Device and method for harvesting multi-directional vibration energy from transmission lines based on nanogenerators

Abstract

The present invention relates to the field of power transmission line monitoring technology, and more particularly to a multi-directional vibration energy harvesting device for power transmission lines based on nanogenerators. The device comprises a friction nano-power generation assembly connected to a clamping assembly via a buffer assembly. The assembly comprises a housing and a horizontal electrode group, a circumferential electrode group, and a triboelectric element disposed therein. The triboelectric element is capable of periodic collisions between the horizontal electrode groups and the circumferential electrode groups, capturing vibration energy in any direction perpendicular to the power transmission line as well as multi-directional energy in the horizontal direction, thereby harvesting multi-directional vibration energy from the power transmission line. The power generation chamber employs an easily expandable modular structure and is stacked with multiple chambers, effectively improving energy harvesting efficiency. The friction nano-power generation assembly is connected to the clamping assembly via a buffer assembly and is mounted on the power transmission line via the clamping assembly. The provision of the buffer assembly effectively reduces the impact of vibration on the device itself, thereby improving its stability and service life.

Description

Technical Field

[0001] The present invention relates to the technical field of power transmission line monitoring, and in particular to a device and method for collecting multi-directional vibration energy of a power transmission line based on a nanogenerator. Background Art

[0002] With global economic development and population growth, the demand for electricity continues to grow. Simultaneously, the widespread adoption and application of clean energy is accelerating the transformation of power systems. Therefore, the development of power transmission technology has become increasingly important. Currently, HVDC has become the mainstream technology in the power transmission sector. Compared with traditional AC transmission, HVDC offers advantages such as low transmission losses, long transmission distances, and high stability. Furthermore, flexible AC transmission technology is a research hotspot in the power transmission sector. This technology can effectively address power system instability and improve operational efficiency and reliability. In the future, power transmission technology will continue to advance to meet the demand for clean energy transmission.

[0003] The triboelectric nanogenerator (TENG) is a novel energy conversion device that converts mechanical energy into electrical energy. Due to its high sensitivity, high output voltage, and low noise, it has broad application prospects in the field of power transmission.

[0004] In power transmission lines, due to various reasons (such as weather, contact with trees, etc.), the wires will be subjected to mechanical vibration and friction. This mechanical energy can be converted into electrical energy through TENG. Therefore, by installing TENG on the transmission line, it can be converted into electrical energy, thus realizing energy recycling.

[0005] Furthermore, TENGs can be used for monitoring and maintenance of power transmission lines. Because TENGs can sense tiny mechanical vibrations and deformations, they can be installed on transmission lines to monitor their status in real time. If any abnormalities are detected, maintenance and repairs can be carried out promptly, thereby improving the reliability and safety of the power system.

[0006] The continued development and application of TENG technology will make greater contributions to energy conservation, emission reduction, and intelligent construction of power systems. However, due to the random direction of wind under natural conditions, traditional nanogenerators can only capture energy from a single direction, greatly reducing the efficiency of the energy harvester. Therefore, how to effectively capture the multi-directional vibration energy of transmission lines has become a technical problem that technicians in this field need to solve. Summary of the Invention

[0007] The present invention provides a device and method for collecting multi-directional vibration energy of a power transmission line based on a nanogenerator, which can effectively solve the problems in the background technology.

[0008] In order to achieve the above object, the technical solution adopted by the present invention is:

[0009] A multi-directional vibration energy harvesting device for a power transmission line based on a nanogenerator, comprising a friction nanogenerator component, a buffer component, and a clamping component, wherein the friction nanogenerator component is connected to the clamping component via the buffer component;

[0010] The triboelectric nanometer power generation assembly includes a shell and a horizontal electrode group, a peripheral electrode group and a triboelectric element arranged therein, wherein the peripheral electrode group is vertically arranged on the horizontal electrode group and forms a cavity, and the cavity is stacked with multiple elements in a direction perpendicular to the horizontal electrode group;

[0011] The two adjacent horizontal electrode groups cooperate with the circumferential electrode group therebetween to form a power generation cavity, and a plurality of the triboelectric elements are arranged in the power generation cavity.

[0012] Furthermore, the horizontal electrode group includes a support plate and a lower electrode layer and an upper electrode layer respectively arranged on both sides thereof;

[0013] In the two adjacent horizontal electrode group structures, the lower electrode layer and the upper electrode layer are arranged opposite to each other, and cooperate with the peripheral electrode group located therebetween to form the power generation cavity.

