The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 08, 2025
Filed:
Jul. 05, 2022
Lg Energy Solution, Ltd., Seoul, KR;
Junghoon Lee, Daejeon, KR;
Su Taek Jung, Daejeon, KR;
LG Energy Solution, Ltd., Seoul, KR;
Abstract
A method is provided to inspect weld states of a cylindrical battery. The cylindrical battery may include: a cylindrical jelly roll in which a first current collector, a first separator, a second current collector, and a second separator are sequentially stacked and wound, so as to extend in the vertical direction; a first collector plate which is coupled to the upper end of the jelly roll and to the lower surface of which the first current collector is firstly welded; and a second collector plate which is coupled to the lower end of the jelly roll and to the upper surface of which the second current collector is secondly welded. The method may include a first measurement step, a second measurement step, a first weld determination step, and a second weld determination step.