A gas-assisted wave energy generator and electric energy storage system

Abstract

The present invention relates to the technical field of ocean energy power generation equipment, and in particular to a gas-assisted wave energy generator and an electric energy storage system. A gas-assisted wave energy generator of the present invention comprises: a floating plate, a piston assembly, an airbag assembly, a ventilation assembly, a power generation assembly, and a shell. The present invention utilizes the waves to drive the floating plate and the piston cylinder to rise and fall, so that the piston cylinder and the fixed push rod produce relative movement, causing the volume of the piston chamber to change, and the airbag is synchronously contracted or expanded through the connecting piece, thereby changing the distance between the airbag and the support plate to achieve contact separation power generation; and the present invention adopts the airbag in combination with a flexible substrate to achieve soft contact power generation between friction films; compared with the existing means of improving the output performance of friction materials, the present invention has low requirements for friction materials and low manufacturing difficulty; compared with hard contact power generation, the present invention can increase the contact area between friction films, thereby improving power generation performance.

Description

Technical Field

[0001] The present invention relates to the technical field of ocean energy power generation equipment, and in particular to a gas-assisted ocean wave energy generator and an electric energy storage system. Background Art

[0002] With the growth of the global economy and the increase in population, the consumption of fossil energy is getting faster and faster, which puts tremendous pressure on energy supply. Ocean energy is large in scale, sustainable and stable. It is a clean and renewable energy source with great potential to make up for the gap in fossil energy supply. At present, distributed wave energy collection is mostly powered by batteries, and equipped with the relatively mature photovoltaic power generation technology, or charged by small wind turbines. However, these traditional energy acquisition technologies still have some technical blind spots, and we need to be more fully prepared to face the exploration and challenges in the ocean field in the future.

[0003] Friction nanogenerators can convert natural mechanical energy into electrical energy output. They are small, low cost and easy to manufacture, and are widely used in high entropy energy harvesting, self-driven sensing and high-voltage power supply. Friction nanogenerators have unique advantages in obtaining low-frequency mechanical energy, so they are particularly suitable for collecting marine energy.

[0004] Contact-separation power generation can be used as a power generation mechanism for designing friction nanogenerators to collect wave energy. However, there is room for improvement in the power generation performance of existing contact-separation power generation. In order to achieve the improvement in power generation performance, researchers now commonly use methods to improve the output performance of friction materials, such as material selection, surface physical and chemical modification, ion implantation, charge pumps, air breakdown effects, and structural design and optimization. Although these methods and techniques have significant effects, the production process of their materials is complex and the consistency cannot be fully guaranteed. A high level of technical expertise is required as a basis, which makes manufacturing difficult. Moreover, the use of some principles and structures is limited to specific applications, resulting in poor versatility. Therefore, it is difficult to balance the power generation performance and manufacturing difficulty of existing friction nanogenerators designed based on contact-separation power generation.

[0005] After analysis, the inventors found that this was because: for the sake of structural reliability, existing designs basically adopted hard contact power generation, resulting in a small contact area between the friction layers, thus causing low power generation performance. Summary of the invention

[0006] Based on this, it is necessary to provide a gas-assisted wave energy generator and power storage system to address the problem that it is difficult to balance the power generation performance and manufacturing difficulty of existing wave energy friction nanogenerators.

[0007] The present invention is implemented by the following technical solutions:

[0008] In a first aspect, the present invention discloses a gas-assisted wave energy generator, comprising: a floating plate, a piston assembly, an airbag assembly, a ventilation assembly, a power generation assembly, and a casing.

[0009] The floating board is used to float on the sea surface.

[0010] The piston assembly is used to convert wave energy into piston movement; the piston assembly includes: a piston cylinder, a push rod; the piston cylinder axially and vertically penetrates the floating plate; the piston cylinder is connected to the floating plate and moves together; the push rod is used to be fixed in a vertical and immovable position at the sea level; one end of the push rod extends into the piston cylinder from the bottom of the piston cylinder, and forms a dynamic seal with the inner wall of the piston cylinder to form a piston cavity.

