CN109910649B - Road surface non-stop charging system based on piezoelectric power generation technology - Google Patents
Road surface non-stop charging system based on piezoelectric power generation technology Download PDFInfo
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- CN109910649B CN109910649B CN201910214423.6A CN201910214423A CN109910649B CN 109910649 B CN109910649 B CN 109910649B CN 201910214423 A CN201910214423 A CN 201910214423A CN 109910649 B CN109910649 B CN 109910649B
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- 229910000831 Steel Inorganic materials 0.000 claims description 10
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- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 3
- 239000002033 PVDF binder Substances 0.000 claims description 3
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- 239000002131 composite material Substances 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- 238000007667 floating Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 239000005011 phenolic resin Substances 0.000 claims description 3
- 229920001568 phenolic resin Polymers 0.000 claims description 3
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 3
- 230000035882 stress Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
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- 238000006243 chemical reaction Methods 0.000 description 3
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The invention relates to a road surface non-stop charging system based on a piezoelectric power generation technology, which comprises a piezoelectric power generation module, an electric energy storage module, a road surface installation module and a vehicle charging module, wherein the piezoelectric power generation module is connected with the electric energy storage module; the piezoelectric power generation module and the electric energy storage module are both packaged in the pavement installation module, and the output end of the piezoelectric power generation module is electrically connected with the input end of the electric energy storage module; the pavement installation module and the vehicle charging module are both installed in the pavement structure surface layer, the output end of the vehicle charging module is exposed on the pavement structure surface, and the input end of the vehicle charging module is electrically connected with the output end of the electric energy storage module; the output end of the vehicle charging module is provided with an electric energy receiving part, and the electric energy receiving part is arranged on the vehicle and is electrically connected with a storage battery in the vehicle. The invention realizes the purpose of converting the recovered road surface mechanical energy into electric energy to charge the pure electric vehicle without stopping, and effectively solves the problems that the pure electric vehicle is limited by the battery capacity and is inconvenient to charge.
Description
Technical Field
The invention relates to a charging system, in particular to a road surface non-stop charging system based on a piezoelectric power generation technology.
Background
With the development of economy and industry, automobiles are gradually popularized, the traditional fuel oil automobiles consume huge amounts of petroleum, and exhaust gas contains a large amount of harmful gases, so that the air environment is seriously polluted. The new energy automobile is a current development trend, the pure electric automobile has no pollution and zero emission, which is a serious problem in the development of the new energy automobile, and the high-density and low-cost automobile energy storage battery is not commercially available all the time due to the limitation of the prior art, and the cruising mileage of the pure electric passenger car is broken through 300km; and the electric automobile is very troublesome to charge due to the limitation of the number, the distribution and the charging time of the charging piles.
Disclosure of Invention
The invention aims to solve the technical problems of providing a road surface non-stop charging system based on a piezoelectric power generation technology, and solves the problems that the endurance of a pure electric vehicle is limited by the battery capacity and the charging is inconvenient.
The technical scheme for solving the technical problems is as follows: a road surface non-stop charging system based on a piezoelectric power generation technology comprises a piezoelectric power generation module, an electric energy storage module, a road surface installation module and a vehicle charging module;
the piezoelectric power generation module and the electric energy storage module are both packaged in the pavement installation module, and the output end of the piezoelectric power generation module is electrically connected with the input end of the electric energy storage module;
the pavement installation module and the vehicle charging module are both installed in the pavement structure surface layer, the output end of the vehicle charging module is exposed on the pavement structure surface, and the input end of the vehicle charging module is electrically connected with the output end of the electric energy storage module;
the output end of the vehicle charging module is provided with an electric energy receiving part, and the electric energy receiving part is arranged on the vehicle and is electrically connected with a storage battery in the vehicle.
On the basis of the technical scheme, the invention can be improved as follows.
Further, the piezoelectric power generation module includes a plurality of piezoelectric transducers arranged in an array form, each of the piezoelectric transducers including a stress member and a piezoelectric vibrator mounted inside the stress member, the piezoelectric vibrator being composed of a PZT piezoelectric ceramic material or a PVDF piezoelectric composite material.
