Surface-mounted permanent magnet motor rotor convenient for heat dissipation and permanent magnet motor

The invention discloses a surface-mounted permanent magnet motor rotor convenient for heat dissipation and a permanent magnet motor. The permanent magnet motor rotor comprises a rotor yoke and permanent magnets. A through hole matched with a rotating shaft is formed in the middle of the rotor yoke. The permanent magnets are evenly arranged on the outer wall of the rotor yoke. Permanent magnet metal blocks are arranged at the ends, away from the rotor yoke, of the permanent magnets. A heat dissipation bump connected with the rotor yoke is arranged between every two adjacent permanent magnets. The permanent magnet motor comprises a shell, a stator, a rotating shaft and the rotor, wherein the rotor sleeves the outer side of the rotating shaft, the two ends of the rotating shaft are connectedwith the shell through bearings, the stator is arranged on the inner side of the shell, the stator is in rotation fit with the rotor, and a coil is arranged on the inner wall of the stator. The permanent magnets and the small