Laser Marking on Batteries (Electrodes and Insulation)

Batteries are the primary power source of electric and hybrid vehicles. They regain their power through direct charging or vehicle deceleration. Automotive manufacturers recently started using lithium-ion batteries, which have a larger capacity and a more compact/lightweight design compared to traditional options.

A / B / C
A: 2D code and serial number marking on the battery cover
A battery has a case and a cover, which are marked for traceability to optimize manufacturing and assembly.
B: Battery cover surface roughening
Laser light is used to roughen the adhesion surface of the battery cover and case to improve the bonding strength.
C: 2D code marking on electrodes
2D code marking is becoming widespread. In the past, only battery cases were marked. Now, there's an increasing need to mark individual electrodes along with the case.