Paving stone for collecting motion energy of object

Abstract

The utility model discloses a paving stone for collecting motion energy of an object, which relates to the technical field of energy collection, realizes high-efficiency energy conversion by combining piezoelectric effect with electromagnetic induction, and comprises a stone plate, a balance rod, a piezoelectric component, a base, a bracket, a rotating shaft, a permanent magnet, an inner coil group, an outer coil group, a connecting buckle and the like. The stone plate is pressed to enable the balance rod to generate elastic deformation, and then the embedded piezoelectric assembly and the piezoelectric stack in the support are driven to convert mechanical energy into electric energy. Meanwhile, local stress causes the permanent magnet to rotate around the rotating shaft, electromagnetic induction is achieved through magnetic flux change by means of the optimized structure of the inner coil set and the outer coil set, the paving stones are in linkage through the connecting buckles, smooth system reset and continuous energy collection are guaranteed, and the system is compact in structure, high in conversion efficiency, high in stability and suitable for various occasions such as walkways and roadways.

Description

Technical Field

[0001] This utility model relates to the field of energy harvesting technology, specifically a paving stone for harvesting the energy of moving objects. Background Technology

[0002] In the prior art, various solutions have been proposed to achieve energy harvesting from road surfaces. Chinese invention patent CN112072957B discloses a micro-deformation piezoelectric energy harvesting device for road surfaces. It utilizes piezoelectric modules set inside elastic rubber blocks and applies pressure to the cantilever beam piezoelectric modules and stacked piezoelectric modules through pressure plates to generate voltage. Although this design can convert mechanical energy into electrical energy relatively effectively, its reliance on a single piezoelectric conversion method limits the energy conversion efficiency due to the complexity of the force-bearing parts and structure.

[0003] Chinese invention patent CN105350422B discloses a rigid pavement structure with energy harvesting function. It achieves energy harvesting from traffic loads by setting a triboelectric power generation device and an interlayer triboelectric power generation device between cement concrete slab layers. The structure design is simple and the construction is convenient. However, due to the limitations of triboelectric power generation technology, its harvesting efficiency and stability are difficult to meet high energy demands. In addition, some existing solutions (such as designs that combine photovoltaic and piezoelectric power generation) also have the problems of strong environmental dependence and being limited by light or stress conditions.

[0004] Although the above designs have achieved the conversion of some mechanical energy into electrical energy through their respective energy conversion mechanisms, they still have limitations such as a single energy harvesting method, low conversion efficiency, slow system response, and poor environmental adaptability. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and propose a paving stone for harvesting the energy of moving objects, so as to solve the above-mentioned problems.

[0006] The purpose of this utility model is achieved through the following technical solution: a paving stone for harvesting the kinetic energy of an object, comprising multiple paving stones connected in sequence, each paving stone including a stone slab, a balance bar fixedly connected to the bottom end of the stone slab, and piezoelectric group one and piezoelectric group two fixedly connected to both ends of the balance bar near its bottom end, respectively. A base is provided under the piezoelectric group one and piezoelectric group two, and a symmetrically arranged bracket is fixedly connected to the top of the base. A rotating shaft is fixedly connected to the bracket, and the rotating shaft is rotatably connected to the balance bar. A piezoelectric group three is embedded inside the balance bar. Permanent magnets are fixedly connected to both ends of the balance bar along the axis of rotation. An inner coil group is fixedly connected to the support at the outer end of the shaft between the balance bar and the support. An outer coil group is located on the side of the permanent magnet away from the inner coil group. The outer coil group is fixedly connected to the support. A storage battery is fixedly connected to the base. A connecting buckle is provided between the balance bars on two adjacent paving stones. Piezoelectric group one, piezoelectric group two, piezoelectric group three, inner coil group and outer coil group are all electrically connected to the storage battery through wires. The storage batteries on multiple paving stones are electrically connected to the external system through wires.

[0007] The permanent magnet includes permanent magnet one and permanent magnet two symmetrically arranged along the length of the balance bar. The line connecting the two poles of permanent magnet one and permanent magnet two is parallel to the length of the balance bar.

[0008] Both ends of the balance bar have corresponding slots for the connecting buckles. The inner wall of the slot is slidably connected to the outer end of the connecting buckle, and the connecting buckle can slide along the length of the balance bar within the slot.

