A Multidirectional Vibration Piezoelectric Energy Harvesting Device

Abstract

The invention discloses a multi-directional vibration piezoelectric energy collecting device. The device comprises a fixing device, a vibration mass, four piezoelectric vibrators and an energy storagecomponent. The vibration mass is mounted on the bottom plate or / and the top plate of the fixing device through a spring. The piezoelectric vibrators are T-shaped or L-shaped, piezoelectric sheets arerespectively arranged on vertical beams and cross beams of the piezoelectric vibrators, and the piezoelectric sheets are disposed at the roots where each vertical beam and each cross beam are fixed;the cross beams of the four piezoelectric vibrators are respectively connected to the vibration mass through fastening clamps, and the four piezoelectric vibrators are located outside the vibration mass; the piezoelectric sheets of the piezoelectric vibrators are connected to the energy storage element through a wire. The spring in the fixing device can amplify the vibration in the environment, and improves the sensitivity of the device to the vibration in the environment; the piezoelectric vibrators can collect vibration energy in three directions of x, y and z, for the case of the complex vibration in the environment, can also absorb energy, and convert the energy into electrical energy for use.

Description

technical field [0001] The invention belongs to the technical field of energy recovery and utilization, and in particular relates to a multi-directional vibration piezoelectric energy collection device. Background technique [0002] Using the energy in the environment to provide real-time power for portable micro-power appliances and wireless sensors has become a research hotspot in the world. Among them, piezoelectric energy harvesting devices are widely used because of their simple structure, easy fabrication into various required sizes and shapes, easy integration with microsystems, and placement inside microelectromechanical systems. However, the vibration direction in the actual environment is uncertain, and the vibration directions are different. The traditional piezoelectric energy harvesting device can only capture the vibration energy in a single direction, which limits the application of piezoelectric energy harvesting devices. Contents of the invention [0003]...

AI Technical Summary

Problems solved by technology

However, the vibration direction in the actual environment is uncertain, and the vibration directions are different. Traditional piezoelectric energy harvesting devices can only capture vibration energy in a single direction, which limits the application of piezoelectric energy harvesting devices.

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