CN114520578A - Differential electromagnetic type vibration energy collecting device - Google Patents
Differential electromagnetic type vibration energy collecting device Download PDFInfo
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- CN114520578A CN114520578A CN202210246831.1A CN202210246831A CN114520578A CN 114520578 A CN114520578 A CN 114520578A CN 202210246831 A CN202210246831 A CN 202210246831A CN 114520578 A CN114520578 A CN 114520578A
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- 238000005096 rolling process Methods 0.000 claims abstract description 46
- 238000006243 chemical reaction Methods 0.000 claims abstract description 14
- 238000003306 harvesting Methods 0.000 claims description 13
- 230000000452 restraining effect Effects 0.000 claims 1
- 230000006698 induction Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- 230000008859 change Effects 0.000 abstract description 3
- 230000005674 electromagnetic induction Effects 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 238000013461 design Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
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- 230000036541 health Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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- 238000004377 microelectronic 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
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/34—Reciprocating, oscillating or vibrating parts of the magnetic circuit
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
- H02K2201/18—Machines moving with multiple degrees of freedom
Abstract
The invention discloses a differential electromagnetic vibration energy acquisition device, which is characterized in that an annular chute is arranged on a bottom plate, a rolling ball in the annular chute induces multidirectional vibration on the bottom plate and then rolls in the annular chute, and the rolling ball rolls to drive the relative position of a strip-shaped limiting groove and an elliptical track to change, so that the relative position of a coil and a magnet in the strip-shaped limiting groove also changes, and in the moving process of the coil and the magnet, according to the Faraday's law of electromagnetic induction, the coil can cut a magnetic induction line to generate current, and the conversion of multidirectional vibration energy to electric energy in any plane is realized; meanwhile, when the relative position of the strip-shaped limiting groove and the elliptical orbit changes to a certain degree, the coil and the magnet in the strip-shaped limiting groove move towards/away from the center of the strip-shaped limiting groove at the same time, and a multi-directional vibration source in any plane is converted into differential impact on the electromagnetic energy conversion device through the rolling ball, so that micro energy is amplified, and the collection efficiency of vibration energy is obviously improved.
Description
Technical Field
The invention relates to the technical field of micro-energy collection, in particular to a differential electromagnetic vibration energy collecting device.
Background
In recent years, with the rapid development of microelectronic technology and wireless communication technology, wireless sensor networks are applied to the fields of environmental and ecological monitoring, health monitoring, home automation, traffic control and the like, and have attracted wide attention of people. However, the conventional power supply method based on chemical batteries has the limitations of short service life, difficult replacement, high cost and the like, and the power supply problem becomes a great obstacle for the large-scale application of the wireless sensor network. Vibration is ubiquitous in the environment, and the vibration energy in the environment is collected and converted into electric energy, so that the wireless sensor network is powered by replacing a traditional power supply, and the research hotspot in the field is formed. At present, the environmental vibration energy is collected in an electrostatic, electromagnetic, piezoelectric, etc. manner.
In practical application, the environmental vibration source has instability and randomness, has certain frequency bandwidth and also has multi-directionality; when the frequency and the vibration direction of the vibration source are not matched with the energy collector device, the output energy of the energy collector device is sharply reduced, and the collection efficiency is low, so that the application of the energy collector in a complex and variable vibration environment is limited. Meanwhile, most of the existing vibration energy collecting devices have the problems of low energy conversion efficiency and the like, and the energy collection cannot be effectively realized in the environment of multidirectional vibration micro-energy.
Disclosure of Invention
The invention aims to solve the problem that the existing vibration energy collecting device cannot efficiently collect multidirectional vibration micro energy in any plane, and provides an energy collecting device capable of collecting multidirectional vibration micro energy after differential amplification.
