Rotary piezoelectric cantilever energy harvester
A cantilever beam, rotary technology, applied in piezoelectric/electrostrictive or magnetostrictive motors, electrical components, generators/motors, etc., to avoid damage
Inactive Publication Date: 2015-03-04
XIAMEN UNIV
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Problems solved by technology
[0003] To solve the above technical problems, the present invention provides a rotary piezoelectric cantilever beam energy harvester to solve the problem of converting mechanical energy into electrical energy through the piezoelectric effect in the rotary motion in which the rotary surface is perpendicular to the ground, and provides a monitoring system for the rotary motion. energy required
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[0023] The present invention will be further described in conjunction with the accompanying drawings and specific embodiments.
[0024] As a specific example, such as Figure 1 to Figure 9 As shown, a rotary piezoelectric cantilever energy harvester of the present invention includes a disc base 1, a housing 5, a piezoelectric cantilever 15 and a collecting circuit board 19, and the housing 5 is fixedly arranged on the base 1 , the housing 5 is a rectangular hollow housing 5, and the bottom of the short side of the rectangular hollow housing 5 extends out of the mounting plate 53 respectively, each of the mounting plates 53 is provided with two mounting holes 531, the rectangular hollow shell The bottom of the middle position on both sides of the long side of the body 5 extends out the mounting platform 54 respectively, and each of the mounting platforms 54 is provided with a mounting hole 541. 4. The screws 6, 9, 13 and 17 pass through the installation holes 531, 541 to reali...
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The invention relates to the technical field of new energy generation technology, measurement and testing, and specifically relates to a rotary piezoelectric cantilever energy harvester. The rotary piezoelectric cantilever energy harvester comprises a base, a housing, a piezoelectric cantilever and a collecting circuit board, wherein the housing which is a rectangular hollow housing is fixedly arranged on the base; a crack opening is formed in one side of the rectangular hollow housing; a positioning plate outwards extends from each of two sides of the crack opening; the piezoelectric cantilever comprises an aluminum alloy base plate, and piezoelectric units arranged at two sides of the aluminum alloy base plate; one end of the aluminum alloy base plate is clamped into the crack opening and the two positioning plates and is fixedly connected with the two positioning plates; two mass blocks are fixedly connected to two sides of the free end of the aluminum alloy bas e plate; the free end of the aluminum alloy base plate and the two mass blocks connected with the free end are positioned on a rotating shaft of the base; the collecting circuit board is fixed to the outer surface of one sidewall of the housing. With the adoption of the rotary piezoelectric cantilever energy harvester, the centrifugal force of a centroid under rotating can be minimized, and thus the problem that the rigidity of the cantilever is increased and the vibration amplitude is reduced due to the large centrifugal force can be decreased.
Description
technical field [0001] The invention relates to the fields of new energy power generation technology and measurement and testing technology, in particular to a rotary piezoelectric cantilever beam energy harvester, which can be used for energy recovery in high-speed rotary motion. Background technique [0002] Rotary motion is a very common form of mechanical motion. In many applications, the working condition monitoring of the rotating system is particularly important. In the process of working status monitoring, a key issue is to obtain the operating information of the detected system to judge the working status of the system, so the transmission of information becomes very important. In practical applications, wireless communication is usually used for information transmission. In these applications, non-rechargeable batteries are generally required to power the monitoring system. Due to the limited service life of the batteries, users inevitably need to replace these ...
Claims
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IPC IPC(8): H02N2/18
Inventor 关明杰廖维新李营泰
Owner XIAMEN UNIV