1results about How to "Effective deformation control" patented technology

This utility model relates to the field of battery welding technology, specifically a laser welding expansion fixture for large-section thin-walled cavity battery shells for electric bicycles. It mainly includes a worktable, a top clamping device, side clamping devices, and an expansion device. The worktable is welded from a tabletop and several square tubes. The expansion device is fixed to the center of the tabletop, the top clamping device is fixed to the four corners of the tabletop on the outside of the expansion device, and the side clamping devices are fixed to the four opposite sides of the tabletop. This utility model, through the triple synergy of internal expansion, side clamping, and top clamping, comprehensively controls structural deformation during the welding process. It also employs a staged welding process in conjunction with the fixture to achieve minimal deformation welding, effectively solving the deformation control problem in laser welding of large-section thin-walled cavity battery shells. This not only improves welding quality and production efficiency but also provides technical reference for welding similar thin-walled components, showing broad application prospects in the battery manufacturing field.