Nonlinear broadband piezoelectric energy harvester for tire pressure monitoring sensor
A tire pressure monitoring, piezoelectric energy capture technology, applied in piezoelectric effect/electrostrictive or magnetostrictive motors, electrical components, generators/motors, etc., can solve the problem of short service life and narrow energy capture frequency band problems, to achieve the effect of reducing the degree of wear, prolonging the service life and simple structure
Active Publication Date: 2019-05-10
CHANGCHUN UNIV OF TECH
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Problems solved by technology
[0004] In order to solve the problems of narrow energy harvesting frequency band and short service life in existing tire pressure sensor energy supply devices, the present invention discloses a nonlinear broadband piezoelectric energy harvester for tire pressure monitoring sensor energy supply, which is a tire pressure monitoring system The sensor in it provides a new type of environmentally friendly, efficient and stable energy supply device
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[0022] combine Figure 1~Figure 10 This embodiment will be described.
[0023] This embodiment provides a specific implementation scheme of a nonlinear broadband piezoelectric energy harvester for supplying energy to a tire pressure monitoring sensor. The nonlinear broadband piezoelectric energy harvester for supplying energy to tire pressure monitoring sensors includes three parts: an outer casing 1 , a rotating assembly 2 and a piezoelectric generating assembly 3 . The rotating assembly 2 is installed and fixed in the outer casing 1, and the piezoelectric generating assembly 3 cooperates with the installation groove 1-1-2 on the inner wall of the outer casing 1, and is fixed by gluing.
[0024] The outer casing 1 is composed of an encapsulation shell 1-1, a side cover 1-2 and a set screw 1-3, the encapsulation shell 1-1 and the side cover 1-2 cooperate, and are installed and fixed by the set screw 1-3; The bottom center of the package shell 1-1 is provided with a bearing i...
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The invention discloses a non-linear wide-frequency piezoelectric energy harvester for supplying energy to a tie pressure monitoring sensor. By the non-linear wide-frequency piezoelectric energy harvester, the problems of short service lifetime, narrow energy harvest frequency bandwidth and the like of a current piezoelectric power generation device for supplying energy to a tie pressure sensor are solved. The non-linear wide-frequency piezoelectric energy harvester comprises an outer shell, a rotation assembly and a piezoelectric power generation assembly, wherein the rotation assembly and the piezoelectric power generation assembly are fixed in the outer shell, the rotation assembly can be used for converting rotation of wheels to rotation of the rotation assembly, a fan-shaped magnet isdriven to rotate, a magnet at a tail end of the piezoelectric power generation assembly is shifted by the fan-shaped magnet which is rotating, so that the piezoelectric assembly is deformed, and energy capture is further achieved. In the piezoelectric power generation device designed by the invention, the energy capture bandwidth is expanded by non-linear rigidity generated by a non-linear forcebetween the magnets, mechanical impact is substituted by a non-contact magnetic force, the service lifetime of a piezoelectric component is prolonged, and non-linear wide-frequency piezoelectric energy harvester has wide application prospect in the technical field of automobile and energy source utilization.
Description
technical field [0001] The invention relates to a nonlinear wide-band piezoelectric energy harvester for supplying energy to a tire pressure monitoring sensor, which belongs to the technical field of automobiles and energy collection. Background technique [0002] With the development of highways and the continuous improvement of automobile performance, the driving speed of automobiles is getting faster and faster, especially the rapid increase of car ownership, traffic is becoming more and more congested, and accidents are more frequent, so the safety of automobiles has become particularly important . Abnormal tire pressure can easily lead to accidents. In vicious traffic accidents, the proportion of traffic accidents caused by tire blowouts is very high, and insufficient tire pressure is one of the important causes of tire blowouts, which illustrates the importance of tire pressure monitoring systems. The current power supply method for tire pressure sensors is mainly ch...
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IPC IPC(8): H02N2/18
Inventor 卢晓晖马腾程廷海姜雨陈茜炎陈鹏飞
Owner CHANGCHUN UNIV OF TECH