[0014] Furthermore, the peripheral electrode group includes a first ring plate and a second ring plate arranged concentrically, wherein the second ring plate is located on the inner circle of the first ring plate and is connected to the first ring plate via a connecting plate;

[0015] An outer electrode layer is provided on the inner ring of the first ring plate, and an intermediate electrode layer and an inner electrode layer are provided on the outer ring and inner ring of the second ring plate respectively. The second ring plate divides the power generation cavity into an inner cavity and an outer cavity, and a plurality of the friction electric elements are provided in both the inner cavity and the outer cavity.

[0016] Furthermore, in any of the power generation chambers, the triboelectric element cooperates with the upper electrode layer and the lower electrode layer to form a first power generation unit;

[0017] The triboelectric element cooperates with the outer electrode layer and the intermediate electrode layer to form a second power generation unit;

[0018] The triboelectric element cooperates with the lower electrode layer and the inner electrode layer to form a third power generation unit.

[0019] Furthermore, the horizontal electrode group adopts a dielectric-dielectric material structure, the lower electrode layer includes a lower buffer layer and a lower electrode sequentially covered on the support plate, and the upper electrode layer includes an upper buffer layer, an upper electrode and an upper dielectric layer sequentially covered on the support plate;

[0020] The circumferential electrode group adopts a dielectric-dielectric material structure, the outer electrode layer includes a first buffer layer and an outer electrode sequentially covered on the first ring plate, the intermediate electrode layer includes a second buffer layer, an intermediate electrode and an outer dielectric layer sequentially covered on the second ring plate, and the inner electrode layer includes a third buffer layer, an inner electrode and an inner dielectric layer sequentially covered on the second ring plate.

[0021] Furthermore, the support plate is configured as a circular plate corresponding to the first ring plate and is concentrically disposed with the first ring plate;

[0022] The shell is configured as a cylindrical structure, and an end cover is provided at one end thereof. The axis of the power generation chamber is coaxially arranged with the axis of the shell, and the outer diameter thereof is adapted to the inner diameter of the shell.

[0023] Furthermore, a first guide groove and a second guide groove are respectively provided on the upper electrode layer and the lower electrode layer, and the first guide groove and the second guide groove are both provided along the radial direction of the support plate;

[0024] The triboelectric element includes a first nylon ball and a second nylon ball respectively disposed in the inner cavity and the outer cavity, wherein the size of the first nylon ball is larger than that of the second nylon ball.

[0025] Furthermore, a partition is provided on one side of the support plate where the lower electrode layer is provided, and the partition is provided at the edge of the support plate in a ring shape.

[0026] Furthermore, the upper electrode layer is provided on the inner side of the end cover corresponding to the cavity superimposed at the top, and cooperates with the cavity to form the power generation cavity.

[0027] Furthermore, the buffer assembly includes three springs evenly distributed around the end cover, a mounting portion is provided on the end cover, and a mounting groove is provided on the mounting portion corresponding to the spring;

[0028] The clamping assembly includes a mounting plate and a clamping seat arranged thereon, the two ends of the spring are respectively connected to the mounting portion and the support plate, a through hole is opened on the clamping seat, and the axial direction of the through hole is perpendicular to the axial direction of the shell.

[0029] A method for harvesting multi-directional vibration energy from power transmission lines based on a nanogenerator employs the aforementioned multi-directional vibration energy harvesting device for power transmission lines. Multiple cavities formed by horizontal electrode groups and circumferential electrode groups are stacked and arranged within a housing to form a power generation cavity. Multiple triboelectric elements disposed within the power generation cavity collide with the inner wall of the cavity to generate electrical energy.

[0030] The shell is connected to the clamping assembly through a buffer assembly and is installed on the transmission line through the clamping assembly. The transmission line vibrates and drives the friction electric element to periodically collide between the horizontal electrode groups and the circumferential electrode groups, forming current in the external circuit.

[0031] The beneficial effects of the present invention are:

[0032] In the present invention, multiple triboelectric elements are arranged in the power generation cavity to capture vibration energy in any direction perpendicular to the transmission line and multi-directional energy in the horizontal direction, thereby realizing multi-directional vibration energy collection of the transmission line, and multiple power generation cavities are stacked to effectively improve the energy collection efficiency.

[0033] The friction nano-power generation component is connected to the clamping component through a buffer component and is installed on the transmission line through the clamping component; the setting of the buffer component can effectively reduce the impact of vibration on the device itself and improve the stability and service life of the device.

