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:
Aug. 04, 2026
Filed:
Nov. 01, 2021
Lg Energy Solution, Ltd., Seoul, KR;
Bu Won Son, Daejeon, KR;
Jin Yeong Lee, Daejeon, KR;
Jin Soo Lee, Daejeon, KR;
Jae Won Lim, Daejeon, KR;
Jeong Ho Park, Daejeon, KR;
LG ENERGY SOLUTION, LTD., Seoul, KR;
Abstract
A welding device welds an electrode tab protruding from an electrode assembly of a button-type battery to a can of the button-type battery. The welding device includes a base to support a bottom surface of the can when an inner surface of the can faces an upper side, and the electrode tab is in contact with the inner surface of the can; a jig on the base to fix the electrode tab on the base and having an opening hole through which a laser light for welding the electrode tab to the can passes; a laser irradiation device to irradiate the laser light to the opening hole when the jig fixes the electrode tab to the can; and four probes on the base or the jig. Two probes of the probes are connected to a power source, and the remaining two probes are connected to a voltmeter.