切断第一金属丝81和第二金属丝81’,参见图8所示,第一金属丝81和第二金属丝81’上形成断口9,使原本短路的电路形成正负极串联的回路;最后将层压件进行封装形成光伏组件。
本实施例中每块电池片上排布的第一金属丝81和第二金属丝 81’数量为四根,然金属丝的数量可视电池片的大小(或电流大小) 而定。参见图3和4所示,所述P型电池片5正面为负极背面为正极, N型电池片6正面为正极背面为负极。所谓的P型电池片5,是在P 型的衬底的硅片的基础上,在表面以扩散等方式植入五价的原子(如磷),形成N型的扩散层,故正面为负极,而背面则为为正极。而N 型电池片6,则是在N型的衬底的硅片(如参杂磷)的基础上,在表面以扩散等方式植入三价的原子(如硼),形成P型的扩散层,故正面为正极,而背面则为为负极。
参见图7所示,所述第一塑料胶膜8和第二塑料胶膜8’为PET,当然也可以为PE、PVDF、PVF、EVA、ETFE、THV或尼龙,与粘着层 EVA、PVB、TPO和TPU的一种复合制成。
参见图7所示,所述第一金属丝81和第二金属丝81’主要为铜,但可为其它如铝、银、金等导电金属制成,表面浸镀锡、铅、银、铋或铟等合金所制成。
光伏组件的多个生产工序,如电池片单焊,电池片串焊,电池串定位,汇流条焊接等多道工艺汇集成单一工序完成,有效提高传统光伏组件的生产效率。
Claims (3)
1.一种结合P型和N型太阳能电池片的光伏组件制备方法,其特征在于:包括以下步骤:
第一步:首先放置预置有金属丝的第一塑料胶膜(8),其第一金属丝(81)面向上;
第二步:再在第一塑料胶膜(8)上横向放置成排的P型电池片(5)与N型电池片(6),形成电池片阵列,且P型电池片(5)与N型电池片(6)间隔布置,所述P型电池片(5)正面为负极背面为正极,是在P型的衬底的硅片的基础上,在表面以扩散方式植入五价的原子,形成N型的扩散;所述N型电池片(6)正面为正极背面为负极,是在N型的衬底的硅片的基础上,在表面以扩散方式植入三价的原子,形成P型的扩散层;
第三步:然后在电池片阵列的一侧和另一侧分别放置汇流条(4);
第四步:再在电池片阵列的上方放置有金属丝的第二塑料胶膜(8’),其第二金属丝(81’)面向下,且第一金属丝(81)和第二金属丝(81’)的金属丝具有X距离的错位;
第五步:将上述的叠层件经过热压合形成层压件,形成短路现象,然后以扫描激光或者机械方式间隔性地切断第一金属丝(81)和第二金属丝(81’),第一金属丝(81)和第二金属丝(81’)上形成断口(9),使原本短路的电路形成正负极串联的回路;
第六步:最后将层压件进行封装形成光伏组件。
2.根据权利要求1所述的结合P型和N型太阳能电池片的光伏组件制备方法,其特征在于:所述第一塑料胶膜(8)和第二塑料胶膜(8’)可以为PET、PE、PVDF、PVF、EVA、ETFE、THV或尼龙,与粘着层EVA、PVB、TPO和TPU的一种复合制成。
3.根据权利要求1所述的结合P型和N型太阳能电池片的光伏组件制备方法,其特征在于:所述第一金属丝(81)和第二金属丝(81’)主要为铜、铝、银金等易导电金属制成,并于其表面浸镀锡与铅,或银,或铋,或铟等合金所制成。
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CN104465892A (zh) * | 2014-12-31 | 2015-03-25 | 中国科学院上海微系统与信息技术研究所 | 太阳电池串中相邻太阳电池的同侧互联的光伏组件制作方法 |
CN106098830A (zh) * | 2016-08-02 | 2016-11-09 | 泰州中来光电科技有限公司 | 一种同侧互联的太阳能电池串及制备方法和组件及系统 |
CN106449798A (zh) * | 2016-11-16 | 2017-02-22 | 南昌大学 | 一种双面进光晶硅光伏组件及其制造方法 |
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