CN107294341B - Portable vibration energy collector - Google Patents
Portable vibration energy collector Download PDFInfo
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- CN107294341B CN107294341B CN201710709983.XA CN201710709983A CN107294341B CN 107294341 B CN107294341 B CN 107294341B CN 201710709983 A CN201710709983 A CN 201710709983A CN 107294341 B CN107294341 B CN 107294341B
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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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Abstract
The invention describes a portable vibration energy collector which comprises a frame, a copper coil, a magnet group and two angle adjusting wheels, wherein the copper coil is arranged on the frame; the copper coils are respectively attached to the inner sides of the frames; two adjusting wheels are fixed at two ends of the second magnet; the first magnet and the third magnet are respectively arranged on the periphery of the second magnet in an adsorbing way by means of magnetic attraction; the first magnet is fixed on the edge of the second magnet; the first magnet and the second magnet do not come into contact due to the repulsive force therebetween. The invention uses the repulsion between the first magnet and the third magnet to form a nonlinear spring, when the third magnet is excited by the outside, the third magnet can do reciprocating motion along the periphery of the second magnet, thereby causing the change of magnetic flux in the coil, converting the motion energy into electric energy and realizing the collection of vibration energy.
Description
Technical Field
The invention relates to the technical field of energy collectors, in particular to a portable energy collector, and particularly relates to a portable energy collector capable of responding to the movement of a human body and a moving object.
Background
With the increasing demand for energy and the limitation of conventional batteries, energy harvesting technology is one direction to solve the energy problem. Energy dispersed in the environment is converted into usable energy by energy harvesting techniques. For example, mechanical energy received is converted into electric energy by a piezoelectric effect, optical energy is converted into electric energy by a photoelectric conversion effect, and redundant thermal energy is converted into electric energy by a thermoelectric effect. Among these available energy sources, the mechanical energy in the form of vibrations is widely distributed in the environment. Many objects exhibit vibrations of a certain frequency, such as trains, cars, buildings and bridges, and also certain vibrations are generated by the daily activities of people. If this vibrational energy is converted into usable electrical energy, the electronics can be powered. Vibration-based energy collectors mainly work in electromagnetic, electrostatic and piezoelectric modes. The piezoelectric energy collector has the characteristics of high output voltage and high working frequency; the electrostatic energy collector has the characteristic of high power output; the electromagnetic energy collector has the characteristics of large output current and small voltage. Most of the existing vibration-based energy collectors can only respond to vibration in a single direction, need higher working frequency, can only work in specific occasions, and are inconvenient to move and carry.
Disclosure of Invention
In order to solve the technical problems, the invention provides a portable energy collector which can respond to vibration in vertical and horizontal directions according to needs, can effectively convert vibration energy into electric energy and can be carried about.
The technical scheme for realizing the invention is as follows: the utility model provides a portable vibration energy collector, includes the frame, coil and magnet group, magnet group sets up in the frame, the relative coil motion of magnet group, magnet group includes first magnet, second magnet and third magnet, the outline of first magnet, second magnet and third magnet be circular, the second magnet is fixed to be set up in the frame, first magnet and third magnet rely on the periphery of attraction absorption at the second magnet respectively, the magnetization direction of second magnet and first magnet and third magnet is opposite, is equipped with the clearance between the curb plate inner wall of third magnet and frame, the coil setting on the curb plate inner wall of frame.
The relative position of the first magnet and the second magnet is kept unchanged.
The number of the coils is at least 2, and the coils are connected in series.
The coil is in a circular ring shape, and the area enclosed by the outer contour of the coil is consistent with the area covered by the movement of the third magnet.
The two end faces of the second magnet are respectively provided with a gear-shaped adjusting wheel, the frame is provided with a tooth-shaped hole matched with the gear-shaped adjusting wheel, and the adjusting wheels adjust the relative positions of the first magnet and the second magnet with the frame.
The second magnet is ring shape, is equipped with the circular port on frame and the second magnet, and the fixed second magnet of circular port on second magnet and the frame is passed to the magnetic conduction bolt not.
The first magnet, the second magnet and the third magnet are made of neodymium iron boron.
The coil has 320 turns, and its thickness is 3mm, and the internal diameter is 2mm, and the external diameter is 25mm, and the line footpath is 0.3 mm.
