A magnetic drive energy harvester based on adaptive control

Abstract

The present invention discloses a magnetic drive energy harvester based on adaptive control, which includes a magnetic drive linear-rotary mechanism, an energy harvesting system, and an adaptive control system. By setting at least one of the spiral permanent magnets of the linear and rotary components of the magnetic drive linear-rotary mechanism to a structure with adjustable lift, the lift of the spiral permanent magnet can be changed by adjusting the position of the permanent magnet mounting member, thereby changing the rotation speed of the rotating member. With the setting of the adaptive control system, the structural parameters of the magnetic drive linear-rotary mechanism (i.e., the spiral lift of the spiral-arranged permanent magnets) can be changed under the control of the adaptive algorithm to adapt to external loads at different frequencies, enabling the energy harvesting system to always be at the optimal energy recovery point and improving the efficiency of energy harvesting.

Description

Technical Field

[0001] The present invention relates to the field of clean energy, and particularly to a magnetic drive energy harvester based on adaptive control. Background Art

[0002] With the increasing prominence of environmental problems, how to utilize clean energy has become a new research hotspot. Currently, common new energy utilization mainly includes photovoltaic solar power generation, wind power generation, hydroelectric power generation, and wave power generation, etc. Compared with the other several types, wave power generation has the following three advantages: (1) Waves are widely distributed, not only with huge reserves but also with a high energy density; (2) Waves are less affected by weather, and different power generation devices can be arranged in different regions according to hydrological data; (3) Groups of wave power generation stations can convert a large amount of kinetic energy of the sea waves into electrical energy, thereby playing a role in protecting the embankment. Currently, wave power generation mostly uses a linear-rotary mechanism to complete the transformation from low-speed linear motion to high-speed rotary motion to achieve the corresponding power generation purpose. Because traditional mechanical lead screw nuts or mechanical rack and pinion mechanisms are prone to damage under impact loads and are easily corroded in a seawater environment, they are gradually replaced by magnetic drive linear-rotary mechanisms.

[0003] The magnetic drive linear-rotary mechanism includes an inner ring linear motion mechanism and an outer ring rotary motion mechanism. Spiral magnets are arranged on both the inner and outer rings. Among them, the inner ring linear motion mechanism is connected to an offshore buoy, and the outer ring rotary motion mechanism is connected to a power generation device. When the inner ring linear motion mechanism generates linear motion under the action of sea waves, the spiral magnets on the inner and outer rings produce relative misalignment. The spiral magnets on the inner ring generate a torsional moment and act on the spiral magnets of the outer ring rotary motion mechanism, causing the outer ring rotary motion mechanism to drive the coil to rotate and cut the magnetic induction line to generate electrical energy. However, the energy harvesting of existing energy harvesters based on magnetic drive linear-rotary mechanisms is unstable, and the range where the peak voltage of energy harvesting appears is very narrow. When the external excitation frequency changes slightly, the peak power will drop significantly, which makes the energy harvesting quality very unstable and is greatly affected by external loads; moreover, once the structural parameters of the magnetic drive linear-rotary mechanism are determined, they cannot be modified, which will result in only a small part of the daily wave power generation being in the optimal power generation range, seriously affecting the energy harvesting efficiency.

[0004] Therefore, it is necessary to propose a new type of wave power generation mechanism to overcome the problems of unstable energy harvesting and low energy harvesting efficiency existing in the above-mentioned existing energy harvesters. Summary of the Invention

[0005] The object of the present invention is to provide a magnetic drive energy harvester based on adaptive control, which can adjust the structural parameters of the magnetic drive linear-rotary mechanism in real time according to the change of the wave load frequency, ensure that the lift of the permanent magnet remains in the optimal power generation range, so as to increase the stability and efficiency of energy harvesting, and further solve the problems of unstable energy harvesting and low energy harvesting efficiency existing in the existing energy harvesters.

