Lg Chem, Ltd

Lg Energy Solution, Ltd.

Ki Eun Sung

Jae Hong Kim

Dong Hyeuk Park

Sung Chul Park

Dae Won Lee

Jeong Ki Kim

Hyun Jin Jeon

Jun Wan Kim

Hak Sik Lee

Jin Soo Lee

Bu Gon Shin

Ki Woong Kim

Sang Wook Kim

Chang Bum Ahn

Hyun Tae Kim

Tae Su Kim

Dae Han Seo

Jin Ho Ban

Ki Hong Min

In Gu An

Dong Hee Sul

Hyoung Sik Choi

Tai Joon Seo

Jeoung Soo Kim

Jun Hyeak Huh

Seung Hyun Lim

Sang Ik Lee

Young Min Yuk

The present technology relates to an electrode manufacturing method, an electrode manufactured by the method, and a secondary battery comprising same, the electrode manufacturing method comprising a cleaning step performed by laser irradiation, in lines corresponding to each other in a direction perpendicular to an electrode current collector, onto a top-coated electrode mixture layer and a back-coated electrode mixture layer of the electrode current collector, and may prevent a mismatch of the electrode mixture layers and may significantly reduce the degree of sliding occurrence at the boundary region.

Electrode manufacturing method comprising cleaning step using laser, electrode manufactured by method, and secondary battery comprising same

The present invention relates to a method for quantifying and diagnosing the quality of manufacturing equipment, that is, to a quantitative diagnostic method for the quality of manufacturing equipment. It is possible to quantify the quality of manufacturing equipment having a plurality of production elements and diagnose same in a single attempt.

Quantitative diagnostic method for quality of manufacturing equipment

A method of preparing an electrode for an electrode assembly having a structure in which electrodes are laminated, including:

Method of preparing electrodes having uniform quality and electrode assembly preparation method including the same

The present invention discloses a method of manufacturing an electrode for a secondary battery by using a single process to notch and cut a unit electrode from an electrode sheet. The method for manufacturing electrodes for a secondary battery includes supplying an electrode sheet in a moving direction (MD), wherein the electrode sheet has a plurality of coated portions and uncoated portions alternately arranged along the MD, wherein each coated portion has an electrode active material, and each uncoated portion does not have an electrode active material; and cutting the uncoated portions to form the plurality of unit electrodes.

Method for manufacturing secondary battery electrode, and secondary battery electrode manufactured thereby

Disclosed herein is a method of sealing a side portion of a pouch-shaped battery including an electrode current collector and a pouch-shaped battery case, the method including bending a lower case and an upper case connected to the lower case such that the upper case faces the lower case and the electrode current collector is disposed in the lower case, the lower case and the upper case being connected to one another at a bent portion of the pouch-shaped battery case, a primary sealing step of sealing the lower end part of the side portion of the pouch-shaped battery case adjacent to the bent portion of the pouch-shaped battery case, and a secondary sealing step of sealing the entirety of the side portion of the pouch-shaped battery case.

Method of sealing side portion of pouch-shaped battery including two-step sealing process

The present invention relates to a lithium secondary battery, and more specifically to a lithium secondary battery having a multi-directional lead-tab structure. The lithium secondary battery of the present invention includes: an electrode assembly which is formed by alternately laminating an electrode plate having a current collector, an active material, and a tab, and an isolation layer; a lead which is electrically connected to the tab; and a battery case, wherein the lead is divided into an anode lead and a cathode lead, and at least two or more anode leads and cathode leads are provided. The battery of the present invention uses the same lead-tab size as the prior art and is suitable for use with high current.

Cathode cutting device using laser

Growing community of inventors

Sejong, South Korea

Ki Eun Sung