CN104766900A - 波形辊压焊带及其加工装置 - Google Patents
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- 238000005096 rolling process Methods 0.000 title abstract 4
- 229910052802 copper Inorganic materials 0.000 claims abstract description 35
- 239000010949 copper Substances 0.000 claims abstract description 35
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 33
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000010422 painting Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 10
- 239000000463 material Substances 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 2
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- 230000001360 synchronised effect Effects 0.000 abstract 1
- 238000001816 cooling Methods 0.000 description 5
- 230000007547 defect Effects 0.000 description 4
- 230000035882 stress Effects 0.000 description 4
- 101150006573 PAN1 gene Proteins 0.000 description 3
- 229910000679 solder Inorganic materials 0.000 description 3
- 150000001879 copper Chemical class 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 230000008646 thermal stress Effects 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002210 silicon-based material Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
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Abstract
本发明公开了太阳能电池生产材料领域内的一种波形辊压焊带，在涂锡前在铜带的一侧表面辊压有若干微齿，微齿的齿高为铜带厚度的1/8~1/10，齿距为铜带厚度的1~1.5倍。铜带降温收缩时，其可对抗太阳能电池的翘曲，保证了电池片的平整度，为后续的堆叠提供了便利，减少了电池片的压裂的可能性。本发明还提供了上述波形辊压焊带的加工装置，包括相平行设置的上刀轴和下刀轴，上刀轴上平行设置有若干上刀盘，下刀轴上平行设置有若干下刀盘，相邻上刀盘之间设有齿辊，相邻下刀盘之间设有光辊，光辊和齿辊相耦合设置。齿辊在铜带上压出微齿，还起到同步牵引的作用，驱动铜带前进。其结构简单、加工方便。
Description
技术领域
本发明涉及一种太阳能电池的生产材料，特别涉及一种用作互联条的焊带及其生产装置。
背景技术
太阳能组件要实现发电的功能必须将单片的电池连接起来使之形成一个整体，对于晶硅电池常用的连接方式是焊接。电池片在焊接过程中若是控制不当会造成一定的缺陷，这些缺陷在使用过程中有可能造成热斑，有时会严重影响组件的寿命甚至烧毁组件。
焊接过程中最容易出现的缺陷为明显裂纹或者需要借助工具才可以看见的隐形裂纹。造成这种缺陷的因素主要是由于硅材料，银浆和焊带的热应力不匹配造成的。由于焊接过程中要经过瞬间冷却，温度从250℃左后迅速降到室温，急剧的温度变化会在焊带与电池片之间产生很大的应力，焊接结束后由于这种应力的作用会造成电池片的弓形，这种弓形在敷设、层压及以后的使用过程中很有可能发展成隐裂或者碎片。
电池片的弓形一般发生在冷却的过程中，这主要是因为焊接过程中，钎料融化后要迅速冷却到室温以保证良好的焊接拉力，冷却速度可高达200~300℃/s，由于材料热膨胀系数的差异，必然导致热应力的存在，因此在焊后会出现弓形。
软焊带由于其特殊的基材处理工艺，可以从一定程度上明显降低这种弓形，进而降低组件的碎片率，通过实际焊接发现超软焊带能够降低这种翘曲1~2mm。软焊带主要是从材料配方角度着手，使焊带变软，伸长率变大，其在使用过程中，主要是通过适应性变化，减少脱焊的可能性，但其不能阻止焊接时，电池片的变形。
