A road domain multi-clean energy fusion complementary power generation system

Abstract

The application discloses a kind of road domain multiple clean energy fusion complementary power generation systems, belong to road engineering technical field, including roadbed, and the pressure layer being laid on roadbed, the protective shell is embedded in the pressure layer, the piezoelectric power generation device is arranged in the protective shell, and the piezoelectric power generation device is below the pressure layer, vehicle load is transferred to piezoelectric power generation device by pressure layer, the piezoelectric power generation device is used to convert mechanical energy into electrical energy when vehicle passes;Photovoltaic power generation device is equipped with on the side of roadbed, photovoltaic device control module, dynamic coordination control module and piezoelectric power generation device control module are equipped between photovoltaic power generation device and piezoelectric power generation device, and the synergic optimization and dynamic regulation and control of two energy generation strategies are realized by intelligent algorithm.The application solves the problems of low mechanical energy conversion efficiency of piezoelectric unit in road scene, insufficient self-maintenance ability of photovoltaic power generation, insufficient multi-energy complementary power generation fusion and the like.

Description

Technical Field

[0001] This invention belongs to the field of road engineering, and relates to the fields of pavement energy harvesting and intelligent transportation technology, and in particular to a road-domain multi-clean energy integrated and complementary power generation system. Background Technology

[0002] In existing road energy harvesting technologies, piezoelectric generators and photovoltaic (PV) devices have been used to collect kinetic energy from vehicle movement and utilize solar energy, respectively. Traditional solutions have significant limitations, including: low energy conversion efficiency of piezoelectric units and a lack of effective mechanical amplification structures; photovoltaic power generation is significantly affected by weather and time of day, resulting in unstable output; and a lack of coordinated control between the two energy sources, failing to achieve spatiotemporal complementarity. Furthermore, existing systems are often simple in structure and single in function, unable to adapt to the energy capture needs of different road scenarios and changing traffic conditions, and even less capable of providing continuous and stable power to road infrastructure. Summary of the Invention

[0003] This invention addresses the shortcomings of existing technologies by providing a multi-clean energy integrated and complementary power generation system for road environments, thereby solving problems such as low mechanical energy conversion efficiency of piezoelectric units, insufficient self-maintenance capability of photovoltaic power generation, and insufficient integration of multi-energy complementary power generation in road scenarios.

[0004] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: A road-based multi-clean energy integrated and complementary power generation system includes a roadbed and a pressure-bearing layer laid on the roadbed. A protective shell is embedded in the pressure-bearing layer, and piezoelectric power generation devices are arranged inside the protective shell. The piezoelectric power generation devices are located below the pressure-bearing layer and are arranged in an array inside the protective shell. Vehicle loads are transmitted to the piezoelectric power generation devices through the pressure-bearing layer. The piezoelectric power generation devices are used to convert the mechanical energy generated when vehicles pass through into electrical energy. The roadbed is equipped with a photovoltaic power generation device, which also includes a photovoltaic device control module, a dynamic coordination control module, and a piezoelectric power generation device control module. The photovoltaic device control module is connected to the photovoltaic power generation device and is used to control its operation; the dynamic coordination control module is electrically connected to both the photovoltaic device control module and the piezoelectric power generation device control module, and is used to achieve coordinated optimization and dynamic regulation of photovoltaic power generation and piezoelectric power generation.

[0005] By adopting the above scheme, road space resources can be fully utilized, and the mechanical energy generated by vehicle movement and solar energy can be efficiently integrated and complemented. Piezoelectric power generation devices and photovoltaic power generation devices are connected via power lines for power convergence and energy collaborative management, forming a hybrid power generation system that can work together. The piezoelectric power generation device generates electricity using the mechanical kinetic energy generated by vehicle movement, with peak power generation occurring during periods of high traffic volume; the photovoltaic power generation device generates electricity using solar energy, with peak power generation occurring during periods of sufficient daylight. Based on monitoring real-time traffic flow, light intensity, energy storage system status, and road electricity consumption, intelligent prediction algorithms are used to achieve collaborative optimization and dynamic control of photovoltaic and piezoelectric power generation. The core logic of the intelligent prediction algorithm is as follows: based on historical and real-time data, using machine learning models such as neural networks, it makes rolling predictions of short-term traffic flow fluctuations and light intensity changes, thereby identifying the peak and off-peak periods of photovoltaic and piezoelectric power generation output; based on this prediction result, the energy dispatch unit dynamically adjusts the operating status of the photovoltaic panels, the acquisition sensitivity of the piezoelectric unit, and the charging and discharging strategy of the energy storage system, achieving temporal complementarity of the two heterogeneous energy sources and optimal control of the total system output. This system boasts excellent adaptability and scalability, capable of accommodating diverse road scenarios such as urban roads and highways, and flexibly adjusting to varying traffic flow and lighting conditions. Specifically, its flexibility is demonstrated by the system's ability to adaptively switch pre-set energy dispatch strategies through a dynamic coordination control module, taking into account inherent traffic patterns, lighting characteristics due to geographical location, and special scenarios such as temporary road closures. It also allows for scenario-based configuration of key parameters like the activation threshold of the piezoelectric unit array, the tracking angle of the photovoltaic panels, and the cleaning cycle, thereby optimizing the overall energy capture efficiency of the system. Furthermore, the system structure is easily expandable, allowing for the addition of piezoelectric and photovoltaic power generation devices to further enhance power generation capacity and meet larger-scale electricity demands. The array-style arrangement of the piezoelectric power generation devices maximizes the use of road space, increasing their number and thus enhancing the overall system's ability to capture mechanical energy generated by vehicle movement. This arrangement also facilitates centralized management and maintenance of the piezoelectric power generation devices, reducing subsequent operating costs.

[0006] Furthermore, the piezoelectric power generation device includes, from top to bottom, a pressure transmission lever, a pressure amplification hydraulic press, and a PZT piezoelectric power generation unit; The top of the pressure transmission lever is in contact with the pressure-bearing layer and is used to receive the vehicle load transmitted by the pressure-bearing layer. The pressure amplification hydraulic press is connected to the bottom of the pressure transmission lever via a ball-joint type input piston; The PZT piezoelectric power generation unit is located at the bottom of the protective housing, and its input end is in contact with the pressure transmission piston of the pressure amplification hydraulic press to generate electrical energy.

[0007] By adopting the above scheme, through a three-stage progressive structure of "lever mechanical amplification → hydraulic pressure amplification → piezoelectric conversion", the instantaneous and dispersed pressure generated by vehicle rolling is effectively amplified and concentrated onto the PZT piezoelectric unit, which greatly improves the conversion efficiency of mechanical energy to electrical energy and solves the problem of low output power of traditional road piezoelectric devices due to insufficient pressure.

