Secondary battery and battery module including the same
AssigneeLG Energy Solution, Ltd.
InventorsHun-Hee Lim, Sang-Hun Kim, Min-Hyeong Kang, Hyung-Kyun Yu
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Abstract
Disclosed is a secondary battery including: an electrode assembly including electrode sheets and a separator interposed between the electrode sheets; a pouch-like battery casing in which the electrode assembly is received; an electrode lead connected to the electrode assembly and protruding out from the battery casing; and a lead film covering the electrode lead and interposed between the electrode lead and the battery casing, wherein the lead film includes an outer layer covering the electrode lead and an inner layer disposed inside of the outer layer, and the inner layer includes a material having a higher air permeability as compared to the outer layer.
Claims26
A secondary battery comprising:
- an electrode assembly comprising electrode sheets and a separator interposed between the electrode sheets;
- a battery casing in which the electrode assembly is received;
- an electrode lead connected to the electrode assembly and protruding out from the battery casing;
- and
- a lead film covering the electrode lead and interposed between the electrode lead and the battery casing,
- wherein the lead film comprises an outer layer covering the electrode lead and an inner layer disposed inside of the outer layer, and
- the inner layer comprises a material having a higher air permeability as compared to the outer layer.
Dependencies are inferred from the claim text.