A floating offshore wave power generation device based on the pendulum oscillation principle

Abstract

The present invention discloses an offshore floating wave power generation device based on the pendulum oscillation principle, comprising a shell, a permanent magnetic sphere, a coil inlay, an omnidirectional balance ring and a power storage device; the shell comprises an upper shell and a lower shell, the upper shell and the lower shell can be sealed and fixed by end flanges, and an elliptical or approximately elliptical cavity is formed inside the shell; the permanent magnetic sphere is arranged in the shell, and the left and right ends of the permanent magnetic sphere are fixed in the middle of the shell; the coil inlay is arranged in the permanent magnetic sphere and abuts against the permanent magnetic sphere; the coil inlay comprises a coil body and a coil bundle; the omnidirectional balance ring comprises an outer balance ring, an inner balance ring and a rotating shaft; the omnidirectional balance ring is arranged inside the coil inlay; the power storage device comprises a rectifier circuit board and a battery. The present invention is suitable for situations where there are large winds and waves in the open sea. The balance ring in the device senses movement and continuously cuts the magnetic lines of force, thereby generating a continuous supply of electricity to charge the battery.

Description

Technical Field

[0001] The present invention relates to a mechanical device for converting ocean wave energy into electrical energy, and in particular to an offshore floating wave power generation device based on the pendulum oscillation principle. Background Art

[0002] Ocean waves, formed by factors such as sea breezes and tides, create undulating waves on the surface of the seawater. The vast amount of renewable energy contained in these waves is environmentally friendly and inexhaustible compared to energy obtained from burning petrochemical materials. This has inspired people to explore methods and devices for generating electricity using wave energy. Current challenges with wave energy generation include high costs, low power generation, and instability. There is a need to find an efficient device that can continuously convert wave energy into electrical energy. Furthermore, since wave energy is collected in river water or even seawater, the material anti-corrosion requirement is to ensure good corrosion resistance while ensuring economic efficiency.

[0003] According to the principles of wave energy utilization, the conversion of wave energy into electrical energy is typically divided into three stages: the first stage is wave energy capture, the second stage is the intermediate conversion and transmission system, and the third stage is the generator output of electrical energy to supply loads. Due to power attenuation and energy dissipation between each stage, the overall collection efficiency is approximately 10-30%.

[0004] There are many methods for converting wave energy into electricity. Typical wave energy converters consist of two main components: a floating device and an anchoring system. The floating device floats on the sea surface and moves with the waves. The anchoring system, usually installed on the seabed or shore, secures the floating device. One component is fixed, while the other moves relative to the waves, using relative displacement to generate electricity. Based on the operating principle, these devices can be categorized as oscillating float, oscillating water column, raft, duck, overriding, and push-and-swing types. Based on the method of energy transfer, they can be pneumatic, hydraulic, mechanical, and magnetic. These devices require anchoring to keep them afloat, and long-term deployment can attract and breed marine organisms. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an offshore floating wave power generation device based on the principle of pendulum oscillation. The device eliminates the anchoring device and does not require fixing any part of it, reducing the capital investment in anchor chains, etc. At the same time, the present invention can be better applied to situations with large winds and waves in the open sea. The balance ring in the device senses movement and continuously cuts the magnetic lines of force, thereby generating a continuous supply of electricity to charge the battery. The device is suitable for surface or underwater vehicles floating with the wind and waves, and uses the potential energy of the ups and downs of the wind and waves and the kinetic energy of the falls to generate electricity, providing power for the battery source for the vehicle to collect and receive information, thereby increasing its operating time and enhancing its endurance operation capability.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] An offshore floating wave power generation device based on the pendulum oscillation principle comprises a shell, a permanent magnetic sphere, a coil inlay, an omnidirectional balance ring and a power storage device;

[0008] The housing comprises an upper housing and a lower housing, the upper housing and the lower housing being sealably fixed to each other via end flanges, and an elliptical or approximately elliptical cavity is formed inside the housing;

[0009] The permanent magnetic sphere is arranged in the shell, and the left and right ends of the permanent magnetic sphere are fixed to the middle of the shell;

[0010] The coil inlay is arranged in the permanent magnetic sphere and is fixed to the permanent magnetic sphere;

[0011] The coil inlay comprises a coil body and a coil bundle;

