Water wheel-shaped friction nano-electromagnetic composite power generation device suitable for multi-frequency wave band of water flow

Abstract

Water flow multi-frequency band suitable for water wheel shape friction nano electromagnetic composite power generation device belongs to the field of friction nano power generation, in order to solve the problem of avoiding the relatively obvious decline of power generation performance caused by the low frequency change of critical water flow of single type liquid-solid friction nano generator, the first rotating power generation device, the first rotating power generation device includes electromagnetic power generation part for rotating drive; The second rotating power generation device, the second rotating power generation device includes friction nano power generation part for rotating drive; Transmission device, the second rotating power generation device transmits mechanical power to the first rotating power generation device through the transmission device, the effect is to improve the power generation performance.

Description

Technical Field

[0001] This invention belongs to the field of triboelectric nano-power generation and relates to a water turbine-shaped triboelectric nano-electromagnetic composite power generation device applicable to multiple frequency bands of water flow. Background Technology

[0002] Water wave energy is one of the world's most abundant green and renewable energy sources. Triboelectric nanogenerators, a popular energy harvesting technology in recent years, utilize the coupling of triboelectric and electrostatic effects to collect mechanical and ionic energy from flowing water. It exhibits excellent power generation performance in low-frequency water flows; specifically, the frequency band below the critical low-frequency water flow is the dominant power generation frequency band for water turbine-shaped triboelectric nanogenerators, reportedly 5Hz. Current research on water turbine-shaped triboelectric nanogenerators for water wave energy harvesting involves separating the blade section from the internal shaft structure. Previous studies used a separate power generation structure for the blade section, i.e., a liquid-solid contact type. Through modification, doping, and surface modification techniques, the power generation performance of the solid-liquid triboelectric nanogenerator is improved.

[0003] The frequency of water flow is typically below the critical low frequency of water flow. Within this range, the liquid-solid triboelectric nanogenerator (LTM) maintains good and stable power generation performance. The water flow frequency below the critical low frequency is the dominant frequency band for LTM. However, when the water flow frequency exceeds the critical low frequency, the power generation performance of the LTM gradually decreases. This gradual decrease in performance is equivalent to a slightly noticeable drop in power generation performance due to a change in the critical water flow frequency. A combination of two different types of power generation devices can be considered to address this fluctuation problem. At water flow frequencies below the critical low frequency, LTM dominates; at water flow frequencies above the critical low frequency, electromagnetic power generation gradually becomes dominant. Therefore, as the water flow frequency increases from the critical low frequency, although the triboelectric power generation performance decreases slightly, the electromagnetic power generation performance gradually increases, resulting in a smaller overall decrease in the device's power generation performance. However, in practice, it has been found that, considering that the water flow is mostly in the frequency band below the critical low frequency range, the triboelectric nanogenerator generates electricity more often than the electromagnetic generator. Therefore, the electromagnetic generator cannot fully utilize its power generation performance most of the time. Summary of the Invention

[0004] In order to simultaneously address the issues of avoiding a relatively significant decrease in power generation performance of single-type liquid-solid triboelectric nanogenerators due to critical changes in water flow frequency, and to ensure that electromagnetic power generation devices can fully utilize their power generation performance in water flow frequency ranges where power generation is not advantageous.

[0005] A water turbine-shaped triboelectric nano-electromagnetic composite power generation device applicable to multiple frequency bands of water flow, according to some embodiments of this application, includes...

[0006] A first rotary power generation device, the first rotary power generation device including an electromagnetic power generation part for rotary drive;

[0007] The second rotational power generation device includes a triboelectric nano-power generation section for rotational drive;

[0008] The transmission device transmits mechanical power to the first rotary power generation device through the transmission device.

[0009] According to some embodiments of this application, a water turbine-shaped triboelectric nano-electromagnetic composite power generation device suitable for multi-frequency band water flow is provided, wherein the first rotating power generation device further includes a triboelectric nano-power generation section for rotational drive.

[0010] According to some embodiments of this application, a water turbine-shaped triboelectric nano-electromagnetic composite power generation device suitable for multi-frequency band water flow is provided, wherein the transmission device includes a first gear, a second gear, and a transmission chain.

[0011] According to some embodiments of this application, a water turbine-shaped triboelectric nano-electromagnetic composite power generation device suitable for multi-frequency band water flow is provided. The first rotating power generation device includes a first fixed shaft, a first bearing, a first water turbine assembly, and a first slip ring, wherein:

[0012] The first bearing is mounted on the first fixed shaft, and the first water turbine device is mounted on the first bearing, so that the first water turbine device can rotate around the first fixed shaft through the first bearing.

[0013] The first water turbine device includes a first outer shaft ring, a first inner shaft ring, a first isolation hollow chamber, a first sealing plate, a first magnet, a first coil, and a first blade;

[0014] The first bearing is disposed in the through-hole of the first inner ring of the shaft, and the first bearing is fixed in the first inner ring of the shaft; the first isolation hollow chamber is connected between the first outer ring of the shaft and the first inner ring of the shaft arranged concentrically, and the space between the first outer ring of the shaft and the first inner ring of the shaft is divided into a plurality of first accommodating spaces by a plurality of the first isolation hollow chambers;

[0015] The first sealing plate is provided on the axial end face between the first outer ring and the first inner ring of the shaft. The first magnet is provided in each hollow sealed first accommodating space. There is a certain distance between the two plates of each first isolation hollow chamber, so that the first magnets in two adjacent first accommodating spaces have at least the distance between the two plates of the first isolation hollow chamber. The first blades are spaced apart on the outer circumferential surface of the first outer ring of the shaft, and the surface of the first blades is provided with triboelectric material.

[0016] The first junction box is fixed on the first fixed shaft and is located on the side of the first end face of the first water turbine device, opposite to the first end face. The first junction box is provided with a plurality of first mounting posts. The first mounting posts correspond one-to-one with the first magnets in the first accommodating space. The first coil is disposed on the first fixed post such that the first coil fixed on the first mounting post corresponds one-to-one with the first magnets in the first accommodating space, so that the first magnet can rotate around the first fixed shaft with the first water turbine device through the first bearing, and rotate relative to the coil that is stationary inside the first junction box on the first fixed shaft.

