Charge pumping nanometer generator
By designing a charge-pumped nanogenerator, the DC charge is injected with a voltage double circuit and the charge flow to the parasitic capacitor is prevented by the charge flow control component, the problem of charge being extruded in the domain-limited electrode is solved, and the high stability and high output power collection effect is achieved.
Patent Information
- Application Number
- CN202510466525.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-14
- Publication Date
- 2025-06-27
AI Technical Summary
Traditional friction nanopower generation techniques have problems with low power density, especially in wave energy collection, and the charge in the limit electrode in the pump nanogenerator is extruded due to parasitic capacitance, resulting in low and unstable output.
A charge-pumped nanogenerator is designed, including a pumped power generation unit, a voltage double circuit and a charge flow control assembly. By setting symmetrical limiting electrodes and output electrodes and injecting DC charges with voltage double circuits, the charge flow control component prevents charge flow to the parasitic capacitance, thereby improving charge density and output stability.
It effectively solves the problem of charge being extruded in the limited domain electrode, improves the stable and high output capability of the generator, and enhances the stability and efficiency of the electrical energy output.
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Figure CN120222840A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of triboelectric nanogenerators, and particularly to a charge-pumping nanogenerator. Background Art
[0002] Triboelectric nanogenerator technology can be used to collect mechanical energy of low-frequency motion. Especially for the collection of blue energy, it has advantages such as simple structure, low cost, and rich material selection. However, traditional triboelectric nanogenerator technology also has the problem of low power density, which greatly limits its practical applications, especially wave energy collection.
[0003] To solve the problem of low power density, currently, a pumping nanogenerator has been proposed. A pumping nanogenerator is a high-performance nanogenerating device that works by injecting confined charges into a confined electrode, and the confined charge density determines the output charge density and power of the device. However, in practical applications, there is a parasitic capacitance in the confined electrode and the connected circuit. The charges injected into the confined electrode are squeezed into the parasitic capacitance due to the electrostatic force and reaction force of the charges in the lower output electrode. The charge density in the confined electrode decays, resulting in a decrease in the induced charge density in the output electrode, thus leading to low and unstable output. Summary of the Invention
[0004] This application provides a charge-pumping nanogenerator, which can solve the problem of charge extrusion in the confined electrode to ensure stable and high output of the generator.
[0005] This application provides a charge-pumping nanogenerator, including at least one pumping power generation unit, a voltage multiplier circuit, and a charge flow control component; The pumping power generation unit includes a rotor and a stator. Among them, the rotor includes a first substrate and a first output electrode and a second output electrode disposed on one side of the first substrate facing the stator. The stator includes a second substrate and a first confined electrode and a second confined electrode disposed on one side of the second substrate facing the rotor. The polarities of the first confined electrode and the second confined electrode are opposite, and the charges in the first confined electrode and the charges in the second confined electrode are symmetrically confined; The rotor can rotate relative to the stator to make the first output electrode and the second output electrode generate alternating current; The input ends of the voltage multiplier circuit are respectively connected to the first output electrode and the second output electrode, and the output ends of the voltage multiplier circuit are respectively connected to the first confined electrode and the second confined electrode. The voltage multiplier circuit is used to convert the alternating current output by the first output electrode and the second output electrode into direct current; The charge flow control component includes a first charge flow control element and a second charge flow control element. The first charge flow control element is disposed between the output terminal of the voltage multiplier circuit and the first confinement electrode, adjacent to the first confinement electrode. The second charge flow control element is disposed between the output terminal of the voltage multiplier circuit and the second confinement electrode, adjacent to the second confinement electrode. The charge flow control component prevents the charge in the confinement electrode from flowing into the parasitic capacitance, so as to block the direct connection between the confinement electrode and the parasitic capacitance.
[0006] The charge pump nanogenerator provided by the present application is provided with a stator and a rotor. The stator includes a first confinement electrode and a second confinement electrode. The charges in the first confinement electrode and the second confinement electrode are symmetrically confined. The rotor includes a first output electrode and a second output electrode. When the rotor rotates relative to the stator, an alternating current can be generated between the first output electrode and the second output electrode. The voltage multiplier circuit converts the alternating current into a direct current and outputs the direct current to the first confinement electrode and the second confinement electrode to inject charges into the first confinement electrode and the second confinement electrode, so as to increase the charge density and improve the electric energy output of the generator. By respectively arranging the first charge flow control element and the second charge flow control element at positions adjacent to the first confinement electrode and the second confinement electrode, the charges in the first confinement electrode and the second confinement electrode can be prevented from flowing out, and the charge in the confinement electrode from being extruded and flowing into the parasitic capacitance, thereby further improving the ability of the generator to output electric energy.