[0034] When the transmission line vibrates, the triboelectric elements collide periodically between the horizontal electrode groups and the circumferential electrode groups. The triboelectric elements and the electrode materials have different electron binding abilities, which will cause charge transfer at the contact surface, forming a potential difference, and thus forming an electric current in the external circuit.

[0035] The power generation chamber adopts an easily expandable modular structure so that more power generation chambers can be added as needed; the power generation chamber is encapsulated in the shell to protect it from environmental influences, ensuring that the device can still work reliably under strong winds, extreme temperatures and other harsh conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0037] Figure 1 This is a schematic diagram of the structure of the multi-directional vibration energy collection device for power transmission lines in the present invention;

[0038] Figure 2 This is a schematic diagram of the explosion of the multi-directional vibration energy harvesting device for power transmission lines in the present invention;

[0039] Figure 3 Schematic diagram of the superposition of the power generation chamber in the present invention;

[0040] Figure 4 Schematic diagram of the structure of the peripheral electrode group in the present invention;

[0041] Figure 5 Schematic diagram of the structure of the horizontal electrode group in the present invention;

[0042] Figure 6 Schematic diagram of the elevation angle of the horizontal electrode group in the present invention;

[0043] Figure 7 is a top view of the cavity in the present invention;

[0044] Figure 8 A schematic diagram of the power generation cavity structure formed by the shell end cover and the cavity in the present invention;

[0045] Figure 9 This is a schematic diagram of the cooperation between the clamping assembly and the buffer assembly in the present invention;

[0046] Figure 10 Schematic diagram of the structure of electrodes in the power generation cavity of the present invention;

[0047] Figure 11 Schematic diagram of the vibration energy collection process of the horizontal electrode group in the present invention;

[0048] Figure 12 This is a schematic diagram of the wiring of each power generation unit in the power generation chamber of the present invention.

[0049] Figure 1: 1. Friction nano-power generation component; 11. Shell; 111. End cover; 112. Mounting portion; 112a. Mounting groove; 12. Horizontal electrode group; 121. Support plate; 121a. Partition plate; 122. Lower electrode layer; 122a. Lower buffer layer; 122b. Lower electrode; 122c. Second guide groove; 123. Upper electrode layer; 123a. Upper buffer layer; 123b. Upper electrode; 123c. Upper dielectric layer; 123d. First guide groove; 13. Peripheral electrode group; 131. First ring plate; 132. Second ring plate; 133. Connecting plate; 134. External electrode Electrode layer; 134a, first buffer layer; 134b, outer electrode; 135, intermediate electrode layer; 135a, second buffer layer; 135b, intermediate electrode; 135c, outer dielectric layer; 136, inner electrode layer; 136a, third buffer layer; 136b, inner electrode; 136c, inner dielectric layer; 14, triboelectric element; 141, first nylon ball; 142, second nylon ball; 15, cavity; 16, power generation cavity; 161, inner cavity; 162, outer cavity; 2, buffer assembly; 21, spring; 3, clamping assembly; 31, mounting plate; 32, clamping seat; 321, through hole. DETAILED DESCRIPTION

[0050] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0051] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0052] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used in this specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0053] like Figures 1 to 12 The multi-directional vibration energy collection device for transmission lines based on nanogenerators shown includes a friction nano-power generation component 1, a buffer component 2 and a clamping component 3. The friction nano-power generation component 1 is connected to the clamping component 3 through the buffer component 2; the friction nano-power generation component 1 includes a shell 11 and a horizontal electrode group 12, a circumferential electrode group 13 and a friction electric element 14 arranged therein. The circumferential electrode group 13 is vertically arranged on the horizontal electrode group 12 and forms a cavity 15. There are multiple cavities 15 stacked in a direction perpendicular to the horizontal electrode group 12; two adjacent horizontal electrode groups 12 are combined with the circumferential electrode group 13 between the two to form a power generation cavity 16, and there are multiple friction electric elements 14 arranged in the power generation cavity 16.

[0054] The present invention proposes a multi-directional vibration energy collection device for transmission lines based on nanogenerators. The device captures vibration energy in any direction perpendicular to the transmission line and multi-directional energy in the horizontal direction by multiple triboelectric elements 14 arranged in a power generation cavity 16, thereby realizing multi-directional vibration energy collection of the transmission line. In addition, multiple power generation cavities 16 are stacked to effectively improve the energy collection efficiency.

[0055] The friction nano power generation component 1 is connected to the clamping component 3 through the buffer component 2 and is installed on the transmission line through the clamping component 3; the setting of the buffer component 2 can effectively reduce the impact of vibration on the device itself, and improve the stability and service life of the device.

