A floating power generation device

Abstract

The application provides a floating power generation device applied to a ship body, which comprises a fixed plate and a floating plate arranged below the fixed plate, and an elastic reset mechanism and a power generation mechanism are arranged between the fixed plate and the floating plate; the upper and lower ends of the elastic reset mechanism are connected with the fixed plate and the floating plate respectively, so that the floating plate reciprocates in the vertical direction relative to the fixed plate and the displacement distance of the floating plate is limited; the power generation mechanism comprises a movable shaft arranged on the floating plate, a magnetic part arranged on the outer wall of the movable shaft and a coil winding arranged around the fixed plate, and the movable shaft can reciprocate linearly in the vertical direction under the drive of the elastic reset mechanism; the power generation device has compact structure, stable and efficient power generation and is convenient to install and maintain on the ship body.

Description

Technical Field

[0001] This application relates to the field of generator technology, and more specifically, to a floating power generation device. Background Technology

[0002] Wave energy is a clean and renewable energy source, and its application in ships, especially yachts with high requirements for environmental protection and quietness, as an auxiliary power source is of positive significance. Currently, there are some technical solutions that attempt to use wave energy to power ships.

[0003] Existing technologies typically employ complex mechanical transmission mechanisms to convert the up-and-down motion of the buoy into rotational motion, which then drives a traditional rotary generator. This approach involves multiple energy conversion stages, resulting in significant mechanical losses, a complex and cumbersome structure, and difficulty in adapting to the lightweight and streamlined design requirements of yachts, while also exhibiting low reliability. Additionally, some existing technologies utilize the principle of linear generators to directly convert the linear motion of the buoy into electrical energy, thus improving efficiency. However, these solutions rely on simple springs or counterweights to reset the buoy, lacking effective motion guidance and displacement limiting functions. In harsh sea conditions, the buoy may experience excessive displacement or unexpected swaying, leading to collisions, wear, or even structural damage to core generator components (such as magnets and coils), affecting generator stability and device lifespan. Furthermore, existing generator installation methods often involve welding or permanent fixing, hindering flexible configuration, maintenance, or disassembly based on hull type or power requirements. Summary of the Invention

[0004] This application aims to at least partially solve the above-mentioned technical problems and provide a floating power generation device.

[0005] This application provides a floating power generation device, comprising: the power generation device includes a fixed plate and a floating plate disposed below the fixed plate, wherein an elastic reset mechanism and a power generation mechanism are provided between the fixed plate and the floating plate;

[0006] The upper and lower ends of the elastic reset mechanism are respectively connected to the fixed plate and the floating plate, so that the floating plate reciprocates in the vertical direction relative to the fixed plate and limits the displacement distance of the floating plate.

[0007] The power generation mechanism includes a movable shaft on the float, a magnetic component on the outer wall of the movable shaft, and a coil winding surrounding the fixed plate. The movable shaft reciprocates linearly along the vertical direction with the float.

[0008] Furthermore, the elastic reset mechanism includes a support member, an elastic member, and a sliding block. A sliding groove is provided on one side of the fixed plate and the floating plate. The elastic member and the sliding block are movably disposed in the sliding groove. The movable end of the elastic member is connected to one side end of the sliding block. The two ends of the support member are respectively hinged to the sliding blocks located in the fixed plate and the floating plate.

[0009] Furthermore, the support member includes a first support rod and a second support rod, which are hinged at their centers. The upper ends of the first and second support rods are respectively hinged to the bottom ends of adjacent sliding blocks located in the fixed plate, and the lower ends of the first and second support rods are respectively hinged to the top ends of adjacent sliding blocks located in the floating plate.

[0010] Furthermore, the maximum extension height of the elastic reset mechanism is H. max Minimum compression height H min ΔH=H max -H min ΔH is the displacement distance of the floating plate.

[0011] Furthermore, the fixed plate has a power generation cavity with an opening at the lower end, the coil winding is disposed on the inner wall of the power generation cavity, and the movable shaft performs reciprocating linear motion in the vertical direction in the power generation cavity driven by the floating plate.

[0012] Furthermore, the magnetic component is attached to the upper part of the movable shaft, and the ratio of the projection of the magnetic component on the vertical plane to the projection length of the coil winding on the vertical plane is 0.5-0.7.

[0013] Furthermore, the gap between the magnetic component and the coil winding is 0.5 mm.

[0014] Furthermore, the upper and lower ends of the power generation cavity are provided with bushings, and the movable shaft is clearance-fitted with the bushings.

[0015] Furthermore, the power generation device is detachably mounted on the side wall of the hull via bolt or snap-fit ​​connection.

[0016] Furthermore, the elastic reset mechanism and the power generation mechanism are arranged alternately along the length of the fixed plate and the floating plate.

