Samsung Sdi Co., Inc.

Jeong Chull Ahn

Sang Hyun Kim

Sung Soo Park

Won Chull Han

Shin Gun Kang

Young Jin Park

Chang Wook Kim

Jae Hyuck Cha

Soo Youn Park

Yu Jin Han

Hiroshi Seino

The present invention relates to a secondary battery which includes a sheathing made of a material having an increased thermal conductivity and can thus have an improved safety. As an example, disclosed is a secondary battery comprising: an electrode assembly; and a sheath material which receives the electrode assembly and comprises a metal layer and a non-metal layer formed on the surface of the metal layer, wherein the thickness of the metal layer occupies 50% to 70% of the total thickness of the sheath material.

Secondary battery

A secondary battery including an electrode assembly including a negative electrode plate having a negative electrode tab, a positive electrode plate having a positive electrode tab, and a separator between the negative electrode plate and the positive electrode plate; a pouch accommodating the electrode assembly, the pouch having a sealing portion at an edge thereof that is sealed with the electrode assembly accommodated in the pouch; and a strip terminal, including a negative electrode lead electrically connected to the negative electrode tab, a positive electrode lead electrically connected to the positive electrode tab, and a tab film having one end coupled to the negative electrode lead and another end coupled to the positive electrode lead, the tab film insulating the negative electrode lead, the positive electrode lead, and the pouch from one another and including a through-hole passing therethrough between the one end and the other end.

Growing community of inventors

Yongin-si, South Korea

Jeong Chull Ahn