CN116155058A - Energy collector for high-amplitude vibration - Google Patents
Energy collector for high-amplitude vibration Download PDFInfo
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- CN116155058A CN116155058A CN202310159284.8A CN202310159284A CN116155058A CN 116155058 A CN116155058 A CN 116155058A CN 202310159284 A CN202310159284 A CN 202310159284A CN 116155058 A CN116155058 A CN 116155058A
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- 230000026683 transduction Effects 0.000 claims abstract description 20
- 238000010361 transduction Methods 0.000 claims abstract description 20
- 238000004146 energy storage Methods 0.000 claims abstract description 14
- 230000006698 induction Effects 0.000 claims abstract description 14
- 238000006243 chemical reaction Methods 0.000 claims abstract description 9
- 230000001105 regulatory effect Effects 0.000 claims abstract description 3
- 239000007789 gas Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 5
- 238000005538 encapsulation Methods 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 239000011261 inert gas Substances 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 2
- 238000004891 communication Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims 1
- 230000001133 acceleration Effects 0.000 abstract description 4
- 230000006835 compression Effects 0.000 abstract description 4
- 238000007906 compression Methods 0.000 abstract description 4
- 238000006073 displacement reaction Methods 0.000 abstract description 4
- 238000004806 packaging method and process Methods 0.000 abstract description 4
- 238000013016 damping Methods 0.000 description 11
- 238000005516 engineering process Methods 0.000 description 7
- 230000033001 locomotion Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005291 magnetic effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
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- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K35/00—Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit
- H02K35/02—Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit with moving magnets and stationary coil systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/02—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3207—Constructional features
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N1/00—Electrostatic generators or motors using a solid moving electrostatic charge carrier
- H02N1/04—Friction generators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/18—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
- H02N2/186—Vibration harvesters
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The energy collector for high-amplitude vibration is characterized in that air pressure type dampers are symmetrically arranged in the packaging shell up and down, the air pressure type dampers are connected with one end of a vibration pickup component, the other end of the vibration pickup component is connected with a transduction unit, an induction coil is arranged outside the transduction unit to interact with each other to generate alternating current/direct current voltage signals, and the energy storage unit is connected with an external load to realize self power supply after rectifying and voltage regulating by an electric energy management unit; according to the invention, the energy conversion unit is utilized to convert external vibration energy into alternating current/direct current, then the energy management unit rectifies and converts the external vibration energy and transmits the electric energy to the energy storage unit, and finally the energy storage unit is connected with an external load through the interface circuit, so that self-power supply of key components is realized; the air compression type dampers are added at the two ends of the energy collector and are used for absorbing impact force generated during vibration reversing, so that the device can be applied to a strong vibration environment with large acceleration and large displacement, the reliability of the energy collector is greatly improved, and the application scene of the energy collector is expanded.
Description
Technical Field
The invention relates to the technical field of self-energy taking, in particular to an energy collector for high-amplitude vibration, which is suitable for a high-amplitude and high-acceleration vibration environment.
Background
With the acceleration of digital transformation and intelligent upgrading steps of the economy and society, the Internet of things has become an important component of a novel infrastructure. The energy supply problem in the modern internet of things system with intelligent green, safe and reliable performance becomes one of the difficulties restricting the wide deployment of the system. The technology for collecting energy for the environmental vibration micro source becomes an important means for solving the problems of difficult power supply access and high battery replacement and maintenance cost in the Internet of things system. On the other hand, vibration sources widely distributed in industrial environments are widely characterized by large amplitude and large impact, and energy collection under such conditions requires further consideration of reliability and safety of the device.
