Secondary battery

Abstract

The secondary battery includes a battery device, a container member, and a safety valve mechanism. The safety valve mechanism is attached to an end part, of the container member, in a height direction. The safety valve mechanism includes a valve member having an electrically conductive property, an insulating holder member, and an electrically conductive member. The valve member includes a valve part and an annular protruding part. The valve part is cleavable. The annular protruding part extends along a horizontal plane and surrounds the valve part. The horizontal plane is orthogonal to the height direction. The insulating holder member includes insulating pieces into which the insulating holder member is divided in a circling direction in which the annular protruding part extends. The insulating pieces each include an abutting part positioned on an inner side of the annular protruding part in a radial direction of the container member and abutting against the annular protruding part. The electrically conductive member includes a projecting part electrically coupled to the valve part. The electrically conductive member overlaps with the valve member in the height direction and is held by the insulating holder member.

Dependencies are inferred from the claim text.