[0017] The first gear is disposed on the second end face of the first water turbine device, and the first gear is axially connected to the first bottom surface of the first water turbine device on the second end face of the first water turbine device. The first gear has a through central hole and wire holes distributed outside the central hole. The first bearing passes through the central hole of the first gear and does not contact the central hole. The first gear rotates around the first fixed shaft with the first water turbine device.

[0018] The first slip ring includes a first inner ring and a first outer ring. The first inner ring is disposed on the second bottom surface of the first gear along the axial direction and is connected to the second bottom surface of the first gear along the axial direction. A wire from the triboelectric material disposed on the surface of the first blade, extending from the side edge of the second end face, passes through the wire hole of the first gear and is connected to the terminal of the first inner ring. The first inner ring, which connects the wire, rotates with the first gear around the first fixed shaft, allowing the wire to rotate accordingly due to the rotation of the first blade of the first turbine device. The first fixed shaft passes through the central hole of the first outer ring along the axial direction but does not contact the central hole. The first outer ring is fixed to the external substrate. The terminal of the wire connected to the first inner ring is electrically connected to the output wire of the first outer ring.

[0019] The second rotating power generation device includes a second fixed shaft, a second bearing, a second turbine assembly, and a second slip ring, wherein:

[0020] The second bearing is mounted on the second fixed shaft, and the second water turbine is mounted on the second bearing, so that the second water turbine can rotate around the second fixed shaft via the second bearing;

[0021] The second turbine assembly includes a second outer ring of the shaft, a second inner ring of the shaft, and a second blade;

[0022] The second bearing is disposed in the through annular hole of the second inner ring, and the second bearing is fixed in the second inner ring;

[0023] The second blades are spaced apart on the outer circumferential surface of the second shaft outer ring, and the surface of the second blades is provided with triboelectric material;

[0024] The second gear is disposed on the second end face of the second water turbine device, and the second gear is axially connected to the second bottom surface of the second water turbine device. The second gear has a through central hole and a wire hole distributed outside the central hole. The second bearing is disposed in the through central hole of the second gear and the second bearing is fixed in the second gear so that the second gear can rotate around the second fixed shaft with the second water turbine device through the second bearing.

[0025] The second slip ring includes a second inner ring and a second outer ring. The second inner ring is disposed on the second bottom surface of the second gear along the axial direction and is connected to the second bottom surface of the second gear along the axial direction. A wire from the triboelectric material disposed on the surface of the second blade, extending from the side edge of the second end face, passes through the wire hole of the second gear and is connected to the terminal of the second inner ring. The second inner ring, which connects the wire, rotates with the second gear around the second fixed axis, allowing the wire to rotate accordingly due to the rotation of the second blade of the second turbine device. The second fixed axis passes through the central hole of the second outer ring along the axial direction but does not contact the central hole. The second outer ring is fixed to the external substrate. The terminal of the wire connected to the second inner ring is electrically connected to the output wire of the second outer ring.

[0026] The first gear and the second gear are arranged opposite each other in the direction between the two gears. The transmission chain meshes with the first gear and the second gear and transmits power between the first gear and the second gear. The first blade of the first water turbine device is larger than the second blade of the second water turbine device. The diameter of the first gear is larger than the diameter of the second gear.

[0027] According to some embodiments of this application, a water turbine-shaped triboelectric nano-electromagnetic composite power generation device suitable for multi-frequency band water flow is provided, wherein the diameter of the first gear is half the diameter of the second gear, the area of ​​the first blade is half the area of ​​the second blade, or the length of the first blade along the axial direction of the first fixed shaft is half the length of the second blade along the axial direction of the second fixed shaft, and the height of the first blade is less than or equal to the height of the second blade.

[0028] According to some embodiments of this application, a water turbine-shaped triboelectric nano-electromagnetic composite power generation device applicable to multiple frequency bands of water flow is provided, wherein the peripheral surface of the first magnet abuts against the opposing surfaces of the two adjacent first isolated hollow chambers and the inner surface of the outer ring of the first shaft, so that the first magnet rotates with the first water turbine device without moving within the first accommodating space.

[0029] According to some embodiments of this application, a water turbine-shaped triboelectric nano-electromagnetic composite power generation device suitable for multi-frequency band water flow is provided. The triboelectric power generation material is adhered to the surface of the first blade. The triboelectric power generation material includes a first layer of polytetrafluoroethylene film, a first layer of polyimide, an aluminum foil layer, and a second layer of polyimide. The first layer of polyimide is adhered between the first layer of polytetrafluoroethylene film and the aluminum foil layer, and the second layer of polyimide is adhered between the aluminum foil layer and the surface of the first blade. The wire is connected from the aluminum foil layer.

[0030] According to some embodiments of this application, a water turbine-shaped triboelectric nano-electromagnetic composite power generation device suitable for multi-frequency band water flow is provided, wherein the edges of the triboelectric power generation material are sealed with glass glue.

[0031] According to some embodiments of this application, a water turbine-shaped triboelectric nano-electromagnetic composite power generation device suitable for multi-frequency band water flow is provided. The first water turbine device includes four first isolated hollow chambers arranged at 90-degree intervals, and the second rotating power generation device includes four second supports arranged at 90-degree intervals.

[0032] According to some embodiments of this application, a water turbine-shaped triboelectric nano-electromagnetic composite power generation device suitable for multi-frequency band water flow is provided, wherein the output wire of the electromagnetic power generation is output through the first junction box.

[0033] The beneficial effects of the present invention are as follows: The water turbine-shaped triboelectric nano-electromagnetic composite power generation device applicable to multiple frequency bands of water flow of the present invention includes a first rotating power generation device, a second rotating power generation device, and a transmission device. The first rotating power generation device includes an electromagnetic power generation device, and the second rotating power generation device includes a triboelectric nano-power generation device. The second rotating power generation device transmits mechanical power to the second rotating power generation device through the transmission device. The water flow frequency band below the critical low frequency of water flow is the water wave energy frequency band of the triboelectric nano-power generation device of the present invention, and the water flow frequency band above the critical low frequency of water flow is the water wave energy frequency band of the electromagnetic power generation device of the present invention.

