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Title: Electrochemical cell having improved pressure vent

Abstract

The electrochemical cell of the instant invention includes a case having a gas outlet, one or more positive electrodes positioned within the case, one or more negative electrodes positioned within the case electrode separators positioned between the positive and negative electrodes, electrolyte positioned within the case, and a pressure vent for releasing internal pressure occurring in the case to the surrounding atmosphere. The pressure vent is affixed to the case covering the gas outlet, the pressure vent includes a vent housing having a hollow interior area in gaseous communication with the surrounding atmosphere and the interior of the case via the gas outlet, a pressure release piston positioned within the hollow interior area, the pressure release piston sized to surround the gas outlet and having a seal groove configured to encapsulate all but one surface of a seal mounted within the seal groove, leaving the non-encapsulated surface of the seal exposed, and a compression spring positioned to urge the pressure release piston to compress the seal in the seal groove and block the gas outlet in the case.

Inventors:
 [1];  [2];  [3]
  1. (Pontiac, MI)
  2. (Troy, MI)
  3. (Waterford, MI)
Issue Date:
Research Org.:
Ovonic Battery Company, Inc. (Troy, MI)
OSTI Identifier:
868994
Patent Number(s):
5258242
Assignee:
Ovonic Battery Company, Inc. (Troy, MI) OSTI
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
electrochemical; cell; improved; pressure; instant; gas; outlet; positive; electrodes; positioned; negative; electrode; separators; electrolyte; releasing; internal; occurring; surrounding; atmosphere; affixed; covering; housing; hollow; interior; gaseous; communication; via; release; piston; sized; surround; seal; groove; configured; encapsulate; surface; mounted; leaving; non-encapsulated; exposed; compression; spring; urge; compress; block; hollow interior; positive electrodes; negative electrodes; gas outlet; positive electrode; negative electrode; electrochemical cell; seal mounted; surrounding atmosphere; internal pressure; compression spring; electrode separator; electrodes positioned; electrode separators; /429/

Citation Formats

Dean, Kevin, Holland, Arthur, and Fillmore, Donn. Electrochemical cell having improved pressure vent. United States: N. p., 1993. Web.
Dean, Kevin, Holland, Arthur, & Fillmore, Donn. Electrochemical cell having improved pressure vent. United States.
Dean, Kevin, Holland, Arthur, and Fillmore, Donn. Fri . "Electrochemical cell having improved pressure vent". United States. https://www.osti.gov/servlets/purl/868994.
@article{osti_868994,
title = {Electrochemical cell having improved pressure vent},
author = {Dean, Kevin and Holland, Arthur and Fillmore, Donn},
abstractNote = {The electrochemical cell of the instant invention includes a case having a gas outlet, one or more positive electrodes positioned within the case, one or more negative electrodes positioned within the case electrode separators positioned between the positive and negative electrodes, electrolyte positioned within the case, and a pressure vent for releasing internal pressure occurring in the case to the surrounding atmosphere. The pressure vent is affixed to the case covering the gas outlet, the pressure vent includes a vent housing having a hollow interior area in gaseous communication with the surrounding atmosphere and the interior of the case via the gas outlet, a pressure release piston positioned within the hollow interior area, the pressure release piston sized to surround the gas outlet and having a seal groove configured to encapsulate all but one surface of a seal mounted within the seal groove, leaving the non-encapsulated surface of the seal exposed, and a compression spring positioned to urge the pressure release piston to compress the seal in the seal groove and block the gas outlet in the case.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1993},
month = {1}
}

Patent:

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