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US 12,489,173 B2Granted
Secondary battery
AssigneeLG Energy Solution, Ltd.
InventorsDae-Woong Song, Sang-Hun Kim, Min-Hyeong Kang, Hyung-Kyun Yu, Hun-Hee Lim, Soo-Ji Hwang
Life of this patent
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Abstract
The secondary battery includes an electrode assembly to which an electrode lead is attached; a case configured to receive the electrode assembly therein; a lead film configured to surround a part of an outer surface of the electrode lead and interposed between the electrode lead and the case; a vent region formed in at least a part of the case; and a vent member inserted into the vent region and configured to contain linear low-density polyethylene having a comonomer with a carbon number of 6 or more.
Claims22
A secondary battery, comprising:
- an electrode assembly;
- an electrode lead attached to the electrode assembly;
- a case configured to receive the electrode assembly therein;
- a lead film configured to surround a part of an outer surface of the electrode lead, the lead film being interposed between the electrode lead and the case;
- a vent region formed in at least a part of the case;
- and
- a vent member inserted into the vent region, wherein the vent member contains linear low-density polyethylene having a comonomer with a carbon number of 6 or more,
- wherein a content of the comonomer with the carbon number of 6 or more is from 5 weight % to 15 weight % based on 100 weight % of the linear low-density polyethylene, and
- wherein the vent member has a maximum sealing strength of 6 kgf/15 mm or more at room temperature to 60° C.
6 more elements
Dependencies are inferred from the claim text.