CN110401376B - Single pendulum type human motion energy collector and collection method thereof - Google Patents
Single pendulum type human motion energy collector and collection method thereof Download PDFInfo
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- CN110401376B CN110401376B CN201910703535.8A CN201910703535A CN110401376B CN 110401376 B CN110401376 B CN 110401376B CN 201910703535 A CN201910703535 A CN 201910703535A CN 110401376 B CN110401376 B CN 110401376B
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- 230000033001 locomotion Effects 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 10
- 230000005674 electromagnetic induction Effects 0.000 claims abstract description 37
- 239000000758 substrate Substances 0.000 claims description 15
- 230000006698 induction Effects 0.000 claims description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000004146 energy storage Methods 0.000 claims description 3
- 229910001172 neodymium magnet Inorganic materials 0.000 claims description 3
- 229920001721 polyimide Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 6
- 230000003993 interaction Effects 0.000 abstract 1
- 239000003990 capacitor Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
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- 230000035945 sensitivity Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 238000012795 verification Methods 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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- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The invention discloses a single-pendulum human motion energy collector which comprises a hollow shell, wherein two circular holes are oppositely formed in two sides of the shell close to the bottom end, electromagnetic induction coils are installed in the circular holes, a cylindrical pin is arranged in the shell and perpendicular to the side face of the shell where the circular holes are formed, a swing rod is sleeved on the cylindrical pin, a connecting pin is vertically arranged at the other end of the swing rod, magnets are installed at two ends of the connecting pin, a gap is formed between each magnet and the corresponding circular hole, at least two piezoelectric films are arranged on the inner wall of the shell close to the magnets, and the surfaces of the piezoelectric films are in contact with the. The invention also discloses an acquisition method of the energy collector, which converts the mechanical energy of the human body into electric energy through the interaction of the piezoelectric film and the electromagnetic induction coil. The device has the advantages of simple structure, low cost, long service life and high energy conversion efficiency.
Description
Technical Field
The invention belongs to the technical field of mechanical transformation, particularly relates to a single pendulum type human motion energy collector, and further relates to a collecting method of the single pendulum type human motion energy collector.
Background
Smart wearable electronics is an emerging class of smart products. At present, power supply of intelligent wearable electronic devices and wireless sensors mainly depends on lithium ion batteries, but due to the limited service life, the intelligent wearable electronic devices and the wireless sensors have potential risks of environmental pollution, so that the development of intelligent wearable products and the wireless sensors is influenced to a certain extent.
The human body has abundant energy, and the biomechanical energy collected from human body motion can be completely used for replacing a battery to supply power for the intelligent wearable electronic device and the wireless sensor. However, when human body energy is utilized, other work cannot be done, and energy conversion cannot be continued, so that an apparatus for generating energy by human body daily actions is urgently needed to be designed, mechanical energy is converted into electric energy, and continuous power supply is performed on intelligent wearable products and wireless sensors.
Disclosure of Invention
The invention aims to provide a single pendulum type human motion energy collector, which solves the problems that the service life of a power supply device of an intelligent wearable electronic device is short, the environment is polluted, and the human energy conversion is difficult to last in the prior art.
The invention also aims to provide an acquisition method of the single pendulum type human motion energy harvester.
The technical scheme includes that the single-pendulum human motion energy collector comprises a hollow shell, two circular holes are oppositely formed in two sides, close to the bottom end, of the shell, electromagnetic induction coils are installed in the circular holes, a cylindrical pin is arranged in the shell and perpendicular to the side face, where the circular holes are located, of the shell, a swing rod is sleeved on the cylindrical pin, a connecting pin is vertically arranged at the other end of the swing rod, magnets are installed at two ends of the connecting pin, a gap is formed between each magnet and the corresponding circular hole, at least two piezoelectric films are arranged on the inner wall, close to the magnets, of the shell, and the surfaces of the piezoelectric films are all in contact.
The invention is also characterized in that:
the homopolar relative setting of two magnets, magnet are cylindric, and magnet is neodymium iron boron magnet.
