Omnidirectional piezoelectricity electromagnetic composite wave energy acquiring device

Abstract

The invention provides an omnidirectional piezoelectricity electromagnetic composite wave energy acquiring device, and belongs to the field of energy collecting device designing and manufacturing. A spherical housing is divided into an upper shell and a lower shell, wherein threads which are in mutual cooperation are formed in the openings of the upper shell and the lower shell; the top surface ofthe inner part of the upper shell is a plane, and is provided with four threaded holes; the upper parts of a left spherical hinging seat and a right spherical hinging seat are slabs and are providedwith a pair of screw hole structure, and the lower parts of the left spherical hinging seat and the right spherical hinging seat are provided with a semispherical cavity; the upper part of a pendulumswinging rod is a spherical body, and the lower part of the pendulum swinging rod adopts a round cake shaped structure; a circular permanent magnet is embedded on the lower surface of the round cake shaped structure; the spherical body at the upper part is fixed to the top surface in the upper shell through the clearance fit of the two combined semispherical cavities in the lower parts of the leftspherical hinging seat and the right spherical hinging seat; a part of which the height is one third of that of the inner part of the lower shell, of the lower shell is a plane formed by a solid sphere; grooves which are formed in a regular hexagon shape are annularly formed; the lower parts of bimorph piezoelectricity pieces are embedded in the grooves; and a copper coil is embedded on a plane in the lower shell.

Description

technical field [0001] The invention belongs to the field of design and manufacture of energy harvesting devices. Background technique [0002] With the gradual increase of energy consumption, the problem of energy shortage has become a hot spot that everyone pays attention to. In order to solve the energy problem, energy harvesting technology has been extensively studied, and it is hoped that by harvesting the energy present in the environment, it can be used to power various electronic devices. With 70 percent of the Earth's surface covered by oceans, blue energy holds great promise for powering wireless sensors. Wave energy is one of the main sources of blue energy, which represents the energy provided by water waves, tides, and oceans. The wave is characterized by random and irregular vibrations, and its ultra-low frequency is less than 10hz, or even 1hz. There are three main methods of converting wave energy into electricity: electromagnetic, piezoelectric, and mecha...

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Problems solved by technology

[0003] According to the search, there have been related wave energy harvesting devices, such as the Chinese patent application number 201911017952.3 "a compound pendulum up-frequency wave energy harvesting device", which drives the generator to generate electricity through the compound pendulum mechanism and the rotation of the gears. At the same time, the piezoelectric sheet is driven to generate electricity through the interaction between the magnetic poles. The device undergoes various forms of motion transmission, so the power generation efficiency is not high, and it also increases the complexity of the system.

[0004] Another example is the Chinese Patent Application No. 201910767444.0, which discloses "a fully enclosed eccentric pendulum wave energy power generation system and its sea state adaptive power generation method". This patent uses a hydraulic device to realize the self-adaptive adjustment of the device to adapt to different wave conditions Conditions, but the structure of the device is complex, not suitable for relatively calm water conditions, which limits the application of the device

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