CN217508625U - Combined type vibration energy collection device - Google Patents
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- CN217508625U CN217508625U CN202221096216.9U CN202221096216U CN217508625U CN 217508625 U CN217508625 U CN 217508625U CN 202221096216 U CN202221096216 U CN 202221096216U CN 217508625 U CN217508625 U CN 217508625U
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Abstract
The utility model relates to a combined type vibration energy collection device belongs to the vibration energy field of collecting, specifically includes shock-absorbing structure, friction nanometer power generation facility, electromagnetism power generation facility, fixing device, internal circuit. An aluminum electrode and a PTFE electrode of the friction nano power generation device are distributed on the upper surface and the lower surface of a spiral bent plate with gradually changed diameters, the upper part of the spiral bent plate is connected with a magnet balancing weight, and the lower part of the spiral bent plate is connected with a device base; the limiting rod is fixed on the device base, the coil is fixed on the outer shell cover plate, the outer shell cover plate is fixed on the device shell, the device shell is fixed on the device base, and the outputs of the friction nanometer power generation device and the electromagnetic power generation device are connected with the internal circuit through the conducting wires. The utility model discloses combine dynamic vibration absorber and friction nanometer electricity generation principle and electromagnetism electricity generation principle, solve that traditional vibration energy collection device generating efficiency is low, the frequency of operation scope is little and can not adjust, the low scheduling problem of space utilization, also can regard as the abnormal warning device of vibration from the energy supply simultaneously.
Description
Technical Field
The utility model belongs to the technical field of the vibration energy is collected, especially, relate to a combined type vibration energy collection device.
Background
Most of electronic equipment at present uses various chemical batteries as energy sources, and has various problems of short service life, difficult replacement, environmental pollution, troublesome subsequent treatment and the like. The torsional vibration energy collecting device collects the vibration which is widely existed in various mechanical equipment, road, bridge, tracks, automobiles, ships and other occasions as energy, solves the problem of long-term uninterrupted energy supply of radio equipment such as a distributed sensor and the like while solving the harm caused by the vibration. The vibration energy collecting device mainly comprises friction nanometer power generation, magnetoelectric conversion, piezoelectric conversion, magnetostriction conversion, electrostatic conversion and the like. However, the vibration energy collecting device in a single form often has various problems of low power generation efficiency, low space utilization rate and the like. Thus, combining several forms of vibration energy harvesting principles to improve space utilization and power generation efficiency is a recent research hotspot. The friction nano power generation has the advantages of simple structure, low cost, light weight, high power density, high efficiency and the like, and is convenient to be combined with other vibration energy collection to form various composite forms.
The vibration in the environment has the characteristics of low frequency, low amplitude, instability and the like, in order to adapt to the conditions of amplitude and complex frequency in the environment, the vibration amplitude is improved by utilizing the vibration energy generated by the dynamic vibration absorber in the environment under the excitation of the vibration of the external environment to absorb the vibration energy in the environment, and the dynamic vibration absorber is simple, stable and reliable in structure and mainly comprises a mass block, a spring system and a damper. However, the traditional vibration absorber has a single vibration absorption frequency and cannot adapt to variable vibration in the environment, and the power generation efficiency and the space utilization rate of part of the vibration energy collecting device are limited. Chinese utility model patent [ CN 2126808106U ] a compound vibration energy collection device utilizes the piezoelectricity cantilever beam that four directions of level were placed and the compound generating efficiency who improves the device with this of friction nanometer electricity generation principle, but its space utilization is not high, beats about the friction nanometer electricity generation device and easily produces secondary vibration and noise.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned defect that exists among the prior art and not enough, the utility model aims to solve the technical problem that a combined type vibration energy collection device is provided, combines dynamic vibration absorber and friction nanometer electricity generation principle and electromagnetism electricity generation principle, solves traditional vibration energy collection device generating efficiency low, the operating frequency scope is little and can not adjust, space utilization hangs down the scheduling problem, also can regard as the unusual alarm device of vibration from the energy supply simultaneously.
