Battery state of charge indicator device

Details Battery state of charge indicator device Battery state of charge indicator device

1980-07-18

1982-04-13

Rubinson, Gene Z.

Electricity: motive power systems

Battery-fed motor systems

320 45, H02P 528

Patent

active

043250106

ABSTRACT:
A battery state of charge indicating device intended for use in a battery powered vehicle includes a battery voltage measuring circuit which produces an output signal dependent on the voltage of a storage battery. A switch element connects the output signal to a storage capacitor when conductive. Switch element is rendered conductive from time to time by a timer circuit triggered by an input from a motor current detector circuit. The timer circuit is triggered whenever the motor current falls below a threshold value, indicating that the battery current has ceased.

REFERENCES:
patent: 3890556 (1975-06-01), Melling et al.
patent: 4165795 (1979-08-01), Lynch et al.

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