Q1: What are the engineering criteria for adopting extruded aluminum profiles for EV battery cases instead of steel boxes?
A1: Battery packs represent the heaviest sub-assembly in a new energy vehicle. Extruded aluminum cases cut housing weight by up to 45% compared to steel, extending vehicle driving ranges. Furthermore, aluminum’s superior thermal conductivity aids rapid heat management, and our precision extrusion dies can integrate intricate multi-cavity impact structures straight into the outer walls to maximize structural safety metrics without secondary welding lines.
Q2: How do your battery pack side beams satisfy automotive side-impact crashworthiness regulations?
A2: Side frames are critical crash zones designed to absorb intense kinetic energy profiles and shield cells during side-pole impacts. We utilize high-yield structural alloys like 6061-T6 or customized high-elongation 6XXX-series billets. These sections are engineered with multi-cavity cross-sectional geometric structures that deform uniformly under severe lateral stress patterns, stopping chassis penetration failures completely.
Q3: What tolerances do your CNC setups maintain to ensure strict IP67 or IP68 airtight sealing across the casing perimeter?
A3: Any moisture leakage into high-voltage pack zones can induce catastrophic short circuits. To secure absolute sealing integrity, the mating flanges of the aluminum box must remain perfectly flat. Utilizing long-bed multi-axis CNC milling centers, we hold flange profile tolerances and groove depths strictly within ±0.05mm, guaranteeing precise gasket tracking compression during automated robotic assembly.
Q4: Can your facility supply aluminum enclosures pre-insulated against high-voltage shorting hazards?
A4: Yes, absolutely. To eliminate thermal bridging and flashover threats between cell terminals and the metal chassis, we offer high-voltage dielectric surface finishes. We can apply specialized electrostatic powder insulation layers or precision co-vulcanized polymer skins precisely to your target internal faces, fully matching your custom mechanical blueprints.
