Rotary Nanogenerator and Power Supply Device

Abstract

A rotary nanogenerator and a power supply device, the generator comprising: a pump generator unit and at least one main generator unit arranged coaxially, and a processing circuit. The pump generator unit comprises: a pump generator rotor and a pump generator stator arranged oppositely, one of which is provided with a triboelectric layer and the other is provided with a pair of pump electrodes. The main generator unit comprises: a main generator rotor and a main generator stator arranged oppositely with a gap therebetween, one of which is provided with a pair of storage electrodes and the other is provided with a pair of output electrodes; a dielectric layer arranged between the pair of storage electrodes and the pair of output electrodes. The processing circuit is used for rectifying and stabilizing the voltage, and is connected between the pair of pump electrodes and the pair of storage electrodes. The pump generator stator is fixed to the main generator stator, and the pump generator rotor and the main generator rotor rotate around the axis under an external excitation. The charge density of the main generator unit does not depend on friction or contact and is not restricted by air breakdown.

Description

Technical Field

[0001] The present disclosure belongs to the technical field of nano new energy and mechanical energy harvesting, and relates to a rotary nano generator and a power supply device. Background Art

[0002] The basic principle of triboelectric nanogenerator technology is to generate static charges on two surfaces by friction or contact, where at least one of the two surfaces in contact or in contact is the surface of an insulating material. When the contact surfaces are separated, the separation of the static charges generates a potential difference, thereby driving the directional movement of free charges in the induction electrode, realizing the harvesting of mechanical energy in the environment, and converting the mechanical energy into electrical energy. Triboelectric nanogenerator technology is particularly suitable for harvesting mechanical energy of low-frequency motion, and has advantages such as simple structure, low cost, and rich material selection.

[0003] Surface charge density is an important factor affecting the output power density of a triboelectric nanogenerator. The surface static charges in a triboelectric nanogenerator are generated by the friction or contact of two surfaces. Generally, a high charge density is easily generated only through intense friction or contact. However, in this case, large heat generation and wear are likely to occur on the surface, affecting the device life. At the same time, the charge density is also restricted by factors such as air breakdown. These factors limit the further improvement of the surface charge density and the output power density.

[0004] Therefore, it is necessary to propose a nano generator with a high output power density, and the charge density of this nano generator is no longer mainly generated by friction or contact and is not restricted by factors such as air breakdown. Summary of the Invention

[0005] (I) Technical Problems to be Solved

[0006] The present disclosure provides a rotary nano generator and a power supply device to at least partially solve the above-mentioned technical problems.

[0007] (II) Technical Solutions

[0008] According to one aspect of the present disclosure, a rotary nanogenerator is provided, comprising: a coaxially arranged pump generator unit and at least one main generator unit, and a processing circuit; wherein the pump generator unit comprises: a pump generator rotor and a pump generator stator arranged opposite to each other, one of the pump generator rotor and the pump generator stator being provided with a friction electrification layer, and the other being provided with a pump electrode pair; the main generator unit comprises: a main generator rotor and a main generator stator arranged opposite to each other and having an interval, one of the main generator rotor and the main generator stator being provided with a storage electrode pair, and the other being provided with an output electrode pair; a dielectric layer being provided between the storage electrode pair and the output electrode pair; the processing circuit is used for rectifying and stabilizing voltage, and is connected between the pump electrode pair and the storage electrode pair; the pump generator stator is fixed to the main generator stator, and the pump generator rotor and the main generator rotor rotate around the axis under external excitation.

[0009] In one embodiment of the present disclosure, the rotary nanogenerator also includes an axial connection structure, which includes: a connecting rod; a second rotor shaft hole is provided on the pump generator rotor, and the size of the second rotor shaft hole matches the size of the connecting rod; a first stator center hole is provided on the pump generator stator; a third rotor shaft hole is provided on the main generator rotor, and the size of the third rotor shaft hole matches the size of the connecting rod; a second stator center hole is provided on the main generator stator; wherein the connecting rod passes through the second rotor shaft hole, the first stator center hole, the third rotor shaft hole and the second stator center hole, and when the axial connection structure is rotated along the axial direction by external excitation, the pump generator rotor and the main generator rotor are driven to rotate synchronously via the second rotor shaft hole and the third rotor shaft hole.

[0010] In one embodiment of the present disclosure, the axial connection structure also includes: a first half-shaft, a second half-shaft, a first bearing and a second bearing, wherein the first half-shaft and the second half-shaft are respectively arranged on two sides opposite to each other of the pump generator unit and the at least one main generator unit; a first rotor shaft hole is provided on the first half-shaft and the second half-shaft, and the connecting rod passes through the first rotor shaft hole; the first bearing is clamped on the shoulder of the first half-shaft, and the second bearing is clamped on the shoulder of the second half-shaft.

[0011] In one embodiment of the present disclosure, the rotary nanogenerator also includes: a stator gasket, which is a circular ring structure, and the stator gasket is respectively arranged on the periphery of the pump generator rotor and the main generator rotor; wherein, the inner diameter of the stator gasket is larger than the outer diameter of the pump generator rotor, and the inner diameter of the stator gasket is larger than the outer diameter of the main generator rotor.

[0012] In an embodiment of the present disclosure, the pump generator stator, the main generator stator, and the stator gasket are fixed through fixing members.

[0013] In an embodiment of the present disclosure, the rotary nanogenerator further includes: a rotor gasket, and a gasket shaft hole for the connecting rod to pass through is provided on the rotor gasket. Wherein, the rotor gasket is located in the central hole of the first stator, the outer diameter of the rotor gasket is smaller than the inner diameter of the central hole of the first stator, and the thickness of the rotor gasket is greater than the thickness of the pump generator stator; or, the rotor gasket is located in the central hole of the second stator, the outer diameter of the rotor gasket is smaller than the inner diameter of the central hole of the second stator, and the thickness of the rotor gasket is greater than the thickness of the main generator stator; or, in adjacent pump generator units and main generator units, the pump generator rotor and the main generator rotor are adjacent, and the rotor gasket is arranged between the adjacent pump generator rotor and the main generator rotor.

[0014] In an embodiment of the present disclosure, the processing circuit includes: a rectifier bridge, a voltage stabilizing tube, and wires for circuit connection. The wires include: a first wire connected between the AC input terminal of the rectifier bridge and the pump electrode pair; and a second wire connected between the DC output terminal of the rectifier bridge and the storage electrode pair; the voltage stabilizing tube is connected in parallel between the DC output terminals of the rectifier bridge; wherein, the second rotor shaft hole and the third rotor shaft hole are multiple. Except for the part of the second rotor shaft hole and the part of the third rotor shaft hole penetrated by the connecting rod, the remaining second rotor shaft holes and third rotor shaft holes are used for limiting the wires, so that the processing circuit rotates synchronously with the pump generator rotor and the main generator rotor or the processing circuit is fixed between the pump generator stator and the main generator stator.