The invention solves the technical problems through the following technical scheme: a differential electromagnetic vibration energy harvesting device comprising:
the upper surface of the bottom plate is provided with an annular sliding groove, a strip-shaped limiting groove and an elliptical track, the annular sliding groove is fixedly arranged on the bottom plate, one of the strip-shaped limiting groove and the elliptical track is fixedly arranged, the other of the strip-shaped limiting groove and the elliptical track is movably arranged, the strip-shaped limiting groove is vertically intersected with the central axis of the annular sliding groove, and the central axis of the elliptical track is superposed with the central axis of the annular sliding groove;
the electromagnetic energy conversion device comprises a coil and a magnet which are arranged in the bar-shaped limiting groove and can move along the length direction of the bar-shaped limiting groove, wherein the coil and the magnet are respectively positioned at two ends of the bar-shaped limiting groove, one end of the coil and one end of the magnet are connecting ends which can be movably connected to the elliptical orbit, the other end of the coil and the other end of the magnet are free ends, the coil is opposite to the free ends of the magnet, and the length of the coil/the magnet is smaller than that of the short axis of the elliptical orbit;
The rolling ball is positioned in the annular sliding chute and is connected with one of the strip-shaped limiting groove and the elliptic track which is movably arranged;
when the bottom plate is vibrated in multiple directions, the rolling ball rolls in the annular sliding groove to drive one of the strip-shaped limiting groove and the oval track movably arranged to rotate, so that the coil and the magnet move towards/away from the center of the strip-shaped limiting groove at the same time to generate electric energy.
According to the differential electromagnetic vibration energy collecting device, the annular sliding groove is formed in the bottom plate, the rolling ball in the annular sliding groove induces multidirectional vibration on the bottom plate and then rolls in the annular sliding groove, the rolling ball rolls to drive the relative position of the strip-shaped limiting groove and the elliptical track to change, so that the relative position of the coil and the magnet in the strip-shaped limiting groove changes accordingly, and in the moving process of the coil and the magnet, the coil can cut a magnetic induction line to generate current according to the Faraday law of electromagnetic induction, and the conversion from multidirectional vibration energy to electric energy in any plane is realized; meanwhile, when the relative position of the strip-shaped limiting groove and the elliptical orbit changes to a certain degree, the coil and the magnet in the strip-shaped limiting groove move towards/away from the center of the strip-shaped limiting groove at the same time, and a multi-directional vibration source in any plane is converted into differential impact on the electromagnetic type energy conversion device through the rolling ball, so that micro energy is amplified, and the acquisition efficiency of vibration energy is obviously improved.
It should be noted that, as described in the present invention, one of the strip-shaped limiting groove and the elliptical orbit is fixedly disposed, and the other is movably disposed, wherein the fixed disposition means a fixed disposition relative to the bottom plate, and the movable disposition means a movable disposition relative to the bottom plate. The material of the rolling ball may be metal or nonmetal, and the invention is not limited. The connection mode of the rolling ball and one of the strip-shaped limiting groove and the elliptic track which is movably arranged can be elastic connection or rigid connection, and the connection mode is determined according to actual use requirements, so that the invention is not limited. In addition, considering that the differential electromagnetic vibration energy collecting device can be used independently in practical use, and can also be integrated into a device thereof for combined use, the length relationship between the strip-shaped limiting groove and the elliptical track is not limited, as long as the requirement that when one of the strip-shaped limiting groove and the elliptical track is fixed, the other can rotate around the central axis of the annular chute freely under the driving of the rolling balls is met.
In a preferred embodiment: when the coil and the magnet are at the maximum relative distance, the magnet is at least partially positioned outside the coil, the coil and the magnet are not separated from the strip-shaped limiting groove, and when the coil and the magnet are at the minimum relative distance, the magnet is at least partially positioned inside the coil. So set up for the coil can cut the magnetic induction line at the removal in-process, has guaranteed electromagnetic conversion efficiency.
Furthermore, the annular sliding groove comprises an inner ring side wall, a bottom wall and an outer ring side wall, the strip-shaped limiting groove is located in an area surrounded by the inner ring side wall, and the length of the strip-shaped limiting groove is not larger than the inner ring diameter of the annular sliding groove.
Further, the elliptical track is arranged on the inner ring side wall or the outer ring side wall of the annular chute, or the elliptical track is arranged on the bottom plate outside the outer ring side wall of the annular chute. The oval track is connected to the annular sliding groove or the bottom plate through a connecting end. When the elliptical orbit is fixedly arranged, the connecting end is arranged to be a fixed connecting end, and when the elliptical orbit is movably arranged, the connecting end is arranged to be a movable connecting end. It is worth mentioning that the elliptical orbit has other conceivable connection locations when the differential electromagnetic vibration energy harvesting device is integrated into other devices for use.
