Variable timing circuit for motive power battery chargers
US4439719A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 9, 1982 |
| Grant date | Mar 27, 1984 |
| Priority date | — |
| Expiry date | Jul 9, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S320/19
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A timing circuit for charging motive power batteries (B). The timing control circuit (25) provides different times of charge in accordance with the time at which a predetermined voltage/current state of the battery is achieved. Control circuit (25) cooperates with a controller (18) in causing termination of the charging operation immediately upon reaching of the voltage/current state if this occurs in a first time slot of an initial control time period. The timing circuit (25) provides an automatic finish time period of charge if the battery (B) reaches the predetermined voltage/current state at some time during the initial control time period. The control includes a switch (23) permitting the user to cause an automatic additional amount of charging upon completion of the normal charging cycle effected by the control, such as for effecting a weekend charge. The control further includes structure for terminating the charging operation in the event the battery being charged does not reach the predetermined voltage/current state at the end of a preselected maximum time. A signal light (24) signals such a fault condition in the charging operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.