[0006] To achieve the above object, the present invention provides the following solutions:

[0007] The present invention provides a magnetic drive energy harvester based on adaptive control, comprising:

[0008] A magnetic drive linear-rotary mechanism, the magnetic drive linear-rotary mechanism includes a base, a linear moving member and a rotating member. The linear moving member includes a linear guide rod and a first permanent magnet mounting member arranged on the outer periphery of the linear guide rod. The linear guide rod is arranged on the upper surface of the base, and the linear guide rod can move along its own axial direction. The first permanent magnet mounting member is provided with first permanent magnets arranged in a spiral pattern. The rotating member includes a second permanent magnet mounting member sleeved on the outer periphery of the linear guide rod. The second permanent magnet mounting member is provided with second permanent magnets arranged in a spiral pattern. The second permanent magnet mounting member can rotate around the axial direction of the linear guide rod. At least one of the first permanent magnet mounting member and the second permanent magnet mounting member is set as a variable lift unit. The variable lift unit includes an elastic spiral mounting belt and a mounting belt telescopic mechanism. When the first permanent magnet mounting member is set as the variable lift unit, the first permanent magnets arranged in a spiral pattern are arranged on the spiral mounting belt. When the second permanent magnet mounting member is set as the variable lift unit, the second permanent magnets arranged in a spiral pattern are arranged on the spiral mounting belt. At least one end of the spiral mounting belt is connected to the mounting belt telescopic mechanism. The mounting belt telescopic mechanism is used to squeeze or stretch the spiral mounting belt to adjust the lift of the spiral mounting belt. One end of the linear guide rod is used to connect with an offshore buoy.

[0009] An energy harvesting system, the energy harvesting system includes a permanent magnet power generation stator and a permanent magnet power generation rotor. The permanent magnet power generation rotor is connected to the second permanent magnet mounting member. One of the permanent magnet power generation stator and the permanent magnet power generation rotor is a coil, and the other includes a plurality of power generation permanent magnets distributed on the outer periphery of the coil. The coil is used to cut the magnetic induction lines generated by the power generation permanent magnets to generate current.

[0010] An adaptive control system, the adaptive control system includes a sensor component. The sensor component is communicatively connected to the mounting belt telescopic mechanism. The sensor component is used to sense the change of the wave load.

[0011] Optionally, the second permanent magnet mount is provided as the variable lift unit, and the first permanent magnet mount is fixed to the outer periphery of the direct-acting guide rod;

[0012] The permanent magnet generator rotor is the coil and is connected to the spiral mounting belt;

[0013] The permanent magnet generator stator includes a plurality of power generation permanent magnets distributed on the outer periphery of the coil.

[0014] Optionally, the first permanent magnet mount is integrally formed with the direct-acting guide rod, and the first permanent magnet is embedded on the first permanent magnet mount.

[0015] Optionally, the permanent magnet generator stator includes:

[0016] A first power generation permanent magnet, the first power generation permanent magnet is disposed on the upper surface of the base through a first spacer block, and one side of the first power generation permanent magnet is provided as a first arc surface;

[0017] A second power generation permanent magnet, the second power generation permanent magnet is disposed on the upper surface of the base through a second spacer block, the second power generation permanent magnet is disposed opposite to the first power generation permanent magnet, and the magnetic poles of the second power generation permanent magnet and the first power generation permanent magnet are arranged in opposite directions; the side of the second power generation permanent magnet opposite to the first power generation permanent magnet is provided as a second arc surface, and the coil is located between the first arc surface and the second arc surface.

[0018] Optionally, the mounting belt telescoping mechanism includes:

[0019] Flange plates, the flange plates are slidably mounted on the upper surface of the base through flange seats; there are two flange plates, and the two flange plates are disposed opposite to each other, both ends of the direct-acting guide rod respectively penetrate through the two flange plates, and both ends of the spiral mounting belt are respectively rotatably connected to one of the flange plates through rotating bearings;

[0020] A telescoping drive, the telescoping drive is connected to the flange seat to drive the two flange seats to approach or move away from each other; the telescoping drive is communicatively connected to the sensor component.

[0021] Optionally, each flange seat is connected to one telescoping drive.

[0022] Optionally, the telescoping drive is a telescoping cylinder, a telescoping hydraulic cylinder, an electric telescoping rod or a lead screw configured with a motor, and the lead screw is threadedly connected to the flange seat.

[0023] Optionally, a chute parallel to the direct-acting guide rod is formed on the base, and a slider slidably engaged with the chute is provided on the flange seat.