Further, the electric energy storage module comprises a rectifying circuit, a voltage regulating circuit, an energy storage circuit and a charge-discharge control circuit, each piezoelectric vibrator of the piezoelectric transducer is electrically connected with the input end of the rectifying circuit, the output end of the rectifying circuit is electrically connected with the input end of the voltage regulating circuit, the output end of the voltage regulating circuit is electrically connected with the input end of the energy storage circuit through the charge-discharge control circuit, and the output end of the energy storage circuit is electrically connected with the input end of the vehicle charging module through the charge-discharge control circuit.
Further, the road surface installation module comprises a rigid installation base and a rigid movable cover cap component, a cavity is formed in the rigid installation base and the rigid movable cover cap component, the piezoelectric power generation module and the electric energy storage module are packaged in the cavity, and the rigid movable cover cap component can be installed on the upper portion of the rigid installation base in a vertically floating mode.
Further, the vehicle charging module includes a road surface mounting part and an electric power transmission part mounted on the road surface mounting part, and an electric power receiving part mounted on the vehicle.
Further, the pavement installation part is a rectangular component made of engineering plastic PA66 or phenolic resin, and is embedded in the pavement structure; the electric energy transmission component is a conductive steel rail with a mounting support and a shunt cable at the bottom, the shunt cable is mounted in the mounting support, the electric energy transmission component is inlaid in the pavement mounting component, and the top of the conductive steel rail is exposed on the surface of the pavement structure; the electric energy receiving component is specifically a contact brush with an inversion function.
The beneficial effects of the invention are as follows: the road surface non-stop charging system based on the piezoelectric power generation technology converts mechanical energy of a vehicle acting on a road surface into electric energy by using the piezoelectric power generation technology, and then uses the generated electric energy to drive and supply power for the vehicle, so that the energy loss of the vehicle on the road surface is effectively reduced, the energy utilization efficiency is improved, and the road surface non-stop charging system is a novel energy-saving road surface; meanwhile, the method and the device realize that the recovered pavement mechanical energy is converted into electric energy to charge the pure electric vehicle without stopping, and effectively solve the problem that the endurance of the pure electric vehicle is limited by the battery capacity and the problem of troublesome charging.
Drawings
FIG. 1 is a schematic diagram of a road surface non-stop charging system based on piezoelectric power generation technology;
FIG. 2 is a schematic diagram of a piezoelectric transducer in a piezoelectric power generation module;
FIG. 3 is a block diagram of an electrical energy storage module;
FIG. 4 is a top view of the pavement mounting module;
FIG. 5 is a cross-sectional view of a pavement mounting module;
FIG. 6 is a cross-sectional view of a pavement installation of a pavement non-stop charging system based on piezoelectric power generation technology of the present invention;
FIG. 7 is a schematic diagram of a vehicle charging module;
fig. 8 is a layout diagram of a road surface non-stop charging system based on a piezoelectric power generation technology in a road cross section.
In the drawings, the list of components represented by the various numbers is as follows:
11. the piezoelectric vibrator comprises a stress component, 12, a piezoelectric vibrator, 21, a first electric energy storage module accommodating cavity, 22, a second electric energy storage module accommodating cavity, 23, a piezoelectric power generation module accommodating cavity, 3, a rigid component, 31, a rigid mounting base, 32, a rigid movable cap component, 33, a pressure head, 4, a conductive steel rail, 51, a rectifying circuit, 52, a voltage regulating circuit, 53, an energy storage circuit, 54, a charge-discharge control circuit, 6, a mounting support, 7, a shunt cable, 8 and a contact brush.
Detailed Description
The principles and features of the present invention are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the invention and are not to be construed as limiting the scope of the invention.
As shown in fig. 1, a road surface non-stop charging system based on a piezoelectric power generation technology comprises a piezoelectric power generation module, an electric energy storage module, a road surface installation module and a vehicle charging module;
the piezoelectric power generation module and the electric energy storage module are both packaged in the pavement installation module, and the output end of the piezoelectric power generation module is electrically connected with the input end of the electric energy storage module;
the pavement installation module and the vehicle charging module are both installed in the pavement structure surface layer, the output end of the vehicle charging module is exposed on the pavement structure surface, and the input end of the vehicle charging module is electrically connected with the output end of the electric energy storage module;
the output end of the vehicle charging module is provided with an electric energy receiving part, and the electric energy receiving part is arranged on the vehicle and is electrically connected with a storage battery in the vehicle.