In order to realize the purpose, the technical scheme of the utility model is that:
a combined vibration energy collecting device specifically comprises a vibration absorption structure, a friction nanometer power generation device, an electromagnetic power generation device, a fixing device and an internal circuit; the vibration absorption structure comprises a spiral curved plate 4 with gradually changed diameter and a magnet balancing weight 3 fixed on the upper part of the spiral curved plate 4, the spiral curved plate 4 is fixed on a device base 14 through screws, the magnet balancing weight 3 is connected with the spiral curved plate 4 through the matching of screws 11 and nuts, and a limiting rod 10 is arranged in the middle of the magnet balancing weight 3 and the spiral curved plate 4 to prevent the device from being damaged in the vibration process; the electromagnetic power generation device comprises a magnet balancing weight 3 and a coil 2 which are arranged above a spiral bent plate, wherein the coil 2 is fixed on a shell cover plate 8 through glue, the shell cover plate 8 is fixed on a device shell 12 through a screw 9, the device shell 12 is fixed on a device base 14 through a shell fixing screw 13, and finally the device base 14 is fixed at a mounting position through a screw.
Further, the diameter of the spiral curved plate of the shock absorbing structure is linearly increased from top to bottom to form an elastic structure with a gradually decreasing elastic coefficient.
Further, spiral bent plate upper portion is equipped with four mounting holes, and magnet balancing weight (3) are fixed on spiral bent plate 4 through screw (11) and nut cooperation, can select for use the magnet balancing weight of different weight according to outside vibration frequency range.
Furthermore, the first electrode of the friction nano-generator is a PTFE electrode located on the upper surface of the spiral curved plate, the second electrode is an aluminum electrode located on the lower surface of the spiral curved plate, and the two electrodes are separated by an insulating material such as rubber or resin.
Alternatively, the first electrode of the friction nano-generator may be replaced by acrylic acid, polyimide, fluorinated ethylene propylene, polydimethylsiloxane, etc., and the second electrode of the friction nano-generator may be replaced by a copper electrode.
The magnetic pole direction of the magnet counterweight block of the electromagnetic generating device is along the direction of the limiting rod 10; the magnet counterweight material of the electromagnetic power generation device is neodymium iron boron, and permanent magnet materials such as samarium cobalt and aluminum nickel cobalt are used as alternatives.
Further, the coil 2 of the electromagnetic generating device is a copper coil.
The internal circuit is integrated on the device base 14, the aluminum electrode of the friction nano power generation device and the metal sheet coupled in the PTFE electrode are connected with the internal circuit through a lead, and two poles of the electromagnetic conversion device are connected with the internal circuit through leads.
Furthermore, the internal circuit comprises a rectification filtering voltage stabilizing circuit and a vibration abnormity warning circuit. The rectification, filtering and voltage stabilizing circuit comprises a transformer, a rectifier bridge, a filter capacitor, an energy storage capacitor and a voltage stabilizing chip AMS1117, wherein the outputs of the friction nanometer power generation device and the electromagnetic conversion device are connected to an internal circuit and then supply power to a vibration abnormity warning circuit or an external circuit after transformation, rectification, filtering and voltage stabilization; the vibration abnormity warning circuit comprises a low-power consumption MCU and a low-power consumption wireless communication module, electric signals output by the friction nanometer power generation device and the electromagnetic power generation device are subjected to voltage transformation and then serve as the input of the MCU to further detect the working state of the vibration energy collecting device, and the abnormal working state is pre-warned.
The utility model has the advantages that:
1. the vibration absorber, the friction nano power generation device and the electromagnetic power generation device are combined to improve power generation power and efficiency compared with a traditional vibration energy collecting device, derivative vibration and noise are reduced compared with a flapping type friction nano power generation device, and energy waste is avoided compared with a traditional vibration absorber.