[0012] The omnidirectional gimbal includes an outer gimbal, an inner gimbal, and a rotating shaft; the rotating shaft passes through the centers of the outer and inner gimbals, and the rotating shaft is rotatably connected to the outer and inner gimbals; a first permanent magnet and a second permanent magnet with opposite magnetic poles are provided on the inner wall of the inner gimbal; a plurality of rotating balls are provided on the circumference of the outer gimbal, and the rotating balls can slide against the coil inlay;

[0013] The omnidirectional balance ring is arranged inside the coil inlay;

[0014] The power storage device includes a rectifier circuit board and a battery, and the coil bundle is connected to the rectifier circuit board through a conductive wire.

[0015] In one embodiment, a counterweight is provided at the bottom of the lower shell, so that the weight of the lower shell is 2-4 times the weight of the upper shell.

[0016] In one embodiment, a fin-shaped body is provided on the upper shell.

[0017] In one embodiment, the shell is made of a composite material of ceramic and resin, and the surface of the shell is smoothed, for example, polished.

[0018] In one embodiment, the flanges of the upper shell and the lower shell are fixed together by bolts.

[0019] In one embodiment, there are at least three rotating balls on the circumference of the outer balance ring.

[0020] In one embodiment, an electrical device is provided on the top of the upper shell, and the electrical device is connected to the battery via a conductive wire.

[0021] In one embodiment, an electrical device is provided outside the upper shell, and the battery is connected to the electrical device via a waterproof terminal.

[0022] In one embodiment, the power storage device is disposed at the bottom of the lower housing.

[0023] Any range described in the present invention includes the end value and any numerical value between the end values and any sub-range formed by the end value or any numerical value between the end values.

[0024] Unless otherwise specified, all raw materials in the present invention can be purchased commercially, and the equipment used in the present invention can adopt conventional equipment in the relevant field or refer to the existing technology in the relevant field.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1) The present invention adopts a simple mechanical structure to directly combine the mechanical movement of the waves with the changes in induced magnetic force, thereby directly generating electrical energy by utilizing the changes in magnetic force. Compared with other devices, the energy conversion level is reduced, and capture is conversion, thereby reducing the energy loss between capture and conversion and improving the conversion efficiency.

[0027] 2) The present invention adopts the rotation principle of the rotating inertial gimbal, so that all-directional wind and waves can be used to convert wave energy into electrical energy. Due to the existence of the omnidirectional rotating gimbal, the conversion of electrical energy will continue to occur during the recovery swing of the gimbal until the external environment returns to balance. It is basically unaffected by changes in wave height and wavelength, and can adapt to a wider ocean environment.

[0028] 3) The present invention adopts a counterweight at the lower part of the shell, which makes the overall stability good, has good anti-overturning performance, and has strong storm resistance.

[0029] 4) The shell of the present invention is made of a ceramic and resin composite material, which has the composite characteristics of high strength and low density. Since the surface is smoothed, it can effectively prevent the breeding and attachment of marine organisms.

[0030] 5) The present invention can be integrated into underwater and surface robots with unpowered motion fins in the open sea, generating electricity through the action of wind and waves, thereby effectively extending the service life of the battery, and having a beneficial impact on seabed topography exploration and scientific investigation. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0032] Figure 1 It is a cross-sectional schematic diagram of the present invention;

[0033] Figure 2 It is a three-dimensional partial cross-sectional schematic diagram of the present invention;

[0034] Figure 3 Schematic diagram of the structure of the permanent magnetic sphere of the present invention;

[0035] Figure 4 Schematic diagram of the appearance of the coil inlay and the permanent magnetic sphere of the present invention;

[0036] Figure 5 is a schematic cross-sectional view of a coil inlay of the present invention;

[0037] Figure 6 Schematic diagram of the coil inlay structure of the present invention;

[0038] Figure 7 This is a schematic diagram of the front view structure of the omnidirectional gimbal;

[0039] Figure 8 Schematic diagram of the three-dimensional structure of the omnidirectional gimbal;

[0040] Figure 9 It is a structural schematic diagram of the housing of the present invention;

[0041] Figure 10 Schematic diagram of the structure of the power storage device of the present invention;

[0042] Figure 11 This is a schematic diagram of the structure of the buoy light. DETAILED DESCRIPTION

[0043] In order to explain the present invention more clearly, the present invention is further described below in conjunction with preferred embodiments. Those skilled in the art should understand that the following specific description is illustrative rather than restrictive and should not be used to limit the scope of protection of the present invention.

