A marine energy converter and a marine energy converter based green energy system

Abstract

The present application provides a marine energy converter and a marine energy converter based green energy system. The marine energy converter comprises: a pendulum system configured to absorb marine energy by resonance to generate a swinging motion; an energy conversion mechanism connected to the pendulum system and configured to convert the bidirectional swinging motion of the pendulum system into a unidirectional rotation; a clutch configured to have a coupled state and a decoupled state, an input end of the clutch receiving the unidirectional rotation; a bidirectional gear meshingly connected with the clutch; an energy storage and release system configured to be connected to an output end of the clutch, store mechanical energy brought by the unidirectional rotation when the clutch is in the coupled state, and release the stored mechanical energy when the clutch is in the decoupled state; a rotary power generator configured to be connected to the energy storage and release system, and be driven to generate electricity when the energy storage and release system releases the mechanical energy.

Description

1 A MARINE ENERGY CONVERTER AND A MARINE ENERGY CONVERTER BASED GREEN ENERGY SYSTEM TECHNICAL FIELD The present application belongs to the field of new energy technology, and specifically relates to a Marine Energy Converter (MEC) and a marine energy converter based green energy system. BACKGROUND As the global demand for clean energy continues to grow, marine energy, as a renewable energy source with huge reserves and environmental friendliness, has received widespread attention. However, traditional marine energy conversion systems have always faced severe technical challenges in converting wave energy into usable electrical energy. Traditional marine energy conversion systems generally suffer from high initial costs and high maintenance costs. Specifically, equipment for marine energy conversion needs to use materials capable of withstanding extreme marine conditions that occur once every hundred years, including hurricane-force winds, waves of more than 15 meters, and strong ocean currents, while also having the ability to efficiently capture energy from small, gentle waves. This dual requirement forces equipment design to adopt over-engineering solutions with large safety margins, thereby greatly increasing manufacturing costs. Moreover, seawater is extremely corrosive; equipment materials must be marine-grade stainless steel, specialized composites, or expensive protective coatings, which further increases the investment scale of the system. More notably, marine biofouling (attachment of organisms such as barnacles and algae) significantly reduces the operating efficiency of the equipment, so the system must also be equipped with special anti-biofouling devices, which adds additional maintenance burden. In the past several decades, overtopping devices, oscillating water columns, and point absorbers have become the three main technical routes for building marine energy conversion systems. Although researchers have made significant progress in materials HK 30137247 A 2 that resist storms, corrosion, and biofouling, these mainstream designs still share a fatal flaw: most designs still allow the core mechanical components to come into direct contact with seawater. Due to the corrosive effect of seawater and the attachment of marine organisms, those mechanical parts exposed to the marine environment require frequent maintenance and replacement, leading to persistently high maintenance costs of the system, which seriously affects the economic viability of marine energy conversion technology. Therefore, how to effectively reduce the maintenance cost of marine energy conversion systems so that they become economically competitive in commercial applications has become a core technical problem to be solved urgently in this field. SUMMARY The purpose of the embodiments of the present application is to provide a marine energy converter and a marine energy converter based green energy system, so as to reduce the maintenance cost of the marine energy conversion system, while improving the energy conversion efficiency and achieving efficient utilization of marine energy. In order to achieve the above purpose, a first aspect of the present application provides a marine energy converter, comprising: a pendulum system configured to absorb marine energy by resonance to generate a swinging motion; an energy conversion mechanism connected to the pendulum system and configured to convert the bidirectional swinging motion of the pendulum system into a unidirectional rotation; a clutch configured to have a coupled state and a decoupled state, an input end of the clutch receiving the unidirectional rotation; a bidirectional gear meshingly connected with the clutch; an energy storage and release system configured to be connected to an output end of the clutch, store mechanical energy brought by the unidirectional rotation when the clutch is in the coupled state, and release the stored mechanical energy when the clutch is in the decoupled state; a rotary power generator configured to be connected to the energy storage and release system, and be driven to generate electricity when the energy