Energy acquisition equipment for acquiring electric energy by coupling multi-core cable current magnetic field

Abstract

The invention relates to the technical field of energy acquisition, in particular to energy acquisition equipment for acquiring electric energy by coupling a current magnetic field of a multi-core cable. An electric control turnover cable guide frame used for adapting to the layout of cables of different specifications is movably assembled in the external supporting seat through a rotating shaft; a plurality of electric control arc-shaped guide covers used for adjusting the magnetic coupling distance are movably assembled in the electric control overturning type fairlead frame at intervals in the length direction of the electric control overturning type fairlead frame. And an electric control type arc-shaped collecting cover is assembled on the arc-shaped surface of the inner side of the electric control arc-shaped guide cover along an arc-shaped track in a sliding manner. According to the energy acquisition equipment for acquiring the electric energy by coupling the multi-core cable and the multi-conductor current magnetic field, the overall structure is adjusted in an electric control mode, and the layout of the cable can be adjusted according to overturning, so that the equipment is adaptive to cable layouts of different specifications, and the adaptation degree is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of energy collection, and in particular to an energy collection device for coupling a multi-core cable current magnetic field to obtain electric energy. BACKGROUND

[0002] The law of electromagnetic induction is that when the magnetic flux of a closed conductor loop changes, an induced electromotive force will be generated in the loop, and then an induced current will be formed. If you want to continuously obtain electric energy, you need to keep the magnetic field in which the conductor is located changing continuously, and this process is mainly realized through two technical paths: One is to generate an electromotive force, and the implementation method is to move the conductor in a static magnetic field to cut the magnetic induction lines. For example, a U-shaped magnet is moved and a wire rod between the U-shaped magnet is moved in the horizontal direction, and the wire rod generates a voltage at both ends due to cutting the magnetic induction lines; The second is to induce an electromotive force, and the implementation method is to keep the conductor static and change the magnetic field passing through the conductor itself to realize energy conversion. For example, a changing alternating current is applied to the primary coil to generate a dynamic magnetic field, and when the dynamic magnetic field passes through the secondary coil, an induced voltage is generated in the secondary coil.

[0003] Currently, for the device for coupling a multi-core cable multi-conductor to obtain electric energy based on the cable magnetic field, there are significant technical limitations: such a device has fixed requirements for the layout of the cable, and the cable needs to be placed in the device in a preset manner. It cannot be adaptively adjusted according to the cable specifications such as outer diameter and core number, nor can it be dynamically calibrated according to the actual distribution position of the cable internal conductor, ultimately resulting in constant energy collection efficiency of the device, which is difficult to meet the actual needs in different application scenarios.

[0004] Therefore, an energy collection device for coupling a multi-core cable current magnetic field to obtain electric energy is proposed. SUMMARY

[0005] Therefore, the technical problem to be solved by the present application is that the current device for coupling a multi-core cable multi-conductor to obtain electric energy based on the cable magnetic field cannot be adapted according to the size of the cable specifications, nor can it be adjusted according to the position of the cable internal conductor, resulting in fixed energy collection efficiency.

[0006] The above technical problems are solved by the following technical solutions: the present application proposes an energy collection device for coupling a multi-core cable current magnetic field to obtain electric energy, which comprises an external support seat for bearing structure; The external support seat is internally movably assembled with an electrically controlled flip type cable guide frame for adapting to the layout of different specifications of cables through a rotating shaft; A plurality of electrically controlled arc-shaped guide covers for adjusting the magnetic coupling distance are movably assembled in the length direction of the electrically controlled flip type cable guide frame; The inner arc surface of the electrically-controlled arc-shaped guide cover is slidably equipped with an electrically-controlled arc-shaped collection cover along an arc-shaped track. The inner wall of the electrically-controlled arc-shaped collection cover is fixedly equipped with a magnetic coupler for collecting the multi-conductor current magnetic field inside the cable, and the collection end of the magnetic coupler faces the center direction of the cable.

[0007] In a preferred embodiment of the energy collection device for coupling the current magnetic field of the multi-core cable to obtain electric energy, the magnetic coupler comprises a magnetic core and a collection coil. The collection coil is fixed to the outer peripheral surface of the magnetic core in a spiral winding manner, the magnetic core is used for guiding and concentrating the magnetic lines of force leaked by the cable, and the collection coil generates an induced electromotive force by inducing the change of the magnetic lines of force to output electric energy.

