Apparatus for charging rechargeable battery

Details Apparatus for charging rechargeable battery Apparatus for charging rechargeable battery

1977-01-05

1979-01-09

Hickey, Robert J.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

320 35, 320 39, H02J 704

Patent

active

041340566

ABSTRACT:
An apparatus for charging a rechargeable battery adapted to be responsive to a charge state of the battery to stop charging the battery, wherein said battery is connected to a direct current voltage source through a switching transistor, which is connected to be responsive to a level detected output of a level detector for level detecting a differentiated output of a differentiation circuit coupled to said battery at a predetermined threshold voltage level of said differentiated voltage output which is selected such that the level detected output is obtained if and when said battery has just been fully charged, whereby said switching transistor is controlled to be non-conductive or less conductive to terminate a charging current supplied to said battery.

REFERENCES:
patent: 3852652 (1974-12-01), Jasinski
patent: 3886428 (1975-05-01), Macharg
patent: 3911349 (1975-10-01), Seeley et al.
patent: 3938021 (1976-02-01), Kosmin
patent: 4034279 (1977-07-01), Nilsson

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