CN209948994U - Cable energy collecting device - Google Patents
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- CN209948994U CN209948994U CN201921252470.1U CN201921252470U CN209948994U CN 209948994 U CN209948994 U CN 209948994U CN 201921252470 U CN201921252470 U CN 201921252470U CN 209948994 U CN209948994 U CN 209948994U
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Abstract
The utility model discloses a cable energy collecting device, including being used for with the fixed installation shell of cable, be equipped with in the installation shell: the piezoelectric element generates voltage at two ends when being pressed, the fixed end of the piezoelectric element is fixed with the mounting shell, the free end of the piezoelectric element is provided with a permanent magnet, and the permanent magnet is used for oscillating in an alternating magnetic field formed by a cable so as to drive the free end of the piezoelectric element to swing by taking the fixed end as a fixed point to generate voltage; a group of micro coils oppositely arranged along two ends of the inner wall of the mounting shell, wherein a permanent magnet is arranged between the oppositely arranged micro coils, and the permanent magnet reciprocates between the micro coils when oscillating in an alternating magnetic field formed by a cable so as to change the magnetic flux of the micro coils to output voltage; the energy collecting device is respectively connected with the piezoelectric element and the micro coil to respectively collect the energy of the piezoelectric element and the micro coil. Compared with air flow and illumination intensity, the alternating magnetic field formed by the cable is stable and is not influenced by the environment, and energy collection can be continuously carried out for a long time so as to supply power to the sensor in the power grid.
Description
Technical Field
The utility model relates to a cable energy collection technical field, more specifically say, relate to a cable energy collection device.
Background
In recent years, the development and demand of power grid digitization greatly promotes the research, development, popularization and application of intelligent power monitoring equipment. As a sensor for collecting basic data of a power grid, power supply of the sensor is always a difficult problem in application. The use of conventional wired power would greatly limit the range of applications for the sensor due to safety and insulation issues. And the frequency of information acquisition and the service life of the sensor are limited by adopting a battery for power supply. Therefore, in order to realize the miniaturized and bonded wide power grid data acquisition, research and application of an energy collection technology under the application scene of a sensor in a power grid increasingly become a research hotspot. The device is combined with the application scene of the sensor in the power grid, generally collects weak energy of illumination and air flow, but the limited degree of the energy collection is large, the requirements on the illumination and the air flow are high, the structure of the device is correspondingly complex, and the device cannot continuously supply power for the sensor.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a cable energy collecting device to receive environmental impact many, can't continuously carry out energy collection scheduling problem when solving current energy collection such as illumination, air current.
In order to achieve the above object, the utility model provides a following technical scheme:
a cable energy harvesting device, includes the installation shell that is used for with the cable is fixed, be equipped with in the installation shell:
the piezoelectric element generates voltage at two ends when being pressed, the fixed end of the piezoelectric element is fixed with the mounting shell, and the free end of the piezoelectric element is provided with a permanent magnet which is used for oscillating in an alternating magnetic field formed by a cable so as to drive the free end of the piezoelectric element to swing by taking the fixed end as a fixed point to generate voltage;
the permanent magnet reciprocates between the micro coils when oscillating in an alternating magnetic field formed by a cable, so that the magnetic flux of the micro coils changes to output alternating voltage;
the energy collecting device is used for rectifying, collecting and outputting energy, and is respectively connected with the piezoelectric element and the micro coil so as to respectively collect the energy of the piezoelectric element and the micro coil.
Preferably, a buffer layer is arranged in the mounting shell and used for oppositely arranging two ends of the permanent magnet in the oscillation direction, and the buffer layer comprises a flexible damping piece for damping.
Preferably, a fixing beam for fixing the piezoelectric element is further arranged in the mounting shell, the piezoelectric element is detachably and fixedly connected with the fixing beam, an elastic matrix for coating and reinforcing the surface of the piezoelectric element is arranged on the fixing beam, and the free end of the piezoelectric element is fixed with the permanent magnet through the elastic matrix so as to generate voltage under stress when the elastic matrix is elastically deformed.