[0017] Beneficial effects:

[0018] 1. By setting an elastic reset mechanism, the float plate can be driven to reciprocate in the vertical direction relative to the fixed plate, and the displacement distance of the float plate can be limited, which can prevent damage to the magnetic components and coil windings by large-amplitude movement of the movable shaft.

[0019] 2. The device can be installed in two ways: bolted connection and snap-fit ​​connection. A universal base can be pre-installed on the side of the hull, which enables the rapid disassembly of the power generation unit. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the side of the hull and the power generation device installed on the hull in this embodiment;

[0022] Figure 2 This is a partial cross-sectional view of the stern of the hull and the power generation device in this embodiment;

[0023] Figure 3 for Figure 2 Enlarged view of part A in the middle;

[0024] Figure 4 for Figure 2 Enlarged view of part B in the middle.

[0025] Figure label:

[0026] 1-Hull, 10-Ship body, 11-Compartments;

[0027] 2-Power generation device, 21-Fixed plate, 22-Floating plate, 23-Elastic reset mechanism, 231-Supporting component, 2311-First support rod, 2312-Second support rod, 232-Sliding block, 233-Elastic component, 234-Sliding groove, 24-Power generation mechanism, 241-Moving shaft, 242-Magnetic component, 243-Coil winding, 244-Shaft sleeve. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0029] According to an embodiment of this application, a floating power generation device is applied to a ship hull 1. The power generation device 2 includes a fixed plate 21 and a floating plate 22 disposed below the fixed plate 21. An elastic reset mechanism 23 and a power generation mechanism 24 are provided between the fixed plate 21 and the floating plate 22.

[0030] The upper and lower ends of the elastic reset mechanism 23 are connected to the fixed plate 21 and the float 22, respectively. When the hull 1 is sailing or anchoring, the float 22 is subjected to the buoyancy and impact force of the waves, which drives the elastic reset mechanism 23 to extend and retract, so that the float 22 reciprocates in the vertical direction relative to the fixed plate 21. The extension and retraction stroke of the elastic reset mechanism 23 is fixed, and the displacement distance of the float 22 is limited by the difference between the maximum extension height and the minimum compression height, so as to prevent the float 22 from moving too much and causing damage to other components.

[0031] The elastic reset mechanism 23 includes a support member 231, an elastic member 233, and a sliding block 232. A sliding groove 234 extending along the length of the power generation device is provided on the inner side of the fixed plate 21 facing the float 22, and on the inner side of the float 22 facing the fixed plate 21. The sliding block 232 is rectangular and can slide freely along its length within the corresponding sliding groove 234. The elastic member 233 is a cylindrical helical compression spring, also housed within the sliding groove 234. One end of the elastic member 233 is fixedly abutted against the inner end of the sliding groove 234, and the other end is connected to one end face of the sliding block 232. The support member 231 adopts a scissor-type linkage structure, including a first support rod 2311 and a second support rod 2312, which are cross-hinged through a central hinge axis to form an "X" shape. The upper ends of the first support rod 2311 and the second support rod 2312 are hinged to the bottom ends of two adjacent sliding blocks 232 in the sliding groove 234 of the fixed plate 21, and the lower ends are hinged to the top ends of two adjacent sliding blocks 232 in the sliding groove 234 of the float plate 22. When the float plate 22 and the fixed plate 21 are relatively displaced, the sliding blocks 232 slide and compress or release the elastic element 233, while driving the scissor-type support 231 to unfold or retract. When fully unfolded, the distance between the fixed plate 21 and the float plate 22 (maximum extension height H) is... max The distance between the fully collapsed section (minimum compression height H) and the distance between the fully collapsed section. min The difference ΔH is a fixed value determined by the geometry of the connecting rod. This ΔH is the maximum allowable displacement distance of the float 22 relative to the fixed plate 21 in the vertical direction, thus realizing mechanical limiting.

[0032] The power generation mechanism 24 includes a movable shaft 241 on the float 22, a magnetic component 242 on the outer wall of the movable shaft 241, and a coil winding 243 surrounding the fixed plate 21. The movable shaft 241 moves synchronously with the float 22 and reciprocates linearly in the vertical direction under the drive of the elastic reset mechanism 23.

[0033] The magnetic component 242 is a high-performance neodymium iron boron permanent magnet ring, which is fixedly sleeved on the outer periphery of the upper part of the movable shaft 241 by adhesive bonding or interference fit. The coil winding 243 is made of enameled copper wire wound on an insulating frame, which is fixedly mounted around the inner wall of the power generation cavity by snap-fit ​​or adhesive bonding.