[0007] In some possible implementation manners, the first charge flow control element includes a diode.
[0008] In some possible implementation manners, the second charge flow control element includes a diode.
[0009] In some possible implementation manners, a plurality of first confinement electrodes are provided on the second substrate, and the plurality of first confinement electrodes are circumferentially spaced apart around the second substrate; A plurality of second confinement electrodes are provided on the second substrate, and the plurality of second confinement electrodes are circumferentially spaced apart around the second substrate; The first confinement electrodes and the second confinement electrodes are arranged in an interleaved manner, and the first confinement electrodes are connected in parallel with each other, and the second confinement electrodes are connected in parallel with each other.
[0010] In some possible implementation manners, a first voltage stabilizing diode and a second voltage stabilizing diode are further included; The first confinement electrode is the positive electrode, the second confinement electrode is the negative electrode, the voltage doubling circuit includes a first input terminal, a second input terminal, a first output terminal and a second output terminal. The first input terminal and the second input terminal are respectively connected to the first output electrode and the second output electrode, and the first output terminal and the second output terminal are respectively connected to the first confinement electrode and the second confinement electrode; The cathode of the first voltage stabilizing diode is connected to the first input terminal of the voltage doubling circuit, and the anode of the first voltage stabilizing diode is connected to the second output terminal of the voltage doubling circuit; The cathode of the second voltage stabilizing diode is connected to the first output terminal of the voltage doubling circuit, and the anode of the second voltage stabilizing diode is connected to the second input terminal of the voltage doubling circuit.
[0011] In some possible implementation schemes, a sealed container is further included. The inside of the sealed container has a sealed cavity, and the sealed cavity is filled with a liquid dielectric; The first substrate and the second substrate are both arranged in the sealed cavity and immersed in the liquid dielectric.
[0012] In some possible implementation schemes, the sealed container includes a sealed silica gel sleeve and an upper sealing cover and a lower sealing cover which are oppositely arranged; The two ends of the sealed silica gel sleeve along the axial direction are respectively provided with a first opening and a second opening; The upper sealing cover is located inside the sealed silica gel sleeve. The upper sealing cover abuts against the inner wall of the sealed silica gel sleeve along the circumferential direction of the sealed silica gel sleeve, and the upper sealing cover covers the first opening; The lower sealing cover is located inside the sealed silica gel sleeve. The lower sealing cover abuts against the inner wall of the sealed silica gel sleeve along the circumferential direction of the sealed silica gel sleeve, and the lower sealing cover covers the second opening.
[0013] In some possible implementation schemes, a rotor shaft is further included. The rotor shaft penetrates through the first substrate and is fixedly connected to the first substrate; The second substrate is fixedly connected to the side of the upper sealing cover facing the lower sealing cover; A first limiting round hole is provided in the center of the upper sealing cover. A first sealing plug is arranged in the first limiting round hole. A second limiting round hole is provided in the center of the lower sealing cover. A second sealing plug is arranged in the second limiting round hole. The rotor shaft penetrates through the first sealing plug and the second sealing plug.
[0014] In some possible implementation schemes, there are multiple first output electrodes on the second substrate, and the multiple first output electrodes are distributed at intervals along the circumferential direction of the second substrate; The second output electrodes on the second substrate are multiple, and the multiple second output electrodes are distributed at intervals along the circumferential direction of the second substrate; The first output electrodes and the second output electrodes are arranged in an interleaved manner, and the first output electrodes are connected in parallel with each other, and the second output electrodes are connected in parallel with each other.
[0015] In some possible implementation manners, a slip ring is further included, and the slip ring includes a slip brush and a conductive ring. The slip brush is connected to the stator, and the conductive ring is connected to the rotor. Description of the Drawings
[0016] Figure 1 It is a state change diagram when a traditional pump nanogenerator works; Figure 2 It is an exploded structural schematic diagram of a charge pump nanogenerator in an embodiment of the present application; Figure 3 It is a circuit schematic diagram of a charge pump nanogenerator in an embodiment of the present application; Figure 4 It is a state change diagram of a charge pump nanogenerator in an embodiment of the present application; Figure 5 It is a structural schematic diagram of a voltage multiplier circuit in an embodiment of the present application; Figure 6 It is a structural schematic diagram of a sealed container in an embodiment of the present application; Figure 7 It is a structural schematic diagram of a rotor in an embodiment of the present application; Figure 8 It is a structural schematic diagram of a stator in an embodiment of the present application; Figure 9 It is a structural schematic diagram of an upper sealing cover in an embodiment of the present application; Figure 10 It is a structural schematic diagram of a slip ring in an embodiment of the present application; Figure 11 It is a structural schematic diagram of a slip brush in an embodiment of the present application.
