Electromagnetic T-shaped beam vibration energy harvester on basis of rigid and flexible combined structure

Abstract

The invention discloses an electromagnetic T-shaped beam vibration energy harvester on the basis of a rigid and flexible combined structure. The electromagnetic T-shaped beam vibration energy harvester comprises a rigid support plate (5), a magnet (4) and a rigid and flexible combined plate (2). The rigid support plate (5), the magnet (4) and the rigid and flexible combined plate (2) are sequentially arranged from bottom to top; the magnet (4) closely clings to the rigid support plate (5), and a plurality of copper cylinders (3) are uniformly arranged between the rigid support plate (5) and the rigid and flexible combined plate (2), so that gaps can be reserved between the magnet (4) and the rigid and flexible combined plate (2). The electromagnetic T-shaped beam vibration energy harvesterhas the advantages that the electromagnetic T-shaped beam vibration energy harvester is of a movable coil structure; a coil is positioned on a rigid plate portion of the rigid and flexible combined plate, a vibration pickup beam is in a polyimide T-shaped beam design, the effective length of the vibration pickup beam can be prolonged by the design, and the resonance frequencies of the electromagnetic T-shaped beam vibration energy harvester further can be lowered; printed circuit rigid and flexible combination technologies are introduced into the electromagnetic T-shaped beam vibration energyharvester for the first time as compared with other vibration energy harvesters, the electromagnetic T-shaped beam vibration energy harvester has low frequencies as compared with rigid beam harvesters, the requirements on energy harvesting at different mounting angles can be met by the T-shaped beam design, and accordingly the electromagnetic T-shaped beam vibration energy harvester is high in harvesting efficiency.

Description

technical field [0001] The invention relates to an energy harvester, in particular to an electromagnetic T-beam vibration energy harvester based on a rigid-flexible combination structure. Background technique [0002] With the rapid development of integrated circuit technology, electronic products are beginning to be miniaturized, wireless and low-power. New electronic products are gradually developing into new fields such as implantable and wearable. Traditional power supply methods are no longer suitable for such devices with low power consumption and complex working environments. The energy harvesting technology can collect the energy (such as kinetic energy, mechanical energy, thermal energy, light energy, etc.) that is ubiquitous around the environment and convert it into electrical energy, which can replace traditional batteries to power electronic products. [0003] At present, vibration energy harvesters are mainly divided into piezoelectric, electrostatic and elec...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the resonant frequency is too high due to the high beam stiffness of the existing electromagnetic vibration energy harvester, it is difficult to achieve resonance with the external environment to maximize the output power and voltage. Based on the printed circuit rigid-flexible combination processing technology, the present invention provides An electromagnetic T-beam vibration energy harvester based on rigid-flexible structure

Images