CN108365027A - 一种p型晶硅双面太阳能电池及电池制造方法 - Google Patents

一种p型晶硅双面太阳能电池及电池制造方法 Download PDF

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CN108365027A
CN108365027A CN201810373627.XA CN201810373627A CN108365027A CN 108365027 A CN108365027 A CN 108365027A CN 201810373627 A CN201810373627 A CN 201810373627A CN 108365027 A CN108365027 A CN 108365027A
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常青
洪布双
尹丙伟
余波
张元秋
王岚
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Abstract

本发明公开了一种P型晶硅双面太阳能电池，包括双面电池片，所述背面铝浆副栅线上连接有若干根背面铝浆主栅线，每根所述背面铝浆主栅线呈间断式设置，且间断处设置有导电胶带填充线；所述背面铝浆主栅线和导电胶带填充线上连接有导电胶带串联线。本发明还公开了一种电池制造方法，用于制造P型晶硅双面太阳能电池，包括以下步骤：步骤一、背面副栅线印刷；步骤二、背面主栅线印刷；步骤三、导电胶带填充；步骤四、导电胶带串联。本发明的导电胶带填充线直接与背面铝浆主栅线粘接并固定在电池背面，使得导电胶带串联线在串联电池片时，可以通过导电胶带之间的双向粘性，更好的进行连接，导电胶带串联线不会轻易脱落。

Description

一种P型晶硅双面太阳能电池及电池制造方法
技术领域
本发明涉及双面电池能电池技术领域，具体为一种P型晶硅双面太阳能电池及电池制造方法。
背景技术
随着太阳能技术的发展，双面发电组件逐渐受到市场的青睐，双面发电组件使用的电池是可双面受光发电的电池，电池的背面均有类似于正面的主栅线和副栅线，目前市场上P型双面太阳能电池的制造过程是在单面电池的基础上，将背面铝背场改成铝栅线设计，同时保留背银电极的印刷，这种双面电池制造过程由于使用到背银电极的印刷，不利于成本的降低；另外，对应双面组件的制造过程需要使用到焊带进行焊接，电池片碎片和隐裂片风险极高。
为了解决上述提出的问题，现有技术中，申请号为“201320344107.9”的一种太阳能电池，采用新工艺流程，背面采用全铝浆印刷，减少背电极印刷，节省100％的背电极银浆，提升Voc，提高Isc，既可以降低银浆的使用量，又可以省去背银的印刷过程，从而大幅降低电池制造成本；电池正面采用无主栅设计，节省正面银浆50％，提升Isc，电池背面采用3条3M导电胶粘贴背面，起导电电极作用；电池正面采用3条3M导电胶粘贴在正面，起汇流、导电电极作用，电池的串联和并联可以通过导电胶直接连接，使用导电胶带替代焊带可以提升电池片之间的连接稳定性，并且可以避免由于焊带导致的电池片碎片和隐裂。
但是上述该太阳能电池，对于背面电极的处理方法，仍然存在较多问题：1、上述该电池是指单面太阳能电池，主体不同；2、背面直接采用全铝浆进行印刷形成背电场，没有任何栅线的印刷，相对于双面电池而言完全不一样；3、直接采用导电胶带与铝背场进行粘贴，粘贴效果不好，极易脱落。
发明内容
本发明的目的在于提供一种P型晶硅双面太阳能电池及电池制造方法，以解决上述背景技术中提出的问题。
为实现上述目的，本发明提供如下技术方案：
一种P型晶硅双面太阳能电池，包括双面电池片，所述双面电池片的电池背面设置有背面铝浆副栅线，所述背面铝浆副栅线上连接有若干根背面铝浆主栅线，每根所述背面铝浆主栅线呈间断式设置，且间断处设置有导电胶带填充线；
所述背面铝浆主栅线和导电胶带填充线上连接有导电胶带串联线。
一种电池制造方法，用于制造P型晶硅双面太阳能电池，包括以下步骤：
步骤一、背面副栅线印刷：对电池背面进行背面铝浆副栅线的印刷；
步骤二、背面主栅线印刷：在电池背面上间断式的印刷出背面铝浆主栅线；
步骤三、导电胶带填充：在背面铝浆主栅线的间断处填充有导电胶带填充线；
步骤四、导电胶带串联：使用导电胶带串联线将背面铝浆主栅线和导电胶带填充线连接起来。
与现有技术相比，本发明的有益效果是：
1、本发明的双面电池的背面结构去掉了背银电极，节省银浆耗用，降低成本；
2、本发明的制造方法省去了印刷背银电极的过程，简化电池制造流程；
3、本发明的背面结构方替换成铝浆进行印刷，可以有效减少背银对电池的腐蚀破坏作用，从而使太阳能电池的光电转换效率绝对值提升0.2％；
4、本发明的导电胶带填充线直接与背面铝浆主栅线粘接并固定在电池背面，使得导电胶带串联线在串联电池片时，可以通过导电胶带之间的双向粘性，更好的进行连接，导电胶带串联线不会轻易脱落。
附图说明
图1为本发明的双面太阳能电池结构示意图；
图2为本发明的电池背面印刷背面铝浆副栅线结构示意图；
图3为本发明的电池背面印刷背面铝浆主栅线结构示意图；
图4为本发明的导电胶带填充线结构示意图。
图中：1双面电池片、2电池背面、3背面铝浆副栅线、4背面铝浆主栅线、5导电胶带填充线、6导电胶带串联线。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
请参阅图1-4，本发明提供一种技术方案：
一种P型晶硅双面太阳能电池，包括双面电池片1，双面电池片1的电池背面2设置有背面铝浆副栅线3，背面铝浆副栅线3上连接有若干根背面铝浆主栅线4，如说明书附图1所示，背面铝浆主栅线4设置有三根，每根背面铝浆主栅线4呈间断式设置，且间断处设置有导电胶带填充线5，导电胶带填充线5与背面铝浆主栅线4固定粘接，且与电池背面2也固定粘接。
背面铝浆主栅线4和导电胶带填充线5上连接有导电胶带串联线6，导电胶带填充线5和导电胶带串联线6均具有粘性，使得导电胶带串联线6可以与背面铝浆主栅线4电性连接的效果更好。
一种电池制造方法，用于P型晶硅双面太阳能电池，包括以下步骤：
步骤一、背面副栅线印刷：如说明书附图2所示，对电池背面2进行背面铝浆副栅线3的印刷；
步骤二、背面主栅线印刷：如说明书附图3所示，在电池背面2上间断式的印刷出背面铝浆主栅线4；
步骤三、导电胶带填充：如说明书附图4所示，在背面铝浆主栅线4的间断处填充有导电胶带填充线5，通过低温加热，使得导电胶带具有粘性，与电池背面2和背面铝浆主栅线4粘接导电；
步骤四、导电胶带串联：如说明书附图1所示，使用导电胶带串联线6将背面铝浆主栅线4和导电胶带填充线5连接起来，通过导电胶带的粘性，使得导电胶带填充线5和导电胶带串联线6通过双向粘性进行粘结导电，连接更加稳定。
尽管已经示出和描述了本发明的实施例，对于本领域的普通技术人员而言，可以理解在不脱离本发明的原理和精神的情况下可以对这些实施例进行多种变化、修改、替换和变型，本发明的范围由所附权利要求及其等同物限定。

