Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – With discharge of cells or batteries
Patent
1991-08-28
1992-10-06
Stephan, Steven L.
Electricity: battery or capacitor charging or discharging
Serially connected batteries or cells
With discharge of cells or batteries
320 39, 323906, H02J 700
Patent
active
051534975
ABSTRACT:
A circuit for regulating the charging of a storage battery by a photovoltaic array includes a relay switch connected between the storage battery and photovoltaic array. An operational amplifier connected as a differential amplifier with a low-pass filter has one input terminal connected to the storage battery through a resistive divider and the other input terminal connected to a voltage reference. The output of the operational amplifier is connected to the input of a transistor amplifier having an output connected to the control coil of the relay switch. When the battery voltage exceeds a predetermined setpoint, as presented to the input terminal of the operational amplifier through the resistive divider, relative to the voltage reference, the operational amplifier and transistor amplifier de-energize the control coil of the relay switch, thereby opening the relay switch and disconnecting the photovoltaic array from the storage battery. As the voltage of the storage battery falls below the setpoint, the state of the relay switch is reversed and charging resumes. The low pass filter prevents the relay switch from changing state at a frequency greater than a preselected frequency.
REFERENCES:
patent: 4175249 (1979-11-01), Gruber
patent: 4200833 (1980-04-01), Wilkerson
patent: 4306183 (1981-12-01), Wright
patent: 4313078 (1982-01-01), Bilsky et al.
patent: 4314198 (1982-02-01), Rogers
patent: 4327318 (1982-04-01), Kwon et al.
patent: 4384317 (1983-05-01), Stackpole
patent: 4453119 (1984-06-01), Staler et al.
patent: 4571532 (1986-02-01), Jaster
patent: 4649287 (1987-03-01), Nola
patent: 4661758 (1987-04-01), Whittaker
patent: 4714868 (1987-12-01), Maruyama et al.
patent: 4742291 (1988-05-01), Bobier et al.
patent: 4873480 (1989-10-01), Lafferty
Berhane Adolf
Pappas George
Stephan Steven L.
LandOfFree
Circuit for regulating charging of a storage battery by a photov does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Circuit for regulating charging of a storage battery by a photov, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circuit for regulating charging of a storage battery by a photov will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1191787