[0008] Furthermore, the pressure transmission lever is a three-stage pressure transmission lever, including a lever transmission plate, a first-stage lever main rod, a second-stage lever main rod, a third-stage lever main rod, a fulcrum shaft, and a lever fixing rod. The lever transmission plate is connected to the pressure-bearing layer, and the lever fixing rods are respectively fixed on both sides of the inner wall of the protective shell. Multiple fulcrum shafts are provided and are respectively connected to the lever fixing rods. Three pairs of lever main rods are located between the lever fixing rods on both sides, and each stage of lever main rod is hinged to the lever fixing rod through the fulcrum shaft. The three pairs of lever main rods form a stepped shape.

[0009] By adopting the above scheme and using a multi-stage decreasing lever arm design, the force is amplified step by step, achieving a greater amplification factor than a single-stage lever. The lever fixing rods are fixed to both sides of the protective shell, providing an extremely stable support foundation for the entire lever system, ensuring the accuracy and efficiency of the force transmission path, and guaranteeing the structural reliability and durability under repeated impact loads.

[0010] Furthermore, the pressure amplification hydraulic press includes: A ball-joint type input piston is ball-jointed to the output end of the three-stage pressure transmission lever; A damping layer, embedded in the top of the ball-joint input piston, is used to absorb and attenuate impact vibrations from the lever transmission plate; The hydraulic chamber is shaped like a frustum and is filled with hydraulic oil. The pressure transmission piston is located at the bottom of the hydraulic chamber and is in contact with the PZT piezoelectric power generation unit. It is used to transmit the hydraulically amplified pressure downward to the PZT piezoelectric power generation unit. A sealing ring is provided at the upper and lower openings of the hydraulic chamber, and the sealing ring is a double-lip sealing ring. The inner and outer double lips of the sealing ring are respectively interference-fitted with the outer wall of the pressure transmission piston and the inner wall of the hydraulic chamber.

[0011] By adopting the above scheme, the ball-joint input piston design allows for a certain angle of oscillation at the output end of the lever, avoiding jamming or wear caused by installation errors or load skew. The ball-joint connection effectively accommodates minor displacement deviations at the output end of the three-stage pressure transmission lever, ensuring the accuracy and stability of pressure transmission. The damping layer effectively absorbs and attenuates impact vibrations from the lever's force transmission plate, preventing damage to the internal structure of the hydraulic press and extending the equipment's service life. Its frustum-shaped hydraulic chamber structure, with a cross-sectional area design that is smaller at the top and larger at the bottom, hydraulically amplifies the concentrated pressure at the input piston end and transmits it to the bottom based on Pascal's principle. Through hydraulic oil conduction, the hydraulic chamber can quickly respond and transmit pressure under instantaneous high pressure, while remaining relatively stable under low pressure, improving the system's dynamic response capability. The pressure transmission piston is located at the bottom of the hydraulic chamber, in direct contact with the PZT piezoelectric generator unit, ensuring that the hydraulically amplified pressure is accurately and efficiently transmitted to the piezoelectric generator unit, thereby improving the energy conversion efficiency. The sealing ring adopts a double-lip design, and the inner and outer double lips are respectively interference-fitted with the outer wall of the pressure transmission piston and the inner wall of the hydraulic chamber. This design effectively prevents the leakage of hydraulic medium and ensures the sealing performance and reliability of the hydraulic system.

[0012] Furthermore, the piezoelectric power generation device includes a long-stroke secondary pressure transmission lever and a PZT piezoelectric power generation unit. The long-stroke secondary pressure transmission lever is used to bear the pressure of the pressure-bearing layer and transmit the pressure to the PZT piezoelectric power generation unit, which converts the pressure into electrical energy. The long-stroke secondary pressure transmission lever is arranged in a stepped manner.

[0013] Furthermore, the PZT piezoelectric power generation unit is equipped with latching handles on both sides, and the latching handles are embedded in the protective housing.

[0014] Furthermore, the photovoltaic power generation device includes a photovoltaic panel, a support and adjustment column, and a water storage unit connected sequentially from top to bottom. The support and adjustment column supports and adjusts the angle of the photovoltaic panel, and the water storage unit is connected to the cleaning system of the photovoltaic panel through a pipe.

[0015] By adopting the above scheme, the support adjustment column can flexibly adjust the angle of the photovoltaic panels according to the solar altitude and azimuth angles at different times, ensuring they always maintain the optimal light-receiving posture, thereby maximizing the absorption of solar radiation energy and improving photovoltaic power generation efficiency. The connection design between the water storage unit and the photovoltaic panel cleaning system enables the effective utilization of water resources. When cleaning the photovoltaic panels is needed, it can provide cleaning water in a timely manner, ensuring the cleanliness of the photovoltaic panel surface, reducing the obstruction of light by dust and other impurities, and further improving the performance of photovoltaic power generation.

[0016] Furthermore, the photovoltaic panel includes: The photovoltaic panel body has a linear slide rail embedded in its bottom, and a servo linear drive unit is installed in the center of the linear slide rail for driving the pitch adjustment of the photovoltaic panel. A retractable photovoltaic cleaning sprinkler is connected to the water storage unit via a telescopic pipe, and the retractable photovoltaic cleaning sprinkler is located at the front end of the photovoltaic panel; The cleaning device is symmetrically installed on the inner side of the frame on both sides of the photovoltaic panel and is connected to the photovoltaic panel through a double-rail linear slide rail.

[0017] By adopting the above scheme, the servo linear drive unit is installed at the center of the first linear slide rail, which can precisely control the pitch angle adjustment of the photovoltaic panel body, realizing accurate tracking of the photovoltaic panel under different lighting conditions to obtain more solar energy. A retractable photovoltaic cleaning sprinkler is located at the front end of the photovoltaic panel and connected to the water storage unit via a telescopic tube. This design allows the sprinkler to be retracted when not in use, reducing shading of the photovoltaic panel's light-receiving area, while allowing for convenient and quick extension for watering and cleaning operations during use. The cleaning devices are symmetrically installed on the inner sides of the photovoltaic panel's side frames and connected to the photovoltaic panel via double-rail linear slide rails. This layout ensures the stability of the cleaning devices' movement on the photovoltaic panel surface, enabling comprehensive and uniform cleaning of the photovoltaic panel and improving the cleaning effect.

[0018] Furthermore, the retractable photovoltaic cleaning sprinkler includes: Sprinkler unit, used to perform sprinkler operations; The telescopic pipe is connected at both ends to the water spraying unit and the water storage unit, and the telescopic pipe, the water spraying unit and the water storage unit form a closed water supply passage. An electrically controlled telescopic rod installed above the telescopic tube; The telescopic tube is fitted with a guide and limiting unit, which has limiting blocks at both its upper and lower ends. When the sprinkler is driven to extend, the electric telescopic rod extends upward under the command of the photovoltaic device control module, pushing the sprinkler execution unit to the working position. When the cleaning task is completed, the electric telescopic rod receives a reverse drive signal, which drives the entire telescopic tube mechanism together with the sprinkler execution unit to automatically retract, usually into the outer shell at the edge of the photovoltaic device, so that it returns to the non-working state.

