Electromagnetic piezoelectric composite wave energy collecting mechanism

Abstract

The utility model discloses an electromagnetic piezoelectric combined type wave energy collecting mechanism which comprises a spherical shell and a base plate fixed to the bottom of the spherical shell, an induction coil is installed on the upper surface of the base plate, a plurality of bicrystal piezoelectric plates are installed at the edge of the top end of the base plate on the outer side of the induction coil, an upper hollow shell is fixed to the top wall of the spherical shell, and a lower hollow shell is fixed to the top wall of the upper hollow shell. And an energy storage unit is installed in the upper hollow shell, three equidistant protruding bases are fixed to the edge position of the bottom end of the upper hollow shell, and swing arms are rotationally installed on the outer walls of one sides of the protruding bases. According to the utility model, the permanent magnet disc stably swings relative to the induction coil, the action amount of ineffective swinging of the permanent magnet disc is reduced, and the relative position and speed between the permanent magnet disc and the induction coil can be kept stable.

Description

Technical Field

[0001] The utility model relates to the technical field of energy collection equipment, in particular to an electromagnetic piezoelectric composite wave energy collection mechanism. Background Art

[0002] Electromagnetic piezoelectric composite wave energy harvesting is a device that uses wave energy to convert mechanical energy into electrical energy. It combines electromagnetic induction and piezoelectric effect, and can efficiently capture the energy of ocean waves. The device is usually composed of the following parts: wave energy harvesting device, electromagnetic generator, piezoelectric generator and electronic control system. The wave energy harvesting device is the core part of the system, which is usually composed of a buoy, a floating arm and a connecting device. The buoy moves up and down with the sea surface through the floating arm, and the connecting device transmits this movement to the electromagnetic generator and the piezoelectric generator. The electromagnetic generator uses the principle of electromagnetic induction to convert mechanical energy into electrical energy. When the buoy moves up and down, the connecting device drives the conductor in the generator to move in the magnetic field, generating an induced current, thereby realizing energy conversion, and the piezoelectric generator uses the piezoelectric effect to convert mechanical energy into electrical energy. When the wave acts on the buoy, the piezoelectric material on the buoy will deform, resulting in uneven charge distribution, forming a potential difference, and ultimately generating electrical energy;

[0003] For example, an omnidirectional piezoelectric electromagnetic composite wave energy harvesting mechanism disclosed in the authorization announcement number CN211777790U has a spherical shell divided into an upper shell and a lower shell, and the openings of the upper shell and the lower shell are provided with mutually matching threads; the inner top surface of the upper shell is a plane with four threaded holes, the upper parts of the left ball joint seat and the right ball joint seat are flat plates with a pair of screw hole structures, and the lower parts have hemispherical cavities, the upper part of the pendulum swing rod is a spherical body, and the lower part is a round cake-shaped structure, the lower surface of the round cake-shaped structure is inlaid with a circular permanent magnet, and when the mechanism rises and falls with the waves, the pendulum swings back and forth with the waves , the magnet moves relative to the copper coil below. According to Faraday's law of electromagnetic induction, the magnetic flux in the coil changes to generate an electrical signal. However, in this technical solution, the magnet and the pendulum are movably installed in the form of ball heads at the bottom of the left and right ball joints. At this time, the magnet and the pendulum swing too actively under the impact of the waves, and the swinging posture is uncontrollable, so that a large number of movements made by the magnet will not produce electromagnetic induction with the copper coil, that is, part of the mechanical energy will be consumed in the ineffective swinging process and cannot be effectively converted into electrical energy, which will reduce the overall efficiency of the wave energy collection system and affect the effective utilization of energy. Utility Model Content

