VENTING DEVICE AND PRISMATIC SECONDARY BATTERY PROVIDED WITH SAME

WIPO Patent Application WO/2023/204538

A1

The disclosed invention relates to a venting device, characterized by comprising: a fixed member which is provided with a perforated hollow body, and is provided with a first stepped portion on an inner circumferential surface of an upper portion of the body; a movable member which is inserted into and coupled to the interior of the fixed member, is provided with a plurality of venting holes, and is provided with a second stepped portion facing the first stepped portion on a lower outer circumferential surface thereof; and a gap maintaining member which applies a repulsive force between the fixed member and the movable member, wherein, with respect to the fixed member, the movable member may move between a first position maintained by the repulsive force applied by the gap maintaining member, and a second position when an external force exceeding the repulsive force is applied to the fixed member, and wherein the number of venting holes in the movable member communicating with the outside is different at the first position and the second position.

LEE YONG HO (KR)
LEE JIN KYU (KR)
YOON DOO HAN (KR)

PCT/KR2023/005132

October 26, 2023

April 14, 2023

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LG ENERGY SOLUTION LTD (KR)

H01M50/317; H01M50/15; H01M50/184; H01M50/211; H01M50/333; H01M50/342

KR20200013989A	2020-02-10
KR101182284B1	2012-09-12
KR20200032314A	2020-03-26
KR20140066998A	2014-06-03
KR20220043646A	2022-04-05
KR20220047703A	2022-04-19
US20170187020A1	2017-06-29

KIM, Hong Gyun (KR)

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