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. 02, 2024
Filed:
Dec. 29, 2020
Lg Energy Solution, Ltd., Seoul, KR;
Jung Hoon Lee, Daejeon, KR;
Su Taek Jung, Daejeon, KR;
Seok Jin Kim, Daejeon, KR;
Ji Hoon Lee, Daejeon, KR;
Sang Hyun Koo, Daejeon, KR;
LG ENERGY SOLUTION, LTD., Seoul, KR;
Abstract
A method for inspecting a welding defect of the present invention includes: a threshold resistance setting step (S) of measuring a resistance of a welded portion of a sample group and deriving a threshold resistance value which becomes an evaluation standard of a weak welding; a resistance measuring step (S) of measuring a resistance value of a welded portion to be inspected; and a step (S) of determining as a weak welding if the resistance value measured in the resistance measuring step exceeds the threshold resistance value, wherein the threshold resistance setting step (S) and the resistance measuring step (S) include measuring a resistance using a microresistance measuring instrument having a resolution of nanoohm to microohm units. The welding defect inspection method of the present invention shows excellent detection power for the welding defect by a weak welding.