Multidirectional electromagnetic piezoelectric composite wave energy collector and wave energy collecting method thereof

Abstract

The invention discloses a multidirectional electromagnetic piezoelectric composite wave energy collector and a wave energy collecting method thereof. The multidirectional electromagnetic piezoelectric composite wave energy collector comprises a hollow box-shaped light fixed shell, and a forced rotation unit, a piezoelectric unit, a crankshaft connecting rod unit and an electromagnetic unit are arranged in the light fixed shell. The forced rotation unit comprises a cylindrical cam, a connecting rod and a mass pendulum ball, and the top of the mass pendulum ball protrudes out of the light fixed shell; the piezoelectric unit comprises a driven piece sleeve, a piezoelectric plate group and collision teeth; the crankshaft connecting rod unit comprises a connecting rod and a crankshaft; the electromagnetic unit comprises a neodymium iron boron permanent magnet group and a coil. Through the structural design, the size is reduced while the energy collection efficiency is improved, and the ocean robot achieves self-energy supply.

Description

Technical Field

[0001] The present invention relates to the technical field of wave energy power generation, and more specifically to a multi-directional electromagnetic piezoelectric composite wave energy collector. Background Art

[0002] The ocean occupies two-thirds of the earth's surface, and the energy it contains is considerable, mainly including tidal energy, wave energy, temperature difference energy, salinity difference energy, etc. Wave energy, as a green and clean energy, is the ocean energy with the greatest theoretical and practical development potential. Its theoretically usable amount is 3×10 12 W, the actual exploitable volume is 3×10 11 W. Therefore, wave energy collection is of great significance and will not affect the ecological environment. As marine robots are widely used in marine exploration, ecological monitoring, geological exploration and other fields, people have put forward urgent requirements for their endurance. Robots that use batteries to provide electricity need to be recycled and charged in time. Solar energy collection will be affected by the weather, and there are problems such as large size, low power generation efficiency, and unstable power supply. Wave energy, as a kind of energy that exists in the ocean at all times, can be unaffected by time and space, so collecting wave energy provides a solution to the endurance problem of marine robots. Therefore, under the premise of not affecting the ecological environment, it is an urgent problem for technicians in this field to study a multi-directional wave energy collector that can power marine robots. Summary of the invention

[0003] In view of this, the purpose of the present invention is to design a multi-directional electromagnetic piezoelectric composite wave energy collector to solve the problems of large size, low efficiency and difficulty in self-powering of existing marine robot power supply units.

[0004] To achieve the above-mentioned object, the technical solution of the present invention is as follows: a multi-directional electromagnetic piezoelectric composite wave energy collector, comprising a hollow box-shaped lightweight fixed shell, wherein a forced rotation unit, a piezoelectric unit, a crankshaft connecting rod unit and an electromagnetic unit are arranged inside the lightweight fixed shell;

[0005] The forced rotation unit comprises a cylindrical cam, the lower end of which is rotatably mounted inside the light fixed housing, the upper end of which is rigidly connected to a connecting rod, the other end of which protrudes from the light fixed housing and is rigidly connected to a mass pendulum ball located directly above the light fixed housing;

[0006] It also includes a follower column adjacent to the cylindrical cam, the follower column is vertically fixed inside the lightweight fixed housing, a follower sleeve is sleeved on the follower column, and a cam follower is rotatably mounted on the outer surface of the follower sleeve;

[0007] A top is vertically arranged on the outer circumferential surface of the cam follower, and a closed curved groove is arranged on the outer circumferential surface of the cylindrical cam around the outer circumference of the cylindrical cam. The top is embedded in the curved groove of the cylindrical cam. The cylindrical cam rotates to drive the cam follower and the follower sleeve to reciprocate along the height direction of the follower column.

