Energy transfer unit, charge unit, and power supply unit

摘要

An energy transfer unit constructed such that a plurality of series-connected circuits which are formed by series-connecting at least windings 3a to 3d and switching means Sa to Sd are provided and that the plurality of series-connected circuits are parallel-connected to a plurality of energy storage means Ca to Cd respectively, the plurality of windings 3a to 3d are magnetically coupled to each other respectively, and the plurality of switching means Sa to Sd are switching-controlled in synchronous with each other respectively.