[0044] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0045] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0046] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0047] See also Figure 1 As shown, as one aspect of the present invention, the present invention provides an offshore floating wave power generation device based on the pendulum oscillation principle, comprising a housing 4, a permanent magnetic sphere 1, a coil inlay 2, an omnidirectional balance ring 3 and a power storage device 5;

[0048] See also Figure 9 As shown, the housing 4 includes an upper housing 41 and a lower housing 42 , which are sealed and fixed to each other via end flanges, and an elliptical or approximately elliptical cavity 43 is formed inside the housing 4 ;

[0049] See also Figure 3 As shown, the permanent magnetic sphere 1 is arranged in the housing 4, and the left and right ends of the permanent magnetic sphere 1 are fixed in the middle of the housing 4;

[0050] See also Figure 4-Figure 6 As shown, the coil inlay 2 is arranged in the permanent magnetic sphere 1 and is abutted against the permanent magnetic sphere 1. It can be understood that after the permanent magnetic sphere 1 and the coil inlay 2 are abutted and fixed together, the relative position between the two will not change.

[0051] The coil inlay 2 includes a coil body 21 and a coil bundle 22. It can be understood that the coil bundle is wound around the coil body to form a power generation coil.

[0052] See also Figure 7 and Figure 8 As shown, the omnidirectional gimbal 3 includes an outer gimbal 31, an inner gimbal 34, and a rotating shaft 33; the rotating shaft 33 passes through the centers of the outer gimbal 31 and the inner gimbal 34, and the rotating shaft 33 and the outer gimbal 31 and the inner gimbal 34 are all rotatably connected. It can be understood that the "rotatable connection" can be achieved by providing rolling bearings at the connection between the two ends of the rotating shaft and the outer gimbal, and also providing rolling bearings at the connection between the rotating shaft and the inner gimbal.

[0053] The inner wall of the inner balance ring 34 is provided with a first permanent magnet 35 and a second permanent magnet 36 with opposite magnetic poles;

[0054] The outer gimbal 31 is provided with a plurality of rotating balls 32 on its circumference, and the rotating balls 32 can slide against the permanent magnetic sphere 1. With the above arrangement, the omnidirectional gimbal 3 can slide freely within the coil inlay 2, and the outer gimbal 31 and the inner gimbal 34 can rotate freely around the rotation axis 33.

[0055] The omnidirectional balance ring 3 is arranged inside the coil inlay 2;

[0056] See also Figure 1 and Figure 10 As shown, the power storage device 5 includes a rectifier circuit board 51 and a battery 52 , and the coil bundle 22 is connected to the rectifier circuit board 51 via a conductive wire.

[0057] In some embodiments, a counterweight (not shown) is provided at the bottom of the lower housing 42, such that the weight of the lower housing 42 is 2-4 times the weight of the upper housing. As can be appreciated, the counterweight provides the present invention with improved overall stability, anti-overturning performance, and strong storm resistance.

[0058] In some embodiments, the upper shell 41 is provided with fins 44 for stability during the floating process of the present invention.

[0059] In certain embodiments, the shell 4 is made of a ceramic and resin composite material, and the shell surface is smoothed, for example, by polishing. It is understood that the use of the ceramic and resin composite material provides the shell with a high-strength and low-density composite property, and the smooth surface treatment effectively prevents the growth and adhesion of marine organisms.

[0060] In some embodiments, the flanges of the upper shell 41 and the lower shell 42 are fixed together by bolts.

[0061] In some embodiments, there are at least three rotating balls on the circumference of the outer balance ring 31 .

[0062] In some embodiments, an electrical device 6 is provided at the top of the upper housing 41, and the electrical device 6 is connected to the battery 52 via a conductive wire. In the present invention, the electrical device includes but is not limited to underwater and surface robots, surface vehicles, submersibles, or buoy lights. Figure 1 and Figure 11 The buoy light 6 shown in the figure does not limit the present invention to a device used for buoy power generation; it is merely a specific illustration or schematic of an application example. In a specific implementation of the buoy light, the buoy light 6 can be placed inside the housing 4, and the upper shell 41 of the housing 4 needs to adopt a partially transparent design or add a window.