[0017] In the figure: 01 - Confined electrode; 02 - Output electrode; 03 - Parasitic capacitance; 04 - Load; 10 - Load; 100 - Rotor; 110 - First substrate; 120 - First output electrode; 130 - Second output electrode; 200 - Stator; 210 - Second substrate; 220 - Confined electrode; 221 - First confined electrode; 222 - Second confined electrode; 300 - Voltage multiplier circuit; 310 - Rectifier diode; 320 - High - voltage capacitor; 400 - Charge flow control component; 410 - First charge flow control element; 420 - Second charge flow control element; 500 - Parasitic capacitance; 610 - First zener diode; 620 - Second zener diode; 700 - Sealed container; 710 - Sealed silicone sleeve; 711 - First opening; 720 - Upper sealing cover; 721 - First limiting round hole; 722 - First sealing plug; 7221 - First mounting hole; 730 - Lower sealing cover; 740 - Liquid dielectric; 801 - Rotor shaft; 802 - Upper end cover; 803 - Lower end cover; 804 - First inertial wheel; 805 - Second inertial wheel; 806 - First one - way bearing; 807 - Second one - way bearing; 808 - First gasket; 809 - Third gasket; 900 - Slip ring; 910 - Slip brush; 911 - First metal brush; 912 - Second metal brush; 913 - Slip brush cover; 920 - Conductive ring; 921 - First conductive ring; 922 - Second conductive ring; 923 - First conductive ring substrate; 924 - Second conductive ring substrate; 930 - Fourth gasket. Detailed implementation mode
[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.
[0019] The pumping nanogenerator is a high - performance nanogenerator device that can work relying on the confined charges injected into the confined electrode, and the confined charge density determines the output charge density and power of the device. Refer to Figure 1, during the operation of the device, the upper confinement electrode 01 and the lower output electrode 02 can rotate relative to each other, enabling the output electrode 02 to output alternating current to the load 04. During this process, the upper confinement electrode 01 will periodically face the output electrode 02 carrying opposite or the same charges. The charges in the confinement electrode 01 will exert a Coulomb force on the free charges in the output electrode 02. While the output electrode 02 generates alternating current, it will also generate a reaction force on the charges in the confinement electrode 01. When electrodes with the same charge sign meet, this repulsive force will squeeze the confined charges out of the electrode into the parasitic capacitance 03, resulting in a temporary attenuation of the charge density in the output electrode 02, and its ability to drive the output electrode to release charges will also decrease, thereby causing the output of the output electrode 02 to be low and unstable.
[0020] Based on this, the embodiments of the present application can provide a charge-pumping nanogenerator to solve the problem that the confined charges in the confinement electrode are squeezed into the parasitic capacitance. The above charge-pumping nanogenerator will be described in detail below in conjunction with specific embodiments.
[0021] Refer to Figure 2 and Figure 3 , the charge-pumping nanogenerator in the embodiments of the present application may include at least one pumping power generation unit, and the pumping power generation unit may include a rotor 100 and a stator 200. Among them, the rotor 100 may include a first substrate 110, and a first output electrode 120 and a second output electrode 130 disposed on the side of the first substrate 110 facing the stator 200. The stator 200 may include a second substrate 210, and a confinement electrode 220 disposed on the side of the second substrate 210 facing the rotor 100.
[0022] The charge-pumping nanogenerator in this embodiment may further include a voltage multiplier circuit 300 and a charge flow control component 400. The first output electrode 120 and the second output electrode 130 are respectively connected to the input terminals of the voltage multiplier circuit 300, and the output terminal of the voltage multiplier circuit 300 is connected to the confinement electrode 220. In addition, the output terminals of the first output electrode 120 and the second output electrode 130 may also be connected to the load 10, and the load 10 may be connected between the first output electrode 120 and the voltage multiplier circuit 300, so that the generator in this embodiment can output electrical energy through the load 10.
[0023] In this embodiment, the rotor 100 can rotate relative to the stator 200. When relative rotation occurs between the rotor 100 and the stator 200, under the action of electrostatic induction, the first output electrode 120, the second output electrode 130, and the confinement electrode 220 can cooperate to generate electrical energy, and the electrical energy here is alternating current. The first output electrode 120 and the second output electrode 130 output the generated alternating current to the voltage multiplier circuit 300. After receiving the alternating current, the voltage multiplier circuit 300 can convert the alternating current into direct current, and then output the direct current to the confinement electrode 220.
