Meaning
Industrial press fabrication defines the method for shaping the protective structural enclosures that hold electric vehicle battery modules. Battery tray forming utilizes heavy stamping presses or roll-forming lines to bend and press sheet metal into high-strength enclosures. These trays must protect cells from external impacts and seal against moisture entry.
Structural Mechanics
Sheet metal undergoes extreme plastic deformation to establish the high walls and tight corner radii required for cell pack integration. During the battery tray forming process, blanks are held by draw rings to control material flow into the die cavity. This tension prevents wrinkling along the vertical walls of the component.
Precision is required to maintain the wall thickness.
Material Limitation
Aluminum alloys of the six thousand series are highly susceptible to localized necking and cracking when drawn to deep geometries. In battery tray forming, the use of lubrication reduces frictional heat and improves surface quality. Heated dies are sometimes used to increase the ductility of the alloy during deformation.
Process Verification
Optical scanning of the completed tray ensures that critical mounting holes and flange flatness sit within sub-millimeter tolerances. In battery tray forming, dimensional verification prevents assembly delays during the integration of liquid cooling plates. A single out-of-spec tray can cause coolant leaks or inadequate cell contact.
