Lg Energy Solution, Ltd.

Lg Chem, Ltd

Jin Hak Kong

Kyu Hyun Choi

Dong Yeon Kim

Sang Youn Park

Sang Kyun Lee

Yong Seok Choi

Min Soo Park

Young Bum Cho

Seung Joon Kim

Eui Jin Hong

Jung Been You

Jae Uk Ryu

Min Ho Kwon

Gil Sang Son

Ja Eon Gu

Soon Kim

The present invention relates to a welding apparatus including an electrode assembly configured such that a plurality of positive electrodes and a plurality of negative electrodes are stacked in the state in which separators are interposed therebetween, guides configured to reduce tensile force of positive electrode tabs and negative electrode tabs protruding from the electrode assembly, an anvil configured to allow the electrode tabs to be disposed thereon, and a horn configured to apply ultrasonic waves to the electrode tabs disposed on the anvil, a welding method using the same, and an electrode assembly manufactured by the welding method.

Welding apparatus, welding method using the same, and electrode assembly manufactured by the welding method

The present invention relates to a battery module comprising a particulate metal-dispersed thermal conductive resin, and a method and a system for inspecting same. The present invention can effectively inspect the degree of dispersion in the resin in a nondestructive manner and can detect a defect.

Battery module comprising metal particle-dispersed thermal conductive resin and method and system for inspecting same

A current interrupt structure in which a double rupture structure, which has a rupture groove with a triangular shape and a rupture line with an extending shape of a triangular groove, such that when a swelling phenomenon occurs, stress is concentrated on the rupture line by the rupture groove, which enables accurate and smooth rupture and current flow interruption.

Current blocking structure applied to pouch type secondary battery

An apparatus for manufacturing a secondary battery includes: a recess induction part configured to allow a folding part folded in a battery case of a secondary battery to be recessed inward so as to provide a recess part when the battery case of the secondary battery is folded; a first guide, of which one side of one end is recessed to define a concave space, wherein, when the battery case of the secondary battery is folded, the one end is configured to be inserted into the battery case to push the folding part to an outside so that the recess induction part is configured to be inserted into the concave space; and a second guide configured to hold a sealing part of the battery case so as to fix the battery case.

Apparatus and method for manufacturing secondary battery

Disclosed herein is a method of manufacturing an electrode for a secondary battery, including: a process of continuously forming two or more slurry coated parts on one surface or both surfaces of metal foil in a second direction which is a longitudinal direction of the metal foil so that a non-coated part which an electrode slurry is not coated is positioned between the slurry coated parts coated with the electrode slurry including an electrode active material in a first direction which is a transverse direction of the metal foil; a process of forming mixture coated parts by drying the slurry coated parts and rolling by a roller; and a process of forming electrode strips by slitting the non-coated part in the second direction, wherein before continuously forming the slurry coated parts, while continuously forming the slurry coated parts, or between continuously forming the slurry coated parts and forming the mixture coated parts, the method further includes a process of forming non-continuous linear slits in the non-coated part of the metal foil in the second direction.

Method of manufacturing electrode for secondary battery comprising pre-slitting process

The present disclosure provides a device for cleaning a protective film to be attached to an outer surface of a laminate during a lamination process of heating and pressing the laminate of electrodes and a separator to produce an electrode assembly of a battery cell, including a feed roll configured to supply the protective film, at least one guide roll configured to guide a progress of the protective film supplied from the feed roll, a cleaning roll located between the feed roll and a winding roll and configured to remove foreign substances remaining on the protective film supplied from the feed roll, and the winding roll configured to wind the protective film from which foreign substances have been removed by the cleaning roll, wherein a nano thin film is formed on an outer surface of the cleaning roll to adsorb and remove the foreign substances remaining on the protective film.

Device comprising cleaning roll and for cleaning protective film for preparing battery cell

Growing community of inventors

Seoul, South Korea

Jin Hak Kong