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

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.

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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Problems solved by technology

[0004] In order to solve the problem of poor practicability of low-velocity micro-flow based on traditional tidal current energy utilization devices in the background technology, the present invention combines the piezoelectric power generation characteristics of new piezoelectric materials and designs a dual-rotor micro-flow energy based on piezoelectric effect. The energy-harvesting power generation device is a dual-rotor energy-harvesting structure, which can effectively extract low-velocity micro-current energy; the present invention uses a piezoelectric structure to capture micro-current energy under the impact of micro-currents, reducing the minimum generating current speed, and the dual-rotor structure The design can effectively increase the vibration frequency of the piezoelectric sheet under the action of micro-flow, and improve the power generation efficiency of the device

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