storage and release system releases the mechanical energy. HK 30137247 A 3 In an embodiment of the present application, the pendulum system comprises: a pendulum weight, a pendulum arm, and a pendulum shaft; the pendulum weight is fixed to one end of the pendulum arm; the other end of the pendulum arm is fixed to the pendulum shaft, so as to convert the swinging motion into a rotational torque applied to the pendulum shaft. In an embodiment of the present application, the energy conversion mechanism comprises a pendulum gearbox and a first uni-directional gear and a second uni-directional gear; the pendulum gearbox has an input end and an output end, the input end is connected to the pendulum system, and the output end drives the first uni-directional gear and the second uni-directional gear to convert the bidirectional swinging motion into a unidirectional rotation. In an embodiment of the present application, the clutch is an intermittent gear structure having a missing tooth and slope portion, and the clutch alternately switches between the coupled state and the decoupled state with the bidirectional gear within one rotation cycle. In an embodiment of the present application, the energy storage and release system comprises a winding shaft, a winding gearbox, a winding barrel, a wire, and a power wire box; the winding shaft is connected between the bidirectional gear and the winding gearbox; the winding gearbox is connected to the winding barrel for amplifying the gear ratio and driving the winding barrel to rotate; the surface of the winding barrel is designed with special grooves for winding the wire; one end of the wire is connected to the winding barrel, and the other end is connected to the power wire box; the power wire box is used for storing mechanical potential energy and releasing energy. In an embodiment of the present application, the marine energy converter comprises an output system, the output system comprising a third uni-directional gear, an output shaft, and an output gearbox; the third uni-directional gear is arranged between the power wire box and the output shaft to ensure that energy can only be transmitted unidirectionally from the power wire box to the output shaft; the output shaft is connected between the third uni-directional gear and the output gearbox for HK 30137247 A 4 transmitting rotational motion; the output gearbox further amplifies the gear ratio so that the rotary power generator operates at an optimal efficiency point. In an embodiment of the present application, the marine energy converter comprises an electric energy processing system, the electric energy processing system comprising a current sensor, a voltage sensor, a regulator, a charger, and a battery; the current sensor and the voltage sensor are configured to monitor in real time the current and voltage parameters of the power generation system; the regulator is connected to the rotary power generator for performing voltage stabilization and current stabilization processing on the raw electric energy output by the rotary power generator; the charger is connected to the regulator for controlling the charging process to ensure safe and efficient charging of the battery; the battery is connected to the charger for storing the electric energy converted from marine energy. In an embodiment of the present application, the marine energy converter comprises a control system, the control system comprising a microprocessor and a 4G VPN router; the microprocessor is configured to receive sensor data collected by the current sensor and the voltage sensor, process the sensor data, and send it to the 4G VPN router; the 4G VPN router is configured to establish a VPN tunnel over a 4G-LTE network to provide network connectivity. In an embodiment of the present application, the MEC converts and stores marine energy (including the wave energy), for example, with a low arrival period of 3-6 seconds, into mechanical potential energy, and subsequently generates energy pulse by the clutch, which in turn produces electricity pulse for storage in a battery. In an embodiment of the present application, sea tidal wave is one of the sources of the marine energy. In an embodiment of the present application, the MEC absorbs the marine energy (for example the wave energy) through the pendulum system via resonance and store it into the power spring when the clutch is engaged (or in coupled state). Subsequently, when the clutch is disengaged (or in decoupled state), the energy absorbed and stored in the power spring is released to generate energy pulse, which in turn produces electricity pulse for storage in a battery. HK 30137247 A 5 A second aspect of the present application provides a marine energy converter based green energy system, comprising: the marine energy converter (MEC) according to any one of embodiments of the present application, an MEC IoT server, MEC IoT server software, and a user terminal, wherein the MEC IoT server is configured to receive sensor data from the marine energy converter, and send a control instruction to the marine energy converter according to a preset rule or a user instruction; the MEC IoT server software is configured with a web application and a database for displaying real-time and historical sensor data received from the marine energy converter; the user