Cap assembly and secondary battery including the same
US10128477B2 · kind B2 · utility
4Cited by
1References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 30, 2014 |
| Grant date | Nov 13, 2018 |
| Priority date | — |
| Expiry date | Jul 9, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A cap assembly includes a current interrupt portion; a cap-up electrically connected with the current interrupt portion; and a gasket fixing the current interrupt portion and the cap-up, wherein the current interrupt portion comprises a vent portion comprising a safety vent configured to fracture when a predetermined pressure is applied thereon, and a cap-down comprising at least one hole configured to allow gas to flow in a direction toward the cap-up; and wherein an overall area of the at least one hole is about 0.12% to about 1.61% of a cross-sectional area of the gasket based on an outer diameter of the gasket.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.