2. The spiral curved surface with the gradually changed diameter forms a spring with the gradually changed elastic coefficient, so that the nonlinear vibration absorber is formed, and the working frequency range of the vibration energy collecting device is widened.
3. The vibration absorber has adjustable natural frequency, and the working frequency range of the vibration energy collecting device is further enlarged.
4. The device has multiple purposes and can be used as a self-powered vibration abnormity warning device at the same time.
5. Simple structure, the reliability is high, simple to operate, space utilization is high.
Drawings
Figure 1 is a front view of a combined vibration energy harvesting device.
Figure 2 is a top view of a combined vibration energy harvesting apparatus.
Fig. 3 is a schematic structural view of a combined vibration energy collecting device.
Figure 4 is a schematic view of a cross-sectional material of a helical curved surface of a combined vibration energy harvesting device.
Figure 5 is an internal circuit diagram of one embodiment of a combined vibration energy harvesting device.
Description of reference numerals: 1-a limiting rod fixing screw, 2-a coil, 3-a magnet balancing weight, 4-a spiral bent plate, 5-a friction nanometer power generation device two poles, 6-a device fixing screw, 7-a spiral bent plate fixing screw, 8-a housing cover plate, 9-a housing cover plate fixing screw, 10-a limiting rod, 11-a balancing weight fixing screw 12-a device housing, 13-a housing fixing screw, and 14-a device base.
Detailed Description
In order to make the objects and advantages of the present invention more clearly understood, the technical solutions in the embodiments of the present invention are described below clearly and completely with reference to the accompanying drawings, and the scope of the present invention is not limited thereby.
The first embodiment is as follows:
as shown in fig. 1 to fig. 3, the present embodiment provides a combined vibration energy collecting device, which specifically includes a vibration absorbing structure, a friction nano-generator, an electromagnetic generator, a fixing device, and an internal circuit; the vibration absorption structure comprises a spiral curved plate 4 with gradually changed diameter and a magnet balancing weight 3 fixed on the upper part of the spiral curved plate 4, the spiral curved plate 4 is fixed on a device base 14 through screws, the magnet balancing weight 3 is connected with the spiral curved plate 4 through the matching of screws 11 and nuts, and a limiting rod 10 is arranged in the middle of the magnet balancing weight 3 and the spiral curved plate 4 to prevent the device from being damaged in the vibration process; the electromagnetic power generation device comprises a magnet balancing weight 3 and a coil 2 which are arranged above a spiral bent plate, wherein the coil 2 is fixed on a shell cover plate 8 through glue, the shell cover plate 8 is fixed on a device shell 12 through a screw 9, the device shell 12 is fixed on a device base 14 through a shell fixing screw 13, and finally the device base 14 is fixed at an installation position through a screw.
Further, the diameter of the spiral curved plate of the shock absorbing structure is linearly increased from top to bottom to form an elastic structure with a gradually decreasing elastic coefficient.
Further, spiral bent plate upper portion is equipped with four mounting holes, and magnet balancing weight (3) are fixed on spiral bent plate 4 through screw (11) and nut cooperation, can select for use the magnet balancing weight of different weight according to outside vibration frequency range.
Further, 3 covers of magnet balancing weight are on gag lever post 10, prevent that magnet balancing weight 3 from taking place the skew percussion device shell and leading to secondary vibration or even damage spiral bent plate 4 in the vibration process.
Preferably, the cross section of the material of the spiral curve plate is as shown in fig. 4, the first electrode of the friction nano-generator is a PTFE electrode located on the upper surface of the spiral curve plate, the second electrode is an aluminum electrode located on the lower surface of the spiral curve plate, and the two electrodes are separated by an insulating material such as rubber or resin. The spiral structure improves the space utilization rate of the friction nanometer power generation device.
