Audi challenged Alro Group to find a solution for multiple necessary treatments of the aluminium battery casing for their electric vehicles. Alro responded by developing a number of innovative technologies integrated into one state-of-the-art automated system.
The aluminium battery casing is subjected to a fully automated process.
- Power & Free transport system
A 7-axis robot introduces the bare aluminium parts into the process. The Power & Free transport system consists of more than one kilometre of buffer lines that ensure flexibility between the paint line and the laser cell.
The first important treatment is KTL coating. The aluminium surface then goes through several successive steps: degreasing, application of an anti-corrosion coating, rinsing with deionised water, KTL coating, final rinsing and curing in a furnace.
After that, the coating racks arrive at the lifts via the buffer system. The robots then take the individual parts from the racks and place them in the laser chamber in a clamp-forward position.
Alro uses an innovative laser technology application to selectively remove the coating. The robotic laser system very accurately removes the coating from the large surrounding connection surfaces and the battery contact points in each battery cell.
After the laser treatment, a handling robot places the parts on the monorail. There, the battery casings receive PVC protection and all parts get another quality check.
This innovative laser technology implementation and the integration of several fully automated processes into one system makes Alro Group the perfect partner in the innovative world of e-mobility.