LAYERED SECONDARY BATTERY

摘要

PURPOSE: To provide a layered secondary battery which is of high output and in which the charging and discharging properties do not deteriorated by charging and discharging cycle. CONSTITUTION: The unit cells B1 -Bn of a secondary battery are stacked, and plural pieces are connected in series. In this layered secondary battery, one unit cell C1 -Cn of an electric double layer capacitor is connected in parallel to one to three unit cells of the secondary battery.