The two electromagnetic induction coils are copper coils, are provided with leads and are led out through round holes, and the electromagnetic induction coils are OA-1/2UEW pure copper polyurethane enameled wires.
Electrodes are pasted on the upper surface and the lower surface of the piezoelectric film, the two electrodes are any one of a copper electrode, an aluminum electrode and conductive silver paste, and the two electrodes are provided with leads and led out through round holes.
And substrates are arranged on the outer sides of the two electrodes, and are polyimide films.
The piezoelectric film, the electrode and the substrate are all rectangular, the length and the width of the electrode are smaller than those of the piezoelectric film, the length of the piezoelectric film is smaller than that of the substrate, and the width of the piezoelectric film is the same as that of the substrate; the piezoelectric film is arranged in an arc shape, and two ends of the piezoelectric film are pasted on the inner side of the shell; the piezoelectric film is a MEAS piezoelectric film.
The invention adopts another technical scheme that the acquisition method of the single pendulum type human motion energy collector is implemented according to the following steps:
2, connecting wires of the two electrodes with a wiring port of a full-wave bridge diode rectifying circuit a, connecting wires of the electromagnetic induction coil with a wiring port of a full-wave bridge diode rectifying circuit b, and connecting output ports of the full-wave bridge diode rectifying circuit a and the full-wave bridge diode rectifying circuit b with input ports of electronic devices of intelligent wearable products respectively;
when the swing rod swings to the other side of the shell, the magnet is close to the electromagnetic induction coil on the other side of the shell, the electromagnetic induction coil cuts the magnetic induction line to generate reverse induction current, and the current is transmitted to the full-wave bridge diode rectifying circuit b through the lead; meanwhile, the magnet extrudes the piezoelectric film to deform, and charges are transmitted to the full-wave bridge type diode rectifying circuit a through a lead of the electrode;
and 4, finishing a cycle of electric energy storage when the oscillating bar returns to the initial position, repeating the step 3, converting mechanical energy of human body movement into electric energy to be stored in the full-wave bridge type diode rectifying circuit, and continuously supplying power to the electronic device of the intelligent wearable product.
The invention is also characterized in that:
the full-wave bridge diode rectifying circuit a and the full-wave bridge diode rectifying circuit b have the same structure.
The invention has the beneficial effects that:
according to the single pendulum type human body movement energy collector, the piezoelectric film and the electromagnetic induction coil are both arranged on the shell and are not interfered with each other, the piezoelectric film and the electromagnetic induction coil can be operated simultaneously through the single-degree-of-freedom movement of the pendulum rod, the energy collecting mode is diversified, the size of the device is greatly reduced, and no pollution is caused; according to the single-pendulum human body movement energy collector, the action of the pendulum rod is single pendulum movement, so that the coherence of the pendulum rod and the sensitivity and the effectiveness of the collector are effectively improved, and the mechanical energy of a human body can be continuously converted into electric energy; the single pendulum type human motion energy collector has the advantages of simple structure, low cost, long service life and high energy conversion efficiency.
Drawings
FIG. 1 is a cross-sectional view of a single pendulum type human body movement energy harvester of the present invention;
FIG. 2 is a schematic structural diagram of a single pendulum type human motion energy harvester of the present invention;
FIG. 3 is a schematic structural diagram of the swing link of the present invention;
FIG. 4 is a graph of the output voltage waveform of the piezoelectric film of the present invention;
FIG. 5 is a graph of the output voltage waveform of the electromagnetic induction coil of the present invention;
FIG. 6 is a full wave bridge diode rectifier circuit of the present invention.