Preferably, the number of the piezoelectric elements is at least two, and the at least two piezoelectric elements are uniformly arranged on the fixed beam.
Preferably, the piezoelectric element is perpendicular to extension lines of two poles of the permanent magnet, and the extension lines of two poles of the permanent magnet are perpendicular to the micro coil respectively.
Preferably, the outer part of the installation shell is provided with a hoop/bandage for fixing with the cable, and the installation shell is arranged along the length direction of the cable.
Preferably, the energy harvesting device comprises:
the first rectifier bridge is connected with the piezoelectric element for rectification;
the second rectifier bridge is used for being connected with the micro coil to perform rectification;
the energy collecting module is connected with a voltage output module connected with a load;
and the energy storage module is connected with the energy collection module and used for storing power.
Preferably, the number of the voltage output modules is at least two, so as to realize at least two paths of voltage output.
Preferably, when the cable is a unidirectional cable, the extension line of the two polar directions of the permanent magnet is parallel to the tangential direction of the alternating magnetic field generated by the cable.
Preferably, when the cable is a bidirectional cable comprising a live wire and a zero wire, the extension line of the two polar directions of the permanent magnet is coplanar with the excircle tangent plane of the live wire and the zero wire.
The utility model provides a cable energy collecting device, including being used for with the fixed installation shell of cable, be equipped with in the installation shell: the piezoelectric element generates voltage at two ends when being pressed, the fixed end of the piezoelectric element is fixed with the mounting shell, the free end of the piezoelectric element is provided with a permanent magnet, and the permanent magnet is used for oscillating in an alternating magnetic field formed by a cable so as to drive the free end of the piezoelectric element to swing by taking the fixed end as a fixed point to generate voltage; a group of micro coils oppositely arranged along two ends of the inner wall of the mounting shell, wherein a permanent magnet is arranged between the oppositely arranged micro coils, and the permanent magnet reciprocates between the micro coils when oscillating in an alternating magnetic field formed by a cable so as to change the magnetic flux of the micro coils to output voltage; the energy collecting device is used for rectifying, collecting and outputting energy and is respectively connected with the piezoelectric element and the micro coil so as to respectively collect the energy of the piezoelectric element and the micro coil.
Use the utility model provides a cable energy collecting device, the permanent magnet vibrates in the alternating magnetic field that the cable formed, the stiff end and the installation shell of piezoelectric component are fixed, the free end is fixed with the permanent magnet, vibration through the permanent magnet drives piezoelectric component and takes place deformation, and then produce voltage at the both ends of piezoelectric component, and set up a set of micro coil relatively at the inner wall both ends of installation shell, when the permanent magnet vibrates in the alternating magnetic field that the cable formed, reciprocating motion between micro coil, make micro coil's magnetic flux change output alternating voltage, energy collecting device is connected with piezoelectric component and micro coil respectively, carry out the rectification to the two and collect and realize voltage output. Compared with air flow and illumination intensity, the alternating magnetic field formed by the cable is stable and is not influenced by the environment, and energy collection can be continuously carried out for a long time so as to supply power to the sensor in the power grid.
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 these drawings without creative efforts.
Fig. 1 is a schematic front view of a cable energy collecting device according to an embodiment of the present invention;
FIG. 2 is a schematic top view of the structure of FIG. 1;
FIG. 3 is a side view of the structure of FIG. 1;
fig. 4 is a schematic view illustrating an installation of a permanent magnet according to another embodiment of the present invention;
fig. 5 is a schematic structural diagram of an energy collecting device according to an embodiment of the present invention.