[0015] In an embodiment of the present disclosure, the arrangement order of the pump generator rotor and the pump generator stator in the pump generator unit is the same as or opposite to the arrangement order of the main generator rotor and the main generator stator in the main generator unit.

[0016] In an embodiment of the present disclosure, the rotary nanogenerator further includes: a first end cover and a second end cover, and the first end cover and the second end cover are respectively arranged on two sides of the pump generator unit and the at least one main generator unit facing away from each other.

[0017] In an embodiment of the present disclosure, the electrodes in the pump electrode pair, the storage electrode pair, and the output electrode pair are distributed in a fan shape or an interdigitated shape; and / or,

[0018] The materials of the electrodes in the pump electrode pair, the storage electrode pair, and the output electrode pair include one or more of the following conductive materials: metal materials, conductive carbon materials, or ITO; and / or,

[0019] The thickness of the electrodes in the pumping electrode pair, the storage electrode pair, and the output electrode pair is 50 nm to 50 μm;

[0020] The triboelectric layer and the dielectric layer are one or a composite material of the following insulating materials: polymers, inorganic oxides; and / or,

[0021] The thickness of the triboelectric layer and the dielectric layer is 0.5 μm to 50 μm.

[0022] In an embodiment of the present disclosure, two adjacent main generator units share an adjacent main generator stator / main generator rotor, and electrodes are respectively arranged on both sides of the shared main generator stator / main generator rotor. Among them, one side electrode is a storage electrode pair, and the other side electrode is an output electrode pair; or, the electrodes on both sides are both storage electrode pairs / output electrode pairs.

[0023] According to a second aspect of the present disclosure, a power supply device is provided, including any one of the above-mentioned rotary nanogenerators.

[0024] (III) Beneficial effects

[0025] As can be seen from the above technical solutions, the rotary nanogenerator and the power supply device provided by the present disclosure have the following beneficial effects:

[0026] (1) The mechanical energy of the pumping generator unit can be converted into electrical energy by using the coaxial rotational mechanical energy, and at the same time, the electrical energy generated by the pumping generator unit can be rectified and regulated and then directionally supplied to the storage electrode pair of at least one main generator unit. In this way, a continuous and directional high-density charge supply can be obtained on the storage electrode pair, and high-power power generation can be achieved by means of electrostatic induction in the main generator unit without the need for a contact or friction process. Therefore, the charge density of the main generator unit does not depend on friction or contact and is not restricted by air breakdown, greatly improving the output power of the nanogenerator, and having the advantages of a compact structure and a relatively high output power.

[0027] (2) Further, by using the connecting rod to respectively penetrate the second rotor shaft holes and the third rotor shaft holes on the pumping generator rotor and the main generator rotor, the pumping generator rotor and the main generator rotor are connected into an integral rotor structure. Under the action of an external excitation, the pumping generator rotor and the main generator rotor can rotate synchronously. At the same time, the pumping generator stator and the main generator stator are fixed and do not interfere with the rotation of the rotor. Since the pumping generator rotor and the main generator rotor rotate synchronously, whether the input and output ends of the processing circuit, the storage electrode pair, and the pumping electrode pair are fixed on the stator or the rotor, it does not affect the power generation process, effectively ensuring the continuity of the power generation process in terms of structure and maintaining a stable output under the condition of high-speed rotation. The rotary nanogenerator has good stability and relatively high reliability. Brief Description of the Drawings

[0028] Figure 1 It is an exploded view of a rotary nanogenerator according to an embodiment of the present disclosure.

[0029] Figure 2 As shown in Figure 1 It is an overall structure diagram of the rotary nanogenerator shown.

[0030] Figure 3 It is a schematic structural diagram of the first half shaft according to an embodiment of the present disclosure.

[0031] Figure 4 It is a schematic structural diagram of the pump generator rotor according to an embodiment of the present disclosure.

[0032] Figure 5 It is a schematic structural diagram of the pump generator stator according to an embodiment of the present disclosure.

[0033] Figure 6 It is a schematic structural diagram of the main generator rotor according to an embodiment of the present disclosure.

[0034] Figure 7 It is a schematic structural diagram of the main generator stator according to an embodiment of the present disclosure.

[0035] Figure 8 It is a working principle diagram of the rotary nanogenerator according to an embodiment of the present disclosure.

[0036]

Symbol Description

[0037] 100 - Rotor structure;

[0038] 110 - Connecting rod; 120 - First bearing;

[0039] 130 - First half shaft;

[0040] 131 - First rotor shaft hole; 132 - Axle shoulder;

[0041] 140 - Pump generator rotor;

[0042] 141 - Second rotor shaft hole; 142 - First pump electrode;

[0043] 143 - Second pump electrode; 144 - First base layer;

[0044] 150 - Rotor gasket;

[0045] 160 - Main generator rotor;

[0046] 161 - Third rotor shaft hole; 162 - First storage electrode;

[0047] 163 - The second storage electrode; 164 - The third base layer

[0048] 170 - The second half shaft; 180 - The second bearing

[0049] 190 - The processing circuit

[0050] 191 - The rectifier bridge; 192 - The voltage stabilizing diode

[0051] 193 - The wire

[0052] 193a - The first wire; 193b - The second wire

[0053] 200 - The stator structure

[0054] 210 - The first end cover; 220 - The first stator gasket

[0055] 230 - The pump generator stator

[0056] 231 - The first stator center hole; 232 - The first stator bolt hole

[0057] 233 - The triboelectric layer; 234 - The second base layer

[0058] 240 - The second stator gasket

[0059] 250 - The main generator stator

[0060] 251 - The second stator center hole; 252 - The second stator bolt hole

[0061] 253 - The first output electrode; 254 - The second output electrode

[0062] 255 - The dielectric layer; 256 - The fourth base layer

[0063] 260 - The third stator gasket

[0064] 270 - The second end cover

[0065] 300 - The load Detailed implementation manners

[0066] The present disclosure provides a rotary nanogenerator and a power supply device, which inject charges into a storage electrode pair in a main generator unit based on the electrical output of a pump generator unit. The injected charges are constrained by a dielectric layer. As the pump generator rotor in the pump generator continuously rotates, charges are continuously injected into the storage electrode pair, greatly increasing the charge density of the storage electrode pair in the main generator, so that the charge density of the main generator unit does not depend on friction or contact and is not restricted by air breakdown, greatly improving the output power of the nanogenerator, solving the technical problem that existing nanogenerators rely on friction or contact to generate high charge density. Furthermore, through structural settings, the stability and reliability of the output performance of the nanogenerator during high-speed rotation are effectively improved.

[0067] To make the objectives, technical solutions, and advantages of the present disclosure clearer and more understandable, the following further elaborates on the present disclosure in detail with reference to specific embodiments and the accompanying drawings.