[0011] The airbag assembly is located above the piston assembly and includes a support plate 1, a support plate 2, and an airbag 1; the support plate 1 and the support plate 2 are arranged at intervals and the spacing is fixed; the airbag 1 is located between the support plate 1 and the support plate 2 and is connected to the support plate 1.

[0012] The ventilation assembly connects the piston cavity with the airbag 1 and is used to change the distance between the airbag 1 and the support plate 2 through the movement of the piston.

[0013] The power generation component is arranged between the airbag 1 and the support plate 2, and is used to realize contact-separation power generation by changing the distance between the airbag 1 and the support plate 2. The power generation component includes a plurality of flexible substrates; the plurality of flexible substrates form a retractable array; a friction film 1 and a friction film 2 are arranged between two adjacent flexible substrates; the friction film 1 and the friction film 2 move together with the flexible substrate; and the friction film 1 and the friction film 2 have different abilities to lose charge.

[0014] Among them, when the distance between the airbag 1 and the support plate 2 changes, the two adjacent flexible substrates gradually change from state 1 to state 2, or from state 2 to state 1; state 1 is that the two adjacent flexible substrates are separated, and the friction film 1 and the friction film 2 located between the two adjacent flexible substrates are also separated; state 2 is that the two adjacent flexible substrates are deformed and contacted, and the friction film 1 and the friction film 2 located between the two adjacent flexible substrates are in large-area contact.

[0015] The outer shell is connected to the outer top of the piston cylinder and is used to encapsulate the airbag component, the ventilation component and the power generation component.

[0016] The gas-assisted wave energy generator is realized according to the method or process of the embodiment of the present disclosure.

[0017] In a second aspect, the present invention discloses an electric energy storage system, comprising: a gas-assisted wave energy generator as disclosed in the first aspect, and a peripheral circuit.

[0018] The peripheral circuit is electrically connected to the gas-assisted wave energy generator and is used for storing and releasing the electric energy generated by the gas-assisted wave energy generator.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The present invention utilizes the sea waves to drive the floating plate and the piston cylinder to rise and fall, so that the piston cylinder and the fixed push rod produce relative movement, causing the volume of the piston chamber to change, and the airbag is synchronously contracted or expanded through the connecting piece, thereby changing the distance between the airbag and the support plate to achieve contact separation type power generation; and the present invention adopts the airbag in combination with the flexible substrate to achieve soft contact power generation between the friction films; compared with the existing means of improving the output performance of the friction material, the present invention has low requirements for the friction material and low manufacturing difficulty; compared with hard contact power generation, the present invention can increase the contact area between the friction films, thereby improving the power generation performance.

[0021] 2. The power generation unit of the present invention is located above the piston cylinder and is protected by the outer shell, which can avoid being immersed in water for a long time, reduce the difficulty of sealing and anti-corrosion of the device, and play a certain positive role in maintaining the power generation performance of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 A structural diagram of a gas-assisted wave energy generator provided by the present invention;

[0024] Figure 2 for Figure 1 A cross-sectional view of

[0025] Figure 3 for Figure 2 Structural diagram of the middle floating plate;

[0026] Figure 4 for Figure 2 The structural diagram of the piston cylinder;

[0027] Figure 5 for Figure 2 The structural diagram of the middle putter;

[0028] Figure 6 for Figure 2 Structural diagram of the middle counterweight;

[0029] Figure 7 for Figure 2Structural diagram of the airbag assembly, connectors, and power generation assembly;

[0030] Figure 8 for Figure 7 The structural diagram of the middle airbag 1;

[0031] Fig. 9 for Figure 7 Structural diagram of the power generation components;

[0032] Fig.10 for Figure 7 Schematic diagram of the relative positions of the friction film 1, friction film 2 and conductive film 2;

[0033] Fig.11 for Figure 7 Schematic diagram of the relative positions of the friction film 1, the conductive film 1, the friction film 2, and the conductive film 2;

[0034] Fig.12 for Figure 2 Internal structure diagram of the middle shell;

[0035] Fig.13 for Figure 3 Structural diagram of the connecting parts;

[0036] Fig.14 A structural diagram of the electric energy storage system provided by the present invention.