In the technical field of energy collection, a plurality of self-powered schemes are proposed by some patent applications facing to environmental vibration sources. Patent application CN202111322829.X is directed to vibration of a transformer of a power system, and provides a self-energy-taking method based on a micro-electromechanical technology, but the whole scheme is focused on system-level functional description, and the demonstration of a specific energy-converting mode is lacking. Patent application CN202111392724.1 proposes a vibration energy collector based on MEMS technology, which is mainly applied to a low-frequency wide-frequency-domain vibration environment, and has certain limitations in a high-amplitude and high-acceleration environment. The energy collectors described in patent applications CN202111653129.9, CN202210921300.8 and CN202220178239.8 are all based on cantilever beam and mass block structures for piezoelectric transduction output, but such methods generally have the problems of high output impedance and low overall power, and the reliability under the strong vibration environment needs to be explored. Patent application CN202210474894.2 proposes an electromagnetic vibration and energy harvester which relies on the relative movement between a ferromagnetic core and a magnet to induce a voltage in a coil, and this transduction affects the change in magnetic flux in the coil by means of the core, resulting in a lower transduction efficiency. In summary, most of the existing vibration energy collection technologies are directed to the application of small-amplitude vibration sources, which are prone to failure under the impact of large acceleration, and are difficult to cope with the application requirements of high-amplitude large acceleration.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide the energy collector for high-amplitude vibration, which converts vibration energy widely distributed in natural/social environments into electric energy by utilizing a self-energy-taking technology and supplies power to terminals such as communication equipment, sensors and the like, wherein the self-energy-taking technology takes electromagnetic induction as a basic principle, and can be combined with friction type, piezoelectric type and electret type energy collection technologies to form a composite structure; on the other hand, the damping structure is added on the vibration pickup component to overcome the impact problem in the strong vibration environment, so that the vibration energy collection is realized, the damping structure is added, the working reliability in the strong vibration environment is ensured, and the application scene is expanded.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the utility model provides an energy harvester towards high amplitude vibration, including encapsulation shell 5, the symmetry is provided with pneumatic type attenuator 1 about in the encapsulation shell 5, pneumatic type attenuator 1 is connected with vibration pickup part 2 one end, vibration pickup part 2 other end is connected and is converted the unit 3, conversion unit 3 outside is provided with induction coil 6, conversion unit 3 and induction coil 6 interact and produce alternating current/direct current voltage signal, with electric energy transmission to energy storage unit 8 after electric energy management unit 4 rectification pressure regulating, energy storage unit 8 passes through power interface 7 and is connected with external load and realizes the self-power.
The vibration pickup parts 2 are symmetrically arranged and adopt elastic structures, and comprise spiral springs, disc springs, wave springs or rubber springs.
The transduction unit 3 takes a single permanent magnet or a permanent magnet array as a main body.
The induction coil 6 is an FPC flexible coil, a wound copper coil or an MEMS process coil.
The pneumatic damper 1 comprises a piston guide rod 101, one end of the piston guide rod 101 is connected with a vibration pickup component 2, the other end of the piston guide rod 101 is integrally connected with a piston head 103, the piston head 103 is sealed in a damper shell 102, a sealed gas cavity 104 is formed between the piston head 103 and the damper sealed shell 102, and high-pressure inert gas is filled in the sealed gas cavity 104.
The piston head 103 is provided with a nanopore.
Compared with the prior art, the invention has the following beneficial effects:
1. the induction coil 6 is arranged outside the transduction unit 3, so that the transduction mode is mainly magneto-electric, the output impedance is small, the output power is high, and the transduction unit has certain electromagnetic damping characteristics; meanwhile, the device can be compounded with power generation modes such as friction and piezoelectricity, and the electric energy output capacity can be remarkably improved after the device is designed from structural design and space layout.
2. The air-entrapping type dampers 1 are attached to two ends of the energy collector and are used for counteracting impact force existing under high-amplitude vibration, the energy collector can be suitable for various vibration environments by adjusting damping coefficients of the air-entrapping type dampers, and particularly, the reliability of the device in the large-acceleration and large-displacement vibration environments can be improved, and the air-entrapping type dampers can be unfolded and applied in the fields of rail transit, roads and bridges, intelligent buildings, wearable equipment and the like.
Drawings
Fig. 1 is a schematic diagram of the overall structure of an energy harvester for high-amplitude vibration according to the present invention.
Fig. 2 is a schematic structural view of a pneumatic damper according to the present invention.
