High-efficiency Road-use Composite Power Generation Device and Power Generation Method

Abstract

The present invention discloses a high-efficiency road-use composite power generation device and a power generation method, aiming to solve the technical problems in the prior art, such as single power generation method, low conversion efficiency, small power generation power, low energy utilization rate, and inability to meet the occasions with a relatively large required power generation. The present invention adopts a composite power generation technology, and a float-type electromagnetic coil rotor generator is ingeniously arranged inside a fixed piezoelectric-electromagnetic composite vibration energy harvesting generator; and a plurality of power generation sheets composed of piezoelectric materials are arranged in an array and connected to a circuit. On the one hand, power generation can be achieved by the extrusion of the rotor, and on the other hand, power generation based on vibrations in the environment can be realized, with small volume and high power generation efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of power generation, and particularly relates to a high-efficiency road-use composite power generation device and a power generation method. Background Art

[0002] Since the 21st century, with the rapid growth of the population and the rapid development of social economy, the energy problem has become a shackle restricting the development of human society. As the limited traditional fossil fuels are increasingly exhausted, researchers at home and abroad have turned their attention to various new types of energy. Among them, the road surface pressure power generation technology has gradually become the focus of research by technical personnel in related fields.

[0003] In the existing road surface power generation devices, in order to convert the energy of ground pressure into electric energy, piezoelectric power generation technology, photovoltaic power generation technology, and the cutting magnetic induction line power generation technology with a permanent magnet as the stator, a coil as the rotor, and driven by a gear are mainly used. In the road surface power generation devices applying the above three technologies, the first two products have high manufacturing costs, high power generation costs, and low economic benefits.

[0004] A stator and a generator known to the inventor (Chinese Patent Document CN103401327A) disclose a cutting magnetic induction line power generation technology with a permanent magnet as the stator, a coil as the rotor, and driven by a gear.

[0005] However, in the process of implementing the technical solutions in the embodiments of the present application, the inventors of the present application found that the above technologies have at least the following technical problems: The method of driving the gear by stepping on the gear rack guide rail to realize the rotation of the generator rotor has a small contact area at the gear engagement part, which easily leads to excessive friction between mechanical components. At the same time, with the disappearance of the pressure, the rotor is prone to sudden stops or sudden reverse rotations during rotation. Therefore, although the product cost of this method is low, due to its structural design problems, its service life is not long, the failure rate is high, and the power generation efficiency is low.

[0006] Another new combined structural pedestrian road surface piezoelectric unit using the positive piezoelectric effect known to the inventor (Chinese Patent Document CN111193439A) discloses a technology that uses the vibration generated by people stepping on tempered glass, transmits it to the piezoelectric transducer through a silicone gasket, generates a slight deflection, and achieves the power generation effect.

[0007] However, in the process of implementing the technical solutions in the embodiments of the present application, the inventors of the present application found that the above technologies have at least the following technical problems: The pressure is transmitted through the silicone gasket to generate a slight deflection, and then converted into electricity. The power generation method is single, the energy conversion efficiency is low, the power generation power is small, the energy utilization rate is low, and it cannot meet the occasions where a relatively large power generation power is required.

[0008] The information disclosed in this background art section is only for enhancing the understanding of the background art of the present disclosure, and should not be regarded as an admission or any form of implication that this information constitutes the prior art known to those skilled in the art. Summary of the Invention

[0009] The inventors have found through research that:

[0010] (1) When the existing road-use generator rotor suddenly stops or rotates in the reverse direction during rotation, it will aggravate the wear of mechanical components and easily form fine debris that enters the power transmission part of the device, causing the device to jam.

[0011] (2) The existing power generation methods based on road energy are single, with low energy conversion rate and power generation efficiency, and small power generation power, making it difficult to be effectively utilized.

[0012] In view of at least one of the above technical problems, the present disclosure provides a high-efficiency road-use composite power generation device and a power generation method. By adopting composite power generation technology, a fixed piezoelectric-electromagnetic composite vibration energy harvesting generator and a float-type electromagnetic coil rotor generator are organically integrated to complement each other. The float-type electromagnetic coil rotor generator enables the rotor to rotate in a plane perpendicular to the vertical axis under the action of axial pressure by using a spiral torsion bar and a spiral torsion bar guide rail, and enables the rotor to still rotate in a single direction without sudden stop when the transmission power changes direction through an internal gear cylinder and a one-way ratchet; and by arranging a plurality of power generation sheets composed of piezoelectric materials in an array and connecting them to a circuit, on the one hand, power can be generated by the extrusion of the rotor, and on the other hand, power generation based on vibrations in the environment can be achieved, with small volume and high power generation efficiency.