[0009] Piezoelectric group one, piezoelectric group two, and piezoelectric group three are all made of piezoelectric material. Each of piezoelectric group one, piezoelectric group two, and piezoelectric group three includes multiple piezoelectric sheets, which form a piezoelectric stack. The multiple piezoelectric sheets on piezoelectric group three are evenly distributed in the balance bar along the line connecting the stone slab and the base. The strain direction of the multiple piezoelectric sheets on piezoelectric group one, piezoelectric group two, and piezoelectric group three is parallel to the line connecting the stone slab and the base.

[0010] The balance bar is made of elastic material. Piezoelectric group one, piezoelectric group two and piezoelectric group three are all electrically connected to the external control system through wires, and the two adjacent bases are fixedly connected to each other.

[0011] The outer end of the inner coil group near the permanent magnet has an arc-shaped structure. The end of the permanent magnet near the inner coil group is matched with the outer end of the inner coil group. The end of the permanent magnet away from the inner coil group also has an arc-shaped structure. The outer coil group is matched with the outer end of the permanent magnet.

[0012] The ends of two adjacent stone slabs that are close to each other are rounded, and the ends of two adjacent balance bars that are close to each other are also rounded.

[0013] The support is made of multiple piezoelectric stacks of piezoelectric materials, and the strain direction of the piezoelectric stacks is parallel to the line connecting the stone slab and the base. The support is electrically connected to the battery on the base via wires.

[0014] The distance between the bottom of piezoelectric unit one and piezoelectric unit two and the top of the base is 2-3 mm.

[0015] The beneficial effects of this utility model are:

[0016] 1. The structure employs a balance bar installed at the bottom of the stone slab. The piezoelectric components embedded in the balance bar and the piezoelectric stacks on the support are designed to allow the balance bar to bend and be compressed locally due to elastic deformation when external pressure is applied. This enables each piezoelectric component to work in the most favorable strain direction, thereby rapidly converting mechanical energy into electrical energy. At the same time, the carefully designed piezoelectric sheet stack structure can capture minute mechanical vibrations, improving the overall energy conversion efficiency.

[0017] 2. In addition to harvesting energy by relying on the piezoelectric effect, this application also realizes electromagnetic induction energy conversion by using symmetrically arranged permanent magnets and inner and outer coil groups designed in coordination. When the stone slab and the overall structure are rotated due to local force, the continuous rotation of the permanent magnet causes the magnetic flux in the coil group to change uniformly and continuously, generating an induced electromotive force. This dual energy harvesting method can make full use of the energy generated by the motion, whether in the state dominated by piezoelectric conversion or in the state where electromagnetic induction is active.

[0018] 3. The design of the paving stones fully considers the linkage and reset issues between various parts. The balance bar achieves linkage through the connecting buckle set between adjacent paving stones, which can quickly return to its original state after the external force is removed without the need for an additional reset device, thereby reducing energy loss and ensuring the continuous and stable operation of the system. The application of the chute structure further reduces the frictional resistance between components, improves the smoothness of the overall movement and the durability of the structure.

[0019] 4. The permanent magnet adopts a structure that is symmetrically arranged along the length of the balance bar, and the direction of the magnetic pole connection is parallel to the balance bar. Combined with the arc design of the inner and outer coil groups, the magnetic field distribution and magnetic flux change are optimized, making the electromagnetic induction conversion more efficient and stable. This design ensures that when the stone slab is subjected to force and rotates, the magnetic field can act uniformly on the coil to generate a stable induced electromotive force, thereby improving the energy collection efficiency.

[0020] 5. The rounded corner design not only reduces the impact and wear under localized stress, but also allows the paving stones to work stably under various road conditions. In addition, each paving stone can be flexibly combined into a higher-power energy harvesting array through the electrical connection between the base and the external system. It has good expandability and adaptability and is suitable for use in various occasions such as pedestrian walkways and driveways. Attached Figure Description

[0021] Figure 1 This is an overall structural diagram of the present invention;

[0022] Figure 2 This is an exploded view of the entire utility model;

[0023] Figure 3 For the localized explosion of this utility model Figure 1 ;

[0024] Figure 4 For the localized explosion of this utility model Figure 2 ;

[0025] Figure 5 This is a front view of the present invention;

[0026] Figure 6 For the present utility model Figure 5 Sectional view of AA;

[0027] Figure 7 For the present utility model Figure 6 BB section view;

[0028] Figure 8 This is a structural diagram of the present invention;

[0029] Figure 9 This is the usage state of the present utility model. Figure 1 ;

[0030] Figure 10 This is an exploded view of the present invention;

[0031] Figure 11 This is the usage state of the present utility model. Figure 2 ;

[0032] Figure 12 This is the usage state of the present utility model. Figure 3 .