[0024] Optionally, the direct-acting guide rod includes a first guide rod, a second guide rod, and a third guide rod that are sequentially connected and arranged. The first permanent magnet mounting member is fixed to the second guide rod; the first guide rod and the third guide rod are respectively in sliding fit with the two flange plates.

[0025] Optionally, both the first guide rod and the third guide rod are in sliding fit with the corresponding flange plates through linear bearings; the linear bearings are mounted on the flange plates.

[0026] Optionally, the spiral mounting belt is made of an elastic material. For example, it is made of spring steel.

[0027] Optionally, the second permanent magnet is a cylindrical permanent magnet; a plurality of the cylindrical permanent magnets are discretely distributed on the spiral mounting belt.

[0028] Optionally, after the spiral mounting belt is unfolded, it forms a rectangular belt-like structure, and two columns of the second permanent magnets are arranged on the outer surface of the rectangular belt-like structure along its length direction.

[0029] Optionally, both the first permanent magnet mounting member and the second permanent magnet mounting member are provided as the variable lift unit.

[0030] The present invention has achieved the following technical effects compared with the prior art:

[0031] The magnetic drive energy harvester based on adaptive control proposed by the present invention can change the lift of the spiral permanent magnet by adjusting the position of the permanent magnet mounting member, and then change the rotation speed of the rotating member by setting at least one of the spiral permanent magnets in the linear moving member and the rotating member to a structure with adjustable lift. With the setting of the adaptive control system, it can change the structural parameters of the magnetic drive linear-rotary mechanism (i.e., the spiral lift of the spirally arranged permanent magnets) under the control of the adaptive algorithm to adapt to external loads at different frequencies, so that the energy harvesting system is always at the optimal energy recovery point and the energy harvesting efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0033] Figure 1 It is a schematic structural diagram of the magnetic drive energy harvester based on adaptive control disclosed in the embodiments of the present invention;

[0034] Figure 2Schematic structural diagram of the magnetic drive linear-rotary mechanism disclosed in the embodiments of the present invention;

[0035] Figure 3 Cross-sectional view of the magnetic drive linear-rotary mechanism disclosed in the embodiments of the present invention.

[0036] Among them, the reference numerals are:

[0037] 100, magnetic drive linear-rotary mechanism; 200, coil; 300, first power generation permanent magnet; 400, second power generation permanent magnet;

[0038] 1, first cushion block; 2, first arc surface; 3, second arc surface; 4, base; 5, linear guide rod; 51, first section guide rod; 52, second section guide rod; 53, third section guide rod; 6, first permanent magnet; 7, spiral mounting belt; 8, flange; 9, flange seat; 10, chute; 11, rotating bearing; 12, linear bearing; 13, telescopic drive. Specific embodiments

[0039] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0040] One of the objectives of the present invention is to provide a magnetic drive energy harvester based on adaptive control, which can adjust the structural parameters of the magnetic drive linear-rotary mechanism in real time according to the change of the wave load frequency, ensure that the lift of the permanent magnet remains in the optimal power generation range, so as to increase the stability and efficiency of energy harvesting, and further solve the problems of unstable energy harvesting and low energy harvesting efficiency existing in the existing energy harvesters.

[0041] To make the above objectives, features and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0042] Embodiment 1

[0043] As Figures 1 to 3 shown, this embodiment provides a magnetic drive energy harvester based on adaptive control, which mainly includes a magnetic drive linear-rotary mechanism 100, an energy harvesting system and an adaptive control system. Among them:

[0044] The magnetic drive linear-rotary mechanism 100 mainly includes a base 4, a linear moving member, and a rotating member. The linear moving member includes a linear guide rod 5 and a first permanent magnet mounting member disposed on the outer periphery of the linear guide rod 5. The linear guide rod 5 is disposed on the upper surface of the base 4, and the linear guide rod 5 can reciprocate along its own axis. The first permanent magnet mounting member is provided with first permanent magnets 6 arranged in a spiral pattern. The rotating member includes a second permanent magnet mounting member sleeved on the outer periphery of the linear guide rod 5. The second permanent magnet mounting member is provided with second permanent magnets arranged in a spiral pattern. The second permanent magnet mounting member can rotate around the axis of the linear guide rod 5. In this embodiment, the second permanent magnet mounting member is set as a variable lift unit, while the first permanent magnet mounting member is fixedly installed on the outer periphery of the linear guide rod 5. The variable lift unit includes an elastic spiral mounting belt 7 and a mounting belt telescoping mechanism. The spiral mounting belt 7 is provided with second permanent magnets arranged in a spiral pattern. At least one end of the spiral mounting belt 7 is connected to the mounting belt telescoping mechanism. The mounting belt telescoping mechanism is used to squeeze or stretch the spiral mounting belt 7 to adjust the lift (or "spiral lift") of the spiral mounting belt 7. The first permanent magnet mounting member and the first permanent magnets 6 thereon can only move linearly back and forth along the axis of the linear guide rod 5. In actual operation, the first permanent magnet mounting member and the linear guide rod 5 can be a split structure. The first permanent magnet mounting member wraps around the outer layer of the linear guide rod 5 and can be fixed to the linear guide rod 5 by means such as bolt connection, key connection, and interference fit. At the same time, the first permanent magnet mounting member and the linear guide rod 5 can also be an integrally formed structure, that is, the first permanent magnet mounting member is formed on the outer surface of the linear guide rod 5, and the first permanent magnets 6 are embedded in the first permanent magnet mounting member. One end of the linear guide rod 5 is used to connect to an offshore buoy.

[0045] The energy harvesting system includes a permanent magnet generator stator and a permanent magnet generator rotor, and the permanent magnet generator rotor is connected to a second permanent magnet mounting member; one of the permanent magnet generator stator and the permanent magnet generator rotor is a coil, and the other includes a plurality of power generation permanent magnets distributed on the outer periphery of the coil. The coil is used to cut the magnetic induction lines generated by the power generation permanent magnets to generate current; as a preferred embodiment, in this embodiment, the permanent magnet generator rotor is a coil 200 and is connected to a spiral mounting band 7, and the permanent magnet generator stator includes a plurality of power generation permanent magnets distributed on the outer periphery of the coil 200. The permanent magnet generator stator includes two power generation permanent magnets, a first power generation permanent magnet 300 and a second power generation permanent magnet 400. The first power generation permanent magnet 300 is disposed on the upper surface of the base 4 through a first spacer 1, and one side of the first power generation permanent magnet 300 is set as a first arc surface 2; the second power generation permanent magnet is disposed on the upper surface of the base 4 through a second spacer, the second power generation permanent magnet 400 is disposed opposite to the first power generation permanent magnet 300, and the poles of the second power generation permanent magnet 400 and the first power generation permanent magnet 300 are arranged in opposite directions; the side of the second power generation permanent magnet 400 opposite to the first power generation permanent magnet 300 is set as a second arc surface 3, and the coil 200 is located between the first arc surface 2 and the second arc surface 3. When the coil 200 rotates, it will cut the magnetic induction lines formed between the second power generation permanent magnet 400 and the first power generation permanent magnet 300, thereby generating current to form electrical energy for storage or direct use.

[0046] The adaptive control system includes a sensor device, and the sensor device is communicatively connected to the mounting band telescopic mechanism. The sensor device is used to sense changes in wave loads. The control form of this control system is determined according to the wave load frequency, and the structural parameters (i.e., the helix lift of the second permanent magnets arranged in a spiral) can be adjusted in real time to ensure that the permanent magnet lift is maintained within the optimal power generation range to increase the efficiency of energy harvesting.

[0047] In this embodiment, the above energy harvesting system is an existing current generation technology and will not be elaborated here.