In the present invention:
the piezoelectric power generation module comprises a plurality of piezoelectric transducers arranged in an array form, the structure of the piezoelectric transducers is shown in fig. 2, each piezoelectric transducer comprises a stress member 11 and a piezoelectric vibrator 12 arranged inside the stress member 11, and the piezoelectric vibrator 12 is made of a PZT piezoelectric ceramic material or a PVDF piezoelectric composite material. In this embodiment, the stress member 11 is internally provided with a plurality of (even number of) piezoelectric vibrators 12, and the plurality of piezoelectric vibrators are stacked in positive and negative parallel (i.e., the positive electrodes of all the piezoelectric vibrators are connected together, and the negative electrodes of all the piezoelectric vibrators are connected together), so that the stress member has the advantages of long service life, high impact load resistance and high power-to-electricity conversion efficiency.
Fig. 3 is a schematic circuit block diagram of an electrical energy storage module, where the electrical energy storage module includes a rectifying circuit 51, a voltage-regulating circuit 52, an energy storage circuit 53 and a charge-discharge control circuit 54, each piezoelectric vibrator of the piezoelectric transducer is electrically connected with an input end of the rectifying circuit 51, an output end of the rectifying circuit 51 is electrically connected with an input end of the voltage-regulating circuit 52, an output end of the voltage-regulating circuit 52 is electrically connected with an input end of the energy storage circuit 53 through the charge-discharge control circuit 54, and an output end of the energy storage circuit 53 is electrically connected with an input end of the vehicle charging module through the charge-discharge control circuit 54. The piezoelectric power generation module converts impact load generated by a vehicle into a pulse electric signal, the pulse electric signal is converted into a direct current signal through the rectifying circuit 51, the direct current signal is converted into a low-voltage signal through the voltage regulating circuit 52 and is stored in the energy storage circuit 53, the energy storage circuit 53 finally discharges the vehicle charging module, and the charging and discharging process of the energy storage circuit 53 is controlled by the charging and discharging control circuit 54 to prevent the energy storage element in the energy storage circuit 53 from being damaged due to overcharge or overdischarge. In this embodiment, the specific circuit structures and connection relationships of the rectifying circuit 51, the voltage regulating circuit 52 and the energy storage circuit 53 are well known to those skilled in the art, for example, the rectifying circuit 51 may be a pulse rectifier, the voltage regulating circuit 52 may be a voltage stabilizer, the energy storage circuit 53 may be a storage battery or an energy storage capacitor, and the charge/discharge control circuit 54 may be a storage battery charge/discharge controller or a super capacitor charge/discharge controller. The rectifying circuit 51 and the voltage regulating circuit 52 of the electric energy storage module are individually packaged, and the energy storage circuit 53 is individually packaged, so that the later maintenance is facilitated.
The structure of the pavement installation module is shown in fig. 4 and 5, the pavement installation module comprises a rigid member 3 with a cap structure, a cavity is arranged in the rigid member 3, and the piezoelectric power generation module and the electric energy storage module are packaged in the cavity. The rigid member 3 includes a rigid mounting base 31 and a rigid movable cap member 32, cavities are provided in the rigid mounting base 31 and the rigid movable cap member 32, the piezoelectric power generation module and the electric energy storage module are packaged in the cavities, the rigid movable cap member 32 is mounted on the upper portion of the rigid mounting base 31 in a vertically floating manner, and the rigid movable cap member 32 can move up and down within a preset range to transfer the load of the vehicle to the road surface to the piezoelectric power generation module. Specifically, the cavity includes a first electric energy storage module accommodating cavity 21, a second electric energy storage module accommodating cavity 22 and a piezoelectric power generation module accommodating cavity 23, the first electric energy storage module accommodating cavity 21 and the second electric energy storage module accommodating cavity 22 are arranged in a rigid mounting base 31, the piezoelectric power generation module accommodating cavity 23 is arranged in a rigid movable cap member 32, and a pressure head 33 opposite to the piezoelectric power generation module accommodating cavity 23 is arranged on the rigid mounting base 31. The piezoelectric power generation module is installed in the piezoelectric power generation module accommodating cavity 23, the energy storage circuit 53 of the electric energy storage module is installed in the second electric energy storage module accommodating cavity 22, and the rectifying circuit 51 and the voltage regulating circuit 52 of the electric energy storage module are installed in the first electric energy storage module accommodating cavity 21 after being packaged. The whole pavement installation module is formed by processing PA nylon or other engineering plastics with high strength, high rigidity, good toughness, wear resistance and corrosion resistance.
