VOLTAGE BALANCE CIRCUIT FOR ACCUMULATION ELEMENT

摘要

PROBLEM TO BE SOLVED: To provide a voltage balance circuit that can always balance voltages of a plurality of accumulation elements connected in series at high efficiency. SOLUTION: There are provided in the voltage balance circuit that balances the voltages of the plurality of accumulation elements connected in series: an inductance element that is connected in such a manner that mutual inductance is generated between the arbitrary two accumulation elements for balancing other than a self-inductance component; a signal generation part that generates a signal of a prescribed frequency; a plurality of switching elements each of which switches a state that the two accumulation elements and the inductance element are connected to each other by the signal from the signal generation part to a state that the elements are disconnected from each other; and a capacitor inserted between the inductance element and each accumulation element. The voltage of the plurality of accumulation elements are balanced by utilizing the fact that the self-inductance component of the inductance element and the capacitor resonate with each other at the prescribed frequency. COPYRIGHT: (C)2007,JPO&INPIT