Secondary battery
US7955730B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 18, 2006 |
| Grant date | Jun 7, 2011 |
| Priority date | — |
| Expiry date | Apr 25, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed is a cylindrical lithium secondary battery capable of improving the stability thereof against the external pressure, The cylindrical lithium secondary battery includes an electrode assembly and a core. The electrode assembly includes a first electrode sheet, a second electrode sheet and a separator interposed between the first and second electrode sheets, which are rolled together about an axis. The electrode assembly defines a space. The core has a tubular shape provided with a gap. The core includes at least one reinforcing structure extending in a direction extending along the axis. The core is inserted into the space of the electrode assembly. A housing receives the electrode assembly and core.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.