[0024] It can be understood that the higher the charge density of the confinement electrode 220, the higher the output electrical energy of the first output electrode 120 and the second output electrode 130. After the first output electrode 120 and the second output electrode 130 output alternating current, the voltage multiplier circuit 300 injects charges into the confinement electrode 220 using direct current, so that the charge density in the confinement electrode 220 is enhanced. As the charge density in the confinement electrode 220 increases, the first output electrode 120 and the second output electrode 130 can induce more charges, enhancing the AC output, thus facilitating the improvement of the electrical energy output ability of the pumped nanogenerator.
[0025] Continue to refer to Figure 3 , the charge flow control component 400 is connected between the output terminal of the voltage multiplier circuit 300 and the confinement electrode 220, and the charge flow control component 400 is arranged at a position close to the confinement electrode 220. In practical applications, due to reasons such as long transmission lines and high dielectric constant environments, there will be a large parasitic capacitance 500 in the circuit connected between the voltage multiplier circuit 300 and the confinement electrode 220. When the charge flow control component 400 is arranged at a position close to the confinement electrode 220, the charge flow control component 400 can be used to limit the flow of charges in the electrode to the parasitic capacitance 500 in the circuit, thereby blocking the direct connection between the confinement electrode 220 and the parasitic capacitance 500. That is to say, in this embodiment, by setting the charge flow control component 400, the confinement electrode 220 can only be injected with charges by the voltage multiplier circuit 300, and the path for the charges in the confinement electrode 220 to be extruded is blocked by the charge flow control component 400, thereby ensuring that the pumped nanogenerator can stably output electrical energy.
[0026] Refer to again Figure 3, the confinement electrode 220 may include a first confinement electrode 221 and a second confinement electrode 222, where the polarities of the first confinement electrode 221 and the second confinement electrode 222 are opposite. That is, one of the first confinement electrode 221 and the second confinement electrode 222 is the positive electrode, and the other is the negative electrode. For the convenience of the description of the following embodiments, it is preset here that the first confinement electrode 221 is the positive electrode and the second confinement electrode 222 is the negative electrode, and the charges in the first confinement electrode 221 and the charges in the second confinement electrode 222 are symmetrically confined. The voltage multiplier circuit 300 includes a first input terminal, a second input terminal, a first output terminal, and a second output terminal. Then, the first confinement electrode 221 is connected to the first output terminal, the second confinement electrode 222 is connected to the second output terminal, the first output electrode 120 is connected to the first input terminal, and the second output electrode 130 is connected to the second input terminal.
[0027] Correspondingly, the charge flow control component 400 may include a first charge flow control element 410 and a second charge flow control element 420. The first charge flow control element 410 is connected between the first output terminal of the voltage multiplier circuit 300 and the first confinement electrode 221, and the second charge flow control element 420 is connected between the second output terminal of the voltage multiplier circuit 300 and the second confinement electrode 222.
[0028] In this embodiment, the symmetric first confinement electrode 221 and the second confinement electrode 222 are provided. The symmetric pumping structure can synchronously accumulate positive and negative confinement charges in the two symmetric confinement electrodes 220, so as to further increase the charge density and improve the power output ability of the generator. On this basis, by setting the first charge flow control element 410 and the second charge flow control element 420, the outflow of charges in the first confinement electrode 221 and the second confinement electrode 222 can be respectively restricted, and the extrusion of charges in the confinement electrode 220 can be avoided, thereby further enhancing the stable output of the generator.
[0029] As an alternative implementation, the first charge flow control element 410 may include a diode, and / or the second charge flow control element 420 may include a diode. Since the first confinement electrode 221 is the positive electrode and the second confinement electrode 222 is the negative electrode, in specific implementation, the anode of the diode of the first charge flow control element 410 is connected to the first output terminal of the voltage multiplier circuit 300, and the cathode is connected to the first confinement electrode 221. The anode of the second charge flow control element 420 is connected to the second confinement electrode 222, and the cathode is connected to the second output terminal of the voltage multiplier circuit 300.
[0030] Continue to refer to Figure 3, the charge pump nanogenerator in this embodiment may further include a first zener diode 610 and a second zener diode 620. Among them, the cathode of the first zener diode 610 is connected to the first input terminal of the voltage multiplier circuit 300, and the anode is connected to the second output terminal of the voltage multiplier circuit 300. The cathode of the second zener diode 620 is connected to the first output terminal of the voltage multiplier circuit 300, and the anode is connected to the second input terminal of the voltage multiplier circuit 300.