The diameter of first magnet be 5mm, the height be 10mm, the external diameter of second magnet be 20mm, the internal diameter be 10mm, the height be 10mm, the diameter of third magnet be 20mm, the height 10 mm.
The outer diameter of the coil is larger than the diameter of the third magnet.
When the portable energy collector works, the portable energy collector can be vertically arranged and is mainly used for responding to vertical vibration and collecting energy; and the device can also be horizontally arranged and is mainly used for responding to horizontal vibration and collecting energy. When the portable energy collector is subjected to vibration excitation in a certain direction, the third magnet starts to move under the vibration excitation, the third magnet rolls on the outline of the excircle of the second magnet due to the fact that the third magnet and the second magnet are opposite in magnetization direction and magnetic attraction force exists between the third magnet and the second magnet, and meanwhile, due to the fact that the third magnet and the first magnet are same in magnetization direction, magnetic repulsive force exists between the third magnet and the first magnet, and the repulsive force enables the third magnet to reciprocate. When the third magnet reciprocates, the coil arranged on the inner wall of the side plate and the magnetic field of the third magnet move relatively, so that the phenomenon of cutting magnetic lines exists, and induced electromotive force (induced voltage) can be generated in the coil according to the Faraday's law of electromagnetic induction. If loads, such as diode lamps, are connected to two ends of the output line of the coil, power supply and lighting can be directly carried out; if the two ends of the coil output line are connected with the storage circuit, the induction voltage can be collected and stored, and the device is similar to an electromagnetic kinetic energy collecting battery. Because the third magnet moves in the space formed by the two side plates, and gaps are formed between two end faces of the third magnet and the inner walls of the side plates, induction coils can be arranged on the inner walls of the two side plates, and the two coils are connected in series to increase the output amplitude of the induction voltage.
The relative positions of the first magnet and the second magnet are kept unchanged, so that the movement area of the third magnet is limited, and the energy collection effect can be enhanced. Because the magnetization directions of the first magnet and the third magnet are the same, when the third magnet moves around the outer circumference of the second magnet under the action of external vibration, the third magnet is subjected to gradually increased magnetic repulsion force when approaching the first magnet, and the repulsion force can make the third magnet decelerate and move in the opposite direction on one hand, and can make the first magnet move on the other hand, so that partial energy consumption of the third magnet is dissipated. If the relative position of the first magnet and the second magnet is fixed, the magnetic repulsive force (also understood as magnetic potential energy) of the first magnet and the third magnet can be completely used to make the third magnet move in the opposite direction, the response efficiency of the third magnet to external vibration can be increased, as the number of times of the reciprocating movement of the third magnet along the outer periphery of the second magnet increases, so that the number of times of the change of the magnetic flux in the coil increases, and the electromagnetic induction voltage is increased.
The relative positions of the first magnet and the frame and the second magnet can be adjusted in the circumferential direction, and the relative positions of the first magnet and the frame and the second magnet can be adjusted according to different use environment occasions, so that the purpose of collecting more energy is achieved. For example, the environmental vibration is mainly vertical, and the positions of the first magnet and the second magnet in the circumferential direction can be adjusted to make the axis of the third magnet be in the horizontal plane as much as possible.
The whole coil is in a partial circular ring shape, and the area enclosed by the outer contour of the coil is consistent with the area covered by the movement of the third magnet. The outer circumference of the second magnet is circular, and the outer circumference of the third magnet is circular, so that the area covered by the third magnet moving around the outer circumference of the second magnet is a part of a circular ring, the area of the circular ring corresponds to the area of the circular ring, and the inner wall of the side plate is provided with a coil, so that the electromagnetic induction can be better utilized.
Two end faces of the second magnet are respectively provided with a gear-shaped adjusting wheel, correspondingly, two side plates of the frame are provided with tooth-shaped holes matched with the tooth-shaped adjusting wheels, and the relative positions of the first magnet and the second magnet and the frame can be adjusted through the tooth-shaped adjusting wheels according to the requirements of use occasions. The adjusting mode at least adjusts the included angle of two adjacent teeth each time, and the adjustable minimum angle is determined according to the number of the teeth.