[0013] According to one aspect of the present disclosure, there is provided a high-efficiency road-use composite power generation device, mainly including an energy harvesting generator, a float-type electromagnetic coil rotor generator having a rotor housing with an empty groove structure, and a magnet located inside the rotor housing. The energy harvesting generator has a cover-type energy harvesting ring with a hole structure, a plurality of energy harvesting rings having the same hole structure as the cover-type energy harvesting ring, power generation sheets sandwiched between the energy harvesting rings through the hole structure, and an energy harvesting coil located on its periphery;

[0014] The float-type electromagnetic coil rotor generator includes a rotor, a coil wound around the periphery of the rotor, a permanent magnet outside the coil, a brush below the rotor, a total power output terminal connected to the coil, and a pressure conversion device corresponding to the rotor; the pressure conversion device includes a pressure receiving component, a rotating component, and a reset component; the pressure receiving component includes a spiral torsion bar, the rotating component includes a one-way ratchet with a spiral torsion bar guide rail inside, and an internal gear cylinder located outside the one-way ratchet and meshing with the one-way ratchet through an internal gear structure; the reset component includes an orientation disk located above the rotor, a spiral torsion bar return spring located outside the spiral torsion bar, and a rotor return spring located below the rotor.

[0015] In some embodiments of the present disclosure, the spiral torsion bar guide inside the one-way ratchet is not completely in contact with the spiral torsion bar to achieve effective conduction of efficiency.

[0016] In some embodiments of the present disclosure, the permanent magnet is an arc-shaped permanent magnet.

[0017] In some embodiments of the present disclosure, the internal gear structure of the internal gear cylinder meshes with the one-way ratchet in a single direction clockwise or counterclockwise.

[0018] In some embodiments of the present disclosure, the high-efficiency road-use combined power generation device further includes a housing disposed on its periphery.

[0019] In some embodiments of the present disclosure, the housing includes a floor tile receiving seat located above the spiral torsion bar, a frustum-shaped elastic rubber cover connected to the floor tile receiving seat, a cylindrical generator housing connected to the frustum-shaped elastic rubber cover, and a generator waterproof base connected to the cylindrical generator housing.

[0020] In some embodiments of the present disclosure, a waterproof rubber ring is provided on the generator waterproof base.

[0021] In some embodiments of the present disclosure, the floor tile receiving seat receives the top corners of six equilateral triangle floor tiles arranged in a circle above it, and floor tile receiving seats are placed below the three top corners of the equilateral triangle floor tiles.

[0022] In some embodiments of the present disclosure, the cap-shaped energy capture ring covers the permanent magnet outside the float-type electromagnetic coil rotor generator.

[0023] In some embodiments of the present disclosure, the hole structure of the cap-shaped energy capture ring is a circular hole with the same diameter arranged in a circle.

[0024] In some embodiments of the present disclosure, the power generation sheet includes a cylindrical magnet mass, a metal sheet connected to the cylindrical magnet mass, and piezoelectric power generation material PZT-SA ceramic sheets brazed on the upper and lower surfaces of the metal sheet, forming a cantilever beam structure.

[0025] According to another aspect of the present disclosure, a road-based power generation method is provided, which is implemented by the high-efficiency road-use combined power generation device disposed below the corresponding road surface, and includes the following steps:

[0026] (1) When the pressure conversion device is not subjected to the pressure of road surface trampling,

[0027] The power generation sheet vibrates due to the vibration in the external environment, and the cantilever beam structure of the power generation sheet undergoes elastic deformation during the vibration, generating internal stress inside the piezoelectric power generation material PZT-SA ceramic sheet, thereby generating charges of opposite polarity, forming current through the loop, and piezoelectric effect;

[0028] The cylindrical magnet mass block vibrates along with the cantilever beam, so that an induced current and an electromagnetic effect are generated inside the energy capture coil;

[0029] The two energy-harvesting power generation methods, piezoelectric effect and electromagnetic effect, are coupled together to convert the vibration energy in the road environment into electrical energy;

[0030] (2) When the pressure conversion device is subjected to pressure from the road,

[0031] The floor tile receiving seat laid in the corresponding road receives the pressure from the ground in real time and transmits it to the spiral twisted bar to make it move downward;

[0032] The spiral twist bar moves downward and slides into the spiral twist bar guide rail inside the one-way ratchet, and the one-way ratchet is driven by the spiral twist bar to rotate clockwise in a plane;

[0033] The ratchet teeth on the outside of the one-way ratchet are meshed with the toothed structure inside the internal gear cylinder, thereby driving the internal gear cylinder and the rotor to rotate together;

[0034] The hollow groove annular structure rotor shell then presses the generator sheet downward, and the generator sheet undergoes a large degree of elastic deformation at the same time, generating piezoelectric effect and electromagnetic effect, and outputting a larger current and voltage;

[0035] (3) After the pressure of the pressure conversion device disappears,

[0036] The spiral twisted bar is quickly lifted under the action of the spiral twisted bar return spring;