[0034] In its first aspect, this invention combines two different types of power generation devices that have advantages in generating electricity in two different water wave frequency bands. This allows the device to have advantages in generating electricity in a wider range of water flow frequency bands, avoiding the problem of the same type of power generation device combination only having advantages in one water wave frequency band. It can solve the problem of a relatively significant decrease in power generation performance caused by critical changes in water flow frequency. This invention enables the device to have advantages in generating electricity in a wider range of frequency bands. Compared with a single device, the composite structure can effectively improve energy harvesting efficiency.

[0035] Secondly, the output voltage and current of the electromagnetic generator are both proportional to the rotor's rotational frequency. Therefore, the output power is proportional to the square of the frequency. This invention considers that most of the time, the water flow is in a frequency band below the critical low frequency of the water flow. In other words, the triboelectric nanogenerator of this invention generates power more often than the electromagnetic generator. Therefore, this invention transmits mechanical power to the second rotating generator through the transmission device, thereby accelerating the rotational speed of the first rotating generator to increase the electromagnetic power generation. Increasing the rotational speed of the second rotating generator is equivalent to increasing the frequency of the nearby water wave energy to a certain extent. Even when the electromagnetic generator is in a disadvantageous water wave energy frequency band, it not only increases the power generation but also makes the water wave energy frequency of the actual water area closer to its dominant power generation frequency. On the other hand, when the electromagnetic generator is in a dominant frequency band, it greatly promotes its power generation and makes the water wave energy frequency of the actual water area even higher, further enhancing its power generation advantage. This simultaneously solves the problems of avoiding a relatively significant decrease in power generation performance caused by critical changes in water flow frequency in a single type of liquid-solid triboelectric nanogenerator and ensuring that the electromagnetic generator can fully utilize its power generation performance in non-dominant water flow frequency bands.

[0036] In the third aspect, the first rotating power generation device in which the electromagnetic power generation of the present invention is located is also combined with the nano-triboelectric power generation of the turbine blades. That is, the first rotating power generation device includes electromagnetic power generation and triboelectric nano-power generation, which can further improve the power generation performance. In addition, the present invention further optimizes the turbine structure by setting up triboelectric nano-power generation on the blades and electromagnetic generator inside the shaft, avoiding the instability of a single power generation device under strong external mechanical impact. Furthermore, the structure itself also has the effect of minimizing the mutual influence between the two power generation technologies.

[0037] Therefore, it is important to emphasize that, compared to combinations of two triboelectric generators in the low-frequency band of water flow or two electromagnetic generators in the high-frequency band of water flow, this invention solves the problem of a relatively significant decrease in power generation performance caused by critical changes in water flow frequency. This allows the invention to have advantageous power generation capabilities across a wider range of water flow frequency bands. Furthermore, compared to simply using combinations of different types of power generation devices without forming the transmission connection structure of this invention, it can more fully utilize power generation performance in water flow frequency bands where electromagnetic generators are not advantageous. It simultaneously solves the problems of avoiding a relatively significant decrease in power generation performance of a single type of liquid-solid triboelectric nanogenerator due to critical changes in water flow frequency, and ensuring that electromagnetic generators can more fully utilize their power generation performance in water flow frequency bands where they are not advantageous. This invention further improves the water turbine structure by combining the electromagnetic generator with a water turbine nano-triboelectric generator, further enhancing power generation performance and reducing the mutual interference of the combined power generation.

[0038] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the structure of the water turbine-shaped triboelectric nano-electromagnetic composite power generation device applicable to multiple frequency bands of water flow in the embodiment.

[0040] Figure 2 This is a schematic diagram of the structure of the water turbine-shaped triboelectric nano-electromagnetic composite power generation device applicable to multiple frequency bands of water flow in the embodiment (outer ring not shown).

[0041] Figure 3 This is a schematic diagram of the interior of the first water turbine device in the embodiment.

[0042] Figure 4 This is a schematic diagram of the first junction box structure in the embodiment.

[0043] Figure 5 This is a schematic diagram of the first water turbine device.

[0044] Figure 6 This is a schematic diagram of the second water turbine device.

[0045] Figure 7 This is a schematic diagram showing the connection between the first gear and the first inner ring.

[0046] Figure 8 This is a schematic diagram showing the connection between the second gear and the second inner ring.

[0047] Figure 9 This is a schematic diagram of a bearing.

[0048] Reference numerals: 100. First rotating power generation device, 110. First fixed shaft, 120. First bearing, 130. First water turbine device, 131. First outer ring of the shaft, 132. First inner ring of the shaft, 133. First isolation hollow chamber, 134. First sealing plate, 135. First magnet, 136. Inner wall of the space, 137. First blade, 138. First accommodating space, 140. First slip ring, 141. First inner ring, 142. First outer ring.

[0049] 200. Second rotating power generation device; 210. Second fixed shaft; 220. Second bearing; 230. Second turbine device; 231. Second outer ring of shaft; 232. Second inner ring of shaft; 233. Second blade; 240. Second slip ring; 241. Second inner ring; 242. Second outer ring.

[0050] 310. First gear, 320. Second gear, 330. Chain.

[0051] 400. First junction box; 410. First mounting post; 411. First coil Detailed Implementation

[0052] The embodiments of this application are described in detail below with reference to the accompanying drawings, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.

[0053] Example 1: As Figure 1 and 2 The illustrated water turbine-shaped triboelectric nano-electromagnetic composite power generation device, applicable to multiple frequency bands of water flow, includes...

[0054] A first rotary power generation device 100 includes an electromagnetic power generation section for rotary drive.

[0055] The second rotational power generation device 200 includes a triboelectric nano-power generation section for rotational drive.

[0056] The transmission device allows the second rotary power generator 200 to transmit mechanical power to the first rotary power generator 100.

