A wave energy harvesting structure for a finger electrode

Abstract

The application relates to a wave energy collection structure of a finger electrode, which specifically comprises a top cover and a bottom cover fixedly installed at the upper and lower ends of a cylinder, a central hole of the top cover and the bottom cover is fixedly connected with a rotating shaft, and a linear bearing is installed on the rotating shaft; the linear bearing is fixedly connected with a buoyant block, the buoyant block and a sealing cover form a sealed cavity, an electrode cylinder with a finger electrode structure on the inner side is fixedly installed on the inner side of the sealing cover, and a friction layer is installed between spring one and spring two. Advantages are that the overall structure can be fixedly installed on a marine target such as a buoy, the cylinder structure not only converts the irregular movement of sea waves into single-degree-of-freedom movement along the axial direction, but also has good self-protection capability, and the working life of the structure is increased.

Description

Technical Field

[0001] This invention relates to a wave energy harvesting structure with interdigitated electrodes, belonging to the field of wave energy harvesting technology. Background Technology

[0002] Despite decades of development, traditional electromagnetic ocean energy generation equipment still faces limitations in wave energy harvesting. The irregular motion and low frequency of waves severely hinder the widespread adoption of such equipment. Furthermore, the generally high equipment and installation / maintenance costs directly restrict the application of wave energy generation equipment based on electromagnetic principles.

[0003] Nano-triboelectric generators have attracted widespread attention across various industries due to their numerous application advantages. A novel energy harvesting technology based on triboelectricity and electrostatic induction, nano-triboelectric generators are characterized by their ability to effectively utilize low-frequency mechanical energy for power generation. This provides a new approach to ocean energy harvesting and is an indispensable part of the future recyclable energy field.

[0004] Nano-triboelectric generators are characterized by their simple structure and low cost, which makes them highly scalable. They also have low overall structural mass and are easy to install and maintain. They have already been applied in some self-powered fields and will provide more solutions in the future in fields such as marine engineering, machinery manufacturing, rail transportation, and aerospace. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a contact wave energy harvesting structure that is inexpensive, simple in structure, stable and reliable, has a long working life and can be easily installed.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0007] A wave energy harvesting structure with interdigitated electrodes includes: a top cover (1) and a bottom cover (7) are fixedly installed at the upper and lower ends of a cylinder (2); a shaft (11) is fixedly installed in the center hole of the top cover (1) and the bottom cover (7); the top cover (1) and the bottom cover (7) are provided with circular holes around their perimeter for seawater and air to freely enter and exit; a linear bearing (8) is installed on the shaft (11); the linear bearing (8) is fixedly connected to the buoyancy block (6); the buoyancy block (6) and the sealing cover (3) form a sealed cavity; an electrode cylinder (5) with an interdigitated electrode structure is fixedly installed inside the sealing cover (3); and a friction layer (4) is installed between spring one (10) and spring two (9).

[0008] The advantages of this invention are: the overall structure can be fixedly installed on buoys and other marine targets; the cylindrical structure not only transforms the irregular motion of ocean waves into a single degree of freedom motion along the axial direction, but also has excellent self-protection capabilities, increasing the working life of the structure. Attached Figure Description

[0009] Figure 1 The cross-section of the wave energy harvesting structure is shown;

[0010] Figure 2 Showing a front view of the top cover;

[0011] Figure 3 The diagram shows the unfolded shape of the inserted finger electrode inside the electrode cylinder.

[0012] Figure reference numerals:

[0013] 1. Top cover

[0014] 2. Cylinder

[0015] 3. Sealing cap

[0016] 4 Friction Layer

[0017] 5 Electrode cylinders

[0018] 6 buoyancy blocks

[0019] 7. Bottom Cover

[0020] 8 Linear bearings

[0021] 9. Spring Two

[0022] 10 Spring 1

[0023] 11-axis Detailed Implementation

[0024] Figure 1 The cross-section of the wave energy harvesting structure is shown. The wave energy harvesting structure with interdigitated electrodes described in this embodiment specifically includes: a top cover 1 and a bottom cover 7 are fixedly installed at the upper and lower ends of the cylinder 2; a shaft 11 is fixedly installed in the center hole of the top cover 1 and the bottom cover 7; the top cover 1 and the bottom cover 7 are provided with circular holes around their perimeter for seawater and air to freely enter and exit; a linear bearing 8 is installed on the shaft 11; the linear bearing 8 is fixedly connected to the buoyancy block 6; the buoyancy block 6 and the sealing cover 3 form a sealed cavity; the electrode cylinder 5 with interdigitated electrode structure on the inner side is fixedly installed inside the sealing cover 3; and the friction layer 4 is installed between spring 10 and spring 9.

[0025] Figure 2 The diagram shows a front view of the top cover 1, which is identical to the bottom cover 7. Except for the central hole for mounting the shaft 11, the top cover 1 has holes around its perimeter to allow seawater and air to freely enter and exit.

[0026] Figure 3 The diagram shows the unfolded structure of the inner ring of the electrode cylinder 5 with inserted finger electrodes.

[0027] When the wave energy harvesting structure is in operation, it will be fixed on a floating platform or other water surface platform, with part of the structure submerged in seawater. The buoyancy block 6 can keep the internal structure on the water surface under the action of seawater. The rise and fall of the waves will cause the entire internal structure to rise and fall along the axis. This structure can lift the power generation structure away from the water surface.

[0028] Friction layer 4 is installed between spring 10 and spring 9. When the internal structure moves up and down, friction layer 4 will move up and down periodically under the combined action of spring 10 and spring 9. During the movement, friction layer 4 will contact and separate from the two electrodes of the finger electrode inside the electrode cylinder 5, and generate electricity through the coupling effect of friction electrification and electrostatic induction.

Claims

1. A wave energy harvesting structure with interdigitated electrodes, specifically comprising: a top cover (1) and a bottom cover (7) fixedly installed at the upper and lower ends of a cylinder (2); a shaft (11) fixedly installed in the center hole of the top cover (1) and the bottom cover (7); circular holes for seawater and air to freely enter and exit are provided around the top cover (1) and the bottom cover (7); a linear bearing (8) is installed on the shaft (11); the linear bearing (8) is fixedly connected to a buoyancy block (6); the buoyancy block (6) and the sealing cover (3) form a sealed cavity; an electrode cylinder (5) with an interdigitated electrode structure is fixedly installed inside the sealing cover (3); a friction layer (4) is installed between spring one (10) and spring two (9); characterized in that, The friction layer (4), spring one (10) and spring two (9) all have gaps with the inside of the sealing cover (3). The friction layer (4) is installed between spring one (10) and spring two (9). When the internal structure rises and falls, the friction layer (4) will move up and down periodically under the combined action of spring one (10) and spring two (9). During the movement, the friction layer (4) will contact and separate from the two electrodes of the inner insert electrode of the electrode cylinder (5). Power generation is achieved through the coupling effect of friction electrification and electrostatic induction. The material of the inner insert electrode of the electrode cylinder (5) is aluminum. The material of the friction layer (4) is polytetrafluoroethylene (PTFE).

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