Dc motor comprising accelerator and energy storage ring

A direct-current (DC) motor, comprising an accelerator and an energy storage ring, wherein a rotor of the DC motor comprises Z slots embedded with Z rotor hollow tubes, wherein Z is an integer, wherein a first end of the Z rotor hollow tubes is connected to a first rotor commutation ring, and a second end of the Z rotor hollow tubes is connected to a second rotor commutation ring, the Z rotor hollow tubes, the first rotor commutation ring, and the second rotor commutation ring constitute a rotor hollow tube winding, a first fixed commutation ring is installed on a first side of the first rotor commutation ring away from the Z rotor hollow tubes, and a second fixed commutation ring is installed on a second side of the second rotor commutation ring away from the Z rotor hollow tubes, wherein a gap is provided between the first fixed commutation ring and the first rotor commutation ring, and a gap is provided between the second fixed commutation ring and the second rotor commutation ring, the first fixed commutation ring communicates with the second fixed commutation ring through Z fixed hollow tubes, the Z rotor hollow tubes and the Z fixed hollow tubes constitute the energy storage ring, fixed commutation hollow tube groups are connected at a junction of two main magnetic poles (as shown in FIG. 1).