公开(公告)号：US20180053924A1

公开(公告)日：2018-02-22

申请号：US15795875

申请日：2017-10-27

Applicant: SANYO ELECTRIC CO., LTD.

Inventor： Keisuke SHIMIZU ,  Masato FUJIKAWA ,  Tomohiko YOKOYAMA ,  Kyosuke MIYATA ,  Koki INOUE

IPC: H01M2/12 ,  H01M2/16 ,  H01M2/04

CPC classification number: H01M2/1241 ,  H01M2/022 ,  H01M2/0408 ,  H01M2/0413 ,  H01M2/046 ,  H01M2/0478 ,  H01M2/1229 ,  H01M2/1264 ,  H01M2/127 ,  H01M2/1282 ,  H01M2/1294 ,  H01M2/1673 ,  H01M2002/0297 ,  H01M2200/10 ,  H01M2200/20

Abstract: The battery is sealed by a sealing member including a safety valve for exhausting the gas generated in the battery to the outside of the battery when the pressure in the battery is increased. A part of the sealing member is formed of a member having a melting point lower than that of high-temperature gas generated in the abnormal time and having a ratio of an area of an opening of the battery case to an area of a gas exhaust hole is 3.0×10−5 or more and 9.1×10−3 or less.