Flywheel energy storing device with permanent magnet bearing and thrust bearing

The invention discloses a flywheel energy storing device with a permanent magnet bearing and a thrust bearing which comprises an upper shaft, a lower shaft, a flywheel body, a permanent magnet bearing, a motor, a bearing seat, a damper and a container, wherein the bottom of the lower shaft is provided with a ball head; the ball head is positioned in a groove at the top of the bearing; a damper stator is embedded in a ring groove of an upper soft magnetic ring; a damper rotor is embedded in a ring groove at the upper part of the flywheel body, and the upper end surface of a rotor outer insulative magnetic ring is opposite to the lower end surface of a stator outer permanent magnetic ring; the upper end surface of a rotor outer permanent magnetic ring is opposite to the lower end surface of a stator middle insulative magnetic ring; the upper end surface of a rotor middle insulative magnetic ring is opposite to the lower end surface of a stator middle permanent magnetic ring; the upper end surface of the rotor inner permanent magnetic ring is opposite to the lower end surface of a stator inner permanent magnetic ring; and the upper end surface of the rotor inner permanent magnetic ring is opposite to the low end surface of the stator inner permanent magnetic ring. According to the flywheel energy storing device of the structure, the flywheel body can pass through the low order critical speed of rotation, and the whole flywheel energy storing device has favorable dynamic characteristics.