POWER SUPPLY SYSTEM AND CELL ASSEMBLY CONTROL METHOD

摘要

A power supply system includes: a cell assembly having a first cell group formed by a plurality of first element cells connected in series and a second cell group formed by a plurality of second element cells connected in series; and a generator. The average charge voltage V1 of the first cell group is smaller than the average charge voltage V2 of the second cell group. The system further includes: a forcible discharge unit which can forcibly discharge the first cell group; and a control unit. The control unit measures the voltage of the first cell group. When the voltage has reached the forcible discharge start voltage Va, the control unit forcibly discharge the first cell group until it reaches the forcible discharge end voltage Vb.