电芯生产用超薄金属箔的高速激光切割

IF 1.7 4区 工程技术 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Journal of Laser Applications Pub Date : 2023-11-01 DOI:10.2351/7.0001091
Alessandro Ascari, Caterina Angeloni, Erica Liverani, Alessandro Fortunato
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引用次数: 0

摘要

激光制造已成为电动汽车领域电池和电池单元生产的关键使能技术。事实上,一些应用已经工业化了,比如基于激光的焊接、切割、剥离和清洁。在所有这些技术中,特别是激光切割,必须处理几个非常严格的限制:高反射材料(铝和铜)的存在,非常低的厚度(6-12 μm),实时加工,以及切割表面的高质量。在此基础上,本文研究了利用电振扫描仪和单模恒定波和纳秒脉冲波两种不同光纤激光源对12 μm厚铝箔和6 μm厚铜箔进行远程切割的应用。实验活动致力于了解该过程的可行性,并指出两种不同激光器的优缺点。利用光学显微镜和扫描电镜对切削刃进行了分析,以表征切削质量。该过程还具有最大可实现速度方面的特征,以便了解激光和galvo扫描系统的限制。
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High speed laser cutting of ultrathin metal foils for battery cell production
Laser-based manufacturing has become a key enabling technology in the production of batteries and battery cells for the e-mobility field. Several applications, in fact, have already been industrialized, such as laser-based welding, cutting, stripping, and cleaning. Among all those technologies, laser cutting, in particular, has to deal with several very stringent constraints: the presence of highly reflective materials (aluminum and copper), very low thicknesses (6–12 μm), on-the-fly processing, and high quality of the cutting surface. According to those considerations, the present paper deals with the application of remote cutting of 12 μm thick aluminum and 6 μm thick copper foils by means of a galvo scanner and two different fiber laser sources: single mode constant wave and nanosecond pulsed wave ones. The experimental activity is devoted to understanding the feasibility of the process and to point out the pros and cons of the two different lasers involved. The cutting edges are analyzed by means of optical and SEM microscopy, in order to characterize cutting quality. The process is also characterized in terms of maximum achievable speed in order to understand the limits of both lasers and galvo scanning systems.
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来源期刊
CiteScore
3.60
自引率
9.50%
发文量
125
审稿时长
>12 weeks
期刊介绍: The Journal of Laser Applications (JLA) is the scientific platform of the Laser Institute of America (LIA) and is published in cooperation with AIP Publishing. The high-quality articles cover a broad range from fundamental and applied research and development to industrial applications. Therefore, JLA is a reflection of the state-of-R&D in photonic production, sensing and measurement as well as Laser safety. The following international and well known first-class scientists serve as allocated Editors in 9 new categories: High Precision Materials Processing with Ultrafast Lasers Laser Additive Manufacturing High Power Materials Processing with High Brightness Lasers Emerging Applications of Laser Technologies in High-performance/Multi-function Materials and Structures Surface Modification Lasers in Nanomanufacturing / Nanophotonics & Thin Film Technology Spectroscopy / Imaging / Diagnostics / Measurements Laser Systems and Markets Medical Applications & Safety Thermal Transportation Nanomaterials and Nanoprocessing Laser applications in Microelectronics.
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