[0033] Explanation of the labels in the diagram

[0034] 1. Stone slab; 2. Balance bar; 3. Piezoelectric group one; 4. Piezoelectric group two; 5. Base; 6. Bracket; 7. Rotating shaft; 8. Piezoelectric group three; 9. Permanent magnet; 10. Inner coil group; 11. Outer coil group; 12. Connecting buckle. Detailed Implementation

[0035] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.

[0036] It should be noted that the directional concepts of "left", "right", "up", "down", "front", "back", "inner", and "outer" in the following scheme are all relative directions, and will not be listed one by one here.

[0037] Example 1

[0038] like Figures 1 to 12 As shown, this embodiment mainly utilizes the piezoelectric effect to achieve energy harvesting. This embodiment adopts a continuously arranged paving stone structure, and each paving stone includes the following main components:

[0039] Stone slab 1 serves as the load-bearing surface of the paving stone. It is laid on the road surface to withstand the pressure of pedestrians, vehicles, or other moving objects. The surface of stone slab 1 is finely processed to ensure flatness and wear resistance.

[0040] The balance bar 2 is fixedly connected to the bottom of the stone slab 1 and is made of highly elastic material. The balance bar 2 can produce elastic deformation under the action of external force, thereby providing mechanical deformation conditions for energy conversion.

[0041] Piezoelectric assembly 3 and piezoelectric assembly 4 are fixedly connected to the two ends of the balance bar 2 near the bottom. Both are made of piezoelectric material. Each piezoelectric assembly consists of multiple piezoelectric sheets stacked to form a piezoelectric stack. The strain direction of the piezoelectric sheets is parallel to the line connecting the stone slab 1 and the base 5. A precise gap of 2 to 3 mm is maintained between the bottom end of the piezoelectric assembly and the top end of the base 5 to ensure that a suitable compression and squeezing effect can be generated when subjected to force.

[0042] The base 5 is located under the piezoelectric group 3 and piezoelectric group 4, providing stable support for the entire structure. The base 5 is fixedly connected to the battery and is electrically connected to the piezoelectric group 3, piezoelectric group 4, piezoelectric group 3, and the piezoelectric stack on the bracket 6 through wires. At the same time, the bases 5 of adjacent paving stones are fixedly connected to each other to enhance the stability of the overall system.

[0043] The bracket 6 is fixedly connected to the top of the base 5 and is symmetrically arranged on the left and right. The bracket 6 is composed of multiple piezoelectric stacks made of piezoelectric materials. The strain direction of the stack is parallel to the line connecting the stone slab 1 and the base 5. When the stone slab 1 is compressed and causes system deformation, the piezoelectric stacks in the bracket 6 synchronously generate the piezoelectric effect, converting mechanical energy into electrical energy, and connecting it to the battery on the base 5 through wires.

[0044] The rotating shaft 7 is fixedly connected to the bracket 6 and is rotatably connected to the balance bar 2, so that the balance bar 2 can not only bend and deform under the action of external force, but also achieve a small rotation. Although the rotating shaft 7 provides the entire structure with a degree of freedom of motion, in this embodiment, its main function is to assist in balancing and structural linkage, while energy harvesting mainly relies on the piezoelectric effect.

[0045] The piezoelectric element group 3 8 is embedded inside the balance bar 2. Multiple piezoelectric elements are arranged inside the balance bar 2. These piezoelectric elements are evenly distributed along the line connecting the stone slab 1 and the base 5. When the balance bar 2 bends or undergoes local deformation, each piezoelectric element in the piezoelectric element group 3 8 is subjected to mechanical stress, thereby generating a voltage signal.

