| 摘要 |
An electric vehicle of the present invention comprises a battery; a motor case which includes a motor driven by the battery and an inner space for receiving oil; a stator which is hollow, positioned in the inner place, and has a coil; a rotor which has a magnet rotating inside the stator; and a cooling jacket which has a spiral cooling unit positioned between the stator and the motor case and winding in the shape of a spiral. The direct contact of the oil and the cooling jacket enables excellent heat exchange and cooling effect. |