[0031] As Figure 4 shown, the weak charge difference between the first confinement electrode 221 and the second confinement electrode 222 can generate an alternating current between the first output electrode 120 and the second output electrode 130 due to electrostatic induction during the rotation relative to the first output electrode 120 and the second output electrode 130. After the voltage multiplier circuit 300 absorbs the alternating current and then converts it into a direct current, the direct current is output to the first confinement electrode 221 and the second confinement electrode 222 to inject charges of different polarities into the first confinement electrode 221 and the second confinement electrode 222 respectively, so that the charge density of the first confinement electrode 221 and the second confinement electrode 222 is enhanced. With further rotation, more charges can be induced between the first output electrode 120 and the second output electrode 130, resulting in an enhanced AC output, and the charge density and voltage in the system will become higher and higher. In order to avoid dielectric breakdown due to too high charge density and voltage in the system, in this embodiment, through the first zener diode 610 and the second zener diode 620, the growth of the voltage in the system can be controlled, so as to ensure that the system can work normally.
[0032] In addition, since the load is connected between the first output electrode 120 and the voltage multiplier circuit 300 to achieve energy output, when the capacitor in the voltage multiplier circuit 300 is saturated and no longer absorbs the alternating current, the energy output will stop. In this embodiment, by setting the first zener diode 610 and the second zener diode 620, a stable charge leakage path can be provided to ensure that the voltage multiplier circuit 300 can continuously absorb the alternating current, so as to ensure a continuous and stable output in the load.
[0033] In some embodiments, referring to Figure 5 , the voltage multiplier circuit 300 may be, for example, a VMC circuit, which may be formed by connecting a rectifying diode 310 and a high-voltage capacitor 320. In actual application, the VMC circuit can absorb the AC input and achieve a DC output with an increased output voltage.
[0034] Referring again to Figure 2 and Figure 3, the charge pump nanogenerator in this embodiment may further include a sealed container 700. The interior of the sealed container 700 has a sealed cavity, and the sealed cavity is filled with a liquid dielectric 740. The first substrate 110 and the second substrate 210 can both be disposed in the sealed cavity, and the first substrate 110 and the second substrate 210 are immersed in the liquid dielectric 740. Since the first substrate 110 and the second substrate 210 are spaced apart, there are gaps between the first confinement electrode 221, the second confinement electrode 222 and the first output electrode 120, the second output electrode 130. When the first substrate 110 and the second substrate 210 are immersed in the liquid dielectric 740, it means that the first confinement electrode 221, the second confinement electrode 222 and the first output electrode 120, the second output electrode 130 are filled with the liquid dielectric 740. In this way, the liquid dielectric 740 can be used to replace the traditional air medium, which can effectively reduce the breakdown phenomenon between the electrodes, thereby significantly improving the ultimate charge density.
[0035] It is worth mentioning that in practical applications, in addition to filling the liquid dielectric 740 in the sealed cavity, a gas with a higher breakdown strength, such as sulfur hexafluoride, can also be filled, so that the breakdown phenomenon between the electrodes can also be reduced.
[0036] Reference Figure 6 , the sealed container 700 may include a sealed silica gel sleeve 710, an upper sealing cover 720 and a lower sealing cover 730, and the upper sealing cover 720 and the lower sealing cover 730 are disposed opposite to each other. The sealed silica gel sleeve 710 can be a cylindrical structure, and a first opening 711 and a second opening (not shown in the figure) can be respectively disposed at both ends of the sealed silica gel sleeve 710 along the axial direction. The sizes of the first opening 711 and the second opening are both smaller than the diameter of the sealed silica gel sleeve 710. The upper sealing cover 720 can be inserted into the interior of the sealed silica gel sleeve 710 through the first opening 711, and the upper sealing cover 720 can be in contact with the inner wall of the sealed silica gel sleeve 710 along the circumferential direction of the sealed silica gel sleeve 710, so that the upper sealing cover 720 and the sealed silica gel sleeve 710 are relatively fixed to each other. The lower sealing cover 730 can be inserted into the interior of the sealed silica gel sleeve 710 through the second opening, and the lower sealing cover 730 can be in contact with the inner wall of the sealed silica gel sleeve 710 along the circumferential direction of the sealed silica gel sleeve 710, so that the lower sealing cover 730 and the sealed silica gel sleeve 710 are relatively fixed to each other.
