Patent ID: 7914917

Claim:
A hybrid power supply unit, comprising a high-capacity nonaqueous electrolyte battery group and a high-power nonaqueous electrolyte battery group different in discharge characteristics connected to each other in parallel, wherein; a difference in electrode plate area per capacity between a positive electrode of the high-capacity nonaqueous electrolyte battery group and a positive electrode of the high-power nonaqueous electrolyte battery group is more than 100 cm 2 /Ah, said high-capacity nonaqueous electrolyte battery group has a 0.2 C discharge capacity per cell greater than that of said high-power nonaqueous electrolyte battery group, and said high-power nonaqueous electrolyte battery group has a rate of 5 C discharge capacity per cell to 0.2 C discharge capacity per cell (5 C discharge capacity/0.2 C discharge capacity) greater than that of said high-capacity nonaqueous electrolyte battery group.