Lg Chem, Ltd

Doosan Heavy Industries & Construction Co., Ltd

Kyung Taek Kim

Dong Hyun Kim

Cha Hun Ku

Sung Jong Kim

Tae Kyu Kim

Kyung Jae Lee

Sang Hyun Koo

Eui Kyung Lee

The present invention relates to a method for manufacturing a secondary battery. The method comprises: a first process (S) of manufacturing an incomplete electrode assembly; a second process (S) of preparing a pattern member on which a patterned pressing protrusion is formed; a third process (S) of stacking the pattern member on an outer surface of the incomplete electrode assembly; a fourth process (S) of partially pressing the incomplete electrode assembly to pattern-bond an interface between the electrode and the separator and thereby to manufacture a complete electrode assembly; a fifth process (S) of accommodating the complete electrode assembly into a case; a sixth process (S) of injecting an electrolyte to impregnate the electrolyte into the electrode assembly; a seventh process (S) of sealing an unsealed surface to manufacture a secondary battery; and an eighth process (S) of heating and pressing an entire surface of the secondary battery.

Method for manufacturing secondary battery and method for manufacturing electrode assembly

A lamination device of the present invention includes a pattern roller part embodying a pattern on an electrode assembly, wherein the pattern roller part includes a rotation roller disposed on a surface of the electrode assembly to emit heat and a pattern cover wound around an outer circumferential surface of the rotation roller and partially pressing the surface of the electrode assembly together with the heat transferred from the rotation roller to embody a pattern, and the pattern cover includes a pattern film wound around the outer circumferential surface of the rotation roller and a deformation member disposed on an inner surface of the pattern film to wind the pattern film around the outer circumferential surface of the rotation roller while being deformed by the heat transferred from the rotation roller.

Lamination device

The present invention relates to a method for manufacturing a secondary battery. The method comprises: a first process (S) of manufacturing an incomplete electrode assembly; a second process (S) of partially pressing the incomplete electrode assembly to manufacture a complete electrode assembly in which a bonding portion and a nonbonding portion coexist; a third process (S) of accommodating the complete electrode assembly into a case; a fourth process (S) of injecting an electrolyte through an opening of the case to impregnate the electrolyte into the electrode assembly; a fifth process (S) of sealing an unsealed surface in which the opening of the case is formed to manufacture a secondary battery; and a sixth process (S) of heating and pressing an entire surface of the secondary battery to bond the nonbonding portion of the interface between the electrode and the separator.

Growing community of inventors

Daejeon, South Korea

Kyung Taek Kim