[0037] When both the upper sealing cover 720 and the lower sealing cover 730 are fixed to the sealed silica gel sleeve 710, the upper sealing cover 720 can cover the first opening 711, and the lower sealing cover 730 can cover the second opening. In this way, the sealed silica gel sleeve 710, the upper sealing cover 720 and the lower sealing cover 730 cooperate to form a sealed cavity.
[0038] In some embodiments, reference Figure 7, the first substrate 110 may be a disc structure, and the first output electrode 120 and the second output electrode 130 are respectively multiple. The multiple first output electrodes 120 are arranged at intervals along the circumferential direction of the first substrate 110 on the surface of the first substrate 110, the multiple second output electrodes 130 are arranged at intervals along the circumferential direction of the first substrate 110 on the surface of the first substrate 110, and the first output electrode 120 and the second output electrode 130 are arranged alternately. The multiple first output electrodes 120 are connected in parallel with each other, and the multiple second output electrodes 130 are connected in parallel with each other.
[0039] Reference Figure 8 , the second substrate 210 may also be a disc structure, and the first confinement electrode 221 and the second confinement electrode 222 are respectively multiple. The multiple first confinement electrodes 221 are arranged at intervals along the circumferential direction of the second substrate 210 on the surface of the second substrate 210, the multiple second confinement electrodes 222 are arranged at intervals along the circumferential direction of the second substrate 210 on the surface of the second substrate 210, and the first confinement electrode 221 and the second confinement electrode 222 are arranged alternately. The multiple first confinement electrodes 221 are connected in parallel with each other, and the multiple second confinement electrodes 222 are connected in parallel with each other.
[0040] The above-mentioned first confinement electrode 221, second confinement electrode 222, first output electrode 120 and second output electrode 130 can all be thin film structures. Specifically, the material of each electrode can be a conductive material such as metal, carbon or ITO, and the thickness of each electrode can be between 50 nm and 50 μm. The first substrate 110 and the second substrate 210 can both be composed of various structural materials, for example, insulating materials such as polymers, inorganic oxides, and composite materials. In addition, the surface of each electrode can also be covered with a dielectric layer film, for example, an insulating material such as a polymer, an inorganic oxide, or a composite material, and the thickness of the dielectric layer film can be 0.5 μm to 50 μm.
[0041] When the first substrate 110 and the second substrate 210 are located in the sealed cavity, as an optional implementation, the upper sealing cover 720 can be provided with a plurality of first threaded holes, and the second substrate 210 can also be provided with second threaded holes corresponding to the plurality of first threaded holes one by one. At this time, the second substrate 210 can be fixed by a screw rod fixed to the first threaded hole and the second threaded hole, so that the second substrate 210 can be fixed in the sealed cavity.
[0042] As Figure 2 shown, the charge pump nanogenerator in this embodiment may further include a rotor shaft 801. The rotor shaft 801 can pass through the first substrate 110, and the rotor shaft 801 is relatively fixed to the first substrate 110. A through hole can be provided in the middle of the second substrate 210 to facilitate the rotor shaft 801 to pass through the second substrate 210 through the through hole. At this time, the rotor shaft 801 can rotate relative to the second substrate 210 around its own axis.
[0043] On this basis, referring to Figure 9 , a first limiting round hole 721 may also be provided at the center of the upper sealing cover 720. A first sealing plug 722 is arranged in the first limiting round hole 721, and the first sealing plug 722 and the first limiting round hole 721 are relatively fixed. A first mounting hole 7221 is also provided at the center of the first sealing plug 722, so that the rotor shaft 801 can pass through the first mounting hole 7221, so as to realize the installation between the rotor shaft 801 and the first sealing plug 722. And the rotor shaft 801 can rotate around its own axis relative to the mounting hole.
[0044] Similarly, a second limiting round hole may also be provided at the center of the lower sealing cover 730. The second sealing plug and the second limiting round hole are relatively fixed. A second mounting hole is also provided at the center of the second sealing plug, so that the rotor shaft 801 can pass through the second mounting hole, so as to realize the installation between the rotor shaft 801 and the second sealing plug. And the rotor shaft 801 can rotate around its own axis relative to the mounting hole.
