Battery coil construction
US4332867A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 7, 1980 |
| Grant date | Jun 1, 1982 |
| Priority date | — |
| Expiry date | Nov 7, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electrochemical cell utilizes a coil assembly formed by spirally winding negative and positive plates together with at least one separator therebetween. Each of the positive and negative plates is constituted by a main portion containing battery active material and an edge portion free of the active material. In the coil assembly, the edge portions of the respective plates protrude outwardly beyond the opposite edges of the separator and positioned on respective sides of the coil assembly. Positive and negative current collectors are made of a holeless nickel-plated steel sheet and welded to the edge portions of the respective plates by means of a plurality of welds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.