Energy storage element, metal component, and energy storage element manufacturing method

Abstract

The present invention is provides an energy storage element, in which a metal component is formed by forming a protrusion on a plate shaped member while ensuring the mechanical strength of and in the vicinity of the protrusion. An energy storage element (100) includes: a metal component (2) that is a metal plate member that includes a protrusion (2b)extending from a surface of the metal plate member, and is provided as a portion of a container (101). The protrusion (2b) includes: a tubular portion (22) provided at a tip end of the protrusion in an extending direction, and a base portion (21) that is solid and extends from the surface of the metal component (2) to the tubular portion (22) in the extending direction.

Description

technical field [0001] The present invention relates to an electrical storage element in which a metal part having a protrusion formed thereon, which is processed and formed from a plate surface of a metal plate-shaped member, is used as a part of the frame, the metal part itself, and the plate of the plate-shaped member A method of manufacturing an electrical storage device in which a metal part standing upright is a part of a housing. Background technique [0002] Metal parts having protrusions are used in various applications. For example, as described in Patent Document 1 below, metal fittings and other components are positioned and fixed using protrusions. [0003] When forming a protrusion on a metal plate-shaped member, a solid protrusion as described in Patent Document 1 below is formed. [0004] (Prior art literature) [0005] (patent documents) [0006] Patent Document 1: Japanese Patent Laid-Open No. 2001-340928 [0007] However, in the structure in which the...

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Problems solved by technology

[0007] However, in the structure in which the entire protrusion is solid, the mechanical strength of the protrusion itself is strong, and the resistance when an external force acts on the protrusion is high, but the processing for forming the protrusion is not easy.

In addition, when it is desired to further deform the protrusion for assembling with other parts after the protrusion is formed, the processing is not easy.

[0008] In order to facilitate the processing of the protrusion, it is conceivable to form the entire protrusion into a cylindrical shape by press working or the like, but this means that the mechanical strength of the protrusion decreases.

[0009] In addition, when a solid protrusion is formed on a plate-shaped member by plastic deformation, since a part of the thickness of the plate-shaped member is used for forming the protrusion, there is also a possibility that the mechanical strength of the plate-shaped member will decrease.

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