Frequency-adjustable broadband piezoelectric electromagnetic composite power generation device with elastic amplifier
A power generation device and electromagnetic composite technology, which is applied in the direction of piezoelectric effect/electrostrictive or magnetostrictive motors, electromechanical devices, generators/motors, etc., can solve the problems of L-shaped beam breakage and short service life of the device. Achieve the effects of increased amplitude, low cost and simple mechanical structure
Active Publication Date: 2021-08-27
BEIJING UNIV OF TECH
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Problems solved by technology
The invention has a simple structure and is easy to implement, but under the action of external excitation, the L-shaped beam is more likely to break, and when the external excitation is relatively large, the service life of the device will be very short
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Embodiment 1
[0033]This embodiment describes a frequency-tunable broadband piezoelectric-electromagnetic composite power generation device with an elastic amplifier.
[0034] figure 1 The specific components of a frequency-tunable broadband piezoelectric-electromagnetic composite power generation device with an elastic amplifier are shown.
[0035] figure 1 A frequency-adjustable broadband piezoelectric electromagnetic composite power generation device with an elastic amplifier shown in , includes: 1 is a coil, 2 is the bottom plate of the enlarged frame, 3 is a movable trolley, 4 is a hinge support, and 5 is an outstretched beam pressure Electric energy harvester, 6 is the positive wire, 7 is the cantilever beam piezoelectric energy harvester, 701 is the electrode, 702 is the piezoelectric ceramic, 703 is the cantilever beam, 8 is the baffle plate of the enlarged frame, 9 is the negative wire, 10 is the single chip microcomputer Controller, 11 is the permanent magnet A, 12 is the side p...
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The invention discloses a frequency-adjustable broadband piezoelectric electromagnetic composite power generation device with an elastic amplifier, and belongs to the technical field of piezoelectric power generation and sustainable development of new energy. The device is composed of an elastic amplifier, a bistable piezoelectric energy collection device, an electromagnetic power generation device, a frequency modulation device, a cantilever beam, piezoelectric ceramics, a base, a positive wire and a negative wire. The adopted elastic amplifier can effectively improve the amplitude of vibration and increase the energy collection efficiency, the frequency modulation device can effectively adjust the inherent frequency of the power generation device, the inherent frequency of the designed power generation device is completely matched with the vibration frequency of the surrounding environment, output electric energy is maximized, broadband piezoelectric energy collection can be effectively achieved, piezoelectric and electromagnetic composite power generation can be effectively achieved, the energy collection efficiency is improved, and the device is simple in structure, low in cost and easy to popularize.
Description
technical field [0001] The invention is a frequency-adjustable broadband piezoelectric-electromagnetic composite power generation device with an elastic amplifier, which can effectively collect vibration energy in the environment and convert it into electric energy, and belongs to the technical field of piezoelectric power generation and sustainable development of new energy. Background technique [0002] With the development of integrated circuits, the size and power consumption of electrical equipment have dropped sharply. In the 21st century, the global economy is booming, and the consumption of energy is also increasing. Because the total amount of traditional energy is limited, and the large-scale use of traditional energy will also bring a series of environmental pollution problems. Therefore, the research on capturing energy from the surrounding environment has very important practical significance. There are mainly solar energy, wind energy, vibration energy, etc. i...
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IPC IPC(8): H02N2/18H02K35/04
CPCH02N2/186H02K35/04Y02E10/72
Inventor 毛佳佳刘爽张伟曹东兴
Owner BEIJING UNIV OF TECH