Pouch-shaped battery cell including electrode lead capable of maintaining uniform internal pressure and battery pack including the same
AssigneeLG Energy Solution, Ltd.
InventorsKee Bum Kim, Sei Woon Oh, Ye Jin Nam, Dong Hee Kim
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Abstract
The present invention relates to a pouch-shaped battery cell including a battery case made of a laminate sheet, an electrode assembly received in the battery case, the electrode assembly having an electrode tab protruding therefrom, an electrode lead electrically connected to the electrode tab, the electrode lead extending outwards from the battery case, and a gas discharge portion located in the electrode lead, wherein it is possible to prevent the internal pressure of the pouch-shaped battery cell from being increased to a predetermined level or more.
Claims10
A pouch-shaped battery cell comprising:
- a battery case made of a laminate sheet;
- an electrode assembly received in the battery case, the electrode assembly having an electrode tab protruding therefrom;
- an electrode lead electrically connected to the electrode tab, the electrode lead extending outwards from the battery case;
- and
- a gas discharge portion extending within the electrode lead,
- wherein the gas discharge portion is configured to block movement of gas when an internal pressure of the pouch-shaped battery cell is equal to or less than an external pressure at an outside of the pouch-shaped battery cell, and to discharge gas in the pouch-shaped battery cell when the internal pressure of the pouch-shaped battery cell is greater than the external pressure, and without a separate structure configured to close the gas discharge portion.
Dependencies are inferred from the claim text.