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Magnetic force effect-based parallel composite beam piezoelectric-electromagnetic energy capture device

A composite beam and function technology, applied in electromechanical devices, piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, etc., can solve problems such as poor low frequency adaptability, poor environmental adaptability, and low power generation efficiency , to achieve the effect of widening the frequency band, strong adaptability, and wide applicability of broadband

Active Publication Date: 2017-06-23
NANJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

However, the existing piezoelectric vibration power generation devices still have the problems of poor environmental adaptability, low power generation efficiency, poor low frequency adaptability, and small power generation per unit time.

Method used

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  • Magnetic force effect-based parallel composite beam piezoelectric-electromagnetic energy capture device
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  • Magnetic force effect-based parallel composite beam piezoelectric-electromagnetic energy capture device

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Experimental program
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Embodiment Construction

[0026] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0027] Such as figure 1 , figure 2 As shown, the novel piezoelectric structural composite beam includes:

[0028] The center position of the composite beam is a regular quadrilateral with permanent magnets placed, and the cantilever beams a, b, c, and d are isosceles trapezoidal cantilever beams with the same specifications (since the specifications of the cantilever beams a, b, c, and d are all the same , so the following will take the cantilever beam a as an example for illustration). When the shell is excited by the vibration source, the shell can transmit the vibration energy diffused to the surroundings to the cantilever beams a, b, c, d, which can better utilize the environmental vibration energy and improve the energy utilization rate. For the structure of the cantilever beam a, compared with the rectangle, the stress distribution of the...

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Abstract

The present invention discloses a magnetic force effect-based parallel composite beam piezoelectric-electromagnetic energy capture device. The magnetic force effect-based parallel composite beam piezoelectric-electromagnetic energy capture device comprises a shell, two sets of composite beams which are parallel to each other, two permanent magnets and two induction coils; the two induction coils are disposed on the opposite inner side walls of the shell; the two sets of composite beams are disposed between the two induction coils; each set of composite beams comprises a plurality of cantilever beams and a base connected with one end of each of the plurality of cantilever beams, the other ends of the cantilever beams being fixedly connected onto the inner side wall of the shell; the two permanent magnets are arranged on the bases of the two sets of composite beams respectively and directly face the two induction coils respectively; and the upper and lower surfaces of the cantilever beams are provided with piezoelectric sheets. The piezoelectric power generating device of the present invention can be more adaptive to random, broadband, low-frequency, large-amplitude and high-intensity vibration energy recovery in the environment.

Description

technical field [0001] The invention relates to the technical field of new energy, in particular to a parallel composite beam piezoelectric-electromagnetic energy harvesting device based on magnetic force. Background technique [0002] The rapid development of information technology has not driven the rapid development of power supply technology, and the energy density of power supply has not improved significantly. Although chemical energy batteries are widely used due to their convenience, problems such as environmental pollution, difficulty in recycling, and waste of materials are becoming more and more prominent. Therefore, the search for alternative energy sources has become a hot topic in today's research. One possible approach is to capture energy from ambient vibrations. Around our living environment, there are various waste energies, such as solar energy, pressure energy, mechanical vibration energy and so on. Although solar energy and pressure energy have relati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N2/18H02K35/02
CPCH02K35/02H02N2/188
Inventor 江兵徐红斌刘毅臧鑫善廖沁祎
Owner NANJING UNIV OF POSTS & TELECOMM
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