As shown in fig. 6 and 7, the vehicle charging module includes a road surface mounting part and an electric power transmission part mounted on the road surface mounting part, and an electric power receiving part mounted on the vehicle. The pavement installation component is a rectangular component which is made of engineering plastic PA66 or phenolic resin and has high strength, corrosion resistance, ageing resistance and insulation, and is parallelly and continuously embedded in a pavement structure (the pavement structure in FIG. 6 specifically comprises a bottommost layer which is a pavement base layer, a middle layer which is a pavement base layer and a top layer which is a pavement structure surface layer); the electric energy transmission component is a conductive steel rail 4, the bottom of which is provided with a mounting support 6, a charge-discharge control circuit 54 and a shunt cable 7, the charge-discharge control circuit 54 and the shunt cable 7 are arranged in the mounting support 6, the electric energy transmission component is embedded in the pavement mounting component, the top of the conductive steel rail 4 is exposed on the surface of the pavement structure, the bottom of the conductive steel rail 4 is connected with the charge-discharge control circuit 54, and the charge-discharge control circuit 54 is electrically connected with the output end of the electric energy storage module through the shunt cable 7; the conductive rail 4 is a metal rail having wear resistance and excellent conductivity. The electric energy receiving component is specifically provided with a contact brush 8 with an inversion function, and the contact brush 8 can convert and store the received electric signals into a storage battery in a vehicle; an inverter may be provided to the wiper 8, and the wiper 8 may be electrically connected to a battery inside the vehicle through the inverter; in addition, the contact brush 8 is installed on the vehicle, and when the contact brush 8 contacts the conductive steel rail 4, charging can be realized. In addition, the electrifying state of the conductive steel rail 4 can be controlled by a charge-discharge control circuit, a charge-discharge control circuit switch is arranged on the charge-discharge control circuit, when a vehicle runs in a range of a charging road surface, the charge-discharge control circuit switch is triggered to be started, the energy storage module transmits electricity to the electric energy transmission component, and the electric energy receiving component receives electricity through contact with the electric energy transmission component so as to realize charging of the vehicle; when the vehicle is charged, the vehicle drives off the charging road surface, the charging and discharging control switch is closed, the power transmission part is powered off, and preparation is made for the next charging, so that the energy saving purpose is achieved.
FIG. 8 is a road cross-sectional layout view of a road surface non-stop charging system based on piezoelectric power generation technology according to the present invention; the road surface installation modules and the vehicle charging modules are respectively installed on different lanes, and the plurality of groups of road surface installation modules are connected in parallel through cables and then connected with the vehicle charging modules. Specifically, the road surface mounting module is arranged in the wheel track area of the lane A, B (energy collecting lane) and is arranged according to a certain array, and the vehicle charging module is arranged in the center of the left and right wheel track areas of the lane C (no-stop charging lane); the vehicle can produce impact load to load transfer device when traveling on the road surface, and road surface installation module is the rigidity block structure, can transmit to piezoelectricity power generation module after amplifying vehicle heavy load, realizes the conversion of mechanical energy to electric energy. The pavement installation module is internally provided with a cavity structure and is provided with a piezoelectric transduction device and an energy storage device. The mechanical energy generated by the vibration of the vehicle is converted into electric energy through the piezoelectric transducer and then is transmitted to the electric energy storage module, the electric energy storage module is connected with the vehicle charging module through a cable, and after the vehicle is driven into a charging road surface area, the load induction switch is turned on, and the electric energy storage module discharges to the vehicle charging module; when the vehicle needs to be charged, the vehicle enters the charging lane, the vehicle stretches out of the contact brush to be in contact with the electrified guide rail, electric energy is transmitted to an inverter in the vehicle after passing through the electrified guide rail and the contact brush, and power is supplied to the vehicle storage battery after inversion, so that the electric vehicle can be charged without stopping by converting recovered road mechanical energy into electric energy. Because the piezoelectric power generation module is limited by the technology at present, the energy conversion efficiency is lower, a plurality of energy collection lanes can be arranged, and the collected road surface energy is collected to the vehicle charging lane to supply power for the charging vehicle.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (1)