In a preferred embodiment: the bar-shaped limiting groove is movably arranged, the elliptical track is fixedly arranged, and when the rolling ball rolls in the annular sliding groove, the bar-shaped limiting groove is driven to rotate around the central shaft of the annular sliding groove. According to the design scheme, the bar-shaped limiting groove is movably arranged relative to the bottom plate, the elliptical track is fixed, the rolling ball is connected with the bar-shaped limiting groove, when the rolling ball rolls in the annular sliding groove, the bar-shaped limiting groove is driven to rotate around the central shaft of the annular sliding groove, so that the coil and the magnet in the bar-shaped limiting groove slide along the elliptical track while rotating along with the bar-shaped limiting groove, namely the coil and the magnet move towards/away from the center of the bar-shaped limiting groove simultaneously, and differential collection of multi-directional vibration micro energy is realized.
Furthermore, the strip-shaped limiting groove is connected with the bottom plate shaft, and the connecting shaft is overlapped with the central shaft of the elliptical orbit. Because the rolling ball is connected with the strip-shaped limiting groove, when the rolling ball induces the multi-directional vibration of the bottom plate and rolls in the annular sliding groove, the rolling ball drives the strip-shaped limiting groove to rotate around the connecting shaft, so that the relative position of the strip-shaped limiting groove and the elliptical orbit is changed.
Furthermore, a first annular groove is formed in the side wall of the inner ring/the outer ring of the annular sliding groove, or a first annular groove concentrically arranged with the annular sliding groove is formed in the bottom plate, and a first connecting piece is arranged on the strip-shaped limiting groove and movably connected in the first annular groove. Specifically, bar spacing groove both ends are equipped with first connecting piece respectively, the outside circumference of ring channel lateral wall is equipped with first ring channel in the annular chute, and first connecting piece activity sets up in first ring channel, and first connecting piece can be slider, rolling member etc. thereby makes the bar spacing groove is in can wind under the drive of spin the center pin of annular chute rotates, and can not influence the spin is in roll in the annular chute. Or, the diapire outside of bar spacing groove is equipped with first connecting piece, the top circumference of annular spout inner ring outer loop lateral wall is equipped with first ring channel, or the bottom plate be equipped with the concentric first ring channel that sets up of annular spout, first connecting piece setting in first ring channel, first connecting piece can be slider, rolling member etc. thereby make the bar spacing groove is in can wind under the drive of spin the center pin of annular spout rotates, and can not influence the spin is in roll in the annular spout. The strip-shaped limiting groove is movably connected to the annular sliding groove or the bottom plate, and rotates around the central shaft of the annular sliding groove under the driving of the rolling ball, so that the rolling arrangement mode of the rolling ball in the annular sliding groove is not influenced, and the arrangement mode comprises but is not limited to the connection mode listed above.
In a preferred embodiment: the ball is connected to one of the coil and the magnet. The rolling ball is connected with one of the coil and the magnet, when the rolling ball rolls in the annular sliding groove, traction force is applied to the coil/the magnet connected with the rolling ball, so that the movably arranged strip-shaped limiting groove rotates around the central shaft of the elliptical track, the elliptical track is fixedly arranged, and the relative position of the strip-shaped limiting groove and the elliptical track is changed.
In a preferred embodiment: the bar-shaped limiting groove is fixedly arranged, the elliptical track is movably arranged, and when the rolling ball rolls in the annular sliding groove, the elliptical track is driven to rotate around the central shaft of the annular sliding groove. According to the design scheme, when the rolling ball rolls in the annular sliding groove, the elliptical track connected with the rolling ball is driven to rotate around the central shaft of the annular sliding groove, the strip-shaped limiting groove is fixed, and the relative position of the strip-shaped limiting groove and the elliptical track changes, so that the coil and the magnet in the strip-shaped limiting groove can move towards/away from the center of the strip-shaped limiting groove at the same time, and the differential collection of multi-directional vibration micro energy is realized.
