Title:
【発明の名称】放出防止通気孔を備えた低プロファイルのシールアセンブリーを有する電気化学電池
Document Type and Number:
Japanese Patent JP2002543565
Kind Code:
A
Abstract:
A low profile seal assembly for sealing the open end of a container of an electrochemical cell to provide controlled pressure venting, while effectively preventing resealing of the open end of the cell. An electrochemical cell has a container with a closed bottom and an open top end, positive and negative electrodes disposed in the container, a separator disposed between the positive and negative electrodes, and an electrolyte disposed in the container. The cell further includes a seal member disposed in the open top end of the container for closing the open top end of the container. The seal member has a stress concentrator formed in the seal member for providing pressure relief to vent high pressure gases. A cover is disposed in the open end of the container and substantially covers the seal member, and the cover has at least one opening formed therein. A standoff member is located between a top surface of the seal member and a bottom surface of the cover for keeping at least a portion of the seal member at a distance from the cover to prevent resealing of the seal member when the seal member vents.
Inventors:
Janmy robert em
Application Number:
JP2000614523A
Publication Date:
December 17, 2002
Filing Date:
April 25, 2000
Export Citation:
Assignee:
Everlady Battery Company, Inc.
International Classes:
H01M2/04; H01M2/12; H01M6/08; H01M2/08; (IPC1-7): H01M2/12; H01M2/08; H01M6/08
Attorney, Agent or Firm:
Minoru Nakamura (9 outside)