The second magnet is ring shape, correspondingly, at the both sides board circular port of frame, the hole on second magnet and the frame both sides board is passed to the magnetic bolt that does not lead, utilizes the magnetic bolt that does not lead, nut to make the both sides board of frame press from both sides tight second magnet, loosens bolt, nut and can adjust first magnet and second magnet and frame relative position. Because the second magnet is fastened with the two side plates by the pretightening force of the bolt, the angular positions of the second magnet and the first magnet in the circumferential direction can be continuously adjusted when the bolt is loosened.
Of course, the adjustment of the first magnet and the second magnet in the circumferential direction may also take other forms, such as a spring and a positioning form of a clamping bead.
The first magnet, the second magnet and the third magnet are made of neodymium iron boron, and the neodymium iron boron magnet is a permanent magnet with the strongest magnetic force so far and can provide stronger magnetic field intensity.
The invention has the beneficial effects that: utilize the appeal of second magnet and third magnet to make the third magnet adsorb on the second magnet, be line contact between the two, the resistance that receives when the third magnet moves is less, and energy loss is less, can the external vibration of quick response moreover. The first magnet is fixed at the edge of the second magnet, repulsive force exists between the second magnet and the third magnet, the third magnet keeps stress balance at a specific position due to the particularity of the structural form, and when the third magnet is excited, the third magnet can reciprocate in a specific area, so that the magnetic flux in the coil is changed, and induced electromotive force is generated in the induction coil due to the change of the magnetic flux, and mechanical energy is converted into electric energy.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an exploded view 1 of embodiment 1.
Fig. 2 is a schematic structural diagram of an exploded view 2 of embodiment 1.
FIG. 3 is a front view of embodiment 1.
Fig. 4 is a schematic structural diagram of an exploded view 4 of embodiment 2.
FIG. 5 is a front view of embodiment 2.
FIG. 6 shows the output voltage detected by the multimeter of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
Example 1
As shown in fig. 1-3, a portable vibration energy collector comprises a frame 1, a coil 2, an adjusting wheel 3, and a magnet set 4, wherein the magnet set comprises a first magnet 41, a second magnet 42, and a third magnet 43, the outer contours of the first magnet 41, the second magnet 42, and the third magnet 43 are circular, the second magnet 42 is fixedly disposed in the frame, the first magnet 41 and the third magnet 43 are respectively disposed on the outer periphery of the second magnet 42 by magnetic attraction, the magnetization directions of the second magnet 42 and the first magnet 41 and the third magnet 43 are opposite, a gap is disposed between two end surfaces of the third magnet 43 and two side plate inner walls of the frame 1, and the coil 2 is disposed on the inner side walls of the side plates of the frame 1 and corresponds to the movement region of the third magnet 43. A plurality of coils are arranged along the movement locus of the third magnet 43, and the coils 2 are connected in series. When the third magnet 43 moves around the second magnet 42, the magnetic flux in the coil 2 changes, and a voltage is generated across the coil, so that an induced electromotive force is generated in the induction coil due to the change of the magnetic flux, and mechanical energy is converted into electric energy.
The two ends of the second magnet 42 are provided with the toothed adjusting wheels 3, and correspondingly, the two side plates of the frame 1 are provided with the toothed holes 31 matched with the toothed adjusting wheels 3, so that the positions of the first magnet 41 and the second magnet 42 relative to the frame can be adjusted according to needs, for example, the positions of the first magnet and the second magnet can be adjusted to fully respond to vibration in a certain direction, so that the central connecting line of the second magnet and the third magnet is perpendicular to the direction.
Preferably, the outer diameter of the coil 2 is slightly larger than the diameter of the third magnet 43 for higher collection efficiency.
In use, the end faces of the three magnets are perpendicular to the horizontal plane in order to be able to respond to vibrations in the vertical direction. The third magnet 43 reciprocates up and down along the outer circumference of the second magnet 42 under the action of external vertical vibration, and the magnetic field distribution of the third magnet also moves along with the movement, so that relative movement is generated between the coil and the magnetic field of the third magnet 43, and induced electromotive force is generated. If the external vibration is in the horizontal direction, the end surfaces of the three magnets are parallel to the horizontal plane, which facilitates the third magnet 43 to respond to the external vibration and move along the outer circumference of the second magnet 42. If the external vibration is the combined vibration in the vertical direction and the horizontal direction, the end faces of the three magnets need to be perpendicular to the horizontal plane, and the circumferential positions of the first magnet 41 and the second magnet 42 need to be adjusted, so that the included angle between the central connecting line of the third magnet and the second magnet and the external excitation force is larger than 0 degree and smaller than 180 degrees.
