...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Welding in the World: Journal of the International Institute of Welding: Journal of the International Institute of Welding >Influence of the surface properties of the connector material on the reliable and reproducible contacting of battery cells with a laser beam welding process
【24h】

Influence of the surface properties of the connector material on the reliable and reproducible contacting of battery cells with a laser beam welding process

机译：连接器材料的表面特性对电池单元用激光束焊接过程的可靠和可再现接触的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The increasing electrification of the automotive industry leads to a growing demand for high-performance energy storage systems. Three different cell types are used for the construction and production of battery modules or packs. These include, for example 18650 round cells, prismatic cells or pouch cells. For the electrical interconnection of prismatic energy storage devices or round cells, the laser bonding method can be used as a particularly flexible connection technology. This method combines the technique of a conventional wire bonder with laser beam welding. Compared to wire bonding, wider and thicker connectors can be contacted, and thus higher currents can be transmitted. During the production of wires/ribbons for wire bonding, sometimes complicated and costly process steps are necessary in order to ensure a consistently high quality of the produced material and consequently obtain a reproducible wire bonding process. Unfortunately, a polished and hence highly reflective surface of an aluminium or copper ribbon adversely affects the reliability of the laser beam welding process. A rough or oxidised ribbon surface however can favour the coupling of the laser radiation into the copper material and thus contribute to a stable process sequence. In this work, the influence of the surface properties of pure copper ribbons regarding the process reliability is investigated. Therefore, ribbons produced for a wire bonding process are thermally oxidised or mechanically roughened, and their optical properties are compared with a polished reference material. The sample ribbons are welded with a continuous wave fibre laser, and the mechanical properties of the resulting connection are investigated. Due to a more stable interaction of the laser radiation, a mechanically and electrically improved connection is expected.
机译：汽车行业的越来越多的电气化导致对高性能储能系统的需求不断增长。三种不同的细胞类型用于构造和生产电池模块或包装。这些包括例如18650个圆形细胞，棱柱形细胞或袋细胞。对于棱镜能量存储装置或圆形电池的电互连，激光接合方法可用作特别灵活的连接技术。该方法将传统电线焊接器的技术与激光束焊接相结合。与引线键合相比，可以接触更宽和更厚的连接器，因此可以传输更高的电流。在用于引线键合的电线/色带期间，有时是复杂和昂贵的工艺步骤，以确保生产的生产材料始终如一的高质量，并因此获得可再现的线键合工艺。不幸的是，抛光和因此铝或铜带的高反射表面对激光束焊接过程的可靠性产生了不利影响。然而，粗糙或氧化的色带表面可以利用激光辐射的耦合到铜材料中，从而有助于稳定的过程序列。在这项工作中，研究了纯铜带的表面特性关于工艺可靠性的影响。因此，为引线键合工艺生产的丝带热氧化或机械粗糙化，并将其光学性质与抛光参考材料进行比较。样品带用连续波光纤激光器焊接，并研究了所得连接的机械性能。由于激光辐射的更稳定相互作用，预期机械和电气改善的连接。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号