[0037] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0038] 100, airbag assembly, 110, airbag 1, 120, vent nozzle;

[0039] 200, power generation component, 210, flexible substrate, 220, connector;

[0040] 310, conductive film 1, 320, friction film 2, 330, conductive film 2, 340, friction film 1;

[0041] 400, ventilation assembly, 410, hose 1, 420, three-way connector, 430, hose 3, 440, hose 2;

[0042] 500, piston cylinder, 510, connecting nozzle;

[0043] 600, push rod, 610, sealing rubber ring;

[0044] 700, floating plate, 710, assembly hole 1;

[0045] 800, counterweight block, 810, assembly hole 2;

[0046] 900, housing, 910, supporting plate 1. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] It should be noted that when a component is referred to as being "mounted on" another component, it can be directly on the other component or there can be a component centered. When a component is considered to be "set on" another component, it can be directly set on the other component or there can be a component centered. When a component is considered to be "fixed to" another component, it can be directly fixed to the other component or there can be a component centered.

[0049] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "or / and" used herein includes any and all combinations of one or more of the related listed items.

[0050] Example 1

[0051] See also Figure 1-Figure 13 , this embodiment discloses a gas-assisted wave energy generator.

[0052] like Figure 1 , Figure 2 As shown, a gas-assisted wave energy generator includes: a floating plate 700, a piston assembly, an airbag assembly 100, a ventilation assembly 400, a power generation assembly 200, and a housing 900.

[0053] like Figure 3 As shown, the floating plate 700 is used to float on the sea surface. The floating plate 700 is made of a material with a density less than that of seawater, and floats by using the density difference. Of course, due to the uncertainty of the amplitude of the waves, seawater may hit the top surface of the floating plate 700. In order to facilitate rapid drainage, the top surface of the floating plate 700 can be designed as a slope with a high center and low surroundings.

[0054] The piston assembly is used to convert the wave energy into piston motion. Figure 4 , Figure 5 As shown, the piston assembly includes: a piston cylinder 500 and a push rod 600.

[0055] The piston cylinder 500 axially and vertically penetrates the floating plate 700. For easy assembly, an assembly hole 710 can be opened in the center of the floating plate 700, and the piston cylinder 500 passes through the assembly hole 710 and has an interference fit with the assembly hole 710. In this way, the piston cylinder 500 is connected to the floating plate 700 and moves together.

[0056] The push rod 600 is used to be fixed in a position vertical to the sea level and not to move. If the installation location of the device is close to the coast, the length of the push rod 600 can be lengthened and inserted into the seabed for fixation; if the installation location of the device is far away from the seabed, it can be fixed on a nearby fixed object. One end of the push rod 600 extends into the piston cylinder 500 from the bottom of the piston cylinder 500, and forms a dynamic seal with the inner wall of the piston cylinder 500 to form a piston cavity. In this way, the floating plate 700 moves up and down with the waves, and moves synchronously with the piston cylinder 500, further causing the push rod 600 and the piston cylinder 500 to move relative to each other, and the volume of the piston cavity also changes accordingly.

[0057] In order to ensure the dynamic sealing effect, the end of the push rod 600 extending into the piston cylinder 500 can be designed as a piston plate, and the piston plate and the inner wall of the piston cylinder 500 are used to form a dynamic seal; or a sealing rubber ring 610 can be set at the end of the push rod 600 extending into the piston cylinder 500, and the sealing rubber ring 610 is used to enhance the sealing with the inner wall of the piston cylinder 500.

