Permanent magnet synchronous motor with optimized heat dissipation effect

The invention relates to the related technical field of motors, and discloses a permanent magnet synchronous motor with an optimized heat dissipation effect, the permanent magnet synchronous motor comprises a shell, a stator, a rotor, a wire group wound on the stator, a positive pressure pump, a negative pressure pump and an intermittent closing device, the stator is arranged in the shell, the rotor rotates in the stator, the shell comprises an inner cylinder and an outer cylinder, and the outer cylinder sleeves the inner cylinder; a water-cooling heat dissipation gap is formed between the inner cylinder and the outer cylinder, elastic heat exchange films and cooling fins are arranged in the water-cooling heat dissipation gap, the cooling fins are connected to the outer wall of the inner cylinder, the elastic heat exchange films are arranged between every two adjacent cooling fins, heat dissipation holes are formed in the side wall of the inner cylinder, and the elastic heat exchange films are fixed to the in