[0048] Furthermore, the installation belt telescopic mechanism in this embodiment mainly includes a flange 8 and a telescopic drive 13. The flange 8 is slidably mounted on the upper surface of the base 4 through a flange seat 9; there are two flanges 8, and the two flanges 8 are arranged oppositely. Both ends of the direct-acting guide rod 5 penetrate through the two flanges 8 respectively and are slidably matched with the flanges 8. The spiral installation belt 7 is sleeved on the outer periphery of the distribution area of the first permanent magnet 6 on the direct-acting guide rod 5, and both ends of the spiral installation belt 7 are rotatably connected to a flange 8 through a rotating bearing 11 respectively. The spiral installation belt 7 can rotate relative to the flange 8 under the action of the rotating bearing 11. The spiral installation belt 7 is arranged in a non-contact manner with the direct-acting guide rod 5, the first permanent magnet mounting member, and the first permanent magnet 6, that is, there is no direct connection relationship between the spiral installation belt 7 and the direct-acting guide rod 5, the first permanent magnet mounting member, and the first permanent magnet 6. When the direct-acting guide rod 5 is the driving member, when the direct-acting guide rod 5 makes a linear reciprocating movement, the spiral installation belt 7, as the outer rotating member, can perform a torsional movement under the action of the torsional moment generated by the first permanent magnet 6 on the direct-acting guide rod 5; when the spiral installation belt 7 is the driving member, the spiral installation belt 7, as the outer rotating member, performs a torsional movement, and the direct-acting guide rod 5 inside it can perform an axial linear movement under the thrust force generated by the spiral installation belt 7. The above-mentioned telescopic drive 13 is connected to the flange seat 9 and is used to drive the two flange seats 9 to approach or move away from each other. The transmission ratio between the linear moving member and the rotating member is inversely proportional to the helix pitch of the helically arranged permanent magnets. When the telescopic drive 13 squeezes the two flange seats 9 and makes them approach each other (or is called "moving towards each other"), the spiral installation belt 7 is squeezed, its helix pitch decreases, and the corresponding rotational speed will increase. On the contrary, when the two flange seats 9 move away from each other (or is called "moving away from each other"), the spiral installation belt 7 is stretched, the helix pitch increases, and the corresponding rotational speed will decrease. The output rotational speed can be controlled by adjusting the distance between the two flange seats 9 through the telescopic drive 13.

[0049] In this embodiment, a chute 10 parallel to the direct-acting guide rod 5 is provided on the base 4, and a slider that is slidably engaged with the chute 10 is provided on the flange seat 9. In actual operation, one flange seat 9 can be fixedly arranged, and the other flange seat 9 is slidably engaged with the chute 10 through the slider; similarly, both flange seats 9 can also be slidably engaged with the chute 10 through the slider. Correspondingly, one flange seat 9 can be fixedly arranged, and the other flange seat 9 is connected to the telescopic drive 13 to realize the relative adjustment between the two flange seats 9; alternatively, both flange seats 9 can be connected to a telescopic drive 13, which can also realize the relative adjustment between the two flange seats 9. Among them, there are many forms of setting the telescopic drive 13, such as a telescopic cylinder, a telescopic hydraulic cylinder, an electric telescopic rod, or a lead screw configured with a motor. When a lead screw configured with a motor is adopted, the lead screw, the flange seat 9, the slider on the flange seat 9, and the chute 10 together form a lead screw-slider mechanism, achieving the effect of driving the flange seat 9 to reciprocate along the chute 10.

[0050] In this embodiment, the direct-acting guide rod 5 includes a first section of guide rod 5121, a second section of guide rod 5222, and a third section of guide rod 5323 that are sequentially connected. The first permanent magnet 6 mounting member is fixed to the second section of guide rod 5222; the first section of guide rod 5121 and the third section of guide rod 5323 are respectively slidably engaged with the two flange plates 8. As a preferred method, both the first section of guide rod 5121 and the third section of guide rod 5323 are slidably engaged with the corresponding flange plate 8 through linear bearings 12; the linear bearings 12 are installed on the flange plates 8.

[0051] In this embodiment, the spiral mounting belt 7 is in a rectangular belt-like structure after being unfolded, and two rows of second permanent magnets are arranged on the outer surface of the rectangular belt-like structure along its length direction, and the second permanent magnets on any one row are evenly spaced. Among them, the second permanent magnet is preferably a cylindrical permanent magnet.

[0052] In this embodiment, the spiral mounting belt 7 is made of an elastic material, such as spring steel.

[0053] In this embodiment, the first permanent magnet is preferably a cylindrical permanent magnet. The cylindrical permanent magnets are installed in the spiral mounting belt 7 in a discretized form. Compared with the traditional columnar structure, the spiral mounting belt 7 greatly saves the processing cost of the rotating parts.

[0054] In this embodiment, the above-mentioned "rotating parts" can all be called "rotating components".

[0055] The working principle of the above variable lift magnetic drive linear-rotary mechanism in this embodiment will be specifically described below.

