High-frequency excitation piezoelectric-electromagnetic composite power generation device for rail / road

Abstract

A kind of high-frequency excitation piezoelectric-electromagnetic composite power generation device for track / road belongs to mechanical vibration energy capture and power generation technical field, the present application is to solve the problem of low output efficiency of existing power generation device under high-frequency vibration excitation.The device composition includes pressing plate, spring, guide rod, T-shaped plate, connecting rod mechanism, piezoelectric beam, permanent magnet, coil, limiting structure and wire.When external excitation acts on the pressing plate, the pressing plate moves down quickly and drives the bottom T-shaped plate to move, and then causes the two sides connecting rod mechanism to arch and act on the piezoelectric beam to cause its bending deformation and output electric energy.At the same time, the permanent magnet at the bottom of the T-shaped plate interacts through magnetic force to cause the change of magnetic flux of the coil and output electric energy.When external excitation ends, the pressing plate and T-shaped plate rise quickly under the action of spring elastic restoring force and reset, waiting for the next external excitation.The device can be widely used in track / road and other high-frequency vibration scenes for energy capture and power generation.

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