ELECTRODE ASSEMBLY, CYLINDRICAL BATTERY CELL, AND BATTERY PACK AND VEHICLE COMPRISING SAME

WIPO Patent Application WO/2023/063808

A1

Disclosed are an electrode assembly, a cylindrical battery cell, and a battery pack and a vehicle comprising same. The electrode assembly is a jelly roll type electrode assembly having a structure in which a first electrode plate and a second electrode plate each having a sheet shape and a separator interposed therebetween are wound in one direction, wherein at least one of the first electrode plate and the second electrode plate includes an uncoated portion having a long-side end that is not coated with an active material layer. At least a portion of the uncoated portion itself is used as an electrode tab. In addition, the uncoated portion includes a core-side uncoated portion adjacent to a core of the electrode assembly, an outer circumference-side uncoated portion adjacent to the outer circumferential surface of the electrode assembly; and a middle uncoated portion interposed between the core-side uncoated portion and the outer circumference-side uncoated portion. Preferably, at least one of the core-side uncoated portion and the outer circumference-side uncoated portion has a relatively smaller height in the winding axis direction than the middle uncoated portion.

LEE MYUNG-AN (KR)
RYU DUK-HYUN (KR)
WOO JAE-YOUNG (KR)

PCT/KR2022/015768

April 20, 2023

October 17, 2022

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LG ENERGY SOLUTION LTD (KR)

H01M50/533; H01M10/04; H01M50/107; H01M50/167; H01M50/213; H01M50/446; H01M50/449; H01M50/538

KR20200041625A	2020-04-22
KR20050121914A	2005-12-28
JP2001028274A	2001-01-30
KR20160009406A	2016-01-26
KR20180116156A	2018-10-24
KR20210137939A	2021-11-18
KR20210175085A
KR20220089239A	2022-06-28

PHIL & ONZI INT'L PATENT & LAW FIRM (KR)

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