[0019] By adopting the above scheme, the sprinkler unit is responsible for spraying water onto the surface of the photovoltaic panel to achieve the cleaning function. The telescopic pipe connects the sprinkler unit and the water storage unit, forming a closed water supply path to ensure a stable water supply. The electrically controlled telescopic rod, as the driving component, connects its output end to the sprinkler unit, controlling its extension and retraction. The electrically controlled telescopic rod receives commands through the photovoltaic power generation main control unit in the photovoltaic device control module. This main control unit runs a cleaning scheduling algorithm, combining data from the light intensity sensor and preset pollution thresholds to intelligently determine the cleaning timing and precisely control the stroke and state of the telescopic rod. This design allows the sprinkler to retract into its casing when not in use, reducing shading of the photovoltaic panel's light-receiving area and improving the system's automation, operational reliability, and ease of use. The guiding and limiting unit ensures directional accuracy during extension and retraction, preventing structural misalignment.

[0020] Furthermore, the cleaning device includes: Double-rail linear slides are symmetrically installed on the inner side of the photovoltaic panel frame; A slider is embedded in the double-track linear slide rail. The slider is equipped with a wringing roller assembly via a bracket. The wringing roller assembly includes two rollers, which are rotatably connected to the two sliders respectively. The rollers pass through the sliders and fix the two ends of the cleaning cloth through the two rollers. When the slider moves the cleaning cloth to the end of the double-track linear slide rail and needs to be wrung out, the two rollers of the wrung-out roller group rotate in opposite directions to clamp and wind the cleaning cloth, squeezing out the sewage and realizing the wrung-out operation of the cleaning cloth; then they rotate in the opposite direction to release the wrung-out cleaning cloth.

[0021] By adopting the above scheme, the symmetrically installed double-rail linear guides on the inner side of the photovoltaic panel frame provide a stable sliding track for the sliders, ensuring their smoothness during movement. The sliding of the two sliders is driven by a servo motor, enabling precise sliding control and allowing the cleaning device to move along a predetermined path on the photovoltaic panel surface. Rollers are rotatably connected to the two sliders, each roller connected to one end of the cleaning cloth. The cleaning cloth is fixed by the two rollers, and as the sliders move, the cleaning cloth thoroughly wipes the photovoltaic panel surface, removing dust and stains. A wringing roller assembly mounted on both sides of the sliders, via a bracket, rotates when the cleaning cloth reaches the end of the double-rail linear guide. One roller rotates clockwise, and the other counterclockwise. This counter-clockwise rotation of the two rollers simulates the action of a user wringing out a towel, effectively drying the cleaning cloth and maintaining good cleaning performance during subsequent cleaning processes. It also avoids water stains caused by an overly wet cleaning cloth, improving the cleaning quality of the photovoltaic panel.

[0022] Compared with the prior art, the present invention has the following technical effects: (1) The multi-stage lever mechanism moves downward under the action of wheel load. The force is amplified step by step through the fulcrum shaft hinged to the protective shell, and drives the ball joint input piston to compress the hydraulic oil in the frustum-shaped hydraulic chamber. The amplified hydraulic action further pushes the bottom transmission piston, and applies the concentrated load evenly to the upper surface of the PZT piezoelectric power generation unit, thereby improving its electromechanical conversion capability and power output level. (2) The photovoltaic panel with integrated cleaning proposed in this invention identifies the pollution on the panel surface and changes in the light angle in real time through the built-in light intensity sensor, triggers the dual-axis tracking system to adjust the orientation and tilt of the panel surface, and links the spray execution unit and the dual-track slider cleaning device to automatically clean and scrape the photovoltaic panel, thereby achieving an integrated improvement in power generation efficiency and self-maintenance capability. The photovoltaic modules, through a horizontal steering mechanism hinged to the top of the support adjustment column, can drive the entire panel to rotate and tilt downwards in emergency mode, allowing the photovoltaic panels to quickly retract to the side of the road. This releases road space while maintaining structural stability and equipment safety, significantly enhancing the system's adaptability in temporary construction scenarios. (3) The piezoelectric power generation unit proposed in this invention is equipped with flip-out buckle handles on both sides. Under normal working conditions, it is rigidly connected to the protective shell through high-strength fasteners. When maintenance or transportation is required, it is unlocked and flipped open to form a standardized hoisting interface that can be used for robotic arm gripping, so as to realize the rapid overall hoisting and position adjustment of the power generation module. (4) The piezoelectric-photovoltaic multi-energy complementary power generation system constructed in this invention collects traffic flow vibration and light intensity data in real time through the roadside control module, and dynamically coordinates the output strategy of the power generation units on both sides and the charging and discharging status of the energy storage unit based on the prediction algorithm, so as to realize the complementary optimization of different energy sources in terms of timing and output, effectively improving the system's power supply reliability and support capability for road infrastructure. Attached Figure Description

[0023] Figure 1 A schematic diagram of a road system that integrates and complements multiple clean energy sources for power generation. Figure 2 A schematic diagram of a power generation system for emergency power supply in a temporary road construction area in an urban area. Figure 3 This is a schematic diagram of a photovoltaic power generation device; Figure 4 A schematic diagram of a foldable photovoltaic power generation device; Figure 5 This is a structural diagram of the photovoltaic device control module; Figure 6 This is a structural diagram of the control module for a piezoelectric power generation device; Figure 7 This is a structural diagram of the dynamic coordination control module; Figure 8This is a structural diagram of a PZT piezoelectric power generation unit; Figure 9 This is a structural diagram of a pressure amplification hydraulic press; Figure 10 This is a structural diagram of a three-stage pressure transmission lever; Figure 11 This is a structural diagram of a long-stroke, two-stage pressure transmission lever; Figure 12 This is a structural diagram of a retractable photovoltaic cleaning sprinkler. Figure 13 Structure of the cleaning device Figure 1 ; Figure 14 Structural diagram of a single screw water supply pump; Figure 15 Structure of the cleaning device Figure 2 ; Figure 16 Structure of the cleaning device Figure 3 .