[0037] Due to the contact friction between the spiral twisted bar and the spiral twisted bar guide rail inside the one-way ratchet, the one-way ratchet moves upward along with the spiral twisted bar or moves upward a certain distance and then falls again;

[0038] The one-way ratchet is driven by the upward displacement of the spiral twisted bar to rotate counterclockwise in a plane, and there is an engagement angle between the one-way ratchet and the spiral twisted bar, and the tooth structures of the two are slipped and staggered and cannot be engaged;

[0039] The internal tooth structure of the internal gear cylinder forms an upward thrust on the one-way ratchet during the falling process, so that the one-way ratchet rises again for a certain distance and then falls. The one-way ratchet is in a reciprocating state of rising, falling, and rising again, and repeatedly jumps in the internal gear cylinder;

[0040] Under the action of inertia, the rotor keeps rotating clockwise or counterclockwise without being affected by the disappearance of pressure;

[0041] The coil rotates with the rotor, cutting the magnetic flux lines of the permanent magnet, and current is generated in the coil and flows to the main power output terminal;

[0042] During the resetting process of the rotor, the rotor shell of the hollow ring structure rises, and no longer exerts pressure on the power generation sheet. The internal stress formed by the elastic deformation inside the piezoelectric power generation material PZT-SA ceramic sheet is released during this process, causing the power generation sheet to vibrate up and down, generating a piezoelectric effect.

[0043] The generated current is collected at the total power output end through the wire.

[0044] One or more technical solutions provided in the embodiments of the present application have at least any of the following technical effects or advantages:

[0045] 1. The design of the one-way ratchet internal guide rail and the spiral twisted bar is not completely fitted, and the meshing angle between the ratchet teeth and the internal gear structure in the internal gear tube effectively solves the technical problem that when the power transmission and direction of the spiral twisted bar stops or changes, the rotor suddenly stops or suddenly rotates in the opposite direction during rotation, thereby achieving the technical effect that the one-way ratchet repeatedly jumps due to the thrust formed between the friction force and the meshing angle without affecting the rotation state of the internal gear tube and the rotor.

[0046] 2. By using spiral twisted bars and spiral twisted bar guides, the rotor can rotate in a plane perpendicular to the axis under axial pressure, thereby driving the rotor and coil to rotate, cutting the permanent magnet magnetic flux lines to generate electricity, and realizing the power generation device to convert pressure into electrical energy.

[0047] 3. The road surface for paving the power generation device adopts the method of triangular network layout to plan the placement of the power generation device. The floor tile receiving base of a power generation device carries 6 equilateral triangle floor tiles. A floor tile is used to place the power generation device at three vertices to reduce the sense of collapse when the road surface is stepped on, and at the same time maximize the energy brought by the pressure of stepping on it. The coil rotor generator of this power generation device can keep rotating under the action of inertia and will not stop suddenly due to the disappearance of transmission power. When paved on a road section with heavy traffic, the stepping interval of the power generation device is shorter, so that the coil rotor generator is maintained at a high speed state, and the power generation efficiency will be maximized.

[0048] 4. The high-efficiency road-use composite power generation device adopts composite coupling power generation technology. It contains a float-type electromagnetic coil rotor generator, and arranges multiple piezoelectric material power generation sheets in an array and connects to the circuit. On the one hand, it can generate electricity through rotor extrusion, and on the other hand, it can realize vibration power generation based on the environment. It has a small size and high power generation efficiency.

[0049] 5. The piezoelectric - electromagnetic composite vibration energy harvesting technology is adopted. The power generation sheet can generate electricity through piezoelectric effect and electromagnetic induction, and multiple groups of energy harvesting units are connected in series and parallel respectively to increase the overall output current and voltage of the energy harvester. At the same time, the energy harvesting generator can not only generate electricity when the device is stepped on, but also generate electricity based on the vibration in the environment. The energy harvesting generator has different power generation efficiencies in the two power generation states of the device. Combined with the rotor generator, the entire power generation device can obtain higher output power compared with a single - mode piezoelectric power generation device or electromagnetic power generation device. Description of the Drawings

[0050] Figure 1 This is the external view schematic diagram of the high - efficiency road - use composite power generation device in an embodiment of the present application.

[0051] Figure 2 This is the structural schematic diagram of the cap - type energy harvesting ring in an embodiment of the present application.

[0052] Figure 3 This is the bottom view of the cap - type energy harvesting ring in an embodiment of the present application.

[0053] Figure 4 This is the structural schematic diagram of the power generation sheet in an embodiment of the present application.

[0054] Figure 5 This is the structural schematic diagram of the rotor housing in an embodiment of the present application.

[0055] Figure 6 This is the top view of the rotor housing in an embodiment of the present application.

