Birotor micro-flow energy capturing power generation device based on piezoelectric effect

A piezoelectric effect, power generation device technology, applied in the field of dual-rotor micro-flow energy capture energy generation devices, can solve the problems of poor practicability of low-velocity micro-flow, reduce the minimum power generation flow rate, etc., to expand the flow rate capture range, increase the oscillation frequency, The effect of high energy density

CN113676079APending Publication Date: 2021-11-19ZHEJIANG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2021-11-19

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Abstract

The invention discloses a birotor micro-flow energy capturing power generation device based on a piezoelectric effect. The inner ring paddle and the outer ring paddle are coaxially and movably arranged in a sleeved mode and rotate relative to each other, sheet-shaped magnetic piezoelectric assemblies and magnetic steel which are evenly distributed at intervals in the circumferential direction are arranged in an annular gap between the inner ring paddle and the outer ring paddle, the multiple magnetic piezoelectric assemblies are connected to the inner circumferential face of the outer ring paddle in a cantilever beam mode, and the magnetic piezoelectric assemblies and the magnetic steel are matched in a magnetic repulsion mode. The outer side edge of the magnetic piezoelectric assembly is axially arranged; the inner and outer ring paddles rotate relatively to drive the magnetic piezoelectric assembly and the magnetic steel to rotate relatively, so that the magnetic piezoelectric assembly is driven to vibrate in a reciprocating manner to generate mechanical energy, and the mechanical energy is converted into electric energy. The piezoelectric structure is adopted to capture microflow energy, the lowest power generation flow speed is reduced, the oscillation frequency of the piezoelectric plate under the microflow effect can be effectively improved through the double-rotor structure design, and the power generation efficiency of the device is improved.
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Description

technical field

[0001] The invention relates to a microcurrent energy generating device, in particular to a piezoelectric effect-based dual-rotor microcurrent energy harvesting and generating device. Background technique

[0002] Ocean observation is the basis for research, development and utilization of the ocean, and it is also a necessary basic measure for developing the economy, exploiting marine resources, and carrying out marine risk avoidance and disaster relief. With the advent and development of the "Information Age", acquiring, disseminating and using marine information has become the prerequisite for all marine activities.

[0003] However, at present, one of the main bottlenecks that restricts the establishment of a comprehensive ocean observation system in my country, especially for deep-sea observation systems, is the lack of effective energy supply means. Ocean observation equipment such as sea buoys, autonomous unmanned submersibles, underwater gliders, The e...

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with drawings and embodiments.

[0032] Such as figure 1 As shown, the specific implementation device includes an outer ring blade 1, an inner ring blade 2, a magnetic piezoelectric assembly and a magnetic steel 6; the inner ring blade 2 is movably fitted in the middle of the outer ring blade 1, and the inner ring blade 2 and The outer ring blades 1 are coaxially arranged and relatively rotated, and there is an annular gap between the inner ring blades 2 and the outer ring blades 1, and a plurality of sheet-shaped magnetic piezoelectric components and a plurality of magnetic steels 6 are arranged in the annular gap , a plurality of piezoelectric magnetic components are arranged at intervals along the circumferential direction of the annular gap, and the sheet-shaped outer sides of the plurality of piezoelectric magnetic components are fixedly connected to the inner peripheral surface of the outer ring ...