[0024] Explanation of reference numerals in the attached diagram: 1. Roadbed; 2. Pressure-bearing layer; 3. Protective outer shell; 4. Piezoelectric power generation device; 5. Photovoltaic panel; 6. Supporting and regulating column; 7. Water storage unit; 8. Photovoltaic device control module; 9. Piezoelectric power generation device control module; 10. Dynamic coordination control module; 11. Driving direction; 401. PZT piezoelectric generator unit; 402. Pressure amplification hydraulic press; 403. Pressure transmission lever; 404. Long-stroke two-stage pressure transmission lever; 40101. PZT piezoelectric sheet; 40102. Hemispherical electrode; 40103. Copper-based heat sink; 40104. Bushing; 40105. Silicone substrate; 40106. Buffer layer; 40107. Pull-out tray; 40108. Snap-on handle device; 4 0201, Ball joint type input piston; 40202, Damping layer; 40203, Hydraulic chamber; 40204, Pressure transmission piston; 40205, Sealing ring; 40301, Lever force transmission plate; 40302, First-stage lever main rod; 40303, Second-stage lever main rod; 40304, Third-stage lever main rod; 40305, Lever fixing rod; 40306, Fulcrum shaft; 40401, Long strip lever force transmission plate; 501. Retractable photovoltaic cleaning sprinkler; 502. Cleaning device; 503. Servo linear drive unit; 504. Linear slide rail; 505. Pole-mounted linear slide rail; 506. Folding drive unit; 50101. Sprinkling execution unit; 50102. Electrically controlled telescopic rod; 50103. Guide and limit unit; 50104. Telescopic tube; 50201. Double-rail linear slide rail; 50202. Slider; 50203. Roller; 50204. Cleaning cloth; 50205. Wringing roller assembly; 601. Supporting telescopic column; 602. Horizontal steering servo drive unit; 701. Water tank; 702. Single screw water pump; 70201. Suction end; 70202. Discharge end; 70203. Single-head helical rotor; 70204. Metal sealed housing; 801. Stepper motor; 802. Servo motor; 803. DC geared motor; 804. Dual-axis hinge motor; 805. Reciprocating motor; 806. Rotary motor; 807. Solenoid valve; 808. Single screw pump controller; 809. Photovoltaic power generation main control unit; 810. Photovoltaic inverter; 901. Data Acquisition Unit; 902. Predictive Calculation Unit; 903. Energy Dispatch Unit; 904. Load Control Unit; 905. Storage Unit; 906. Power Management Unit; 1001. Sensor; 1002. Power converter; 1003. Power stabilizer; 1004. Hydraulic regulator; 1005. Piezoelectric generator control unit; 1006. Relay module. Detailed Implementation

[0025] The principles and features of the present invention are described below with reference to all the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0026] This invention discloses a road-domain integrated and complementary power generation system for multiple clean energy sources.

[0027] Example 1 Reference Figure 1 A road-based multi-clean energy integrated and complementary power generation system includes a roadbed 1 and a pressure-bearing layer 2 laid on the roadbed 1, with a protective outer shell 3 embedded within the pressure-bearing layer 2. The system as a whole consists of a piezoelectric power generation device 4 integrated inside the road structure and a photovoltaic power generation device set on the side of the road, which are electrically connected and coordinated for control through a roadside control module group.

[0028] Multiple clean energy sources are integrated and complemented for power generation. The piezoelectric power generation device 4 and the photovoltaic power generation device are connected by a power line for power convergence and energy coordination management, forming a hybrid power generation system that can work together. The piezoelectric power generation device 4 generates electricity using the mechanical kinetic energy generated when vehicles pass by, with peak power generation occurring during periods of high traffic volume; the photovoltaic power generation device generates electricity using solar energy, with its peak power generation occurring during periods of sufficient sunlight during the day.

[0029] Reference Figure 1The protective shell 3 is pre-embedded within the pressure-bearing layer 2, and is fixed to the asphalt or concrete material of the pressure-bearing layer 2 by its outer wall structure. The protective shell 3 is arranged in an array along the driving direction 11. The piezoelectric generator 4 is located inside the protective shell 3, i.e., arranged in an array, so that the piezoelectric generator 4 is entirely located below the pressure-bearing layer 2. The piezoelectric generator 4 is a lever-coupled hydraulic amplification type piezoelectric generator. The vehicle load is transmitted to the piezoelectric generator 4 through the pressure-bearing layer 2. The piezoelectric generator 4 is used to convert the mechanical energy generated when the vehicle passes through into electrical energy.

[0030] Reference Figure 1 The piezoelectric power generation device 4, from top to bottom, includes a pressure transmission lever 403, a pressure amplification hydraulic press 402, and a PZT piezoelectric power generation unit 401. The top of the pressure transmission lever 403 contacts the pressure-bearing layer 2 and is used to receive the vehicle load transmitted by the pressure-bearing layer 2. The pressure amplification hydraulic press 402 is connected to the output end of the pressure transmission lever 403 through a ball-joint type input piston 40201. The PZT piezoelectric power generation unit 401 is located at the bottom of the protective shell 3, and its input end contacts the pressure transmission piston 40204 of the pressure amplification hydraulic press 402 to generate electrical energy. Its frustum-shaped hydraulic chamber structure, through a cross-sectional area design that is smaller at the top and larger at the bottom, hydraulically amplifies the concentrated pressure at the input piston end and transmits it to the bottom according to Pascal's principle. Through a three-stage progressive structure of "multi-stage lever mechanical amplification → frustum-shaped hydraulic pressure amplification → piezoelectric conversion", the instantaneous and dispersed pressure generated by vehicle rolling is effectively amplified and concentrated onto the PZT piezoelectric power generation unit 401, which greatly improves the conversion efficiency of mechanical energy to electrical energy and solves the problem of low output power of traditional road piezoelectric devices due to insufficient pressure.

[0031] Reference Figure 1 and Figure 10 The pressure transmission lever 403 is a three-stage pressure transmission lever, including a lever transmission plate 40301, three pairs of lever main rods, a fulcrum shaft 40306, and lever fixing rods 40305. The lever transmission plate 40301 is circular and directly contacts the pressure-bearing layer 2. The two lever fixing rods 40305 are rigidly fixed to the left and right inner walls of the protective shell 3 by screws. The lever main rod 40302 is hinged between the left and right lever fixing rods 40305 through the fulcrum shaft 40306. The lengths of the three pairs of lever main rods decrease sequentially, forming a stepped structure to achieve step-by-step amplification and transmission of force.

[0032] Reference Figure 10Specifically, the primary lever main body 40302, secondary lever main body 40303, and tertiary lever main body 40304 all include a horizontal bar and a vertical bar fixed below the horizontal bar. The two ends of the horizontal bar of the primary lever main body 40302 are hinged to the lever fixing bar 40305 via a fulcrum shaft 40306. The vertical bar of the primary lever main body 40302 is hinged to the horizontal bar of the secondary lever main body 40303 below it via a fulcrum shaft 40306. The secondary lever main body 40304... The other end of the horizontal rod of 303 is hinged to the left lever fixing rod 40305 via a fulcrum shaft 40306; the vertical rod of the secondary lever main rod 40303 is hinged to the horizontal rod of the tertiary lever main rod 40304 via a fulcrum shaft 40306; the horizontal rod of the tertiary lever main rod 40304 is hinged to the right lever fixing rod 40305 via a fulcrum shaft 40306; and the vertical rod of the tertiary lever main rod 40304 is connected to the frustum-shaped piezoelectric power generation pressure amplification hydraulic press 402 below.

[0033] Reference Figure 1 and Figure 9 The pressure amplifying hydraulic press 402 has a frustum-shaped structure and is located below the main body rod 40304 of the three-stage lever. The top of the pressure amplifying hydraulic press 402 is equipped with a ball-joint type input piston 40201, which is hinged to the vertical rod of the main body rod 40304 of the three-stage lever. This allows the pressure transmission lever 403 to have a certain angular deflection, avoiding jamming or wear caused by installation errors or load skew. Through the ball-joint connection, it can effectively adapt to the small displacement deviation of the output end of the three-stage pressure transmission lever, ensuring the accuracy and stability of pressure transmission.

