CN105977326A - 光伏焊带 - Google Patents

光伏焊带 Download PDF

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CN105977326A
CN105977326A CN201610344403.7A CN201610344403A CN105977326A CN 105977326 A CN105977326 A CN 105977326A CN 201610344403 A CN201610344403 A CN 201610344403A CN 105977326 A CN105977326 A CN 105977326A
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photovoltaic
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杨勇
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/042PV modules or arrays of single PV cells
    • H01L31/05Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells
    • H01L31/0504Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/042PV modules or arrays of single PV cells
    • H01L31/05Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells
    • H01L31/0504Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module
    • H01L31/0508Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module the interconnection means having a particular shape
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy

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  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
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  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Photovoltaic Devices (AREA)

Abstract

本发明涉及光伏组件技术领域,尤其是一种光伏焊带;包括导电基带,所述导电基带的受光面分为压花段和光滑段,所述压花段与光滑段交替排列,所述光滑段的左右两侧开有倒梯形凹槽,所述压花段的表面包括若干凸起,所述凸起的表面为弧形;在焊带制成过程中形成分段压花,增加了焊带与背电极的接触面积的同时还提高了焊接后光伏焊带表面入射光的利用率,从而提高了光伏组件转换效率;导电基带的背光面有焊接凹槽,焊接凹槽的深度为5μm;所述焊接凹槽成W型,采用此结构,焊接凹槽的部位填充焊锡后,可以在不平整的焊接表面提供额外的焊锡填充,可以提高焊接的可靠性。

Description

光伏焊带
技术领域
本发明涉及光伏组件技术领域,尤其是一种光伏焊带。
背景技术
众所周知,太阳光无处不在,鉴于太阳光对应的光能取之不竭,用之不尽,因此,利用太阳光实现能量利用的项目越来越多,截至目前,利用太阳光发电在现有电力供应中所扮演着越来越重要的角色。
焊带是光伏组件焊接过程中的重要原材料,焊带质量的好坏将直接影响到光伏组件电流的收集效率,对光伏组件的功率影响很大。如何通过焊带的异构化,来增加电池片的转化率,降低碎片率,一直是焊带行业研究的课题之一。
中国专利CN101789452A 给出了一种涂锡焊带,其包括铜带及其表面的涂锡层,涂锡层表面具有均匀分布的坑状体。这种焊带在一定程度上使太阳光在坑状体中发生漫反射,提高了接受太阳光的能量。但是,其坑状体仅发生漫反射,反射回电池片的太阳光比例很小,提高的转化率有限;此外,其凹坑是在涂锡过程中制备,会产生不均匀的焊料层,并会产生与电池片焊接不牢的现象,出现虚焊。
发明内容
本发明要解决的技术问题是:克服现有技术中的不足,提供一种电池组件的功率高、焊接面积大的光伏焊带。
为解决上述技术问题,本发明采用的技术方案如下:
一种光伏焊带,包括导电基带,所述导电基带的受光面分为压花段和光滑段,所述压花段与光滑段交替排列,所述光滑段的左右两侧开有倒梯形凹槽,所述压花段的表面包括若干凸起,所述凸起的表面为弧形;
所述导电基带的受光面和左右两侧粘贴有保护膜层。
进一步的,所述倒梯形凹槽的深度为16-18μm,所述倒梯形凹槽的底部宽度为8-10μm;所述倒梯形凹槽的上部宽度为15-18μm。
进一步的,所述凸起的高度为100-120μm,所述凸起底部之间的间距为60-80μm,所述凸起顶部之间的间距为100-120μm。
进一步的,所述导电基带的背光面有焊接凹槽,所述焊接凹槽的深度为5μm。
进一步的,所述焊接凹槽成W型。
进一步的,所述倒梯形凹槽的侧壁和底面上有若干用于增加散射的凸出颗粒。
采用本发明的技术方案的有益效果是:
本发明的导电基带的受光面分为压花段和光滑段,压花段与光滑段交替排列,光滑段的左右两侧开有倒梯形凹槽,压花段的表面包括若干凸起,所述凸起的表面为弧形;在焊带制成过程中形成分段压花,增加了焊带与背电极的接触面积的同时还提高了焊接后光伏焊带表面入射光的利用率,从而提高了光伏组件转换效率;
导电基带的背光面有焊接凹槽,焊接凹槽的深度为5μm;所述焊接凹槽成W型,采用此结构,焊接凹槽的部位填充焊锡后,可以在不平整的焊接表面提供额外的焊锡填充,可以提高焊接的可靠性。
附图说明
下面结合附图和实施例对本发明进一步说明。
图1为本发明的结构示意图;
图2为本发明的光伏焊带的背光面的结构示意图。
图中:
1压花段,2光滑段,3凸起,4凸出颗粒,5焊接凹槽。
具体实施方式
现在结合附图对本发明作进一步详细的说明。这些附图均为简化的示意图,仅以示意方式说明本发明的基本结构,因此其仅显示与本发明有关的构成。
如图1和图2 所示,一种光伏焊带,包括导电基带,导电基带的受光面分为压花段1和光滑段2,压花段1与光滑段2交替排列,光滑段2的左右两侧开有倒梯形凹槽,压花段1的表面包括若干凸起3,凸起3的表面为弧形;在焊带制成过程中形成分段压花,增加了焊带与背电极的接触面积的同时还提高了焊接后光伏焊带表面入射光的利用率,从而提高了光伏组件转换效率,而不影响正面陷光结构;
导电基带的受光面和左右两侧粘贴有保护膜层;
倒梯形凹槽的深度为16-18μm,倒梯形凹槽的底部宽度为8-10μm;倒梯形凹槽的上部宽度为15-18μm。
优选的,凸起3的高度为100-120μm,凸起3底部之间的间距为60-80μm,凸起3顶部之间的间距为100-120μm;采用此结构,当某个角度入射进来的太阳光经第一次反射后反射到凸起靠下端的弧形球面上,而经过该弧形球面反射后反射到相邻的另一个凸起靠下端的弧形球面上,最终又反射到焊带的受光面上,不会反射出去,进一步提高了入射光的利用率。
优选的,导电基带的背光面有焊接凹槽5,焊接凹槽5的深度为5μm;所述焊接凹槽5成W型,采用此结构,焊接凹槽5的部位填充焊锡后,可以在不平整的焊接表面提供额外的焊锡填充,可以提高焊接的可靠性。
优选的,倒梯形凹槽的侧壁和底面上有若干用于增加散射的凸出颗粒4;采用此结构,使得光线在照射到焊带上的凹槽表面时,可以发生散射,经过太阳能玻璃板的反射后照射到太阳能电池板上,使得光线最大程度的得到利用。
以上述依据本发明的理想实施例为启示,通过上述的说明内容,相关工作人员完全可以在不偏离本项发明技术思想的范围内,进行多样的变更以及修改。本项发明的技术性范围并不局限于说明书上的内容,必须要根据权利要求范围来确定其技术性范围。