[0057] In this scheme, the first rotational power generation device 100 also includes a triboelectric nanogenerator for rotational drive.

[0058] In this configuration, the transmission device includes a first gear 310, a second gear 320, and a transmission chain 330.

[0059] In this configuration, the first rotating power generation device 100 includes a first fixed shaft 110, a first bearing 120, a first turbine 130, and a first slip ring 140, wherein:

[0060] The first bearing 120 is mounted on the first fixed shaft 110, and the first water turbine device 130 is mounted on the first bearing 120, so that the first water turbine device 130 can rotate around the first fixed shaft 110 via the first bearing 120.

[0061] like Figure 3 and 5 As shown, the first water turbine device 130 includes a first outer shaft ring 131, a first inner shaft ring 132, a first isolation hollow chamber 133, a first sealing plate 134, a first magnet 135, a first coil 411, and a first blade 137.

[0062] The first bearing 120 is disposed in the through annular hole of the first inner ring 132, and the first bearing 120 is fixed in the first inner ring 132. The first isolation hollow chamber 133 is connected between the first outer ring 131 and the first inner ring 132, which are arranged concentrically, and the space between the first outer ring 131 and the first inner ring 132 is divided into a plurality of first accommodating spaces 138 by a plurality of the first isolation hollow chambers 133.

[0063] A first sealing plate 134 is disposed on the axial end face between the first outer ring 131 and the first inner ring 132. A first magnet 135 is disposed in each hollow sealed first accommodating space 138. A certain distance is provided between the two compartment plates of each first isolation hollow chamber 133, such that the first magnets 135 in two adjacent first accommodating spaces 138 have a distance at least that between the two compartment plates of the first isolation hollow chamber 133. First blades 137 are spaced apart on the outer peripheral surface of the first outer ring 131, and the surface of the first blades 137 is provided with triboelectric material.

[0064] like Figure 4As shown, the first junction box is fixed on the first fixed shaft 110 and is located on the side of the first end face of the first water turbine device 130, opposite to the first end face. The first junction box is provided with a plurality of first mounting posts. The first mounting posts correspond one-to-one with the first magnets 135 in the first accommodating space 138. The first coil 411 is disposed on the first fixed post such that the first coil 411 fixed on the first mounting post corresponds one-to-one with the first magnets 135 in the first accommodating space 138, so that the first magnets 135 can rotate around the first fixed shaft 110 with the first water turbine device 130 through the first bearing 120, and rotate relative to the coils that are stationary inside the first junction box on the first fixed shaft 110.

[0065] The first gear 310 is disposed on the second end face of the first water turbine device 130, and the first gear 310 is axially connected to the first bottom surface of the first water turbine device 130 on the second end face of the first water turbine device 130. The first gear 310 has a through central hole and wire holes distributed outside the central hole. The first bearing 120 passes through the central hole of the first gear 310 and does not contact the central hole. The first gear 310 rotates with the first water turbine device 130 around the first fixed shaft 110.

[0066] like Figure 7 As shown, the first slip ring 140 includes a first inner ring 141 and a first outer ring 142. The first inner ring 141 is disposed on the second bottom surface of the first gear 310 in the axial direction and is connected to the second bottom surface of the first gear 310 in the axial direction. A wire from the triboelectric material disposed on the surface of the first blade 137 extends out along the side edge of the second end face, passes through the wire hole of the first gear 310, and is connected to the terminal of the first inner ring 141. The first inner ring 141, which connects the wire, rotates with the first gear 310 around the first fixed shaft 110, so that the wire rotates accordingly due to the rotation of the first blade 137 of the first water turbine device 130. The first fixed shaft 110 passes through the central hole of the first outer ring 142 in the axial direction but does not contact the central hole. The first outer ring 142 is fixed to the external substrate. The terminal of the wire connected to the first inner ring 141 is electrically connected to the output wire of the first outer ring 142.

[0067] like Figure 1 , 2 As shown in Figure 4, the second rotating power generation device 200 includes a second fixed shaft 210, a second bearing 220, a second turbine device 230, and a second slip ring 240, wherein:

[0068] The second bearing 220 is mounted on the second fixed shaft 210, and the second water turbine device 230 is mounted on the second bearing 220, so that the second water turbine device 230 can rotate around the second fixed shaft 210 through the second bearing 220.

[0069] The second water turbine device 230 includes a second outer shaft ring 231, a second inner shaft ring 232, and a second blade 233.

[0070] The second bearing 220 is disposed in the through annular hole of the second inner ring 232, and the second bearing 220 is fixed in the second inner ring 232.

[0071] The second blades 233 are spaced apart on the outer circumferential surface of the second shaft outer ring 231, and the surface of the second blades 233 is provided with triboelectric material.

[0072] like Figure 8 As shown, the second gear 320 is disposed on the second end face of the second water turbine device 230, and the second gear 320 is axially connected to the second end face of the second water turbine device 230 on the second bottom surface. The second gear 320 has a through central hole and wire holes distributed outside the central hole. The second bearing 220 is disposed in the through central hole of the second gear 320. The second bearing 220 is fixed in the second gear 320, so that the second gear 320 can rotate around the second fixed shaft 210 with the second water turbine device 230 through the second bearing 220.

[0073] The second slip ring 240 includes a second inner ring 241 and a second outer ring 242. The second inner ring 241 is disposed on the second bottom surface of the second gear 320 in the axial direction and is connected to the second bottom surface of the second gear 320 in the axial direction. A wire from the triboelectric material disposed on the surface of the second blade 233 extends out along the side edge of the second end face, passes through the wire hole of the second gear 320, and is connected to the terminal of the second inner ring 241. The second inner ring 241, which connects the wire, rotates with the second gear 320 around the second fixed shaft 210, so that the wire rotates accordingly due to the rotation of the second blade 233 of the second turbine device 230. The second fixed shaft 210 passes through the central hole of the second outer ring 242 in the axial direction but does not contact the central hole. The second outer ring 242 is fixed to the external substrate. The terminal of the wire connected to the second inner ring 241 is electrically connected to the output wire of the second outer ring 242.