[0068] First Embodiment

[0069] The first exemplary embodiment of the present disclosure provides a rotary nanogenerator.

[0070] Figure 1 FIG. is an exploded view of a rotary nanogenerator according to an embodiment of the present disclosure. Figure 2 As shown in Figure 1 FIG., is an overall structural diagram of the rotary nanogenerator.

[0071] Referring to Figure 1 and Figure 2 FIG., the rotary nanogenerator of the present disclosure includes a coaxially arranged pump generator unit and at least one main generator unit, and a processing circuit. Among them, the pump generator unit includes a relatively arranged pump generator rotor and a pump generator stator, with a triboelectric layer provided on one of the pump generator rotor and the pump generator stator, and a pump electrode pair provided on the other. The main generator unit includes a relatively arranged main generator rotor and a main generator stator with a gap therebetween, with a storage electrode pair provided on one of the main generator rotor and the main generator stator, and an output electrode pair provided on the other; a dielectric layer is provided between the storage electrode pair and the output electrode pair. The processing circuit is used for rectification and voltage stabilization and is connected between the pump electrode pair and the storage electrode pair. The pump generator stator is fixed to the main generator stator, and the pump generator rotor and the main generator rotor rotate around the axis under an external excitation.

[0072] The following will introduce each part of the rotary nanogenerator of this embodiment in detail with reference to the accompanying drawings.

[0073] In the present disclosure, the electrical output of the pump generator unit can be connected to a plurality of main generator units to provide directional charge injection to the storage electrode pairs of the plurality of main generator units. In this embodiment, only one main generator unit is taken as an example. For the case of two or more than two main generator units, the storage electrode pairs of each main generator unit can be connected in parallel to the pump electrode pair of the pump generator unit.

[0074] The following refers to Figures 4 - 7 to introduce the pump generator unit and the main generator unit.

[0075] Figure 4 FIG. is a schematic structural diagram of a pump generator rotor according to an embodiment of the present disclosure. Figure 5 FIG. is a schematic structural diagram of a pump generator stator according to an embodiment of the present disclosure.

[0076] In this embodiment, referring to Figure 1 as shown, the pump generator unit includes: a pump generator rotor 140 and a pump generator stator 230. The pump generator rotor 140 and the pump generator stator 230 are disposed opposite to each other, and relative rotation occurs between the pump generator rotor 140 and the pump generator stator 230, so as to convert mechanical energy into electrical energy. The main generator unit includes: a main generator rotor 160 and a main generator stator 250, and the main generator rotor 160 and the main generator stator 250 are disposed opposite to each other and have a gap.

[0077] In the present disclosure, one of the pump generator rotor and the pump generator stator is provided with a triboelectric layer, and the other is provided with a pump electrode pair. The main generator unit includes: a main generator rotor and a main generator stator that are disposed opposite to each other and have a gap, and one of the main generator rotor and the main generator stator is provided with a storage electrode pair, and the other is provided with an output electrode pair; a dielectric layer is disposed between the storage electrode pair and the output electrode pair.

[0078] In an embodiment, it may be that the storage electrode pair is disposed on the main generator rotor, and at the same time, the output electrode pair is disposed on the main generator stator; or it may be that the storage electrode pair is disposed on the main generator stator, and at the same time, the output electrode pair is disposed on the main generator rotor. Correspondingly, in the pump generator unit, the situation is similar, but in the corresponding relationship between the pump generator unit and the main generator unit, it is necessary to ensure that the pump electrode pair and the storage electrode pair are both disposed on the stator or the rotor to avoid the wire of the processing circuit connected between the pump electrode pair and the storage electrode pair from getting entangled.

[0079] In the above two setting methods, in the former, since the output electrode pair is arranged on the stator of the generator and does not rotate with the main generator rotor, there is no need to set a slip ring structure when the output electrode pair supplies power externally, and the output method is simple. The corresponding pumping electrode pair and storage electrode pair are both rotatable, and the rotation states of the pumping electrode pair and the storage electrode pair can be set to ensure that the processing circuit between the two will not be wound as they rotate. In the latter, since the storage electrode pair is arranged on the stator of the main generator, and at this time the corresponding pumping electrode pair is also arranged on the stator of the pumping generator, the input and output ends of the processing circuit between the pumping electrode pair and the storage electrode pair are fixed and will not rotate. At this time, the structure of the processing circuit is simplified, but only the output electrode pair will rotate, and the output circuit may be relatively more complex.

[0080] In a preferred embodiment, the storage electrode pair and the output electrode pair are arranged opposite to each other, and a dielectric layer is arranged on the surface of the output electrode pair to insulate between the storage electrode pair and the output electrode pair. For example, a storage electrode pair is arranged on one side of the main generator rotor opposite to the main generator stator, and an output electrode pair is arranged on one side of the main generator stator opposite to the main generator rotor.

[0081] Of course, in other embodiments of the present disclosure, it may be that the storage electrode pair and the output electrode pair are arranged opposite to each other, and the dielectric layer is arranged on the surface of the storage electrode pair. However, in this embodiment, if the voltage of the corresponding storage electrode pair is very high, the dielectric layer on the surface of the storage electrode pair will generate a polarization effect to play an electrostatic shielding role, then the electrostatic induction effect between the corresponding storage electrode pair and the output electrode pair will become poor.

[0082] In the present disclosure, the number of main generator units can be 2 or more than 2. The combination methods of multiple main generator units can be various. One method can be to use the above-described main generator unit as the basic unit and arrange them in sequence according to the structure of the main generator unit. The space between each main generator unit can be separated by gaskets and the fixation between each main generator unit can be achieved through fixing parts. Another method can be that two adjacent main generator units share an adjacent stator / rotor, and electrodes are arranged on both sides of the shared stator / rotor. One side electrode is a storage electrode pair, and the other side electrode is an output electrode pair; or the electrodes on both sides are both storage electrode pairs / output electrode pairs. The latter scheme is preferred, that is, the electrodes on both sides are the same. For example, refer to Figure 1In the left-right direction shown, the structures of the two main generator units are as follows from left to right: a first main generator rotor, a first storage electrode pair is arranged on the right side of the first main generator rotor; a common main generator stator, a first output electrode pair is arranged on the left side of the main generator stator, and a second output electrode pair is arranged on the right side; a second main generator rotor, a second storage electrode pair is arranged on the left side of the second main generator rotor; a first dielectric layer is arranged on the left side surface of the first output electrode pair; and a second dielectric layer is arranged on the right side surface of the second output electrode pair.