[0008] In a preferred embodiment of the energy collection device for coupling the current magnetic field of the multi-core cable to obtain electric energy, the magnetic core is made of soft magnetic material with high magnetic permeability, and the soft magnetic material is selected from any one of amorphous alloy, nanocrystalline or permalloy. The structure of the magnetic core is an open pincer structure or a closed ring structure.

[0009] In a preferred embodiment of the energy collection device for coupling the current magnetic field of the multi-core cable to obtain electric energy, the electrically-controlled flip-over guide frame comprises a flip-over adjusting frame pivotally mounted inside the external support seat, an adjusting support rod for controlling the flipping of the flip-over adjusting frame, and an internal guide wheel set pivotally mounted at both ends inside the flip-over adjusting frame.

[0010] In a preferred embodiment of the energy collection device for coupling the current magnetic field of the multi-core cable to obtain electric energy, both ends inside the flip-over adjusting frame are provided with internal bearing seats. The internal guide wheel set is assembled in the internal bearing seats through bearings.

[0011] In a preferred embodiment of the energy collection device for coupling the current magnetic field of the multi-core cable to obtain electric energy, the electrically-controlled arc-shaped guide cover comprises an electrically-controlled telescopic support rod fixedly mounted inside the flip-over adjusting frame, an external cover fixedly mounted at the extended end of the electrically-controlled telescopic support rod, an external transmission cover fixedly mounted on the outer arc surface of the external cover, and an arc-shaped guide limiting groove opened on the inner arc surface of the external cover.

[0012] In a preferred embodiment of the energy collection device for coupling the current magnetic field of the multi-core cable to obtain electric energy, one side end wall of the external cover is fixedly mounted with an optical distance measuring module, and the other side end wall is provided with an arc-shaped transition groove adapted to the detection light path of the optical distance measuring module. The detection direction of the optical distance measuring module is towards the cable center, for monitoring the distance between the outer shell and the cable outer wall in real time, to feedback control the telescopic amount of the electric telescopic strut.

[0013] In a preferred embodiment of the energy harvesting device for harvesting electrical energy from the magnetic field of the current of the coupled multi-core cable, the electrically controlled arc-shaped harvesting shell comprises an arc-shaped harvesting housing, a lateral assembly slot and a main drive wheel. The outer side wall of the arc-shaped harvesting housing is in sliding fit with the arc-shaped guide limiting slot. The lateral assembly slot is formed in the inner side wall of the arc-shaped harvesting housing, for embedding and fixing the magnetic coupler. The main drive wheel is assembled in the inner part of the outer transmission shell through a bearing, and the outer side wall of the arc-shaped harvesting housing is provided with an arc-shaped tooth slot engaging with the main drive wheel, and the main drive wheel is driven to rotate by the motor, so as to drive the arc-shaped harvesting housing to slide along the arc-shaped guide limiting slot.

[0014] In a preferred embodiment of the energy harvesting device for harvesting electrical energy from the magnetic field of the current of the coupled multi-core cable, the outer side wall of the outer transmission shell is provided with a side guide wheel through a lateral synchronous shaft, one end of the lateral synchronous shaft is fixedly connected with the main drive wheel, and the other end is fixedly connected with the side guide wheel, so that the side guide wheel rotates synchronously with the main drive wheel. The outer shell is provided with an arc-shaped transmission opening for the side guide wheel to pass through, and the outer side wall of the arc-shaped harvesting housing is provided with an arc-shaped guide slot in rolling fit with the side guide wheel.

[0015] In a preferred embodiment of the energy harvesting device for harvesting electrical energy from the magnetic field of the current of the coupled multi-core cable, a pressure touch switch is installed on the outer side connecting surface of the arc-shaped harvesting housing. The pressure touch switch is used for monitoring the extrusion pressure between the arc-shaped harvesting housing and the outer shell, and when the pressure exceeds a set threshold, the electrically controlled telescopic strut is controlled to stop telescoping.