The drawings are numbered as follows:
the device comprises a cable 1, a hoop 2, an installation shell 3, an energy collecting device 4, a fixed beam 5, a piezoelectric element 6, an elastic matrix 7, a permanent magnet 8, a micro coil 9 and a buffer layer 10;
a first rectifier bridge 41, a second rectifier bridge 42, an energy storage module 43, and an energy collection module 44;
a low power consumption energy collection module 441, a storage energy management module 442, and a voltage conversion module 443.
Detailed Description
The embodiment of the utility model discloses cable energy collection device to it is many, can't continuously carry out the energy collection scheduling problem to receive environmental impact when solving current energy collection such as illumination, air flow.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 to 5, fig. 1 is a schematic front view of a cable energy collecting device according to an embodiment of the present invention; FIG. 2 is a schematic top view of the structure of FIG. 1; FIG. 3 is a side view of the structure of FIG. 1; fig. 4 is a schematic view illustrating an installation of a permanent magnet according to another embodiment of the present invention; fig. 5 is a schematic structural diagram of an energy collecting device according to an embodiment of the present invention.
In a specific embodiment, the utility model provides a cable energy collecting device 4, including being used for the installation shell 3 fixed with cable 1, be equipped with in the installation shell 3: the piezoelectric element 6 is connected with the energy collecting device 4, and generates voltage at two ends when being pressed, the fixed end of the piezoelectric element 6 is fixed with the mounting shell 3, the free end of the piezoelectric element 6 is provided with a permanent magnet 8, and the permanent magnet 8 is used for oscillating in an alternating magnetic field formed by the cable 1 so as to drive the free end of the piezoelectric element 6 to swing by taking the fixed end as a fixed point to generate voltage; and the energy collecting device 4 is used for rectifying, collecting and outputting the energy.
Wherein the mounting shell 3 is preferably arranged in the length direction of the cable 1, thereby optimizing the spatial structure. Installation shell 3 is fixed with cable 1, generally is detachable fixed connection, if fix through staple bolt 2, staple bolt 2's one end and installation shell 3's bottom fixed connection, the other end encircles cable 1 and realizes fixing. The number of the hoops 2 can be set according to the length of the installation shell 3, and preferably, the hoops 2 are respectively arranged at two ends of the installation shell 3, so that the installation shell 3 is fixed on the cable 1. In other embodiments, the fixing can also be realized by a ribbon, which is all within the protection scope of the present invention.
The piezoelectric element 6 is a piezoelectric element that generates a voltage across when compressed, and in one embodiment, may be embodied as PZT piezoelectric ceramic (lead zirconate titanate), where P is an abbreviation for lead element Pb, Z is an abbreviation for zirconium element Zr, and T is an abbreviation for titanium element Ti, having positive piezoelectric effect and negative piezoelectric effect. The piezoelectric material of the piezoelectric element 6 can be selected according to actual needs, and will not be described in detail herein.
One end of the piezoelectric element 6 is fixed with the mounting shell 3 to form a fixed end, and the fixed end can be directly fixed through a thread piece or bonding and other forms, and can also be indirectly fixed through an indirect piece such as a rod or a pile. The free end of the piezoelectric element 6 is provided with a permanent magnet 8, and similarly, the free end and the permanent magnet 8 may be directly fixed by bonding or the like, or may be indirectly fixed. Permanent magnet 8 oscillates in the alternating magnetic field that cable 1 formed, if when cable 1 was one-way cable 1 and lead to alternating current, 8 permanent magnet's two poles of the earth extension line and cable 1 produced alternating magnetic field's tangential direction parallel arrangement, when alternating magnetic field direction changed, 8 permanent magnet's two poles of the earth reciprocating motion in alternating magnetic field according to the principle of "homopolar repulsion, heteropolar attraction", and then drive and 8 permanent magnet connection piezoelectric element 6 uses the stiff end as the fixed point, reciprocal swing for piezoelectric element 6 takes place deformation and produces alternating voltage.
The energy harvesting device 4 generally comprises a rectifying module, an energy storage module 43 and an energy harvesting and management chip. Energy harvesting and management chips such as S-882Z, LTC1540, LTC1474C, LTC3588, E-821.00 modules, etc., may be selected according to actual needs and are only one preferred embodiment herein.