Claims (2)

1.一种P型晶硅双面太阳能电池，包括双面电池片(1)，其特征在于：所述双面电池片(1)的电池背面(2)设置有背面铝浆副栅线(3)，所述背面铝浆副栅线(3)上连接有若干根背面铝浆主栅线(4)，每根所述背面铝浆主栅线(4)呈间断式设置，且间断处设置有导电胶带填充线(5)；
所述背面铝浆主栅线(4)和导电胶带填充线(5)上连接有导电胶带串联线(6)。
2.一种电池制造方法，用于制造权利要求1所述的P型晶硅双面太阳能电池，其特征在于，包括以下步骤：
步骤一、背面副栅线印刷：对电池背面(2)进行背面铝浆副栅线(3)的印刷；
步骤二、背面主栅线印刷：在电池背面(2)上间断式的印刷出背面铝浆主栅线(4)；
步骤三、导电胶带填充：在背面铝浆主栅线(4)的间断处填充有导电胶带填充线(5)；
步骤四、导电胶带串联：使用导电胶带串联线(6)将背面铝浆主栅线(4)和导电胶带填充线(5)连接起来。
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CN109273537A (zh) * 2018-08-15 2019-01-25 苏州太阳井新能源有限公司 一种互连栅线和制作方法，适用的太阳能电池及互连方式
CN114834147A (zh) * 2022-04-12 2022-08-02 中威新能源(成都)有限公司 太阳能电池粘接材料印刷装置
EP3979332A4 (en) * 2019-06-24 2023-07-05 Longi Solar Technology (Taizhou) Co., Ltd. SOLAR CELL AND MANUFACTURING PROCESS THEREOF

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