The invention relates to the technical field of power-assisted bicycles, in particular to a coaxial middle motor for a power-assisted bicycle, which comprises a motor shell, a power assisting device mounted in the motor shell, a hollow power output shaft and a manpower driving shaft integrated with a torque sensor, the manpower driving shaft is in driving connection with the hollow power output shaft through a manpower driving clutch; the power assisting device comprises a control system, a speed reducing mechanism, a motor stator and a motor rotor, and the motor rotor outputs torque to the hollow power output shaft through the speed reducing mechanism and the electric drive clutch. The control system can collect the magnitude of manpower driving force and pedaling frequency through the manpower driving shaft, and judges the magnitude of required electric driving torque according to the magnitude of the manpower driving force through data analysis, so that the current provided for the motor stator is changed, and the motor rotor is matched with proper output torque and rotating speed; therefore, the purpose that electric drive intervention is smoother is achieved. The device has the effect of achieving simultaneous driving of electric power and manpower.
本申请涉及助力自行车的技术领域,尤其是涉及一种助力自行车用同轴式中置电机,其包括电机壳体、安装于电机壳体内的助力装置、空心动力输出轴以及集成力矩传感器的人力驱动轴;人力驱动轴通过人力驱动离合与空心动力输出轴驱动连接;助力装置包括控制系统、减速机构、电机定子和电机转子,电机转子通过减速机构与电力驱动离合向空心动力输出轴输出扭矩。控制系统可以通过人力驱动轴采集人力驱动力度大小与踏频,并经过数据分析根据人力驱动力度大小判断所需电力驱动力矩大小,从而改变向电机定子提供的电流,以给电机转子匹配合适的输出扭矩和转速,以达到使电力驱动介入更加平顺的目的。本申请具有实现电力和人力的同时驱动的效果。
Coaxial centrally-mounted motor for power-assisted bicycle
一种助力自行车用同轴式中置电机
2024-11-29
Patent
Electronic Resource
Chinese
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