Simultaneously, still be equipped with in the installation shell 3:
a group of micro coils 9 oppositely arranged along two ends of the inner wall of the cable, a permanent magnet 8 is arranged between the oppositely arranged micro coils 9, and the permanent magnet 8 reciprocates between the micro coils 9 when oscillating in an alternating magnetic field formed by the cable 1, so that the magnetic flux of the micro coils 9 changes to output voltage; the energy harvesting device 4 is connected to the micro-coil 9 to harvest its energy.
The micro coils 9 are arranged opposite to two poles of the permanent magnet 8 respectively, so that the permanent magnet 8 can oscillate in the alternating magnetic field and can reciprocate between the two oppositely arranged micro coils 9, the magnetic flux of the micro coils 9 can be changed, the micro coils 9 can output alternating voltage according to the electromagnetic induction law, and the collection of the electromagnetic energy of the cable 1 can be realized. The micro-coil 9 is a thin sheet coil, and can be made by winding thin copper wires with a radius smaller than 0.1mm, for example, by multiple layers arranged in rows and arranged in an inner and outer surrounding manner, or in an embodiment, by printing on a PCB, the thickness and width of the coil can be selected according to the actual impedance requirement.
The micro-coil 9 is preferably arranged on the inner wall of the mounting housing 3 and can be fixed by bonding or other means, and the permanent magnet 8 is arranged perpendicular to the plane of the micro-coil 9. It will be appreciated that the energy harvesting device 4 is connected to the micro-coil 9 for harvesting energy, and may be connected to the energy harvesting device 4 by an electrically conductive wire.
The device realizes energy collection through independent operation of two power generation modes, namely the piezoelectric element 6, the permanent magnet 8 and the micro coil 9.
Use the utility model provides a cable energy collecting device, 8 oscillations of permanent magnet in the alternating magnetic field that the cable formed, the stiff end and the installation shell 3 of piezoelectric component 6 are fixed, the free end is fixed with permanent magnet 8, it takes place deformation to drive piezoelectric component 6 through 8 oscillations of permanent magnet, and then produce voltage at piezoelectric component 6's both ends, and set up a set of miniature coil 9 at the inner wall both ends of installation shell 3 relatively, when 8 oscillations in the alternating magnetic field that the cable formed of permanent magnet, reciprocating motion between miniature coil 9, make miniature coil 9's magnetic flux change output alternating voltage, energy collecting device is connected with piezoelectric component 6 and miniature coil 9 respectively, carry out the rectification to the two and collect and realize voltage output. The magnetic energy of the alternating magnetic field formed by the cable 1 is converted into the kinetic energy of the permanent magnet 8, the piezoelectric element 6 is further driven to convert the kinetic energy into the electric energy to be output, the magnetic flux of the electrified coil in the changing magnetic field changes to output the alternating voltage, and compared with the air flow and the illumination intensity, the alternating magnetic field formed by the cable 1 is stable and is not influenced by the environment, and the energy collection can be continuously carried out for a long time to supply power for the sensor in the power grid.
Specifically, the installation shell 3 is further internally provided with a buffer layer 10 which is used for being oppositely arranged at two ends along the oscillation direction of the permanent magnet 8, and the buffer layer 10 comprises a flexible damping piece for damping.
Wherein, set up flexible damper and avoid permanent magnet 8 to hit the inner wall and cause the damage under transportation or other circumstances. The flexible shock absorbing members may be specifically cushions or other flexible materials, and each layer of the buffer layer 10 may include a plurality of flexible shock absorbing members, which may be arranged according to actual needs.