[0008] The piezoelectric unit includes a piezoelectric sheet group mounted on the driven piece sleeve, and the piezoelectric sheet group moves with the movement of the driven piece sleeve, and a rectangular protruding collision tooth adapted to the piezoelectric sheet group is arranged inside the lightweight fixed shell, and the rectangular protruding collision tooth collides with the piezoelectric sheet group and deforms it, thereby utilizing the positive piezoelectric effect to convert mechanical energy into electrical energy;

[0009] The crankshaft connecting rod unit comprises a connecting rod and a crankshaft, one end of the connecting rod is connected to the driven member sleeve through a cylindrical pin, and the other end of the connecting rod is movably connected to the crankshaft. Two balancing blocks are arranged at the bottom of the lightweight fixed housing, and the two balancing blocks jointly limit the axial displacement of the connecting rod and the crankshaft;

[0010] The electromagnetic unit includes a NdFeB permanent magnet group, and two forks are arranged at the main journal end of the crankshaft. The NdFeB permanent magnet groups are correspondingly arranged on the two forks and are rotatably connected to the balance block. Coils corresponding to the two NdFeB permanent magnet groups are arranged on both sides of the interior of the lightweight fixed shell. When the NdFeB permanent magnet group rotates, the coils will cut the magnetic lines of force and convert mechanical energy into electrical energy.

[0011] Preferably, the lightweight fixed shell is made of polymethyl methacrylate.

[0012] Preferably, an extension rod is vertically arranged on the outer circumferential surface of the driven member sleeve, and one end of the extension rod is connected to the connecting rod through a cylindrical pin.

[0013] Preferably, the end of the piezoelectric sheet group penetrates into the gap of the collision teeth but does not touch the edge of the lightweight fixed housing, and performs linear reciprocating motion together with the driven piece sleeve.

[0014] Preferably, the first coil and the second coil are mounted on both sides of the inner side wall of the lightweight fixed housing, corresponding to the two bifurcated positions on the main journal end of the crankshaft.

[0015] Preferably, relative rotation can occur between the cam follower and the follower sleeve.

[0016] Preferably, the curved groove on the cylindrical cam can achieve a frequency-upgrading effect by designing the period of the curved function.

[0017] Preferably, the magnetic poles of the permanent magnets in the first NdFeB permanent magnet group and the second NdFeB permanent magnet group facing the coil are placed in the order of one south and one north.

[0018] Preferably, the energy storage unit is installed on the inner wall of the lightweight fixed shell, and the energy storage unit includes a bridge full-wave rectifier, a filter capacitor, a voltage-stabilizing resistor, a voltage-stabilizing diode and a battery; the electric energy of the piezoelectric unit and the electromagnetic unit is generated and stored in the energy storage unit after being rectified, filtered and stabilized.

[0019] The present invention also provides a wave energy collection method, comprising:

[0020] When waves hit the wave energy collector, the whole structure tilts and the mass pendulum deflects due to gravity;

[0021] When the mass pendulum deflects, the cylindrical cam is driven to rotate through the connecting rod, and the cam follower matched with it converts the rotational motion into linear reciprocating motion, and at the same time drives the piezoelectric sheet group on the follower sleeve to collide with the collision tooth, so that the piezoelectric sheet generates current;

[0022] The driven member sleeve transmits its own linear reciprocating motion to the crankshaft through the connecting rod, and the crankshaft rotates, and the NdFeB permanent magnet on the fork moves relative to the coil, cutting the magnetic flux lines to generate current;

[0023] The NdFeB permanent magnet also plays the role of a flywheel in the mechanism, and can help the crankshaft cross the dead point through inertia, so that the crankshaft rotates unidirectionally, thereby improving the efficiency of electromagnetic energy collection.

[0024] It can be seen from the above technical solution that, compared with the prior art, the beneficial effects of the present invention are:

[0025] The solution of the present application utilizes a cylindrical cam, a crankshaft connecting rod mechanism and two energy conversion excitations to achieve an effective combination of piezoelectric power generation and electromagnetic power generation, cleverly integrating the frequency-increasing mechanism and the one-way mechanism therein, controlling the volume and weight of the entire wave energy collector, and providing a solution for the self-power supply of marine robots. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0027] Figure 1 The accompanying drawing is a schematic diagram of the internal structure of the present invention.

[0028] Figure 2 The accompanying drawing is a schematic structural diagram of the forced rotation unit of the present invention.

[0029] Figure 3The accompanying drawing is a schematic structural diagram of a multi-pendulum ball forced rotation unit in a second arrangement of the present invention.

[0030] Figure 4 The accompanying drawing is a schematic diagram of the structure in which the piezoelectric sheet in the second arrangement of the present invention is installed on a lightweight fixed housing.