[0056] When the transmission line vibrates, the triboelectric element 14 periodically collides between the horizontal electrode group 12 and the circumferential electrode group 13. The triboelectric element 14 and the electrode material have different electron binding abilities, which will cause charge transfer on the contact surface, forming a potential difference, thereby forming a current in the external circuit.

[0057] The power generation chamber 16 adopts an easily expandable modular structure so that more power generation chambers 16 can be added as needed; the power generation chamber 16 is encapsulated in the shell 11 to protect it from environmental influences, ensuring that the device can still work reliably under strong winds, extreme temperatures and other harsh conditions.

[0058] In this embodiment, if Figure 5 and Figure 6 As shown, the horizontal electrode group 12 includes a support plate 121 and a lower electrode layer 122 and an upper electrode layer 123 respectively arranged on both sides thereof; in the structure of two adjacent horizontal electrode groups 12, the lower electrode layer 122 and the upper electrode layer 123 are arranged opposite to each other, and cooperate with the circumferential electrode group 13 located therebetween to form a power generation cavity 16.

[0059] Further, such as Figure 4 As shown, the circumferential electrode group 13 includes a first ring plate 131 and a second ring plate 132 arranged concentrically. The second ring plate 132 is located in the inner circle of the first ring plate 131 and is connected to the first ring plate 131 through a connecting plate 133; an outer electrode layer 134 is provided on the inner circle of the first ring plate 131, and an intermediate electrode layer 135 and an inner electrode layer 136 are provided on the outer circle and inner circle of the second ring plate 132 respectively. The second ring plate 132 divides the power generation cavity 16 into an inner cavity 161 and an outer cavity 162, and a plurality of friction electric elements 14 are provided in both the inner cavity 161 and the outer cavity 162.

[0060] The circumferential electrode group 13 includes a first ring plate 131 and a second ring plate 132, each with an inner electrode layer 136, a middle electrode layer 135, and an outer electrode layer 134. The horizontal electrode group 12 includes an upper electrode layer 123 and a lower electrode layer 122, and is arranged on both sides of the support plate 121. The design of the horizontal and vertical electrodes can collect vibration energy in multiple directions.

[0061] As a preference of the previous embodiment, a first guide groove 123d and a second guide groove 122c are respectively provided on the upper electrode layer 123 and the lower electrode layer 122, and the first guide groove 123d and the second guide groove 122c are both arranged radially along the support plate 121; the friction electric element 14 includes a first nylon ball 141 and a second nylon ball 142 respectively arranged in the inner cavity 161 and the outer cavity 162, and the size of the first nylon ball 141 is larger than that of the second nylon ball 142.

[0062] In a specific implementation, 7 mm nylon balls are placed between the first ring plate 131 and the second ring plate 132, forming a power generation unit between the upper electrode layer 123, the lower electrode layer 122, the outer electrode layer 134, and the middle electrode layer 135. 12 mm nylon balls are placed on the inner ring of the second ring plate 132, forming a power generation unit between the upper electrode layer 123, the lower electrode layer 122, and the inner electrode layer 136.

[0063] Please refer to Figure 12 As shown, within any power generation cavity 16, the triboelectric element 14, in conjunction with the upper electrode layer 123 and the lower electrode layer 122, forms a first power generation unit; the triboelectric element 14, in conjunction with the outer electrode layer 134 and the middle electrode layer 135, forms a second power generation unit; and the triboelectric element 14, in conjunction with the lower electrode layer 122 and the inner electrode layer 136, forms a third power generation unit. By optimizing the structure of the peripheral electrode group 13, the power generation cavity 16 is partitioned, providing more power generation units.

[0064] In this embodiment, the horizontal electrode group 12 adopts a dielectric-dielectric material structure, the lower electrode layer 122 includes a lower buffer layer 122a and a lower electrode 122b sequentially covered on the support plate 121, and the upper electrode layer 123 includes an upper buffer layer 123a, an upper electrode 123b and an upper dielectric layer 123c sequentially covered on the support plate 121; the circumferential electrode group 13 adopts a dielectric-dielectric material structure, the outer electrode layer 134 includes a first buffer layer 134a and an outer electrode 134b sequentially covered on the first ring plate 131, the intermediate electrode layer 135 includes a second buffer layer 135a, an intermediate electrode 135b and an outer dielectric layer 135c sequentially covered on the second ring plate 132, and the inner electrode layer 136 includes a third buffer layer 136a, an inner electrode 136b and an inner dielectric layer 136c sequentially covered on the second ring plate 132.