Alternatively, the first electrode of the friction nano-generator may be replaced by acrylic acid, polyimide, fluorinated ethylene propylene, polydimethylsiloxane, etc., and the second electrode of the friction nano-generator may be replaced by a copper electrode.
Under the excitation of external vibration, the magnet balancing weight 3 and the spiral curved plate 4 vibrate up and down periodically, and the dynamic vibration absorber formed by the magnet balancing weight 3 and the spiral curved plate 4 is in a resonance state within a certain frequency range, so that the vibration amplitude is greatly enhanced. The aluminum electrode on the lower surface of the upper layer of the bent plate and the PTFE electrode on the upper surface of the lower layer of the bent plate are in periodic contact separation in the vibration process, electrons are volatilized from the aluminum electrode during contact, and the PTFE electrode is easy to obtain electrons; during separation, the aluminum electrode is positively charged, the PTFE electrode is negatively charged, and charges are transferred between the two electrodes through an external lead under the action of potential difference; when the electrodes are contacted again, the potential difference generated by the friction charge of the two electrodes disappears, and the electrons reversely flow. The aluminum electrode and the PTFE electrode are periodically contacted and separated to realize contact friction electrification, and an internal vibration abnormity alarm circuit or an external circuit is powered after the aluminum electrode and the PTFE electrode are subjected to rectification and voltage stabilizing circuit.
Further, the diameter of the spiral curved plate 4 in fig. 1 is sequentially and linearly increased from top to bottom to form an elastic structure with the elasticity coefficient gradually reduced, and the spiral curved plate 4 with the gradually changed elasticity coefficient and the magnet balancing weight 3 form the nonlinear dynamic vibration absorber, so that the working frequency range of the vibration energy collecting device is widened. The spiral curved plate 4 with the gradually changed elastic coefficient can ensure that part of the springs of the vibration energy collecting device are not compacted within a larger vibration frequency range, and the secondary vibration and noise caused by frequent compaction of the linear springs are reduced while the working frequency range of the combined vibration energy collecting device is expanded. There is some helical surface in the state that periodic contact separated in a frequency range that is bigger than all, has improved the utility model relates to a reliability of radio equipment power.
The magnet balancing weight 3 of the electromagnetic generating device periodically vibrates up and down under the excitation of external vibration, and simultaneously causes the magnetic flux in the coil 2 above the magnet balancing weight 3 to periodically change, so that the current in the coil above the magnet balancing weight is caused to periodically change, and the energy can be supplied to an external energy storage device or an external circuit after the current is rectified and stabilized. The conversion efficiency and the power generation power of the vibration energy collecting device are further improved by combining the friction nanometer power generation principle and the electromagnetic power generation principle.
Further, when the amplitude of the magnetic balance weight 3 is too large under the excitation of the external vibration, the current generated in the coil above the lenz law is also increased, so that the amplitude of the magnetic balance weight 3 is suppressed to a certain extent, and the amplitude of the magnetic balance weight is ensured to be within a controllable range.
The embodiment provides a combined vibration energy collecting device, which combines a nonlinear dynamic vibration absorber, a friction nano power generation device and an electromagnetic power generation device, and collects vibration in the environment and converts the vibration into electric energy so as to supply power to electronic equipment such as a distributed sensor. The vibration energy collector in the embodiment has the advantages of simple structure, high reliability, convenience in installation and high space utilization rate. The friction nanometer power generation device and the electromagnetic power generation device in the embodiment are combined, so that the vibration energy collection efficiency and the power generation power of the device can be effectively improved. The nonlinear spring design of the spiral curved surface in the embodiment widens the working frequency bandwidth of the vibration energy collecting device, and compared with the traditional friction nanometer power generation device, the combination of the friction nanometer power generation device and the nonlinear dynamic vibration absorber improves the power generation power and efficiency. The natural frequency of the dynamic vibration absorber in the embodiment can be adjusted, and the working frequency range of the vibration energy collecting device is further enlarged.
