The invention provides a novel spliced brushless slotless rectifier-free permanent magnet DC motor, comprising an outer stator, an inner stator and a rotor, wherein the outer stator is provided with afixing clamp slot and the inner stator of the inner stator is connected with the fixing clamp slot of the outer stator; The inner stator adopts a block structure and a slotless structure, the windingis directly wound on the inner stator yoke and fixed on the inner stator yoke by a consolidating agent; The inner stator winds a set of windings on each inner stator block so that each inner stator block can be processed separately. The rotor has two radiation rings with different polarities, so that the magnetic fields of the air gaps corresponding to the different radiation rings are in opposite directions. The inner stator of the invention adopts a block structure, the inner stator adopts a slotless structure, the groove utilization ratio is higher, the processing procedure is simple, theautomation production is easy to realize, the cost is reduced, the safety and reliability are higher, and the maintenance workload in the later period is less. At that same time, the motor can run inboth a power generation state and an electric state.