[0074] The first gear 310 and the second gear 320 are arranged opposite each other in the direction between the two gears. The transmission chain 330 meshes with the first gear 310 and the second gear 320 and transmits power between the first gear 310 and the second gear 320. The first blade 137 of the first water turbine device 130 is larger than the second blade 233 of the second water turbine device 230. The diameter of the first gear 310 is larger than the diameter of the second gear 320.

[0075] In this scheme, the diameter of the first gear 310 is half the diameter of the second gear (320), the area of ​​the first blade 137 is half the area of ​​the second blade 233, or the length of the first blade 137 along the axial direction of the first fixed shaft 110 is half the length of the second blade 233 along the axial direction of the second fixed shaft 210, and the height of the first blade 137 is less than or equal to the height of the second blade 233.

[0076] In this scheme, the peripheral surface of the first magnet 135 abuts against the opposing surfaces of the two adjacent first isolated hollow chambers 133 and the inner surface of the first outer ring 131, so that the first magnet 135 rotates with the first water turbine device 130 without moving within the first accommodating space 138.

[0077] In this scheme, the triboelectric material is adhered to the surface of the first blade 137. The triboelectric material includes a first layer of polytetrafluoroethylene film, a first layer of polyimide, an aluminum foil layer, and a second layer of polyimide. The first layer of polyimide is adhered between the first layer of polytetrafluoroethylene film and the aluminum foil layer, and the second layer of polyimide is adhered between the aluminum foil layer and the surface of the first blade 137. The wire is connected from the aluminum foil layer.

[0078] In this scheme, the edges of the triboelectric material are sealed with glass glue.

[0079] In this scheme, the first water turbine device 130 includes four first isolated hollow chambers 133 arranged at 90-degree intervals, and the second rotating power generation device 200 includes four second supports arranged at 90-degree intervals.

[0080] In this configuration, the output wire of the electromagnetic power generation is output through the first junction box.

[0081] The output voltage of a triboelectric nanogenerator is a constant, depending on the dielectric properties of the material surface, and its output current is proportional to the frequency; therefore, its output power is also proportional to the frequency. The output voltage and current of an electromagnetic generator are both proportional to the rotor's rotational frequency; therefore, its output power is proportional to the square of the frequency.

[0082] The water turbine-shaped triboelectric nano-electromagnetic composite power generation device applicable to multiple frequency bands of water flow of the present invention includes a first rotating power generation device, a second rotating power generation device, and a transmission device. The first rotating power generation device includes an electromagnetic power generation device, and the second rotating power generation device includes a triboelectric nano-power generation device. The second rotating power generation device transmits mechanical power to the second rotating power generation device through the transmission device. The water flow frequency band below the critical low frequency of water flow is the water wave energy frequency band of the triboelectric nano-power generation device of the present invention, and the water flow frequency band above the critical low frequency of water flow is the water wave energy frequency band of the electromagnetic power generation device of the present invention.

[0083] In its first aspect, this invention combines two different types of power generation devices that have advantages in generating electricity in two different water wave frequency bands. This allows the device to have advantages in generating electricity in a wider range of water flow frequency bands, avoiding the problem of the same type of power generation device combination only having advantages in one water wave frequency band. This solves the problem of a relatively significant decrease in power generation performance caused by critical changes in water flow frequency, enabling the invention to have advantages in generating electricity in a wider range of frequency bands.

[0084] Secondly, the output voltage and current of the electromagnetic generator are both proportional to the rotor's rotational frequency. Therefore, the output power is proportional to the square of the frequency. This invention considers that most of the time, the water flow is in a frequency band below the critical low frequency of the water flow. In other words, the triboelectric nanogenerator of this invention generates power more often than the electromagnetic generator. Therefore, this invention transmits mechanical power to the second rotating generator through the transmission device, thereby accelerating the rotational speed of the first rotating generator to increase the electromagnetic power generation. Increasing the rotational speed of the second rotating generator is equivalent to increasing the frequency of the nearby water wave energy to a certain extent. Even when the electromagnetic generator is in a disadvantageous water wave energy frequency band, it not only increases the power generation but also makes the water wave energy frequency of the actual water area closer to its dominant power generation frequency. On the other hand, when the electromagnetic generator is in a dominant frequency band, it greatly promotes its power generation and makes the water wave energy frequency of the actual water area even higher, further enhancing its power generation advantage. This simultaneously solves the problems of avoiding a relatively significant decrease in power generation performance caused by critical changes in water flow frequency in a single type of liquid-solid triboelectric nanogenerator and ensuring that the electromagnetic generator can fully utilize its power generation performance in non-dominant water flow frequency bands.

[0085] In the third aspect, the first rotating power generation device in which the electromagnetic power generation of the present invention is located is also combined with the nano-triboelectric power generation of the turbine blades. That is, the first rotating power generation device includes electromagnetic power generation and triboelectric nano-power generation, which can further improve the power generation performance. In addition, the present invention further optimizes the turbine structure by setting up triboelectric nano-power generation on the blades and electromagnetic generator inside the shaft, avoiding the instability of a single power generation device under strong external mechanical impact. Furthermore, the structure itself also has the effect of minimizing the mutual influence between the two power generation technologies.

[0086] Therefore, it is important to emphasize that, compared to combinations of two triboelectric generators in the low-frequency band of water flow or two electromagnetic generators in the high-frequency band of water flow, this invention solves the problem of a relatively significant decrease in power generation performance caused by critical changes in water flow frequency. This allows the invention to have advantageous power generation devices across a wider range of water flow frequency bands, promoting power generation stability. Furthermore, compared to simply using combinations of different types of power generation devices without forming the transmission connection structure of this invention, this invention can more fully utilize power generation performance in water flow frequency bands where electromagnetic generators are not advantageous. It simultaneously solves the problems of avoiding a relatively significant decrease in power generation performance of a single type of liquid-solid triboelectric nanogenerator due to critical changes in water flow frequency, and ensuring that electromagnetic generators can more fully utilize their power generation performance in water flow frequency bands where they are not advantageous. This invention further improves the water turbine structure by combining the electromagnetic generator with a water turbine nano-triboelectric generator, further enhancing power generation performance and reducing the mutual interference of the combined power generation.

