The utility model discloses a permanent-magnet brushless DC electric machine for electric vehicles, which comprises a stator, a rotor, a hall sensor, and a control circuit, wherein, the stator is provided with a tooth slot, and a winding is inserted into the tooth slot; the top part of the winding is provided with a slot wedge which is used for fixing the winding; a permanent-magnet magnetic pole is arranged on the rotor; the hall sensor and the control circuit are electrically connected with each other; the hall sensor is arranged in the tooth slot. The utility model does not need adding the length of the permanent magnet, sensor rotors are not additionally arranged on the utility model, so materials can be saved, the structure and the technology become simple, the manufacture is convenient, so the cost of the manufacture is reduced.