VOLTAGE EQUALIZATION DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a voltage equalization device in which the balance time of a balance circuit using an active system is shortened.SOLUTION: The voltage equalization device comprises: first active system balance circuits 404-406 for equalizing the voltage of a plurality of battery cells forming battery blocks 401-403; and a second active system balance circuit 407 for equalizing all battery cells forming a battery pack. When equalizing all battery cells forming a battery pack, the voltage equalization device performs balance operation of the first balance circuits 404-406 and the second balance circuit 407 simultaneously.