公开(公告)号：US20180053974A1

公开(公告)日：2018-02-22

申请号：US15554311

申请日：2016-04-15

Applicant: LG CHEM, LTD.

Inventor： Je-Jun LEE ,  Hang-Soo SHIN ,  Do-Gyun KIM ,  Byoung-Gu LEE ,  Sang-Sok JUNG

IPC: H01M10/48 ,  H01M10/0525 ,  H01M10/42 ,  H01M2/04

CPC classification number: H01M10/488 ,  H01M2/04 ,  H01M2/043 ,  H01M2/0478 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/4228 ,  H01M2220/20 ,  H01M2220/30 ,  H01M2300/0017 ,  Y02T10/7011

Abstract: The present disclosure relates to a case for a secondary battery and a secondary battery having the same. More specifically, it relates to a case for a secondary battery having a washer for detecting leakage with a structure improved so as to check leakage of an electrolyte and a secondary battery having the same.A lithium ion secondary battery according to the present disclosure provides an effect of easily checking the leakage of an electrolyte with naked eyes through the color change of a washer when a trace amount of the electrolyte leaks.