[0046] Although the main energy conversion method in this embodiment is the piezoelectric effect, the permanent magnet 9, the inner coil group 10 and the outer coil group 11 are still provided in the structure. These three parts constitute a backup electromagnetic induction system, which is used to provide auxiliary energy harvesting function under special stress conditions. The permanent magnet 9 is fixed to both ends of the balance bar 2, the inner coil group 10 is set at the outer end of the rotating shaft 7 near the balance bar 2 and the bracket 6, and the outer coil group 11 is fixed on the bracket 6. Both are connected to the battery in a circuit.

[0047] The connecting buckle 12 is set between the balance bars 2 of adjacent paving stones to link each paving stone. When a single paving stone is subjected to external force, the connecting buckle 12 drives the adjacent balance bars 2 to move synchronously, so as to realize the coordinated reset of the overall structure and continuous energy collection.

[0048] Work process

[0049] Force-driven start

[0050] When pedestrians, vehicles or other moving objects pass over the paving stones, pressure is first applied to the stone slab 1. The stone slab 1 transmits the external mechanical force to the balance bar 2, causing the balance bar 2 to undergo elastic deformation.

[0051] piezoelectric energy conversion

[0052] As the balance bar 2 is compressed, the piezoelectric group 3 and piezoelectric group 4 located at its two ends near the bottom maintain a gap of 2 to 3 mm relative to the base 5. At this time, the external force causes the stone slab 1 to move downward, resulting in local compression of the balance bar 2. When the multiple piezoelectric pieces in the piezoelectric group 3 and piezoelectric group 4 are compressed, their strain direction is parallel to the line connecting the stone slab 1 and the base 5, thereby rapidly generating piezoelectric voltage and converting mechanical energy into electrical energy to be transmitted to the battery.

[0053] Meanwhile, the piezoelectric array 8 embedded inside the balance bar 2, with multiple piezoelectric plates evenly distributed within it, is stretched or compressed as the balance bar 2 bends and deforms, generating corresponding electrical signals. This part can capture more subtle mechanical strain changes within the balance bar 2, further improving energy conversion efficiency.

[0054] Under the action of external force, the bracket 6 will also be squeezed. The piezoelectric stack made of multiple piezoelectric materials in the bracket 6 will synchronously generate the piezoelectric effect, converting the additional mechanical energy into electrical energy, and transmitting the energy to the battery on the base 5 through the wire.

[0055] The electrical energy generated by the piezoelectric stack of piezoelectric group 3, piezoelectric group 4, piezoelectric group 3, and support 6 is transmitted to the battery on the base 5 through their respective wires. The battery is also connected to the base 5 of the adjacent paving stone and the external system to form an electrical network, realizing efficient storage and output of energy.

[0056] Reset and linkage

[0057] When the external force disappears, the balance bar 2 quickly returns to its original shape due to its own elasticity. At the same time, the paving stones are linked together through the connecting buckle 12 to ensure that the adjacent balance bars 2 are reset synchronously, providing conditions for the next energy collection and ensuring continuous and stable energy conversion.

[0058] The multi-piezoelectric energy harvesting system, consisting of piezoelectric group 3, piezoelectric group 4, and piezoelectric group 8, causes the balance bar 2 to undergo elastic deformation when the stone slab 1 is subjected to external pressure. The piezoelectric elements in piezoelectric group 3, piezoelectric group 4, and piezoelectric group 8 all obtain maximum mechanical strain in their strain direction (the direction of the line connecting the stone slab 1 and the base 5), thereby generating a higher voltage output and improving energy conversion efficiency.

[0059] When in use, this paving stone is laid in the desired position. When a person, vehicle or other moving object passes over the top of the stone slab 1, this paving stone can collect the energy of the object's movement.

[0060] When the center of the stone slab 1 is pressed down, the stone slab 1, the balance bar 2 and the rotating shaft 7 move downwards, squeezing the support 6, and then collecting energy through the piezoelectric effect. When the external force disappears, the support 6 returns to its original shape under the action of its own elastic force.