Furthermore, still be equipped with the fixed beam 5 that is used for fixed piezoelectric element 6 in the installation shell 3, piezoelectric element 6 and fixed beam 5 detachable fixed connection are equipped with on the fixed beam 5 and are used for carrying out the reinforced elastic matrix 7 of cladding to piezoelectric element 6's surface, and the free end of piezoelectric element 6 is fixed with permanent magnet 8 through elastic matrix 7 to atress produces voltage when elastic matrix 7 takes place elastic deformation. Both ends of fixed beam 5 can be fixed with the inner wall of installation shell 3, preferably set up along vertical direction, and fixed beam 5 accessible other modes replace, such as dead lever or fixed plate etc. piezoelectric element 6 realizes the rigidity in installation shell 3 through fixed beam 5, and fixed beam 5's concrete form does not do the restriction, and fixed beam 5 realizes fixedly with piezoelectric element 6 accessible screw. Be provided with elastic matrix 7 on fixed beam 5, elastic matrix 7 wraps piezoelectric element 6's surface, and the preferred face of buckling along piezoelectric element 6 that wraps, permanent magnet 8 is fixed through elastic matrix 7 and piezoelectric element 6's free end promptly, takes place elastic deformation for the fixed point through elastic matrix 7 with fixed beam 5, and indirect drive cladding piezoelectric element 6 in elastic matrix 7 realizes buckling, also is convenient for piezoelectric element 6 and permanent magnet 8's fixed when consolidating piezoelectric element 6.
The number of the piezoelectric elements 6 is at least two, and the at least two piezoelectric elements 6 are uniformly arranged on the fixed beam 5. At least two here include two and more, piezoelectric element 6 can be set up at the length direction of fixed beam 5, and the free end of every piezoelectric element 6 is equallyd divide and is equipped with permanent magnet 8 respectively, or in an embodiment, a plurality of piezoelectric element 6's free end only connects a permanent magnet 8, all is in the utility model discloses a protection scope.
When the cable is used, the permanent magnet 8 oscillates in an alternating magnetic field formed by the cable 1, and meanwhile, the elastic matrix 7 is driven to elastically deform by taking the mounting point of the fixed beam 5 as a fixed point, so that force is applied to the piezoelectric element 6 arranged in the elastic matrix 7, and charges are generated at two ends of the piezoelectric element 6. In other embodiments, the elastic base 7 may be disposed at the free end of the piezoelectric element 6 and fixed by welding or the like, so as to facilitate the installation of the permanent magnet 8, but such an arrangement generally has a reinforcing effect on the piezoelectric element 6, and may be set according to actual needs in actual applications.
Specifically, the extension lines of the two poles of the piezoelectric element 6 and the permanent magnet 8 are perpendicular to each other, and the extension lines of the two poles of the permanent magnet 8 are perpendicular to the micro coil 9 respectively. It can be understood that, set up the example with two poles of earth of permanent magnet 8 along the horizontal direction, piezoelectric element 6 is vertical setting in installation shell 3, and permanent magnet 8 swings in the horizontal plane, and piezoelectric element 6 swings in the vertical plane under the drive of permanent magnet 8, and is corresponding, and micro-coil 9 sets up perpendicularly with the extension line of two poles of earth place of permanent magnet 8, sets up along the vertical plane promptly, and this place is only a preferred embodiment, and in other embodiments, need carry out corresponding setting according to the alternating magnetic field of cable 1 and the position that sets up of permanent magnet 8.
In one embodiment, the exterior of the mounting shell 3 is provided with a hoop 2/tie for fixing with the cable 1, and the mounting shell 3 is arranged along the length direction of the cable 1. From this setting to optimize the installation space of cable 1, the outside of installation shell 3 is provided with staple bolt 2 or ribbon, staple bolt 2 or ribbon and installation shell 3 fixed connection, fixed connection's mode accessible bonding or detachable fixed connection. Explaining by taking the staple bolt 2 as an example, the installation shell 3 is provided with two staple bolts 2 along length direction's both ends, and staple bolt 2 is fixed with cable 1 respectively, and the number of staple bolt 2 can set up according to the length of installation shell 3, all is in the utility model discloses a protection scope. In other embodiments, other types of fixing members can be selected according to requirements to fix the mounting shell 3 and the cable 1.