[0058] It should be noted that in order to ensure the normal operation of the floating plate 700, the friction between the push rod 600 and the piston cylinder 500 needs to be overcome. The weight of the floating plate 700 can be increased, or a counterweight block 800 can be set on the floating plate 700 to balance the friction of the piston assembly. Figure 6 In order to facilitate assembly, a second assembly hole 810 can be opened in the center of the configuration block, and the piston cylinder 500 passes through the second assembly hole 810 and has an interference fit with the second assembly hole 810.

[0059] In addition, Figure 4 As shown, a connection nozzle 510 is provided on the top of the piston cylinder 500 to facilitate subsequent connection of the ventilation assembly 400.

[0060] See also Figure 8 In this embodiment 1, the airbag assembly 100 is located above the piston assembly, and includes a support plate 1 910, a support plate 2, and an airbag 1 110. The support plate 1 910 and the support plate 2 are arranged at intervals, and the interval is fixed; the airbag 1 110 is located between the support plate 1 910 and the support plate 2, and is connected to the support plate 1 910.

[0061] like Figure 8 As shown, the outer ring of the airbag 110 is provided with a circle of pressing edge to prevent gas leakage. The airbag 110 is provided with a venting nozzle 120 for ventilation.

[0062] The vent assembly 400 connects the piston cavity with the airbag 1 110, and is used to change the distance between the airbag 1 110 and the support plate 2 through the movement of the piston. In this embodiment 1, the vent assembly 400 can directly use a soft tube, one end of which is interference-fitted with the connecting nozzle 510 of the piston cylinder 500, and the other end is interference-fitted with the vent nozzle 120 of the airbag 1 110. In this way, when the volume of the piston cylinder 500 changes, the airbag 1 110 will be inflated or evacuated synchronously through the vent assembly 400 to change the volume of the airbag 1 110.

[0063] The power generation assembly 200 is disposed between the airbag 1 110 and the support plate 2, and is used to realize contact-separation power generation by changing the distance between the airbag 1 110 and the support plate 2.

[0064] In general, the power generation component 200 includes at least a plurality of flexible substrates 210. The plurality of flexible substrates 210 form a retractable array. A friction film 1 340 and a friction film 2 320 are disposed between two adjacent flexible substrates 210; the friction film 1 340 and the friction film 2 320 move together with the flexible substrates 210; and the friction film 1 340 and the friction film 2 320 have different abilities to lose electric charge.

[0065] In this way, when the distance between the airbag 110 and the supporting plate 2 changes, the two adjacent flexible substrates 210 gradually change from the state 1 to the state 2, or gradually change from the state 2 to the state 1.

[0066] State 1 is that two adjacent flexible substrates 210 are separated, and the friction film 1 340 and the friction film 2 320 between the two adjacent flexible substrates 210 are also separated. State 2 is that two adjacent flexible substrates 210 are in soft contact, and the friction film 1 340 and the friction film 2 320 between the two adjacent flexible substrates 210 are in large-area contact.

[0067] For details, see Fig. 9 In the present embodiment 1, the power generation component 200 can be designed to include: a plurality of flexible substrates 210 and a plurality of connectors 220 .

[0068] The flexible substrate 210 can be made of flexible materials such as TPU (thermoplastic polyurethane) and TPE (thermoplastic elastomer), and can be integrally formed through 3D printing. The flexible substrate 210 has certain compressibility and stretchability.

[0069] The edges of two adjacent flexible substrates 210 are connected by a connector 220, which is used to limit the moving direction of the flexible substrates 210 and avoid misalignment. For the convenience of explanation, the two adjacent flexible substrates 210 include: flexible substrate 1 and flexible substrate 2. The connector 220 is V-shaped; for the two ends of the non-bent end of the connector 220, one end is connected to the edge of the flexible substrate 1, and the other end is connected to the edge of the flexible substrate 2. Fig. 9 The connecting member 220 can be arranged in the middle of the edge or near the corner of the edge. The angle of the connecting member 220 varies from 30° to 150°. The smaller the angle, the greater the rigidity of the connecting member 220.

