Lg Energy Solution, Ltd.

Agency for Defense Development

Jin Seo Park

Sei Woon Oh

Soo Ji Hwang

Min Kyung Kim

Sun Hwak Woo

Ho Sub Lee

Nan Ji Yun

Dai Kyung Hyun

Jung Hwa Jung

Ye Jun Kang

Seung Hee Yang

Hyun Jung Na

A pouch type battery case includes: a first cup part and a second cup part, which are recessed with respect to a sealing part; and a bridge formed between the first cup part and the second cup part and having a constant width and height, wherein the first cup part includes: a first outer wall formed opposite the bridge; a second outer wall formed adjacent the bridge; and a first bottom portion connecting the first outer wall to the second outer wall, and the second cup part includes: a third outer wall formed adjacent the bridge; a fourth outer wall formed opposite the bridge; and a second bottom portion connecting the third outer wall to the fourth outer wall, wherein the fourth outer wall has a height greater than that of the first outer wall.

Pouch type battery case and pouch type secondary battery

A method of determining topographical interference with a guided missile is proposed. The method may include obtaining a pre-calculated expected trajectory of a guided missile. The method may also include extracting topographic elevations with respect to a topography corresponding to the pre-calculated expected trajectory from stored topographical information. The method may further include determining presence or absence of topographical interference with the guided missile based on bottom trajectory elevation values in the pre-calculated expected trajectory and topographic elevation values corresponding to the bottom trajectory elevation values. The pre-calculated expected trajectory may include top, bottom, left, and right trajectories with respect to a launch direction of the guided missile, calculated based on an error factor for the guided missile, and the error factor includes manufacturing error values with respect to at least one of a weight, center of gravity, a thrust, or a moment of inertia of the guided missile.

Method of determining topographical interference with guided missile and determination apparatus therefor

Disclosed is a method for manufacturing a secondary battery. According to the present invention, a problem of weakening durability of a pouch, which may occur in a process of forming cups having different depths in the pouch may be solved.

Method for manufacturing secondary battery, method for manufacturing pouch for secondary battery, and pouch for secondary battery

A punching system for an electrode base material is disclosed, in which the electrode base material coated with an active material on a surface of a collector is molded or cut in a predetermined shape. The punching system comprises: an unwinder on which the electrode base material in the form of a roll is mounted and around which the electrode base material is unwound; a punching device spaced a predetermined distance from the unwinder, the punching device being configured to mold or cut the electrode base material supplied from the unwinder in a predetermined shape; and a curl correcting device disposed between the unwinder and the punching device to inject or suction air onto a surface of the electrode base material while the electrode base material moves to the punching device so as to planarize the electrode base material. A punching method for an electrode base material is also disclosed.

Punching system for electrode base material and punching method

Growing community of inventors

Daejeon, South Korea

Jin Seo Park