Lg Chem, Ltd

Lg Energy Solution, Ltd.

Konkuk University Industrial Cooperation Corp

Yeo Min Yoon

Joo Hwan Sung

Je Jun Lee

Hyoung Kwon Kim

Jae Woong Kim

Pil Kyu Park

Bum Young Jung

Han Gab Song

Jung Koo Kang

Ji Hyun Choi

Ki Jae Kim

Ik Jong Lee

Jeong Ho Ha

Kyungwook Cho

Jaewoong Jung

Kyu Bin Lee

Yustian Suharto

Yong Keon Ahn

The present invention relates to an electric resistance welder that includes a compressor, a welding holder, and a welding rod, wherein air compressed by the compressor may be introduced into the welding rod through the welding holder and is then discharged through air outlets formed in the welding rod.

Electric resistance welder and method manufacturing battery using the same

The present invention relates to an extinguishing composition and comprises an extinguishing material and a capsule containing the extinguishing material, and the extinguishing material comprises calcium bromide (CaBr2).

Extinguishing composition, method for preparing the same, secondary battery and battery pack

The present disclosure provides a method that includes forming a tab arrangement by vertically arranging the electrode tabs whereby at least parts of the electrode tabs overlap each other; irradiating light to at least two side surfaces among side surfaces of the tab arrangement excluding surfaces on which the electrode tabs overlap and surfaces facing the overlapped surfaces; scanning a planar shape of a step on which the electrode tabs do not overlap each other using light reflected from an end portion of each of the electrode tabs; scanning only an overlapped portion of the electrode tabs excluding the step based on the scanned result; setting a welding range within the overlapped portion; and performing welding only within the welding range.

Welding method capable of improving welding reliability by precisely setting welding portions of the electrode taps

The present invention relates to a cap assembly formed of a composite of cap assembly ceramic for the cylindrical battery and mounted on a top end portion of the cylindrical secondary battery in which an electrode assembly is placed in a cylindrical can, which includes a safety vent having a predetermined notch configured to be ruptured by high pressure gas generated in the battery, a current interrupt device coupled to a lower end of the safety vent and blocking a current when an internal pressure of the battery rises, and a gasket for the current interrupt device surrounding an outer circumferential surface of the current interrupt device, wherein the gasket for the current interrupt device comprises a polymer resin having a melting point of 250&#xb0; C. or more and a heat deflection temperature (HDT) of 200&#xb0; C. or more, and a cylindrical secondary battery including the same.

Cap assembly having improved stability and cylindrical secondary battery including the same

Growing community of inventors

Daejeon, South Korea

Yeo Min Yoon