[0056] Figure 7 This is the top view of the high - efficiency road - use composite power generation device in an embodiment of the present application.

[0057] Figure 8 is Figure 7 the sectional view structure schematic diagram of the A - A plane in

[0058] Figure 9 This is the structural schematic diagram of the one - way ratchet in an embodiment of the present application.

[0059] Figure 10 This is the bottom view of the one - way ratchet in an embodiment of the present application.

[0060] Figure 11 This is the structural schematic diagram of the internal gear cylinder in an embodiment of the present application.

[0061] Figure 12 This is the top view of the internal gear cylinder in an embodiment of the present application.

[0062] Figure 13 is Figure 7Schematic cross-sectional structure diagram of plane B-B

[0063] Figure 14 It is the installation position diagram of the high-efficiency road-use composite power generation device in an embodiment of the present application.

[0064] In the above figures, 1. Generator waterproof base; 2. Cylindrical generator housing; 3. Elastic rubber cover; 4. Floor tile receiving seat; 5. Total power output terminal; 6. Waterproof rubber ring; 7. Waterproof directional ring; 8. Spiral torsion bar; 9. Spiral torsion bar return spring; 10. Inner gear cylinder; 11. Inner gear structure; 12. Inner gear cylinder base; 13. Rotor return spring; 14. Plain roller bearing; 15. Lower rotor housing; 16. Upper rotor housing; 17. Rotor; 18. Arc-shaped permanent magnet; 19. Coil frame; 20. Coil; 21. Brush; 22. Triangular floor tile; 23. Pressure conversion device; 24. Compressed component; 25. Rotating component; 26. Reset component; 27. Generator housing; 28. Spiral torsion bar guide rail; 29. One-way ratchet; 30. Magnet; 31. Cap-shaped energy capturing ring; 32. Power generation sheet; 321. Magnet mass block; 322. PZT-SA ceramic sheet; 323. Metal sheet; 33. Power generation sheet cantilever beam structure; 34. Energy capturing ring; 35. Energy capturing coil. Detailed implementation manners

[0065] In the description of the present application, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "vertical", "horizontal", "clockwise", "counterclockwise", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application. The "first", "second", etc. involved in the present application are used to distinguish the described objects and do not have any sequential or technical meanings. The "connection" and "coupling" involved in the present application, unless otherwise specified, both include direct and indirect connections (couplings).

[0066] In the following embodiments, the components, unit modules, structural devices, etc. involved, unless otherwise specified, are all conventional products.

[0067] By providing a high-efficiency road-use composite power generation device in the embodiments of the present application, the problems in the prior art are solved, that is, the friction between mechanical elements is too large. With the disappearance of pressure, the rotor suddenly stops or rotates in the reverse direction during rotation, aggravating the wear of mechanical elements, having a short service life and a high failure rate; the power generation method is single, the conversion efficiency is low, the power generation power is small, the energy utilization rate is low, and it cannot meet the occasions where a relatively large power generation power is required.

[0068] The technical solution in the embodiment of the present application for solving the above-mentioned crosstalk problem has the following general idea:

[0069] Adopt the composite power generation technology. Inside the fixed piezoelectric-electromagnetic composite vibration energy harvesting generator, a float-type electromagnetic coil rotor generator is ingeniously arranged. The float-type electromagnetic coil rotor generator uses a spiral torsion bar and a spiral torsion bar guide rail to enable the rotor to rotate in a plane perpendicular to the vertical axis under the action of axial pressure. The inner gear cylinder and the one-way ratchet are used to enable the rotor to still rotate in one direction without sudden stop when the transmission power changes direction; and by arranging multiple power generation sheets composed of piezoelectric materials in an array and connecting them to the circuit, on the one hand, power can be generated by the rotor extrusion, and on the other hand, vibration power generation based on the environment can be realized, with small volume and high power generation efficiency.

[0070] To better understand the technical solution of the present application, the above technical solution will be described in detail below in conjunction with the accompanying drawings of the specification and specific implementation manners.

[0071] Embodiment 1

[0072] This example discloses a high-efficiency road-use composite power generation device. Refer to Figures 1 to 14 , which mainly includes an energy harvesting generator, a float-type electromagnetic coil rotor generator with a rotor housing having an empty groove structure, and a magnet 30 located inside the rotor housing; the energy harvesting generator includes a cover-type energy harvesting ring 31 with a hole-type structure, a plurality of energy harvesting rings 34 having the same hole-type structure as the cover-type energy harvesting ring 31, power generation sheets 32 arranged alternately through the hole-type structure between the energy harvesting rings 34, an energy harvesting coil 20 located on its periphery, and a total power output terminal 5 connected to the energy harvesting coil 20; the cover-type energy harvesting ring 31 covers the permanent magnet 30 outside the float-type electromagnetic coil rotor generator; the hole-type structure of the cover-type energy harvesting ring 31 is a circular hole with the same diameter arranged in a circumference; the power generation sheet 32 includes a cylindrical magnet mass 321, a metal sheet 323 connected to the cylindrical magnet mass 321, and piezoelectric power generation material PZT-SA ceramic sheets 322 brazed on the upper and lower surfaces of the metal sheet 323, forming a cantilever beam structure.