[0016] The energy collection device of the coupling multi-core cable multi-conductor current magnetic field obtains electric energy has the beneficial effects that: the energy collection device of the coupling multi-core cable multi-conductor current magnetic field obtains electric energy can adjust the overall structure by adopting an electric control mode, can adjust the layout of the cable according to the overturning, thereby adapting to the layout of cables of different specifications, and improving the adaptability; the electric control arc-shaped guide cover is movably assembled in the electric control overturning type cable guide frame, the electric control arc-shaped collection cover is movably assembled on the arc-shaped surface on the inner side of the electric control arc-shaped guide cover, the distance between the magnetic coupler and the cable can be adjusted through the electric control arc-shaped guide cover, thereby adjusting the gap between the magnetic coupler and the cable of different specifications, and improving the versatility; the distance between the cable internal conductor and the magnetic coupler is kept, thereby keeping the energy collection efficiency of the conductor current magnetic field; the side guide wheel rotates synchronously with the main drive wheel outside the outer transmission cover shell, thereby driving the arc-shaped collection shell inside the arc-shaped guide limiting groove to slide and adjust, the position of the magnetic coupler can be adjusted in the circumferential direction through the sliding adjustment, so that the energy collection position is more accurate; the device can be conveniently assembled and disassembled with the cable through the electric control telescopic separation mode, the internal cable guide wheel set is arranged on both sides, the cable can be straightened, and the collection effect in different directions is guaranteed. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings of the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below only relate to some embodiments of the present application, and are not a limitation on the present application.

[0018] Figure 1 is a structural schematic diagram of the present application.

[0019] Figure 2 is a side view of the present application.

[0020] Figure 3 is an internal structure schematic diagram of the electric control arc-shaped guide cover in the present application.

[0021] Figure 4 is a structural schematic diagram of the electric control arc-shaped collection cover in the present application.

[0022] In the figure: 1, external support seat; 2, electric control overturning type cable guide frame; 21, overturning adjustment frame; 22, adjustment support rod; 23, internal cable guide wheel set; 24, internal bearing seat; 3, electric control arc-shaped guide cover; 31, electric control telescopic support rod; 32, outer cover shell; 33, outer transmission cover shell; 34, arc-shaped guide limiting groove; 35, optical distance measuring module; 36, arc-shaped transition groove; 37, pressure touch switch; 4, electric control arc-shaped collection cover; 41, arc-shaped collection shell; 411, arc-shaped tooth groove; 412, arc-shaped guide groove; 42, lateral assembly groove; 44, main drive wheel; 45, side guide wheel; 5, magnetic coupler. DETAILED DESCRIPTION

[0023] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0024] The terminology used in this invention is that which is currently widely used in the art in consideration of the function of the invention; however, these terms may vary according to the intent of those skilled in the art, precedent, or new technology in the art. Furthermore, specific terms may be chosen by the applicant, and in such cases, their detailed meanings will be described in the detailed description of the invention. Therefore, the terms used in this specification should not be construed as simple names, but rather based on their meanings and the overall description of the invention.

[0025] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 The energy harvesting device shown includes an external support base 1, an electrically controlled flip-type cable guide frame 2 movably mounted inside the external support base 1, a plurality of electrically controlled arc-shaped guide covers 3 movably mounted inside the electrically controlled flip-type cable guide frame 2, an electrically controlled arc-shaped acquisition cover 4 movably mounted on the inner arc-shaped surface of the electrically controlled arc-shaped guide cover 3, and a magnetic coupler 5 for harvesting the magnetic field of the multi-conductor current inside the cable is fixedly mounted inside the electrically controlled arc-shaped acquisition cover 4.

[0026] The magnetic coupler 5 includes a magnetic core and a acquisition coil.

[0027] The magnetic core is made of a soft magnetic material with high permeability, which can be an amorphous alloy, nanocrystalline material, or permalloy. The function of the magnetic core is to "guide" and "concentrate" the magnetic lines of force leaking from the cable, allowing them to pass through the coil in large quantities, greatly improving coupling efficiency and output power. The magnetic core is usually designed as an open clamp structure or a closed ring structure for easy installation.

[0028] The acquisition coil is a multi-turn thin copper wire spirally wound on a magnetic core. The acquisition coil generates an induced electromotive force by inducing changes in magnetic field lines to output electrical energy.