发明内容
本发明的目的是提供一种波形辊压焊带及其加工装置，在焊接时可减小电池片的变形。
本发明的目的是这样实现的：一种波形辊压焊带，在涂锡前在铜带的一侧表面辊压有若干微齿。
作为本发明的进一步改进，所述微齿的齿高为铜带厚度的1/8~1/10，齿距为铜带厚度的1~1.5倍。
该铜带浸锡后使用，在设有微齿的一面堆积的锡较多，锡与铜的接触面大，涂锡牢度大，由于铜的热胀系数为17.5，锡的热胀系数为2.0，在焊接时，微齿一侧作为焊接面，铜带降温收缩时，其可对抗太阳能电池的翘曲，尽管其内应力有所增大，但并不足以将电池片拉断或拉裂，保证了电池片的平整度，为后续的堆叠提供了便利，减少了电池片的压裂的可能性。
本发明还公开了用于加工上述波形辊压焊带的加工装置，包括相平行设置的上刀轴和下刀轴，上刀轴上平行设置有若干上刀盘，下刀轴上平行设置有若干下刀盘，所述上刀盘和下刀盘穿插在一起，相邻上刀盘之间设有齿辊，相邻下刀盘之间设有光辊，所述光辊和齿辊相耦合设置。
铜带经过该装置时，一方面上刀盘和下刀盘将铜带分切成多根，另一方面齿辊在铜带上压出微齿，同时，齿辊还起到同步牵引的作用，驱动铜带前进。其结构简单、加工方便。
附图说明
图1为波形辊压焊带结构示意图。
图2为波形辊压焊带的加工装置结构示意图。
图3为图2中加工装置的工作原理图。
其中，1上刀盘，2上刀轴，3下刀轴，4下刀盘，5齿辊，6铜带，6a微齿，7光辊。
具体实施方式
实施例1
如图1所示，为一种波形辊压焊带，在涂锡前在铜带6的一侧表面辊压有若干微齿6a，微齿6a的齿高为铜带厚度的1/8~1/10，齿距为铜带厚度的1~1.5倍。
该铜带浸锡后使用，在设有微齿的一面堆积的锡较多，锡与铜的接触面大，涂锡牢度大，由于铜的热胀系数为17.5，锡的热胀系数为2.0，在焊接时，微齿一侧作为焊接面，铜带降温收缩时，铜和锡的收缩率不一致，其可对抗太阳能电池的翘曲，尽管其内应力有所增大，但并不足以将电池片拉断或拉裂，保证了电池片的平整度，为后续的堆叠提供了便利，减少了电池片的压裂的可能性。
实施例2
如图2和3所示，为波形辊压焊带的加工装置，包括相平行设置的上刀轴2和下刀轴3，上刀轴2上平行设置有若干上刀盘1，下刀轴3上平行设置有若干下刀盘4，上刀盘1和下刀盘4穿插在一起，可将带材分切成若干铜带，相邻上刀盘1之间设有齿辊5，相邻下刀盘4之间设有光辊7，光辊7和齿辊5相耦合设置。
铜带经过该装置时，一方面上刀盘1和下刀盘2将铜带分切成多根，另一方面齿辊在铜带上压出微齿6a，同时，齿辊5还起到同步牵引的作用，驱动铜带前进。
本发明并不局限于上述实施例，在本发明公开的技术方案的基础上，本领域的技术人员根据所公开的技术内容，不需要创造性的劳动就可以对其中的一些技术特征作出一些替换和变形，这些替换和变形均在本发明的保护范围内。
Claims (3)
1.一种波形辊压焊带，其特征在于在涂锡前在铜带的一侧表面辊压有若干微齿。
2.根据权利要求1所述的波形辊压焊带，其特征在于：所述微齿的齿高为铜带厚度的1/8~1/10，齿距为铜带厚度的1~1.5倍。
3.根据权利要求1或2所述的波形辊压焊带的加工装置，其特征在于：包括相平行设置的上刀轴和下刀轴，上刀轴上平行设置有若干上刀盘，下刀轴上平行设置有若干下刀盘，所述上刀盘和下刀盘穿插在一起，相邻上刀盘之间设有齿辊，相邻下刀盘之间设有光辊，所述光辊和齿辊相耦合设置。
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107634118A (zh) * | 2016-07-18 | 2018-01-26 | 江苏太阳科技股份有限公司 | 一种能加强转换效率的太阳能焊带 |
| CN109509806A (zh) * | 2018-12-26 | 2019-03-22 | 苏州阿特斯阳光电力科技有限公司 | 太阳能电池组件及其加工该组件中汇流条的工装 |
| CN110233186A (zh) * | 2019-07-04 | 2019-09-13 | 江苏友科太阳能科技有限公司 | 一种高功率增益的焊带及其制作方法 |
-
2014
- 2014-01-03 CN CN201410002352.0A patent/CN104766900A/zh active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107634118A (zh) * | 2016-07-18 | 2018-01-26 | 江苏太阳科技股份有限公司 | 一种能加强转换效率的太阳能焊带 |
| CN109509806A (zh) * | 2018-12-26 | 2019-03-22 | 苏州阿特斯阳光电力科技有限公司 | 太阳能电池组件及其加工该组件中汇流条的工装 |
| CN110233186A (zh) * | 2019-07-04 | 2019-09-13 | 江苏友科太阳能科技有限公司 | 一种高功率增益的焊带及其制作方法 |
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