METHOD FOR ASSEMBLING POLE TERMINAL OF CYLINDRICAL BATTERY

A method for assembling a pole terminal of a cylindrical battery includes the following steps: step 1: laser welding an irregular-shaped screw at a central position of a current collector plate, to form a composite current collector plate; step 2: laser welding the current collector plate to a tab of a core; step 3: covering the current collector plate with an insulating sheet; step 4: covering the insulating sheet and the core with a housing with an opening facing downward, where the irregular-shaped screw extends upward through an irregular-shaped hole to reach an outer side of a top of the housing; step 5: combining a nut and a nut seal gasket to form a composite nut; step 6: rotatably mounting the composite nut on the irregular-shaped screw; and step 7: welding and fixing a threaded fit between the nut and the irregular-shaped screw from above with laser.