[0065] See also Figure 10 The schematic diagram of the structure of each electrode in the outer cavity 162 of the power generation cavity 16 is shown, wherein the arrangement of each dielectric layer can prevent air breakdown between the electrode pairs. Figure 11 As shown, the vibration energy collection process of the horizontal electrode group 12 is used as an example. The nylon ball is electrified by friction with the lower electrode 122b, causing it to become negatively charged and then bounce toward the upper dielectric layer 123c (at this point, the lower electrode 122b is positively charged). When the nylon ball approaches the upper dielectric layer 123c, the upper electrode 123b, under the action of electrostatic induction, attracts the positive charge on the lower electrode 122b to the upper electrode 123b to balance the potential difference, generating a current (at this point, the lower electrode 122b is uncharged). Finally, when the negatively charged nylon ball returns to the lower electrode 122b, electrostatic induction causes the charge on the surface of the lower electrode 122b to change, generating a transient current. The power generation process of the peripheral electrode group 13 is similar, except that the peripheral electrode group 13 uses horizontal vibration energy to generate power.

[0066] Furthermore, a separator 121a is provided on one side of the support plate 121, which is provided with the lower electrode layer 122. The separator 121a is arranged in a ring shape at the edge of the support plate 121. The outer electrode layer 134 and the lower electrode layer 122 have the same polarity. The provision of the separator 121a prevents the nylon ball from bouncing off the upper electrode layer 123, and its own charge is neutralized by the horizontal electrode group 12.

[0067] In this embodiment, support plate 121 is configured as a circular plate corresponding to first ring plate 131 and is concentrically arranged with first ring plate 131. Housing 11 is configured as a cylindrical structure with an end cap 111 at one end. The axis of power generation chamber 16 is coaxial with the axis of housing 11, and its outer diameter matches the inner diameter of housing 11. The cylindrical housing 11 facilitates installation on power transmission lines, occupies minimal space, and perfectly adapts to the structure of power generation chamber 16, making the triboelectric nanometer power generation assembly 1 compact.

[0068] An upper electrode layer 123 is provided on the inner side of the end cap 111, corresponding to the cavity 15 superimposed on the top, and cooperates with the cavity 15 to form a power generation cavity 16. The upper electrode layer 123 provided on the end cap 111 can cooperate with the cavity 15 at the top to form a power generation cavity 16, thereby improving power generation efficiency.

[0069] In this embodiment, if Figure 9 As shown, the buffer assembly 2 includes three springs 21 evenly distributed around the end cap 111. The end cap 111 is provided with a mounting portion 112, and mounting grooves 112a are formed on the mounting portion 112 corresponding to the springs 21. The clamping assembly 3 includes a mounting plate 31 and a clamping seat 32 disposed thereon. The ends of the springs 21 are connected to the mounting portion 112 and the support plate 121, respectively. The clamping seat 32 has a through hole 321, which is axially perpendicular to the axial direction of the housing 11. The clamping assembly 3 makes installation and removal of the device simple and convenient.

[0070] The present invention also discloses a method for collecting multi-directional vibration energy of a transmission line based on a nanogenerator. The multi-directional vibration energy collection device for a transmission line described above is used, and multiple cavities formed by horizontal electrode groups and circumferential electrode groups are stacked and arranged inside a shell to form a power generation cavity. Electric energy is generated by the collision of multiple friction electric elements arranged in the power generation cavity with the inner wall of the power generation cavity. The shell is connected to the clamping assembly through a buffer assembly and is installed on the transmission line through the clamping assembly. The transmission line vibrates and drives the friction electric elements to periodically collide between the horizontal electrode groups and the circumferential electrode groups, thereby forming a current in the external circuit.