Further, a second annular groove is formed in the top or the outer side of the side wall of the inner ring/the side wall of the outer ring of the annular sliding groove, or a second annular groove concentric with the annular sliding groove is formed in the bottom plate, a second connecting piece is arranged on the oval track, and the second connecting piece is movably connected in the second annular groove. Specifically, the elliptical orbit is connected in the second annular groove through two or four second connecting pieces, the two or four second connecting pieces are arranged in a centrosymmetric manner with the center of the elliptical orbit, and the second connecting pieces can be sliding pieces or rolling pieces. The connection position of the oval orbit is various, including but not limited to the above-mentioned connection mode.
Compared with the prior art, the invention has the following advantages and beneficial effects:
the energy conversion device has the advantages that the annular sliding groove and the rolling ball are arranged on the bottom plate, multi-directional vibration in a plane is converted into rolling of the rolling ball in the annular sliding groove, the rolling of the rolling ball in the annular sliding groove is converted into change of relative positions of the strip-shaped limiting groove and the elliptical rail through arrangement of the strip-shaped limiting groove and the elliptical rail, accordingly, the energy conversion device arranged in the strip-shaped limiting groove converts vibration energy into electric energy, the structure of the energy conversion device is ingenious, and the design is simple.
The invention has the advantages that the coil and the magnet are arranged in the strip-shaped limiting groove, the movable ends of the coil and the magnet are connected to the elliptical track in a sliding mode, when the relative position of the strip-shaped limiting groove and the elliptical track is changed under the driving of the rolling ball, the coil and the magnet move towards/away from the central position of the strip-shaped limiting groove, and therefore differential conversion of multi-direction vibration micro-energy is achieved.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic view of the differential electromagnetic vibration energy harvesting device provided in embodiment 1 when the magnet and the coil are at the maximum relative distance;
fig. 2 is a schematic view of the differential electromagnetic vibration energy harvesting device provided in embodiment 1 when the magnet and the coil are at a minimum relative distance;
FIG. 3 is a schematic view of the differential electromagnetic vibration energy harvesting device provided in embodiment 2 when the magnet and the coil are at the maximum relative distance;
FIG. 4 is a schematic view of the differential electromagnetic vibration energy harvesting device provided in embodiment 2 when the magnet and the coil are at a minimum relative distance;
FIG. 5 is a schematic view of the differential electromagnetic vibration energy harvesting device provided in embodiment 3 when the magnet and the coil are at the maximum relative distance;
FIG. 6 is a schematic view of the differential electromagnetic vibration energy harvesting device provided in embodiment 3 with the magnets and the coils at a minimum relative distance;
reference numerals are as follows: 1-bottom plate, 2-annular chute, 21-inner ring side wall, 22-bottom wall, 23-outer ring side wall, 3-bar limiting groove, 4-elliptical track, 5-coil, 6-magnet and 7-rolling ball.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
Example 1
With reference to fig. 1-2, the invention provides a differential electromagnetic vibration energy collecting device, which comprises a bottom plate 1, an annular chute 2 fixedly arranged on the upper surface of the bottom plate 1, a strip-shaped limiting groove 3 movably arranged on the upper surface of the bottom plate 1, an elliptical track 4 fixedly arranged above the bottom plate 1 and having a central axis coinciding with that of the annular chute 2, an electromagnetic energy conversion device movably arranged in the strip-shaped limiting groove 3, and a rolling ball 7 movably arranged in the annular chute 2. The annular sliding groove 2 comprises an inner ring side wall 21, a bottom wall 22 and an outer ring side wall 23, the strip-shaped limiting groove 3 is located in an area surrounded by the inner ring side wall 21, the length of the strip-shaped limiting groove 3 is not larger than the inner ring diameter of the annular sliding groove 2, the strip-shaped limiting groove 3 is connected with the bottom plate 1 through a shaft, and the connecting shaft is overlapped with the central shaft of the annular sliding groove 2; the electromagnetic energy conversion device comprises a coil 5 and a magnet 6 which are respectively arranged at two ends of the bar-shaped limiting groove 3, one end of the coil 5 and one end of the magnet 6 are respectively movably connected with the bar-shaped limiting groove 3 and the elliptical track 4 through a guide part, the other end of the coil 5 and the other end of the magnet 6 are free ends, the coil 5 is opposite to the free end of the magnet 6, and the length of the coil 5/the magnet 6 is smaller than the length of the short shaft of the elliptical track 4; the oval track 4 is fixedly arranged with the inner ring side wall 21 of the annular sliding groove 2 through two ends of the long shaft of the oval track, and the rolling ball 7 is connected with one end of the strip-shaped limiting groove 3.