FIG. 3 is a diagram of the electrical interconnections of the energy harvester system of the present invention.
FIG. 4 is a block diagram of the internal components of the power management unit of the power harvester of the invention.
Detailed Description
The following describes specific embodiments of the present invention in detail with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the invention, are not intended to limit the invention.
Referring to fig. 1, an energy collector for high-amplitude vibration comprises a packaging shell 5, wherein air pressure type dampers 1 are symmetrically arranged in the packaging shell 5 from top to bottom, the air pressure type dampers 1 are connected with one end of a vibration pickup component 2, the other end of the vibration pickup component 2 is connected with a transduction unit 3, an induction coil 6 is arranged outside the transduction unit 3, the transduction unit 3 and the induction coil 6 interact to generate alternating current/direct current voltage signals, electric energy is transmitted to an energy storage unit 8 after rectification and voltage regulation of an electric energy management unit 4, and the energy storage unit 8 is connected with an external load through a power interface 7 to realize self power supply.
The vibration pickup components 2 are symmetrically arranged, and mainly convert external vibration into vibration of the internal transduction unit, and an elastic structure is adopted, wherein the vibration pickup components comprise a spiral spring, a disc spring, a wave spring and a rubber spring, and the number of the vibration pickup components is single or multiple according to requirements.
The transduction unit 3 takes a single permanent magnet or a permanent magnet array as a main body, and can also be combined with piezoelectric transduction and friction transduction to form a composite transduction unit.
The induction coil 6 can be flexible FPC coil, wound copper coil or MEMS process coil according to the requirement.
The packaging shell 5 selects magnetic shielding materials to resist external interference according to application scenes, and is integrally packaged to isolate the influence of environmental dust and water vapor.
Referring to fig. 2, the pneumatic damper 1 includes a piston guide rod 101, one end of the piston guide rod 101 is connected to the vibration pickup member 2, the other end of the piston guide rod 101 is integrally connected to the piston head 103, and during vibration, the piston rod drives the piston head to reciprocate. The piston head 103 is inside the damper seal housing 102 such that a sealed gas chamber 104 is formed between the piston head 103 and the damper seal housing 102, the sealed gas chamber 104 being filled with a high pressure inert gas.
The piston head 103 is made of metal or polymer materials, the piston head 103 is a circular sheet when seen from the top, the circular sheet is similar to a monobasic coin, a plurality of nano holes are formed in the circular sheet to form a porous structure, the pressure reaches a certain degree, and gas can pass through the air holes, so that the shape, the number and the size of the porous structure are flexibly arranged, and the integral damping coefficient of the damper can be adjusted.
During compression of the gas (the straight arrows indicate the compression direction), the gas can flow from the lower portion of the piston head to the upper portion of the piston head through the porous structure (the curved arrows indicate the compression direction). The direction of the gas flow after the reversing movement of the piston rod is opposite to the direction of the marked arrow in the figure, so that the damping movement of the piston rod is realized in the process of the gas reciprocating extrusion flow, and the damping effect is achieved.
The working principle of the invention is as follows:
according to the invention, the transduction unit 3, the vibration pickup part 2 and the induction coil 6 interact with each other to convert external vibration energy into electric energy for output, and the pneumatic damper 1 is used for relieving possible impact collision of the transduction unit 3 in the reciprocating motion process, so that the reliability under high-amplitude vibration is greatly improved. The ac or dc voltage signal output by the induction coil 6 is modulated by the electric energy management unit 4, stored by the energy storage unit 8, and matched with the power interface 7, and then connected with the back-end load, and the electrical interconnection relationship of the whole system is shown in fig. 3.
