Patent ID: 9172078
Filing Date: 2015-10-27
Classification: H01M,Y02E,Y02P,Y10T

Abstract:
1. An energy storage element, comprising: a container; an electrode assembly housed in the container; an electrode terminal; a current collector which electrically connects the electrode terminal and the electrode assembly; and an insulation member which insulates the container and the electrode terminal, wherein the container includes a protrusion part which protrudes outward from an upper surface of the container, wherein the protrusion part includes a top part including a through-hole for allowing penetration of the electrode terminal, wherein the electrode terminal is electrically connected to the current collector in a state where the electrode terminal penetrates through the protrusion part via the through-hole, wherein the insulation member includes a side part positioned along a side surface of the protrusion part, wherein the side part of the insulation member includes an end part which faces the upper surface of the container and is spaced apart from the upper surface, and wherein the end part of the side part and the upper surface of the container are apart from each other before the current collector and the electrode terminal are pressure-bonded to each other such that there is no pressure between the end part of the side part and an upper surface of a cap part of the container.