Prismatic storage battery or cell with coiled winding
US6190794A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 25, 1999 |
| Grant date | Feb 20, 2001 |
| Priority date | — |
| Expiry date | Mar 25, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Prismatic battery including a metal container (1) within which is arranged a non circular spiral winding (2) of at least one composite strip (10) including an anode (2a) and a cathode (2c), separated by porous separators (2b) impregnated by an electrolyte, said container (1) being sealed at its upper portion by a cover (4). The spiral winding (2) is formed around a rigid spool (20) including an upper flange (21), having the dimensions of the opening of the cavity (16), and a lower flange (22), having the inner dimensions of the bottom (15), said flanges being joined by a central neck (24) and, on either side, by two lateral necks (23, 25), said necks (23, 24, 25) delimiting two openings (26a, 26c) in the median portion of the spool (20) and a free space (27) at its periphery to accommodate the winding (2).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.