In the figure, 1, a swing rod, 2, a shell, 3, a magnet, 4, a connecting pin, 5, an electromagnetic induction coil, 6, a round hole, 7, a cylindrical pin and 8, a piezoelectric film.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The invention discloses a single-pendulum human motion energy collector, which comprises a hollow cylindrical shell 2, wherein two circular holes 6 are oppositely arranged on two sides of the shell 2 close to the bottom end, an electromagnetic induction coil 5 is arranged in each circular hole 6, a cylindrical pin 7 is arranged in the shell 2, the cylindrical pin 7 is perpendicular to the bottom of the shell 2, a pendulum rod 1 is sleeved on the cylindrical pin 7, the pendulum rod 1 is perpendicular to the central shaft of the shell 2, a connecting pin 4 is vertically arranged at the other end of the pendulum rod 1, magnets 3 are arranged at two ends of the connecting pin 4, a gap is arranged between each magnet 3 and each circular hole 6, at least two piezoelectric films 8 are arranged on the inner wall of the shell 2 close to the magnets 3, and the surfaces of the piezoelectric films 8 are contacted with the magnets.
Wherein, homopolarity of two magnets 3 is set up oppositely, magnet 3 is cylindrical, the round side of magnet 3 is parallel to round side of the outer cover 2, magnet 3 matches with round hole 6, magnet 3 is neodymium iron boron magnet; the two electromagnetic induction coils 5 are copper coils, are provided with leads and are led out through the round hole 6, and the electromagnetic induction coils 5 are OA-1/2UEW pure copper polyurethane enameled wires; electrodes are pasted on the upper surface and the lower surface of the piezoelectric film 8, the two electrodes are any one of a copper electrode, an aluminum electrode and conductive silver paste, and both the two electrodes are provided with leads and are led out through the round holes 6; and substrates are arranged on the outer sides of the two electrodes, and are polyimide films.
Further:
the piezoelectric film 8, the electrodes and the substrate are all rectangular, the length and the width of each electrode are smaller than those of the piezoelectric film 8, the length of the piezoelectric film 8 is smaller than that of the substrate, and the width of the piezoelectric film 8 is the same as that of the substrate; the piezoelectric film 8 is arc-shaped, and two ends of the piezoelectric film are adhered to the inner side of the shell 2; the piezoelectric film 8 is a MEAS piezoelectric film.
The main components of the single pendulum type human motion energy collector have the following functions:
swing rod 1: the full deformation of the piezoelectric film 8 is ensured in the swinging process of the swing rod 1, so that the piezoelectric film has higher voltage output;
an electrode: the surface electrode is a surface electrode of the piezoelectric film 8 and is used as a medium for charge transmission when the piezoelectric film 4 generates deformation;
substrate: the substrate is the base of the piezoelectric film 8, causing the piezoelectric film 4 to have a compressive or tensile stress throughout its volume during bending or relaxation, increasing the effective strain level exerted in the piezoelectric film 8, and restoring the shape of the piezoelectric film 8 to the original state when the pendulum 1 returns to the initial state.
The invention also relates to an acquisition method of the single pendulum type human motion energy collector, which is implemented according to the following steps:
2, connecting wires of the two electrodes with a wiring port of a full-wave bridge diode rectifying circuit a, connecting wires of the electromagnetic induction coil 5 with a wiring port of a full-wave bridge diode rectifying circuit b, and connecting output ports of the full-wave bridge diode rectifying circuit a and the full-wave bridge diode rectifying circuit b with input ports of electronic devices of intelligent wearable products respectively;
because of the limitation of the structure of the shell 2, the swing rod 1 starts to swing to the other side of the shell 2, the magnet 3 is close to the electromagnetic induction coil 5 on the other side of the shell 2, the electromagnetic induction coil 5 cuts the magnetic induction line to generate reverse induction current, and the current is transmitted to the full-wave bridge diode rectifying circuit b through a lead; meanwhile, the magnet 3 extrudes the piezoelectric film 8 to deform, the potential of the piezoelectric film 8 is gradually increased, and the electric charge is transmitted to the full-wave bridge diode rectifying circuit a through a lead of the electrode; when the oscillating bar 1 swings to the inner wall of the shell 2, the positive potential reaches the maximum;
and 4, finishing a cycle of electric energy storage when the oscillating bar 1 returns to the initial position, repeating the step 3, converting mechanical energy of human body movement into electric energy to be stored in the full-wave bridge type diode rectifying circuit, and continuously supplying power to the electronic device of the intelligent wearable product.
