4.6 Article

Quasi-Continuous Wave Pulsed Laser Welding of Copper Lap Joints Using Spatial Beam Oscillation

Related references

Note: Only part of the references are listed.
Review Optics

A review on dissimilar laser welding of steel-copper, steel-aluminum, aluminum-copper, and steel-nickel for electric vehicle battery manufacturing

Amirhossein Sadeghian et al.

Summary: Laser welding is considered an ideal choice for EV battery manufacturing due to its non-contact nature and precise control over heat input, but the incompatible thermos-physical properties of dissimilar materials pose a significant challenge for achieving complete metallurgical bond. This paper reviews the fundamental difficulties and latest developments in dissimilar laser welding of various materials in EV battery pack manufacturing, discussing weld microstructure, common metallurgical defects, and joint properties.

OPTICS AND LASER TECHNOLOGY (2022)

Article Optics

Beam wobbling effects on laser transmission welding of dissimilar polymers: Experiments, modeling, and process optimization

Dhiraj Kumar et al.

Summary: This paper investigates the experimental and mathematical modeling optimization of wobble LTW of dissimilar transparent polymers. Beam wobbling improves heat distribution and material intermixing, enhancing joint strength. The study implements TLBO algorithm and DFA-based optimization method to improve weld quality and achieve desired responses, with TLBO showing stronger convergence towards global optima compared to DFA.

OPTICS AND LASER TECHNOLOGY (2022)

Article Chemistry, Analytical

In-Process Analysis of Melt Pool Fluctuations with Scanning Optical Coherence Tomography for Laser Welding of Copper for Quality Monitoring

Thomas Will et al.

Summary: Optical coherence tomography (OCT) is an inline process monitoring technology that can be used for laser welding to measure weld depth and width, as well as identify fluctuations in the keyhole. By varying laser processing parameters, different weld statuses can be classified, providing feedback on possible defects.

MICROMACHINES (2022)

Article Optics

Laser wobble welding of steel to Aluminium busbar joints for Li-ion battery packs

M. Chelladurai Asirvatham et al.

Summary: This study investigates the feasibility of using laser wobble welding to connect steel to aluminium busbars and examines the effect of wobble amplitude on weld properties. The research findings show that the appropriate wobble amplitude can significantly improve the weld geometry, microstructure, mechanical strength, and electrical resistance.

OPTICS AND LASER TECHNOLOGY (2022)

Article Optics

Analysis of copper sheets welded by fiber laser with beam oscillation

Diana Franco et al.

Summary: The study discusses a new method for laser welding of copper plates, overcoming challenges such as high thermal conductivity and low absorptivity by power spatial modulation of the laser beam. It was found that welding with beam oscillation can produce defect-free welds and result in a unique microstructure in the fusion zone.

OPTICS AND LASER TECHNOLOGY (2021)

Article Engineering, Manufacturing

In-depth evaluation of laser-welded similar and dissimilar material tab-to-busbar electrical interconnects for electric vehicle battery pack

Nikhil Kumar et al.

Summary: The increasing use of electric vehicles has led to a demand for more efficient and faster joining processes for electrical interconnects within battery packs, with laser welding emerging as a main technology due to its high speed capabilities. This study focused on investigating laser overlap welding for producing tab-to-busbar interconnects for Li-ion battery assembly, analyzing joint strength, intermetallic compound formation, resistance, and temperature rise to develop better and safer battery systems. The research found that laser welding was effective in achieving strong joints with various materials, providing valuable insights for electric vehicle battery applications.

JOURNAL OF MANUFACTURING PROCESSES (2021)

Article Engineering, Manufacturing

High-Precision Adjustment of Welding Depth during Laser Micro Welding of Copper Using Superpositioned Spatial and Temporal Power Modulation

Marc Hummel et al.

Summary: The study investigates the use of temporal and spatial power modulation in laser beam micro welding to achieve variable control of the weld penetration depth. The combined power modulation enables precise control of the welding depth in different material combinations.

JOURNAL OF MANUFACTURING AND MATERIALS PROCESSING (2021)

Article Metallurgy & Metallurgical Engineering

Laser welding of laser-structured copper connectors for battery applications and power electronics

Johanna Helm et al.

WELDING IN THE WORLD (2020)

Article Optics

Laser pressure welding of copper

Jingquan Zhang et al.

OPTICS AND LASER TECHNOLOGY (2020)

Review Materials Science, Multidisciplinary

Automotive battery pack manufacturing - a review of battery to tab joining

M. F. R. Zwicker et al.

JOURNAL OF ADVANCED JOINING PROCESSES (2020)

Article Automation & Control Systems

A review on laser beam welding of copper alloys

S. T. Auwal et al.

INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY (2018)

Article Chemistry, Multidisciplinary

Influence of Surface State in Micro-Welding of Copper by Nd:YAG Laser

Martin Ruthandi Maina et al.

APPLIED SCIENCES-BASEL (2018)

Proceedings Paper Engineering, Manufacturing

Sound welding of copper: laser beam welding in vacuum

Uwe Reisgen et al.

LASER ASSISTED NET SHAPE ENGINEERING 9 INTERNATIONAL CONFERENCE ON PHOTONIC TECHNOLOGIES PROCEEDINGS OF THE LANE 2016 (2016)

Article Engineering, Industrial

Enhanced welding efficiency in laser welding of highly reflective pure copper

Hui-Chi Chen et al.

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY (2015)

Article Energy & Fuels

Welding techniques for battery cells and resulting electrical contact resistances

Martin J. Brand et al.

JOURNAL OF ENERGY STORAGE (2015)

Article Optics

Spectroscopic characterization of low-nickel copper welding with pulsed Nd:YAG laser

S. Dadras et al.

OPTICS AND LASERS IN ENGINEERING (2008)