[0061] When one end of the stone slab 1 is pressed down, the stone slab 1 drives the balance bar 2 and the piezoelectric electrode 8 to rotate around the shaft 7. The balance bar 2 then drives the permanent magnet 9 to rotate around the shaft 7. When the permanent magnet 9 rotates, it sends changes in the magnetic flux through the inner coil group 10 and the outer coil group 11, thereby generating an induced electromotive force in the inner coil group 10 and the outer coil group 11, collecting the energy during the rotation of the stone slab 1. At this time, the balance bar 2 drives the adjacent balance bar 2 to rotate together through the connecting buckle 12, so that the adjacent paving stones can collect energy together.

[0062] When the other end of the stone slab 1 is pressed down, the stone slab 1 causes the balance bar 2 and the piezoelectric triple 8 to rotate in opposite directions around the rotating shaft 7. At the same time, the balance bar 2 drives the adjacent balance bar 2 to rotate through the connecting buckle 12, thereby realizing energy collection.

[0063] When one end of the stone slab 1 is pressed down, causing the stone slab 1 to rotate, it drives the corresponding piezoelectric group 3 and piezoelectric group 4 to rotate. When piezoelectric group 3 or piezoelectric group 4 comes into contact with the top of the base 5, piezoelectric group 3 or piezoelectric group 4 is squeezed, and piezoelectric group 3 or piezoelectric group 4 then collects energy. At the same time, the adjacent piezoelectric group 3 or piezoelectric group 4 also collects energy through the piezoelectric effect.

[0064] During this process, the two ends of the balance bar 2 near the piezoelectric group 3 and the piezoelectric group 4 are supported by the rotating shaft 7. Therefore, the balance bar 2 undergoes elastic deformation under pressure, which in turn squeezes the piezoelectric group 3 8, and the piezoelectric group 3 8 collects energy.

[0065] Throughout the process, the stent 6 will be compressed, thereby collecting energy;

[0066] During use, two adjacent balance rods 2 are linked by the connecting buckle 12. Without the need for a reset device, they can return to their original positions under the action of mutual linkage, thereby reducing energy loss and making fuller use of energy. When one end of the balance rod 2 moves down, the other end moves up. When one end of the balance rod 2 moves to the lower limit, the other end moves to the upper limit. At this time, the upper end of the balance rod 2 is pulled closer to the adjacent balance rod 2 under the action of the connecting buckle 12, thereby causing the balance rod 2 to produce a certain deformation around the rotating shaft 7. During this process, the piezoelectric three 8 collects energy through the piezoelectric effect.

[0067] The piezoelectric effect of piezoelectric group 1 (3), piezoelectric group 2 (4), support (6), and piezoelectric group 3 (8) combined with the electromagnetic induction of permanent magnet (9), inner coil group (10), and outer coil group (11) can fully utilize the energy of the object's motion. The cooperation of permanent magnet (9), inner coil group (10), and outer coil group (11) enables the balance rod (2) to collect energy through electromagnetic induction when rotating in both directions, without the need for a reset device, thus improving energy utilization.

[0068] The linkage between the base 5 and the adjacent paving stone and the connecting buckle 12 between the balance bar 2 is achieved, so that the overall structure of the paving stone is stable and can quickly return to its original shape after being subjected to multiple forces, reducing energy loss and achieving continuous and stable energy collection.

[0069] In this embodiment, piezoelectric group 1 3, piezoelectric group 2 4 and embedded piezoelectric group 3 8 are simultaneously set at the center and on both sides of the stone slab 1, and a piezoelectric stack is configured in the bracket 6, so that no matter where the pressure is applied to the stone slab 1, the corresponding piezoelectric effect can be stimulated, ensuring the comprehensiveness and efficiency of energy harvesting.

[0070] Although this embodiment mainly relies on the piezoelectric effect, the structure also includes a permanent magnet 9, an inner coil group 10, and an outer coil group 11, which can provide auxiliary electromagnetic induction energy conversion under special stress conditions, providing redundancy and diversified energy harvesting methods for the overall system, and further improving the system's adaptability and stability.

[0071] Because the balance bar 2 is made of highly elastic material and is connected to the external control system through wires, the system can not only monitor the working status of each piezoelectric component in real time, but also the fixed connection method between adjacent paving stones facilitates the expansion and maintenance of the overall structure, making it suitable for various complex road conditions.