[0029] According to Ampere's circuital law, any current-carrying conductor will generate a circular magnetic field around it that is proportional to the current. A multi-core cable contains multiple conductors, and the magnetic field at any point outside the cable is the vector superposition of the magnetic fields generated by all the conductors.

[0030] The task of this "magnetic coupler" is to: distinguish these superimposed magnetic fields in space; measure the magnitude and direction of these magnetic fields; and calculate the current flowing through each conductor using an algorithm. The magnetic core is used to concentrate and amplify the magnetic field leaking from the cable, and the change in magnetic flux through the core generates an alternating voltage across the coil.

[0031] Power Management Circuit (PMC): The raw electrical energy generated by the coil is usually low, unstable and alternating current, which cannot directly power electronic devices. The power management circuit, abbreviated as PMC, is the key: including rectifier bridge, voltage regulator / regulator; energy storage element; maximum power point tracking.

[0032] Rectifier bridge: convert alternating current to direct current. Usually use low-power full-bridge or half-bridge rectifier circuit.

[0033] Voltage regulator / regulator: stabilize the fluctuating DC voltage after rectification to a fixed value, such as 3.3V or 5V.

[0034] Energy storage element: super capacitor or rechargeable battery. Due to the fluctuation or even temporary interruption of the cable current, the energy storage element can store energy to smooth the power supply when the load needs large current or the input energy is insufficient.

[0035] Maximum power point tracking: for advanced systems, the maximum power point tracking algorithm can dynamically adjust the load to make the energy harvester always work at the maximum power output point, improving efficiency.

[0036] The magnetic core, the collection coil and the energy processing circuit are prior art.

[0037] In order to cooperate with the electric control adjustment and overturn, the electric control overturning cable guide frame 2 includes a overturning adjustment frame 21 movably mounted in the inside of the external support seat 1, an adjustment support rod 22 for controlling the overturning of the overturning adjustment frame 21, and an internal cable guide wheel group 23 movably mounted at both ends inside the overturning adjustment frame 21.

[0038] The adjustment support rod 22 changes the angle of the overturning adjustment frame 21 by stretching and retracting, so as to adapt to the installation position of the cable. It can not only be suitable for fixed layout cable, but also remove the external support seat 1 and externally hang the overturning adjustment frame 21 outside the cable.

[0039] In order to cooperate with the electric control guide, the electric control arc-shaped guide cover 3 includes an electric control telescopic support rod 31 fixedly mounted in the inside of the overturning adjustment frame 21, an external cover 32 fixedly mounted at the extending end of the electric control telescopic support rod 31, an external transmission cover 33 fixedly mounted on the arc-shaped surface outside the external cover 32, and an arc-shaped guide limiting groove 34 opened on the arc-shaped surface inside the external cover 32.

[0040] The electric control telescopic support rod 31 adjusts the distance between the external cover 32 and the cable by stretching and retracting.

[0041] In order to match the energy collection module assembly, the electric control type arc-shaped collection cover 4 includes an arc-shaped collection shell 41 slidingly installed inside the arc-shaped guide limiting groove 34, a lateral assembly groove 42 for fixing the magnetic coupler 5, and a main drive wheel 44 installed inside the external cover shell 33.

[0042] The lateral assembly groove 42 is opened on the inner side of the arc-shaped collection shell 41, and the magnetic coupler 5 is fixed inside the arc-shaped collection shell 41, which is driven to approach or move away from the cable by the external cover shell 32.

[0043] In order to match the drive adjustment, the arc-shaped surface of the arc-shaped collection shell 41 is provided with an arc-shaped tooth groove 411 matched with the main drive wheel 44.

[0044] The main drive wheel 44 drives the arc-shaped collection shell 41 to slide and adjust inside the arc-shaped guide limiting groove 34 by rotating, and then can be switched inside the arc-shaped guide limiting groove 34 inside the adjacent external cover shell 32.

[0045] In order to match the movable assembly, the inside of the turnover adjustment frame 21 is provided with an internal bearing seat 24 for installing an internal cable guide wheel set 23 at both ends.