terminal is configured to receive a user’s control instruction to adjust an operating parameter of the marine energy converter. One embodiment of the above application has the following advantages or beneficial effects: because the pendulum is used to absorb marine energy by resonance, the main components are completely encapsulated inside the marine energy converter and are not in direct contact with sea water, thus maintenance caused by corrosive sea water and biofouling is minimized, significantly extending the service life of the equipment; because the winding barrel cooperates with pulse-based electricity generation, it can capture energy from small and gentle waves in an efficient and effective manner, without the need for over-engineering to withstand extreme storm events, thereby reducing the initial cost of the equipment; because the clutch achieves zero-collision when coupled and zero-overhead when decoupled, the energy conversion efficiency is significantly improved; because the microprocessor is connected to the MEC IoT server via VPN over a 4G-LTE network, the system is protected from cyberattacks, can track in real time the generated electric energy and sensor data, and is convenient for remote management and optimization; because each marine energy converter is configured with a unique VPN IP address for accurately identifying the data source in the server, the MEC IoT server software and the user terminal can adjust the operating parameters of each marine energy converter in real time to optimize the efficiency and effectiveness of energy conversion. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic structural view of the mechanical structure of a marine energy converter according to an embodiment of the present application. HK 30137247 A 6 Fig. 2 is a schematic view of the overall architecture of a marine energy converter based green energy system according to an embodiment of the present application. Reference numerals: 1 – pendulum weight; 2 – pendulum arm; 3 – pendulum shaft; 4 – pendulum gearbox; 5 – first uni-directional gear; 6 – second uni-directional gear; 7 – clutch; 8 – bidirectional gear; 9 – winding shaft; 10 – winding gearbox; 11 – winding barrel; 12 – wire; 13 – power wire box; 14 – third uni-directional gear; 15 – output shaft; 16 – output gearbox; 17 – rotary power generator. DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the drawings are exemplary, intended to explain the present application and should not be construed as limiting the present application. As shown in Fig. 1, the marine energy converter according to an embodiment of the present application is a single device whose entire mechanical structure is completely encapsulated inside the device housing, without direct contact with seawater and without exposure to the marine environment. As shown in Fig. 1, the marine energy converter comprises a pendulum weight 1, a pendulum arm 2, a pendulum shaft 3, a pendulum gearbox 4, a first uni-directional gear 5, a second uni-directional gear 6, a clutch 7, a bidirectional gear 8, a winding shaft 9, a winding gearbox 10, a winding barrel 11, a wire 12, a power wire box 13, a third uni-directional gear 14, an output shaft 15, an output gearbox 16, and a rotary power generator 17. The above components are fixedly mounted at preset mounting positions inside the device by means of bearings, key connections, bolted connections, etc., forming a complete energy conversion transmission chain. In one or more embodiments, the pendulum weight 1 is fixed to one end of the pendulum arm 2. The material of the pendulum weight 1 is a high-density metal to obtain sufficient mass to absorb wave energy by resonance. The geometry of the pendulum weight 1 is designed to be streamlined or blunt-nosed to reduce resistance HK 30137247 A 7 and turbulence during motion in water, while being able to effectively respond to the reciprocating motion of waves. The working principle of the pendulum weight 1 absorbing wave energy by resonance is as follows: when the arrival period of waves is close to the natural frequency of the pendulum system, the excitation effect of the waves on the pendulum system is significantly enhanced, the pendulum system enters a resonance state, and the pendulum weight 1 swings with the largest amplitude, thereby maximizing the capture efficiency of wave energy. In one or more embodiments, the natural frequency of the pendulum system is designed to match waves with a low arrival period of 3-6 seconds, so that the system achieves efficient energy capture under common low-to-moderate intensity wave conditions. In one or more embodiments, the pendulum arm 2 is a rigid link structure, one end of which is fixedly connected to the pendulum weight 1, and the other end of which is fixedly connected to the pendulum shaft 3. The length of the pendulum arm 2 is determined according to the overall design parameters of the pendulum system; the choice of its length affects the swing period and torque output characteristics. Under the action of waves, the pendulum weight 1 generates a reciprocating swinging motion, and the pendulum arm 2 rotates reciprocally about the centerline of the pendulum shaft 3, transmitting the swinging motion of the pendulum weight 1 to the pendulum shaft 3. In one or more embodiments, the pendulum shaft 3 is a