CYLINDRICAL BATTERY, ELECTRIC APPARATUS AND MANUFACTURING METHOD FOR CYLINDRICAL BATTERY

The present invention relates to the technical field of batteries, and in particular to a cylindrical battery, including: a housing (1), provided with an opening and an accommodating cavity for accommodating a cell; a first current collector, arranged in the accommodating cavity, and the first current collector includes a first main body portion (21) and a second main body portion, the first main body portion is connected to the cell, and the second main body portion is connected to the housing; a side wall of the housing is provided with a beading portion (12), which is recessed towards the accommodating cavity to form a first groove (16) on an outer wall of the housing, and correspondingly form a protrusion (13) on an inner wall of the housing, at least a part (24,25) of the second main body portion extends from an edge of the first main body portion to the protrusion and covers the protrusion.