[0045] Furthermore, as Figure 2 shown, the charge pump nanogenerator in this embodiment may further include an upper end cover 802, a lower end cover 803, a first inertial wheel 804, a second inertial wheel 805, a first one-way bearing 806 and a second one-way bearing 807. The upper end cover 802 and the lower end cover 803 may be respectively located on both sides of the sealed container 700. The first inertial wheel 804 may be located on the side of the upper end cover 802 away from the sealed container 700, and the second inertial wheel 805 may be located on the side of the lower end cover 803 away from the sealed container 700. The first inertial wheel 804 and the second inertial wheel 805 are respectively fixed on the rotor shaft 801. The first inertial wheel 804 and the second inertial wheel 805 can absorb external mechanical energy (such as tidal energy), and then convert the mechanical energy into rotational energy, so as to drive the rotor shaft 801 to rotate.
[0046] The rotor shaft 801 respectively passes through the upper end cover 802 and the lower end cover 803. Among them, the rotor shaft 801 is connected to the upper end cover 802 through the first one-way bearing 806 and is connected to the lower end cover 803 through the second one-way bearing 807. The rotor shaft 801 can rotate around its own axis relative to the upper end cover 802 and the lower end cover 803. Under the action of the first one-way bearing 806 and the second one-way bearing 807, it can be ensured that the rotor shaft 801 only rotates in one direction during the rotation process, so as to ensure the stable output of the generator.
[0047] It is worth mentioning that in actual application, the second one-way bearing 807 can also be an ordinary bearing. That is, among the first one-way bearing 806 and the second one-way bearing 807, as long as at least one of them is a one-way bearing, the stable rotation of the rotor shaft 801 can be ensured.
[0048] A first gasket 808 may also be provided between the upper end cover 802 and the upper sealing cover 720, and a second gasket (not shown in the figure) may also be provided between the lower end cover 803 and the lower sealing cover 730. The gap between the upper end cover 802 and the upper sealing cover 720 can be adjusted by adjusting the first gasket 808, and the gap between the lower end cover 803 and the lower sealing cover 730 can also be adjusted by adjusting the second gasket.
[0049] A third gasket 809 may also be provided between the first substrate 110 and the second substrate 210. The third gasket 809 is detachably connected to the first substrate 110 and the second substrate 210 respectively, so that the gap between the first substrate 110 and the second substrate 210 can be adjusted by replacing the third gasket 809 with different thicknesses.
[0050] Continue to refer to Figure 2 , the charge pump nanogenerator in this embodiment may further include a slip ring 900, and the slip ring 900 may include a slip brush 910 and a conductive ring 920. Specifically, referring to Figure 10 and Figure 11 , the slip brush 910 may include a first metal brush 911, a second metal brush 912 and a slip brush cover 913, and the first metal brush 911 and the second metal brush 912 are respectively connected to the slip brush cover 913. The conductive ring 920 may include a first conductive ring 921, a second conductive ring 922, a first conductive ring base 923 and a second conductive ring base 924. The first conductive ring 921 is embedded in the first conductive ring base 923, and the second conductive ring 922 is embedded in the second conductive ring base 924. Moreover, the first metal brush 911 is connected to the first conductive ring 921, and the second metal brush 912 is connected to the second conductive ring 922.
[0051] The first conductive ring base 923 and the second conductive ring base 924 can be connected by a fourth gasket 930 so that the first conductive ring base 923 and the second conductive ring base 924 can remain relatively fixed. The fourth gasket 930 is also detachably connected to the first conductive ring base 923 and the second conductive ring base 924 respectively, so that the gap between the first conductive ring base 923 and the second conductive ring base 924 can be adjusted by replacing the fourth gasket 930 with different thicknesses.
[0052] In this embodiment, the slip brush 910 and the second substrate 210 can be connected by a first screw rod, and the first conductive ring base 923 can be connected to the rotor shaft 801. When the rotor shaft 801 drives the first substrate 110 to rotate, the first substrate 110 can drive the conductive ring 920 to rotate, thereby realizing signal transmission.
[0053] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these changes and modifications.
Claims
1. A charge pumped nanogenerator, characterized in that: It includes at least one pump power generation unit, a voltage multiplication circuit and a charge flow control component; The pump power generation unit includes a rotor and a stator, wherein the rotor includes a first substrate and a first output electrode and a second output electrode arranged on a side of the first substrate facing the stator, and the stator includes a second substrate and a first confined electrode and a second confined electrode arranged on a side of the second substrate facing the rotor, the first confined electrode and the second confined electrode have opposite polarities, and the charges in the first confined electrode and the charges in the second confined electrode are symmetrically confined; The rotor can rotate relative to the stator so that the first output electrode and the second output electrode generate alternating current; The input end of the voltage doubling circuit is connected to the first output electrode and the second output electrode respectively, and the output end of the voltage doubling circuit is connected to the first confined electrode and the second confined electrode respectively, and the voltage doubling circuit is used to convert the alternating current output by the first output electrode and the second output electrode into direct current; The charge flow control component includes a first charge flow control element and a second charge flow control element. The first charge flow control element is arranged between the output end of the voltage doubler circuit and the first confined electrode, and is adjacent to the first confined electrode. The second charge flow control element is arranged between the output end of the voltage doubler circuit and the second confined electrode, and is adjacent to the second confined electrode. The charge flow control component is used to prevent the charge in the confined electrode from flowing to the parasitic capacitance in the circuit, so as to block the direct connection between the confined electrode and the parasitic capacitance.
