公开(公告)号：US20210057684A1

公开(公告)日：2021-02-25

申请号：US17045212

申请日：2019-04-03

Applicant: SANYO ELECTRIC CO., LTD. ,  PANASONIC CORPORATION

Inventor： Oose OKUTANI ,  Kyosuke MIYATA ,  Shinya GESHI

IPC: H01M2/08 ,  H01M2/04

Abstract: A battery including: a battery can having a cylindrical portion, a bottom wall closing one end of the cylindrical portion, and an open rim continuing to the other end of the cylindrical portion; an electrode body housed in the cylindrical portion; and a sealing body fixed to the open rim so as to seal an opening defined by the open rim. The sealing body includes a sealing plate and a gasket disposed at a peripheral portion of the sealing plate. The gasket is compressed between an end surface of the peripheral portion and the open rim, in a radial direction of the opening.

公开(公告)号：US20150364734A1

公开(公告)日：2015-12-17

申请号：US14763175

申请日：2014-01-30

Applicant: SANYO ELECTRIC CO., LTD.

Inventor： Naoto KUNOIKE ,  Kyosuke MIYATA

IPC: H01M2/12 ,  H01M10/0525 ,  H01M4/525 ,  H01M2/04

CPC classification number: H01M2/1241 ,  H01M2/0413 ,  H01M2/043 ,  H01M2/345 ,  H01M4/525 ,  H01M10/0525 ,  H01M2200/20

Abstract: A sealed battery including a bottomed cylindrical outer can having an opening, the opening and a sealing body being crimp-sealed with an insulating gasket interposed therebetween, is disclosed. The sealing body includes a first plate-shaped member and a second plate-shaped member bonded to a surface of the first plate-shaped member, the surface facing the outside of the battery. At least the first plate-shaped member is crimp-sealed at an outer periphery thereof, and the crimp-sealed plate-shaped member has a thin portion on at least one surface thereof, the thin portion serving as a starting point of deformation of the sealing body when a battery internal pressure increases. When the battery internal pressure increases, the sealing body is deformed so that a gap is formed between the insulating gasket and the sealing body and gas in the outer can is vented to the outside of the outer can.

Abstract translation: 公开了一种密封电池，其包括具有开口的有底圆柱形外罐，所述开口和密封体用插入其间的绝缘垫圈压接。 密封体包括第一板状构件和接合到第一板状构件的表面的第二板状构件，该表面面向电池的外部。 至少第一板状构件在其外周被卷曲密封，并且压接密封的板状构件在其至少一个表面上具有薄的部分，薄部分用作变形的起始点 电池内部压力增加时密封体。 当电池内部压力增加时，密封体变形，从而在绝缘垫圈和密封体之间形成间隙，外壳中的气体排出到外罐的外部。

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.