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:
Jun. 16, 2026
Filed:
Oct. 14, 2022
Lg Energy Solution, Ltd., Seoul, KR;
Yeong Hun Jung, Daejeon, KR;
Young Ji Tae, Daejeon, KR;
Joo Hwan Sung, Daejeon, KR;
Min Su Cho, Daejeon, KR;
Geun Young Park, Daejeon, KR;
Min Gyu Kim, Daejeon, KR;
Min Seon Kim, Daejeon, KR;
Sang Hak Chae, Daejeon, KR;
Min Young Ju, Daejeon, KR;
LG ENERGY SOLUTION, LTD., Seoul, KR;
Abstract
A button-type secondary battery includes a lower can having a bottom surface; an upper can having a top, the upper can and the lower can being coupled to define a space therein; an electrolyte in the space; an electrode assembly in the space and including a negative electrode, a separator, and a positive electrode wound together; a gasket between the upper can and the lower can to electrically insulate the upper and lower cans; a top insulator that is electrically insulating and covering a top surface of the electrode assembly; and a bottom insulator that is electrically insulating and covering a bottom surface of the electrode assembly. The top and bottom insulators are each configured to expand in volume by absorbing the electrolyte. Surfaces of at least one of the top insulator and the bottom insulator are coated with a protective layer to prevent thermal shrinkage from occurring.