[0063] In some embodiments, an electrical device is provided outside the upper housing 41, and the battery is connected to the electrical device via a waterproof terminal. The battery power can be led out to other devices that need to be charged using the waterproof terminal.

[0064] In some embodiments, the power storage device 5 is disposed at the bottom of the lower housing 42 .

[0065] The operating principle of the present invention is as follows:

[0066] When the waves first hit the shell 4 of the device, the fins on the outer shell 4 are easily and continuously affected by the impact of wind and waves, and the upper part is offset. Due to the influence of inertia, the inner balance ring 34 and the outer balance ring 31 of the balance ring 3 will try to maintain their original stillness. Since the shell 4 is connected and fixed to the permanent magnetic ball ring 1 and the coil inlay 2, they will produce relative movement with the balance ring 3. This relative movement will cause the magnetic field of the vector combination of the permanent magnet 35 and the permanent magnet 36 on the balance ring and the permanent magnetic ball ring 1 to change sharply, and form a magnetic field change that passes through the coil body 21 on the coil inlay 2, thereby inducing an induced current in the coil body 21. The induced current is connected in combination, flows through the coil bundle 22 and reaches the rectifier circuit board 51 and the battery 52. The current rectifier circuit board 51 inverts and regulates the voltage of the current to form stable and storable electrical energy, which is stored in the battery 52.

[0067] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Those skilled in the art will appreciate that other variations or modifications based on the above description are possible. It is not possible to enumerate all embodiments here. Any obvious variations or modifications arising from the technical solution of the present invention remain within the scope of protection of the present invention.

Claims

1. An offshore floating wave power generation device based on the pendulum oscillation principle, characterized by: It includes a shell, a permanent magnetic sphere, a coil inlay, an omnidirectional balance ring and a power storage device; The housing comprises an upper housing and a lower housing, the upper housing and the lower housing being sealably fixed to each other via end flanges, and an elliptical or approximately elliptical cavity is formed inside the housing; The permanent magnetic sphere is arranged in the shell, and the left and right ends of the permanent magnetic sphere are fixed to the middle of the shell; The coil inlay is arranged in the permanent magnetic sphere and is close to the permanent magnetic sphere; The coil inlay comprises a coil body and a coil bundle; The omnidirectional gimbal includes an outer gimbal, an inner gimbal, and a rotating shaft; the rotating shaft passes through the centers of the outer and inner gimbals, and the rotating shaft is rotatably connected to the outer and inner gimbals; a first permanent magnet and a second permanent magnet with opposite magnetic poles are provided on the inner wall of the inner gimbal; a plurality of rotating balls are provided on the circumference of the outer gimbal, and the rotating balls can slide against the permanent magnet balls; The omnidirectional balance ring is arranged inside the coil inlay; The power storage device includes a rectifier circuit board and a battery, and the coil bundle is connected to the rectifier circuit board through a conductive wire.

2. The offshore floating wave power generation device according to claim 1, characterized in that: A counterweight is provided at the bottom of the lower shell so that the weight of the lower shell is 2-4 times the weight of the upper shell.

3. The offshore floating wave power generation device according to claim 1, characterized in that: The upper shell is provided with a fin-shaped body.

4. The offshore floating wave power generation device according to claim 1, characterized in that: The shell is made of a ceramic and resin composite material, and the shell surface is smoothed.

5. The offshore floating wave power generation device according to claim 4, characterized in that: The smoothing treatment on the shell surface refers to polishing.

6. The offshore floating wave power generation device according to claim 1, characterized in that: The flanges of the upper shell and the lower shell are fixed together by bolts.

7. The offshore floating wave power generation device according to claim 1, characterized in that: There are at least three rotating balls on the circumference of the outer balance ring.

8. The offshore floating wave power generation device according to claim 1, characterized in that: An electrical device is provided on the top of the upper shell, and the electrical device is connected to the battery through a conductive wire.

9. The offshore floating wave power generation device according to claim 1, characterized in that: An electrical device is provided outside the upper shell, and the battery is connected to the electrical device via a waterproof terminal.

10. The offshore floating wave power generation device according to claim 1, characterized in that: The electricity storage device is arranged at the bottom of the lower shell.

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