Mandrel for winding electrode of secondary battery

Abstract

The present disclosure relates to a mandrel for winding an electrode of a secondary battery, and provides a mandrel for winding an electrode of a secondary battery including a first mandrel member comprising a plurality of exterior faces including longitudinal side surfaces and a first surface, wherein a first hollow portion is provided between the longitudinal side surfaces, and a second mandrel member spaced apart from the first mandrel member and comprising a plurality of exterior faces including second longitudinal side surfaces and a second surface, wherein a second hollow portion is provided between the second longitudinal side surfaces.

Dependencies are inferred from the claim text.