Explosion-proof device including battery cover with rupture film positioned in valve seat for use in power batteries
US8440335B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 18, 2011 |
| Grant date | May 14, 2013 |
| Priority date | — |
| Expiry date | Sep 4, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An explosion-proof device for use in power batteries includes a battery cover defining an explosion-proof hole, a valve seat securely mounted in the explosion-proof hole and hermetically sealing the battery cover, and a rupture film positioned in the valve seat and hermetically sealing the explosion-proof hole. The rupture film is insulatively isolated from the valve seat via an insulative cushion enclosing the rupture film, or an insulative layer formed on the rupture film. In the explosion-proof device of the prevent invention, the rupture film is insulatively isolated from the valve seat, which can prevent the rupture film from being electrochemically corroded.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.