[0031] Figure 5 The accompanying drawing is a schematic structural diagram of a crankshaft of the present invention.

[0032] Figure 6 The accompanying drawing is a schematic structural diagram of the magnetic pole arrangement of the NdFeB magnet of the present invention.

[0033] Figure 7 The accompanying drawing is a schematic structural diagram of the energy storage unit of the present invention.

[0034] In the figure: 1-mass pendulum ball; 2-connecting rod; 3-cylindrical cam; 4-lightweight fixed housing; 5-follower column; 6-collision tooth; 7-piezoelectric sheet group; 8-follower sleeve; 9-cam follower; 10-connecting rod; 11-crankshaft; 12-first NdFeB permanent magnet group; 13-first coil; 14-second NdFeB permanent magnet group; 16-filter capacitor; 17-voltage stabilizing resistor; 18-voltage stabilizing diode; 19-battery; 20-full-wave rectifier; 21-upper piezoelectric ceramic; 22-copper substrate; 23-lower piezoelectric ceramic. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] First embodiment:

[0037] Please refer to the attached Figure 1-7 The multi-directional electromagnetic piezoelectric composite wave energy collector disclosed in the present invention comprises: a hollow box-shaped lightweight fixed shell 4 made of polymethyl methacrylate. A forced rotation unit, a piezoelectric unit, a crankshaft connecting rod unit and an electromagnetic unit are arranged inside the lightweight fixed shell 4.

[0038] The present invention further provides that the forced rotation unit includes a cylindrical cam 3, the lower end of the cylindrical cam 3 is rotatably mounted inside a light fixed housing 4, the upper end of the cylindrical cam 3 is rigidly connected to the long side of a connecting rod 2, the other end of the connecting rod 2 protrudes from the light fixed housing 4 and is rigidly connected to a mass pendulum ball 1 located directly above the light fixed housing 4; when waves impact the wave energy collector, the center of gravity of the overall structure tilts, the mass pendulum ball 1 begins to swing, and as the mass pendulum ball 1 swings, the cylindrical cam 3 rotates relatively, and the curved groove on the cylindrical cam 3 can achieve a frequency-up effect by designing the period of the curve function, and supply energy more efficiently. The forced rotation unit has a compact structure, high transmission efficiency, and stable operation, and can efficiently achieve energy transmission.

[0039] In the second arrangement, the mass pendulum ball is replaced by multiple spherical pendulums with uneven mass distribution, increasing the amplitude of its swing.

[0040] It also includes a follower column 5 adjacent to the cylindrical cam 3, the follower column 5 is vertically fixed inside the lightweight fixed housing 4, a follower sleeve 8 is sleeved on the follower column 5, a cam follower 9 is rotatably mounted on the outer surface of the follower sleeve 8, and the follower sleeve 8 and the cam follower 9 can rotate relative to each other;

[0041] A top is vertically arranged on the outer circumferential surface of the cam follower 9, and a closed curved groove is arranged on the outer circumferential surface of the cylindrical cam 3 around the outer circumference of the cylindrical cam 3. The top is embedded in the curved groove of the cylindrical cam 3. The cylindrical cam 3 rotates to drive the cam follower 9 and the follower sleeve 8 to reciprocate along the height direction of the follower column 5;

[0042] The present invention further provides that the piezoelectric unit includes a piezoelectric sheet group 7 installed on a driven member sleeve 8, which is composed of a total of 4 piezoelectric sheets, and the piezoelectric sheet group 7 moves with the movement of the driven member sleeve, and a rectangular protruding collision tooth 6 adapted to the piezoelectric sheet group is arranged inside the lightweight fixed shell 4, and the rectangular protruding collision tooth 6 collides with the piezoelectric sheet group 7 and deforms it, thereby utilizing the positive piezoelectric effect to convert mechanical energy into electrical energy. The piezoelectric sheet is a series dual-chip structure, and the upper and lower surfaces of the copper substrate are bonded to the piezoelectric ceramic with conductive glue, and the support method selects a cantilever beam support method. The piezoelectric unit has the advantages of high sensitivity, fast response speed, and easy integration. In addition, the piezoelectric structure also has high stability and reliability, and can work for a long time in various environments.

