Sealed lead-acid battery float charger and power supply
US4663580A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 9, 1986 |
| Grant date | May 5, 1987 |
| Priority date | — |
| Expiry date | Jan 9, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S323/907
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power supply is provided with a predetermined nonlinear temperature coefficient for float charging sealed lead-acid batteries and providing power to a load. A temperature compensation network in the power supply provides the predetermined nonlinear temperature coefficient by using a linear temperature coefficient element (forward biased silicon diode) and a nonlinear temperature coefficient element (thermistor) in combination. Additionally, an over-voltage protection circuit, to disable the power supply should the output voltage exceed a predetermined value, is disclosed having a second temperature compensation network to compensate for the output voltage variation with temperature of the power supply.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.