[0070] In this way, through the action of the connecting member 220, a plurality of flexible substrates 210 form a retractable array.

[0071] The power generation principle of the power generation assembly 200 is based on the friction film 1 340 and the friction film 2 320 that can generate contact or separation. There are two specific configuration methods:

[0072] 1. See Fig.10 A friction film 1 340 is arranged on the side of the flexible substrate 1 facing the flexible substrate 2; a double-layer film 2 is arranged on the side of the flexible substrate 2 facing the flexible substrate 1; wherein the double-layer film 2 includes a friction film 2 320 and a conductive film 2 330 which are stacked, and the conductive film 2 330 is attached to the flexible substrate 2; the friction film 1 340 and the conductive film 2 330 are electrically connected.

[0073] There is a difference between the ability of friction film 1 340 and friction film 2 320 to lose charge: the friction electric sequence of friction film 1 340 can be required to be better than the friction electric sequence of friction film 2 320, that is, friction film 1 340 is more likely to lose electrons than friction film 2 320, and the greater the difference, the better the power generation effect.

[0074] In this way, as the volume of the airbag 1 110 changes, the adjacent flexible substrates 210 move closer or farther away, so that the friction film 1 340 and the friction film 2 320 come into contact or separate. And because the flexible substrate 210, the friction film 1 340, the friction film 2 320, and the conductive film 2 330 can all be deformed, in the process of changing to the state 2, the two adjacent flexible substrates 210 will be affected by the airbag 1 110 to achieve soft contact, that is, adaptive deformation, so that the friction film 1 340 and the friction film 2 320 located between the two adjacent flexible substrates 210 will also be adaptively deformed and come into contact with a large area.

[0075] In this configuration, the friction film 1 340 not only reacts with the friction film 2 320 to generate opposite charges, but also reacts with the conductive film 2 330 to achieve charge transfer. Therefore, the friction film 1 340 is made of conductive materials with triboelectric effect, such as copper, aluminum, etc. The friction film 2 320 is made of polymer materials with triboelectric effect, such as nylon, Kapton (polyimide) film, PTFE (polytetrafluoroethylene) film, FEP (polyperfluoroethylene propylene), etc. The conductive film 2 330 is made of conductive materials, such as copper, aluminum, etc.

[0076] 2. See Fig.11A double-layer film is arranged on the side of the flexible substrate one facing the flexible substrate two; wherein the double-layer film includes a friction film one 340 and a conductive film one 310 which are stacked, and the conductive film one 310 is attached to the flexible substrate one; a double-layer film two is arranged on the side of the flexible substrate two facing the flexible substrate one; wherein the double-layer film two includes a friction film two 320 and a conductive film two 330 which are stacked, and the conductive film two 330 is attached to the flexible substrate two; the conductive film one 310 and the conductive film two 330 are electrically connected.

[0077] There is a difference between the ability of friction film 1 340 and friction film 2 320 to lose charge: the friction electric sequence of friction film 1 340 can be required to be better than the friction electric sequence of friction film 2 320, that is, friction film 1 340 is more likely to lose electrons than friction film 2 320, and the greater the difference, the better the power generation effect.

[0078] In this way, as the volume of the airbag 1 110 changes, the adjacent flexible substrates 210 move closer or farther away, so that the friction film 1 340 and the friction film 2 320 come into contact or separate. And because the flexible substrate 210, the friction film 1 340, the friction film 2 320, the conductive film 1 310, and the conductive film 2 330 can all be deformed, in the process of changing to the state 2, the two adjacent flexible substrates 210 will be affected by the airbag 1 110 to achieve soft contact, that is, adaptive deformation, so that the friction film 1 340 and the friction film 2 320 located between the two adjacent flexible substrates 210 will also be adaptively deformed and come into contact with a large area.

