Apparatus for charging rechargeable battery

Details Apparatus for charging rechargeable battery Apparatus for charging rechargeable battery

1980-04-09

1982-10-12

Hickey, Robert J.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

320 39, 320 40, H02J 704

Patent

active

043541488

ABSTRACT:
A rechargeable battery is supplied with a charging voltage from a charging voltage source and exhibits a charging voltage characteristic having a peak shortly before the rechargeable battery reaches a fully charged state. A resistor voltage dividing circuit having a plurality of voltage output terminals is connected to both terminals of the rechargeable battery. A voltage memory device is provided for storing a predetermined voltage based on a voltage supplied from the voltage dividing circuit corresponding to the peak point of the charging voltage characteristic and comparison is made of the other output voltage obtained from the voltage dividing circuit after the peak point is passed and the stored voltage in the voltage memory device and a supply of a charging power from the charging voltage source to the rechargeable battery is interrupted when the difference between these voltages becomes zero.

REFERENCES:
patent: 3603862 (1971-09-01), Chase et al.
patent: 3794905 (1974-02-01), Long
patent: 3938021 (1976-02-01), Kosmin
patent: 4134056 (1979-01-01), Fukuii et al.
patent: 4213081 (1980-07-01), Taylor

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