[0034] The pressure amplification hydraulic press 402 also includes a damping layer 40202, a hydraulic chamber 40203, a pressure transmission piston 40204, and a sealing ring 40205. The damping layer 40202 is an octagonal metal damping layer embedded in the top of the ball-joint input piston 40201, used to absorb and attenuate impact vibrations from the lever transmission plate 40301. The central part of the pressure amplification hydraulic press 402 is a frustum-shaped hydraulic chamber 40203 with a converging sidewall structure, filled with hydraulic oil. The pressure transmission piston 40204 is installed at the bottom of the hydraulic chamber 40203, transmitting the hydraulically amplified pressure downwards to the PZT piezoelectric power generation unit 401. Sealing rings 40205 are provided at the upper and lower openings of the frustum-shaped hydraulic chamber 40203. The sealing rings 40205 are double-lip dustproof sealing rings. Their inner and outer double lips are respectively interference-fitted with the outer wall of the pressure transmission piston 40204 and the inner wall of the hydraulic chamber 40203, which effectively prevents the leakage of hydraulic medium and ensures the sealing and reliability of the hydraulic system.

[0035] Reference Figure 1 and Figure 8The PZT piezoelectric power generation unit 401 receives pressure from the pressure amplification hydraulic press 402. The PZT piezoelectric power generation unit 401 adopts a multi-layer composite structure design. The PZT piezoelectric power generation unit 401 includes a PZT piezoelectric sheet 40101, which is embedded in a groove in a silicone substrate 40105. A hemispherical electrode 40102 is embedded at the top, and a copper-based heat sink 40103 is located at the bottom. An octagonal bushing 40104 protects the bottom, together forming the power generation core. The generated charge is collected and output. The bottom of the PZT piezoelectric power generation unit 401 has a buffer layer 40106 and a pull-out tray 40107. Both sides of the PZT piezoelectric power generation unit 401 are equipped with flip-up latching handles 40109, which are inserted into preset slots in the protective shell 3 via a rotating shaft. During normal operation, the latch handle device 40109 is in the locked position, and the PZT piezoelectric generator unit 401 is firmly pressed into the installation position by the built-in fasteners; during maintenance or replacement, the lock is released and the latch handle device 40109 is flipped to the upright position, which forms the gripping force point of the robotic arm, and the entire unit can be safely taken out along the pull-out tray direction.

[0036] It should be noted that PZT piezoelectric sheets are multi-layered, and the power generation principle is to generate an electric field by mechanically deforming the piezoelectric layers.

[0037] Reference Figure 1 The photovoltaic power generation device is installed beside the road and, from top to bottom, includes a photovoltaic panel 5, a support and adjustment column 6, and a water storage unit 7. The support and adjustment column 6 supports and adjusts the angle of the photovoltaic panel 5, and the water storage unit 7 is connected to the cleaning system of the photovoltaic panel 5 through pipes. The bottom of the support and adjustment column 6 is fixed to the concrete foundation of the ground with anchor bolts, and its top supports the photovoltaic panel 5. The water storage unit 7 is usually installed on or near the top of the support and adjustment column 6.

[0038] Reference Figure 1 and Figure 3 The support adjustment column 6 consists of a main column, a support telescopic column 601, and a horizontal steering servo drive unit 602. It can adjust the height and horizontal angle of the photovoltaic panel 5 to keep it in the best light-receiving posture, thereby maximizing the absorption of solar radiation energy and improving the photovoltaic power generation efficiency.

[0039] The connection design between the water storage unit 7 and the cleaning system of the photovoltaic panel 5 enables the effective use of water resources. When it is necessary to clean the photovoltaic panel 5, it can provide cleaning water in a timely manner, ensuring the cleanliness of the surface of the photovoltaic panel 5, reducing the obstruction of light by dust and other impurities, and further improving the performance of photovoltaic power generation.

[0040] Reference Figure 3 and Figure 14The water storage unit 7 includes a water tank 701 and a single screw water pump 702. The top of the single screw water pump 702 is connected to a telescopic pipe 50104. The suction end 70201 of the single screw water pump 702 is connected to the water outlet at the bottom of the water tank 701. The discharge end 70202 is connected to the telescopic pipe 50104 through a water pipe. A single-head spiral rotor 70203 is assembled with a metal sealing shell 70204: the single-head spiral rotor 70203 is embedded in the spiral stator cavity of the metal sealing shell 70204, and both ends of the single-head spiral rotor 70203 are connected to the end caps of the metal sealing shell 70204 through bearings.

[0041] Reference Figure 3 , Figure 12 , Figure 13 and Figure 15 The photovoltaic panel 5 includes a photovoltaic panel body, a retractable photovoltaic cleaning sprinkler 501, and a cleaning device 502. A linear slide rail 504 is embedded in the bottom of the photovoltaic panel body. A servo linear drive unit 503 is fixedly installed at the center of the linear slide rail 504. This unit includes a servo motor, a reduction mechanism, and a ball screw pair that converts rotational motion into linear motion. The housing of the servo linear drive unit 503 is bolted to the linear slide rail 504. The screw nut at its output end is connected to a hinged support on the back of the photovoltaic panel 5. The servo motor drives the screw to rotate, causing the screw nut to reciprocate along the linear slide rail 504, thereby driving the photovoltaic panel 5 to adjust its pitch angle around its horizontal axis. The retractable photovoltaic cleaning sprinkler 501 is connected to the water storage unit 7 via a telescopic tube 50104, and the retractable photovoltaic cleaning sprinkler 501 is located at the front end of the photovoltaic panel 5. The cleaning device 502 is symmetrically installed on the inner sides of the frame on both sides of the photovoltaic panel 5 and connected to the photovoltaic panel 5 via a double-rail linear slide rail 50201. The cleaning device 502 is symmetrically installed on the inner side of the two side frames of the photovoltaic panel 5 and connected to the photovoltaic panel 5 through the double-rail linear slide rail 50201. This layout ensures the stability of the cleaning device 502 moving on the surface of the photovoltaic panel 5, and can clean the photovoltaic panel 5 comprehensively and evenly, thus improving the cleaning effect.

