Laser beam welding in battery cell production-Contacting of thermally sensitive electrode stacks for advanced cell technologies

被引：0

作者：

Grabmann S. ^{[1
]}

Harst F. ^{[1
]}

Mayr L. ^{[1
]}

Zäh M. ^{[1
]}

机构：

[1] Technische Universität München, TUM School of Engineering and Design, Institut für Werkzeug-maschinen und Betriebswissenschaften (iwb), Boltzmannstr. 15, Garching bei München

来源：

WT Werkstattstechnik | 2023年 / 113卷 / 03期

关键词：

Battery cells - Cell technology - Cell-be - Cell/B.E - Cell/BE - Cells production - Current-collector - Electrode stacks - High thermal - Thermally sensitives;

D O I：

10.37544/1436-4980-2023-03-21

中图分类号：

学科分类号：

摘要：

Laser beam welding of electrode stacks for internal contacting of battery cells is challenging. The low thickness of current collector foils and the high thermal expansion of aluminum cause the foils to bulge and detach during the process. The use of nanosecond laser pulses enables to join the aluminum foils to the arrester tab with low heat input. Sequential welding of in-dividual seam sections reduces the distortion of the foils and allows for more homogeneous seam properties. © 2023, VDI Fachmedien GmBH & Co. KG. All rights reserved.

引用

页码：87 / 92

页数：5