CODELAB
Classification of defects and acceptance levels for increased electrical safety in laser welded aluminum busbars.
About the project
CODELAB is a collaborative research project funded by Vinnova and coordinated by Swerim, running from August 2025 to August 2027. Together with partners Scania, Volvo AB, Lasertech, and Svetskommissionen, we aim to improve electrical safety, battery durability, and fire protection in laser welded aluminum busbars.
Laser welding is increasingly used in battery module manufacturing, especially for aluminum busbars that carry high currents. However, the lack of standardized guidelines for defect classification and acceptance levels leads to:
Inconsistent testing
Reduced electrical performance
Increased safety risks
Higher scrap rates and costs
Project goals
Develop industry-wide guidelines for defect classification and acceptance levels
Support international standardization efforts
Promote skills development through seminars, training, and publications
Ways to contribute
The industry currently lacks unified standards for laser welded current-carrying welds in battery modules. We are looking for input from companies, researchers, and regulators to help us:
Identify common defect types and how they are currently detected and measured
Understand what problems these defects cause in real-world applications
Learn about your existing QA systems and acceptance criteria
Define practical and realistic acceptance limits
Whether you work in manufacturing, quality assurance, R&D, or regulation, your insights can help shape safer and more efficient battery systems.
Submit your input