Charge indicator of battery

Details Charge indicator of battery Charge indicator of battery

1993-04-16

1994-03-29

Stephan, Steven L.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

324428, H02J 700, G01N 27416

Patent

active

052988503

ABSTRACT:
A charge indicator for a battery functioning to accurately indicate the residual capacity corresponding to changes of the discharge rate of the battery uses a timer output voltage of a timer circuit and is changed corresponding to the discharge rate of the battery by a pulse-period-setting part. The timer output voltage and the voltage corresponding to the residual capacity are differentially amplified in the corresponding voltage of the discharge rate-varying part to change the corresponding voltage of the discharge rate. When the sensed voltage exceeds a predetermined value, the reset part resets the voltage to a corresponding voltage of the fully charged battery.

REFERENCES:
patent: 4193026 (1980-03-01), Finger et al.
patent: 4258306 (1981-03-01), Bourke et al.
patent: 4388618 (1983-06-01), Finger
patent: 4560937 (1985-12-01), Finger
patent: 4740754 (1988-04-01), Finger

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