Secondary battery having a separator
US4652504A · kind A · utility
16Cited by
5References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 13, 1986 |
| Grant date | Mar 24, 1987 |
| Priority date | — |
| Expiry date | Jan 13, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A secondary battery prevents a localized formation of dendritic metal zinc during a charging and increases a current efficiency as far as possible. The secondary battery includes a negatively active material of a metallic ion, a positive electrode, a negative electrode and a separator having an metallic-ion-permeable sheet, a plurality of projections formed with a nonsymmetrical shape on opposite sides of the sheet and a diffusing means for diffusing a flow of zinc ion current flowing around the projection, and the diffusing means is provided in a vicinity of a connecting portion of the sheet and the projection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.