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:
Feb. 24, 2026
Filed:
Sep. 16, 2021
Lg Energy Solution, Ltd., Seoul, KR;
Min Gyu Kim, Daejeon, KR;
Joo Hwan Sung, Daejeon, KR;
Yong Gon Lee, Daejeon, KR;
Je Jun Lee, Daejeon, KR;
Jae Won Lim, Daejeon, KR;
Geon Woo Min, Daejeon, KR;
Min Su Cho, Daejeon, KR;
Sang Hak Chae, Daejeon, KR;
LG ENERGY SOLUTION, LTD., Seoul, KR;
Abstract
A button-type secondary battery includes a lower can; an upper can is coupled to the lower can; an electrode assembly is on the lower can in an accommodation space defined between the lower can and the upper can. The lower can includes a first planar part, on which the electrode assembly is seated, and a first sidewall disposed vertically along a circumference of the first planar part such that a concave portion is defined in the first sidewall. The upper can includes a second planar part, which has an area that covers an opened top surface of the lower can, and a second sidewall disposed vertically along a circumference of the second planar part such that a convex portion is on an inner surface of the second sidewall. When the sidewall is coupled to be placed outside the first sidewall, the convex portion is fitted into the concave portion.