Cylindrical cell and cylindrical secondary battery

Abstract

A cylindrical cell includes a first electrode plate, a separator, and a second electrode plate. The first electrode plate includes a first current collector, the first current collector is provided with a first blank foil region along an axial direction of the cylindrical cell, and the first blank foil region has a first chamfer at a terminating end of a winding direction of the cylindrical cell; and/or the second electrode plate includes a second current collector, the second current collector is provided with a second blank foil region along an axial direction of the cylindrical cell, and the second blank foil region has a second chamfer at a terminating end of a winding direction of the cylindrical cell. In this application, lengths of a first distance and a second 10 distance of the first chamfer and/or the second chamfer are controlled to be within appropriate ranges.

Dependencies are inferred from the claim text.