Radial vibration piezoelectric ceramic transformer with multiple output ends

A piezoelectric ceramic and radial vibration technology, applied in the field of transformers, can solve the problem of inability to generate multiple different output voltages, and achieve the effect of improving the heating problem and realizing the resonance frequency.

Inactive Publication Date: 2016-11-23
SHAANXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the existing piezoelectric ceramic transformers, there is basically only one input terminal and one output terminal, and it is impossible to generate multiple different output voltages

Method used

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  • Radial vibration piezoelectric ceramic transformer with multiple output ends
  • Radial vibration piezoelectric ceramic transformer with multiple output ends
  • Radial vibration piezoelectric ceramic transformer with multiple output ends

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Such as figure 1 As shown, the structural diagram of the radially vibrating piezoelectric ceramic transformer with multiple output terminals of the present invention is composed of multiple piezoelectric ceramic rings and metal rings compounded in the radial direction, wherein two adjacent piezoelectric ceramic A metal ring is arranged between the rings, any one of the piezoelectric ceramic rings is selected as an input end, and each of the other piezoelectric ceramic rings constitutes an output end respectively, and the inner and outer cylindrical surfaces of the piezoelectric ceramic rings are Both are plated with silver electrodes and polarized in the radial direction. The axial height of the piezoelectric ceramic ring is equal to that of the metal ring, and the upper and lower end faces are in the same plane. The axial height is less than the maximum diameter of the piezoelectric ceramic ring. one fifth.

[0024] The present invention adopts the composite of multi-...

Embodiment 2

[0026] On the basis of Embodiment 1, the piezoceramic rings are all made of emissive piezoceramic materials with high piezoelectric coefficients, such as PZT-4 or PZT-8, which require low dielectric loss and mechanical loss of the material, Good elasticity, high electromechanical conversion coefficient, high Curie temperature, and high temperature stability; the metal ring is made of any material such as aluminum alloy, aluminum-magnesium alloy, titanium alloy, and copper. The material is required to have good elasticity, low loss, and vibration Good transmission performance and strong heat transfer performance to increase the heat dissipation performance of the transformer.

[0027] The piezoelectric ceramic ring and the metal ring are bonded by high-strength glue, or by strictly controlling the size of the piezoelectric ceramic ring and the metal ring, and making use of the thermal expansion and contraction characteristics of different materials to make each part tightly com...

Embodiment 3

[0029] On the basis of the above examples, if figure 1 As shown, the figure shows a piezoelectric ceramic transformer composed of three piezoelectric ceramic rings and two metal rings. From the outside to the inside, the output piezoelectric ring 2 1, the metal ring 2 , and the output Piezoelectric ring one 3, metal ring one 4 and input piezoelectric ring 5.

[0030] When an alternating voltage Vi is applied to the inner and outer surfaces of the input piezoelectric ring 5 of the piezoelectric transformer, the piezoelectric transformer will generate mechanical vibration by virtue of the inverse piezoelectric effect. When the driving voltage frequency of the piezoelectric ceramic transformer is equal to the resonance frequency of the piezoelectric ceramic transformer, the mechanical vibration of the transformer reaches the maximum. At this time, the input power and efficiency of the transformer reach the maximum, and the piezoelectric ceramic transformer should work at its reso...

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Abstract

The invention belongs to the transformers and particularly relates to a radial vibration piezoelectric ceramic transformer with multiple output ends. The transformer is compounded by a plurality of piezoelectric ceramic circular rings and metal circular rings, wherein one metal circular ring is disposed between two adjacent piezoelectric ceramic circular rings; any one of the piezoelectric ceramic circular rings is selected as an input end, and the rest of piezoelectric ceramic circular rings respectively form one output end; and silver electrodes are plated on inner and outer cylindrical surfaces of the piezoelectric ceramic circular rings, and the piezoelectric ceramic circular rings are polarized along the radial direction. As compounding of multi-layer piezoelectric ceramic circular rings and metal circular rings is employed, multi-port electric signal input and output of the piezoelectric ceramic transformer are realized, and thus functions of multi-tap and multi-output signal of a signal piezoelectric ceramic transformer are realized.

Description

technical field [0001] The invention belongs to transformers, in particular to a radial vibration piezoelectric ceramic transformer with multiple output terminals. Background technique [0002] At present, the traditional way to increase or decrease the alternating voltage is to use an electromagnetic transformer. An electromagnetic transformer is mainly composed of an iron core and a coil surrounding the iron core. In an electromagnetic transformer, the primary and secondary coils are electromagnetically coupled through a magnetic core. In some electrical and high-power electronic applications, large electromagnetic transformers are very effective. However, with the development of science and technology and the miniaturization of electronic devices, many applications in the electronics industry require high-efficiency components with small dimensions, so the demand for small high-efficiency transformers is increasing. Due to its inherent reasons, such as the skin effect ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L41/107H10N30/40
CPCH10N30/40
Inventor 林书玉徐洁
Owner SHAANXI NORMAL UNIV
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