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Piezoelectric vibration battery device

A battery device, piezoelectric vibration technology, applied in generators/motors, piezoelectric effect/electrostrictive or magnetostrictive motors, electrical components, etc., can solve the problems of low power generation efficiency and narrow frequency range

Inactive Publication Date: 2010-10-13
边义祥
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned invention patents all use the mechanical vibration of a single piezoelectric cantilever beam to generate electrical energy. Due to the structural limitations of the system, only a certain frequency of external mechanical vibration can be converted into electrical energy. The power generation efficiency is low and the frequency range is narrow. Power supply for microelectronic systems

Method used

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  • Piezoelectric vibration battery device
  • Piezoelectric vibration battery device
  • Piezoelectric vibration battery device

Examples

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Embodiment Construction

[0022] figure 1 The structure of the piezoelectric element including the piezoelectric material 2 , the first electrode 1 and the second electrode 3 is described. Among them, the first electrode 1 and the second electrode 3 are coated on both sides of the piezoelectric material, and the piezoelectric material is located in the middle of the two electrodes, similar to a sandwich structure; the polarization direction of the piezoelectric material is parallel to the thickness direction. Due to the positive piezoelectric effect, when the piezoelectric element is subjected to stress strain, charges and voltages will be generated on the electrodes.

[0023] figure 2 and image 3 A front view and a top view of a cantilever plate structure with multiple piezoelectric elements pasted on both sides are described, at least one piezoelectric element 4 is pasted on the cantilever plate 5 through an adhesive layer. The bending resonant frequency of the cantilever plate is jointly determ...

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Abstract

The invention provides a piezoelectric vibration battery device, which relates to a piezoelectric electricity generator. The piezoelectric vibration battery device comprises a case (7), a plurality of suspended wall plates (5) and mass blocks (6), wherein the suspended wall plates (5) are arranged on the inner side of the case, the mass blocks (6) are connected with the case through the suspended wall plates, at least one piezoelectric element (4) is respectively pasted at both sides of the suspended wall plates, a rectifier (10), a charging controller (11) and an energy storage element (12) are also arranged in the case (7), one end of the case (7) is connected with the energy storage element (12) to be used as a positive electrode (8) of the battery, and the other end of the case (7) is connected with the energy storage element (12) to be used as a negative electrode (13) of the battery. The invention can convert the vibration mechanical energy of the environment into electric energy for replacing the ordinary battery to supply electricity to mobile electronic equipment, the battery charging or battery replacement can be avoided, and the application amount of the traditional chemical battery is reduced.

Description

technical field [0001] The present invention relates to piezoelectric power generating devices, a device that converts vibrational mechanical energy of the environment into electrical energy. Background technique [0002] The piezoelectric generator can convert the vibration mechanical energy of the surrounding environment or the human body into electrical energy to supply power for electronic equipment, so that the electronic equipment does not need to frequently replace the battery or charge the battery frequently, which improves the maintenance-free nature of the electronic equipment. Its typical applications include providing power for wireless electronic devices such as wireless sensors or wireless sensor networks, or mobile electronic devices such as mobile phones and flashlights. It has important application values ​​in both national defense and civilian fields. [0003] The working principle of piezoelectric power generation is based on the positive piezoelectric eff...

Claims

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Application Information

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IPC IPC(8): H02N2/18
Inventor 边义祥
Owner 边义祥
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