[0083] In the embodiment of the present disclosure, the arrangement order of the pump generator rotor and the pump generator stator in the pump generator unit is consistent with or opposite to the arrangement order of the main generator rotor and the main generator stator in the main generator unit. For example, in the pump generator unit, Figure 1 In the example direction, from left to right, there are: pump generator rotor and pump generator stator; in one example, the arrangement of the stator and rotor in the main generator unit can be arranged in the same order as the stator and rotor in the pump generator unit, for example, from left to right in the main generator unit, there are: main generator rotor and main generator stator. In another example, the arrangement of the stator and rotor in the main generator unit can be arranged in the opposite order of the stator and rotor in the pump generator unit, for example, from left to right in the pump generator unit, there are: pump generator rotor and pump generator stator, and from left to right in the main generator unit, there are: main generator stator and main generator rotor.

[0084] In one embodiment of the present disclosure, the electrodes in the pump electrode pairs, storage electrode pairs and output electrode pairs are distributed in a fan-shaped or interdigitated shape. The shapes and quantities of the electrodes in the storage electrode pairs and output electrode pairs can be kept the same.

[0085] In one embodiment of the present disclosure, the materials of the electrodes in the pump electrode pair, the storage electrode pair and the output electrode pair include but are not limited to one or more of the following conductive materials: metal material, conductive carbon material or ITO.

[0086] In one embodiment of the present disclosure, the thickness of the electrodes in the pump electrode pair, the storage electrode pair and the output electrode pair is 50 nm to 50 μm.

[0087] In the following, a pump generator rotor is provided with a pump electrode pair, and a pump generator stator is provided with a triboelectric layer as an example.

[0088] Reference Figure 4 As shown, the pump generator rotor 140 is provided with a pump electrode pair. Specifically, the pump generator rotor 140 includes: a first substrate layer 144 , and a first pump electrode 142 and a second pump electrode 143 disposed on the surface of the first substrate layer 144 .

[0089] Continue to refer to Figure 4 As shown, the first pumping electrode 142 and the second pumping electrode 143 form a pair of pumping electrodes. There is a gap between the first pumping electrode 142 and the second pumping electrode 143. As long as the distribution forms of two independent electrodes with a gap between the first pumping electrode 142 and the second pumping electrode 143 are within the protection scope of the present disclosure, here, the pair of pumping electrodes being in a fan shape or an interdigital shape is taken as an example. The first pumping electrode 142 and the second pumping electrode 143 are in an interdigital distribution, Figure 4 which exemplarily shows that the first pumping electrode 142 radiates outward along the center and has two grids, and the second pumping electrode 143 radiates inward. The second pumping electrode 143 and the first pumping electrode 142 form an interdigital distribution. Here, the number and size of the grids can be adjusted according to actual situations. Of course, exemplarily, the first pumping electrode 142 and the second pumping electrode 143 can also be the electrodes in two groups of electrodes divided from an even number of fan shapes arranged around the center, and these two groups of electrodes are arranged at intervals.

[0090] Refer to Figure 5 As shown, the stator 230 of the pumping generator is provided with a triboelectric layer. Specifically, the stator 230 of the pumping generator includes: a second base layer 234, and a triboelectric layer 233 provided on the surface of the second base layer 234.

[0091] Hereinafter, an example will be given with the main generator rotor provided with a pair of storage electrodes, and the main generator stator provided with an output electrode pair and a dielectric layer.

[0092] Figure 6 It is a schematic structural diagram of the main generator rotor shown in an embodiment of the present disclosure. Figure 7 It is a schematic structural diagram of the main generator stator shown in an embodiment of the present disclosure.

[0093] Refer to Figure 6 As shown, the main generator rotor 160 is provided with a pair of storage electrodes. Specifically, the main generator rotor 160 includes: a third base layer 164, and a first storage electrode 162 and a second storage electrode 163 provided on the surface of the third base layer 164.

[0094] Refer to Figure 6 As shown, the first storage electrode 162 and the second storage electrode 163 form a pair of storage electrodes. There is a gap between the first storage electrode 162 and the second storage electrode 163. As long as the distribution forms of two independent electrodes with a gap between the first storage electrode 162 and the second storage electrode 163 are within the protection scope of the present disclosure, here, the pair of pumping electrodes being in a fan shape or an interdigital shape is taken as an example. Figure 6Exemplarily shown in the figure, the first storage electrode 162 radiates outward along the center and has 9 grids. The second storage electrode 163 radiates inward, and the second storage electrode 163 and the first storage electrode 162 form an interdigitated distribution. Here, the number and size of the grids can be adjusted according to the actual situation. Of course, exemplarily, the first storage electrode 162 and the second storage electrode 163 can also be the electrodes in two groups of electrodes divided from an even number of sectors arranged around the center, and these two groups of electrodes are arranged at intervals.

[0095] Referring to Figure 7 As shown, the main generator stator 250 is provided with output electrode pairs and a dielectric layer. Specifically, the main generator stator 250 includes: a fourth base layer 256, a first output electrode 253 and a second output electrode 254 disposed on the surface of the fourth base layer 256; and a dielectric layer 255 disposed on the surfaces of the first output electrode 253 and the second output electrode 254. The dielectric layer 255 is located between the output electrode pairs and the storage electrode pairs to insulate the stator electrodes and the rotor electrodes.

[0096] Continuing to refer to Figure 7 As shown, the first output electrode 253 and the second output electrode 254 form an output electrode pair and have a gap therebetween. As long as the distribution forms of two independent electrodes with a gap between the first output electrode 253 and the second output electrode 254 are within the protection scope of the present disclosure, here, the pump electrode pair is taken as an example in a fan-shaped or interdigitated distribution. Figure 7 Exemplarily shown in the figure, the first output electrode 253 radiates outward along the center and has 9 grids. The second output electrode 254 radiates inward, and the second output electrode 254 and the first output electrode 253 form an interdigitated distribution. Here, the number and size of the grids can be adjusted according to the actual situation. Of course, exemplarily, the first output electrode 253 and the second output electrode 254 can also be the electrodes in two groups of electrodes divided from an even number of sectors arranged around the center, and these two groups of electrodes are arranged at intervals.

[0097] In this embodiment, in the main generator unit, the shapes of the output electrode pairs correspond to those of the storage electrode pairs, and the number of electrodes in the output electrode pairs is equal to that in the storage electrode pairs.

[0098] In an exemplary instance, the first base layer 144, the second base layer 234, the third base layer 164, and the fourth base layer 256 can be sheet-like structures, and the shapes observed along the axial direction can be one or a combination of the following shapes: circular, elliptical, triangular, polygonal with more than three sides, or irregular figures, etc. Preferably, they are regular figures, for example, they can be circular. The first base layer 144, the second base layer 234, the third base layer 164, and the fourth base layer 256 are all prepared from insulating materials.

[0099] Figure 8 This is the working principle diagram of a rotary nanogenerator according to an embodiment of the present disclosure.

