Secondary battery

Abstract

A secondary battery having higher safety is provided. The secondary battery includes a battery device, an outer package member, and an external terminal. The battery device includes a stacked body. The stacked body includes a first electrode and a second electrode, and is wound around a winding axis extending in a first direction. The outer package member has a through hole extending in the first direction, and contains the battery device. The external terminal is attached to the outer package member with an insulating member interposed between the external terminal and the outer package member. The external terminal is provided at a position at which the external terminal overlaps the through hole of the outer package member in the first direction. The external terminal has a curved shape including a concave surface or a convex surface facing toward the battery device.

Dependencies are inferred from the claim text.