As shown in fig. 5, fig. 5 is a schematic structural diagram of an energy collecting device according to an embodiment of the present invention. In one embodiment, the energy harvesting device 4 comprises:
a first rectifying bridge 41 for rectifying by connecting with the piezoelectric element 6;
a second rectifier bridge 42 for connecting with the micro-coil 9 for rectification;
the energy collecting module 44 is used for being connected with the first rectifier bridge 41 and the second rectifier bridge 42 respectively, and the energy collecting module 44 is connected with a voltage output module connected with a load;
and the energy storage module 43 is connected with the energy collection module 44 and used for power storage.
The energy harvesting module 44 may be embodied as an energy harvesting and management chip such as an S-882Z converter, an LTC1540 linear comparator, an LTC1474C linear comparator, an LTC3588 linear comparator, and the like. The energy storage module 43 may be embodied as a battery or a super capacitor. The energy collection module 44 includes a low power consumption energy collection module 441, an energy storage management module 442, and a voltage conversion module 443. In this embodiment, the piezoelectric element 6 and the micro-coil 9 are respectively rectified by the first rectifying bridge 41 and the second rectifying bridge 42, and in other embodiments, when the cable energy collecting device 4 is separately provided with the piezoelectric element 6 and the micro-coil 9 for energy collection, the energy collecting device 4 only needs to be provided with the corresponding rectifying bridges accordingly. In use, the first rectifier bridge 41 rectifies the energy of the piezoelectric element 6, processes the energy through the energy collecting module 44, and stores the energy through the energy storage module 43 or outputs the voltage through the voltage output module. When the number of the piezoelectric elements 6 is at least two, each piezoelectric element 6 is connected to the first rectifying bridge 41, so as to achieve rectification. Preferably, the number of the voltage output modules is at least two, so as to realize at least two paths of voltage output. The voltage output module can support independent setting of multi-path voltage output, can also be used for 1-path output, and can be set as required.
As shown in fig. 1 to 3, in each of the above embodiments, when the cable 1 is a unidirectional cable 1, the extension lines of the two pole directions of the permanent magnet 8 are parallel to the tangential direction of the alternating magnetic field generated by the cable 1. Alternating current in the unidirectional cable 1 generates an alternating electromagnetic field, the mass and the magnetic force of the permanent magnet 8 are set as required, so that the permanent magnet can oscillate at the frequency of the maximum power point under the action of the alternating electromagnetic field, and the piezoelectric element 6 is driven to repeatedly extrude and move due to the oscillation of the permanent magnet 8, so that the piezoelectric element 6 generates an alternating voltage signal, and energy collection is realized. Meanwhile, because the period of the permanent magnet 8 is close to and far away from, the magnetic flux of the micro coil 9 is constantly changed, and according to the law of electromagnetic induction, the micro coil 9 also outputs an alternating voltage signal, so that the collection of electromagnetic energy around the cable 1 is realized.
As shown in fig. 4, based on the above embodiments, when the cable 1 is a bidirectional cable 1 including a live wire and a neutral wire, the extension line of the two polar directions of the permanent magnet 8 is coplanar with the outer circle tangent plane of the live wire and the neutral wire. The permanent magnet 8 is arranged between the live wire and the zero line, and because the magnetic fields of the live wire and the zero line are mixed, when the extension line of the two polar directions of the permanent magnet 8 is in the same plane with the excircle tangent plane of the live wire and the zero line, the permanent magnet 8 can vibrate according to the frequency of the maximum power point under the action of the alternating magnetic field. In other embodiments, the two polar directions of the permanent magnet 8 can be set according to actual needs, as long as the same technical effect can be achieved.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The utility model provides a cable energy collection device which characterized in that, is including being used for with the fixed installation shell of cable, be equipped with in the installation shell:
the piezoelectric element generates voltage at two ends when being pressed, the fixed end of the piezoelectric element is fixed with the mounting shell, and the free end of the piezoelectric element is provided with a permanent magnet which is used for oscillating in an alternating magnetic field formed by a cable so as to drive the free end of the piezoelectric element to swing by taking the fixed end as a fixed point to generate voltage;
the permanent magnet reciprocates between the micro coils when oscillating in an alternating magnetic field formed by a cable, so that the magnetic flux of the micro coils changes to output alternating voltage;
the energy collecting device is used for rectifying, collecting and outputting energy, and is respectively connected with the piezoelectric element and the micro coil so as to respectively collect the energy of the piezoelectric element and the micro coil.