[0043] In the second arrangement, the mounting position of the piezoelectric sheet group and the position of the collision tooth can be interchanged, that is, the piezoelectric sheet group is fixed inside the lightweight fixed housing, and the collision tooth is mounted on the driven member sleeve.

[0044] The present invention further provides that the crankshaft connecting rod unit includes a connecting rod 10 and a crankshaft 11, one end of the connecting rod 10 is connected to the extension rod cylindrical pin vertically arranged on the outer circumferential surface of the driven sleeve 8, and the other end of the connecting rod 10 is movably connected to the crankshaft 11. Two balancing blocks are provided at the bottom of the lightweight fixed shell 4, and the two balancing blocks jointly limit the axial displacement of the connecting rod 10 and the crankshaft 11, so that the crankshaft connecting rod unit can operate more stably and efficiently. The bottom of the lightweight fixed shell 4 is also provided with a notch that matches the shape of the crankshaft 11, and the crankshaft 11 protrudes from the bottom of the lightweight fixed shell 4 through the notch to rotate. The crankshaft connecting rod unit can efficiently transmit energy through a simple structure, and has stability and reliability.

[0045] The present invention further provides that the electromagnetic unit includes a first NdFeB permanent magnet group 12, a second NdFeB permanent magnet group 14, a first coil 13, and a second coil. Two forks are arranged at the main journal end of the crankshaft, and the forks are claw-shaped. The first NdFeB permanent magnet group 12 and the second NdFeB permanent magnet group 14 are arranged on the two claw-shaped forks in the order of the permanent magnets facing the magnetic poles of the coils, one south and one north, and are rotatably connected with the balance block. The first coil 13 and the second coil corresponding to the two NdFeB permanent magnet groups are arranged on both sides of the interior of the lightweight fixed housing 4. When the first NdFeB permanent magnet group 12 and the second NdFeB permanent magnet group 14 rotate, the first coil 13 and the second coil will cut the magnetic flux lines and convert mechanical energy into electrical energy. The electromagnetic unit can achieve voltage conversion and current adjustment by adjusting the turns ratio of the primary coil and the secondary coil, achieving the conversion and transmission of mechanical energy and electromagnetic energy, and reducing energy loss.

[0046] Working principle: When waves hit the wave energy collector, the whole structure tilts, and the mass pendulum 1 deflects under the influence of gravity. When the mass pendulum 1 deflects, it drives the cylindrical cam 3 to rotate through the connecting rod, and the cam follower 9 matched with it converts the rotational motion into linear reciprocating motion. The curved groove covered on the cylindrical cam 3 is a cosine function when unfolded on the plane. There is neither rigid impact nor flexible impact during operation, and its expression is:

[0047]

[0048] At the same time, the piezoelectric sheet group 7 on the driven sleeve 8 is driven to collide with the collision tooth 6, so that the piezoelectric sheet generates current; it should be noted that the piezoelectric effect can be described by the piezoelectric constitutive equation:

[0049]

[0050] Where: σ and δ are strain vectors and stress vectors; E and D are electric field vectors and electric displacement vectors, respectively; s is the elastic coefficient under constant electric field, ε is the dielectric constant under constant stress, t is the forward and inverse piezoelectric effect constant force matrix, the superscript t represents the transpose, and the superscripts E and T represent constants under constant electric field and constant stress.

[0051] The driven member sleeve 8 transmits its own linear reciprocating motion to the crankshaft 11 through the connecting rod 10, and the crankshaft 11 rotates. The first NdFeB permanent magnet group 12 and the second NdFeB permanent magnet group 14 on the claw-shaped fork move relative to the first coil 13 and the second coil, cutting the magnetic flux lines to generate current. It should be noted that the induced electromotive force can be expressed by the following formula:

[0052]

[0053] Where: E is the induced electromotive force generated by cutting the magnetic flux lines, N is the number of coil turns, is the flux change, and Δt is the flux change time.

[0054] The first NdFeB permanent magnet group 12 and the second NdFeB permanent magnet group 14 also play the role of flywheels in the mechanism, and can help the crankshaft 11 cross the dead point through inertia, so that the crankshaft 11 rotates unidirectionally, thereby improving the efficiency of electromagnetic energy collection.