[0100] The pump generator rotor 140 rotates relative to the pump generator stator 230. Referring to Figure 8 as shown, for example, equal amounts of opposite charges are generated by triboelectrification between the first pump electrode 142 and the triboelectric layer 233. As the rotation progresses, the relative positions of the triboelectric layer 233 with respect to the first pump electrode 142 and the second pump electrode 143 change. Therefore, a potential difference is generated between the first pump electrode 142 and the second pump electrode 143 based on triboelectrification and electrostatic induction, thereby generating an electrical output. The electrical output generated in the pump generator unit is output to the first storage electrode 162 and the second storage electrode 163 through a processing circuit 190 for charge storage. The main generator rotor rotates relative to the main generator stator. The rotation situation is indicated by the rotational angular velocity ω and arrows in the figure; an electrical output is achieved at the output electrode pair based on the charge induction of the storage electrode pair and the output electrode pair, that is, an electrical output is achieved at the first output electrode 253 and the second output electrode 254. A load 300 is connected across the first output electrode 253 and the second output electrode 254, and power can be supplied to the load 300.

[0101] In one embodiment, referring to Figure 8 as shown, the processing circuit 190 includes: a rectifier bridge 191, a voltage regulator tube 192, and wires 193 for circuit connection. The wires 193 include: a first wire 193a connected between the AC input terminal of the rectifier bridge and the pump electrode pair; and a second wire 193b connected between the DC output terminal of the rectifier bridge and the storage electrode pair. The voltage regulator tube 192 is connected in parallel between the DC output terminals of the rectifier bridge 191.

[0102] It should be noted that actually there is a gap between the main generator stator and the main generator rotor. Figure 8 The dielectric layer 255 is used to illustrate the electrical isolation state between the main generator stator and the main generator rotor in Figure 8 which is a circuit schematic diagram, so the spatial position relationship is not shown.

[0103] The pump generator rotor rotates relative to the pump generator stator, generates electrical output at the pump electrode pair, and outputs to the storage electrode pair for charge storage after rectification and voltage stabilization by the processing circuit; in addition, the main generator rotor rotates relative to the main generator stator, and the main generator rotor and the main generator stator have a high charge density without contact friction. Based on the charge induction between the storage electrode pair and the output electrode pair, a high-power electrical output is achieved at the output electrode pair. The pump generator unit and the main generator unit are coaxially arranged and can rotate synchronously or asynchronously (with equal or unequal speeds, and the rotation start time can be the same or different). Based on the electrical output of the pump generator unit, charges are injected into the storage electrode pair in the main generator unit. The injected charges are constrained by the dielectric layer. As the pump generator rotor in the pump generator continues to rotate, charges are continuously injected into the storage electrode pair, which greatly increases the charge density of the storage electrode pair in the main generator, so that the charge density of the main generator unit does not depend on friction or contact, and is not constrained by air breakdown, which greatly increases the output power of the nanogenerator.

[0104] In this embodiment, the rotation form of the pump generator rotor 140 and the main generator rotor 160 is not limited. The pump generator unit and the main generator unit are coaxially arranged and can rotate synchronously or asynchronously. For example, the rotation speeds of the pump generator rotor 140 and the main generator rotor 160 can be equal or unequal, and the rotation start time can be the same or different. There are various forms of causing the pump generator rotor 140 and the main generator rotor 160 to rotate. For example, a force may be applied around the periphery of the pump generator rotor 140 to rotate the pump generator rotor 140, and a force may be applied around the periphery of the main generator rotor 160 to rotate the main generator rotor 160. The rotation processes of the pump generator rotor 140 and the main generator rotor 160 are independent of each other. Or other ways of driving the above-mentioned pump generator rotor 140 and the main generator rotor 160 to rotate separately are all within the protection scope of the present disclosure. Of course, in the present disclosure, the rotation of the pump generator rotor 140 and the main generator rotor 160 may also be interdependent, such as the case where an axial connection structure is provided between the pump generator rotor 140 and the main generator rotor 160 to achieve synchronous rotation as will be introduced in the second embodiment. Of course, it can also be expanded in the manner described above, and the axial connection structure respectively connected to the pump generator unit and at least one main generator unit can independently achieve the rotation of the pump generator rotor 140 and the main generator rotor 160.

[0105] In summary, the rotary nanogenerator in this embodiment can utilize the mechanical energy of coaxial rotation to achieve the mechanical - electrical energy conversion of the pump generator unit and simultaneously supply the electrical energy generated by the pump generator unit to the storage electrode pair of at least one main generator unit after rectification and voltage stabilization. In this way, there can be a continuous and directional high - density charge supply on the storage electrode pair. In the main generator unit, high - power power generation can be achieved through electrostatic induction without the need for a contact or friction process. Thus, the charge density of the main generator unit does not depend on friction or contact and is not restricted by air breakdown, greatly improving the output power of the nanogenerator, and having the advantages of a compact structure and a relatively high output power.

[0106] Second Embodiment

[0107] In the second exemplary embodiment of the present disclosure, a rotary nanogenerator is provided. Based on the first embodiment, the structure of the rotary nanogenerator in this embodiment is further optimized. In the rotary nanogenerator of this embodiment, both the pump generator rotor and the main generator rotor are components of the rotor structure. The pump generator rotor and the main generator rotor are connected by a connecting rod to achieve synchronous rotation. Whether the input and output terminals of the processing circuit, the storage electrode pair, and the pump electrode pair are fixed on the stator or the rotor does not affect the power generation process, effectively ensuring the continuity of the power generation process in terms of structure and maintaining a stable output even under high - speed rotation conditions. The rotary nanogenerator has good stability and high reliability.

[0108] Referring to Figure 1 As shown, in this embodiment, the pump generator rotor 140 and the main generator rotor 160 are both components of the rotor structure 100. The pump generator stator 230 and the main generator stator 250 are fixed to each other and are both components of the stator structure 200. The pump generator rotor and the main generator rotor perform synchronous rotational motion around the axis under an external excitation.

[0109] In this embodiment, compared with the structure of the first embodiment, the rotary nanogenerator further includes an axial connection structure. The axial connection structure includes: a connecting rod 110.

[0110] Referring to Figure 4 As shown, a second rotor shaft hole 141 is provided on the pump generator rotor 140, and the size of the second rotor shaft hole 141 matches the size of the connecting rod 110. Referring to Figure 5 As shown, a first stator center hole 231 is provided on the pump generator stator 230. Referring to Figure 6 As shown, a third rotor shaft hole 161 is provided on the main generator rotor 160, and the size of the third rotor shaft hole 161 matches the size of the connecting rod 110. Referring to Figure 7As shown, a second stator center hole 251 is provided on the main generator stator 250.

[0111] Combined with Figure 1 、 Figures 4 - 7 As shown, the connecting rod 110 passes through the second rotor shaft hole 141, the first stator center hole 231, the third rotor shaft hole 161 and the second stator center hole 251. When the axial connection structure rotates along the axis under external excitation, the pump generator rotor and the main generator rotor are driven to rotate synchronously via the second rotor shaft hole 141 and the third rotor shaft hole 161.

