基于电磁感应的自行车振动发电装置设计

Design of Bicycle Vibration Power Generation Device Based on Electromagnetic Induction

利用Ansoft进行振动发电机仿真建模,分析永磁体磁场分布、振动速度、振幅和线圈绕组尺寸对输出感应电动势的影响,确定参数,制作样品,装于自行车进行路测实验;在此基础上,于装置底部安设弹簧以增大振幅,再次进行路测实验。结果表明:在普通沥青路面上52.34%的使用时间装置发出的电压值能达到4V以上,实验数据与仿真数据吻合。为增大装置能量利用率,对装置进行再优化,仿真结果表明:改变线圈绕制间隙,或将圆柱形悬浮永磁体改为正十二面体的阵列式悬浮永磁体,都有助于提高装置使用过程中的电压值。

The vibration generator model was built by using Ansoft, the influence of the magnetic field distribution, vibration speed, amplitude and coil winding size of the permanent magnet on the output induced electromotive force were analyzed to determine the parameters. The sample was made for the road test on the bicycle. On this basis, a spring was placed at the bottom of the device to increase the amplitude, and a road test experiment was performed again. The results show that the voltage value of the device can reach more than 4 V within 52.34% of the service time on the ordinary asphalt pave? ment, and the experimental data is consistent with the simulation data. In order to increase the energy utilization rate of the device, the device was reoptimized. The simulation results show that changing the coil winding gap or changing the cylindrical floating permanent magnet to the regular dodecahedral array of floating permanent magnets can help to improve the device.