[0087] Example 2: Water wave energy is an inexhaustible and abundant renewable green energy source. Effective development and utilization can greatly alleviate the energy crisis and reduce environmental degradation. However, water wave energy in the environment has low-frequency characteristics, and most of the energy contained in water bodies is distributed on the surface. This limits the effectiveness of traditional electromagnetic induction generators in recovering this energy. To collect this type of energy, a triboelectric nanogenerator structure suitable for low-frequency bands needs to be designed. A water turbine-shaped structure perfectly meets this requirement. Excited by the mechanical energy of the water flow, this structure can maintain a stable working state for a long time, while simultaneously satisfying the aforementioned requirement for collecting energy from the water surface. A single-electrode triboelectric nanogenerator is built on the water turbine blades, and an electromagnetic generator is formed by an internal magnet and an external coil on the water turbine shaft. The auxiliary generator is connected to the power-generating water turbine via a chain 330. This composite power generation device can achieve superior power output.

[0088] Besides the size of the separation distance, the dielectric constant and surface charge density of the material itself are also crucial factors affecting the potential, because the ability of a material to gain or lose electrons depends on its polarity. Polytetrafluoroethylene (PTFE) has good hydrophobicity, strong polarity, and high surface charge density; therefore, this invention selects PTFE as the friction layer material.

[0089] The main structure of the water-wheel-shaped triboelectric nano-electromagnetic composite power generation device designed in this invention is a structure designed to rotate with the impact of water waves, including a fixed shaft made of stainless steel rod, a junction box, a coil, a bearing, a PTFE film, a polyimide conductive tape, a wire, a magnet, an isolation frame, a power generation water wheel, a chain 330, and an auxiliary water wheel.

[0090] For the first rotating power generation device 100 of the electromagnetic generator-triboelectric nanogenerator composite, the water turbine is supported by a fixed shaft made of stainless steel rod. As the mechanical energy in the water flow does work, it drives the blades of the water turbine to rotate. The triboelectric nanogenerator has a hydrophobic material adhered to the blades of the water turbine. The electromagnetic generator consists of a coil inside an external fixed junction box and a magnet installed inside the hollow interior of the water turbine; it also generates electricity electromagnetically during rotation.

[0091] The hydrophobic material is attached to the turbine blades and consists of several layers. The top layer is a PTFE film. Polyimide is used as a conductive adhesive to bond the PTFE film and aluminum foil together. Polyimide is also used as a conductive adhesive to bond the aluminum foil together. Wires are led out from the aluminum foil. The dimensions of the above materials are consistent with the dimensions of the blades. After the materials are attached, the edges are sealed with glass glue.

[0092] The electromagnetic power generation section mainly consists of two parts: magnets and coils. The magnets are sealed inside the water turbine device, and there are four sets in total. Each set of magnets is separated by a 3D-printed insulating material with hollow gaps to ensure that each set of magnets has a certain relative space. The coils are connected to a fixed shaft through a junction box and do not rotate with the water turbine device. There are four corresponding magnet placement stakes inside the coils for fixing them in place.

[0093] Acrylic blades that are too thin will deform under water flow impact, while those that are too thick will increase the structural weight. After testing, a thickness of 5 mm was selected. PTFE blades that are too thick will reduce the induced charge on the attached electrodes, thus reducing power generation performance. PTFE blades that are too thin will be easily damaged, affecting the durability of the device. After testing, a 0.05 mm PTFE film was selected.

[0094] Both triboelectric nanogenerators and electromagnetic generators require external circuitry. The triboelectric nanogenerator operates on a single-electrode model, which is more advantageous for harvesting the mechanical energy of water within this structure. Furthermore, six blades form six triboelectric nanogenerators, and an external energy storage circuit can then be used to collect the energy. The electromagnetic generator consists of four magnets and two junction boxes located on the left and right sides of the main turbine body. Each junction box contains four coils; as the coils rotate, the magnetic flux continuously changes, generating current, which is then led out through wires and slip rings.

[0095] The second rotary power generation device 200, which only has a triboelectric nanogenerator, is connected to the water turbine device of the first rotary power generation device 100 by a combination of gears and chains 330. It is characterized by large blades, light weight, and deeper draft, which can better collect mechanical energy from the surface of the water. Then, through the speed-changing gear structure, the energy is transferred to the first rotary power generation device 100, thereby increasing the rotational speed of the first rotary power generation device 100.

[0096] The above-described solution provides a water-wheel-shaped triboelectric nano-electromagnetic composite power generation device that combines triboelectric nano- and electromagnetic power generation technologies, solving the problem of low efficiency of a single generator when the amplitude of water wave fluctuations is unstable. Simultaneously, the structure of the water-wheel-shaped electromagnetic generator is optimized, separating the magnet inside the power-generating water turbine shaft from the externally fixed coil, thus avoiding the problem of susceptibility to interference during movement in confined spaces within the shaft.

[0097] According to the above scheme, compared with a separate power generation device in this structure, the water turbine-shaped composite power generation device of the present invention, taking a triboelectric nanogenerator as an example, has a very low impact on power generation performance due to the increased weight of the added electromagnetic power generation structure. The energy collected by the composite device in the same time period is far higher than that of a separate power generation device, resulting in higher charge output. The auxiliary water turbine structure has larger blades, which can increase the collection of mechanical energy in the water waves. The auxiliary and power generation water turbines are vertically connected on the same side by two gears (large and small) in the same plane, increasing the rotational speed of the power generation water turbine and thus improving power generation efficiency.

[0098] According to the above scheme, the two water turbine structures of the present invention collect energy from water waves. The auxiliary water turbine structure can better collect mechanical energy from the water waves, and the energy is transferred to the power-generating water turbine through a linkage device, accelerating the rotation of the power-generating water turbine. The power-generating water turbine utilizes both triboelectric nanotechnology and electromagnetic generator technologies to collect renewable energy from water waves in the environment.

