Patent Number: 7,825,634

Title: Charge accumulating system and charge accumulating method

Abstract: A charge accumulating system of the present invention comprises a nonaqueous electrolyte battery unit including a nonaqueous electrolyte containing an ionic liquid, a negative electrode and a positive electrode, a temperature detector which detects an ambient temperature of the battery unit, a first controller which lowers a maximum battery voltage of the battery unit when the detected temperature from the temperature detector exceeds a standard ambient temperature, and a second controller which controls a maximum charging amount Q.sub.max of the nonaqueous electrolyte battery unit at a constant level, or lowers the maximum charging amount Q.sub.max when the detected temperature from the temperature detector exceeds the standard ambient temperature.

Inventors: Kishi; Takashi (Yokosuka, JP), Kuboki; Takashi (Tokyo, JP), Kobayashi; Tsuyoshi (Kawasaki, JP)

Assignee: Kabushiki Kaisha Toshiba

International Classification: H02J 7/04 (20060101); H02J 7/16 (20060101)

Expiration Date: 2019-11-02 0:00:00