CN112768538A - 一种ibc等高效电池的掺杂区结构 - Google Patents

一种ibc等高效电池的掺杂区结构 Download PDF

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CN112768538A
CN112768538A CN201911006605.0A CN201911006605A CN112768538A CN 112768538 A CN112768538 A CN 112768538A CN 201911006605 A CN201911006605 A CN 201911006605A CN 112768538 A CN112768538 A CN 112768538A
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李跃恒
郭永刚
高艳飞
屈小勇
吴翔
席珍珍
申海超
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Huanghe Hydropower Xining Solar Power Co ltd
Qinghai Huanghe Hydropower Development Co Ltd
Huanghe Hydropower Development Co Ltd
State Power Investment Corp Xian Solar Power Co Ltd
State Power Investment Corp Ltd Huanghe Hydropower Development Co Ltd
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Qinghai Huanghe Hydropower Development Co Ltd
Huanghe Hydropower Development Co Ltd
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Abstract

本发明的目的在于公开一种IBC等高效电池的掺杂区结构，包括P型掺杂区和N型掺杂区，所述P型掺杂区与所述N型掺杂区在至少二个方向上互相相间分布，每1个P型掺杂区的周围设置有多个N型掺杂区，每1个N型掺杂区的周围设置有多个P型掺杂区；与现有技术相比，由于P型掺杂区和N型掺杂区在1个以上的多个方向上均相间分布，比普通IBC电池的P型掺杂区和N型掺杂区在水平相间的基础上增加了更多对的PN结，通过细栅线将P型掺杂区和N型掺杂区的电流进行分别引出，且细栅线不再与硅片平行或垂直，图形外观上显得更加的美观，电流的收集更加的高效，因而明显地提升了电池的转换效率，实现本发明的目的。

Description

一种IBC等高效电池的掺杂区结构
技术领域
本发明涉及一种太阳能电池结构，特别涉及一种IBC等高效电池的掺杂区结构。
背景技术
太阳能是一种清洁、高效和永不衰竭的新能源，是重要的可再生能源之一。随着太阳能行业的发展，更多的客户及太阳能电池片制造商越来越重视太阳能电池片的效率。
近年来，国内外对IBC太阳能电池进行了大量研究，有结果显示：IBC太阳能电池是未来具有替代目前的PERC可能，IBC太阳能电池可以明显提升电池的转换效率，并特别适合于屋顶使用等优点。
传统的IBC太阳能电池的P型掺杂区和N型掺杂区是呈单个方向上的相间排列(参见图1)，限制了IBC太阳能电池的效率。
因此，特别需要一种IBC等高效电池的掺杂区结构，以解决上述现有存在的问题。
发明内容
本发明的目的在于提供一种IBC等高效电池的掺杂区结构，针对现有技术的不足，在水平相间的基础上增加了更多对的PN结，提升电池的转换效率。
本发明所解决的技术问题可以采用以下技术方案来实现：
一种IBC等高效电池的掺杂区结构，其特征在于，包括P型掺杂区和N型掺杂区，所述P型掺杂区与所述N型掺杂区在至少二个方向上互相相间分布，每1个P型掺杂区的周围设置有多个N型掺杂区，每1个N型掺杂区的周围设置有多个P型掺杂区。
在本发明的一个实施例中，所述P型掺杂区与所述N型掺杂区在4个方向上互相相间排列。
在本发明的一个实施例中，所述P型掺杂区与所述N型掺杂区设置在电池片的背面。
在本发明的一个实施例中，所述P型掺杂区与所述N型掺杂区同时制备或者分开制备。
在本发明的一个实施例中，所述P型掺杂区与所述N型掺杂区分别通过细栅线互相连接并导出电流。
在本发明的一个实施例中，所述细栅线的印刷方向与或不与电池片的边缘互相平行或互相垂直。
在本发明的一个实施例中，所述细栅线的印刷方向与所述P型掺杂区和所述N型掺杂区的分布图形相匹配。
本发明的IBC等高效电池的掺杂区结构，与现有技术相比，由于P型掺杂区和N型掺杂区在1个以上的多个方向上均相间分布，比普通IBC电池的P型掺杂区和N型掺杂区在水平相间的基础上增加了更多对的PN结，通过细栅线将P型掺杂区和N型掺杂区的电流进行分别引出，且细栅线不再与硅片平行或垂直，图形外观上显得更加的美观，电流的收集更加的高效，因而明显地提升了电池的转换效率，实现本发明的目的。
本发明的特点可参阅本案图式及以下较好实施方式的详细说明而获得清楚地了解。
附图说明
图1为常规的IBC电池的掺杂区结构的结构示意图；
图2为本发明的IBC等高效电池的掺杂区结构的结构示意图。
具体实施方式
为了使本发明实现的技术手段、创作特征、达成目的与功效易于明白了解，下面结合具体图示，进一步阐述本发明。
根据图1至图2所示，本发明提供的IBC等高效电池的掺杂区结构，包括P型掺杂区1和N型掺杂区2，P型掺杂区1和N型掺杂区2在1个以上的多个方向上均互相相间排列，形成比普通IBC电池的多倍的PN结对，P型掺杂区1的电流通过P型掺杂区细栅线3将电流引出，N型掺杂区2的电流通过N型掺杂区细栅线4将电流引出。
本发明提供的IBC等高效电池的掺杂区结构，由于P型掺杂区1和N型掺杂区2在1个以上的多个方向上互相相间排列，P型掺杂区1和N型掺杂区2不再局限于一个方向上的排列，因而增加了PN结的数量，而且细栅线不再与硅片平行或垂直，图形外观上显得更加的美观，电流的收集更加的高效，因而可以明显地提升了电池的转换效率。
作为可选实施方式，P型掺杂区1和N型掺杂区2在两个方向上互相相间排列。
作为可选实施方式，P型掺杂区1和N型掺杂区2在水平和竖直方向上相间排列。
作为可选实施方式，P型掺杂区1和N型掺杂区2在电池片的背面进行掺杂区，并通过光刻进行不同掺杂区的掺杂。
作为可选实施方式，先进行P型掺杂区1的掺杂，再进行N型掺杂区2的掺杂。
作为可选实施方式，P型掺杂区1和N型掺杂区2通过细栅线进行导出电流，细栅线的材料为银浆制作而成。
作为可选实施方式，导出电流的细栅线的印刷方向为与硅片边缘夹角为45度。
本发明提供的IBC等高效电池的掺杂区结构的制备包括如下步骤：
S1：进行P型掺杂区1和N型掺杂区2的制作，形成多个方向上相间的PN结对；
S2：进行P型掺杂区细栅线3和N型掺杂区细栅线4的制作，分别对P型掺杂区1和N型掺杂区2的电流进行收集。
本发明提供的IBC等高效电池的掺杂区结构，可以实现更高的电池转换效率，有助于提高单位面积的电池发电能力，由于P型掺杂区1和N型掺杂区2在1个以上的多个方向上相间排列，P型掺杂区1和N型掺杂区2不再局限于一个方向上的排列，因而增加了PN结的数量，而且细栅线不再与硅片平行或垂直，图形外观上显得更加的美观，电流的收集更加的高效，因而可以明显提升电池的转换效率。
以上显示和描述了本发明的基本原理和主要特征和本发明的优点。本行业的技术人员应该了解，本发明不受上述实施例的限制，上述实施例和说明书中描述的只是说明本发明的原理，在不脱离本发明精神和范围的前提下，本发明还会有各种变化和改进，这些变化和改进都落入要求保护的本发明范围内，本发明要求保护范围由所附的权利要求书及其等效物界定。

