Center pin for electrochemical device
US8974937B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 22, 2007 |
| Grant date | Mar 10, 2015 |
| Priority date | — |
| Expiry date | Jan 24, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed is the structure of a center pin inserted into the winding center of a winding-type electrode assembly of an electrochemical device, which has a case containing the winding-type electrode assembly. The center pin can be manufactured through a simple process and can secure the safety of an electrochemical device when physical impact (e.g. squeezing, shock) is applied from the outside or when the internal temperature rises. The center pin is manufactured by winding a planar substrate, which has at least two protrusions formed in an embossing type or which has at least two scores formed in a predetermined shape, into a tubular shape.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.