Patent ID: 9350004
Filing Date: 2016-05-24
CPC Classification: H01M,Y02E

Claim Text:
1. A cylindrical secondary battery, comprising: a jellyroll-shaped electrode assembly, comprising first and second electrode plates, a separator disposed therebetween, and first and second electrode tabs respectively extending from the first and second electrode plates; a can configured to house the electrode assembly; a cap assembly, affixed to the can, and configured to seal an opening of the can, wherein the electrode assembly has a top surface facing the cap assembly; and an integrated assembly comprising a gasket, an insulation plate extending from the gasket, and a central pin extending from the insulation plate, into a central portion of the electrode assembly, wherein the integrated assembly is formed as a single unit, such that the gasket, the insulation plate, and the central pin are integral and contiguous portions of the integrated assembly, and wherein the can is crimped against the integrated assembly, such that the gasket is bent to secure the cap assembly, and the insulation plate is pressed against an end of the electrode assembly, wherein the insulation plate is inclined with respect to the top surface of the electrode assembly, wherein one end of the insulation plate contacts the electrode assembly and another end of the insulation plate contacts the cap assembly, wherein the insulation plate comprises a top surface facing the cap assembly, wherein a portion of the top surface of the insulation plate contacts the cap assembly, and wherein the remaining portion of the top surface of the insulation plate is spaced apart from the cap assembly.