To provide a new electric motor for driving a vehicle, which is a self-ventilated motor while being particularly quiet during high-speed rotation of a rotor.SOLUTION: An electric motor for driving a vehicle comprises: a stator (1); a rotor (3) designed to rotate at a speed w3 greater than 5000 revolutions per minute, relative to the stator (1), by power supply to the electric motor for driving a vehicle; a fan (5) designed to rotate at a speed w5, relative to the stator (1), to ventilate the motor; and a magnetic reducer (7), through which the rotor (3) drives the fan (5) in rotation, the magnetic reducer (7) being designed to transmit the rotation of the rotor (3) to the fan (5) with a reduction ratio [Formula 5] R=w5/w3. In order for the self-ventilated motor to be particularly quiet at high speed, the absolute value of the reduction ratio R is less than or equal to 0.85, preferably equal to approximately 0.5.SELECTED DRAWING: Figure 1
【課題】自己送風型でありながら、回転子の高速回転時にとりわけ静音である新しい車両駆動用電気モータを提供する。【解決手段】固定子(1)と、車両駆動用電気モータへの給電によって固定子(1)に対して毎分5000回転超の速度w3で回転するように設計された回転子(3)と、モータへの送風のために固定子(1)に対して速度w5で回転するように設計されたファン(5)と、回転子(3)によるファン(5)の回転駆動を仲介する磁気減速装置(7)であって、回転子(3)の回転を減速比[式5]R=w5/w3でファン(5)に伝達するように設計された磁気減速装置(7)とを備える車両駆動用電気モータ。自己送風型モータが高速でとりわけ静音であるようにするため、減速比Rの絶対値は0.85以下、好ましくは約0.5である。【選択図】図1
ELECTRIC MOTOR FOR DRIVING VEHICLE
車両駆動用電気モータ
2021-05-20
Patent
Electronic Resource
Japanese
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