The invention uses the repulsive force between the magnets to form a nonlinear spring-mass system, and the second magnet can cause the change of the magnetic flux of the induction coil when reciprocating, so that the induced electromotive force is generated in the coil and is connected to a power management circuit for collection through a lead wire extending out of the coil.
Example 2
As shown in fig. 4 and 5, a portable vibration energy collector comprises a frame 1, a coil 2, a magnet set 4, wherein the magnet set 4 is arranged in the frame 1, the magnet set 4 can move relative to the coil 2 and comprises a first magnet 41, a second magnet 42 and a third magnet 43; the first magnet 41, the second magnet 42, and the third magnet 43 have circular outer contours, and the second magnet 42 is a ring magnet; the first magnet 41 and the third magnet 43 are respectively arranged on the periphery of the second magnet 42 by means of the attraction of magnetic attraction; the second magnet 42 is opposite to the first magnet 41 and the third magnet 43 in magnetization direction, and a gap is arranged between two end surfaces of the third magnet 43 and the inner walls of two side plates of the frame; the coil is disposed on the inner side wall of the side plate of the frame and corresponds to the movement range of the third magnet 43. A plurality of coils are arranged along the movement locus of the third magnet 43, and the coils are connected in series. When the third magnet 43 moves around the second magnet 42, the magnetic flux in the coil changes, and thus a voltage is generated across the coil, so that an induced electromotive force is generated in the induction coil due to the change of the magnetic flux, and mechanical energy is converted into electrical energy.
The non-magnetic bolts pass through the second magnet 42 and corresponding holes in the frame, and are matched with the non-magnetic nuts to clamp the second magnet 42, so that the positions of the first magnet 41 and the second magnet 42 relative to the frame are not changed, the nuts can be loosened if the positions of the first magnet 41 and the second magnet 42 need to be adjusted, and then the first magnet 41 and the second magnet 42 are rotated to the required positions.
The other structure and operation are the same as those of embodiment 1.
The present invention utilizes the repulsive force between the magnets to form a non-linear spring-mass system, and the second magnet 42, when reciprocating, causes the change of the magnetic flux of the induction coil, thereby generating induced electromotive force in the coil, which is connected to the power management circuit for collection through the lead wire extended from the coil.
Example 3
A portable vibration energy harvester comprises a frame, a coil and a magnet set, wherein the magnet set comprises a first magnet 41, a second magnet 42 and a third magnet 43, the first magnet 41 and the third magnet 43 are cylindrical magnets, and the second magnet is a ring magnet; the diameter of first magnet be 5mm highly for 10mm, the external diameter of second magnet 42 is 20mm, the internal diameter is 10mm, highly is 10mm, the diameter of third magnet is 20mm, highly 10mm, wherein first magnet 41 and second magnet 42 adopt the neodymium iron boron magnet that the trade mark is N35, third magnet 43 adopts the neodymium iron boron magnet that the trade mark is N52. Two side plates of the frame are provided with round holes with the diameter of 10mm, a plastic bolt penetrates through the second magnet 42 and the holes in the two side plates of the frame, the second magnet 42 is fastened with the two side plates by utilizing the pretightening force of the bolt, and the positions of the first magnet 41 and the second magnet 42 relative to the frame are unchanged. The portable vibration energy collector has the total length of 65mm, the total width of 60mm and the thickness of 27 mm; the first magnet 41 and the third magnet 43 are respectively arranged on the periphery of the second magnet 42 by means of the attraction of magnetic attraction; the first magnet is fixed on the periphery of the second magnet 42 by glue, and the relative position of the first magnet 41 and the second magnet 42 is kept unchanged, so that the movement area of the third magnet 43 is limited; the energy harvester is horizontally arranged, and the circumferential positions of the first magnet and the second magnet 42 are adjusted around the bolt, so that the third magnet 43 is positioned at the middle point of the movement range of the third magnet when the third magnet is static; the second magnet 42 has a magnetization direction opposite to that of the first magnet 41 and the third magnet 43, and a gap is provided between both end surfaces of the third magnet 43 and the inner walls of both side plates of the frame. When the portable energy collector is subjected to vibration excitation in a certain direction, the third magnet 43 starts to move under the vibration excitation, and due to the fact that the third magnet 43 and the second magnet 42 are opposite in magnetization direction and have magnetic attraction therebetween, the third magnet 43 rolls on the outer circle contour of the second magnet 42, and meanwhile, due to the fact that the third magnet 43 and the first magnet 41 are the same in magnetization direction, magnetic repulsive force exists between the third magnet 43 and the first magnet 41, when the third magnet 43 approaches the first magnet 41, gradually-increased magnetic repulsive force is received, the repulsive force can enable the third magnet 43 to decelerate and move in the opposite direction, and the repulsive force enables the third magnet 43 to reciprocate. Since the third magnet 43 moves in the space formed by the two side plates, there is a gap between both end faces of the third magnet 43 and the inner walls of the side plates, so that the induction coils can be disposed on the inner walls of the two side plates.