[0112] Figure 3 It is a schematic structural diagram of the first half shaft according to an embodiment of the present disclosure.

[0113] In an embodiment of the present disclosure, with reference to Figure 1 and Figure 3 As shown, the above axial connection structure further includes: a first half shaft 130, a second half shaft 170, a first bearing 120 and a second bearing 180.

[0114] The second half shaft 170 has the same structure as the first half shaft 130. The structure of the first half shaft will be introduced below with reference to Figure 3 Referring to Figure 3 As shown, the first half shaft 130 is a cylinder, and the bottom of the first half shaft 130 has a shaft shoulder 132. A first rotor shaft hole 131 is provided on the first half shaft 130, and the first rotor shaft hole 131 penetrates the first half shaft 130. The first rotor shaft hole 131 may include a shaft hole part at the center of the cylinder and a shaft hole part arranged around the axis. The connecting rod 110 penetrates the shaft hole part arranged around the axis.

[0115] In this embodiment, the first half shaft 130 and the second half shaft 170 are respectively arranged on two opposite sides of the pump generator unit and the at least one main generator unit. That is to say, the first half shaft 130 is arranged on the first side of the pump generator unit, and the second half shaft 170 is arranged on the second side of the at least one main generator unit. The first side and the second side are two opposite sides of the pump generator unit and the at least one main generator unit. For the case of multiple main generators, with reference to the direction in Figure 1 The first half shaft 130 is arranged on the left side of the pump generator unit, and the second half shaft is arranged on the right side of the outermost main generator unit.

[0116] Referring to the above introduction, in the rotary nanogenerator of this embodiment, first rotor shaft holes are provided on both the first half shaft 130 and the second half shaft 170, and the connecting rod penetrates through the first rotor shaft holes. The first bearing 120 is clamped on the shaft shoulder of the first half shaft, and the second bearing 180 is clamped on the shaft shoulder of the second half shaft.

[0117] By setting the first half shaft 130 and the first bearing 120, as well as the second half shaft 170 and the second bearing 180, when the pump generator rotor 140 and the main generator rotor 160 rotate, especially at high speeds, the bearings help provide radial and axial load-carrying capacities, avoiding wobbling during the high-speed rotation of the pump generator rotor 140 and the main generator rotor 160, and at the same time reducing friction through the way of rolling friction.

[0118] In an embodiment of the present disclosure, the above-mentioned rotary nanogenerator further includes: a first end cap 210 and a second end cap 270, and the first end cap 210 and the second end cap 270 are respectively disposed on two opposite sides of the pump generator unit and at least one main generator unit. The above-mentioned first end cap 210 and second end cap 270 are respectively used to support and fix the first bearing 120 and the second bearing 170. Referring to Figure 1 and Figure 2 As shown, a concave cavity ring is provided at the portion where the first end cap 210 abuts against the first bearing 120. The hollow part of the concave cavity ring allows the first half shaft 130 to pass through, and the space defined by the concave cavity ring is used to place the first bearing 120. The structure of the second end cap 270 is similar to that of the first end cap 210 and will not be repeated here. Of course, for the case where the outside of the nanogenerator is a stator (including the main generator stator and the pump generator stator), the stator can be directly used as the structure for fixing the bearings, or the end caps can be not provided. In an embodiment of the present disclosure, referring to Figure 1 As shown, the rotary nanogenerator further includes: a stator gasket, which is a circular ring structure, and the stator gasket is respectively disposed around the pump generator rotor and the main generator rotor. In an embodiment, the inner diameter of the stator gasket is larger than the outer diameter of the pump generator rotor, and the inner diameter of the stator gasket is larger than the outer diameter of the main generator rotor.

[0119] For example, referring to Figure 1 the first stator gasket 220 and the second stator gasket 240 shown in the figure are respectively disposed around the pump generator rotor 140 and the main generator rotor 160. Continuing to refer to Figure 1 As shown, by setting the first stator gasket 220 and the second stator gasket 240, the first stator gasket 220 is used to separate the first end cap 210 and the pump generator stator 230 axially, providing space for the pump generator rotor 140 axially, and setting the first stator gasket 220 helps to keep the first end cap 210 and the pump generator stator 230 stable. The function of the second stator gasket 240 is the same as that of the first stator gasket 220. The second stator gasket 240 provides axial space for the main generator rotor 160, and by setting the second stator gasket 240, during the rotation of the main generator rotor 160, it helps to ensure the stability of the pump generator stator 230 and the main generator stator 250.

[0120] In one embodiment, the stator gasket is also disposed between at least one main generator unit and the second end cover. For example, the third stator gasket 260 in this embodiment is disposed between the main generator stator 250 of the rightmost main generator unit and the second end cover 270.

[0121] In one embodiment of the present disclosure, the pump generator stator, the main generator stator, and the stator gasket are fixed by fixing members. For example, referring to Figure 5 and Figure 7 As shown, first stator bolt holes 232 are provided at the edge of the pump generator stator 230, and second stator bolt holes 252 are provided at the edge of the main generator stator 250. The pump generator stator 230, the stator gasket (including the first stator gasket 220, the second stator gasket 240, and the third stator gasket 260), and the main generator stator 250 are fixed by bolts.

[0122] In one embodiment of the present disclosure, the rotary nanogenerator further includes: a rotor gasket, and a gasket shaft hole through which the connecting rod passes is provided on the rotor gasket. The rotor gasket can define the interval between the rotors or the interval between the rotor and the stator in the axial direction, which can be the interval between the pump generator rotor and the main generator rotor, or the interval between the pump generator stator and the main generator rotor, or the interval between the pump generator rotor and the main generator stator, ensuring that both the pump generator rotor and the main generator rotor can rotate without affecting the components in the stator structure 200.

[0123] In the present disclosure, the arrangement order of the pump generator rotor and the pump generator stator in the pump generator unit is the same as or opposite to the arrangement order of the main generator rotor and the main generator stator in the main generator unit. For example, in a rotary nanogenerator including one pump generator unit and one main generator unit, there can be four arrangement ways. Along the Figure 1 shown direction, the first one, from left to right in sequence is: pump generator rotor, pump generator stator, main generator rotor, main generator stator. The second one, from left to right in sequence is: pump generator rotor, pump generator stator, main generator stator, main generator rotor. The third one, from left to right in sequence is: pump generator stator, pump generator rotor, main generator rotor, main generator stator. The fourth one, from left to right in sequence is: pump generator stator, pump generator rotor, main generator stator, main generator rotor. Corresponding to different structures, the way of setting the rotor gasket can be adaptively set.

