CN110634987A - 高效太阳能电池的多主栅焊接及自动封装的方法 - Google Patents
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Abstract
本发明属于新能源技术领域，尤其是高效太阳能电池的多主栅焊接及自动封装的方法，针对细栅的宽度受制于网印的工艺，而主栅又因为还肩负着连接焊带的责任而无法太细，太细的主栅将造成焊接的困难，无法保证焊接拉力的问题，现提出以下方案，包括如下步骤，通过自动排版机使带有导流铜丝薄膜与电池片自动排布，将主栅直接链接到相邻电池的背面，镀减反射镀层，减小阳光的反射，网印细栅，层压。本发明与传统焊接相比，省去繁琐的串焊环节，使用新型自动排版机将带有导流铜丝薄膜与电池片自动排布，通过层压使得导流铜线与细栅线紧密结合，来实现新产品制造，并且制造过程只需在传统组件制造工艺上做出局部改进便可实现量产化。
Description
技术领域
本发明涉及新能源技术领域，尤其涉及高效太阳能电池的多主栅焊接及自动封装的方法。
背景技术
太阳能是取之不尽、用之不竭的能源，而且能量巨大、安全无污染，是人类的理想能源，太阳能光伏发电是利用太阳能的主要形式之一，在全球气候变暖、人类生态环境恶化、常规能源资源短缺并造成环境污染的形势下，光伏发电在世界范围内受到高度重视，发展很快。
太阳光从电池正面进入电池，正面的金属电极会遮挡一部分硅片，这部分照在电极上的光能也就无法转变成电能，从这个角度看，栅线做的越细越好，而栅线的责任在于传导电流，从电阻率的角度分析，栅线越细则导电横截面积越小，电阻损失越大，若想在减小电阻的同时不至于增加遮光损失和材料成本，就要减小栅线的宽度；但细栅的宽度受制于网印的工艺，而主栅又因为还肩负着连接焊带的责任而无法太细，太细的主栅将造成焊接的困难，无法保证焊接拉力。
发明内容
基于细栅的宽度受制于网印的工艺，而主栅又因为还肩负着连接焊带的责任而无法太细，太细的主栅将造成焊接的困难，无法保证焊接拉力的技术问题，本发明提出了高效太阳能电池的多主栅焊接及自动封装的方法。
本发明提出的高效太阳能电池的多主栅焊接及自动封装的方法，包括如下步骤：
S1：先通过自动排版机使带有导流铜丝薄膜与电池片自动排布；
S2：再将主栅直接链接到相邻电池的背面；
S3：镀减反射镀层；
S4：网印细栅；
S5：最后进行层压。
优选地，所述将主栅直接链接到相邻电池的背面时，无需搭配焊带，其数量直接增加到两位数，主栅其实更可以看作是替代了传统焊带的角色，让更多更细的焊带直接链接电池细栅，汇集电流的同时实现电池互连，在电池层面取消了传统的主栅。
优选地，所述层压时，聚合物薄膜覆内嵌的铜线表面镀有特别的低熔点金属，通过层压机的压力和温度帮助铜线和网印的细栅结合在一起，这些铜线的一端汇集在一个较宽的汇流带上，在同一步层压工艺中连接在相邻电池的背面进行导流。
本发明中的有益效果为：
该工艺流程与传统焊接相比，省去繁琐的串焊环节，使用新型自动排版机将带有导流铜丝薄膜与电池片自动排布，通过层压使得导流铜线与细栅线紧密结合，来实现新产品制造，并且制造过程只需在传统组件制造工艺上做出局部改进便可实现量产化。
附图说明
图1为本发明提出的高效太阳能电池的多主栅焊接及自动封装的方法的多主栅实现方法示意图。
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。
参照图1，高效太阳能电池的多主栅焊接及自动封装的方法，包括如下步骤：
S1：先通过自动排版机使带有导流铜丝薄膜与电池片自动排布；
S2：再将主栅直接链接到相邻电池的背面；
S3：镀减反射镀层，减小阳光的反射；
S4：网印细栅；
S5：最后进行层压，将一层内嵌铜线的聚合物薄膜覆盖在电池正面，在随后的组件层压工艺中，薄膜熔化，层压机的压力和温度帮助铜线和网印的细栅结合在一起。
其中，所述将主栅直接链接到相邻电池的背面时，无需搭配焊带，其数量直接增加到两位数，主栅其实更可以看作是替代了传统焊带的角色，让更多更细的焊带直接链接电池细栅，汇集电流的同时实现电池互连，在电池层面取消了传统的主栅。
其中，所述层压时，聚合物薄膜覆内嵌的铜线表面镀有特别的低熔点金属，通过层压机的压力和温度帮助铜线和网印的细栅结合在一起，这些铜线的一端汇集在一个较宽的汇流带上，在同一步层压工艺中连接在相邻电池的背面进行导流。
以上所述，仅为本发明较佳的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，根据本发明的技术方案及其发明构思加以等同替换或改变，都应涵盖在本发明的保护范围之内。
Claims (3)
1.高效太阳能电池的多主栅焊接及自动封装的方法，其特征在于，包括如下步骤：
S1：先通过自动排版机使带有导流铜丝薄膜与电池片自动排布；
S2：再将主栅直接链接到相邻电池的背面；
S3：镀减反射镀层；
S4：网印细栅；
S5：最后进行层压。
2.根据权利要求1所述的高效太阳能电池的多主栅焊接及自动封装的方法，其特征在于，所述将主栅直接链接到相邻电池的背面时，无需搭配焊带，其数量直接增加到两位数，主栅其实更可以看作是替代了传统焊带的角色，让更多更细的焊带直接链接电池细栅，汇集电流的同时实现电池互连，在电池层面取消了传统的主栅。
3.根据权利要求1所述的高效太阳能电池的多主栅焊接及自动封装的方法，其特征在于，所述层压时，聚合物薄膜覆内嵌的铜线表面镀有特别的低熔点金属，通过层压机的压力和温度帮助铜线和网印的细栅结合在一起，这些铜线的一端汇集在一个较宽的汇流带上，在同一步层压工艺中连接在相邻电池的背面进行导流。
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| CN113921638A (zh) * | 2020-07-10 | 2022-01-11 | 苏州阿特斯阳光电力科技有限公司 | 焊带和具有其的光伏组件 |
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| CN112786711A (zh) * | 2020-12-31 | 2021-05-11 | 锦州阳光能源有限公司 | 一种新型ibc光伏电池组件及其制备方法 |
| CN112820799A (zh) * | 2020-12-31 | 2021-05-18 | 锦州阳光能源有限公司 | 一种ibc光伏电池组件串拼工艺 |
| CN112820799B (zh) * | 2020-12-31 | 2021-10-08 | 锦州阳光能源有限公司 | 一种ibc光伏电池组件串拼工艺 |
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