cylindrical rotating shaft, both ends of which are supported by bearings on fixed brackets of the device, and the pendulum shaft 3 can rotate freely relative to the brackets. The pendulum shaft 3 is fixed to the pendulum arm 2 by a key connection or a spline connection, ensuring that the swinging motion of the pendulum arm 2 is fully transmitted to the pendulum shaft 3. When the pendulum arm 2 swings under wave excitation, the pendulum shaft 3 rotates reciprocally, converting the swinging motion into a rotational torque output. In one or more embodiments, the pendulum gearbox 4 is connected to the pendulum shaft for receiving the rotational torque from the pendulum shaft 3 and amplifying the gear ratio. The pendulum gearbox 4 is internally provided with a multi-stage gear transmission mechanism, which converts the high-speed, low-torque rotation input from the pendulum shaft 3 into low-speed, high-torque rotation through multiple HK 30137247 A 8 stages of speed reduction and torque increase, and then outputs it. In one or more embodiments, the gear ratio of the pendulum gearbox 4 is designed in the range of 10:1 to 50:1, and the specific gear ratio is determined according to the input requirements of the subsequent energy storage system. The gearing ratio of 10:1 is recommended when wave energy is high. Alternatively, the gearing ratio of 50:1 is recommended when wave energy is low. The output end of the pendulum gearbox 4 drives the first uni-directional gear 5 and the second uni-directional gear 6 to rotate simultaneously. In one or more embodiments, the first uni-directional gear 5 and the second uni-directional gear 6 are arranged side-by-side at the output end of the pendulum gearbox 4. They are structurally independent of each other but driven by the same power source. Both the first uni-directional gear 5 and the second uni-directional gear 6 are one-way clutch structures, internally provided with structures such as a ratchet mechanism or a roller-type overrunning clutch, allowing rotational motion to pass freely in one direction while locking in the opposite direction. This one-way transmission characteristic enables the side-by-side first uni-directional gear 5 and second uni-directional gear 6 to work together to convert the bidirectional reciprocating rotational motion input from the pendulum shaft 3 into a unidirectional, irreversible continuous rotational motion. In this way, the bidirectional reciprocating swing generated by the pendulum system is converted into a co-directional continuous rotational output of the first uni-directional gear 5 and the second uni-directional gear 6, thereby driving the clutch 7 to rotate unidirectionally. In one or more embodiments, the clutch 7 is an intermittent gear structure having a missing tooth and slope portion. Within one rotation cycle, the clutch 7 alternately switches between the coupled state and the decoupled state with the bidirectional gear 8. Its function is to switch the motion transmission path between the energy storage phase and the energy release phase. In the energy storage phase, the clutch 7 and the bidirectional gear 8 are in the coupled state; in the energy release phase, the clutch 7 and the bidirectional gear 8 are in the decoupled state. In one or more embodiments, the intermittent gear structure of the clutch 7 ensures that during the switching between the coupled state and the decoupled state, a predetermined gap is maintained between the bidirectional gear 8 and the clutch 7, preventing collision and impact HK 30137247 A 9 when coupling or decoupling, thereby achieving zero-collision energy storage and zero-overhead energy release. In one or more embodiments, the bidirectional gear 8 is fixedly connected to the clutch 7. When the clutch 7 is in the coupled state, the bidirectional gear 8 rotates synchronously with the clutch 7. The number of teeth, module, and other parameters of the bidirectional gear 8 are determined according to the overall design requirements of the transmission system. The rotational motion of the bidirectional gear 8 is transmitted to the winding gearbox 10 via the winding shaft 9. In one or more embodiments, the winding shaft 9 is a short shaft, both ends of which are connected to the bidirectional gear 8 and the winding gearbox 10 by couplings or direct key connections. The main function of the winding shaft 9 is to change the direction of transmission or to serve as an intermediate shaft, and its length and diameter are determined according to the internal spatial layout of the device. In one or more embodiments, the winding gearbox 10 is connected to the output end of the winding shaft 9, and is also internally provided with a multi-stage gear transmission mechanism. The winding gearbox 10 further amplifies the gear ratio of the input rotational motion, converting the rotation input from the winding shaft 9 into a slower, higher-torque rotation to drive the winding barrel 11. In a specific embodiment of the present application, the gear ratio of the winding gearbox 10 is designed in the range of 5:1 to 20:1, used in combination with the gear ratio of the pendulum gearbox 4, so that the overall system obtains sufficient torque output to wind the wire 12. The gearing ratio of 5:1 is recommended when wave energy is high. Alternatively, 20:1 is recommended when wave