When the vibration acquisition device is used, the lower surface of the bottom plate 1 is arranged on a vibration source, when the bottom plate 1 is subjected to multi-direction vibration, the rolling ball 7 rolls in the annular sliding groove 2, so that the strip-shaped limiting groove 3 is driven to rotate around the central shaft of the annular sliding groove 2, the coil 5 and the magnet 6 in the strip-shaped limiting groove 3 slide along the elliptical track 4 while rotating along with the strip-shaped limiting groove 3, namely the coil 5 and the magnet 6 move towards/away from the center of the strip-shaped limiting groove 3 simultaneously, compared with the structure in the prior art, only one of the magnet 6 or the coil 5 is fixed, and the other of the magnet and the coil 5 moves relatively, the speed of cutting a magnetic induction line by the coil 5 is doubled, and differential acquisition of multi-direction vibration micro energy is realized.
Example 2
With reference to fig. 3 to 4, the structure of the present embodiment is substantially similar to that of embodiment 1, except that two ends of the strip-shaped limiting groove 3 are respectively provided with a first connecting piece, a first annular groove is circumferentially arranged on an outer side of the inner ring side wall 21 of the annular chute 2, the first connecting piece is movably arranged in the first annular groove, and the first connecting piece is a sliding connecting piece; the ball 7 is connected to the sliding connection end of the coil 5.
When the vibration-proof bottom plate is used, the lower surface of the bottom plate 1 is placed on a vibration source, when the bottom plate 1 is vibrated in multiple directions, the rolling balls 7 roll in the annular sliding grooves 2, the coil 5 is subjected to a traction force, the coil 5 transmits the traction force to the strip-shaped limiting grooves 3 where the coil 5 is located, so that the connecting pieces of the strip-shaped limiting grooves 3 slide in the first annular grooves, the coil 5 and the magnet 6 in the strip-shaped limiting grooves 3 slide along the elliptical track 4 while rotating along with the strip-shaped limiting grooves 3, namely, the coil 5 and the magnet 6 move towards/away from the centers of the strip-shaped limiting grooves 3 simultaneously, compared with the structure that only one of the magnet 6 or the coil 5 is fixed and the other moves relatively in the prior art, the speed of cutting a magnetic induction line by the coil 5 is doubled in the vibration-proof bottom plate, and differential collection of multi-directional vibration micro-energy is realized.
Example 3
As shown in fig. 5 to 6, the structure of this embodiment is substantially similar to that of embodiment 1, except that the strip-shaped limiting groove 3 is fixedly disposed on the bottom plate 1, the elliptical track 4 is movably disposed above the bottom plate 1, the rolling ball 7 is connected to one end of the elliptical track 4, a second annular groove is disposed at the top of the inner ring side wall 21 of the annular chute 2, two second connecting members are disposed at the bottom of the elliptical track 4, the second connecting members are movably connected to the second annular groove, and the second connecting members are rolling connecting members.
During the use, will the lower surface of bottom plate 1 is arranged in on the vibration source, and when bottom plate 1 received multi-direction vibration, spin 7 can take place to roll in the annular spout 2 to drive oval track 4 winds the center pin of annular spout 2 rotates, makes the relative position of bar spacing groove 3 with oval track 4 changes, is located coil 5 and magnet 6 in the bar spacing groove 3 move towards/deviate from bar spacing groove 3 central point simultaneously immediately, realizes the differential collection of vibration micro energy.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A differential electromagnetic vibration energy harvesting device, comprising:
the upper surface of the bottom plate is provided with an annular sliding groove, a strip-shaped limiting groove and an elliptical track, the annular sliding groove is fixedly arranged on the bottom plate, one of the strip-shaped limiting groove and the elliptical track is fixedly arranged, the other one of the strip-shaped limiting groove and the elliptical track is movably arranged, the strip-shaped limiting groove is vertically intersected with the central axis of the annular sliding groove, and the central axis of the elliptical track is superposed with the central axis of the annular sliding groove;
The electromagnetic energy conversion device comprises a coil and a magnet which are arranged in the bar-shaped limiting groove and can move along the length direction of the bar-shaped limiting groove, wherein the coil and the magnet are respectively positioned at two ends of the bar-shaped limiting groove, one end of the coil and one end of the magnet are connecting ends which can be movably connected to the elliptical orbit, the other end of the coil and the other end of the magnet are free ends, the coil is opposite to the free ends of the magnet, and the length of the coil/the magnet is smaller than that of the short axis of the elliptical orbit;
the rolling ball is positioned in the annular sliding chute and is connected with one of the strip-shaped limiting groove and the elliptic track which is movably arranged;
when the bottom plate is vibrated in multiple directions, the rolling ball rolls in the annular sliding groove to drive one of the strip-shaped limiting groove and the oval track movably arranged to rotate, so that the coil and the magnet move towards/away from the center of the strip-shaped limiting groove at the same time to generate electric energy.
