Battery separator
US4414295A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 6, 1982 |
| Grant date | Nov 8, 1983 |
| Priority date | — |
| Expiry date | May 6, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A multi-layered gas permeable separator for lead-acid maintenance-free batteries, particularly for sealed gas recombining type rechargeable lead-acid batteries, is disclosed. The outer separator layers, adapted to be positioned against the opposite polarity plates of the battery, are composed of ultrafine fibers particularly glass fibers of relatively high fiber surface area. A third layer is interposed between the outer layers and is comprised of ultrafine fibers particularly of fiber glass, but has a fiber surface area on an equivalent weight basis which is substantially less than that of at least one of the outer layers. High rate, low temperature discharge performance of the battery is enhanced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.