[0004] The purpose of the utility model is to provide an electromagnetic-piezoelectric composite wave energy collection mechanism, in which three movable and rotatable swing arms are added to the top wall of the spherical shell, and the swing range of the swing arms is controlled by an elastic telescopic structure. The ends of the swing arms are installed with a lower support seat and a permanent magnetic disk through a double-link support arm, so that the permanent magnetic disk can swing stably relative to the induction coil, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an electromagnetic piezoelectric composite wave energy collection mechanism, comprising a spherical shell and a chassis fixed at the bottom of the spherical shell, an induction coil is installed on the upper surface of the chassis, a plurality of bi-crystal piezoelectric sheets are installed at the top edge of the chassis outside the induction coil, an upper hollow shell is fixed on the top wall of the spherical shell, and an energy storage unit is installed inside the upper hollow shell, three equidistant raised seats are fixed at the edge of the bottom end of the upper hollow shell, a swing arm is rotatably installed on the outer wall of one side of the raised seat, a double-link support arm is hinged at one end of the swing arm away from the upper hollow shell, an elastic telescopic structure for resetting the swing arm is arranged on the outer wall of one side of the raised seat, a lower support seat is hingedly installed at the bottom ends of the three double-link support arms, and a permanent magnetic disk is installed at the bottom end of the lower support seat through a ball head.

[0006] Preferably, a flat surface is provided at the top of the spherical shell.

[0007] Preferably, a conical hollow buoy is fixed to the bottom end of the spherical shell, and the conical hollow buoy is made of hard plastic material.

[0008] Preferably, an arc surface is provided on the outer wall of the bimorph piezoelectric sheet, the center of the arc surface is concentric with the center of the bottom plate, and seven bimorph piezoelectric sheets are provided.

[0009] Preferably, the double-link support arm comprises a first link and a second link hingedly mounted on both sides of the bottom end of the swing arm, and the ends of the first link and the second link away from the swing arm are hingedly connected to the top end of the lower support seat.

[0010] Preferably, the elastic telescopic structure includes a damping shock absorber hingedly mounted on an outer wall of one side of the raised seat, and a protruding foot fixed on one side of the top end of the swing arm, the piston rod end of the damping shock absorber is hingedly connected to an outer wall of one side of the raised seat, and the cylinder end of the damping shock absorber is hingedly connected to an outer wall of one side of the protruding foot.

[0011] Compared with the prior art, the beneficial effect of the utility model is that the electromagnetic piezoelectric composite wave energy collection mechanism is provided with an elastic telescopic structure, a double-link support arm and other structures that cooperate with each other. During the swinging of the lower support seat and the permanent magnetic disk, the double-link support arm, the swing arm and the elastic telescopic structure always control the swinging range of the lower support seat, which can prevent the lower support seat and the permanent magnetic disk from swinging too actively when impacted by waves, thereby avoiding energy loss and damage to the equipment, and making the permanent magnetic disk swing stably relative to the induction coil, reducing the amount of invalid swinging of the permanent magnetic disk, and ensuring that the relative position and speed between the permanent magnetic disk and the induction coil remain stable, thereby improving the power production efficiency and output stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0013] Figure 2 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0014] Figure 3 It is a three-dimensional cross-sectional structural schematic diagram of the utility model;

[0015] Figure 4 It is a three-dimensional cross-sectional structural schematic diagram of the utility model;

[0016] In the figure: 1. spherical shell; 101. plane part; 2. conical hollow buoy; 3. chassis; 4. bimorph piezoelectric sheet; 5. induction coil; 6. upper hollow shell; 7. energy storage unit; 8. raised seat; 9. swing arm; 10. double-link support arm; 1001. first link; 1002. second link; 11. lower support seat; 12. permanent magnetic disk; 13. elastic telescopic structure; 1301. damping shock absorber; 1302. raised foot. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-4 The utility model provides an embodiment: an electromagnetic piezoelectric composite wave energy collection mechanism, comprising a spherical shell 1 and a chassis 3 fixed at the bottom of the spherical shell 1, an induction coil 5 is installed on the upper surface of the chassis 3, and a plane portion 101 is provided at the top of the spherical shell 1;

[0019] Several bimorph piezoelectric sheets 4 are installed at the top edge of the chassis 3 outside the induction coil 5. The outer wall of the bimorph piezoelectric sheet 4 is provided with an arc surface, the center of the arc surface is concentric with the center of the chassis 3, and there are seven bimorph piezoelectric sheets 4;

