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Patent Searching and Data


Title:
SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2019/212164
Kind Code:
A1
Abstract:
The present invention relates to a secondary battery capable of improving insulation safety. An embodiment provides a secondary battery comprising: an electrode assembly; a case for accommodating the electrode assembly; and a cap assembly coupled to the upper part of the case, wherein the cap assembly comprises: a cap-up; a safety vent installed below the cap-up and having a vent extension part extending above the cap-up to surround the edge of the cap-up; and an insulation washer attached onto the vent extension part and the cap-up, wherein a welding zone having a thickness smaller than that of the surrounding part thereof is formed in the vent extension part.

Inventors:
LEE, Jong Ha (150-20, Gongse-ro,Giheung-Gu, Yongin-Si, Gyeonggi-do, 17084, KR)
SEO, Geun Ho (150-20, Gongse-ro,Giheung-Gu, Yongin-Si, Gyeonggi-do, 17084, KR)
KIM, Shin Jung (150-20, Gongse-ro,Giheung-Gu, Yongin-Si, Gyeonggi-do, 17084, KR)
Application Number:
KR2019/004491
Publication Date:
November 07, 2019
Filing Date:
April 15, 2019
Export Citation:
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Assignee:
SAMSUNG SDI CO., LTD. (150-20, Gongse-ro,Giheung-Gu, Yongin-Si, Gyeonggi-do, 17084, KR)
International Classes:
H01M2/12; B23K26/21; H01M2/06; H01M2/34; B23K101/36
Attorney, Agent or Firm:
SUNGAM SUH INTERNATIONAL PATENT & LAW FIRM (9th Floor, 114 Yeoksam-ro,,Gangnam-Gu, Seoul, 06252, KR)
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