The coils described in this embodiment are disposed on the inner side wall of the side plate of the frame, and three coils are disposed on each side wall, and these 3 coils are respectively located at two end points and the middle position of the movement range of the third magnet 43; each coil has 320 turns, the thickness of the coil is 3mm, the inner diameter of the coil is 2mm, the outer diameter of the coil is 25mm, and the wire diameter of the coil is 0.3 mm; in order to increase the output amplitude of the induced voltage, 6 coils were connected in series with a total impedance of 21.4 ohms. When the portable energy collector works, the portable energy collector can be vertically arranged and is mainly used for responding to vertical vibration and collecting energy; and the device can also be horizontally arranged and is mainly used for responding to horizontal vibration and collecting energy. When the third magnet 43 reciprocates, the coil provided on the inner wall of the side plate and the magnetic field of the third magnet 43 move relatively to each other, and there is a phenomenon of cutting magnetic lines of force, and an induced electromotive force (induced voltage) is generated in the coil according to the faraday's law of electromagnetic induction. If loads, such as diode lamps, are connected to two ends of the output line of the coil, power supply and lighting can be directly carried out; if the two ends of the coil output line are connected with the storage circuit, the induction voltage can be collected and stored, and the device is similar to an electromagnetic kinetic energy collecting battery. As shown in FIG. 6, when the portable energy collector is held by hand to shake in a horizontal plane, and the frequency of shaking is 2-12Hz, experiments can be carried out, considerable voltage output can be obtained, when the frequency of shaking is near 6Hz, the effective value of the output induced voltage of the energy collector is recorded by using a universal meter (Gishili 2000E), and the maximum value of the induced voltage can reach 2.22V.
Preferably, in order to expand the application range, the bolt can be loosened, the relative position of the first magnet and the second magnet can be adjusted, and the position of the third magnet 43 can be further adjusted, so that the energy collector can collect more energy.
