Apparatus for indicating remaining battery capacity

Details Apparatus for indicating remaining battery capacity Apparatus for indicating remaining battery capacity

1984-05-25

1986-12-02

Hickey, R. J.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

320 39, 340636, H02J 700, G08B 2100

Patent

active

046267654

ABSTRACT:
When the discharging of a battery is suspended, its open-circuit voltage or a voltage corresponding to the open-circuit voltage is detected, and with the voltage thus detected, as a start point an imaginary voltage curve having a certain decreasing rate is set for instance (by discharging a capacitor which has been charged by the voltage). When the discharging of the battery is suspended, the voltage detected at that time is used to correct the start point voltage of the imaginary voltage curve. According to the voltage obtained from the imaginary voltage curve, the number of LEDs turned on is changed or one of the LEDs is selected or liquid crystal display means is operated to display the remaining capacity of the battery.

REFERENCES:
patent: 3992658 (1976-11-01), Bechtold et al.
patent: 4027231 (1977-05-01), Lohrmann
patent: 4180770 (1979-12-01), Eby
patent: 4217533 (1980-08-01), Van Beek
patent: 4234840 (1980-11-01), Konrad et al.
patent: 4320334 (1982-03-01), Davis et al.

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