energy is low. In one or more embodiments, the winding barrel 11 is mounted at the output end of the winding gearbox 10, and its surface is provided with specially designed groove structures for orderly winding of the wire 12. The diameter and width of the winding barrel 11 are determined according to the winding capacity requirement of the wire 12, and the pitch of the grooves on its surface matches the diameter of the wire 12, ensuring that the wire 12 can be neatly arranged during winding without overlapping HK 30137247 A 10 or crossing. When the winding barrel 11 rotates, the grooves on its surface guide the wire 12 to move axially, achieving orderly winding and release of the wire 12. In one or more embodiments, the wire 12 is a flexible high-strength steel cable, one end of which is fixedly connected to the surface of the winding barrel 11, and the other end of which passes through a guide pulley and is connected to the inside of the power wire box 13. The wire 12 forms a loop between the winding barrel 11 and the power wire box 13. When the winding barrel 11 rotates to wind the wire 12, the wire 12 is pulled out of the power wire box 13; when the winding barrel 11 rotates in reverse to release the wire 12, the wire 12 is pulled back into the power wire box 13 by spring force. In one or more embodiments, the power wire box 13 is internally provided with a power spring, for storing and releasing mechanical potential energy when the wire 12 is pulled out and released. The housing of the power wire box 13 is fixedly mounted on a bracket inside the device, and the housing is provided with guide holes and sealing structures, allowing the wire 12 to freely enter and exit while maintaining internal sealing. In one or more embodiments, the third uni-directional gear 14 is mounted on the transmission path between the winding barrel 11 and the output shaft 15. Its structure is similar to that of the first uni-directional gear 5 and the second uni-directional gear 6, all being one-way clutch structures. The function of the third uni-directional gear 14 is to ensure that energy can only be transmitted unidirectionally from the power wire box 13 via the winding barrel 11 to the output shaft 15, preventing energy backflow when the wire 12 is being pulled out. When the spring of the power wire box 13 releases energy, the third uni-directional gear 14 is in the coupled state, allowing torque to be transmitted to the output shaft 15; when the winding barrel 11 is rotated by being pulled by the wire 12, the third uni-directional gear 14 is in the decoupled state, cutting off the torque transmission path. In one or more embodiments, the output shaft 15 is a long shaft connected between the third uni-directional gear 14 and the output gearbox 16 for transmitting rotational motion. Both ends of the output shaft 15 are supported by bearings on brackets of the HK 30137247 A 11 device. The output shaft 15 receives the torque transmitted from the third uni-directional gear 14 and delivers that torque to the output gearbox 16. In one or more embodiments, the output gearbox 16 is connected to the input end of the output shaft 15. The output gearbox 16 performs a final gear ratio amplification on the rotational motion transmitted by the input shaft, so that the rotary power generator 17 operates within an optimal rotational speed range. In one or more embodiments, the rotary power generator 17 is a generator such as a permanent magnet synchronous generator or an induction generator, and its input shaft is connected to the output shaft of the output gearbox 16. The rotary power generator 17 converts the input mechanical energy into electrical energy for output, and its power rating is determined according to the overall design capacity of the system. In one or more embodiments, the marine energy converter comprises an electric energy processing system and a control system, respectively including a current sensor, a voltage sensor, a regulator, a charger, a battery, a microprocessor, a 4G VPN router, and a servo motor. In one or more embodiments, the current sensor and the voltage sensor are respectively connected in series and in parallel in the output circuit of the rotary power generator 17 for real-time acquisition of the current and voltage parameters of the power generation system. The regulator is connected to the output end of the rotary power generator 17 for performing voltage stabilization and current stabilization processing on the raw electric energy output by the rotary power generator 17, stabilizing the output voltage within a preset range and limiting the maximum output current, so as to protect the safety of subsequent circuits and equipment. The charger is connected to the output end of the regulator for receiving the regulated electric energy and controlling the charging process to the battery, including charging current limitation, charging termination voltage judgment, overcharge protection, and other functions. The battery is connected to the output end of the charger for storing the electric energy converted from marine energy; the battery type can be a lead-acid battery, a lithium battery, or other suitable energy HK 30137247 A 12 storage battery. The battery also serves as the power supply for the microprocessor, the 4G VPN router, and the servo motor. In one or more