Battery equipped with opening-sealing device
US5156930A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 27, 1990 |
| Grant date | Oct 20, 1992 |
| Priority date | — |
| Expiry date | Aug 27, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A battery equipped with an opening-sealing device for sealing an opening of a battery case. The opening-sealing device has a dish-like sealing plate having a downwardly protruding portion with a valve through-hole, a valve provided on the dish-like sealing plate so as to cover the valve through-hole, and a terminal cap provided on the valve having a cutter protruded downwardly toward the valve. The valve and terminal cap are firmly held by the dish-like sealing plate with a circumferential portion of the dish-like sealing plate being bent inwardly to the valve and the terminal cap. The valve has a three-layer construction comprising a metallic thin plate, a non-adhesion type resin film, and a heat-adhesion type resin film. The non-adhesion type resin film is provided on one surface of the metallic thin plate so as to face the terminal cap and the heat-adhesion type resin film is provided on the other surface of the metallic thin plate so as to face the dish-like sealing plate and be adhered to the dish-like sealing plate by heating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.