1. Road surface does not stop charging system based on piezoelectricity electricity generation technique, its characterized in that: the system comprises a piezoelectric power generation module, an electric energy storage module, a road surface installation module and a vehicle charging module;
the piezoelectric power generation module and the electric energy storage module are both packaged in the pavement installation module, and the output end of the piezoelectric power generation module is electrically connected with the input end of the electric energy storage module;
the pavement installation module and the vehicle charging module are both installed in the pavement structure surface layer, the output end of the vehicle charging module is exposed on the pavement structure surface, and the input end of the vehicle charging module is electrically connected with the output end of the electric energy storage module;
the output end of the vehicle charging module is provided with an electric energy receiving part, and the electric energy receiving part is arranged on the vehicle and is electrically connected with a storage battery in the vehicle;
the piezoelectric power generation module comprises a plurality of piezoelectric transducers arranged in an array form, each piezoelectric transducer comprises a stress member and a piezoelectric vibrator arranged in the stress member, and the piezoelectric vibrator is made of a PZT piezoelectric ceramic material or a PVDF piezoelectric composite material;
the electric energy storage module comprises a rectifying circuit, a voltage regulating circuit, an energy storage circuit and a charge-discharge control circuit, wherein the piezoelectric vibrator of each piezoelectric transducer is respectively and electrically connected with the input end of the rectifying circuit, the output end of the rectifying circuit is electrically connected with the input end of the voltage regulating circuit, the output end of the voltage regulating circuit is electrically connected with the input end of the energy storage circuit through the charge-discharge control circuit, and the output end of the energy storage circuit is electrically connected with the input end of the vehicle charging module through the charge-discharge control circuit;
the pavement installation module comprises a rigid installation base and a rigid movable cap component, wherein cavities are formed in the rigid installation base and the rigid movable cap component, the piezoelectric power generation module and the electric energy storage module are packaged in the cavities, and the rigid movable cap component can be arranged on the upper part of the rigid installation base in a vertically floating mode;
the vehicle charging module comprises a road surface installation part, an electric energy transmission part and an electric energy receiving part, wherein the electric energy transmission part is installed on the road surface installation part;
the pavement installation part is a rectangular component made of engineering plastic PA66 or phenolic resin, and is embedded in the pavement structure; the electric energy transmission component is a conductive steel rail with a mounting support and a shunt cable at the bottom, the shunt cable is mounted in the mounting support, the electric energy transmission component is inlaid in the pavement mounting component, and the top of the conductive steel rail is exposed on the surface of the pavement structure; the electric energy receiving component is specifically a contact brush with an inversion function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910214423.6A CN109910649B (en) | 2019-03-20 | 2019-03-20 | Road surface non-stop charging system based on piezoelectric power generation technology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910214423.6A CN109910649B (en) | 2019-03-20 | 2019-03-20 | Road surface non-stop charging system based on piezoelectric power generation technology |
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| CN109910649A CN109910649A (en) | 2019-06-21 |
| CN109910649B true CN109910649B (en) | 2024-04-12 |
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| CN114379390B (en) * | 2022-01-12 | 2024-07-12 | 李世国 | Charging system and charging method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060055419A (en) * | 2005-12-20 | 2006-05-23 | 김종수 | The generator for road |
| CN205231822U (en) * | 2015-12-09 | 2016-05-11 | 上海浦兴路桥建设工程有限公司 | A pressure generation system for road |
| CN107386139A (en) * | 2017-07-18 | 2017-11-24 | 武汉理工大学 | Pressure electricity-generating damping type deceleration strip |
| CN209955780U (en) * | 2019-03-20 | 2020-01-17 | 武汉市政工程设计研究院有限责任公司 | Pavement non-stop charging system based on piezoelectric power generation technology |
-
2019
- 2019-03-20 CN CN201910214423.6A patent/CN109910649B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060055419A (en) * | 2005-12-20 | 2006-05-23 | 김종수 | The generator for road |
| CN205231822U (en) * | 2015-12-09 | 2016-05-11 | 上海浦兴路桥建设工程有限公司 | A pressure generation system for road |
| CN107386139A (en) * | 2017-07-18 | 2017-11-24 | 武汉理工大学 | Pressure electricity-generating damping type deceleration strip |
| CN209955780U (en) * | 2019-03-20 | 2020-01-17 | 武汉市政工程设计研究院有限责任公司 | Pavement non-stop charging system based on piezoelectric power generation technology |
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