[0042] The retractable photovoltaic cleaning sprinkler 501 includes a sprinkling execution unit 50101, a telescopic pipe 50104, an electrically controlled telescopic rod 50102, and a guiding and limiting unit 50103. The sprinkling execution unit 50101 performs the sprinkling operation; both ends of the telescopic pipe 50104 are connected to the sprinkling execution unit 50101 and a water storage unit 7, respectively, forming a closed water supply path; the electrically controlled telescopic rod 50102 is installed above the telescopic pipe 50104; the guiding and limiting unit 50103 is fitted into the middle of the telescopic pipe 50104, and includes a guide sleeve and limiting blocks. The guide sleeve is nested in the middle of the telescopic pipe 50104, and the limiting blocks are installed at the upper and lower ends of the guide sleeve; when performing the sprinkling task, water is sprayed... The execution unit 50101 extends outward under the drive of the electrically controlled telescopic rod 50102. After the cleaning task is completed, the electrically controlled telescopic rod 50102 moves in the opposite direction, causing the water spraying execution unit 50101 to retract axially into the outer casing at the edge of the photovoltaic device, resetting it to a non-working state. The electrically controlled telescopic rod 50102 is regulated by the photovoltaic device control module 8. Its photovoltaic power generation main control unit 809 processes the light attenuation rate and dust accumulation data on the panel surface monitored in real time by sensors according to the cleaning scheduling algorithm. When the data exceeds the set threshold, the main control unit sends a drive signal to the electrically controlled telescopic rod to control the extension of the water sprayer for cleaning and its automatic retraction after the task is completed. This design allows the retractable photovoltaic cleaning water sprayer 501 to be completely retracted into the outer casing when not in use, reducing the shading of the photovoltaic panel 5's light-receiving area, while allowing it to extend quickly and stably to perform cleaning tasks during use.

[0043] It is important to note that the purpose of the telescopic pipe is to ensure a stable connection when the photovoltaic device moves or retracts, preventing the pipe from breaking when the photovoltaic panel moves. When the photovoltaic panel is stationary, the telescopic pipe functions as a water passage, allowing water from the storage unit to enter the sprinkler unit for operation. Furthermore, the sprinkler unit has an internal water passage connected to the telescopic pipe, enabling water to enter and perform the sprinkler operation.

[0044] Reference Figure 13 , Figure 15 and Figure 16The cleaning device 502 includes a double-track linear slide rail 50201 symmetrically installed on the inner side of the frame of the photovoltaic panel 5. Two sliders 50202 are embedded in the double-track linear slide rail 50201. The sliders 50202 are driven by a sliding servo motor 802 to achieve smooth and uniform cleaning action. Rollers 50203 are mounted on the sliders 50202 and are rotatably connected to the two sliders 50202 to fix the cleaning cloth 50204, allowing the cleaning cloth 50204 to move smoothly and evenly. 204 moves synchronously with slider 50202. Cleaning cloth 50204 is fixed to roller 50203 by quick-release buckles. Wringing roller group 50205 is provided on both sides of slider 50202. Wringing roller group 50205 is installed on the side of slider 50202 by bracket. Wringing roller group 50205 is a bidirectional rotating wringing roller group. When cleaning cloth 50204 moves to the end of double-track linear slide rail 50201 and needs to be wrung out, the wringing roller group 50205 realizes the wringing operation of cleaning cloth 50204. Specifically, when the cleaning cloth 50204 needs to be wrung out, the two rollers of the wringing roller assembly 50205 rotate in opposite directions. One roller 50203 rotates counterclockwise, and the other roller 50203 rotates clockwise, simulating the user's hand wringing out a towel. This winds the cleaning cloth 50204, squeezing out the wastewater. Then, the rollers rotate in the opposite direction to release the wrung-out cleaning cloth 50204. The entire process is automated. It should be noted that in this embodiment, the wringing roller assembly 50205 also includes a motor. The rotation of each roller 50203 is driven by the motor. The motor driving the rotation of the rollers 50203 is not shown in this embodiment.

[0045] It should be noted that in this embodiment, the inner side of the double-track linear slide rail 50201 is provided with a certain cavity. That is, after the slider 50202 is adapted to the double-track linear slide rail 50201, the inner cavity of the double-track linear slide rail 50201 is also provided with a cavity so that the wringing roller assembly 50205 can be placed inside. In this way, when the slider 50202 slides, it can drive the wringing roller assembly 50205 to slide synchronously, and drive the cleaning cloth 50204 to move to the designated position (generally the end) to perform the wringing operation.

[0046] A photovoltaic device control module 8, a dynamic coordination control module 10, and a piezoelectric power generation control module 9 are provided between the photovoltaic power generation device and the piezoelectric power generation device 4. The photovoltaic device control module 8 is connected to the photovoltaic power generation device and is used to control its operation. The dynamic coordination control module 10 is connected to both the photovoltaic device control module 8 and the piezoelectric power generation control module 9 and is used to achieve coordinated optimization and dynamic regulation of photovoltaic power generation and piezoelectric power generation.

[0047] Reference Figure 7The piezoelectric power generation control module 9 is used for mechanical energy capture and equipment safety protection. It integrates multiple sensing and actuation units, including a sensor 1001, an energy converter 1002, an energy stabilizer 1003, a hydraulic regulator 1004, a piezoelectric power generation main control unit 1005, and a relay module 1006. These are connected to each device unit via wires. The sensor 1001 includes a pressure sensor, a temperature sensor, and a displacement sensor, which monitor wheel load, device and oil temperature, and piston stroke, respectively. The energy converter 1002 performs AC / DC conversion; the energy stabilizer 1003 filters and stabilizes the voltage; the hydraulic regulator 1004 regulates the fluid chamber pressure or flow rate; the piezoelectric power generation main control unit 1005 processes data, manages energy collection, and communication; and the relay module 1006 implements circuit continuity protection. The piezoelectric power generation control module 9 ensures the efficient and reliable operation of the piezoelectric power generation device 4 and transmits the electrical energy to the DC microgrid.

[0048] Reference Figure 5 The photovoltaic device control module 8 is responsible for receiving, coordinating, and driving the execution. It includes: a stepper motor 801, a servo motor 802, a DC geared motor 803, a dual-axis hinge motor 804, a reciprocating motor 805 and a rotary motor 806, a solenoid valve 807, a single screw pump controller 808 for controlling the photovoltaic power generation device, a photovoltaic power generation main control unit 809 that integrates the MPPT algorithm (for an introduction to the MPPT algorithm, please refer to the link https: / / wenku.baidu.com / view / 62451900d6bbfd0a79563c1ec5da50e2534dd116.html?_wkts_=1758874872462&bdQuery=MPPT%E7%AE%97%E6%B3%95), which tracks the maximum power point of the photovoltaic panel 5 in real time, and a photovoltaic inverter 810 that converts the generated DC power into AC power or an adapted DC power to feed into the microgrid. Each unit is connected to the photovoltaic power generation main control unit 809 via an internal bus and receives instructions from the dynamic coordination control module 10 via a communication interface.

[0049] The MPPT algorithm, or Maximum Power Point Tracking algorithm, is a control technique that ensures photovoltaic (PV) cells always operate near their maximum power point. In PV power generation systems, the output power of PV cells changes with factors such as sunlight intensity and temperature. The MPPT algorithm plays a crucial role because it tracks the maximum power point of PV cells in real time, allowing the system to generate electricity at its highest efficiency. This significantly improves the power generation efficiency of PV systems, reduces power generation costs, and provides strong support for the efficient utilization of renewable energy.

