Safety vent device for electrochemical cells
US4698282A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 2, 1986 |
| Grant date | Oct 6, 1987 |
| Priority date | — |
| Expiry date | Jun 2, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a venting device for a sealed container, and more particularly to a safety venting device for a Lithium cell. The venting device is located on one of the two ends of a sealed container. The vent is comprised of a circular member which is recessed in the container end whereby it is concave with respect to the exterior of the container. Extending between the circular member and the container end are scored lines of weakness. As pressure increases in the container, the circular member deflects so as to develop stresses which become concentrated on the scored lines causing them to rupture at a predetermined pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.