Example 4
A portable vibration energy harvester comprises a frame, a coil and a magnet set, wherein the magnet set comprises a first magnet 41, a second magnet 42 and a third magnet 43, the first magnet 41 and the third magnet 43 are cylindrical magnets, and the second magnet is a ring magnet; the diameter of first magnet be 5mm highly for 10mm, the external diameter of second magnet 42 is 20mm, the internal diameter is 10mm, highly is 10mm, the diameter of third magnet is 20mm, highly 10mm, wherein first magnet 41 and second magnet 42 adopt the neodymium iron boron magnet that the trade mark is N35, third magnet 43 adopts the neodymium iron boron magnet that the trade mark is N52. Two side plates of the frame are provided with round holes with the diameter of 10mm, a plastic bolt penetrates through the second magnet 42 and the holes in the two side plates of the frame, the second magnet 42 is fastened with the two side plates by utilizing the pretightening force of the bolt, and the positions of the first magnet 41 and the second magnet 42 relative to the frame are unchanged. The portable vibration energy collector has the total length of 65mm, the total width of 60mm and the thickness of 27 mm; the first magnet 41 and the third magnet 43 are respectively arranged on the periphery of the second magnet 42 by means of the attraction of magnetic attraction; the first magnet is fixed on the periphery of the second magnet 42 by glue, and the relative position of the first magnet and the second magnet is kept unchanged, so that the movement area of the third magnet 43 is limited; the energy harvester is horizontally arranged, and the circumferential positions of the first magnet and the second magnet 42 are adjusted around the bolt, so that the third magnet 43 is positioned at the middle point of the movement range of the third magnet when the third magnet is static; the second magnet 42 has a magnetization direction opposite to that of the first magnet 41 and the third magnet 43, and a gap is provided between both end surfaces of the third magnet 43 and the inner walls of both side plates of the frame. When the portable energy collector is subjected to vibration excitation in a certain direction, the third magnet 43 starts to move under the vibration excitation, and due to the fact that the third magnet 43 and the second magnet 42 are opposite in magnetization direction and have magnetic attraction therebetween, the third magnet 43 rolls on the outer circle contour of the second magnet 42, and meanwhile, due to the fact that the third magnet 43 and the first magnet 41 are the same in magnetization direction, magnetic repulsive force exists between the third magnet 43 and the first magnet 41, when the third magnet 43 approaches the first magnet 41, gradually-increased magnetic repulsive force is received, the repulsive force can enable the third magnet 43 to decelerate and move in the opposite direction, and the repulsive force enables the third magnet 43 to reciprocate. Since the third magnet 43 moves in the space formed by the two side plates, there is a gap between both end faces of the third magnet 43 and the inner walls of the side plates, so that the induction coils can be disposed on the inner walls of the two side plates.
The coils described in this embodiment are arranged on the inner side walls of the side plates of the frame, and 4 coils are arranged on each side wall, the 4 coils are wholly in a partial circular ring shape, and the area enclosed by the outer contours of the coils is consistent with the area covered by the movement of the third magnet 43; each coil has 320 turns, the thickness of the coil is 3mm, the inner diameter of the coil is 2mm, the outer diameter of the coil is 25mm, and the wire diameter of the coil is 0.3 mm; to increase the output amplitude of the induced voltage, 8 coils were connected in series with a total impedance of 28.6 ohms. When the portable energy collector works, the portable energy collector can be vertically arranged and is mainly used for responding to vertical vibration and collecting energy; and the device can also be horizontally arranged and is mainly used for responding to horizontal vibration and collecting energy. When the third magnet 43 reciprocates, the coil provided on the inner wall of the side plate and the magnetic field of the third magnet 43 move relatively to each other, and there is a phenomenon of cutting magnetic lines of force, and an induced electromotive force (induced voltage) is generated in the coil according to the faraday's law of electromagnetic induction. If loads, such as diode lamps, are connected to two ends of the output line of the coil, power supply and lighting can be directly carried out; if the two ends of the coil output line are connected with the storage circuit, the induction voltage can be collected and stored, and the device is similar to an electromagnetic kinetic energy collecting battery. As shown in FIG. 6, when the portable energy collector is held by hand to shake in a horizontal plane, and the frequency of shaking is 2-12Hz, experiments can be carried out, considerable voltage output can be obtained, when the frequency of shaking is near 6Hz, the effective value of the output induced voltage of the energy collector is recorded by using a universal meter (Gishili 2000E), and the maximum value of the induced voltage can reach 2.22V.
Preferably, in order to expand the application range, the bolt can be loosened, the relative position of the first magnet and the second magnet can be adjusted, and the position of the third magnet 43 can be further adjusted, so that the energy collector can collect more energy.
