New techniques, using a special capacitive readout version of the Curtis mercury coulometer, are being used in an ampere-hour meter for rechargeable battery systems. The circuit meets one definition of the “perfect fuel” gage for battery powered vehicles. The unit consists of a small solid-state electronics module driving an indicating meter. It is powered from the battery and will directly and automatically indicate ampere-hours discharged and charged. The unit has an automatic stop when the meter displays “full” or 100% of capacity to permit a safe overcharge situation. Additionally, the unit can provide alarms and detectors for low capacity signals or auxiliary charge control functions. The system is currently under test on a number of battery-powered vehicle programs.


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    Title :

    A New “Fuel” Gage for Electrically Powered Vehicles


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    Mid-Year Meeting ; 1968



    Publication date :

    1968-02-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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