[0055] The multi-directional electromagnetic piezoelectric composite wave energy collector disclosed in the present invention also includes an energy storage unit installed on the inner wall of a lightweight fixed shell 4, wherein the energy storage unit includes a bridge full-wave rectifier 20, wherein one end of the bridge full-wave rectifier 20 is two input ends, and the other end is a positive output end and a negative output end; a filter capacitor 16 is connected in parallel to the output end for smoothing the rectified DC voltage and reducing pulsating ripples; a stabilizing resistor 17 is connected in series to the positive output end of the bridge full-wave rectifier 20 for limiting current or dividing voltage; a stabilizing diode 18 is connected in parallel to the stabilizing resistor 17 for achieving a more stable voltage output; the positive output end and the negative output end are respectively connected to the positive and negative poles of a battery 19 for energy storage.

[0056] After the electric energy generated by the piezoelectric unit and the electromagnetic unit is rectified, filtered and stabilized, it is stored in the energy storage unit. When there is excess power supply, the energy storage unit can store electric energy; when there is a peak in power demand or a power outage, the electric energy is released to meet the demand, thereby ensuring the stable operation of the power system and improving the quality of power.

[0057] The wave energy collection method comprises the following steps:

[0058] 1) When the wave hits the wave energy collector, the whole structure tilts and the mass pendulum 1 deflects due to the influence of gravity;

[0059] 2) When the mass pendulum 1 deflects, the cylindrical cam 3 is driven to rotate through the connecting rod 2, and the cam follower 9 matched with it converts the rotational motion into linear reciprocating motion, and at the same time drives the piezoelectric sheet group 7 on the follower sleeve 8 to collide with the collision tooth 6, so that the piezoelectric sheet generates current;

[0060] 3) The driven member sleeve 8 transmits its own linear reciprocating motion to the crankshaft 11 through the connecting rod 10, and the crankshaft 11 performs a rotational motion, and the first NdFeB permanent magnet group 12 and the second NdFeB permanent magnet group 14 on the two claw-shaped forks move relative to the first coil 13 and the second coil, cutting the magnetic flux lines to generate current;

[0061] 4) The NdFeB permanent magnet also acts as a flywheel in the mechanism, and can help the crankshaft 11 cross the dead point through inertia, making the crankshaft 11 rotate unidirectionally, thereby improving the efficiency of electromagnetic energy collection.

[0062] In practical applications, the device is mounted on a robot. As the robot works underwater, the device tilts, triggering the power generation device. The robot can directly obtain energy from the waves, thereby achieving self-power supply. Therefore, the present invention greatly prolongs the robot's endurance and operating range. Its small size and efficient energy conversion reduce the robot's dependence on external energy, thereby reducing costs.

[0063] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0064] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A multi-directional electromagnetic piezoelectric composite wave energy collector, characterized in that: It comprises a hollow box-shaped lightweight fixed shell, wherein a forced rotation unit, a piezoelectric unit, a crankshaft connecting rod unit and an electromagnetic unit are arranged inside the lightweight fixed shell; The forced rotation unit comprises a cylindrical cam, the lower end of which is rotatably mounted inside the light fixed housing, the upper end of which is rigidly connected to a connecting rod, the other end of which protrudes from the light fixed housing and is rigidly connected to a mass pendulum ball located directly above the light fixed housing; It also includes a follower column adjacent to the cylindrical cam, the follower column is vertically fixed inside the lightweight fixed housing, a follower sleeve is sleeved on the follower column, and a cam follower is rotatably mounted on the outer surface of the follower sleeve; A top is vertically arranged on the outer circumferential surface of the cam follower, and a closed curved groove is arranged on the outer circumferential surface of the cylindrical cam around the outer circumference of the cylindrical cam. The top is embedded in the curved groove of the cylindrical cam. The cylindrical cam rotates to drive the cam follower and the follower sleeve to reciprocate along the height direction of the follower column. The piezoelectric unit includes a piezoelectric sheet group mounted on the driven piece sleeve, and the piezoelectric sheet group moves with the movement of the driven piece sleeve, and a rectangular protruding collision tooth adapted to the piezoelectric sheet group is arranged inside the lightweight fixed shell, and the rectangular protruding collision tooth collides with the piezoelectric sheet group and deforms it, thereby utilizing the positive piezoelectric effect to convert mechanical energy into electrical energy; The crankshaft connecting rod unit comprises a connecting rod and a crankshaft, one end of the connecting rod is connected to the driven member sleeve through a cylindrical pin, and the other end of the connecting rod is movably connected to the crankshaft. Two balancing blocks are arranged at the bottom of the lightweight fixed housing, and the two balancing blocks jointly limit the axial displacement of the connecting rod and the crankshaft; The electromagnetic unit includes a NdFeB permanent magnet group, and two forks are arranged at the main journal end of the crankshaft. The NdFeB permanent magnet groups are correspondingly arranged on the two forks and are rotatably connected to the balance block. Coils corresponding to the two NdFeB permanent magnet groups are arranged on both sides of the interior of the lightweight fixed shell. When the NdFeB permanent magnet group rotates, the coils will cut the magnetic lines of force and convert mechanical energy into electrical energy.