[0124] In one embodiment, for example, corresponding to the first case, reference can be made to Figure 1In the illustrated scenario, in adjacent pump generator units and main generator units, the pump generator stator 230 is adjacent to the main generator rotor 160, and the rotor spacer 150 is located within the first stator central hole 231 of the pump generator stator 230. The outer diameter of the rotor spacer 150 is smaller than the inner diameter of the first stator central hole 231, and the thickness of the rotor spacer 150 is greater than the thickness of the pump generator stator 230.

[0125] In another embodiment, for example, corresponding to the fourth case, in adjacent pump generator units and main generator units, the pump generator rotor is adjacent to the main generator stator, and the rotor spacer is correspondingly located within the second stator central hole 251 of the main generator stator 250. The outer diameter of the rotor spacer is smaller than the inner diameter of the second stator central hole, and the thickness of the rotor spacer is greater than the thickness of the main generator stator.

[0126] In yet another embodiment, for example, corresponding to the third case, in adjacent pump generator units and main generator units, the pump generator rotor is adjacent to the main generator rotor, and the rotor spacer is disposed between the adjacent pump generator rotor and main generator rotor.

[0127] In one embodiment, for example, corresponding to the third case, in adjacent pump generator units and main generator units, the pump generator stator is adjacent to the main generator stator, and a stator spacer can be disposed between the pump generator stator and the main generator stator to separate the two.

[0128] The structure of the processing circuit 190 can be referred to the description of the foregoing first embodiment. In this embodiment, the second rotor shaft hole 141 and the third rotor shaft hole 161 are multiple. Similar to the case where the foregoing first rotor shaft hole 131 can include a shaft hole portion at the axis of the cylinder and a shaft hole portion disposed around the axis, refer to Figure 4 and Figure 6 As shown, the second rotor shaft hole 141 and the third rotor shaft hole 161 can also include a shaft hole portion at the axis of the cylinder and a shaft hole portion disposed around the axis. The specific distribution spacing and distribution shape can be set according to actual needs.

[0129] Among the multiple second rotor shaft holes 141 and multiple third rotor shaft holes 161, except for the part of the second rotor shaft holes and part of the third rotor shaft holes penetrated by the connecting rod 110, the remaining second rotor shaft holes and third rotor shaft holes are used for limiting the wires, so that the processing circuit rotates synchronously with the pump generator rotor and the main generator rotor or the processing circuit is fixed between the pump generator stator and the main generator stator.

[0130] In this embodiment, refer to Figure 1As shown, the stator structure 200 includes: a first end cover 210, a first stator gasket 220, a pump generator stator 230, a second stator gasket 240, a main generator stator 250, a third stator gasket 260, and a second end cover 270. Stator bolt holes are provided on the first end cover 210, the first stator gasket 220, the pump generator stator 230, the second stator gasket 240, the main generator stator 250, the third stator gasket 260, and the second end cover 270. The components in the stator structure 200 are fixed by bolts passing through the respective stator bolt holes.

[0131] In this embodiment, with reference to Figure 1 As shown, the rotor structure 100 includes: a connecting rod 110, a first bearing 120, a first half shaft 130, a pump generator rotor 140, a rotor gasket 150, a main generator rotor 160, a second half shaft 170, and a second bearing 180. The rotor structure 100 is fixedly connected by passing the connecting rod 110 through the rotor shaft holes provided on the first half shaft 130, the pump generator rotor 140, the rotor gasket 150, the main generator rotor 160, and the second half shaft 170, thereby achieving integrated synchronous rotation. The stability of rotation is achieved under the radial and axial load bearing of the first bearing 120 and the second bearing 180.

[0132] In one example, take the processing circuit 190 rotating synchronously with the pump generator rotor and the main generator rotor as an example.

[0133] In summary, in this embodiment of the rotary nanogenerator, by using the connecting rod to pass through the second rotor shaft hole and the third rotor shaft hole on the pump generator rotor and the main generator rotor respectively, the pump generator rotor and the main generator rotor become an integral rotor structure. Under the action of an external excitation, the pump generator rotor and the main generator rotor can rotate synchronously. At the same time, the pump generator stator and the main generator stator are fixed and do not interfere with the rotation of the rotor. Since the pump generator rotor and the main generator rotor rotate synchronously, whether the input and output terminals of the processing circuit, the storage electrode pair, and the pump electrode pair are fixed on the stator or the rotor, it does not affect the power generation process. Structurally, it effectively ensures the continuity of the power generation process and can maintain a stable output even under high-speed rotation conditions. This rotary nanogenerator has good stability and high reliability.

[0134] Third Embodiment

[0135] In the third exemplary embodiment of the present disclosure, a power supply device is provided, including any one of the above rotary nanogenerators.

[0136] In summary, the present disclosure provides a rotary nanogenerator and a power supply device. By utilizing the mechanical energy of coaxial rotation, the mechanical energy - electrical energy conversion of the pumping generator unit can be achieved, and at the same time, the electrical energy generated by the pumping generator unit can be rectified and regulated and then directionally supplied to the storage electrode pairs of at least one main generator unit. Thus, a continuous and directional high - density charge supply can be obtained on the storage electrode pairs. In the main generator unit, high - power power generation can be achieved by means of electrostatic induction without the need for a contact or friction process. As a result, the charge density of the main generator unit does not depend on friction or contact and is not restricted by air breakdown, greatly improving the output power of the nanogenerator, and having the advantages of a compact structure and a relatively high output power. Further, in the rotary nanogenerator, by using a connecting rod to penetrate the second rotor shaft holes and the third rotor shaft holes on the pumping generator rotor and the main generator rotor respectively, the pumping generator rotor and the main generator rotor are connected into an integral rotor structure. Under the action of an external excitation, the pumping generator rotor and the main generator rotor can rotate synchronously. At the same time, the pumping generator stator and the main generator stator are fixed and do not interfere with the rotation of the rotor. Since the pumping generator rotor and the main generator rotor rotate synchronously, whether the input and output ends of the processing circuit, the storage electrode pairs, and the pumping electrode pairs are fixed on the stator or the rotor, it does not affect the power generation process, effectively ensuring the continuity of the power generation process in terms of structure and maintaining a stable output even under high - speed rotation conditions. The rotary nanogenerator has good stability and high reliability.

[0137] Unless otherwise defined, in the embodiments of the present disclosure and the drawings, the same reference numerals represent the same meaning. For clarity, in the drawings used to describe the embodiments of the present disclosure, the thickness of layers or regions is enlarged; and in the drawings of some embodiments of the present disclosure, only the structures related to the concept of the present disclosure are shown, and other structures can refer to the general design. Additionally, some drawings only schematically show the basic structures of the embodiments of the present disclosure and omit the detailed parts.