[0099] According to the above-described apparatus, the preparation process of the triboelectric nanogenerator of the first rotary power generation device 100 of the present invention is as follows:

[0100] 1. Wipe the prepared acrylic blades clean in advance, and stick polyimide conductive tape on the blades, making sure it is flat.

[0101] 2. Apply conductive aluminum foil to the acrylic plate that was taped in step 1, and extend a wire from the back of the aluminum foil to connect to the external energy storage circuit.

[0102] 3. Attach the cut PTFE film to the polyimide conductive adhesive at the bottom and connect it to the aluminum foil. The film should be attached smoothly without any air bubbles. Seal the edges with transparent glass glue to prevent water ingress. Once the glass glue has completely cured, the single-electrode triboelectric nanogenerator device is ready.

[0103] 4 Figure 3 This is a structural diagram of a water turbine-shaped triboelectric nanogenerator, including a friction layer, an electrode layer, and a support structure. The friction layer is made of PTFE film, the electrode layer is made of conductive aluminum foil, and the support structure is a 0.5 cm thick acrylic material. After the above-described triboelectric nanogenerator is fabricated and packaged, it is connected to a 6514 electrometer, with one end connected to the triboelectric nanogenerator and the other end grounded, to test its open-circuit voltage and short-circuit current.

[0104] According to the above-described apparatus, the electromagnetic generator device of the first rotary power generation device 100 of the present invention is manufactured as follows:

[0105] 1. The coil is connected and fixed to the stainless steel rod and remains stationary when the water wheel rotates. Inside the coil are four cylinders that hold the coil, with an angle of 90 degrees between them. Their positions correspond one-to-one with the positions of the internal magnets.

[0106] 2. Among them, such as Figure 1 The supporting bearing shown serves to isolate the water turbine body from the rod. The inner shaft of the bearing is connected to the stainless steel rod, and the outer shaft is connected to the water turbine body. Therefore, there is no contact between the water turbine body and the rod when the water turbine rotates, which reduces friction during water turbine rotation.

[0107] 3. After placing the four sets of coils, connect the wires to the external energy storage circuit, and then package the electromagnetic generator device that has been prepared.

[0108] According to the above-described device, the water turbine structure construction process of the second rotary power generation device 200 of the present invention is as follows:

[0109] 1. The auxiliary turbine is connected to the stainless steel rod. The stainless steel rods in the generator and the auxiliary turbine are on the same horizontal plane, and the distance between them is ensured so as not to affect the normal rotation of the generator and the auxiliary turbine.

[0110] 2. Both the generator turbine and the auxiliary turbine have fixed gear structures on the same side. The diameter ratio of the two gears is 1:2, and the blade width ratio is 1:2. The gears are connected by a chain 330. Because the generator turbine has a larger self-weight and a lower relative rotational speed than the auxiliary turbine, connecting the two can increase the rotational speed of the generator turbine.

[0111] There are two energy harvesting technologies in hydroelectric turbine structures. The first is the single-electrode triboelectric nanogenerator. Its principle is that only one electrode needs to be connected to a charged surface of the nanogenerator, while the other electrode serves as a reference electrode (grounded). In the turbine structure, when the friction material on the blades comes into contact with the water, the surface charge density changes during contact and separation. To balance the potential difference, the charge moves along the conductor, thus generating current. The second technology is the electromagnetic generator. Inside the turbine structure, a magnet, and externally, a coil, act as the rotor and stator, respectively. Excited by the water flow, the turbine rotates, and the rotating electromagnetic generator provides alternating current through the periodic changes in magnetic flux in the coil, thereby harvesting electromagnetic energy.

[0112] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0113] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0114] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0115] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0116] In this invention, the term "and / or" describes the relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following associated objects are in an "or" relationship. "At least one" refers to one or more; "at least one of A and B," similar to "A and / or B," describes the relationship between associated objects, indicating that three relationships can exist. For example, at least one of A and B can represent: A alone, A and B simultaneously, or B alone.

[0117] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0118] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A water wheel shaped friction nano-electromagnetic composite power generation device suitable for water flow multi-frequency bands, characterized in that, Comprising The first rotating power generation device comprises an electromagnetic power generation part for rotating drive; The second rotating power generation device comprises a frictional nano power generation part for rotating drive; The transmission device is used for transmitting mechanical power from the second rotating power generation device to the first rotating power generation device; The first rotating power generation device further comprises a frictional nano power generation part for rotating drive; The first rotating power generation device comprises a first fixed shaft, a first bearing, and a first water wheel device, wherein: The first bearing is arranged on the first fixed shaft, and the first water wheel device is arranged on the first bearing, so that the first water wheel device can rotate around the first fixed shaft through the first bearing; The first water wheel device comprises a first outer ring, a first inner ring, a first isolation hollow warehouse, a first sealing plate, a first magnet, a first coil, and a first blade; The first bearing is arranged in the through hole of the first inner ring, and the first bearing is fixed in the first inner ring; the first isolation hollow warehouse is connected between the concentrically arranged first outer ring and the first inner ring, and the space between the first outer ring and the first inner ring is divided into a plurality of first accommodation spaces by a plurality of first isolation hollow warehouses; The first sealing plate is arranged on the axial end face between the first outer ring and the first inner ring, the first magnet is arranged in each hollow sealed first accommodation space, and the first isolation hollow warehouse has a certain distance between the two warehouse plates, so that the first magnets in the adjacent two first accommodation spaces have at least the distance between the two warehouse plates; the first blades are arranged at intervals on the outer circumferential surface of the first outer ring, and the surface of the first blade is provided with a frictional power generation material; The first coil is fixed on the first fixed shaft and arranged on the side of the first end face of the first water wheel device, opposite to the first end face, a plurality of first mounting columns are arranged in the first coil, the first mounting columns correspond one by one to the first magnets in the first accommodation spaces, and the first coil is arranged on the first mounting column, so that the first coil fixed on the first mounting column corresponds one by one to the first magnets in the first accommodation spaces, so that the first magnets can rotate with the first water wheel device around the first fixed shaft through the first bearing, and rotate relative to the coil fixed in the first coil of the first fixed shaft; The transmission device comprises a first gear, the first gear is arranged on the second end face of the first water wheel device, and the first gear is connected to the second end face of the first water wheel device in the axial direction of the first bottom surface, a through center hole and a threading hole distributed outside the center hole are arranged in the axial direction of the first gear, the first bearing passes through the center hole of the first gear and does not contact the center hole, and the first gear rotates with the first water wheel device around the first fixed shaft; The first rotary power generation device also includes a first slip ring, which includes a first inner ring and a first outer ring. The first inner ring is disposed on the second bottom surface of the first gear along the axial direction and is connected to the second bottom surface of the first gear along the axial direction. A wire extending from the second end face side of the triboelectric material disposed on the surface of the first blade passes through the wire hole of the first gear and is connected to the terminal of the first inner ring. The first inner ring, which connects the wire, rotates with the first gear around the first fixed shaft, so that the wire rotates accordingly due to the rotation of the first blade of the first turbine device. The first fixed shaft passes through the central hole of the first outer ring along the axial direction but does not contact the central hole. The first outer ring is fixed to the external substrate. The terminal of the wire connected to the first inner ring is electrically connected to the output wire of the first outer ring.

