Patent ID: 6917181
Filing Date: 2005-07-12
Classification: B60L,H01M,H02J,Y02E,Y02T

Abstract:
1. A power supply unit comprising: at least one storage battery comprising a plurality of circuits connected in series, each of the plurality of circuits including a first cell group and a second cell group connected in parallel, wherein said second cell group utilizes an electrolyzable electrolytic solution or generates recombinable gas; and a charger/discharger for controlling charge/discharge of said storage battery adapted to charge said storage battery up to a voltage at which the electrolytic solution of said second cell group is electrolyzed, or to a voltage at which the generated gas is recombined; wherein the first cell group includes lithium secondary cells or electrical double layer capacitors, and the second cell group includes lead cells, nickel hydrogen cells, nickel cadmium cells or fuel cells.