Claims (7)

1.一种IBC等高效电池的掺杂区结构，其特征在于，包括P型掺杂区和N型掺杂区，所述P型掺杂区与所述N型掺杂区在至少二个方向上互相相间分布，每1个P型掺杂区的周围设置有多个N型掺杂区，每1个N型掺杂区的周围设置有多个P型掺杂区。
2.如权利要求1所述的IBC等高效电池的掺杂区结构，其特征在于，所述P型掺杂区与所述N型掺杂区在4个方向上互相相间排列。
3.如权利要求1所述的IBC等高效电池的掺杂区结构，其特征在于，所述P型掺杂区与所述N型掺杂区设置在电池片的背面。
4.如权利要求1所述的IBC等高效电池的掺杂区结构，其特征在于，所述P型掺杂区与所述N型掺杂区同时制备或者分开制备。
5.如权利要求1所述的IBC等高效电池的掺杂区结构，其特征在于，所述P型掺杂区与所述N型掺杂区分别通过细栅线互相连接并导出电流。
6.如权利要求1所述的IBC等高效电池的掺杂区结构，其特征在于，所述细栅线的印刷方向与或不与电池片的边缘互相平行或互相垂直。
7.如权利要求1所述的IBC等高效电池的掺杂区结构，其特征在于，所述细栅线的印刷方向与所述P型掺杂区和所述N型掺杂区的分布图形相匹配。
CN201911006605.0A 2019-10-22 2019-10-22 一种ibc等高效电池的掺杂区结构 Pending CN112768538A (zh)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102881737A (zh) * 2012-10-15 2013-01-16 浙江正泰太阳能科技有限公司 体结背接触太阳能电池
CN106158990A (zh) * 2016-07-21 2016-11-23 英利能源（中国）有限公司 Ibc电池、电池组及制备方法
CN107146820A (zh) * 2017-03-10 2017-09-08 泰州隆基乐叶光伏科技有限公司 全背电极太阳电池结构及其制备方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102881737A (zh) * 2012-10-15 2013-01-16 浙江正泰太阳能科技有限公司 体结背接触太阳能电池
CN106158990A (zh) * 2016-07-21 2016-11-23 英利能源（中国）有限公司 Ibc电池、电池组及制备方法
CN107146820A (zh) * 2017-03-10 2017-09-08 泰州隆基乐叶光伏科技有限公司 全背电极太阳电池结构及其制备方法

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