Segmented iron core IPM plastic package forming rotor

Abstract

The invention discloses a segmented iron core IPM plastic package forming rotor, and relates to the field of motors. An existing IPM rotor is designed into an integral punch forming rotor iron core ofa magnetism isolating bridge structure, and greater leakage flux exists. The segmented iron core IPM plastic package forming rotor comprises a rotor iron core, magnetic shoes, a PBT and a shaft, wherein the rotor iron core consists of a plurality of same iron core segments in an encircling manner; a magnetic shoe groove and an anti-leakage flux groove for reducing leakage flux are arranged between every two adjacent iron core segments respectively; every two adjacent iron core segments are separated from each other through the corresponding anti-leakage flux groove and the corresponding magnetic shoe groove; each iron core segment is provided with a positioning structure for realizing the positioning of the corresponding iron core segment respectively; each magnetic shoe is inserted intothe corresponding magnetic shoe groove; the magnetic shoes are fixed on the rotor iron core through the PBT; and the shaft is connected with the magnetic shoes and the rotor iron core into a whole body through the PBT. Through the technical scheme, the rotor iron core is segmented into the same iron core segments, so that the magnetism isolating bridge leakage flux problem of a traditional integral rotor iron core is solved, the utilization rate of the rotor magnetic shoes is improved, and the power density of the motor is improved.

Description

technical field [0001] The invention relates to the field of motors, in particular to a novel segmented iron core IPM plastic-encapsulated molded rotor. Background technique [0002] At present, the existing IPM rotors are all designed with one-piece stamped and formed rotor cores with a magnetic isolation bridge structure. The main reason is due to the consideration of productivity, the one-piece iron core is easy to assemble, the number of operating procedures is small, and the concentricity is easy to ensure. However, due to the design of the magnetic isolation bridge, there must be a large magnetic flux leakage, which reduces the utilization rate of the rotor magnetic tiles. Contents of the invention [0003] The technical problem to be solved and the technical task proposed by the present invention are to perfect and improve the existing technical solutions, and to provide a block-type iron core IPM plastic-encapsulated molded rotor for the purpose of improving the u...

AI Technical Summary

Problems solved by technology

However, due to the design of the magnetic isolation bridge, there must be a large magnetic flux leakage, which reduces the utilization rate of the rotor magnetic tiles

Images