Claims (6)

1.一种光伏焊带,其特征在于:包括导电基带,所述导电基带的受光面分为压花段和光滑段,所述压花段与光滑段交替排列,所述光滑段的左右两侧开有倒梯形凹槽,所述压花段的表面包括若干凸起,所述凸起的表面为弧形;
所述导电基带的受光面和左右两侧粘贴有保护膜层。
2.根据权利要求1所述的光伏焊带,其特征在于:所述倒梯形凹槽的深度为16-18μm,所述倒梯形凹槽的底部宽度为8-10μm;所述倒梯形凹槽的上部宽度为15-18μm。
3.根据权利要求1所述的光伏焊带,其特征在于:所述凸起的高度为100-120μm,所述凸起底部之间的间距为60-80μm,所述凸起顶部之间的间距为100-120μm。
4.根据权利要求1所述的光伏焊带,其特征在于:所述导电基带的背光面有焊接凹槽,所述焊接凹槽的深度为5μm。
5.根据权利要求4所述的光伏焊带,其特征在于:所述焊接凹槽成W型。
6.根据权利要求1所述的光伏焊带,其特征在于:所述倒梯形凹槽的侧壁和底面上有若干用于增加散射的凸出颗粒。
CN201610344403.7A 2016-05-23 2016-05-23 光伏焊带 Pending CN105977326A (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109935650A (zh) * 2019-03-19 2019-06-25 盛利维尔(中国)新材料技术股份有限公司 叠瓦式光伏组件用焊带
CN117457774A (zh) * 2023-12-25 2024-01-26 天合光能股份有限公司 太阳能电池片用焊带结构和太阳能电池片

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204289484U (zh) * 2014-12-23 2015-04-22 上海华友金裕微电子有限公司 一种微聚光增效光伏焊带
CN204464302U (zh) * 2015-04-14 2015-07-08 保定市易通光伏科技有限公司 光伏焊带
CN204558495U (zh) * 2015-05-08 2015-08-12 深圳市华光达科技有限公司 具有散射反射层的铜铝复合光伏焊带
CN204614802U (zh) * 2015-02-04 2015-09-02 晋能清洁能源科技有限公司 分段压花光伏焊带及光伏焊带分段压花装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204289484U (zh) * 2014-12-23 2015-04-22 上海华友金裕微电子有限公司 一种微聚光增效光伏焊带
CN204614802U (zh) * 2015-02-04 2015-09-02 晋能清洁能源科技有限公司 分段压花光伏焊带及光伏焊带分段压花装置
CN204464302U (zh) * 2015-04-14 2015-07-08 保定市易通光伏科技有限公司 光伏焊带
CN204558495U (zh) * 2015-05-08 2015-08-12 深圳市华光达科技有限公司 具有散射反射层的铜铝复合光伏焊带

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109935650A (zh) * 2019-03-19 2019-06-25 盛利维尔(中国)新材料技术股份有限公司 叠瓦式光伏组件用焊带
CN117457774A (zh) * 2023-12-25 2024-01-26 天合光能股份有限公司 太阳能电池片用焊带结构和太阳能电池片
CN117457774B (zh) * 2023-12-25 2024-05-14 天合光能股份有限公司 太阳能电池片用焊带结构和太阳能电池片

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Application publication date: 20160928