[0034] The fixed plate 21 has a power generation cavity with an opening at the lower end. The power generation cavity has a cylindrical structure, and the coil winding 243 is evenly wound around the inner wall of the power generation cavity to ensure a uniform magnetic field distribution. The upper end of the movable shaft 241 extends into the power generation cavity, so that the magnetic component 242 on it is located exactly inside the cylindrical space surrounded by the coil winding 243. The movable shaft 241 makes vertical reciprocating motion inside the power generation cavity, and the magnetic component 242 moves up and down with the movable shaft 241, continuously cutting the magnetic field lines of the coil winding 243, generating an induced current according to the principle of electromagnetic induction, and realizing power generation.

[0035] The ratio of the projection length of the magnetic component 242 on the vertical plane to the projection length of the coil winding 243 on the vertical plane is 0.5-0.7. This ratio ensures that the magnetic component 242 always effectively cooperates with the coil winding 243 during the movement process, improves the magnetoelectric conversion efficiency, and ensures that the magnetic component 242 always effectively overlaps with the coil winding 243 throughout the entire power generation process.

[0036] That is, when the ratio is less than 0.5, the effective cutting stroke of the magnetic element 242 is too short, and the power generation efficiency drops significantly; when the ratio is greater than 0.7, the movable shaft 241 and the power generation cavity need to be lengthened, resulting in an unnecessary increase in the size and weight of the device.

[0037] The gap between the magnetic component 242 and the coil winding 243 is 0.5mm. The small gap is to further enhance the magnetic field coupling effect and obtain the empirical value of maximum magnetic flux without mechanical friction.

[0038] Both the upper and lower ends of the power generation cavity are equipped with bushings 244. The movable shaft 241 is clearance-fitted with the bushings 244. The bushings 244 provide guidance and support for the movable shaft 241, reduce motion friction, and ensure the straightness and stability of the vertical movement of the movable shaft 241.

[0039] To prevent moisture from entering the generator cavity, annular sealing grooves are provided on the inner walls of both upper and lower bushings 244, and O-ring seals 245 are embedded in these grooves. When the movable shaft 241 passes through the bushings 244, the inner ring of the O-ring seal 245 maintains elastic contact with the outer surface of the movable shaft 241, forming a dynamic seal.

[0040] The elastic reset mechanism 23 and the power generation mechanism 24 are arranged alternately along the length of the fixed plate 21 and the floating plate 22. The evenly distributed structure ensures that the floating plate 22 is subjected to balanced forces and has high space utilization. The power generation device 2 is detachably installed on the side wall of the hull 1 by bolt or snap-fit ​​connection. The installation position is flexible, the disassembly and assembly are convenient, and it is easy to maintain and replace in daily life.

[0041] Specifically, the snap-fit ​​connection can be achieved by pre-setting a horizontal groove on the hull 1, with a latch inside the groove. When the snap-fit ​​connector of the fixing plate 21 is inserted into the groove, the latch can limit and fix it to prevent the fixing plate 21 from shaking. When disassembling, the latch can be returned to its original position.

[0042] In this embodiment, the induced current can be transmitted through wires to the energy storage module or electrical equipment of the hull 1 to provide auxiliary power for ship lighting, communication and other systems, thereby realizing the efficient utilization of wave energy.

[0043] Based on the above-described specific embodiments, the floating power generation device 2 of this application, as a complete power generation system, requires the generated electrical energy to be processed before it can be safely and stably supplied to the batteries (such as main or auxiliary batteries) of the hull 1. Therefore, the hull is equipped with an energy processing circuit electrically connected to the power generation mechanism 24. The energy processing circuit includes, in sequence along the direction of power transmission, a filtering unit, a rectification unit, a voltage stabilizing unit, and a protection board.

[0044] The filtering unit includes a first filtering unit and a second filtering unit. The input terminal of the first filtering unit is connected to the output terminal of the coil winding 243 of the power generation mechanism 24. Due to the irregularity of wave frequencies, the raw AC power generated by the power generation mechanism 24 may contain multiple frequency components. The first filtering unit is used to filter the raw AC power, removing noise and interference signals that are not within the preset effective power generation frequency range, thereby outputting relatively pure AC power.

[0045] The input terminal of the rectifier unit is connected to the output terminal of the first filter unit. The rectifier unit, for example, can be a full-bridge rectifier circuit, used to convert the AC power processed by the first filter unit into DC power.

[0046] The input terminal of the voltage regulator unit is connected to the output terminal of the rectifier unit. Marine batteries typically have specific charging voltage requirements, such as 12V or 24V systems, while the voltage generated by the generator unit 24 may fluctuate with wave intensity. The voltage regulator unit is used to boost and regulate the rectified DC power, ensuring its output voltage remains within the range required for battery charging. The DC power processed by the voltage regulator unit is then sent to a second filter unit for secondary filtering to further remove ripple and noise, ensuring the quality of the output power.