Example 5
A portable vibration energy harvester comprising a frame, a coil and a magnet set, wherein the magnet set comprises a first magnet 41, a second magnet 42 and a third magnet 43, and the first magnet 41, the second magnet 42 and the third magnet 43 are cylindrical magnets; the diameter of first magnet be 5mm highly for 10mm, the diameter of second magnet 42 is 20mm, highly is 10mm, the diameter of third magnet is 20mm, highly 10mm, wherein first magnet 41 and second magnet 42 adopt the neodymium iron boron magnet that the trade mark is N35, third magnet 43 adopts the neodymium iron boron magnet that the trade mark is N52. Two side plates of the frame are provided with tooth-shaped holes corresponding to the tooth-shaped adjusting wheels; the tooth-shaped adjusting wheel is used for fixing two sides of the second magnet 42, 12 teeth are uniformly distributed on the tooth-shaped adjusting wheel, and the diameter of the tooth-shaped adjusting wheel is 20 mm; the positions of the first magnet 41 and the second magnet 42 relative to the frame are not changed by matching with the toothed holes on the two side plates on the frame, and the positions of the first magnet 41 and the second magnet 42 relative to the frame can be adjusted according to requirements. The portable vibration energy collector has the total length of 65mm, the total width of 60mm and the thickness of 20 mm; the first magnet 41 and the third magnet 43 are respectively arranged on the periphery of the second magnet 42 by means of the attraction of magnetic attraction; the first magnet is fixed on the periphery of the second magnet 42 by glue, and the relative position of the first magnet and the second magnet is kept unchanged, so that the movement area of the third magnet 43 is limited; the energy collector is horizontally arranged, and the circumferential positions of the first magnet and the second magnet 42 are adjusted by using a tooth-shaped adjusting wheel, so that the third magnet 43 is positioned at the middle point of the movement range when the third magnet is static; the second magnet 42 has a magnetization direction opposite to that of the first magnet 41 and the third magnet 43, and a gap is provided between both end surfaces of the third magnet 43 and the inner walls of both side plates of the frame. When the portable energy collector is subjected to vibration excitation in a certain direction, the third magnet 43 starts to move under the vibration excitation, and due to the fact that the third magnet 43 and the second magnet 42 are opposite in magnetization direction and have magnetic attraction therebetween, the third magnet 43 rolls on the outer circle contour of the second magnet 42, and meanwhile, due to the fact that the third magnet 43 and the first magnet 41 are the same in magnetization direction, magnetic repulsive force exists between the third magnet 43 and the first magnet 41, when the third magnet 43 approaches the first magnet 41, gradually-increased magnetic repulsive force is received, the repulsive force can enable the third magnet 43 to decelerate and move in the opposite direction, and the repulsive force enables the third magnet 43 to reciprocate. Since the third magnet 43 moves in the space formed by the two side plates, there is a gap between both end faces of the third magnet 43 and the inner walls of the side plates, so that the induction coils can be disposed on the inner walls of the two side plates.
The coils described in this embodiment are disposed on the inner side wall of the side plate of the frame, and three coils are disposed on each side wall, and these 3 coils are respectively located at two end points and the middle position of the movement range of the third magnet 43; each coil has 320 turns, the thickness of the coil is 3mm, the inner diameter of the coil is 2mm, the outer diameter of the coil is 25mm, and the wire diameter of the coil is 0.3 mm; in order to increase the output amplitude of the induced voltage, 6 coils were connected in series with a total impedance of 21.4 ohms. When the portable energy collector works, the portable energy collector can be vertically arranged and is mainly used for responding to vertical vibration and collecting energy; and the device can also be horizontally arranged and is mainly used for responding to horizontal vibration and collecting energy. When the third magnet 43 reciprocates, the coil provided on the inner wall of the side plate and the magnetic field of the third magnet 43 move relatively to each other, and there is a phenomenon of cutting magnetic lines of force, and an induced electromotive force (induced voltage) is generated in the coil according to the faraday's law of electromagnetic induction. If loads, such as diode lamps, are connected to two ends of the output line of the coil, power supply and lighting can be directly carried out; if the two ends of the coil output line are connected with the storage circuit, the induction voltage can be collected and stored, and the device is similar to an electromagnetic kinetic energy collecting battery. As shown in FIG. 6, when the portable energy collector is held by hand to shake in a horizontal plane, and the frequency of shaking is 2-12Hz, experiments can be carried out, considerable voltage output can be obtained, when the frequency of shaking is near 6Hz, a multimeter (KEITHLEY 2000E) is used for recording the effective value of the output induced voltage of the energy collector, and the maximum value of the induced voltage can reach 2.22V.
