Battery power source
US4629964A · kind A · utility
Inventor
Key dates
| Filing date | Sep 28, 1983 |
| Grant date | Dec 16, 1986 |
| Priority date | — |
| Expiry date | Sep 28, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S320/22
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A regulated, low-voltage DC power source which draws energy from a standard AC outlet and uses a bank of lead-acid batteries for intermediate power storage. The power source features a multi-level charge-voltage controller which is automatically adjusted in function of the net current flowing in or out of the batteries. The charge-voltage control is accomplished by switching the charging current rectifiers on or off only at the zero-axis crossing in order to minimize voltage spikes, and only at every other crossing in order to minimize DC components in the secondary of the transformer. Charge current, load current and net battery current are separately metered in order to provide maximum efficiency and safety in the operation of the power source. A low-voltage-drop series regulator is relied upon to provide a 5 volt regulated output to the load from a 6 volt unregulated battery voltage source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.