Process for determining the state of a battery

Details Process for determining the state of a battery Process for determining the state of a battery

1991-12-04

1993-02-16

Stephan, Steven L.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

320 44, 320 48, H01M 1044

Patent

active

051874245

ABSTRACT:
A process for determining the state of a battery by carrying out in a cycle, starting from a specific charging state of the battery, a charging operation and a discharging operation, each with a specific current, the cycle being terminated when the specific charging state is reached again, and the state of the battery being deduced from the difference between the time periods required for the charging operation and the discharging operation. Alternatively, from a specific charging state of the battery a discharge can be carried out, in order to determine the available capacity from the extracted charge.

REFERENCES:
patent: 3593009 (1971-07-01), Scholl
patent: 3680072 (1972-07-01), Charbonnier et al.
patent: 3857087 (1974-12-01), Jones
patent: 4413221 (1983-11-01), Benjamin et al.
patent: 4639655 (1987-01-01), Westhaver et al.
patent: 4677363 (1987-06-01), Kopmann
patent: 4775827 (1988-10-01), Ijntema et al.
patent: 4806840 (1989-02-01), Alexander et al.
Der Nickel-Cadmium Akkumulator-Anwendungstechnisches Handbook-General Elec. Co., Pub. No. GET-3148AD.

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