[0072] In summary, Example 1, through the organic combination of stone slab 1, balance bar 2, piezoelectric group one 3, piezoelectric group two 4, piezoelectric group three 8, base 5, bracket 6, and connecting buckle 12, achieves the goal of efficiently converting the mechanical energy of an object's motion into electrical energy using the piezoelectric effect, and has excellent effects in terms of stability, continuity, and multi-point data acquisition.

[0073] Example 2

[0074] like Figures 1 to 12 As shown, this embodiment focuses on improving the electromagnetic induction energy harvesting part, while also taking into account the linkage and stability of the overall structure.

[0075] Based on Example 1, Example 2 improves upon the following components in Example 1: slab 1, balance bar 2, piezoelectric assembly 1 3, piezoelectric assembly 2 4, piezoelectric assembly 3 8, base 5, bracket 6, rotating shaft 7, connecting buckle 12, and the wiring system connected to the battery.

[0076] The permanent magnet 9 consists of permanent magnet one and permanent magnet two, which are symmetrically arranged along the length of the balance rod 2. The direction of the line connecting the two poles of permanent magnet one and permanent magnet two is parallel to the length of the balance rod 2, ensuring that the magnetic field is evenly distributed during the rotation of the balance rod 2, which facilitates the generation of stable and effective magnetic flux changes.

[0077] Slide grooves are provided at both ends of the balance bar 2 and at the corresponding positions of the connecting buckle 12. The inner wall of the slide groove and the outer end of the connecting buckle 12 form a sliding connection, so that the connecting buckle 12 can slide smoothly along the length of the balance bar 2. This design not only helps the paving stones to move in sync, but also reduces the movement resistance caused by friction and improves the speed and coordination of the overall reset.

[0078] The outer end of the inner coil group 10, near the permanent magnet 9, is designed with an arc-shaped structure, which makes the curved surface of the inner coil group 10 fit more closely with the permanent magnet 9. At the same time, the side of the permanent magnet 9 near the inner coil group 10 is set to cooperate with the outer end of the inner coil group 10, while the side of the permanent magnet 9 away from the inner coil group 10 also adopts an arc-shaped structure. The outer coil group 11 is fixed on the bracket 6 and cooperates with the outer end of the permanent magnet 9. This series of arc-shaped structure designs optimizes the magnetic flux coupling effect between the permanent magnet 9 and the inner coil group 10 and the outer coil group 11 during rotation, and improves the electromagnetic induction conversion efficiency.

[0079] Both adjacent stone slabs 1 have rounded corners at their closest ends, and both adjacent balance bars 2 also have rounded corners at their closest ends. The rounded corner design improves the coordination between the components of the paving stones when they are in motion, reduces the impact and wear caused by the rigidity of the edges and corners, and improves the durability and stability of the overall structure.

[0080] In summary, while retaining the advantages of piezoelectric energy conversion based on piezoelectric effect in Example 1, Example 2 improves the electromagnetic induction energy conversion function by using the symmetrical structure of permanent magnet 9, the arc-shaped optimization of inner coil group 10 and outer coil group 11, and the cooperation of sliding grooves at both ends of balance bar 2 and connecting buckle 12, thus providing a dual energy collection method for the paving stone as a whole.

[0081] Work process

[0082] When pedestrians, vehicles or other moving objects pass over the paving stones, pressure is first applied to the stone slab 1. After the pressure is transmitted to the balance bar 2, the balance bar 2 bends and is locally squeezed due to the elastic material properties. This causes the piezoelectric group 1 3, piezoelectric group 2 4 and piezoelectric group 3 8 to convert part of the mechanical energy into electrical energy through the piezoelectric effect. At the same time, the piezoelectric stack in the support 6 also starts to work.

[0083] At this time, the sliding grooves at both ends of the balance bar 2 and the sliding engagement of the connecting buckle 12 ensure smooth linkage between each paving stone. The overall structure quickly resets after the external force is released, creating conditions for subsequent energy collection.

[0084] When one end of the stone slab 1 is subjected to local pressure, the stone slab 1 causes the balance rod 2 and the piezoelectric assembly 8 to rotate around the shaft 7. As the balance rod 2 rotates, the permanent magnets 9 (composed of permanent magnet one and permanent magnet two) fixed at both ends of it also rotate.