2. The multi-directional electromagnetic piezoelectric composite wave energy collector according to claim 1 is characterized in that: The lightweight fixed shell is made of polymethyl methacrylate.

3. The multi-directional electromagnetic piezoelectric composite wave energy collector according to claim 1 is characterized in that: An extension rod is vertically arranged on the outer circumferential surface of the driven member sleeve, and one end of the extension rod is connected to the connecting rod through a cylindrical pin.

4. The multi-directional electromagnetic piezoelectric composite wave energy collector according to claim 1 is characterized in that: The end of the piezoelectric sheet group penetrates into the gap of the collision teeth but does not touch the edge of the lightweight fixed shell, and performs linear reciprocating motion together with the driven piece sleeve.

5. The multi-directional electromagnetic piezoelectric composite wave energy collector according to claim 1 is characterized in that: The first coil and the second coil are mounted on both sides of the inner side wall of the lightweight fixed housing, corresponding to the two bifurcated positions on the main journal end of the crankshaft.

6. The multi-directional electromagnetic piezoelectric composite wave energy collector according to claim 1 is characterized in that: The cam follower and the follower sleeve can rotate relative to each other.

7. The multi-directional electromagnetic piezoelectric composite wave energy collector according to claim 1 is characterized in that: The curved groove on the cylindrical cam can achieve a frequency-increasing effect by designing the period of the curved function.

8. The multi-directional electromagnetic piezoelectric composite wave energy collector according to claim 1 is characterized in that: The magnetic poles of the permanent magnets in the first NdFeB permanent magnet group and the second NdFeB permanent magnet group facing the coil are placed in a south-to-north order.

9. The multi-directional electromagnetic piezoelectric composite wave energy collector according to claim 1, characterized in that: It also includes an energy storage unit installed on the inner wall of the lightweight fixed shell, and the energy storage unit includes a bridge full-wave rectifier, a filter capacitor, a voltage-stabilizing resistor, a voltage-stabilizing diode and a battery; after the electric energy of the piezoelectric unit and the electromagnetic unit is generated, it is rectified, filtered and stabilized and then stored in the energy storage unit.

10. A wave energy collection method, according to the multi-directional electromagnetic piezoelectric composite wave energy collector according to any one of claims 1 to 9, characterized in that: include: When waves hit the wave energy collector, the whole structure tilts and the mass pendulum deflects due to gravity; When the mass pendulum deflects, the cylindrical cam is driven to rotate through the connecting rod, and the cam follower matched with it converts the rotational motion into linear reciprocating motion, and at the same time drives the piezoelectric sheet group on the follower sleeve to collide with the collision tooth, so that the piezoelectric sheet generates current; The driven member sleeve transmits its own linear reciprocating motion to the crankshaft through the connecting rod, and the crankshaft rotates, and the NdFeB permanent magnet on the fork moves relative to the coil, cutting the magnetic flux lines to generate current; The NdFeB permanent magnet also acts as a flywheel in the mechanism, and can help the crankshaft cross the dead point through inertia, allowing the crankshaft to rotate unidirectionally, thereby improving the efficiency of electromagnetic energy collection.

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