[0050] Reference Figure 6The dynamic coordination control module 10 is used for overall prediction and scheduling. It includes a data acquisition unit 901, which collects traffic flow, sunlight, SOC, and load power in real time; a prediction calculation unit 902, which predicts traffic flow and sunlight trends based on neural networks and identifies peak and valley power generation; an energy scheduling unit 903, which dynamically adjusts the operating status of the photovoltaic panels 5 and the charging and discharging of energy storage according to the prediction results; a load control unit 904, which intelligently allocates power to road loads according to power generation capacity and preset priorities; a storage unit 905, which caches data and models; and a power management unit 906, which supplies power to the module. This module interacts with each sub-control system and energy storage through wired / wireless means to achieve closed-loop control.

[0051] The system collects real-time data on traffic flow, light intensity, energy storage status, and load demand. The prediction calculation unit 902 predicts future power generation and consumption based on historical and real-time data. The energy dispatch unit 903 dynamically coordinates the working status of the photovoltaic and piezoelectric power generation devices 4 according to the prediction results, so as to achieve complementary output of the two energy sources in time. The load control unit 904 intelligently regulates the power supply sequence and power distribution of road electrical equipment according to the system's power generation capacity and preset priority strategy, effectively improving the power supply reliability and energy utilization efficiency of the system in normal road scenarios and emergency scenarios of temporary road occupation construction.

[0052] The dynamic coordination control method, based on real-time monitoring of traffic flow, light intensity, energy storage system status, and road electricity consumption, achieves coordinated optimization and dynamic regulation of photovoltaic power generation and piezoelectric power generation through intelligent prediction algorithms. The system first acquires real-time traffic flow, light intensity, energy storage device status, and road electricity consumption through the data acquisition unit 901. The prediction calculation unit 902 then predicts and analyzes future traffic flow and light trends to identify peak and off-peak periods for photovoltaic and piezoelectric power generation. Based on the prediction results, the energy dispatch unit 903 dynamically coordinates the operating status of the photovoltaic and piezoelectric power generation units. Simultaneously, the load control unit 904 intelligently adjusts the power distribution to road electrical equipment based on the system's actual power generation capacity and preset priorities.

[0053] Example 2 This embodiment provides another road-domain multi-clean energy integrated and complementary power generation system. Its core lies in the optimized design for emergency power supply scenarios in temporary road construction areas in urban areas, which focuses on improving the system's rapid deployment capability, spatial adaptability, and power supply reliability.

[0054] Reference Figure 2 and Figure 11The piezoelectric power generation device 4 adopts a combination of a stepped arrangement of long-stroke two-stage pressure transmission levers 404 and PZT piezoelectric power generation unit 401 to adapt to potentially more uneven temporary road surface loads; the photovoltaic power generation device adopts a foldable photovoltaic panel composed of three photovoltaic panels 5 spliced ​​together, which can be quickly retracted and extended through a folding drive unit 506 composed of hinges and slide rails, reducing the working width and meeting the space occupation requirements of temporary road occupation construction.

[0055] like Figure 11 As shown, the long-stroke secondary pressure transmission lever 4044 has a long strip lever force transmission plate 40401 at its top, which bears the pressure transmitted by the pressure-bearing layer 2. Below the long strip lever force transmission plate 40401, a first thick lever main rod is connected. Its length is designed to increase sequentially forward, with two pairs of thick long-stroke lever main rods and fulcrum shafts 40306 installed in the middle, whose lengths decrease sequentially and extend backward. The stepped lever layout can achieve a larger initial lever arm and stroke, thereby more effectively capturing the impact and non-uniform loads brought by heavy engineering vehicles in the construction area. The lever fixing rod 40305 connects to the fulcrum shaft 40306 and is fixed to both sides of the protective shell 3.

[0056] like Figure 8 As shown, the flip-up buckle handle device 40108 can be quickly hoisted and removed as a whole after construction or during maintenance.

[0057] like Figure 4 As shown, the photovoltaic panel 5 is composed of three photovoltaic panels 5 joined together by hinges. Each of the three photovoltaic panels 5 is equipped with a folding drive unit 506 at its hinge point. Through a servo motor 802 and a linkage mechanism, the photovoltaic panels 5 on both sides are driven to fold backward according to control commands, reducing the width of the entire photovoltaic module and minimizing the area occupied during construction. A linear guide rail 505 is embedded at the bottom of the photovoltaic panel 5, which cooperates with the servo linear drive unit 503 at the top of the support adjustment column 6 to achieve overall pitch angle adjustment of the photovoltaic panel 5.

[0058] The dynamic coordination control method in this embodiment adds an emergency scenario strategy based on embodiment 1: The predictive calculation unit 902 of the dynamic coordination control module 10 pays special attention to the planned work schedule of the construction area. When the construction period is predicted, the energy dispatch unit 903 can instruct the folding drive unit 506 to retract the photovoltaic panel 5 to a safe state in advance, and may appropriately increase the sensitivity of the piezoelectric unit to capture the vibration energy unique to construction vehicles. The load control unit 904 dynamically adjusts the power supply priority to prioritize the power supply of lighting, warning lights and small tools at the construction site, ensuring construction safety and efficiency.

[0059] By employing a foldable photovoltaic panel 5, a long-stroke secondary pressure transmission lever 404, and a piezoelectric power generation device 4, this embodiment is adapted to emergency power supply scenarios in temporary road construction areas with limited space, special loads, and the need for rapid response to changes. Without sacrificing power generation capacity, it achieves rapid deployment, dismantling, and space release of the equipment, and through intelligent control algorithms, ensures uninterrupted power supply to critical loads during construction, demonstrating its adaptability and practicality.

[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A road-based multi-clean energy integrated and complementary power generation system, comprising a roadbed (1), characterized in that, It also includes a pressure-bearing layer (2) laid on the roadbed (1), a protective shell (3) is embedded in the pressure-bearing layer (2), piezoelectric generators (4) are arranged in the protective shell (3), and the piezoelectric generators (4) are located below the pressure-bearing layer (2). The piezoelectric generators (4) are arranged in an array in the protective shell (3). The vehicle load is transmitted to the piezoelectric generators (4) through the pressure-bearing layer (2). The piezoelectric generators (4) are used to convert the mechanical energy generated when the vehicle passes through into electrical energy. A photovoltaic power generation device is provided on the side of the roadbed (1), and it also includes a photovoltaic device control module (8), a dynamic coordination control module (10), and a piezoelectric power generation device control module (9); The photovoltaic device control module (8) is connected to the photovoltaic power generation device and is used to control its operation; the dynamic coordination control module (10) is electrically connected to the photovoltaic device control module (8) and the piezoelectric power generation device control module (9) respectively, and is used to realize the coordinated optimization and dynamic regulation of photovoltaic power generation and piezoelectric power generation. The piezoelectric power generation device (4) includes a pressure transmission lever (403), which is a three-stage pressure transmission lever, including a lever transmission plate (40301), a first-stage lever main rod (40302), a second-stage lever main rod (40303), a third-stage lever main rod (40304), a fulcrum shaft (40306), and a lever fixing rod (40305). The lever transmission plate (40301) is connected to the pressure-bearing layer (2). The lever fixing rod (40305) is fixed on both sides of the inner wall of the protective shell (3). There are multiple fulcrum shafts (40306), which are connected to the lever fixing rods (40305). The three pairs of lever main rods are located between the lever fixing rods (40305) on both sides, and each stage of lever main rod and lever fixing rod (40305) are hinged through the fulcrum shaft (40306). The three pairs of lever main rods form a stepped shape.