[0085] During rotation, due to the optimized arc-shaped structure design between the permanent magnet 9 and the inner coil group 10 and the outer coil group 11, the rotation of the permanent magnet 9 causes the magnetic flux in the inner coil group 10 and the outer coil group 11 to change continuously and uniformly, thereby generating a significant induced electromotive force in the coil group. This electrical energy, together with the energy converted through the piezoelectric effect, is transmitted through the wire to the battery connected to the base 5 to achieve energy storage.

[0086] When the other end of the stone slab 1 is subjected to pressure, the stone slab 1 drives the balance bar 2 and the piezoelectric assembly 8 to rotate in opposite directions. At the same time, the balance bar 2 of the adjacent paving stone is driven to rotate synchronously through the connecting buckle 12. In this way, no matter which end of the stone slab 1 is subjected to force, the permanent magnet 9 can achieve bidirectional rotation, thereby generating an induced electromotive force in the inner coil assembly 10 and the outer coil assembly 11, ensuring the stable collection of electromagnetic induction energy.

[0087] During this process, the piezoelectric element 8 embedded in the balance bar 2 generates piezoelectric signals synchronously due to bending, stretching or compression, further enhancing the overall energy conversion effect.

[0088] The electrical energy generated by the permanent magnet 9, the inner coil group 10 and the outer coil group 11 through electromagnetic induction, together with the electrical energy converted by the piezoelectric stack of piezoelectric group 3, piezoelectric group 4, piezoelectric group 3 and bracket 6, is transmitted to the battery on the base 5 through the wire. The batteries on the multiple bases 5 can be connected in series or in parallel as needed to form an overall electrical energy system, and then the energy can be further utilized or stored through an external system.

[0089] The permanent magnet 9 is symmetrically composed of permanent magnet one and permanent magnet two, and the direction of the magnetic pole connection line is parallel to the length direction of the balance rod 2, so that the magnetic field is evenly distributed during rotation. In addition, the arc-shaped structure design of the inner coil group 10 and the outer coil group 11 makes the magnetic flux change more continuous and stable, thereby greatly improving the electromagnetic induction conversion efficiency.

[0090] The balance bar 2 is designed with sliding grooves at both ends and sliding connection buckles 12, which allows the buckles 12 to slide smoothly along the balance bar 2, ensuring coordinated movement between the paving stones. Whether it is local rotation or overall linkage, it can achieve smooth movement without jamming or excessive friction, reducing mechanical energy loss.

[0091] Example 2 organically combines piezoelectric conversion and electromagnetic induction as two energy harvesting methods. Whether the stone slab 1 is under overall compression caused by pressure or under localized rotation caused by force, each method can give full play to its advantages and ensure that the paving stone can efficiently harvest the kinetic energy of the object under various stress conditions.

[0092] The rounded corner design reduces impact and wear during the linkage process between adjacent stone slabs 1 and balance bar 2. At the same time, all components are connected to the battery through wires to form a complete energy network system. The optimized mechanical structure design between components gives the whole system excellent fatigue resistance and long-term stable operation capability.

[0093] Thanks to its dual energy conversion mode and linkage reset design, the paving stone system does not require an additional reset device and is suitable for various road conditions. At the same time, the batteries on multiple bases 5 can be connected in series or in parallel to flexibly form a larger power external power system, which has good scalability and adaptability.

[0094] In summary, by introducing the symmetrical structure of the permanent magnet 9, the sliding linkage of the groove and the connecting buckle 12, the arc-shaped structure of the inner coil group 10 and the outer coil group 11, and the rounded corner design on the basis of Example 1, Example 2 not only realizes the dual energy conversion of electromagnetic induction and piezoelectric effect, but also improves the energy collection efficiency, system stability and operational reliability, providing a more complete and efficient energy collection solution for paving stone applications.

[0095] The above description is only a preferred embodiment of the present utility model. It should be understood that the present utility model is not limited to the form disclosed herein and should not be regarded as an exclusion of other embodiments. It can be used in various other combinations, modifications and environments, and can be modified within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and changes made by those skilled in the art that do not depart from the spirit and scope of the present utility model should be protected within the scope of the appended claims.