[0138] Unless otherwise defined, technical terms or scientific terms used in this disclosure shall have the ordinary meanings as understood by those of ordinary skill in the art to which this disclosure pertains. The terms "first", "second" and similar terms used in this disclosure do not denote any order, quantity or importance, but are merely used to distinguish different components. Words such as "comprising" or "including" have an open meaning, and do not exclude other components, parts, portions or items in addition to the explicitly listed elements, components, parts or items. Words such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. Terms such as "upper", "lower", "left", "right" are only used to indicate relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly. It is understood that when an element such as a layer, film, region or substrate is referred to as being "on" or "under" another element, the element may be "directly" on or under the other element, or there may be intervening elements.

[0139] Unless there are technical obstacles or contradictions, the above various embodiments of this disclosure can be freely combined to form additional embodiments, and these additional embodiments are all within the protection scope of this disclosure.

[0140] The specific embodiments described above further elaborate on the purpose, technical solutions and beneficial effects of this disclosure. It should be understood that the above are only specific embodiments of this disclosure and are not used to limit this disclosure. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this disclosure shall be included within the protection scope of this disclosure.

Claims

1. A rotary nanogenerator, characterized in that, include: a coaxially arranged pump-generator unit and at least one main generator unit, and processing circuitry; The pump generator unit comprises: a pump generator rotor and a pump generator stator which are arranged opposite to each other, one of the pump generator rotor and the pump generator stator is provided with a triboelectric layer, and the other is provided with a pump electrode pair; The main generator unit comprises: a main generator rotor and a main generator stator which are arranged opposite to each other and have a gap, one of the main generator rotor and the main generator stator is provided with a storage electrode pair, and the other is provided with an output electrode pair; a dielectric layer is provided between the storage electrode pair and the output electrode pair; The processing circuit is used for rectification and voltage stabilization, and is connected between the pump electrode pair and the storage electrode pair; The pump generator stator is fixed to the main generator stator, and the pump generator rotor and the main generator rotor rotate around the axis under external excitation.

2. The rotary nanogenerator according to claim 1, wherein Also included is an axial connection structure, the axial connection structure comprising: a connecting rod; The pump generator rotor is provided with a second rotor shaft hole, the size of which matches the size of the connecting rod; the pump generator stator is provided with a first stator center hole; The main generator rotor is provided with a third rotor shaft hole, the size of which matches the size of the connecting rod; the main generator stator is provided with a second stator center hole; Among them, the connecting rod passes through the second rotor shaft hole, the first stator center hole, the third rotor shaft hole and the second stator center hole. When the axial connection structure is rotated along the axial direction by external excitation, the pump generator rotor and the main generator rotor are driven to rotate synchronously through the second rotor shaft hole and the third rotor shaft hole.

3. The rotary nanogenerator according to claim 2, wherein The axial connection structure further includes: a first half shaft, a second half shaft, a first bearing and a second bearing. Wherein, the first half shaft and the second half shaft are respectively arranged on two sides of the pump generator unit and the at least one main generator unit which are away from each other; the first half shaft and the second half shaft are provided with a first rotor shaft hole, and the connecting rod passes through the first rotor shaft hole; The first bearing is clamped on the shoulder of the first half-shaft, and the second bearing is clamped on the shoulder of the second half-shaft.

4. The rotary nanogenerator according to any one of claims 1-3, characterized in that, Also includes: Stator gasket, the stator gasket is a circular ring structure, and the stator gasket is respectively arranged on the periphery of the pump generator rotor and the main generator rotor; Wherein, the inner diameter of the stator gasket is larger than the outer diameter of the pump generator rotor, and the inner diameter of the stator gasket is larger than the outer diameter of the main generator rotor; Optionally, the pump generator stator, the main generator stator and the stator gasket are fixed by means of fixing members.

5. The rotary nanogenerator according to claim 2 or 3, characterized in that, Also includes: A rotor gasket, wherein the rotor gasket is provided with a gasket shaft hole for the connecting rod to pass through; Wherein, the rotor gasket is located in the first stator center hole, the outer diameter of the rotor gasket is smaller than the inner diameter of the first stator center hole, and the thickness of the rotor gasket is greater than the thickness of the pump generator stator; or, The rotor gasket is located in the second stator center hole, the outer diameter of the rotor gasket is smaller than the inner diameter of the second stator center hole, and the thickness of the rotor gasket is greater than the thickness of the main generator stator; or, In adjacent pump-generator units and main generator units, the pump-generator rotor is adjacent to the main generator rotor, and the rotor gasket is arranged between the adjacent pump-generator rotor and the main generator rotor.

6. The rotary nanogenerator according to claim 2 or 3, characterized in that, The processing circuit includes: a rectifier bridge, a voltage regulator tube and wires for circuit connection, wherein the wires include: a first wire connected between the AC input end of the rectifier bridge and the pump electrode pair; and a second wire connected between the DC output end of the rectifier bridge and the storage electrode pair; the voltage regulator tube is connected in parallel between the DC output ends of the rectifier bridge; There are multiple second rotor shaft holes and third rotor shaft holes. Except for part of the second rotor shaft holes and part of the third rotor shaft holes penetrated by the connecting rod, the remaining second rotor shaft holes and third rotor shaft holes are used to limit the wires, so that the processing circuit rotates synchronously with the pump generator rotor and the main generator rotor or the processing circuit is fixed between the pump generator stator and the main generator stator.

7. The rotary nanogenerator according to any one of claims 1-3, characterized in that The arrangement order of the pump generator rotor and the pump generator stator in the pump generator unit is consistent with or opposite to the arrangement order of the main generator rotor and the main generator stator in the main generator unit.

8. The rotary nanogenerator according to any one of claims 1-3, characterized in that, Also includes: A first end cover and a second end cover, wherein the first end cover and the second end cover are respectively arranged on two sides of the pump generator unit that are away from the at least one main generator unit.

9. The rotating nanogenerator according to any one of claims 1 to 3, characterized in that: The electrodes in the pump electrode pair, storage electrode pair and output electrode pair are distributed in a fan-shaped or interdigitated shape; and / or, The materials of the electrodes in the pump electrode pair, the storage electrode pair and the output electrode pair include one or more of the following conductive materials: metal material, conductive carbon material or ITO; and / or, The thickness of the electrodes in the pump electrode pair, storage electrode pair and output electrode pair is 50nm~50μm; The triboelectric layer and the dielectric layer are one of the following insulating materials or a composite material thereof: polymer, inorganic oxide; and / or, The thickness of the triboelectric layer and the dielectric layer is 0.5 μm to 50 μm.

10. The rotary nanogenerator according to any one of claims 1-3, characterized in that, Two adjacent main generator units share an adjacent main generator stator / main generator rotor, and electrodes are respectively arranged on both sides of the shared main generator stator / main generator rotor, wherein one side electrode is a storage electrode pair and the other side electrode is an output electrode pair; or, the electrodes on both sides are storage electrode pairs / output electrode pairs.

11. A power supply device, characterized in that, The invention comprises the rotating nanogenerator according to any one of claims 1 to 10.

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