METHOD FOR SELECTING CHARACTERISTIC OF STORAGE BATTERY AND CONSTRUCTING GROUP BATTERY BY PARTIAL CHARGE/DISCHARGE

摘要

PURPOSE: A method for selecting a storage battery according to characteristics and a method for constructing a group battery by selecting a storage battery by partial charge/discharge are provided, to allow a plurality of storage batteries constituting a group battery to show the uniform operation characteristic, to increase the capacity of the group battery, and to improve the stability against over-charging and over-discharging. CONSTITUTION: The method for selecting a storage battery according to characteristics comprises measuring the change of voltage(V) in time(t) by partial charging/discharging or partial charging/discharging and opening a plurality of storage batteries in discharging state; approximating the obtained value to V(t)=Σ_t Ai exp(-t/τi) to obtain Ai and τi as reaction parameters of storage batteries; and sorting and selecting storage batteries according to the reaction parameters.