POWER STORAGE MODULE VOLTAGE EQUALIZING CIRCUIT

PROBLEM TO BE SOLVED: To provide a power storage module voltage equalizing circuit capable of performing stable voltage equalization regardless of a connection order of power storage cells and increasing an effective time of voltage equalization by suppressing useless cost.SOLUTION: The power storage module voltage equalizing circuit includes: a power storage module M formed by connecting power storage cells 1-6 in series; power storage devices 11-16 for voltage equalization corresponding to the power storage cells 1-6; first switches 31-42 for performing ON/OFF control on connections between the power storage cells 1-6 and the power storage devices 11-16 for voltage equalization in the corresponding relation; and second switches 61-72 for performing ON/OFF control on parallel connections of the power storage devices 11-16 for voltage equalization. Control is performed so as to alternately switch between the state where the first switches 31-42 are turned on and the second switches 61-72 are turned off and the state where the first switches 31-42 are turned off and the second switches 61-72 are turned on. 【課題】蓄電セルの接続順番に関わらず安定した電圧均等化を行うことができると共に、無駄なコストを抑えて電圧均等化の有効時間を増加させることができる蓄電モジュール電圧均等化回路の実現。【解決手段】蓄電セル１〜６を直列接続して成る蓄電モジュールＭと、各蓄電セル１〜６に対応する電圧均等化用蓄電デバイス１１〜１６と、対応関係にある各蓄電セル１〜６と各電圧均等化用蓄電デバイス１１〜１６との接続をＯＮ／ＯＦＦ制御する第１のスイッチ３１〜４２と、電圧均等化用蓄電デバイス１１〜１６の並列接続をＯＮ／ＯＦＦ制御する第２のスイッチ６１〜７２を備え、第１のスイッチ３１〜４２がＯＮ及び第２のスイッチ６１〜７２がＯＦＦの状態と、第１のスイッチ３１〜４２がＯＦＦ及び第２のスイッチ６１〜７２がＯＮの状態とを交互に切替制御する。【選択図】図１