[0047] The input terminal of the protection board is connected to the output terminal of the second filter unit, and its output terminal is used to connect to the battery of hull 1. The protection board is a key component to ensure the safe and reliable operation of the entire power generation and charging system, and it integrates at least the following protection circuits:

[0048] Anti-reverse charging circuit: Used to prevent the current from the battery from flowing back into the generator mechanism 24 when the generator 2 stops generating electricity or the output voltage is lower than the battery voltage, thereby protecting components such as the coil winding 243 from reverse current impact.

[0049] Overcharge protection circuit: Used to monitor the battery terminal voltage in real time. When the battery is detected to be fully charged, i.e., the voltage reaches the set upper limit, the charging circuit is automatically cut off or bypassed to prevent the battery from being damaged due to overcharging.

[0050] Overcurrent protection circuit: Used to monitor the current in the charging circuit. When the current exceeds the safety threshold due to a short circuit or other fault, the circuit is automatically cut off to prevent the line from overheating or the components from burning out.

[0051] The complete workflow of this floating power generation device 2 is as follows: Waves drive the float 22 and the movable shaft 241 to reciprocate, causing the magnetic component 242 to cut magnetic field lines, generating induced alternating current in the coil winding 243. This alternating current sequentially passes through a first filtering unit to filter out noise, a rectifier unit to convert it to direct current, a voltage regulator unit for boosting and regulating the voltage, a second filtering unit to filter out ripple, and finally passes through a protection board integrating anti-reverse charging, overcharge, and overcurrent protection functions, and is safely stored in the ship's battery. By integrating the above-mentioned power processing circuit, a complete technical solution is achieved from wave energy harvesting to stable and safe power output. It not only generates electricity efficiently but also outputs high-quality power, provides comprehensive protection for the battery, and greatly improves the practicality, safety, and reliability of the entire power generation system.

[0052] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0053] The various embodiments in this specification are described in a related manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the mechanical embodiments are described simply because they are based on similarities to the method embodiments; relevant parts can be referred to the descriptions of the method embodiments.

[0054] The above are merely embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A floating power generation device, applied to a ship's hull, characterized in that, The power generation device includes a fixed plate and a floating plate disposed below the fixed plate. An elastic reset mechanism and a power generation mechanism are provided between the fixed plate and the floating plate. The upper and lower ends of the elastic reset mechanism are respectively connected to the fixed plate and the floating plate, so that the floating plate reciprocates in the vertical direction relative to the fixed plate and limits the displacement distance of the floating plate. The power generation mechanism includes a movable shaft on the float, a magnetic component on the outer wall of the movable shaft, and a coil winding surrounding the fixed plate. The movable shaft reciprocates linearly along the vertical direction with the float.

2. The floating power generation device according to claim 1, characterized in that, The elastic reset mechanism includes a support member, an elastic member, and a sliding block. A sliding groove is provided on one side of the fixed plate and the floating plate. The elastic member and the sliding block are movably disposed in the sliding groove. The movable end of the elastic member is connected to one side end of the sliding block. The two ends of the support member are respectively hinged to the sliding blocks located in the fixed plate and the floating plate.

3. The floating power generation device according to claim 2, characterized in that, The support includes a first support rod and a second support rod, which are hinged together at their centers. The upper ends of the first and second support rods are respectively hinged to the bottom ends of adjacent sliding blocks located in the fixed plate, and the lower ends of the first and second support rods are respectively hinged to the top ends of adjacent sliding blocks located in the floating plate.

4. The floating power generation device according to claim 1, characterized in that, The maximum extension height of the elastic reset mechanism is H. max Minimum compression height H min ΔH=H max -H min ΔH is the displacement distance of the floating plate.

5. The floating power generation device according to claim 1, characterized in that, The fixed plate has a power generation cavity with an opening at the lower end. The coil winding is located on the inner wall of the power generation cavity. The movable shaft is driven by the floating plate to perform reciprocating linear motion in the vertical direction within the power generation cavity.

6. The floating power generation device according to claim 5, characterized in that, The magnetic component is attached to the upper part of the movable shaft, and the ratio of the projection of the magnetic component on the vertical plane to the projection length of the coil winding on the vertical plane is 0.5-0.

7.

7. The floating power generation device according to claim 5 or 6, characterized in that, The gap between the magnetic component and the coil winding is 0.5 mm.

8. The floating power generation device according to claim 5 or 6, characterized in that, The upper and lower ends of the power generation cavity are provided with bushings, and the movable shaft is clearance-fitted with the bushings.

9. The floating power generation device according to claim 1, characterized in that, The power generation device is detachably mounted on the side wall of the hull via bolt or snap-fit ​​connection.

10. The floating power generation device according to claim 1, characterized in that, The elastic reset mechanism and the power generation mechanism are arranged alternately along the length of the fixed plate and the floating plate.

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