Lg Chem, Ltd

Lg Energy Solution, Ltd.

Eun-Suk Park

Je-Young Kim

Yo-Han Kwon

Hye-Ran Jung

Hyung-Kyun Yu

Sang-Hun Kim

Soo-Ji Hwang

Min-Hyeong Kang

Hun-Hee Lim

Se-Woo Yang

Seung-Hyun Chung

Disclosed is a battery cell, which includes a battery case having an accommodation portion in which an electrode assembly is mounted, and a sealing portion formed by sealing an outer periphery thereof by heat fusion; an electrode lead electrically connected to an electrode tab included in the electrode assembly and protruding out of the battery case via the sealing portion; and a lead film located at a portion corresponding to the sealing portion in at least one of an upper portion and a lower portion of the electrode lead, wherein the lead film has a dented portion recessed toward an inside of the battery case, and the dented portion is opened toward an outside of the battery case.

Battery cell and battery module including the same

The present invention relates to a cable-type secondary battery which can be freely transformed, and more specifically, to a cable-type secondary battery having improved flexibility of the battery by preventing wrinkling, which may occur on a thin metal layer included in packaging. According to the present invention, the flexibility of an electrode can be drastically improved by introducing a support layer on at least one surface of a sheet-type external electrode, and the flexibility of the battery can be improved by forming the support layer, which is the outermost layer of the external electrode, and a polymer resin layer inside the packaging from the same material, and by preventing winkling on the thin metal layer included in the packaging by mutually coupling the support layer and the polymer resin layer.

Cable-type secondary battery

Growing community of inventors

Daejeon, South Korea

Eun-Suk Park