High-cleanness, zero-damage, high-throughput cleaning solutions for
xEV lithium-ion battery structural parts, battery enclosures, and die-cast housings for BMS / e-drive systems
1. Typical cleaning targets & contamination profiles
| Part | Common material | Dominant contaminants | Down-stream requirement |
|---|---|---|---|
| Cell can / top cover | Al 3003 / 6061 | Drawing oil, carbon black, Al fines, oxide film | Laser weld leak-tight ≥ IP67 |
| Battery tray / lower housing | Al-Si die-cast | Mold-release, weld oxide, dust | Adhesive / powder-coat adhesion ≥ Grade 1 |
| Busbar / terminal | Cu-ETP | Oxide, ceramic dust, fingerprints | Laser weld void ratio ≤ 2 % |
| BMS & e-drive housings | ADC12 die-cast | Coolant residues, silicates, grease | Conformal-coat adhesion & Hi-Pot test |
2. Process–equipment–parameter quick selector
| Process step | Recommended technology | Key equipment | Operating window | Key benefits |
|---|---|---|---|---|
| Cell can degreasing & oxide removal | Vacuum hydrocarbon + ultrasonic | Vacuum hydrocarbon machine with ultrasonics & vacuum drying | 55–65 °C, 3–5 min, ≤ 100 ppm residual oil | Zero-waste water, 90 % solvent recovery |
| Deburring tapped holes in cast housings | High-pressure water deburring + vacuum drying | 5-axis 50–100 MPa waterjet + vacuum oven | 30–60 s per hole, ≤ 2 L water/min | Removes M4–M12 blind-hole burrs |
3. Turn-key example: pre-laser-weld cleaning cell
Robot loading: Vision-guided robot picks housing.
In-line QC: Confocal thickness sensor + AI defect detection, real-time feedback of oil/oxide film.
Robot unloading: Vacuum gripper feeds to laser welding station.
Tact time ≤ 12 s / part.
4. Quick selection guide
Fully automatic vacuum hydrocarbon line