[0079] In this configuration, the friction film 1 340 and the friction film 2 320 react to generate opposite charges, and the conductive film 1 310 and the conductive film 2 330 realize charge transfer. Then, the friction film 1 340 and the friction film 2 320 are made of polymer materials with triboelectric effect, such as nylon, Kapton (polyimide) film, PTFE (polytetrafluoroethylene) film, FEP (polyperfluoroethylene propylene), etc. The conductive film 1 310 and the conductive film 2 330 are made of conductive materials, such as copper, aluminum, etc.

[0080] It should be noted that in the above two configurations, two adjacent flexible substrates 210 can be regarded as a power generation unit (TENG): if there are n flexible substrates 210, there are n-1 power generation units. If the first configuration is adopted, the two output ends of the power generation unit are the friction film 1 340 and the conductive film 2 330. If the second configuration is adopted, the two output ends of the power generation unit are the conductive film 1 310 and the conductive film 2 330.

[0081] The housing 900 is connected to the outer top of the piston cylinder 500 and is used to encapsulate the airbag assembly 100, the ventilation assembly 400, and the power generation assembly 200. Fig.12The housing 900 can be designed to be spliced, and two symmetrical half-shells can be assembled together and sealed. The support plate 1 910 and the support plate 2 need to be fixedly installed in the housing 900, and the other components do not need to be fixed when they are packaged.

[0082] In general, based on the above design, when the sea wave is at the crest stage, the floating plate 700 and the piston cylinder 500 are lifted upward, thereby driving the piston cylinder 500 and the push rod 600 to move relative to each other, the volume of the piston chamber increases, the air pressure decreases, the airbag 1 110 is inhaled, the expansion amount decreases, and the distance between the airbag 1 110 and the support plate 2 is the largest; when the sea wave crest stage is over, the sea level drops, and the weight of the floating plate 700 and the components above the floating plate 700 is used to overcome the The friction between the push rod 600 and the inner wall of the piston cylinder 500 makes the floating plate 700 close to the sea level, so the volume of the piston cavity becomes smaller, part of the gas flows from the piston cavity into the airbag 1 110, the expansion amount of the airbag 1 110 becomes larger, and the distance between the airbag 1 110 and the supporting plate 2 decreases; when in the trough stage of the sea wave, the floating plate 700 continues to descend, the volume of the piston cavity further decreases, the expansion amount of the airbag 1 110 continues to increase, and the distance between the airbag 1 110 and the supporting plate 2 is the smallest;

[0083] When the distance between the airbag 1 110 and the support plate 2 changes, the flexible substrates 210 arranged in a queue also move closer to or farther from each other, so that the friction film 1 340 and the friction film 2 320 on the opposite sides come into contact or separate, and charge transfer power generation is realized.

[0084] Example 2

[0085] See also Figure 1-Figure 13 This embodiment discloses another gas-assisted wave energy generator, which is similar in general structure to that of the embodiment 1, except that:

[0086] The airbag assembly 100 is further provided with an airbag 2. The structure of the airbag 2 is the same as that of the airbag 1 110. The airbag 2 is also located between the support plate 1 910 and the support plate 2, and is connected to the support plate 2.

[0087] Thus, the flexible substrate 210 at the first position in the queue is connected to the airbag 1 110, and the flexible substrate 210 at the last position in the queue is connected to the airbag 2. Thus, the power generation assembly 200 is actually located between the two airbags, and the ventilation assembly 400 actually changes the distance between the two airbags through piston movement.

