Cylindrical batteries

Abstract

Cylindrical battery, characterized in that it comprises a core (10), wherein the core (10) comprises one or more electrode plates (11), wherein a tab (12) is disposed at at least one end of each electrode plate (11), and the tab (12) is spaced from the winding start point (101) and the winding end point (102) of each electrode plate (11), wherein the cylindrical battery further comprises at least one current collector plate (20), wherein the end surface of the current collector plate (20) facing the tab (12) is welded to the tab (12), and the diameter of the current collector plate (20) is less than or equal to the maximum diameter of the core (10).