The invention discloses a power battery pack. The power battery pack is characterized in that a first single battery of each battery string of the power battery pack is connected with an operational amplifier by a first series switch, is connected with a second single battery by a second series switch and is connected with the operational amplifier by first and second parallel switches, each first shielded switch is connected with two ends of a series structure in parallel, and each series structure comprises the corresponding first single battery and the corresponding second series switch; structures of the other single batteries are identical to one another, each single battery is connected with the corresponding next single battery by the corresponding series switch and is connected with the corresponding operational amplifier by the two corresponding parallel switches, each shielded switch is connected with two ends of the corresponding series structure in parallel, and each series structure comprises the corresponding single battery and the corresponding series switch of the single battery; one end of each switch is connected with a main cathode of the corresponding battery string, the other end of each switch is connected with a main anode of the corresponding battery string by a super-capacitor, and cathodes of the super-capacitors are connected with cathodes of the operational amplifiers. The invention further provides a control system with the power battery pack and a control method. The power battery pack, the control system and the control method have the advantage that the service lives of the single batteries can be prevented from being shortened due to faults of a certain battery.