In the energy collector for high-amplitude vibration provided by the invention, the energy conversion unit 3 firstly converts external mechanical energy into electric energy, the electric energy is induced by the induction coil 6 and transmitted to the electric energy management unit 4, wherein the electric energy management unit is mainly responsible for converting alternating current/direct current voltage, carrying out charge/discharge management on the energy storage unit, protecting and cutting off abnormal states of the system, and the electric energy management mechanism is shown in fig. 4, the electric energy management unit 4 comprises a rectifying circuit 401, a DC/DC voltage conversion 402, a charge/discharge management circuit 403 and a protection circuit 404, the rectifying circuit 401 converts the induced alternating current into direct current with a certain amplitude, then the voltage conversion circuit 402 adjusts the rectified direct current voltage into chargeable voltage of the energy storage unit, the charge/discharge management circuit 403 is connected between the energy storage unit and a load and is used for controlling the work and the cut-off of the load, meanwhile, the overcharge and overdischarge of the energy storage unit are avoided, and the protection circuit 404 is combined to ensure the safe operation of the system.
The pneumatic damper 1 is applied to two ends of an energy collector, the damping coefficient is adjustable, and the vibration energy collecting device designed based on the damping coefficient can be widely applied to various vibration environments, and particularly can overcome the impact problem caused by the large-acceleration and large-displacement vibration environments, and improve the overall reliability and service life of devices.
The device provided by the invention can face to a large-displacement and large-acceleration vibration environment, and the air pressure type damping structure has necessary effects for counteracting impact energy. In the equivalent spring mass system, the damper is added to enable the system to be in an over-damping state, so that external mechanical energy under the forced vibration condition is converted into internal energy or electric energy in the damper, and the conversion and dissipation of impact energy are realized.
Claims (5)
1. The utility model provides an energy harvester towards high amplitude vibration, including encapsulation shell (5), a serial communication port, symmetry is provided with pneumatic type attenuator (1) about in encapsulation shell (5), pneumatic type attenuator (1) are connected with vibration pickup unit (2) one end, vibration pickup unit (2) other end is connected and is converted energy unit (3), conversion unit (3) outside is provided with induction coil (6), conversion unit (3) and induction coil (6) interact and produce alternating current/direct current voltage signal, with electric energy transmission to energy storage unit (8) after electric energy management unit (4) rectification pressure regulating, energy storage unit (8) are connected with external load through power interface (7) and realize self-power supply.
2. The energy collector for high-amplitude vibration according to claim 1, wherein the vibration pickup parts (2) are symmetrically arranged and adopt elastic structures, including coil springs, disc springs, wave springs or rubber springs.
3. The high-amplitude vibration-oriented energy harvester according to claim 1, wherein the transduction unit (3) is mainly composed of a single permanent magnet or an array of permanent magnets.
4. An energy harvester for high amplitude vibrations according to claim 1, characterized in that the induction coil (6) is an FPC flexible coil, a wound copper coil or a MEMS process coil.
5. The energy collector for high-amplitude vibration according to claim 1, wherein the pneumatic damper (1) comprises a piston guide rod (101), one end of the piston guide rod (101) is connected with the vibration pickup component (2), the other end of the piston guide rod (101) is integrally connected with the piston head (103), the piston head (103) is sealed in the damper housing (102), a sealed gas cavity (104) is formed between the piston head (103) and the damper sealing housing (102), and the sealed gas cavity (104) is filled with high-pressure inert gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310159284.8A CN116155058A (en) | 2023-02-24 | 2023-02-24 | Energy collector for high-amplitude vibration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310159284.8A CN116155058A (en) | 2023-02-24 | 2023-02-24 | Energy collector for high-amplitude vibration |
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| Publication Number | Publication Date |
|---|---|
| CN116155058A true CN116155058A (en) | 2023-05-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310159284.8A Pending CN116155058A (en) | 2023-02-24 | 2023-02-24 | Energy collector for high-amplitude vibration |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117081019A (en) * | 2023-10-10 | 2023-11-17 | 西安合容开关有限公司 | Quick current limiting device |
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2023
- 2023-02-24 CN CN202310159284.8A patent/CN116155058A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117081019A (en) * | 2023-10-10 | 2023-11-17 | 西安合容开关有限公司 | Quick current limiting device |
| CN117081019B (en) * | 2023-10-10 | 2024-03-12 | 西安合容开关有限公司 | Quick current limiting device |
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