The utility model relates to an all-function big power mixed power battery which comprises a power battery flow equalizing discharge device, wherein the improvement of the existing technique also comprises a constant-current charge and discharge controller, a super energy storage machine, a DC/DC converter and a power supply control circuit. The all-function big power mixed power battery is characterized in that the cost is low, the structure is simple, and the all-function big power mixed power battery is suitable for industrial production, the movement of a super capacitance group greatly improves the energy recovery efficiency of the whole system, the circulating frequency of the super capacitance is high, the service life is long, and the working temperature range is wide. The power battery of the super capacitance is adopted, which not only improves the energy source utilization rate of an electric vehicle, but also reduces the volume and the energy density of the energy storage unit, and charging capacity limit and discharge depth limit are alleviated.