Example two:
on the basis of embodiment one, the utility model relates to a combined type vibration energy collection device can also regard as the bump leveller of equipment and self-powered vibration abnormity alarm device. Through in the example one the installation procedure will the utility model discloses install on the equipment that needs to be damped.
The magnet balancing weight 3 and the spiral curved plate 4 form a dynamic vibration absorber, the rigidity and the diameter change rule of the spiral curved plate 4 and the mass of the magnet balancing weight 3 are adjusted, so that the natural frequency of the dynamic vibration absorber is adjusted to be matched with the vibration frequency of the equipment to be damped, and the dynamic vibration absorber is in a resonance state, so that the vibration of the equipment to be damped is transferred to the dynamic vibration absorber. The magnet balancing weight 3 and the spiral bent plate 4 vibrate up and down to cause the aluminum electrode on the lower surface of the upper spiral bent plate 4 and the PTFE electrode on the upper surface of the lower spiral bent plate 4 to be in periodic contact separation in the vibration process, and the friction nano power generation device converts the mechanical energy of vibration into electric energy based on the friction electrification and electrostatic induction effects; meanwhile, the magnet counterweight 3 vibrates up and down along the magnetic pole direction, so that the magnetic flux in the coil 2 changes to generate induced current in the coil.
The outputs of the friction nanometer power generation device and the electromagnetic power generation device are influenced by the vibration frequency of the damped equipment, and the vibration frequency of the damped equipment can be detected by detecting the outputs of the friction nanometer power generation device and the electromagnetic power generation device. The electric signals of which the current, the voltage and the frequency are respectively output by two poles of the friction nanometer power generation device and two poles of the electromagnetic power generation device within a specific range are connected to the vibration abnormity warning circuit, and meanwhile, the electric signals are used as a power supply of the vibration abnormity warning circuit after being subjected to voltage stabilization, rectification and filtering of the circuit shown in figure 5, so that self-energy supply of equipment is realized.
As shown in fig. 5, the vibration abnormality warning circuit includes a low-power consumption MCU with an AD acquisition function and a low-power consumption wireless communication module, and transforms the electric signals output by the friction nano power generation device and the electromagnetic power generation device into the electric signals, and then detects the operating state of the vibration energy collection device as the input of the MCU. When the equipment is in some abnormal states, the vibration frequency of the equipment which is possibly difficult to perceive on the surface but in the abnormal state is changed, so that the current, the voltage and the frequency of the electric signal output by the composite vibration energy collecting device are changed, and when the peak value of each parameter exceeds or is lower than the threshold value set by the monitoring circuit and each parameter has larger fluctuation, an alarm is sent to prompt a technician to detect the equipment.
Further, the low-power consumption wireless communication module is a ZigBee wireless communication module cc2530, the low-power consumption wireless communication module is set to be in a dormant state when no abnormality is detected, and the MCU wakes up the wireless communication module to send abnormal information and equipment logs to the cloud when the MCU detects the abnormality, so that the power consumption of the vibration abnormality alarm circuit can be reduced.
Furthermore, the diameter of the spiral curved plate 4 in fig. 1 sequentially increases linearly from top to bottom to form an elastic structure with gradually decreasing elastic coefficient, and the spiral curved plate 4 with gradually decreasing elastic coefficient and the magnet counterweight block 3 form a nonlinear dynamic vibration absorber, thereby widening the working frequency range of the vibration absorber. Meanwhile, within a larger frequency range, the friction nanometer power generation device and the electromagnetic power generation device can both output effective electric signals, and the frequency range of vibration frequency detection is also enlarged.