2. The charge pumped nanogenerator according to claim 1, characterized in that: The first charge flow control element includes a diode.
3. The charge-pumped nanogenerator according to claim 1 or 2, characterized in that: The second charge flow control element includes a diode.
4. The charge pumped nanogenerator according to claim 1, characterized in that: There are a plurality of first confined electrodes disposed on the second substrate, and the plurality of first confined electrodes are distributed at intervals around the circumference of the second substrate; There are a plurality of second confined electrodes disposed on the second substrate, and the plurality of second confined electrodes are spaced apart and distributed around the circumference of the second substrate; The first confinement electrodes and the second confinement electrodes are arranged alternately, and the first confinement electrodes are connected in parallel, and the second confinement electrodes are connected in parallel.
5. The charge-pumped nanogenerator according to claim 1, characterized in that: Also includes a first voltage stabilizing diode and a second voltage stabilizing diode; The first confined electrode is a positive electrode, the second confined electrode is a negative electrode, the voltage doubler circuit comprises a first input terminal, a second input terminal, a first output terminal, and a second output terminal, the first input terminal and the second input terminal are respectively connected to the first output electrode and the second output electrode, and the first output terminal and the second output terminal are respectively connected to the first confined electrode and the second confined electrode; The cathode of the first voltage stabilizing diode is connected to the first input terminal of the voltage doubling circuit, and the anode of the first voltage stabilizing diode is connected to the second output terminal of the voltage doubling circuit; The cathode of the second voltage-stabilizing diode is connected to the first output terminal of the voltage-doubling circuit, and the anode of the second voltage-stabilizing diode is connected to the second input terminal of the voltage-doubling circuit.
6. The charge-pumped nanogenerator according to claim 1, characterized in that: It also includes a sealed container, wherein the sealed container has a sealed cavity inside, and the sealed cavity is filled with a liquid dielectric; The first substrate and the second substrate are both disposed in the sealed cavity and immersed in the liquid dielectric.
7. The charge-pumped nanogenerator according to claim 6, characterized in that: The sealed container comprises a sealed silicone sleeve and an upper sealing cover and a lower sealing cover which are arranged opposite to each other; The sealing silicone sleeve is provided with a first opening and a second opening at two ends along the axial direction respectively; The upper sealing cover is located in the sealing silicone sleeve, the upper sealing cover abuts against the inner wall of the sealing silicone sleeve along the circumference of the sealing silicone sleeve, and the upper sealing cover covers the first opening; The lower sealing cover is located in the sealing silicone sleeve, the lower sealing cover abuts against the inner wall of the sealing silicone sleeve along the circumference of the sealing silicone sleeve, and the lower sealing cover covers the second opening.
8. The charge-pumped nanogenerator according to claim 7, characterized in that: It also includes a rotor shaft, the rotor shaft is passed through the first base, and the rotor shaft is fixedly connected to the first base; The second base is fixedly connected to a side of the upper sealing cover facing the lower sealing cover; A first limiting circular hole is provided at the center of the upper sealing cover, a first sealing plug is provided in the first limiting circular hole, a second limiting circular hole is provided at the center of the lower sealing cover, a second sealing plug is provided in the second limiting circular hole, and the rotor shaft passes through the first sealing plug and the second sealing plug.
9. The charge-pumped nanogenerator according to claim 1, characterized in that: There are a plurality of first output electrodes on the second substrate, and the plurality of first output electrodes are distributed at intervals around the circumference of the second substrate; There are a plurality of second output electrodes on the second substrate, and the plurality of second output electrodes are spaced apart and distributed around the circumference of the second substrate; The first output electrodes and the second output electrodes are arranged alternately, and the first output electrodes are connected in parallel, and the second output electrodes are connected in parallel.
10. The charge-pumped nanogenerator according to claim 1, characterized in that: It also includes a slip ring, which includes a sliding brush and a conductive ring. The sliding brush is connected to the stator, and the conductive ring is connected to the rotor.