[0056] In the traditional magnetic drive linear-rotary mechanism, since the lift τ of its helical permanent magnet remains unchanged, the output rotational speed ω is only related to the linear motion speed ν, that is, ω = 2πν / τ. Therefore, when the linear motion caused by the external excitation is uncontrollable, the output rotational speed ω also shows uncontrollable characteristics. When the output rotational speed exceeds the load capacity of the system, the connection between the drive system and the external load must be disconnected, which will greatly reduce the working time of the drive system. However, for the variable-lift helical permanent magnet in the variable-lift magnetic drive linear-rotary drive system of this embodiment, the lift of the helical mounting belt 7 on the outer ring is adjusted by the telescopic drive 13 to achieve variable-speed drive. When the linear guide rod 5 on the inner ring moves linearly, the rotational speed of the helical mounting belt 7 on the outer ring is related to the linear motion speed of the linear guide rod 5 and its own helical lift. While the linear motion changes due to the external excitation, the helical lift of the helical mounting belt 7 is adjusted to offset the change in the rotational speed ω and maintain the rotational speed ω within a stable range, so the working time of the system can be increased and the efficiency can be improved. In addition, the adjustment method of the helical lift of the helical mounting belt 7 is flexible and diverse. By changing the distance between the two flange plates, the lift can be changed, which can adapt to the linear-rotary drive under different external load conditions.

[0057] The variable-lift magnetic drive linear-rotary mechanism disclosed in this embodiment can adjust the distance between the two flange plates when the linear motion speed changes, so as to ensure that the output rotational speed remains within the target range. Taking seawater power generation as an example, the wave speed will constantly change. When the seawater speed is too high, the rotational speed will exceed the use range, so this part of the energy has to be abandoned. However, by increasing the helical lift of the outer ring, that is, the helical mounting belt 7, the rotational speed of the outer ring (i.e., the helical mounting belt 7) can be reduced, ensuring that the rotational output is maintained within the corresponding range and increasing the energy collection efficiency.

[0058] The above-mentioned magnetic drive energy harvester based on adaptive control in this embodiment drives the spiral mounting belt 7 on the outer ring to rotate through the linear motion of the linear guide rod 5, and then transmits the rotation to the coil at the end for energy harvesting. The telescopic drive 13 can change the helix pitch of the spiral mounting belt 7 on the outer ring according to the motion signal of the linear guide rod 5, so as to change the transmission parameters of the linear-rotary mechanism to ensure that the output rotational speed remains constant. When the wave load changes, the corresponding signal is detected by the sensor device and transmitted to the telescopic drive 13 through the encoder, and the telescopic drive 13 squeezes or stretches the spiral mounting belt 7 to adaptively regulate the helix pitch of the spiral mounting belt 7, so that the helix pitch of the spiral mounting belt 7 is adjusted to the corresponding optimal working range. Generally, the change in the wave speed will cause the linear motion speed of the linear guide rod 5 to increase. In order to keep the output rotational speed within a stable range, the influence of the wave change is offset by increasing the helix pitch of the spiral mounting belt 7, so that the energy harvesting remains in a stable state, which not only broadens the optimal working range of the energy harvesting system, but also improves the power generation sales of the wave power generation.

[0059] It should be noted that for those skilled in the art, it is obvious that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention, and any reference signs in the claims should not be regarded as limiting the claims involved.

