Laser welding of aluminum battery tab to variable Al/Cu busbars in Li-ion battery joint

IF 1.4 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY AIMS Materials Science Pub Date : 2022-01-01 DOI:10.3934/matersci.2022053
Ehsan Harati, P. Kah
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引用次数: 1

Abstract

The trend is shifting from internal combustion engines (ICEs) to battery electric vehicles (BEVs). One of the important battery joints is battery tabs to the busbar connection. Aluminum (Al) and copper (Cu) are among the common materials for busbar and battery tab manufacturing. A wide range of research shows that the laser welding of busbar to battery tabs is a very promising technique. It can enhance the battery module's safety and reliability owing to its unique properties. The desired strength, ductility, fatigue life as well as electrical resistivity are crucial to attain in laser welding of dissimilar materials aluminum and copper in busbar to battery tab in BEVs. Therefore, an adequate understating of the principal factors influencing the Al–Cu busbar to battery tabs joint properties are of prime importance. The current review paper provides information on laser welding and laser brazing of dissimilar Al–Cu with thin thicknesses. Also, the common defects, the effect of materials properties on laser joining, and laser-materials interaction during the laser welding process are discussed. Laser process parameters adjustment (e.g., laser power or speed), laser operational mode, and proper choice of materials (e.g., base metals, alloying elements, filler metals, etc.) may enhance the joint properties in terms of mechanical and electrical properties.
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锂离子电池接头中铝电池片与可变铝/铜母线的激光焊接
这一趋势正在从内燃机(ice)转向纯电动汽车(bev)。其中一个重要的电池接头是电池接头与母线的连接。铝(Al)和铜(Cu)是母线和电池片制造的常用材料。广泛的研究表明,激光焊接母线与电池片是一种非常有前途的技术。由于其独特的性能,可以提高电池模块的安全性和可靠性。在纯电动汽车母线与电池片的不同材料铝和铜的激光焊接中,获得所需的强度、延展性、疲劳寿命和电阻率至关重要。因此,充分了解影响铝铜母线与电池接头性能的主要因素是至关重要的。本文综述了异种铝铜薄壁激光焊接和激光钎焊的研究进展。讨论了激光焊接过程中常见的缺陷、材料性能对激光连接的影响以及激光与材料的相互作用。激光工艺参数的调整(如激光功率或速度)、激光操作模式和材料的适当选择(如贱金属、合金元素、填充金属等)可以在机械和电气性能方面提高接头的性能。
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来源期刊
AIMS Materials Science
AIMS Materials Science MATERIALS SCIENCE, MULTIDISCIPLINARY-
CiteScore
3.60
自引率
0.00%
发文量
33
审稿时长
4 weeks
期刊介绍: AIMS Materials Science welcomes, but not limited to, the papers from the following topics: · Biological materials · Ceramics · Composite materials · Magnetic materials · Medical implant materials · New properties of materials · Nanoscience and nanotechnology · Polymers · Thin films.
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