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Piezoelectric generating set

A technology of piezoelectric power generation and piezoelectric ceramic sheets, which is applied in piezoelectric/electrostrictive/magnetostrictive devices, generators/motors, piezoelectric effect/electrostrictive or magnetostrictive motors, etc., can solve Problems such as low power generation voltage, high manufacturing difficulty, and easy damage can achieve the effects of increasing power generation current, long service life, and convenient processing

Inactive Publication Date: 2010-12-29
刘兴中
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the material of the piezoelectric ceramic sheet is ceramic, further thinning its thickness is not only difficult to manufacture, but also easy to break, which limits the increase in the amount of electric charge generated.
Moreover, the voltage generated by the piezoelectric ceramic sheet is proportional to the deformation of the piezoelectric ceramic sheet, that is, the amount of expansion and contraction, and the thickness of the ceramic. Therefore, if the piezoelectric power generation device as described above is connected to multiple LED lights, the generated voltage will be too low. normal lighting
In this case, there is a certain requirement for the thickness of the piezoelectric ceramic sheet, and the existing technology cannot meet the requirement

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0015] As shown in 1, the piezoelectric generator comprises a glass epoxy resin substrate 1 with a thickness of 1 millimeter pasted copper foil, a piezoelectric ceramic sheet 2 fixed on the upper surface of the substrate 1, and the thickness of the piezoelectric ceramic sheet 2 is is 0.6 mm; the piezoelectric ceramic sheet can also be pasted on the lower surface of the substrate 1 . An aluminum bump 3 with a thickness of 0.1 mm is fixed on the lower surface of the left end of the substrate 1; a synthetic rubber pad 4 is pasted on the lower surface of the substrate 1, and the rubber pad 4 is located on the bottom of the piezoelectric ceramic sheet 2. Below and its area is greater than the area of ​​piezoelectric ceramic sheet 2. The piezoelectric generator can amplify the pressure applied to the piezoelectric ceramic sheet 2 and the substrate 1 by several times through the bump 3, so the generated current can be greatly increased without changing the thickness and area of ​​the...

Embodiment 2

[0017] like figure 2 As shown, in this embodiment, the piezoelectric ceramic sheet 2 with a laminated structure that can further increase the generated current is adopted, and bumps 3 are fixed on the left and right ends of the lower surface of the substrate 1, so that the piezoelectric ceramic sheet 2 When the force is applied to the substrate 1, the left, middle and right points can be simultaneously stressed, which reduces the force directly applied to the piezoelectric ceramic sheet 2, effectively protects the piezoelectric ceramic sheet, avoids damage to the piezoelectric ceramic sheet, and prolongs the life of the piezoelectric ceramic sheet. its service life. All the other are with embodiment 1.

[0018] like figure 2 The piezoelectric power generating device shown in the example, under the same force, the current generated by it is further increased compared with the first embodiment.

Embodiment 3

[0020] like image 3 As shown, this embodiment is an application example of Embodiment 2 of the present invention. The piezoelectric generator 5 in Embodiment 2 is applied to sports shoes. The piezoelectric generator 5 can be connected to 30 LED lights 6 at the same time. The pressure exerted by the heel on the piezoelectric generating device 5 can make 30 LEDs emit light at the same time, and the thickness and size of the piezoelectric generating device 5 are installed in the sole of the sports shoe, and there is no foreign body discomfort after wearing it.

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Abstract

The invention relates to a piezoelectric generating set, which comprises a baseplate and a piezoelectric ceramic plate fixedly arranged on the surface of the baseplate, and is characterized in that at least a projection is also arranged at the end part of the baseplate. The piezoelectric ceramic plate can be arranged on the upper surface of the baseplate and can also be arranged on the lower surface of the baseplate; the projection is generally arranged on the lower surface of the baseplate. When the baseplate is pressed, the pressure can be magnified multiple times by adopting the design of the projection which is arranged on the end part of the baseplate, thereby enlarging the power generation current and the power generation voltage of the piezoelectric generating set by adopting the small-scale piezoelectric ceramic plate without changing the area and the thickness of the piezoelectric ceramic plate.

Description

technical field [0001] The invention relates to the field of piezoelectric material power generation, in particular to a small piezoelectric power generation device. Background technique [0002] Piezoelectric materials have a positive piezoelectric effect and an inverse piezoelectric effect, and the positive piezoelectric effect converts mechanical energy into electrical energy. The application of using piezoelectric materials to generate electricity is currently being popularized. For example, the combination of piezoelectric power generation devices and light-emitting diodes (LEDs) can be placed in the soles of shoes. As people walk, the mechanical energy of human body movement is converted into electrical energy and emits light. ; Or it can be applied to the highway, using the vibration of the highway to generate electricity and light up the decorative lights. Like this kind of piezoelectric generator, the electric charge generated is inversely proportional to the thick...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02N2/00H01L41/187H10N30/853
Inventor 刘兴中
Owner 刘兴中
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