Battery charger device and method

Details Battery charger device and method Battery charger device and method

1992-12-18

1994-06-14

Hickey, R. J.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

320 39, H02J 710

Patent

active

053213475

ABSTRACT:
A battery charger device is provided with a control switch which connects electrically a rechargeable battery load to a power supply which supplies charging current for charging the battery load. A pulse generator generates a series of pulses that control the control switch to connect and disconnect intermittently the power supply and the battery load. A maximum battery terminal voltage of the battery load is stored in a voltage memory means, and a fractional voltage is derived from the maximum battery terminal voltage. The fractional voltage is compared with a current battery terminal voltage from the battery load. A control signal is generated so as to prevent the control switch from receiving the pulses from the pulse generator, thereby disconnecting the power supply from the battery load so as to terminate charging of the battery load when the current battery terminal voltage is less than the fractional voltage.

REFERENCES:
patent: 3800208 (1974-03-01), Macharg
patent: 3936718 (1976-02-01), Melling et al.
patent: 4549127 (1985-10-01), Taylor et al.

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