[0046] The internal cable guide wheel set 23 includes a drive wheel and a guide wheel movably installed inside the internal bearing seat 24, and the drive wheel and the guide wheel are installed in an elastic spacing adjustable manner, which can be adapted to different supported cables. The cable is guided into the internal cable guide wheel set 23 at one end of the turnover adjustment frame 21, and then guided out of the internal cable guide wheel set 23 at the other end.

[0047] In order to match the optical detection distance between the arc-shaped collection shell 41 and the cable, the external cover shell 32 is fixedly installed with an optical distance measuring module 35 on one side, and an arc-shaped transition groove 36 matched with the optical distance measuring module 35 is opened on the other side.

[0048] The arc-shaped collection shell 41 also has an arc-shaped transition groove 36 on the same side.

[0049] When the electric control telescopic support 31 is controlled to stretch and retract the external cover shell 32 to press towards the cable, the distance between the external cover shell 32 and the cable is measured by the optical distance measuring module 35, so as to adjust the magnetic coupler 5 inside the electric control type arc-shaped collection cover 4 to always maintain a minimum set distance from the cable.

[0050] In order to match the pressure monitoring, avoid over-pressing the external cover shell 32 controlled by the electric control telescopic support 31, and thus affect the service life, a pressure touch switch 37 is installed on the outer side connecting surface of the arc-shaped collection shell 41.

[0051] When the arc-shaped collecting shell 41 moves outward, the pressure touch switch 37 will be pressed, and the pressure touch switch 37 will control the electric control telescopic supporting rod 31 to close, so as to avoid extrusion deformation.

[0052] In order to ensure the adjustment stability of the arc-shaped collecting shell 41, the outer transmission cover 33 is equipped with a lateral guide wheel 45 which rotates synchronously with the main driving wheel 44 through a lateral synchronous shaft on the outer side of the outer transmission cover 33. An arc-shaped transmission opening which cooperates with the lateral guide wheel 45 is formed on the outer transmission cover 32, and an arc-shaped guide groove 412 which cooperates with the lateral guide wheel 45 is formed on the arc-shaped surface of the arc-shaped collecting shell 41.

[0053] The main driving wheel 44 is engaged with the arc-shaped tooth groove 411 through a tooth surface, and the lateral guide wheel 45 is in contact with the inner wall of the arc-shaped guide groove 412 through the arc-shaped transmission opening.

[0054] The main driving wheel 44 and the lateral guide wheel 45 act on the arc-shaped surface of the arc-shaped collecting shell 41 synchronously, so as to ensure the balance of the external force acting on the arc-shaped collecting shell 41.

[0055] Finally, it should be noted that the above detailed description of the method and device is only an embodiment, and those skilled in the art can modify the embodiment in different ways without departing from the scope of the present application.

Claims

1. An energy harvesting device for obtaining electrical energy by coupling the current magnetic field of a multi-core cable, characterized in that: Includes an external support base (1) for the load-bearing structure; The external support base (1) is equipped with an electrically controlled flip-type cable guide frame (2) for adapting to different cable layouts via a rotating shaft. The electrically controlled flip-type cable guide frame (2) is equipped with a plurality of electrically controlled arc-shaped guide covers (3) for adjusting the magnetic coupling distance, which are movably mounted at intervals along its length. The electrically controlled arc-shaped guide cover (3) is slidably fitted with an electrically controlled arc-shaped acquisition cover (4) along an arc-shaped trajectory on the inner arc-shaped surface. The inner wall of the electrically controlled arc-shaped acquisition cover (4) is fixedly equipped with a magnetic coupler (5) for targeted acquisition of the magnetic field of multi-conductor current inside the cable, and the acquisition end of the magnetic coupler (5) faces the center of the cable.

2. The energy harvesting device for obtaining electrical energy from the current magnetic field of a coupled multi-core cable according to claim 1, characterized in that: The magnetic coupler (5) includes a magnetic core and a data acquisition coil; The acquisition coil is fixed to the outer circumference of the magnetic core in a spiral winding manner. The magnetic core is used to guide and concentrate the magnetic lines of force leaking from the cable. The acquisition coil generates an induced electromotive force by sensing changes in the magnetic lines of force to output electrical energy.