[0088] The airbag 2 can be designed to have a constant inflation volume, or it can be designed to have a variable inflation volume similar to the airbag 1 110. If the latter is adopted, the vent assembly 400 can be used to connect the piston chamber to the airbag 2. Fig.13, the ventilation assembly 400 can be designed to include: hose 1 410, hose 2 440, hose 3 430, and three-way connector 420. Hose 1 410, hose 2 440, and hose 3 430 are respectively connected to the three ends of the three-way connector 420; hose 1 410 is connected to airbag 1 110, hose 2 440 is connected to airbag 2, and hose 2 440 is connected to the piston chamber. Specifically, one end of hose 1 410 is interference fit with the first end of the three-way connector 420, and the other end is interference fit with the ventilation nozzle 120 of airbag 1 110; one end of hose 2 440 is interference fit with the second end of the three-way connector 420, and the other end is interference fit with the ventilation nozzle 120 of airbag 2. One end of hose 3 430 is interference fit with the third end of the three-way connector 420, and the other end is interference fit with the connecting nozzle 510 of the piston cylinder 500. In this way, the volume change of the piston chamber can achieve a synchronous change in the expansion amount of the two airbags. Experiments show that the power generation performance of this method is further improved than that of Example 1.

[0089] Example 3

[0090] See also Fig.14 , this embodiment 3 discloses an electric energy storage system, including: a gas-assisted wave energy generator as disclosed in embodiment 1 or embodiment 2, and a peripheral circuit.

[0091] The peripheral circuit is electrically connected to the gas-assisted wave energy generator and is used for storing and releasing the electric energy generated by the gas-assisted wave energy generator.

[0092] If the gas-assisted wave energy generator has n-1 power generation units (TENG), one of the power generation units is used as the switch trigger unit (Unit2), and the remaining n-2 power generation units are used as the energy capture unit (Unit1). Fig.14 As shown, there are 7 power generation units: one power generation unit is used as a switch triggering unit, and the remaining 6 power generation units are used as energy capture units.

[0093] In this embodiment 3, the peripheral circuit can be used Fig.14 Design:

[0094] The peripheral circuit includes: rectifier bridge 1, capacitor C s 、Load R L , rectifier bridge 2, resistor R, MOS tube MOSFET. The input end of rectifier bridge 1 is connected to the output end of the energy capture unit, and the output end is connected to the capacitor C s The input end of the rectifier bridge 2 is connected to the output end of the switch trigger part, and the output end is connected to the resistor. The resistor R is connected in parallel with the MOS tube; the MOS tube and the capacitor C s 、Load R L Series connection.

[0095] Rectifier bridge - used to convert the AC power generated by the energy capture unit into pulsed DC power and pass it to capacitor C s The second rectifier bridge is used to convert the alternating current generated by the switch trigger part into pulse direct current and form a working voltage to control the MOS tube MOSFET at the resistor R.

[0096] Specifically, the energy capture unit stores the generated electrical energy in the capacitor C through a rectifier bridge. s Inside, the switch trigger part forms the working voltage of the MOS tube MOSFET through the rectifier bridge II and the resistor R. When the working voltage reaches the MOS tube MOSFET conduction voltage, the MOS tube MOSFET is turned on, and the MOS tube and capacitor C s 、Load R L Forming a loop, capacitor C s The stored electrical energy is released quickly and uniformly.

[0097] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0098] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A gas-assisted wave energy generator, characterized in that: include: Floating boards, which are used to float on the sea surface; A piston assembly for converting wave energy into piston motion; The piston assembly comprises: a piston cylinder and a push rod; the piston cylinder axially and vertically penetrates the floating plate; the piston cylinder is connected to the floating plate and moves together; the push rod is used to be fixed in a vertical position to the sea level and does not move; one end of the push rod extends into the piston cylinder from the bottom of the piston cylinder, and forms a dynamic seal with the inner wall of the piston cylinder to form a piston cavity; The airbag assembly is located above the piston assembly and includes a support plate 1, a support plate 2, and an airbag 1; the support plate 1 and the support plate 2 are arranged at intervals, and the intervals are fixed; the airbag 1 is located between the support plate 1 and the support plate 2, and is connected to the support plate 1; A vent assembly connects the piston cavity with the airbag 1 and is used to change the distance between the airbag 1 and the support plate 2 through the movement of the piston; A power generation component is arranged between the airbag 1 and the support plate 2, and is used to realize contact-separation power generation by changing the distance between the airbag 1 and the support plate 2; the power generation component includes a plurality of flexible substrates; the plurality of flexible substrates form a retractable array; a friction film 1 and a friction film 2 are arranged between two adjacent flexible substrates; the friction film 1 and the friction film 2 move together with the flexible substrate; the friction film 1 and the friction film 2 have different abilities to lose charge; When the distance between the airbag 1 and the support plate 2 changes, the two adjacent flexible substrates gradually change from state 1 to state 2, or from state 2 to state 1; state 1 is that the two adjacent flexible substrates are separated, and the friction film 1 and the friction film 2 between the two adjacent flexible substrates are also separated; state 2 is that the two adjacent flexible substrates are in soft contact, and the friction film 1 and the friction film 2 between the two adjacent flexible substrates are in large-area contact; as well as The outer shell is connected to the outer top of the piston cylinder and is used to encapsulate the airbag component, the ventilation component, and the power generation component.

