Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – With discharge of cells or batteries
Patent
1976-08-19
1978-12-26
Hickey, Robert J.
Electricity: battery or capacitor charging or discharging
Serially connected batteries or cells
With discharge of cells or batteries
320 32, 320 39, H02J 704
Patent
active
041318412
ABSTRACT:
An improved battery charger having a current limiting transformer for supplying a charging current. The transformer includes primary and secondary coils wound about a core and has a shunt path for a portion of the magnetic flux induced by the voltage appearing on the primary. A pair of silicon controlled rectifiers are alternately triggered into their forward conductive states at points relatively early in each alternating current half cycle to provide a maximum charging current when a substantially discharged battery is to be recharged. As the charging process progresses, the battery voltage increases and at a predetermined value of the battery voltage a smooth transition from the current-controlled mode to a voltage-controlled mode is inaugurated. After the change to the voltage-controlled mode has been completed, the SCRs are triggered into conduction much later in each cycle, thereby furnishing a very low or trickle current which can be continued indefinitely without damage to the battery. Simple adjustments are provided for determining the maximum current charging rate and the particular voltage at which the changeover is to begin. Provision is also made for preventing an initial sudden current surge when first turning on the power, thereby avoiding any unnecessary blowing of fuses.
REFERENCES:
patent: 3086159 (1963-04-01), Daly
patent: 3376487 (1968-04-01), Bixby
patent: 3736490 (1973-05-01), Fallon et al.
patent: 3854082 (1974-12-01), Nasby et al.
Hickey Robert J.
Introl Corp.
LandOfFree
Battery charger with automatic change from current to voltage mo does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Battery charger with automatic change from current to voltage mo, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Battery charger with automatic change from current to voltage mo will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1130701