Welding strategies for joining copper and aluminum by fast oscillating, high quality laser beam

Elke Kaiser; Guenter Ambrosy; Evangelos Papastathopoulos

doi:10.1117/12.2545893

2 March 2020 Welding strategies for joining copper and aluminum by fast oscillating, high quality laser beam

Elke Kaiser, Guenter Ambrosy, Evangelos Papastathopoulos

Proceedings Volume 11273, High-Power Laser Materials Processing: Applications, Diagnostics, and Systems IX; 112730C (2020) https://doi.org/10.1117/12.2545893
Event: SPIE LASE, 2020, San Francisco, California, United States

Abstract

In this paper we present advances in strategies for joining dissimilar materials like copper and aluminum to realize battery connections by implementing distinct laser welding strategies with a fast oscillating single mode laser beam. The high beam quality enables a stable in coupling into high reflective copper connectors with low spatter events. To achieve joints with high electric conductivity a beam oscillation pattern is executed in order to create adequate cross-sections to enables high current flow. This is crucial for fast battery charging and extended lifetime of the batteries. The mechanical stability is achieved in a micro structured manner in such a way wherein the created intermetallic phase zone between copper and aluminum is minimized by implementing very accurate and very small metal mixture through compression of isotherms and melt flow guidance. TRUMPF’s new generation of the product line TruFiber together with matching scanner optics (PFO series) have been implemented to demonstrate the above-mentioned strategy.

Conference Presentation

Citation Download Citation

Elke Kaiser, Guenter Ambrosy, and Evangelos Papastathopoulos "Welding strategies for joining copper and aluminum by fast oscillating, high quality laser beam", Proc. SPIE 11273, High-Power Laser Materials Processing: Applications, Diagnostics, and Systems IX, 112730C (2 March 2020); https://doi.org/10.1117/12.2545893

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available