2. The cable energy harvesting device of claim 1, further comprising a buffer layer disposed within the mounting shell for opposing ends along the direction of oscillation of the permanent magnet, the buffer layer comprising a compliant shock absorber for absorbing shock.
3. The cable energy collecting device of claim 1, wherein a fixing beam for fixing the piezoelectric element is further disposed in the mounting shell, the piezoelectric element is detachably and fixedly connected to the fixing beam, an elastic matrix for coating and reinforcing the surface of the piezoelectric element is disposed on the fixing beam, and a free end of the piezoelectric element is fixed to the permanent magnet through the elastic matrix so as to generate a voltage when the elastic matrix is elastically deformed.
4. The cable energy harvesting device of claim 3, wherein the number of the piezoelectric elements is at least two, and at least two of the piezoelectric elements are uniformly disposed on the fixed beam.
5. The cable energy harvesting device of claim 1, wherein the piezoelectric element is perpendicular to extension lines of two poles of the permanent magnet, and the extension lines of two poles of the permanent magnet are perpendicular to the micro coil respectively.
6. The cable energy harvesting device of claim 1, wherein the exterior of the mounting shell is provided with a hoop/tie for securing with the cable, the mounting shell being disposed along the length of the cable.
7. The cable energy harvesting device of claim 1, wherein the energy harvesting device comprises:
the first rectifier bridge is connected with the piezoelectric element for rectification;
the second rectifier bridge is used for being connected with the micro coil to perform rectification;
the energy collecting module is connected with a voltage output module connected with a load;
and the energy storage module is connected with the energy collection module and used for storing power.
8. The cable energy harvesting device of claim 7, wherein the number of voltage output modules is at least two to achieve at least two-way voltage output.
9. The cable energy harvesting device of any one of claims 1 to 8, wherein when the cable is a unidirectional cable, the extension line of the two polar directions of the permanent magnet is parallel to the tangential direction of the alternating magnetic field generated by the cable.
10. The cable energy harvesting device of any of claims 1-8, wherein when the cable is a two-way cable comprising a live wire and a neutral wire, the extension of the two poles of the permanent magnet is coplanar with the outer circular tangent planes of the live and neutral wires.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921252470.1U CN209948994U (en) | 2019-08-02 | 2019-08-02 | Cable energy collecting device |
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| CN201921252470.1U CN209948994U (en) | 2019-08-02 | 2019-08-02 | Cable energy collecting device |
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| CN209948994U true CN209948994U (en) | 2020-01-14 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110401326A (en) * | 2019-08-02 | 2019-11-01 | 南方电网科学研究院有限责任公司 | A kind of cable energy collecting device |
| CN114389478A (en) * | 2021-12-27 | 2022-04-22 | 国能铁路装备有限责任公司 | Railway vehicle kinetic energy acquisition device and system |
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2019
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110401326A (en) * | 2019-08-02 | 2019-11-01 | 南方电网科学研究院有限责任公司 | A kind of cable energy collecting device |
| CN114389478A (en) * | 2021-12-27 | 2022-04-22 | 国能铁路装备有限责任公司 | Railway vehicle kinetic energy acquisition device and system |
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