Positive plate current collector for lead storage battery and lead storage battery comprising the same
US6620551B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 10, 2001 |
| Grant date | Sep 16, 2003 |
| Priority date | — |
| Expiry date | Jun 13, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lead acid battery can be obtained which exhibits excellent life properties while keeping the level of self-discharging and electrolyte loss equal to that of those comprising a Pb—Ca alloy collector.In other words, the present invention lies in a positive collector for lead acid battery comprising a substrate and a surface layer made of an alloy composition different from that of the substrate formed on at least a part of the surface of the substrate, characterized in that the substrate is a Sb-free lead alloy or lead and said surface layer is a lead alloy layer comprising one or more metals selected from the group consisting of alkaline metals and alkaline earth metals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.