Piezoelectric element variable temperature polarization device and method

A technology of piezoelectric elements and components, which is applied in the field of piezoelectric element variable temperature polarization devices, can solve the problems of loss of piezoelectric performance, piezoelectric performance reduction of piezoelectric elements, etc., to reduce the loss of piezoelectric performance, quickly cool down, and avoid degradation The effect of polarization

Active Publication Date: 2022-05-13
GOERTEK MICROELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, after the polarization is completed and the power is turned off, the high temperature will cause the piezoelectric ceramics to depolarize and lose a certain piezoelectric performance, resulting in a decrease in the piezoelectric performance of the piezoelectric element.

Method used

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  • Piezoelectric element variable temperature polarization device and method
  • Piezoelectric element variable temperature polarization device and method
  • Piezoelectric element variable temperature polarization device and method

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Embodiment Construction

[0051] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0052] It should be noted that if there is a directional indication (such as up, down, left, right, front, back...) in the embodiment of the present invention, the directional indication is only used to explain the position in a certain posture (as shown in the accompanying drawing). If the specific posture changes, the directional indication will also change accordingly.

[0053]In addition, if there are descriptions involving "first", "second" and s...

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Abstract

The invention discloses a piezoelectric element temperature-variable polarization device and method. The piezoelectric element temperature-variable polarization device includes: a control assembly, the control assembly includes a pressurization unit and a control unit, and the pressurization unit and the control unit are electrically connected a polarization pool, the polarization pool is used to contain silicone oil; and a polarization assembly, the polarization assembly includes a fixed seat and a moving assembly connected to the fixed seat, the pressurizing unit is electrically connected to the fixed seat, The moving assembly is electrically connected with the control unit, and the moving assembly drives the fixed seat to move into or out of the silicone oil in the cavity. The temperature-variable polarization device of the piezoelectric element of the present invention aims to realize rapid cooling without reducing the piezoelectric performance.

Description

technical field [0001] The invention relates to the technical field of piezoelectric element polarization, in particular to a temperature-variable polarization device and method for piezoelectric elements. Background technique [0002] Piezoelectric elements currently on the market, especially piezoelectric ceramics, need to go through a polarization process before they can be used. The traditional polarization method is to immerse the piezoelectric element and polarization equipment in an oil bath with a set polarization temperature for polarization, and the polarization temperature remains unchanged during the polarization process. [0003] The main purpose of the polarization process is to make the spontaneous dipoles in the piezoelectric element be oriented by overcoming the coercive field under the drive of the electric field. The coercive field decreases with the increase of temperature, so it is easier to fully polarize at high temperature and obtain good piezoelectr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L41/257
CPCH10N30/045
Inventor 张丹阳俞胜平孙晓铭
Owner GOERTEK MICROELECTRONICS CO LTD
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