embodiments, the microprocessor is responsible for receiving the sensor data collected by the current sensor and the voltage sensor, processing and packaging the data, and sending the data to the 4G VPN router via a serial communication interface. The microprocessor is typically a low-power embedded microprocessor, for example, an ARM Cortex-M series processor. The microprocessor operates in a low-power consumption mode to save electrical energy; this low-power mode is achieved by dynamic voltage and frequency scaling and shutting down unnecessary peripherals, maximizing battery life while ensuring normal data transmission and control functions. In one or more embodiments, the 4G VPN router establishes a VPN tunnel over a 4G-LTE network to provide network connectivity. The 4G VPN router supports the TCP / IP protocol stack and encrypted data transmission. In one or more embodiments, the servo motor is connected to the control system of the clutch 7, and controls the clutch 7 by controlling the rotation angle and speed of the servo motor. As shown in Fig. 2, a marine energy converter based green energy system provided by the present application comprises a marine energy converter, an MEC IoT server, MEC IoT server software, and a user terminal. In one or more embodiments, the MEC IoT server is deployed in the cloud or in a local data center, and is configured to receive sensor data from the marine energy converter and send a control instruction to the marine energy converter according to a preset rule or a user instruction. In one or more embodiments, the MEC IoT server software is configured with a web application and a database for displaying real-time and historical sensor data received from the marine energy converter. HK 30137247 A 13 In one or more embodiments, the user terminal is a computing device running a web browser, and is configured to receive a user’s control instruction to adjust an operating parameter of the marine energy converter. In a specific application scenario, multiple marine energy converters can be deployed at different positions in the same sea area. Each marine energy converter works independently and connects to the MEC IoT server via its own 4G VPN router. The sensor data of each marine energy converter is uploaded to the server in real time, and the server software analyzes and processes the data to generate operation reports and optimization suggestions for each device. Users can remotely monitor the working status of all marine energy converters through the terminal device and take timely measures to adjust when abnormalities are found. The working process of the marine energy converter is cyclically executed according to the following steps: The first step is energy capture. When waves arrive at the location of the marine energy converter, the waves exert a periodic impact force on the pendulum weight 1. Because the natural frequency of the pendulum system is designed to match the wave period, the pendulum weight 1, under continuous wave excitation, enters a resonance state and swings with the maximum amplitude. The swinging motion of the pendulum weight 1 is transmitted to the pendulum shaft 3 through the pendulum arm 2, and is converted into a reciprocating rotational motion of the pendulum shaft 3. The reciprocating rotation of the pendulum shaft 3 drives the pendulum gearbox 4 to alternately rotate forward and backward, and the pendulum gearbox 4 amplifies the gear ratio of the input rotation and outputs it to the first uni-directional gear 5 and the second uni-directional gear 6. The second step is motion conversion. The side-by-side first uni-directional gear 5 and second uni-directional gear 6 work alternately, converting the bidirectional reciprocating rotation input from the pendulum shaft 3 into a unidirectional continuous rotation. When the pendulum shaft 3 rotates clockwise, the clutch mechanism of the first uni-directional gear 5 engages, transmitting the rotational motion to the clutch 7; when the pendulum shaft 3 rotates counterclockwise, the clutch mechanism of the second uni-directional gear 6 engages, also transmitting the HK 30137247 A 14 rotational motion to the clutch 7. Through this alternating engagement, the clutch 7 obtains a continuous unidirectional rotational output. The third step is energy storage. When the clutch 7 is in the coupled state, it drives the bidirectional gear 8 to rotate. The bidirectional gear 8 drives the winding gearbox 10 via the winding shaft 9, and the winding gearbox 10 further amplifies the gear ratio and then drives the winding barrel 11 to rotate. When the winding barrel 11 rotates, the grooves on its surface guide the wire 12 to be pulled out of the power wire box 13. The tensioning of the wire 12 compresses or twists the power wire box 13. During this process, the engagement between the intermittent gear structure of the clutch 7 and the bidirectional gear 8 remains continuously stable, and the system achieves zero-collision energy storage. The fourth step is energy release. The microprocessor determines the timing for energy release based on sensor data and preset algorithms, and controls the clutch 7 by driving the servo motor. When the wire 12 wound on the winding barrel 11 reaches a preset length or when it is detected that wave energy has accumulated sufficiently, the