Secondary battery parameter measurement method, secondary battery charge / discharge control method and life prediction method using the same, secondary battery charge / discharge control device, and power storage device using the same

摘要

A charge/discharge control apparatus for a secondary battery is disclosed. The charge/discharge control apparatus comprises a measuring means (19) for measuring a terminal voltage (V), a charge/discharge current (I) and a charge/discharge time (T) of a secondary battery (12). Furthermore, memory means (7, 8) for storing the terminal voltage (V), the charge/discharge current (I) and the charge/discharge time are provided. Furthermore, the apparatus comprises a control means (9) for controlling a predestinated charge/discharge current which is to flow to/from the secondary battery (12), and arithmetic means (4) for arithmetically determining an open-circuit voltage, a polarization resistance thereof, a life cycle number, a residual charge/discharge time and a charge/discharge control voltage, respectively, of the secondary battery (12) on the basis of the terminal voltage (V), the charge/discharge current (I), the predestinated charge/discharge current and the charge/discharge time. Moreover, also an apparatus for storing electric energy is proposed. IMAGE