[0073] The float - type electromagnetic coil rotor generator includes a rotor 17, a coil 20 wound around the periphery of the rotor 17, a permanent magnet 30 outside the coil 20, a brush 21 below the rotor 17, a total power output terminal 5 connected to the coil 20, and a pressure conversion device 23 arranged corresponding to the rotor 17; the pressure conversion device 23 includes a pressure - receiving component 24, a rotating component 25, and a reset component 26; the pressure - receiving component 24 includes a spiral torsion bar 8, the rotating component 25 includes a one - way ratchet 29 with a spiral torsion bar 8 guide rail inside, and an internal gear cylinder 10 located outside the one - way ratchet 29 and meshing with the one - way ratchet 29 through an internal gear structure 11; the spiral torsion bar guide 28 inside the one - way ratchet 29 does not completely fit the spiral torsion bar 8; the internal gear structure 11 of the internal gear cylinder 10 meshes with the one - way ratchet 29 in a single - direction clockwise or counter - clockwise manner; the reset component 26 includes a waterproof directional ring 7 above the rotor 17, a spiral torsion bar return spring 9 outside the spiral torsion bar 8, and a rotor return spring 13 below the rotor 17.

[0074] The high - efficiency road - use compound power generation device further includes a generator housing 27 arranged around it; the generator housing 27 includes a floor tile receiving seat 4 above the spiral torsion bar 8, a frustum - shaped elastic rubber cover 3 connected to the floor tile receiving seat 4, a cylindrical generator outer shell 2 connected to the frustum - shaped elastic rubber cover 3, and a generator waterproof base 1 connected to the cylindrical generator outer shell 2; a waterproof rubber ring 6 is provided on the generator waterproof base 1; the top angles of six equilateral - triangle floor tiles 22 arranged in a circular pattern are received above the floor tile receiving seat 4, and the floor tile receiving seat 4 is placed below the three top angles of each of the equilateral - triangle floor tiles 22.

[0075] Embodiment 2

[0076] This example discloses a high - efficiency road - use compound power generation device, see Figures 1 to 14 and mainly includes: a float - type electromagnetic coil rotor generator (referred to as the rotor generator) and a fixed - type piezoelectric - electromagnetic composite vibration energy harvesting generator (referred to as the energy harvesting generator).

[0077] The rotor generator is located at the central part inside the overall device. The spiral torsion bar 9 above the rotor can undergo axial displacement under the pressure caused by the device being stepped on by pedestrians, etc. The displacement direction and the end point of the displacement of the spiral torsion bar are restricted by the orientation disk and the spiral torsion bar return spring 9. The rotor shaft is an internal gear cylinder 10. There is a one-way ratchet 29 inside the cylinder that meshes with the internal gear structure 11 in the clockwise direction (unidirectional). The one-way ratchet 29 can move up and down inside the cylinder and retains the freedom of planar rotation. The internal structure of the one-way ratchet is a track (spiral torsion bar guide rail 28) that does not fully fit with the spiral torsion bar. Under the action of the pedestrian pressure, the spiral torsion bar 9 moves downward and slides into the spiral torsion bar guide rail 28 inside the one-way ratchet 29. Driven by the spiral torsion bar, the one-way ratchet 29 will rotate clockwise in the plane. When rotating clockwise, the ratchet teeth outside the one-way ratchet 29 mesh with the internal toothed structure of the internal gear cylinder, thereby driving the internal gear cylinder and the rotor to rotate together. When the pressure disappears, under the action of the spiral torsion bar return spring, the spiral torsion bar quickly lifts. During this process, because there is a contact friction force between the spiral torsion bar and the spiral torsion bar guide rail inside the one-way ratchet, the one-way ratchet will also move upward with the spiral torsion bar, and because the meshing angle causes the toothed structures of the two to slip and disengage when rotating counterclockwise and not mesh. Therefore, under the action of inertia, the rotor can still rotate clockwise without being affected by the disappearance of the pressure.

