Abstract: A permanent magnet synchronous motor with an integrated pump body and its preparation method are provided. The preparation method comprises: 1) performing an injection molding process for the first time on a coil, which is wound on a coil former, to form a coil sealing part for sealing the coil; 2) assembling an iron core in the sealed coil and performing the injection molding process for the second time on them to form a pump body part with a rotor barrel, wherein the rotor barrel is formed by conducting the injection molding process based on the iron core, and an isolating thin layer is formed at a polar arc part of the iron core to isolate the iron core from a rotor cavity in the rotor barrel. A good electromagnetic property of the motor is ensured and the water leakage problem is solved.

Abstract: A permanent magnet synchronous motor with an integrated pump body and its preparation method are provided. The preparation method comprises: 1) performing an injection molding process for the first time on a coil, which is wound on a coil former, to form a coil sealing part for sealing the coil; 2) assembling an iron core in the sealed coil and performing the injection molding process for the second time on them to form a pump body part with a rotor barrel, wherein the rotor barrel is formed by conducting the injection molding process based on the iron core, and an isolating thin layer is formed at a polar arc part of the iron core to isolate the iron core from a rotor cavity in the rotor barrel. A good electromagnetic property of the motor is ensured and the water leakage problem is solved.