Permanent magnet embedded rotor of BLDC motor

摘要

A permanent magnet embedded rotor of BLDC motor, comprises: a rotor core (A), which is in a shape of cylinder and formed by stacked rotor sheets, having p pairs of permanent magnet grooves (C) which are bar-shaped and 2p heat-radiating through-holes (B); wherein the p pairs of permanent magnet grooves (C) and the 2p heat-radiating through-holes (B) are all provided inside the rotor core (A) in a direction of an center axle thereof, and evenly spaced around the center axle of the rotor core (A); each of the heat-radiating through-holes (B) is provided between two permanent magnet grooves (C); and p is an integer no less than 1; and p pairs of permanent magnets (D) which are bar-shaped, fixedly provided in the permanent magnet grooves (C), wherein each of the permanent magnets (D) has a trapezoid cross section, and p is an integer no less than 1.

主权项

1. A permanent magnet embedded rotor of BLDC motor, comprising:
a rotor core (A), which is in a shape of cylinder and formed by stacked rotor sheets, having p pairs of permanent magnet grooves (C) which are bar-shaped and 2p heat-radiating through-holes (B); wherein said p pairs of permanent magnet grooves (C) and said 2p heat-radiating through-holes (B) are all provided inside said rotor core (A) in a direction of an center axle thereof, and evenly spaced around said center axle of said rotor core (A); each of said heat-radiating through-holes (B) is provided between two permanent magnet grooves (C); and p is an integer no less than 1; and p pairs of permanent magnets (D) which are bar-shaped, fixedly provided in said permanent magnet grooves (C), wherein each of said permanent magnets (D) has a trapezoid cross section, and p is an integer no less than 1.