[0078] Specifically, when the spiral torsion bar descends to the end point of displacement, the one-way ratchet stops rotating. At this time, the rotor continues to rotate in the original direction under inertia. Because the spiral torsion bar guide rail inside the one-way ratchet does not fully fit with the spiral torsion bar, the one-way ratchet will move upward a certain distance under the action of the contact friction force between the guide rail and the torsion bar or move upward a certain distance and then fall again (the first case is because the friction force between the guide rail and the torsion bar is relatively large, and the second case is because the friction force is relatively small). When the second case occurs, due to the designed angular difference between the toothed structure of the internal gear cylinder and the toothed structure of the one-way ratchet, the toothed structure inside the rotating internal gear cylinder will form an upward thrust on the falling toothed structure of the one-way ratchet, causing the one-way ratchet to rise a certain distance and then fall again. As long as the rotor is still in the rotating state, the one-way ratchet will always be in the reciprocating state of rising, falling, and rising again. The one-way ratchet repeatedly jumps inside the internal gear cylinder, ensuring that the rotor will not stop suddenly due to the disappearance of the power transmitted by the spiral torsion bar or the change of the power direction.

[0079] The coil is wound in the coil frame inside the rotor housing. The rotor housing is composed of two upper and lower parts. There is an empty groove ring structure outside the upper rotor housing. The brush of the rotor is fixed outside the base of the internal gear cylinder. There is a planar roller bearing below the bottom, and there is a rotor return spring between the bearing and the base of the internal gear cylinder. A circle of arc-shaped permanent magnets is fixed outside the rotor to form the stator structure of the rotor generator. The floor tile support is fixed above the spiral torsion bar, and 6 equilateral triangular floor tiles can be placed at the same time.

[0080] The energy harvesting generator is located outside the coil rotor generator and mainly consists of a cap-shaped energy harvesting ring 31, an energy harvesting ring 34, a piezoelectric-electromagnetic composite vibration energy harvesting unit (hereinafter referred to as the power generation sheet), and an energy harvesting coil 35.

[0081] The cap-shaped energy harvesting ring covers the external stator structure of the rotor generator. A circle of round holes with the same diameter is arranged circumferentially on the ring, and an energy harvesting ring with the same round hole structure is used to clamp the fixed ends of multiple power generation sheets through the round holes, so that the oscillator ends of the power generation sheets can vibrate due to vibrations in the environment. Then, in the same way, the energy harvesting rings are misaligned with each other (the number of misaligned round holes is determined by the density of the arrangement of the power generation sheets) to clamp the same number of them. In this way, multiple layers are clamped again. The power generation sheets in the same layer are connected in parallel, and the energy harvesting rings are connected in series (the series output is X times the voltage, and the parallel output is Y times the current, where X is the number of energy harvesting rings and Y is the number of energy harvesting units) to form a cylindrical structure. The energy harvesting coil is fixed on the periphery of the cylindrical structure. When the oscillator ends of the power generation sheets vibrate, an induced current can be generated in the energy harvesting coil, and at the same time, the elastic deformation that occurs itself can also generate electricity by the piezoelectric material, realizing the conversion of vibration energy in the environment into electrical energy through the piezoelectric effect and the electromagnetic effect. At the same time, the rotor return spring between the plane roller bearing and the base of the internal gear cylinder can make the rotor move downward a certain distance before rotation, and a magnet is placed in the empty groove ring structure of the upper rotor shell. When the rotor moves downward, the ring plays a role in pressure transmission. On the one hand, it squeezes the oscillator of the power generation sheet, so that the power generation sheet generates electricity through the piezoelectric effect and the electromagnetic effect. On the other hand, when the magnet in the ring is displaced, an induced current can also be formed in the energy harvesting coil, realizing the power generation of the energy harvesting generator when the rotor generator is working.

[0082] Among them, the power generation sheet is formed by brazing a piezoelectric power generation material PZT-SA ceramic sheet or other piezoelectric materials on the upper and lower surfaces of the central metal layer to form a cantilever beam structure. At the same time, the oscillator is made of a permanent magnet material. When the permanent magnet follows the vibration of the cantilever beam, an induced current is generated by cutting the energy harvesting coil, and the PZT-SA ceramic sheet generates a current due to the degree of elastic deformation that occurs when the cantilever beam vibrates, thus realizing the coupling of two energy harvesting methods of piezoelectricity and electromagnetism, and the piezoelectric-electromagnetic composite power generation technology.

[0083] Finally, the currents generated by these two parts are collected through wires at the external interface and output. Because the output current is unstable at this time, after filtering the current through a current rectification device outside the device, it can be output to the storage battery to form the collection of electrical energy.