Claims

1. A paving stone for object motion energy harvesting, characterized by, The system comprises multiple paving stones connected in sequence. Each paving stone includes a stone slab (1). A balance bar (2) is fixedly connected to the bottom of the stone slab (1). Piezoelectric assembly 1 (3) and piezoelectric assembly 2 (4) are fixedly connected to both ends of the balance bar (2) near its bottom, respectively. A base (5) is provided on the lower side of piezoelectric assembly 1 (3) and piezoelectric assembly 2 (4). A bracket (6) is fixedly connected to the top of the base (5) and is arranged symmetrically on both sides. A rotating shaft (7) is fixedly connected to the bracket (6). The rotating shaft (7) is rotatably connected to the balance bar (2). A piezoelectric assembly 3 (8) is embedded in the balance bar (2). Permanent couplings are fixedly connected to both ends of the balance bar (2) along the axis of the rotating shaft (7). The magnet (9) has an inner coil group (10) fixedly connected to the bracket (6) at the outer end of the rotating shaft (7) between the balance bar (2) and the bracket (6). The permanent magnet (9) has an outer coil group (11) on the side away from the inner coil group (10). The outer coil group (11) is fixedly connected to the bracket (6). The base (5) is fixedly connected to a storage battery. A connecting buckle (12) is provided between the balance bars (2) on two adjacent paving stones. The piezoelectric group one (3), piezoelectric group two (4), piezoelectric group three (8), inner coil group (10) and outer coil group (11) are all electrically connected to the storage battery through wires. The storage batteries on multiple paving stones are electrically connected to the external system through wires.

2. The cobble for object motion energy harvesting according to claim 1, characterized in that: The permanent magnet (9) includes a permanent magnet one and a permanent magnet two symmetrically arranged along the length direction of the balance bar (2), and the direction of the line connecting the two poles of the permanent magnet one and the permanent magnet two is parallel to the length direction of the balance bar (2).

3. The cobble for object motion energy harvesting according to claim 1, characterized in that: Both ends of the balance bar (2) are provided with sliding grooves that cooperate with the connecting buckle (12) at the corresponding positions. The inner wall of the sliding groove is slidably connected to the outer end of the connecting buckle (12), and the connecting buckle (12) can slide along the length direction of the balance bar (2) in the sliding groove.

4. The paver stone for object motion energy harvesting according to claim 1, wherein: The piezoelectric group one (3), piezoelectric group two (4) and piezoelectric group three (8) are all made of piezoelectric material. Each of the piezoelectric group one (3), piezoelectric group two (4) and piezoelectric group three (8) includes multiple piezoelectric sheets. The multiple piezoelectric sheets form a piezoelectric stack. The multiple piezoelectric sheets on piezoelectric group three (8) are evenly distributed in the balance bar (2) along the line connecting the stone slab (1) and the base (5). The strain direction of the multiple piezoelectric sheets on piezoelectric group one (3), piezoelectric group two (4) and piezoelectric group three (8) is parallel to the line connecting the stone slab (1) and the base (5).

5. The paver stone for object motion energy harvesting according to claim 1, wherein: The balance bar (2) is made of elastic material. The piezoelectric group one (3), piezoelectric group two (4) and piezoelectric group three (8) are all electrically connected to the external control system through wires. The two adjacent bases (5) are fixedly connected to each other.

6. The paver stone for object motion energy harvesting of claim 1, wherein: The outer end of the inner coil group (10) near the permanent magnet (9) has an arc-shaped structure. The end of the permanent magnet (9) near the inner coil group (10) is matched with the outer end of the inner coil group (10). The end of the permanent magnet (9) away from the inner coil group (10) also has an arc-shaped structure. The outer coil group (11) is matched with the outer end of the permanent magnet (9).

7. The paver stone of claim 1, wherein: The two adjacent stone slabs (1) are provided with rounded corners at their closest ends, and the two adjacent balance bars (2) are also provided with rounded corners at their closest ends.

8. The paver of claim 1, wherein: The bracket (6) is a piezoelectric stack made of multiple piezoelectric materials, and the strain direction of the piezoelectric stack is parallel to the line connecting the stone slab (1) and the base (5). The bracket (6) is electrically connected to the battery on the base (5) via a wire.

9. The paver stone of claim 1, wherein: The bottom of the piezoelectric group one (3) and piezoelectric group two (4) are 2-3 mm apart from the top of the base (5).

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