The full-wave bridge diode rectifying circuit a and the full-wave bridge diode rectifying circuit b are identical in structure and comprise a WOB circular bridge, a CD1H105MC9BEF4E000 direct-insert monolithic capacitor and a direct-insert aluminum electrolytic capacitor which are connected through wires.
The manufacturing method of the full-wave bridge type diode rectifying circuit comprises the following steps:
selecting 2 wiring terminals, 2 WOB circular bridges, 2 monolithic capacitors, 2 electrolytic capacitors and a circuit board, arranging 1 wiring terminal, the WOB circular bridges, the monolithic capacitors and the electrolytic capacitors into a line, inserting the line into a soldering tin hole of the circuit board, connecting the wiring terminals and the WOB circular bridges in parallel in a soldering tin mode, and connecting the WOB circular bridges and the monolithic capacitors in parallel to obtain a full-wave bridge diode rectifying circuit a; the manufacturing method of the full-wave bridge diode rectifying circuit b is the same as that of the full-wave bridge diode rectifying circuit b; finally, 2 monolithic capacitors are connected in parallel with the electrolytic capacitor, and the structure is shown in fig. 6.
Experimental verification
The electrical properties of the piezoelectric film 8 and the electromagnetic induction coil 5 were measured by an oscilloscope at a motion frequency of 2Hz, as shown in fig. 4 and 5, and the results are shown in table 1:
TABLE 1 Electrical Properties of a simple pendulum type human body movement energy harvester
| Maximum voltage (V) | Minimum voltage (V) | Peak voltage (V) | |
| Piezoelectric film | 8.0 | -4.0 | 12.0 |
| Electromagnetic induction coil | 0.18 | -0.18 | 0.36 |
From table 1, the following conclusions can be drawn:
(1) the oscilloscope measures that the piezoelectric film 8 and the electromagnetic induction coil 5 both have obvious voltage amplitude changes, which shows that the piezoelectric film 8 and the electromagnetic induction coil 5 can convert the mechanical energy of the human body into electric energy;
(2) the piezoelectric film 8 has obvious peak value change and higher output voltage, which shows that the single pendulum type human body movement energy collector has good energy conversion efficiency;
(3) according to the voltage waveform diagram of the electromagnetic induction coil 5, when the single pendulum type human body motion energy collector of the invention is swung every time, the maximum value and the minimum value wave peaks output by the electromagnetic induction coil 5 can be kept in a stable range, which indicates that the single pendulum type human body motion energy collector can continuously and stably convert the human body mechanical energy into the electric energy.
In conclusion, the single pendulum type human body movement energy collector combines the high transient voltage of the piezoelectric film 8 and the large current function of the electromagnetic induction coil 5, has the advantages of high voltage and large current, and also has good output and energy conversion efficiency.
Claims (3)
1. A single pendulum type human motion energy collector is characterized by comprising a hollow shell (2), two sides of the shell (2) close to the bottom end are oppositely provided with two round holes (6), an electromagnetic induction coil (5) is arranged in the round hole (6), a cylindrical pin (7) is arranged in the shell (2), the cylindrical pin (7) is vertical to the side surface of the shell (2) where the round hole (6) is positioned, the cylindrical pin (7) is sleeved with a swing rod (1), the other end of the swing rod (1) is vertically provided with a connecting pin (4), magnets (3) are arranged at two ends of the connecting pin (4), a gap is arranged between each magnet (3) and the corresponding round hole (6), the inner wall of the shell (2) close to the magnet (3) is provided with at least two piezoelectric films (8), and the surfaces of the piezoelectric films (8) are all contacted with the magnet (3);
electrodes are pasted on the upper surface and the lower surface of the piezoelectric film (8), the two electrodes are any one of a copper electrode, an aluminum electrode and conductive silver paste, and both the two electrodes are provided with leads and are led out through the round holes (6);
the homopolar opposite arrangement of two said magnets (3), said magnet (3) is cylindrical, said magnet (3) is a neodymium iron boron magnet;
the two electromagnetic induction coils (5) are copper coils, are provided with conducting wires and are led out through round holes (6), and the electromagnetic induction coils (5) are OA-1/2UEW pure copper polyurethane enameled wires;
substrates are arranged on the outer sides of the two electrodes, and the substrates are polyimide films;
the piezoelectric film (8), the electrodes and the substrate are all rectangular, the length and the width of each electrode are smaller than those of the piezoelectric film (8), the length of each piezoelectric film (8) is smaller than that of the substrate, and the width of each piezoelectric film (8) is the same as that of the substrate; the piezoelectric film (8) is arc-shaped, and two ends of the piezoelectric film are both stuck to the inner side of the shell (2); the piezoelectric film (8) is a MEAS piezoelectric film.