[0020] An upper hollow shell 6 is fixed to the top wall of the spherical shell 1, and an energy storage unit 7 is installed inside the upper hollow shell 6. Three equidistant raised seats 8 are fixed at the edge position of the bottom end of the upper hollow shell 6. A swing arm 9 is rotatably installed on the outer wall of one side of the raised seat 8. A double-link support arm 10 is hingedly connected to the end of the swing arm 9 away from the upper hollow shell 6. An elastic telescopic structure 13 for resetting the swing arm 9 is provided on the outer wall of one side of the raised seat 8. A lower support seat 11 is hingedly installed at the bottom ends of the three double-link support arms 10. A permanent magnetic disk 12 is installed at the bottom end of the lower support seat 11 through a ball head.

[0021] The energy storage unit 7 may be a battery, a supercapacitor or other energy storage device, which stores the electric energy generated by the piezoelectric effect so as to release it when needed. The electric energy stored in the energy storage unit 7 may be processed by an inverter or other electronic devices to obtain a stable electric energy output, which may be used to drive electric equipment, supply power to nearby facilities or be transmitted to a power grid;

[0022] A conical hollow buoy 2 is fixed to the bottom of the spherical shell 1. The conical hollow buoy 2 is made of hard plastic material. The design of the conical hollow buoy 2 can provide additional buoyancy, which helps to support the entire spherical shell 1. Under the impact of waves, the conical hollow buoy 2 can stabilize the spherical shell 1 and reduce the inversion and tipping of the spherical shell 1. The hard plastic material usually has good weather resistance and corrosion resistance, and can be used in a marine environment for a long time without being easily damaged.

[0023] The double-link support arm 10 includes a first link 1001 and a second link 1002 hingedly mounted on both sides of the bottom end of the swing arm 9. The ends of the first link 1001 and the second link 1002 away from the swing arm 9 are hinged to each other with the top of the lower support seat 11. During the swinging of the lower support seat 11 and the permanent magnetic disk 12, the lower support seat 11 will drive the double-link support arm 10 and the swing arm 9 to swing. During this process, the two ends of the first link 1001 and the second link 1002 are hinged to the top of the lower support seat 11 and the end of the swing arm 9, respectively, so that the swing arm 9 rotates and the elastic telescopic structure 13 is deformed. By controlling the rotation range of the permanent magnetic disk 12 through the three double-link support arms 10, the permanent magnetic disk 12 can produce stable swings under the impact of waves, avoiding excessive swinging and energy loss.

[0024] The elastic telescopic structure 13 includes a damping shock absorber 1301 hingedly mounted on the outer wall of one side of the raised seat 8, and a convex foot 1302 fixed on one side of the top end of the swing arm 9. The piston rod end of the damping shock absorber 1301 is hinged to the outer wall of one side of the raised seat 8, and the cylinder end of the damping shock absorber 1301 is hinged to the outer wall of one side of the convex foot 1302. Through the design of the damping shock absorber 1301 and the convex foot 1302, the swing amplitude of the swing arm 9 and the double-link support arm 10 can be effectively controlled, and the swing amplitude of components such as the lower support seat 11 and the permanent magnetic disk 12 can be ensured to be within an appropriate range, avoiding the influence of excessive or small swing on the system, and making the swing of the permanent magnetic disk 12 more stable and regular, thereby improving the stability of the relative position and speed between the permanent magnetic disk 12 and the bimorph piezoelectric film 4 and the induction coil 5.

