Battery casing ablation (unwrapping prismatic battery cells)

Battery with blue coating and heat sinks showing

Prismatic, like other format cells in automotive applications, are often wrapped in self-adhesive PET heat shrink film. This film might need selective or complete removal:

  • to add heat management components to the bare metal of the can
  • to rework non-conforming cells in the production cycle
  • to recycle the battery at the end of its life

These processes are mainly done manually by cutting the foil with knives and scraping it off before wiping off the residues with solvents. This mechanical and chemical process leaves a clean but scratched surface.

Non-contact laser processing allows partial or full automation of the process and handling of cells of different shapes and sizes in high volumes.

A Luxinar CO2 laser source is used with a galvo scanner to ablate the film, leaving only an invisible, thin layer of residue on the bare metal that can be removed by simply wiping it with isopropanol. The laser process avoids the need for harsh solvents and intensive mechanical effort.

A three-axis scanner with one laser can process three surfaces, and two lasers with a scanner will process all six sides of the battery.

Battery casing ablation with CO2 lasers
Battery with blue coating and heat sinks showing

Have any questions? Get in touch

OEM series CO2 laser sources
OEM series CO2 laser sources from Luxinar

OEM series

450W to 1kW sealed CO2 laser source

Applications laboratories

Could a laser be used to improve your manufacturing process? We can help you to find out by testing samples of your material or product in one of our applications labs. Our applications lab facilities are open to both new and existing customers and OEMs. Our laboratories are well equipped to carry out a range of processes including cutting, marking, engraving, drilling, scribing, ablation and more. We offer rapid sample turnaround times, detailed application reports, and complimentary advice from our experienced applications engineers. Whatever your process, we can help you to determine the best laser for your application.