microprocessor issues a control instruction, and the servo motor drives the clutch 7 to achieve the decoupled state with the bidirectional gear 8. Because the clutch 7 is decoupled from the bidirectional gear 8, the bidirectional gear 8, the winding shaft 9, the winding gearbox 10, and the winding barrel 11 are no longer driven to rotate. The power wire box 13 pulls back the wire 12, and the wire 12 pulls the winding barrel 11 to rotate in reverse. The reverse rotation of the winding barrel 11 transmits torque to the output shaft 15 through the third uni-directional gear 14. The fifth step is electrical energy output. The output shaft 15 receives the torque pulse transmitted from the third uni-directional gear 14; this torque pulse drives the output gearbox 16 to rotate; the output gearbox 16 further amplifies the gear ratio and then drives the rotary power generator 17 to output electrical energy in pulses. The electrical energy pulses output by the rotary power generator 17 are sent to the regulator for voltage and current stabilization, then delivered to the charger, which controls the charging process to store the electrical energy in the battery. The above energy storage and energy release processes repeat cyclically, and one complete energy conversion cycle can be completed within each wave period. Under HK 30137247 A 15 the action of continuous waves, the marine energy converter can continuously convert wave energy into electrical energy and store it in the battery. The microprocessor collects data from the current sensor and the voltage sensor in real time, transmits the data to the 4G VPN router, and then sends it to the MEC IoT server via the VPN network. The server software receives and stores the data, and at the same time sends control instructions to each marine energy converter as needed, thereby achieving remote monitoring and parameter optimization adjustment of the system. In an embodiment of the present application, the marine energy converter can also perform parameter self-adjustment according to the actual wave conditions of the sea area, so as to achieve the best matching state with the actual wave period. This self-adjustment function enables the marine energy converter to maintain a high energy conversion efficiency under different sea areas and wave conditions of different seasons. In an embodiment of the present application, the housing of the marine energy converter is made of a high-strength corrosion-resistant material, such as glass fiber reinforced composite material or a steel structure coated with an anti-corrosion coating. The housing is designed as a completely sealed structure with a waterproof rating reaching IP68, ensuring that the internal mechanical components and electronic equipment are not corroded by seawater. The shape of the housing is optimized by fluid dynamics design to reduce resistance and vortex when subjected to waves, improving the stability of the device under severe sea conditions. The interior of the housing is filled with an inert gas or sealed with sealing gaskets to prevent moisture penetration that could corrode the mechanical components inside the housing. In an embodiment of the present application, the installation method of the marine energy converter uses a mooring system fixed to the seabed or a floating platform structure. The mooring system includes steel cables, anchor chains, and counterweight blocks; the depth position of the device in the water can be adjusted by changing the length of the steel cables. The floating platform structure adopts a buoy-type design, allowing the device to rise and fall with the waves, always maintaining a relative motion relationship with the waves, thereby capturing wave energy more effectively. The device is connected to the seabed or platform by a flexible connection structure, HK 30137247 A 16 allowing the device to swing freely within a certain range without restraint, while ensuring that the device will not be dislodged from its predetermined position under extreme storm conditions. In the present application, unless otherwise expressly specified and defined, a first feature being “on” or “under” a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “over”, or “on top of” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply that the horizontal height of the first feature is greater than that of the second feature. A first feature being “below”, “beneath”, or “under” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply that the horizontal height of the first feature is less than that of the second feature. In the present application, the terms “one embodiment”, “some embodiments”, “example”, “specific example”, or “some examples” mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms are not necessarily referring to the same embodiment or example. Furthermore, the described specific features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification, as well as features of different embodiments or examples, without contradiction. Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Persons of ordinary skill in the art may change, modify, substitute, and alter the above embodiments within the scope of the present application. HK 30137247 A 1 CLAIMS 1. A marine energy converter, comprising: a pendulum system configured to absorb marine energy by resonance to generate a swinging motion; an energy conversion mechanism connected to the pendulum system and configured to convert a bidirectional swinging motion of the pendulum system into a unidirectional rotation; a clutch configured to have a coupled state and a decoupled state, an input end of the clutch receiving the unidirectional rotation; a bidirectional gear meshingly connected with the clutch; an energy storage and release system configured to be connected to an output end of the clutch, store mechanical energy brought by the unidirectional rotation when the clutch is in the coupled state, and release the stored mechanical energy when the clutch is in the decoupled state; a rotary power generator configured to be connected to the energy storage and release system, and be driven to generate electricity when the energy storage and release system releases the mechanical energy. 2. The marine energy converter according to claim 1, wherein the pendulum system comprises: a pendulum weight, a pendulum arm, and a pendulum shaft; the pendulum weight is fixed to one end of the pendulum arm; the other end of the pendulum arm is fixed to the pendulum shaft, so as to convert the swinging motion into a rotational torque applied to the pendulum shaft. 3. The marine energy converter according to claim 1, wherein the energy conversion mechanism comprises a pendulum gearbox, a first uni-directional gear and a second uni-directional gear; the pendulum gearbox has an input end and an output end, the input end is connected to the pendulum system, and the output end drives the first uni-directional gear and the second uni-directional gear to convert the bidirectional swinging motion into a unidirectional rotation. 4. The marine energy converter according to claim 1, wherein the clutch is an intermittent gear structure having a missing tooth and slope portion, and the clutch alternately switches between the coupled state and the decoupled state with the bidirectional gear within one rotation cycle. HK 30137247 A 2 5. The marine energy converter according to claim 1, wherein the energy storage and release system comprises a winding shaft, a winding gearbox, a winding barrel, a wire, and a power wire box; the winding shaft is connected between the bidirectional gear and the winding gearbox; the winding gearbox is connected to the winding barrel for amplifying the gear ratio and driving the winding barrel to rotate; the surface of the winding barrel is designed with special grooves for winding the wire; one end of the wire is connected to the winding barrel, and the other end is connected to the power wire box; the power wire box is used for storing mechanical potential energy and releasing energy. 6. The marine energy converter according to claim 1, comprising an output system, the output system comprising a third uni-directional gear, an output shaft, and an output gearbox; the third uni-directional gear is arranged between the power wire box and the output shaft to ensure that energy can only be transmitted unidirectionally from the power wire box to the output shaft; the output shaft is connected between the third uni-directional gear and the output gearbox for transmitting rotational motion; the output gearbox further amplifies the gear ratio so that the rotary power generator operates. 7. The Marine energy converter according to claim 1, comprising an electric energy processing system, the electric energy processing system comprising a current sensor, a voltage sensor, a regulator, a charger, and a battery; the current sensor and the voltage sensor are configured to monitor in real time the current and voltage parameters of the power generation system; the regulator is connected to the rotary power generator for performing voltage stabilization and current stabilization processing on the raw electric energy output by the rotary power generator; the charger is connected to the regulator for controlling the charging process to ensure safe and efficient charging of the battery; the battery is connected to the charger for storing the electric energy converted from marine energy. 8. The marine energy converter according to claim 1, comprising a control system, the control system comprising a microprocessor and a 4G VPN router; the microprocessor is configured to receive sensor data collected by the current sensor and the voltage sensor, process the sensor data, and send it to the 4G VPN router; the 4G VPN router is configured to establish a VPN tunnel over a 4G-LTE network to provide network connectivity. HK 30137247 A 3 9. A marine energy converter based green energy system, comprising: the marine energy converter (MEC) according to any one of claims 1 to 8, an MEC IoT server, MEC IoT server software, and a user terminal, wherein the MEC IoT server is configured to receive sensor data from the Marine energy converter, and send a control instruction to the Marine energy converter according to a preset rule or a user instruction; the MEC IoT server software is configured with a web application and a database for displaying real-time and historical sensor data received from the Marine energy converter; the user terminal is configured to receive a user’s control instruction to adjust an operating parameter of the Marine energy converter. HK 30137247 A 1 DRAWINGS FIG.1 FIG. 2 HK 30137247 A