[0084] Embodiment III

[0085] This example discloses a power generation method based on a high-efficiency road-use composite power generation device, including the following steps (see Figures 1 - 14 )

[0086] The road surface for laying the power generation device plans and implements the placement position of the power generation device described in Embodiment 1 or Embodiment 2 using a triangular network layout. The floor tile support base of one power generation device bears 6 equilateral triangular floor tiles, and power generation devices are placed at the three vertices of one floor tile respectively (see Figure 14 )

[0087] When the pressure conversion device 23 is not under pressure such as being stepped on by the road surface,

[0088] The power generation sheet 32 vibrates due to vibrations in the external environment. The cantilever beam structure of the power generation sheet 32 undergoes elastic deformation during vibration, generating internal stress in the piezoelectric power generation material PZT-SA ceramic sheet 322, thereby generating charges with opposite polarities, forming an electric current through the circuit, and the piezoelectric effect;

[0089] The cylindrical magnet mass 321 vibrates along with the cantilever beam, generating an induced current inside the energy harvesting coil 35, and the electromagnetic effect;

[0090] The two energy harvesting power generation methods of the piezoelectric effect and the electromagnetic effect are coupled together to convert the vibration energy in the road environment into electrical energy.

[0091] When the pressure conversion device 23 is under pressure such as being stepped on by the road surface,

[0092] The floor tile support base 4 laid in the corresponding road receives the pressure from the ground in real time and transmits it to the spiral torsion bar 8, causing it to displace downward;

[0093] The spiral torsion bar 8 moves downward and slides into the spiral torsion bar guide 28 inside the one-way ratchet 29. The one-way ratchet 29 is driven by the spiral torsion bar 8 and rotates clockwise in the plane;

[0094] The ratchet teeth outside the one-way ratchet 29 mesh with the toothed structure 11 inside the internal gear cylinder 10, thereby driving the internal gear cylinder 10 and the rotor 17 to rotate together;

[0095] The rotor housing with an empty groove ring structure is caused to squeeze the power generation sheet 32 downward accordingly. At this time, the power generation sheet 32 simultaneously undergoes a large degree of elastic deformation, generating the same piezoelectric effect and electromagnetic effect as above, and outputting a larger current and voltage.

[0096] When the pressure such as stepping on disappears from the pressure conversion device 23,

[0097] Under the action of the spiral torsion bar return spring 9, the spiral torsion bar 8 quickly lifts;

[0098] Due to the contact friction force between the spiral torsion bar 8 and the spiral torsion bar guide 28 inside the one-way ratchet 29, the one-way ratchet 29 moves upward following the spiral torsion bar 8 or moves upward a part of the distance and then falls again;

[0099] The one-way ratchet 29 is driven by the upward displacement of the spiral twisted bar 8 to rotate counterclockwise in the plane. There is an engagement angle between the one-way ratchet 29 and the spiral twisted bar 8, and the tooth structures of the two are slipped and staggered, and cannot be engaged.

[0100] The internal tooth structure of the internal gear cylinder 10 generates an upward thrust on the one-way ratchet 29 during the falling process, so that the one-way ratchet 29 rises again for a certain distance and then falls. The one-way ratchet 29 is in a reciprocating state of rising, falling, and rising again, and repeatedly jumps in the internal gear cylinder 10.

[0101] Under the action of inertia, the rotor 17 keeps rotating clockwise or counterclockwise without being affected by the disappearance of pressure;

[0102] The coil 20 rotates along with the rotor 17 , cutting the magnetic flux lines of the permanent magnet 30 , and current is generated in the coil 20 and flows to the main power output terminal 5 .

[0103] During the resetting process of the rotor 17, the rotor shell of the hollow ring structure rises, and no longer exerts pressure on the power generation sheet 32. The internal stress formed by the elastic deformation inside the piezoelectric power generation material PZT-SA ceramic sheet 322 is released during this process, causing the power generation sheet 32 ​​to vibrate up and down, producing the same piezoelectric effect as above.

[0104] The generated current is collected at the main power output terminal 5 through the wire; further, the current is filtered by the current rectifier device outside the device and then output to the battery to collect electric energy.

[0105] Although some preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0106] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of this application and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. An efficient road-use composite power generation device, including a energy capture generator, which has a cover-type energy capture ring with a hole structure, multiple energy capture rings with the same hole structure as the cover-type energy capture ring, power generation sheets sandwiched between the energy capture rings through the hole structure, and an energy capture coil located on its periphery. Characterized in that, It also includes a float-type electromagnetic coil rotor generator with a rotor shell having an empty groove structure and a magnet located inside the rotor shell; The float-type electromagnetic coil rotor generator includes a rotor, a coil wound around the periphery of the rotor, a permanent magnet outside the coil, a brush under the rotor, and a pressure conversion device corresponding to the rotor; the pressure conversion device includes a pressure-receiving component, a rotating component, and a reset component; the pressure-receiving component includes a spiral torsion bar, the rotating component includes a one-way ratchet with a spiral torsion bar guide inside and an internal gear cylinder located outside the one-way ratchet and meshing with the one-way ratchet through an internal gear structure; the reset component includes an orientation disk above the rotor, a spiral torsion bar reset spring outside the spiral torsion bar, and a rotor reset spring under the rotor; the power generation sheet includes a cylindrical magnet mass block, a metal sheet connected to the cylindrical magnet mass block, and piezoelectric power generation material PZT-SA ceramic sheets provided on the upper and lower surfaces of the metal sheet, forming a cantilever beam structure.

