US 11,695,177 B2
Apparatus and method of folding pouch case of battery cell
Joo Hyung Kim, Daejeon (KR); Hyung Joon Kim, Daejeon (KR); Gil Yong Choi, Daejeon (KR); and Poo Reum Oh, Daejeon (KR)
Assigned to SK On Co., Ltd., Seoul (KR)
Filed by SK On Co., Ltd., Seoul (KR)
Filed on Sep. 28, 2020, as Appl. No. 17/34,940.
Claims priority of application No. 10-2019-0121131 (KR), filed on Sep. 30, 2019; and application No. 10-2020-0122800 (KR), filed on Sep. 23, 2020.
Prior Publication US 2021/0098751 A1, Apr. 1, 2021
Int. Cl. H01M 50/10 (2021.01); H01M 10/04 (2006.01)
CPC H01M 50/10 (2021.01) [H01M 10/0413 (2013.01)] 12 Claims
OG exemplary drawing
 
1. 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.