[0025] When the embodiment of the present application is in use, first, the device floats on the sea level through the conical hollow buoy 2. When the waves hit the spherical shell 1, due to the instability of the spherical shell 1 and the conical hollow buoy 2, the lower support seat 11 and the permanent magnetic disk 12 will swing relative to the induction coil 5 under the action of gravity, the tension of the double-link support arm 10 and the impact force of the waves. This swing is driven by the impact force of the waves, thereby converting the mechanical energy of the waves into kinetic energy of the permanent magnetic disk 12. In this process, the magnetic flux of the induction coil 5 changes to generate an electrical signal, and when the permanent magnetic disk 12 swings to a certain extent, it will hit the bimorph piezoelectric sheet 4. The bimorph piezoelectric sheet 4 is a piezoelectric material. When subjected to external force, it will produce uneven charge distribution, thereby generating an electric potential difference, i.e., the bimorph piezoelectric sheet 4. The electric sheet 4 will produce a piezoelectric effect, converting mechanical energy into electrical energy, which will be stored in the energy storage unit 7 for subsequent use. During the swinging of the lower support seat 11 and the permanent magnetic disk 12, the double-link support arm 10, the swing arm 9, and the elastic telescopic structure 13 always control the swinging range of the lower support seat 11, which can prevent the lower support seat 11 and the permanent magnetic disk 12 from swinging too actively when impacted by waves, thereby avoiding energy loss and damage to equipment, and allowing the permanent magnetic disk 12 to swing stably relative to the induction coil 5, reducing the amount of invalid swinging of the permanent magnetic disk 12, and ensuring that the relative position and speed between the permanent magnetic disk 12 and the induction coil 5 remain stable, thereby improving the power production efficiency and output stability, and increasing the generation of power.

Claims

1. An electromagnetic piezoelectric composite wave energy collection mechanism, characterized in that: The invention comprises a spherical shell (1) and a chassis (3) fixed at the bottom of the spherical shell (1), wherein an induction coil (5) is installed on the upper surface of the chassis (3), and a plurality of bimorph piezoelectric sheets (4) are installed at the top edge of the chassis (3) outside the induction coil (5), an upper hollow shell (6) is fixed on the top wall of the spherical shell (1), and an energy storage unit (7) is installed inside the upper hollow shell (6), and three equidistant protrusions (8) are fixed at the edge of the bottom end of the upper hollow shell (6). ), a swing arm (9) is rotatably mounted on the outer wall of one side of the raised seat (8), one end of the swing arm (9) away from the upper hollow shell (6) is hingedly connected to a double-link support arm (10), an elastic telescopic structure (13) for resetting the swing arm (9) is provided on the outer wall of one side of the raised seat (8), a lower support seat (11) is hingedly mounted at the bottom ends of the three double-link support arms (10), and a permanent magnetic disk (12) is mounted at the bottom end of the lower support seat (11) via a ball head.

2. The electromagnetic-piezoelectric composite wave energy collection mechanism according to claim 1, characterized in that: The top end of the spherical shell (1) is provided with a flat surface portion (101).

3. The electromagnetic-piezoelectric composite wave energy collection mechanism according to claim 1, characterized in that: A conical hollow buoy (2) is fixed to the bottom end of the spherical shell (1), and the conical hollow buoy (2) is made of hard plastic material.

4. The electromagnetic-piezoelectric composite wave energy collection mechanism according to claim 1, characterized in that: An arc surface is provided on the outer wall of the bimorph piezoelectric sheet (4), the center of the arc surface is concentric with the center of the bottom plate (3), and seven bimorph piezoelectric sheets (4) are provided.

5. The electromagnetic-piezoelectric composite wave energy collection mechanism according to claim 1, characterized in that: The double-link support arm (10) comprises a first link (1001) and a second link (1002) which are hingedly mounted on both sides of the bottom end of the swing arm (9); the ends of the first link (1001) and the second link (1002) away from the swing arm (9) are hingedly connected to the top end of the lower support seat (11).

6. The electromagnetic-piezoelectric composite wave energy collection mechanism according to claim 1, characterized in that: The elastic telescopic structure (13) comprises a damping shock absorber (1301) hingedly mounted on an outer wall of one side of the raised seat (8), and a convex foot (1302) fixed to one side of the top end of the swing arm (9), the piston rod end of the damping shock absorber (1301) being hingedly connected to an outer wall of one side of the raised seat (8), and the cylinder end of the damping shock absorber (1301) being hingedly connected to an outer wall of one side of the convex foot (1302).

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