3. The energy harvesting device for obtaining electrical energy from the magnetic field of coupled multi-core cable current according to claim 2, characterized in that: The magnetic core is made of a soft magnetic material with high permeability, and the soft magnetic material is selected from any one of amorphous alloy, nanocrystalline or permalloy. The magnetic core has an open clamp structure or a closed ring structure.

4. The energy harvesting device for obtaining electrical energy from the magnetic field of coupled multi-core cable current according to claim 1, characterized in that: The electrically controlled flip-type cable guide frame (2) includes a flip adjustment frame (21) movably mounted inside the external support base (1), an adjustment support rod (22) for controlling the flip adjustment frame (21) to flip, and an internal cable guide wheel assembly (23) movably mounted at both ends inside the flip adjustment frame (21).

5. The energy harvesting device for obtaining electrical energy from the magnetic field of coupled multi-core cable current according to claim 4, characterized in that: Both ends of the inside of the flip adjustment frame (21) are provided with internal bearing seats (24). The internal cable guide wheel assembly (23) is mounted in the internal bearing housing (24) via bearings.

6. The energy harvesting device for obtaining electrical energy from the current magnetic field of a coupled multi-core cable according to claim 1 or 4, characterized in that: The electrically controlled arc-shaped guide cover (3) includes an electrically controlled telescopic support rod (31) fixedly installed inside the flip adjustment frame (21), an outer cover (32) fixedly installed at the extended end of the electrically controlled telescopic support rod (31), an outer transmission cover (33) fixedly installed on the outer arc surface of the outer cover (32), and an arc-shaped guide limiting groove (34) opened on the inner arc surface of the outer cover (32).

7. The energy harvesting device for obtaining electrical energy from the magnetic field of coupled multi-core cable current according to claim 6, characterized in that: An optical ranging module (35) is fixedly installed on one side end wall of the outer casing (32), and an arc-shaped transition groove (36) adapted to the detection optical path of the optical ranging module (35) is opened on the other side end wall. The optical ranging module (35) is directed toward the center of the cable and is used to monitor the distance between the outer casing (32) and the outer wall of the cable in real time, so as to provide feedback control on the extension and retraction of the electrically controlled telescopic support rod (31).

8. The energy harvesting device for obtaining electrical energy from the magnetic field of coupled multi-core cable current according to claim 6, characterized in that: The electrically controlled arc-shaped acquisition cover (4) includes an arc-shaped acquisition housing (41), a lateral assembly groove (42), and a main drive wheel (44). The outer wall of the arc-shaped acquisition housing (41) is slidably fitted with the arc-shaped guide limiting groove (34); The lateral mounting groove (42) is opened on the inner side wall of the arc-shaped acquisition housing (41) and is used to embed and fix the magnetic coupler (5). The main drive wheel (44) is mounted inside the outer transmission housing (33) by bearings, and the outer side wall of the arc-shaped collection housing (41) is provided with an arc-shaped tooth groove (411) that meshes with the main drive wheel (44). The main drive wheel (44) is driven to rotate by a motor so as to drive the arc-shaped collection housing (41) to slide along the arc-shaped guide limiting groove (34).

9. The energy harvesting device for obtaining electrical energy from the magnetic field of coupled multi-core cable current according to claim 8, characterized in that: The outer side wall of the external transmission housing (33) is equipped with a side guide wheel (45) via a lateral synchronous shaft. One end of the lateral synchronous shaft is fixedly connected to the main drive wheel (44), and the other end is fixedly connected to the side guide wheel (45), so that the side guide wheel (45) rotates synchronously with the main drive wheel (44). The outer casing (32) has an arc-shaped transmission port through which the side-mounted guide wheel (45) passes, and the outer side wall of the arc-shaped collection housing (41) has an arc-shaped guide groove (412) that rolls with the side-mounted guide wheel (45).

10. The energy harvesting device for obtaining electrical energy from the magnetic field of coupled multi-core cable current according to claim 8, characterized in that: A pressure touch switch (37) is installed on the outer connecting surface of the arc-shaped acquisition housing (41). The pressure touch switch (37) is used to monitor the compression pressure between the arc-shaped acquisition housing (41) and the outer cover (32). When the pressure exceeds the set threshold, the electronically controlled telescopic support rod (31) is controlled to stop extending and retracting.

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