POUCH-TYPE BATTERY CELL

A pouch-type battery cell includes an electrode assembly, a pouch having at least one electrode accommodation portion accommodating the electrode assembly therein and a sealing portion for sealing the electrode assembly, and electrode leads electrically connected to the electrode assembly and exposed externally of the pouch through the sealing portion, wherein the electrode accommodation portion includes a body portion of which a width is greater than a height thereof, and an extension portion extending from a central portion of the body portion in a width direction to one side and having a width narrower than the width of the body portion, the electrode leads are disposed outside the extension portion in the width direction, and an end of the electrode leads has a height lower than an outer portion of the pouch.