Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – With discharge of cells or batteries
Patent
1975-05-30
1976-10-19
Miller, J. D.
Electricity: battery or capacitor charging or discharging
Serially connected batteries or cells
With discharge of cells or batteries
320 6, 320 19, 320 39, H02J 700
Patent
active
039873528
ABSTRACT:
In a power supply system constituted of a relatively high output and small capacity first battery such as a lead or alkaline storage battery and a lower output and larger capacity second battery such as a fuel cell, a portion of the discharge current of the second battery is utilized for charging the first battery, while the system is delivering a fluctuating load current under the control of a chopper, by controlling the flow of the charging current through a second chopper circuit such that the charging current is continuously furnished to the first battery when its residual capacity decreases to a predetermined value, but is interrupted periodically when the residual capacity reaches a predetermined upper limit so as to compensate slightly insufficiently for discharged energy in each cycle of the load current controlling chopper actions, resulting in gradual drop of the residual capacity to the former predetermined value and recurrence of the continuous charging.
REFERENCES:
patent: 2818543 (1957-12-01), Dodge
patent: 3489915 (1970-01-01), Engelhardt
patent: 3683258 (1972-08-01), Harbonn
patent: 3821626 (1974-06-01), Maver et al.
Adams Bruce L.
Burns Robert E.
Hickey Robert J.
Lobato Emmanuel J.
Miller J. D.
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