2. The acquisition method of the single pendulum type human motion energy harvester according to claim 1, characterized by comprising the following steps:
step 1, manufacturing a full-wave bridge diode rectifying circuit, wherein the full-wave bridge diode rectifying circuit comprises a full-wave bridge diode rectifying circuit a and a full-wave bridge diode rectifying circuit b which are connected in parallel;
2, connecting wires of the two electrodes with a wiring port of a full-wave bridge diode rectifying circuit a, connecting wires of the electromagnetic induction coil (5) with a wiring port of a full-wave bridge diode rectifying circuit b, and connecting output ports of the full-wave bridge diode rectifying circuit a and the full-wave bridge diode rectifying circuit b with input ports of electronic devices of intelligent wearable products respectively;
step 3, wearing the micro-power electronic device on an arm or a lower leg of a human body, driving the swing rod (1) to swing by the arm or the lower leg when the human body walks, enabling the magnet (3) to be close to the electromagnetic induction coil (5) on one side of the shell (2) when the swing rod (1) swings towards one side of the shell (2), cutting the magnetic induction line by the electromagnetic induction coil (5) to generate a forward induction current, and transmitting the current to the full-wave bridge diode rectifying circuit b through a lead; meanwhile, the magnet (3) extrudes the piezoelectric film (8) to deform, and charges are transmitted to the full-wave bridge diode rectifying circuit a through a lead of the electrode;
when the swing rod (1) swings to the other side of the shell (2), the magnet (3) is close to the electromagnetic induction coil (5) on the other side of the shell (2), the electromagnetic induction coil (5) cuts the magnetic induction line to generate reverse induction current, and the current is transmitted to the full-wave bridge diode rectifying circuit b through a lead; meanwhile, the magnet (3) extrudes the piezoelectric film (8) to deform, and charges are transmitted to the full-wave bridge diode rectifying circuit a through a lead of the electrode;
and 4, finishing a cycle of electric energy storage when the oscillating bar (1) returns to the initial position, repeating the step 3, converting mechanical energy of human body movement into electric energy to be stored in the full-wave bridge type diode rectifying circuit, and continuously supplying power to the electronic device of the intelligent wearable product.
3. The acquisition method of the single pendulum type human body movement energy harvester of claim 2, wherein the full wave bridge type diode rectification circuit a and the full wave bridge type diode rectification circuit b have the same structure.
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| CN201910703535.8A CN110401376B (en) | 2019-07-31 | 2019-07-31 | Single pendulum type human motion energy collector and collection method thereof |
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| CN102025289B (en) * | 2010-11-18 | 2014-11-05 | 中兴通讯股份有限公司 | Portable generating set and intelligent terminal |
| KR20150124229A (en) * | 2014-04-28 | 2015-11-05 | 안동대학교 산학협력단 | Power generation apparatus using piezoelectric element vibrating by using elastic supporting means |
| CN106849596A (en) * | 2017-04-06 | 2017-06-13 | 中国人民解放军后勤工程学院 | A kind of energy composite energy collection type human body power TRT based on single pendulum and piezo-electric effect |
| CN109427955B (en) * | 2017-08-31 | 2023-04-25 | 北京纳米能源与系统研究所 | Self-driven multistage sensor, preparation method thereof, sensing method and electronic skin |
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