Preferably, in this embodiment, in order to expand the application range, the tooth-shaped adjusting wheel is used to adjust the relative position of the first magnet and the second magnet, and further adjust the position of the third magnet 43, so that the energy harvester can collect more energy.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. A portable vibration energy collector, includes frame (1), coil (2) and magnet group (4), and magnet group (4) set up in frame (1), and magnet group (4) moves its characterized in that relative coil (2): the magnet group (4) comprises a first magnet (41), a second magnet (42) and a third magnet (43), the outer contours of the first magnet (41), the second magnet (42) and the third magnet (43) are circular, the second magnet (42) is fixedly arranged in the frame (1), the first magnet (41) and the third magnet (43) are respectively adsorbed on the periphery of the second magnet (42) by means of magnetic attraction, the magnetization directions of the second magnet (42) and the first magnet (41) and the magnetization direction of the third magnet (43) are opposite, a gap is formed between the third magnet (43) and the inner wall of the side plate of the frame (1), and the coil (2) is arranged on the inner wall of the side plate of the frame (1); the relative positions of the first magnet (41) and the second magnet (42) are kept unchanged, and the relative positions of the first magnet (41) and the second magnet (42) and the frame (1) can be adjusted in the circumferential direction; the two end faces of the second magnet (42) are respectively provided with a gear-shaped adjusting wheel (3), the frame (1) is provided with a toothed hole (31) matched with the gear-shaped adjusting wheel (3), and the adjusting wheel (3) adjusts the relative positions of the first magnet (41) and the second magnet (42) with the frame (1).
2. The portable vibration power harvester of claim 1 wherein the number of coils (2) is at least 2 and the coils (2) are connected in series.
3. The portable vibration power harvester according to claim 1 or 2 wherein the coil (2) is circular and the area enclosed by the outer contour of the coil (2) is the same as the area covered by the movement of the third magnet (43).
4. The portable vibration power harvester of claim 1 or 2 wherein: second magnet (42) are the ring shape, are equipped with the circular port on frame (1) and second magnet (42), and second magnet (42) are fixed to the circular port on second magnet (42) and frame (1) is passed to the magnetic conduction bolt not.
5. The portable vibration power harvester of claim 1 wherein: the first magnet (41), the second magnet (42) and the third magnet (43) are made of neodymium iron boron.
6. The portable vibration power harvester of claim 2 wherein: each coil (2) has 320 turns, and its thickness is 3mm, and the internal diameter is 2mm, and the external diameter is 25mm, and the line footpath is 0.3 mm.
7. The portable vibration power harvester of claim 1 wherein: the diameter of the first magnet (41) is 5mm, the height of the first magnet is 10mm, the outer diameter of the second magnet (42) is 20mm, the inner diameter of the second magnet is 10mm, the height of the second magnet is 10mm, and the diameter of the third magnet (43) is 20mm, and the height of the third magnet is 10 mm.
8. The portable vibration power harvester of claim 1 wherein: the outer diameter of the coil (2) is larger than the diameter of the third magnet (43).
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| CN201710709983.XA CN107294341B (en) | 2017-08-18 | 2017-08-18 | Portable vibration energy collector |
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| CN201710709983.XA CN107294341B (en) | 2017-08-18 | 2017-08-18 | Portable vibration energy collector |
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| CN107294341B true CN107294341B (en) | 2020-02-07 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107681864B (en) * | 2017-11-10 | 2023-11-24 | 苏州大学 | Composite rotary energy collector |
| CN108400696A (en) * | 2018-02-27 | 2018-08-14 | 重庆理工大学 | More magnet structures applied to energy acquisition and sensing |
| GB2582776A (en) * | 2019-04-02 | 2020-10-07 | Univ Exeter | Electrical generation |
| CN110107446B (en) * | 2019-05-07 | 2020-08-18 | 湖南工程学院 | Magnetic field coupling wave energy collector |
| CN111864941B (en) * | 2020-07-29 | 2022-06-17 | 湖南工程学院 | High-robustness magnetic coupling full-sealing friction and electromagnetic composite road surface energy collecting device |
| CN112532011A (en) * | 2020-11-24 | 2021-03-19 | 上海大学 | Plane energy collector based on magnetic flux density abrupt change |
| CN114400859A (en) * | 2022-01-18 | 2022-04-26 | 郑州大学 | Magnetic rotation pendulum type multistable electromagnetic vibration energy capturing device |
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