2. The water flow multi-frequency band applicable hydro-turbine shaped friction nano-electromagnetic composite power generation device according to claim 1, characterized in that, The second rotary power generation device includes a second fixed shaft, a second bearing, and a second turbine, wherein: The second bearing is mounted on the second fixed shaft, and the second turbine device is mounted on the second bearing, so that the second turbine device can rotate around the second fixed shaft through the second bearing; The second turbine assembly includes a second outer ring of the shaft, a second inner ring of the shaft, and a second blade; A second bearing is installed in the through-hole of the inner ring of the second shaft, and the second bearing is fixed in the inner ring of the second shaft. The second blades are spaced apart on the outer circumferential surface of the second shaft outer ring, and the surface of the second blades is provided with triboelectric material.

3. The water flow multi-frequency band applicable hydro-turbine shaped friction nano-electromagnetic composite power generation device according to claim 2, characterized in that, The transmission device also includes a second gear, which is disposed on the second end face of the second turbine device and is axially connected to the second end face of the second turbine device on the second bottom surface. The second gear has a through central hole and wire holes distributed outside the central hole. A second bearing is disposed in the through central hole of the second gear and the second bearing is fixed in the second gear so that the second gear can rotate around the second fixed shaft with the second turbine device through the second bearing.

4. The water flow multi-frequency band applicable hydro-turbine shaped friction nano-electromagnetic composite power generation device according to claim 3, characterized in that, The transmission device also includes a transmission chain; The first gear and the second gear are arranged opposite each other in the direction between the two gears. The transmission chain meshes with the first gear and the second gear and transmits power between the first gear and the second gear. The first blade of the first water turbine is larger than the second blade of the second water turbine, and the diameter of the first gear is larger than the diameter of the second gear.

5. The water flow multi-frequency band applicable hydro-turbine shaped friction nano-electromagnetic composite power generation device according to claim 3, characterized in that, The second rotary power generation device also includes a second slip ring, which includes a second inner ring and a second outer ring. The second inner ring is disposed on the second bottom surface along the axial direction of the second gear and is connected to the second bottom surface along the axial direction of the second gear. A wire extending from the second end face side of the triboelectric material disposed on the surface of the second blade passes through the wire hole of the second gear and is connected to the terminal of the second inner ring. The second inner ring, which connects the wire, rotates with the second gear around the second fixed shaft, so that the wire rotates accordingly due to the rotation of the second blade of the second turbine device. The second fixed shaft passes through the central hole in the axial direction of the second outer ring but does not contact the central hole. The second outer ring is fixed to the external substrate. The terminal of the wire connected to the second inner ring is electrically connected to the output wire of the second outer ring.

6. The water flow multi-frequency band applicable hydro-turbine shaped friction nano-electromagnetic composite power generation device according to claim 4, characterized in that, The diameter of the first gear is half the diameter of the second gear, the area of ​​the first blade is half the area of ​​the second blade, or the length of the first blade along the axial direction of the first fixed shaft is half the length of the second blade along the axial direction of the second fixed shaft, and the height of the first blade is less than or equal to the height of the second blade.

7. The water flow multi-frequency band applicable hydro-turbine shaped friction nano-electromagnetic composite power generation device according to claim 1, characterized in that, The circumferential surface of the first magnet abuts against the opposing surfaces of the two adjacent first isolated hollow chambers and the inner surface of the outer ring of the first shaft, so that the first magnet does not move around in the first accommodating space as the first water turbine rotates.

8. The water flow multi-frequency band applicable hydro-turbine shaped friction nano-electromagnetic composite power generation device according to claim 1, characterized in that, The triboelectric material is adhered to the surface of the first blade. The triboelectric material includes a first layer of polytetrafluoroethylene film, a first layer of polyimide, an aluminum foil layer, and a second layer of polyimide. The first layer of polyimide is adhered between the first layer of polytetrafluoroethylene film and the aluminum foil layer, and the second layer of polyimide is adhered between the aluminum foil layer and the surface of the first blade. The wires are connected from the aluminum foil layer.

9. The water flow multi-frequency band applicable hydro-turbine shaped friction nano-electromagnetic composite power generation device according to claim 8, characterized in that, The edges of the triboelectric material are sealed with silicone sealant.

10. The water flow multi-frequency band applicable hydro-turbine shaped friction nano-electromagnetic composite power generation device according to claim 1, characterized in that, The first water turbine device includes four first isolated hollow chambers arranged at 90-degree intervals, and the second rotating power generation device includes four second supports arranged at 90-degree intervals.

11. The water flow multi-frequency band applicable hydro-turbine shaped friction nano-electromagnetic composite power generation device according to claim 1, characterized in that, The output wire of the electromagnetic generator is output through the first junction box.

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