Apparatus and method of folding pouch case of battery cell
AssigneeSK On Co., Ltd.
InventorsJoo Hyung Kim, Hyung Joon Kim, Gil Yong Choi, Poo Reum Oh
Life of this patent
Estimating the term…
Abstract
The present invention relates to an apparatus and a method of folding a pouch case of a battery cell, and more particularly, to an apparatus and a method of folding a pouch case of a battery cell capable of preventing a meandering in a folding process and reducing non-uniformity of a folding amount by forming a pre-folding line on a pouch wing and folding the pouch wing on the basis of the pre-folding line.
Claims12
An apparatus of folding a pouch case including a pouch body in which an electrode assembly is accommodated and a pouch wing extending from the pouch body, comprising:
- a line forming unit forming a pre-folding line in a form in which one surface is recessed at a predetermined depth and the other surface protrudes downward along a length direction of the pouch wing on the pouch wing;
- and
- a folding unit arranged on a path through which the pouch case is transported and folding the pouch wing on which the pre-folding line is formed, on the basis of the pre-folding line,
- the line forming unit includes an upper pressing surface and a lower pressing surface that compress the pouch wing, a protruding portion protruding downward and extending to be elongated in the length direction of the pouch wing is formed on the upper pressing surface, and an avoiding portion depressed downward so as to correspond to the protruding portion of the upper pressing surface is formed in the lower pressing surface, and
- wherein the folding unit includes a plurality of unit rollers, at least one of the plurality of unit rollers includes an upper roller and a lower roller, and an accommodating groove, in which a portion protruding downward of the pre-folding line is accommodated, is formed in the lower roller.
A method of folding a pouch case including a pouch body in which an electrode assembly is accommodated and a pouch wing extending from the pouch body, comprising:
- forming a pre-folding line recessed at a predetermined depth along a length direction of the pouch wing on the pouch wing;
- and
- folding the pouch wing on which the pre-folding line is formed, on the basis of the pre-folding line,
- wherein the forming of the pre-folding line includes forming a first pre-folding line on the pouch wing and forming a second pre-folding line on the pouch wing on which the first pre-folding line is formed,
- the folding of the pouch wing includes folding the pouch wing on which the first pre-folding line is formed, by 90°, folding the pouch wing folded by 90° by 180°, and additionally folding the pouch wing folded by 180° by 90°,
- the first pre-folding line is formed on the pouch wing,
- the pouch wing on which the first pre-folding line is formed is folded by 90°,
- the pouch wing folded by 90° is folded by 180°,
- the second pre-folding line is formed on the pouch wing folded by 180°, and
- the pouch wing on which the second pre-folding line is formed is additionally folded by 90°, and
- wherein in the forming of the second pre-folding line on the pouch wing folded by 180°, compression of a power wing folded portion formed by folding the pouch wing by 180° is simultaneously performed.
Dependencies are inferred from the claim text.