How an Extrusion Die Shapes a Battery Box Profile
A hollow battery box cannot be cut in one piece. Metal splits around die bridges and welds back inside the tool. Six figures decide what the die can hold.
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Quzhou Aoyin Metal Materials Co.,Ltd
AOYIN Insights
Process & tooling
Practical guides on aluminum extrusion, battery enclosures and EV manufacturing — written for engineers and sourcing teams.
Battery Box Wall Thickness: How Thin Is Too Thin
No standard sets a minimum wall. Fill, stiffness, threads, tolerance and corrosion each set one: 0.8 mm at 75 mm across, 2.0 mm by 200 mm.
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How Aluminum Battery Boxes Are Made: Extrusion, Casting and Welding
The manufacturing routes for an aluminum battery enclosure - what happens on the line at each step, and which process fits which annual volume.
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Friction Stir Welding for Aluminum Battery Trays
A tray can come off the line looking perfect and still fail helium test three days later. How friction stir welds really form, and why they leak.
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Extrusion vs Die Casting vs Stamping for Battery Boxes
Extrusion tooling costs a fraction of die casting, but the break-even sits at a few thousand parts. Which process fits your geometry and annual volume.
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How Aluminum Extrusion Works for Battery Boxes
A solid billet 200 mm across goes into the press and comes out a 1.5 mm wall in seconds. What that does to grain, weld seams and final temper.
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