Method for charging storage cells or storage batteries

Details Method for charging storage cells or storage batteries Method for charging storage cells or storage batteries

1975-06-24

1976-11-16

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

039926583

ABSTRACT:
A method for charging storage cells or storage batteries by automatically switching a charger off or over to trickle charge when full charge is reached, comprising the steps of automatically determining the shape of the charging voltage curve as a function of time after the gassing voltage of the storage cell or storage battery to be charged has been reached, and switching the charging current off or over to trickle charge as soon as the increase of the charging voltage approaches zero in the course of time.
The method further includes the steps of providing an auxiliary voltage by charging a capacitor with a charge current, automatically varying the charge current within pre-set limits and automatically simulating the shape of the charging voltage curve of the storage device as a function of time by means of the auxiliary voltage, after reaching the gassing voltage, such that the auxiliary voltage is a certain extent smaller than the charging voltage as long a difference quotient of the charging voltage exceeds the difference quotient of the capacitor voltage defined by a predetermined lower limit of the charge current of the capacitor after the same time. The charger is automatically cut off if the charging voltage equals or is lower than the capacitor voltage.

REFERENCES:
patent: 3794905 (1974-02-01), Long
patent: 3800208 (1974-03-01), Macharg

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