2. The road-area multi-clean energy integrated and complementary power generation system according to claim 1, characterized in that: The piezoelectric power generation device (4) further includes a pressure amplification hydraulic press (402) and a PZT piezoelectric power generation unit (401), wherein the pressure transmission lever (403), the pressure amplification hydraulic press (402) and the PZT piezoelectric power generation unit (401) are arranged sequentially from top to bottom; The top of the pressure transmission lever (403) is in contact with the pressure-bearing layer (2) to receive the vehicle load transmitted by the pressure-bearing layer (2); The pressure amplification hydraulic press (402) is connected to the bottom of the pressure transmission lever (403) via a ball joint type input piston (40201); The PZT piezoelectric power generation unit (401) is located at the bottom of the protective shell (3), and its input end is in contact with the pressure transmission piston (40204) of the pressure amplification hydraulic press (402) to generate electrical energy.

3. The road-area multi-clean energy integrated and complementary power generation system according to claim 2, characterized in that: The pressure amplification hydraulic press (402) includes: A ball-joint input piston (40201) is ball-jointly connected to the output end of the pressure transmission lever (403); A damping layer (40202), embedded on top of the ball-joint input piston (40201), is used to absorb and attenuate impact vibrations from the lever transmission plate (40301); The hydraulic chamber (40203) is truncated cone-shaped and filled with hydraulic oil. The pressure transmission piston (40204) is located at the bottom of the hydraulic chamber (40203) and is in contact with the PZT piezoelectric power generation unit (401) to transmit the hydraulically amplified pressure downward to the PZT piezoelectric power generation unit (401). A sealing ring (40205) is provided at the upper and lower openings of the hydraulic chamber (40203), and the sealing ring (40205) is a double-lip sealing ring. The inner and outer double lips of the sealing ring (40205) are respectively interference-fitted with the outer wall of the pressure transmission piston (40204) and the inner wall of the hydraulic chamber (40203).

4. A road-area multi-clean energy integrated and complementary power generation system according to claim 2, characterized in that: The piezoelectric power generation device (4) includes a long-stroke secondary pressure transmission lever (404) and a PZT piezoelectric power generation unit (401). The long-stroke secondary pressure transmission lever (404) is used to bear the pressure of the pressure-bearing layer and transmit the pressure to the PZT piezoelectric power generation unit (401), which converts the pressure into electrical energy. The long-stroke secondary pressure transmission lever (404) is arranged in a stepped manner.

5. A road-area multi-clean energy integrated and complementary power generation system according to claim 4, characterized in that: The PZT piezoelectric power generation unit (401) is equipped with buckle handle devices (40108) on both sides, and the buckle handle devices (40108) are embedded in the protective shell (3).

6. A road-area multi-clean energy integrated and complementary power generation system according to claim 1, characterized in that: The photovoltaic power generation device includes a photovoltaic panel (5), a support and adjustment column (6), and a water storage unit (7) connected sequentially from top to bottom. The support and adjustment column (6) supports and adjusts the angle of the photovoltaic panel (5). The water storage unit (7) is connected to the cleaning device (502) of the photovoltaic panel (5) through a pipe.

7. A road-area multi-clean energy integrated and complementary power generation system according to claim 6, characterized in that: The photovoltaic panel (5) includes: The photovoltaic panel body has a linear slide rail (504) embedded in its bottom along the central axis. A servo linear drive unit (503) is set at the center of the linear slide rail (504). The servo linear drive unit (503) includes a servo motor, a reduction mechanism, and a ball screw pair that converts rotational motion into linear motion. The housing of the servo linear drive unit (503) is connected to the linear slide rail (504) by bolts. The screw nut at its output end is connected to the hinge support on the back of the photovoltaic panel (5). The servo motor drives the screw to rotate, which drives the screw nut to reciprocate along the linear slide rail (504), thereby driving the photovoltaic panel (5) to adjust its pitch angle around its horizontal axis. A retractable photovoltaic cleaning sprinkler (501) is connected to the water storage unit (7) via a telescopic pipe (50104), and the retractable photovoltaic cleaning sprinkler (501) is located at the front end of the photovoltaic panel (5). The cleaning device (502) is symmetrically installed on the inner side of the frame on both sides of the photovoltaic panel (5) and connected to the photovoltaic panel (5) through a double-rail linear slide rail (50201).

8. A road-area multi-clean energy integrated and complementary power generation system according to claim 7, characterized in that: The retractable photovoltaic cleaning sprinkler (501) includes: Sprinkler actuator (50101) is used to perform sprinkler operations; The telescopic pipe (50104) is connected at both ends to the water spraying execution unit (50101) and the water storage unit (7), respectively. The telescopic pipe (50104), the water spraying execution unit (50101) and the water storage unit (7) form a closed water supply passage. An electrically controlled telescopic rod (50102) is installed above the telescopic tube (50104), and both its upper and lower ends are equipped with limit blocks; And a guide and limiting unit (50103) fitted in the middle of the telescopic tube (50104); When performing a watering task, the watering execution unit (50101) extends upward under the drive of the electrically controlled telescopic rod (50102) to perform the watering operation; when the cleaning task is completed, the electrically controlled telescopic rod (50102) moves in the opposite direction, causing the watering execution unit (50101) to retract axially and reset to a non-working state; the electrically controlled telescopic rod (50102) is controlled by the photovoltaic power generation main control unit (809) in the photovoltaic device control module (8) in combination with the built-in cleaning scheduling algorithm. The algorithm is based on the light intensity and photovoltaic panel surface pollution data collected by the sensor to decide and trigger the extension and retraction of the watering device.

9. A road-area multi-clean energy integrated and complementary power generation system according to claim 8, characterized in that: The cleaning device (502) includes: A double-rail linear slide rail (50201) is symmetrically installed on the inner side of the frame of the photovoltaic panel (5); A slider (50202) is embedded in the double-track linear slide rail (50201). The slider (50202) is equipped with a wringing roller assembly (50205) via a bracket. The wringing roller assembly (50205) includes two rollers (50203), which are rotatably connected to the two sliders (50202) respectively. The rollers (50203) pass through the slider (50202) and fix the two ends of the cleaning cloth (50204) through the two rollers (50203). When the slider (50202) moves the cleaning cloth (50204) to the end of the double-track linear slide rail (50201) and needs to be wrung out, the two rollers (50203) of the wrung-out roller group (50205) rotate in opposite directions to clamp and wind the cleaning cloth (50204), squeezing out the sewage and realizing the wrung-out operation of the cleaning cloth (50204); then it rotates in the opposite direction to release the wrung-out cleaning cloth (50204).

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