2. The gas-assisted wave energy generator according to claim 1, characterized in that: The two adjacent flexible substrates include: a first flexible substrate and a second flexible substrate; A friction film 1 is arranged on one side of the flexible substrate 1 facing the flexible substrate 2; a double-layer film 2 is arranged on one side of the flexible substrate 2 facing the flexible substrate 1; wherein the double-layer film 2 includes a friction film 2 and a conductive film 2 which are stacked, and the conductive film 2 is attached to the flexible substrate 2; the friction film 1 and the conductive film 2 are electrically connected; Or, a double-layer film is arranged on the side of flexible substrate one facing flexible substrate two; wherein the double-layer film includes a friction film one and a conductive film one which are stacked, and the conductive film one is attached to flexible substrate one; a double-layer film two is arranged on the side of flexible substrate two facing flexible substrate one; wherein the double-layer film two includes a friction film two and a conductive film two which are stacked, and the conductive film two is attached to flexible substrate two; the conductive film one and the conductive film two are electrically connected.

3. The gas-assisted wave energy generator according to claim 2, characterized in that: The flexible substrate at the first position in the queue is connected to the airbag one, and the flexible substrate at the last position in the queue is connected to the supporting plate two.

4. The gas-assisted wave energy generator according to claim 2, characterized in that: The airbag assembly further includes: airbag 2; The airbag 2 is also located between the support plate 1 and the support plate 2, and is connected to the support plate 2; The flexible substrate at the first position in the queue is connected to the first airbag, and the flexible substrate at the last position in the queue is connected to the second airbag.

5. The gas-assisted wave energy generator according to claim 4, characterized in that: The ventilation assembly also connects the piston chamber to the second airbag; The ventilation assembly comprises: a hose 1, a hose 2, a hose 3, and a three-way connector; Hose one, hose two and hose three are respectively connected to three ends of the three-way joint; hose one is connected to airbag one, hose two is connected to airbag two, and hose two is connected to the piston chamber.

6. The gas-assisted wave energy generator according to claim 2, characterized in that: The edges of two adjacent flexible substrates are connected by a connector to limit the moving direction of the flexible substrates and avoid misalignment; The connecting piece is V-shaped; for the two ends of the non-bent end of the connecting piece, one end is connected to the edge of the first flexible substrate, and the other end is connected to the edge of the second flexible substrate.

7. The gas-assisted wave energy generator according to claim 2, characterized in that: The first friction film and the second friction film are materials having a triboelectric effect.

8. The gas-assisted wave energy generator according to claim 1, characterized in that: The floating plate is also provided with a counterweight block for balancing the friction force of the piston assembly during operation.

9. The gas-assisted wave energy generator according to claim 1, characterized in that: The top surface of the floating plate is a slope with a high center and low surrounding areas.

10. An electric energy storage system, characterized in that: It includes: A gas-assisted wave energy generator as claimed in any one of claims 1 to 9; as well as The peripheral circuit is electrically connected to the gas-assisted wave energy generator and is used for storing and releasing the electric energy generated by the gas-assisted wave energy generator.

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