2. The differential electromagnetic vibration energy harvester of claim 1, wherein the magnet is at least partially outside the coil when the coil and the magnet are at the maximum relative distance and the coil and the magnet are not separated from the bar-shaped restraining groove, and wherein the magnet is at least partially inside the coil when the coil and the magnet are at the minimum relative distance.
3. The differential electromagnetic vibration energy harvesting device of claim 2 wherein the annular chute comprises an inner annular sidewall, a bottom wall and an outer annular sidewall, the elongated limiting slot is located within the area enclosed by the inner annular sidewall, and the length of the elongated limiting slot is not greater than the inner annular diameter of the annular chute.
4. The differential electromagnetic vibration energy harvester of claim 3 wherein the elliptical orbit is disposed on an inner or outer annular sidewall of the annular chute or the elliptical orbit is disposed on the base plate outside of the outer annular sidewall of the annular chute.
5. The differential electromagnetic vibration energy collection device of claim 4 wherein the bar-shaped limiting grooves are movably disposed and the elliptical orbit is fixedly disposed, such that when the rolling ball rolls in the annular sliding groove, the bar-shaped limiting grooves are driven to rotate around the central axis of the annular sliding groove.
6. The differential electromagnetic vibration energy harvesting device of claim 5 wherein the bar-shaped limiting groove is connected with the bottom plate shaft, and the connecting shaft is coincident with the central axis of the annular chute.
7. The differential electromagnetic vibration energy harvesting device of claim 5 wherein the inner ring/outer ring side wall of the annular chute is provided with a first annular groove, or the bottom plate is provided with a first annular groove concentric with the annular chute, and the bar-shaped limiting groove is provided with a first connecting piece movably connected in the first annular groove.
8. The differential electromagnetic vibration energy harvester of claim 5 and further comprising: the ball is connected to one of the coil and the magnet.
9. The differential electromagnetic vibration energy harvesting device of claim 4 wherein the bar-shaped limiting grooves are fixedly arranged and the elliptical track is movably arranged to rotate around a central axis of the annular chute when the rolling ball rolls in the annular chute.
10. The differential electromagnetic vibration energy harvester of claim 9 wherein the bottom plate has a second annular groove concentric with the annular channel, and the elliptical track has a second connecting member movably connected in the second annular groove.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210246831.1A CN114520578B (en) | 2022-03-14 | 2022-03-14 | Differential electromagnetic vibration energy acquisition device |
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| CN202210246831.1A CN114520578B (en) | 2022-03-14 | 2022-03-14 | Differential electromagnetic vibration energy acquisition device |
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| CN113746375A (en) * | 2021-09-09 | 2021-12-03 | 中国计量大学 | Up-conversion rolling ball actuated piezoelectric-electromagnetic wave vibration energy harvesting device |
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2022
- 2022-03-14 CN CN202210246831.1A patent/CN114520578B/en active Active
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| US20110187207A1 (en) * | 2008-02-01 | 2011-08-04 | University Of Florida Research Foundation, Inc. | Method and apparatus for motional/vibrational energy harvesting via electromagnetic induction |
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| US20110309691A1 (en) * | 2010-06-16 | 2011-12-22 | Samsung Electro-Mechanics Co., Ltd. | Linear vibrator and electronic device having the same |
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