[0071] Those skilled in the art will appreciate that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-directional vibration energy harvesting device for power transmission lines based on nanogenerators, characterized in that: It includes a friction nanometer power generation component, a buffer component and a clamping component, wherein the friction nanometer power generation component is connected to the clamping component through the buffer component; The triboelectric nanometer power generation assembly includes a shell and a horizontal electrode group, a peripheral electrode group and a triboelectric element arranged therein, wherein the peripheral electrode group is vertically arranged on the horizontal electrode group and forms a cavity, and the cavity is stacked with multiple elements in a direction perpendicular to the horizontal electrode group; The two adjacent horizontal electrode groups cooperate with the circumferential electrode group therebetween to form a power generation cavity, and a plurality of the triboelectric elements are provided in the power generation cavity; The horizontal electrode group includes a support plate and a lower electrode layer and an upper electrode layer respectively arranged on both sides of the support plate; In the two adjacent horizontal electrode group structures, the lower electrode layer and the upper electrode layer are arranged opposite to each other, and cooperate with the peripheral electrode group located therebetween to form the power generation cavity; The housing is configured as a cylindrical structure, and an end cover is provided at one end thereof. The axis of the power generation chamber is coaxially arranged with the axis of the housing, and the outer diameter thereof is adapted to the inner diameter of the housing; The upper electrode layer is provided on the inner side of the end cover and corresponds to the cavity superimposed on the top, and cooperates with the cavity to form the power generation cavity; The peripheral electrode group includes a first ring plate and a second ring plate arranged concentrically, wherein the second ring plate is located on the inner circle of the first ring plate and is connected to the first ring plate through a connecting plate; An outer electrode layer is provided on the inner ring of the first ring plate, and an intermediate electrode layer and an inner electrode layer are provided on the outer ring and inner ring of the second ring plate respectively. The second ring plate divides the power generation cavity into an inner cavity and an outer cavity, and a plurality of the triboelectric elements are provided in both the inner cavity and the outer cavity. The support plate is configured as a circular plate corresponding to the first ring plate and is concentrically arranged with the first ring plate; A first guide groove and a second guide groove are respectively provided on the upper electrode layer and the lower electrode layer, and the first guide groove and the second guide groove are both provided along the radial direction of the support plate; The triboelectric element includes a first nylon ball and a second nylon ball respectively disposed in the inner cavity and the outer cavity, wherein the size of the first nylon ball is larger than that of the second nylon ball.

2. The multi-directional vibration energy harvesting device for power transmission lines based on nanogenerators according to claim 1 is characterized in that: In any of the power generation chambers, the triboelectric element cooperates with the upper electrode layer and the lower electrode layer to form a first power generation unit; The triboelectric element cooperates with the outer electrode layer and the intermediate electrode layer to form a second power generation unit; The triboelectric element cooperates with the lower electrode layer and the inner electrode layer to form a third power generation unit.

3. The multi-directional vibration energy harvesting device for power transmission lines based on nanogenerators according to claim 2 is characterized in that: The horizontal electrode group adopts a dielectric-dielectric material structure, the lower electrode layer includes a lower buffer layer and a lower electrode sequentially covering the support plate, and the upper electrode layer includes an upper buffer layer, an upper electrode and an upper dielectric layer sequentially covering the support plate; The circumferential electrode group adopts a dielectric-dielectric material structure, the outer electrode layer includes a first buffer layer and an outer electrode sequentially covered on the first ring plate, the intermediate electrode layer includes a second buffer layer, an intermediate electrode and an outer dielectric layer sequentially covered on the second ring plate, and the inner electrode layer includes a third buffer layer, an inner electrode and an inner dielectric layer sequentially covered on the second ring plate.

4. The multi-directional vibration energy harvesting device for power transmission lines based on nanogenerators according to claim 1 is characterized in that: A partition is provided on one side of the support plate provided with the lower electrode layer, and the partition is provided at the edge of the support plate in a ring shape.

5. The multi-directional vibration energy harvesting device for power transmission lines based on nanogenerators according to claim 1 is characterized in that: The buffer assembly includes three springs evenly distributed around the end cover, a mounting portion is provided on the end cover, and mounting grooves are provided on the mounting portion corresponding to the springs; The clamping assembly includes a mounting plate and a clamping seat arranged thereon, the two ends of the spring are respectively connected to the mounting portion and the support plate, a through hole is opened on the clamping seat, and the axial direction of the through hole is perpendicular to the axial direction of the shell.

6. A method for harvesting multi-directional vibration energy from a transmission line based on a nanogenerator, characterized in that: The multi-directional vibration energy harvesting device for power transmission lines according to any one of claims 1 to 5 is used, wherein a plurality of cavities formed by the horizontal electrode groups and the circumferential electrode groups are stacked and arranged inside the housing to form a power generation cavity, and electrical energy is generated by the collision of the plurality of triboelectric elements arranged in the power generation cavity with the inner wall of the power generation cavity; The shell is connected to the clamping assembly through a buffer assembly and is installed on the transmission line through the clamping assembly. The transmission line vibrates and drives the friction electric element to periodically collide between the horizontal electrode groups and the circumferential electrode groups, forming current in the external circuit.

Images