THE OUTCOME Following completion of the testing, the MTC identified an optimum laser power output to achieve targeted improvements in wire bond strength. This output resulted in a 130% increase in bond strength of the negative terminals and 40% increase for positive terminals, and a significant reduction in variability. The optimised cleaned cells also showed significant improvement on repeatability and pull testing performance of the cells during the wire bonding process. Other factors that impacted wire bonding test results were also identified, such as variation in oxide layer thickness due to different batches of battery cells. Following completion of the project, MSS introduced Electroflight to laser systems manufacturer IPG Photonics to support the adoption of onsite laser technology in-line with the findings from the MTC’s study.
BENEFITS TO THE CLIENT Improved reliability and performance of battery modules. Enhanced wire bond strength and reduced variability, resulting in quality and safety improvements. Increased cleaning speed and subsequent productivity. Introduction to laser systems manufacturer to support on next stages of the project.
21
Made with FlippingBook - professional solution for displaying marketing and sales documents online