2. The efficient road-use composite power generation device according to claim 1, Characterized in that, The spiral torsion bar guide inside the one-way ratchet does not completely fit the spiral torsion bar.

3. The efficient road-use composite power generation device according to claim 1, Characterized in that, The internal gear structure of the internal gear cylinder meshes with the one-way ratchet in a single direction clockwise or counterclockwise.

4. The efficient road-use composite power generation device according to claim 1, Characterized in that, The float-type electromagnetic coil rotor generator further includes a housing.

5. The efficient road-use composite power generation device according to claim 4, Characterized in that, The housing includes a floor tile receiving seat above the spiral torsion bar, a frustum-shaped elastic rubber cover connected to the floor tile receiving seat, a cylindrical generator housing connected to the frustum-shaped elastic rubber cover, and a generator waterproof base connected to the cylindrical generator housing.

6. The efficient road-use composite power generation device according to claim 5, Characterized in that, A waterproof rubber ring is provided on the generator waterproof base; six equilateral triangle floor tile vertices arranged in a circle are received above the floor tile receiving seat, and floor tile receiving seats are placed below the three vertices of each equilateral triangle floor tile.

7. The efficient road-use composite power generation device according to claim 1, Characterized in that, The cover-type energy capture ring covers the permanent magnet outside the float-type electromagnetic coil rotor generator.

8. The efficient road-use composite power generation device according to claim 1, Characterized in that, The hole structure of the cover-type energy capture ring is a circle of circular holes with the same diameter arranged in a circle.

9. A road-based power generation method, implemented by the efficient road-use composite power generation device according to claim 1 provided under the corresponding road surface, including the following steps: (1)When the pressure conversion device is not subjected to the pressure of being stepped on by the road surface, the power generation sheet vibrates by receiving the vibration in the road environment. The cantilever beam structure of the power generation sheet undergoes elastic deformation during vibration, generating internal stress within the piezoelectric power generation material PZT-SA ceramic sheet, thereby generating charges with opposite polarities, forming an electric current and piezoelectric effect through a circuit; the cylindrical magnet mass vibrates along with the cantilever beam, generating an induced current and electromagnetic effect within the energy harvesting coil; The piezoelectric effect and the electromagnetic effect are coupled to convert the vibration energy in the road environment into electrical energy; (2)When the pressure conversion device is subjected to the pressure of being stepped on by the road surface, the floor tile receiving seat laid in the corresponding road receives the pressure from the road surface in real time and transmits it to the spiral torsion bar, causing it to undergo a downward displacement; the spiral torsion bar moves downward and slides into the spiral torsion bar guide rail inside the one-way ratchet. The one-way ratchet is driven by the spiral torsion bar and rotates clockwise or counterclockwise in a plane; the ratchet teeth on the outside of the one-way ratchet mesh with the internal toothed structure of the internal gear cylinder, thereby driving the internal gear cylinder and the rotor to rotate together; causing the rotor housing with the empty slot structure to squeeze the power generation sheet downward. At this time, the power generation sheet simultaneously undergoes a large degree of elastic deformation, generating piezoelectric effect and electromagnetic effect, and outputting current and voltage; (3)When the pressure such as stepping on disappears from the pressure conversion device, under the action of the spiral torsion bar return spring, the spiral torsion bar quickly rises; due to the contact friction force between the spiral torsion bar and the spiral torsion bar guide rail inside the one-way ratchet, the one-way ratchet moves upward following the spiral torsion bar or moves upward a certain distance and then falls again; the one-way ratchet is driven by the upward displacement of the spiral torsion bar and rotates counterclockwise or clockwise in a plane. There is a meshing angle between the one-way ratchet and the spiral torsion bar, causing the toothed structures of the two to slip and disengage; the internal toothed structure of the internal gear cylinder forms an upward thrust on the one-way ratchet during the falling process, causing the one-way ratchet to rise a certain distance again and then fall. The one-way ratchet is in a reciprocating state of rising, falling, and rising again, and repeatedly bounces inside the internal gear cylinder; under the action of inertia, the rotor keeps rotating clockwise or counterclockwise without being affected by the disappearance of the pressure; the coil rotates following the rotor, cutting the magnetic induction lines of the permanent magnet, and a current is generated in the coil, which is transmitted to the corresponding total power supply output terminal; during the process of the rotor resetting, the rotor housing with the empty slot structure rises, no longer applying pressure to the power generation sheet. The internal stress formed by the elastic deformation inside the piezoelectric power generation material PZT-SA ceramic sheet is released during this process, causing the power generation sheet to vibrate up and down, generating piezoelectric effect; the generated current is collected at the corresponding total power supply output terminal through a wire.

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