The embodiment provides a combined vibration energy collecting device, which combines a nonlinear dynamic vibration absorber, a friction nano power generation device and an electromagnetic power generation device, utilizes resonance to absorb the vibration of a vibration reduction device, converts the vibration into electric energy, supplies energy to an internal vibration abnormity alarm circuit after voltage stabilization through voltage transformation inversion filtering, and detects the working state of the vibration reduction device by taking the output voltage transformation of the friction nano power generation device and the output voltage transformation of the electromagnetic power generation device as the input of the vibration abnormity alarm circuit while absorbing the vibration of the device. The vibration absorber in the embodiment has the advantages of simple structure, high reliability and convenience in installation. The design of the spiral-shaped curved nonlinear spring in the embodiment widens the working frequency bandwidth of the vibration absorber and the working frequency range of the detection device. The natural frequency of the dynamic vibration absorber in the embodiment can be adjusted, and the working frequency range of the vibration energy collecting device is further enlarged. The electromagnetic generating device in the embodiment serves as a damper of the vibration absorber part, and the vibration amplitude of the vibration absorber in a resonance state is ensured to be within a proper range.
The above detailed description of the embodiments of the present invention has been provided with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and those skilled in the art can make several equivalent transformations and substitutions without departing from the principles of the present invention after learning the contents of the present invention.
Claims (6)
1. A combined type vibration energy harvesting device is characterized in that: comprises a vibration absorption structure, a friction nanometer power generation device, an electromagnetic power generation device, a fixing device and an internal circuit;
the vibration absorption structure comprises a spiral curved plate (4) with gradually changed diameter and a magnet balancing weight (3) fixed on the upper portion of the spiral curved plate, the spiral curved plate (4) is fixed on a device base (14) through screws, the magnet balancing weight (3) is connected with the spiral curved plate (4) through matching of screws (11) and nuts, and a limiting rod (10) is arranged in the middle of the magnet balancing weight (3) and the spiral curved plate (4) to prevent the device from being damaged in the vibration process;
the electromagnetic power generation device comprises a magnet balancing weight (3) and a coil (2), wherein the coil (2) is fixed on a shell cover plate (8) through glue, the shell cover plate (8) is fixed on a device shell (12) through a screw (9), the device shell (12) is fixed on a device base (14) through a shell fixing screw (13), and finally the device base (14) is fixed at an installation position through a screw.
2. The composite vibration energy harvester of claim 1 wherein: the first electrode of the friction nanometer power generation device is a PTFE electrode positioned on the upper surface of the spiral curved plate, the second electrode is an aluminum electrode positioned on the lower surface of the spiral curved plate, and the middle of the second electrode is separated by insulating materials such as rubber or resin.
3. The composite vibration energy harvester of claim 1 wherein: the diameter of the spiral bent plate of the vibration absorbing structure is linearly increased from top to bottom in sequence to form an elastic structure with the elastic coefficient gradually reduced.
4. The composite vibration energy harvester of claim 1 wherein: the magnetic pole direction of the magnet balancing weight of the electromagnetic generating device is along the direction of the limiting rod (10); the magnet counterweight block of the electromagnetic generating device is made of neodymium iron boron.
5. The composite vibration energy harvester of claim 1 wherein: the internal circuit is integrated on a device base (14), an aluminum electrode of the friction nano power generation device and a metal sheet coupled in a PTFE electrode are connected with the internal circuit through a lead, and two poles of the electromagnetic conversion device are connected with the internal circuit through leads.
6. The composite vibration energy harvester of claim 1 wherein: the internal circuit comprises a rectification filtering voltage stabilizing circuit and a vibration abnormity warning circuit.
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| CN202221096216.9U CN217508625U (en) | 2022-05-09 | 2022-05-09 | Combined type vibration energy collection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118531666A (en) * | 2024-07-19 | 2024-08-23 | 中国铁路设计集团有限公司 | Dynamic vibration absorber for friction power generation and energy harvesting and floating slab track |
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2022
- 2022-05-09 CN CN202221096216.9U patent/CN217508625U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118531666A (en) * | 2024-07-19 | 2024-08-23 | 中国铁路设计集团有限公司 | Dynamic vibration absorber for friction power generation and energy harvesting and floating slab track |
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