Hilfsvorrichtung zur Benützung in einem Elektrofahrzeug

摘要

A storage battery charge capacity measuring device for use in an electric vehicle (1) which determines charge capacity based on the terminal voltage of a storage battery (14) measured upon completion of a charging operation, said battery capacity measuring device comprising: means for measuring the terminal voltage across the storage battery (14) at predetermined intervals and determining whether the storage battery (14) is in a surface charge state based on a variation in the measured terminal voltages; means (71) for allowing the storage battery to discharge on a light load when the storage battery (14) is in a surface charge state; and means for determining charge capacity based on the terminal voltage when the surface charge state is eliminated.