Battery cell with folded multilayer gas discharge unit and battery module including the same

Abstract

A battery cell 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. A gas discharge unit can be inserted into the sealing portion and fused together with the sealing portion. The gas discharge unit includes a first layer and a second layer in a folded structure about a first border line. The gas discharge unit is open toward the inside of the battery case, and the first layer forms an outer surface of the gas discharge unit. The first layer and the sealing portion being in contact with each other.

Dependencies are inferred from the claim text.