Cap assembly of novel structure and cylindrical battery employed with the same
US8968898B2 · kind B2 · utility
9Cited by
2References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 27, 2013 |
| Grant date | Mar 3, 2015 |
| Priority date | — |
| Expiry date | Mar 27, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed herein is a cap assembly disposed at an open upper end of a cylindrical container of a battery in which an electrode assembly (jelly roll) of a cathode/separator/anode structure is mounted in the cylindrical container, wherein an electrode lead of the jelly roll is electrically connected to the lower end of a safety vent having notches, which are ruptured to discharge high pressure gas when high pressure is generated in the battery, and a safety element to interrupt current at a predetermined temperature is provided between the safety vent and the electrode lead.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.