CYLINDRICAL RECHARGEABLE BATTERY WITH IMPROVED STABILITY
摘要
Provided is a cylindrical rechargeable battery in which an electrode assembly produced by the winding of an anode/separating film/cathode and an electrolytic solution are housed inside a cylindrical can, wherein a cap assembly mounted on the open upper part of the cylindrical can comprises: a safety vent formed with a predetermined notch so as to be ruptured by high-pressure gas in the battery; a current-blocking member which is coupled by welding to the lower edge of the safety vent and blocks current when the internal pressure of the battery rises; and a gasket for the current-blocking member surrounding the outer circumferential surface of the current-blocking member, and wherein the current-blocking member comprises two or more through holes for discharging gas, and the through holes are formed with a size such that their overall surface area is from 20 to 50% of the overall surface area of the current-blocking member.
申请公布号
WO2011019237(A2)
申请公布日期
2011.02.17
申请号
WO2010KR05338
申请日期
2010.08.13
申请人
LG CHEM, LTD.;KIM, JI YOUNG;KIM, JUNGJIN;LEE, KWAN SOO;KIM, SUNGJONG;KIM, SOORYOUNG;KU, CHAHUN;RYU, DUKHYUN;JUNG, BYUNG KYU
发明人
KIM, JI YOUNG;KIM, JUNGJIN;LEE, KWAN SOO;KIM, SUNGJONG;KIM, SOORYOUNG;KU, CHAHUN;RYU, DUKHYUN;JUNG, BYUNG KYU