[0060] In the present invention, specific examples are used to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A magnetic drive energy harvester based on adaptive control, characterized in that, it includes: A magnetic drive linear-rotary mechanism, the magnetic drive linear-rotary mechanism includes a base, a linear moving member and a rotating member. The linear moving member includes a linear guide rod and a first permanent magnet mounting member arranged on the outer periphery of the linear guide rod. The linear guide rod is arranged on the upper surface of the base, and the linear guide rod can move along its own axial direction. The first permanent magnet mounting member is provided with first permanent magnets arranged in a spiral pattern. The rotating member includes a second permanent magnet mounting member sleeved on the outer periphery of the linear guide rod. The second permanent magnet mounting member is provided with second permanent magnets arranged in a spiral pattern. The second permanent magnet mounting member can rotate around the axial direction of the linear guide rod. At least one of the first permanent magnet mounting member and the second permanent magnet mounting member is set as a variable lift unit. The variable lift unit includes an elastic spiral mounting belt and a mounting belt telescoping mechanism. And when the first permanent magnet mounting member is set as the variable lift unit, the first permanent magnets arranged in a spiral pattern are arranged on the spiral mounting belt. When the second permanent magnet mounting member is set as the variable lift unit, the second permanent magnets arranged in a spiral pattern are arranged on the spiral mounting belt. At least one end of the spiral mounting belt is connected to the mounting belt telescoping mechanism. The mounting belt telescoping mechanism is used to squeeze or stretch the spiral mounting belt to adjust the lift of the spiral mounting belt. One end of the linear guide rod is used to connect to an offshore buoy; An energy harvesting system, the energy harvesting system includes a permanent magnet generator stator and a permanent magnet generator rotor. The permanent magnet generator rotor is a coil and is connected to the second permanent magnet mounting member. The permanent magnet generator stator includes a plurality of generating permanent magnets distributed on the outer periphery of the coil. The coil is used to cut the magnetic induction lines generated by the generating permanent magnets to generate current; An adaptive control system, the adaptive control system includes a sensor component. The sensor component is communicatively connected to the mounting belt telescoping mechanism. The sensor component is used to sense changes in wave loads.

2. The magnetic drive energy harvester based on adaptive control according to claim 1, characterized in that, the second permanent magnet mounting member is set as the variable lift unit, and the first permanent magnet mounting member is fixed on the outer periphery of the linear guide rod. The coil is connected to the spiral mounting belt of the second permanent magnet mounting member.

3. The magnetic drive energy harvester based on adaptive control according to claim 2, characterized in that, the permanent magnet generator stator includes: A first generating permanent magnet, the first generating permanent magnet is arranged on the upper surface of the base through a first spacer block. One side of the first generating permanent magnet is set as a first arc surface; A second power generation permanent magnet, which is arranged on the upper surface of the base through a second spacer block. The second power generation permanent magnet is arranged opposite to the first power generation permanent magnet, and the magnetic poles of the second power generation permanent magnet and the first power generation permanent magnet are arranged in opposite directions; a second arc surface is arranged on the side of the second power generation permanent magnet opposite to the first power generation permanent magnet, and the coil is located between the first arc surface and the second arc surface.

4. The adaptive control-based magnetic drive energy harvester according to claim 2 or 3, wherein, the installation belt telescopic mechanism includes: flange plates, which are slidably installed on the upper surface of the base through flange seats; there are two flange plates, and the two flange plates are arranged opposite to each other. Both ends of the straight motion guide rod penetrate through the two flange plates respectively, and both ends of the spiral installation belt are rotatably connected to one of the flange plates through rotating bearings; a telescopic drive, which is connected to the flange seat to drive the two flange seats to approach or move away from each other; the telescopic drive is communicatively connected to the sensor component.

5. The adaptive control-based magnetic drive energy harvester according to claim 4, wherein, a sliding groove parallel to the straight motion guide rod is formed on the base, and a sliding block slidably matched with the sliding groove is arranged on the flange seat.

6. The adaptive control-based magnetic drive energy harvester according to claim 4, wherein, the straight motion guide rod includes a first section guide rod, a second section guide rod and a third section guide rod which are sequentially connected. The first permanent magnet mounting member is fixed to the second section guide rod; the first section guide rod and the third section guide rod are respectively slidably matched with the two flange plates.

7. The adaptive control-based magnetic drive energy harvester according to claim 6, wherein, both the first section guide rod and the third section guide rod are slidably matched with the corresponding flange plates through linear bearings; the linear bearings are installed on the flange plates.

8. The adaptive control-based magnetic drive energy harvester according to claim 2 or 3, wherein, the second permanent magnet is a cylindrical permanent magnet; a plurality of the cylindrical permanent magnets are discretely distributed on the spiral installation belt.

9. The adaptive control-based magnetic drive energy harvester according to claim 8, wherein, after the spiral installation belt is unfolded, it forms a rectangular belt-like structure, and two columns of the second permanent magnets are arranged on the outer surface of the rectangular belt-like structure along its length direction.

10. The adaptive control-based magnetic drive energy harvester according to claim 1, wherein, both the first permanent magnet mounting member and the second permanent magnet mounting member are arranged as the variable lift units.

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