A contact-type friction nano-power generation device and a vehicle charging system composed of the same

Abstract

The contact-type friction nano power generation device of the present invention and the vehicle charging system composed of the device include an upper substrate, a lower substrate, a support column and a return spring. An upper rubber pad, an upper ABS plate, an upper conductive copper foil and a PET film are arranged in sequence from top to bottom below the upper substrate, and a lower rubber pad, a lower ABS plate, a lower conductive copper foil and a polyimide film are arranged in sequence from bottom to top above the lower substrate; the upper conductive copper foil and the lower conductive copper foil are respectively connected with positive and negative leads. The vehicle charging system includes a highway, an electric car, an energy collection device and a contact-type friction nano power generation device. The contact-type friction nano power generation device of the present invention has a stable and impact-resistant structure because it uses upper and lower substrates, upper and lower rubber pads and upper and lower ABS plates to protect the conductive copper foil, the PET film and the polyimide film, and is suitable for being installed on a highway to generate electricity using the rolling load generated by a moving vehicle.

Description

Technical Field

[0001] The present invention relates to a power generation device and a vehicle charging system composed of the same, and more specifically, to a contact-type friction nano power generation device and a vehicle charging system composed of the same. Background Art

[0002] As a region rich in mechanical energy, if the mechanical energy generated in such a huge road system in my country is collected and reused, it will not only achieve higher economic and social benefits, but also conform to the country's concept of green, low-carbon and sustainable development. Based on this, the research on converting mechanical energy in roads into electrical energy with the help of piezoelectric materials has attracted the attention of many scholars. Storing the converted electrical energy for charging electric vehicles also has certain practical significance for alleviating my country's increasingly serious energy pressure.

[0003] Commonly used piezoelectric materials such as piezoelectric ceramics are generally insulators. Although compressing or bending piezoelectric ceramics can also produce changes in electric potential, the piezoelectric ceramics themselves cannot form a metal-semiconductor interface with rectification characteristics with metals, so the transition process from charge accumulation to release cannot be achieved. Nowadays, almost all conventional piezoelectric materials used as power sources to achieve charge accumulation require a complex and cumbersome external circuit, and it is still difficult to miniaturize the device. In addition, burying larger energy collection devices in the road also has a certain adverse effect on the road surface itself, which may cause cracks, peeling and other defects in the road surface, reducing the service life of the road.

[0004] In summary, the use of conventional materials as piezoelectric materials for road energy collection and powering electric vehicles is not promising. To solve the above problems, the present invention proposes a contact-type friction nano-power generation device and a vehicle charging system composed thereof. Summary of the invention

[0005] In order to overcome the disadvantages of the above technical problems, the present invention provides a contact-type friction nano-power generation device and a vehicle charging system composed of the same.

[0006] The contact-type friction nano power generation device of the present invention comprises an upper substrate, a lower substrate, a support column and a return spring. The upper substrate and the lower substrate are arranged parallel to each other, the lower end of the support column is fixed on the lower substrate, a groove is opened on the lower surface of the upper substrate, the upper end of the support column is inserted into the groove of the upper substrate, and the return spring is located at the periphery of the support column; the characteristic is that: an upper rubber pad, an upper ABS plate, an upper conductive copper foil and a PET film are arranged in sequence from top to bottom below the upper substrate, and a lower rubber pad, a lower ABS plate, a lower conductive copper foil and a polyimide film are arranged in sequence from bottom to top above the lower substrate; when the upper substrate is not subjected to external load, a gap is formed between the PET film and the polyimide film, and when the upper substrate is subjected to external load, the PET film and the polyimide film are charged by contact friction; the upper conductive copper foil and the lower conductive copper foil are respectively connected with a positive electrode lead and a negative electrode lead for outputting the charge generated by the contact friction as electric energy.

[0007] In the contact-type friction nano-power generation device of the present invention, the periphery of the portion between the upper substrate and the lower substrate is wrapped with a vulcanized organic silicone rubber layer.

[0008] The vehicle charging system composed of the contact-type friction nano-power generation device of the present invention comprises an expressway, an electric vehicle, an energy collection device and a contact-type friction nano-power generation device. The contact-type friction nano-power generation devices are arranged at intervals below the rutting area of ​​each lane of the expressway, the energy collection device is arranged at the central position of the middle lane, and a charging receiver is arranged at the bottom of the electric vehicle; the positive lead and the negative lead of the contact-type friction nano-power generation device are connected to the power input end of the energy collection device via a connecting wire buried in the road, and a charging transmitter matched with the charging receiver at the bottom of the electric vehicle is arranged in the energy collection device.

[0009] The vehicle charging system composed of the contact-type friction nano power generation device of the present invention comprises a metal shell and a battery pack, a rectifier filter circuit board, a single-chip control circuit board, a relay circuit board, an inductive sensor and a charging transmitter arranged in the inner cavity of the metal shell. A tempered glass plate is arranged on the top of the metal shell to seal the inner cavity. The charging transmitter is located at the uppermost end of the inner cavity of the metal shell, and the inductive sensor is located below the charging transmitter.

[0010] The power input end of the rectifier and filter circuit board is connected to the positive lead and the negative lead of the contact friction nano power generation device through the power transmission line, the power output end of the rectifier and filter circuit is connected to the positive and negative poles of the power supply of the battery pack, and the positive and negative poles of the power supply of the battery pack are connected to the power input end of the charging transmitter through the normally open point of the relay in the relay circuit board; the output end of the inductive sensor is connected to the signal input end of the single-chip microcomputer in the single-chip microcomputer control circuit board, and the control end of the relay in the relay circuit board is connected to the output end of the single-chip microcomputer in the single-chip microcomputer control circuit board; the single-chip microcomputer detects whether there is an electric vehicle passing by the upper end through the inductive sensor, and the single-chip microcomputer controls the charging transmitter to output power to the outside by controlling the relay in the relay circuit board.

[0011] The beneficial effects of the present invention are as follows: the contact-type friction nano-power generation device of the present invention is provided with an upper substrate, a lower substrate, a support column and a return spring; an upper rubber pad, an upper ABS board, an upper conductive copper foil and a PET film are arranged in sequence below the upper substrate; a lower rubber pad, a lower ABS board, a lower conductive copper foil and a polyimide film are arranged in sequence above the lower substrate; the rubber pad and the ABS board effectively ensure the insulation of the conductive copper foil from the outside; by utilizing the characteristic that the electron-receiving ability of the PET film is weaker than that of the polyimide film, when the upper substrate is subjected to a load so that the PET film and the polyimide film are in contact-type friction, the PET film is positively charged and the polyimide film is negatively charged; after the load is removed, the electric energy formed by the potential difference between the PET film and the polyimide film is output through the positive and negative leads, thereby realizing contact-type friction power generation; at the same time, since the upper and lower substrates, the upper and lower rubber pads and the upper and lower ABS boards are used to protect the conductive copper foil, the PET film and the polyimide film, the device has a stable and impact-resistant structure, and is suitable for being installed on a highway to generate electricity by utilizing the rolling load generated by running vehicles.

[0012] The vehicle charging system composed of the contact-type friction nano-power generation device of the present invention has contact-type friction nano-power generation devices arranged at intervals under the ruts of each lane on the highway, an energy collection device arranged in the center of the middle lane, and a battery pack, a rectifier filter circuit board, a single-chip control circuit board, a relay circuit board, a charging transmitter, and an inductive sensor arranged in the energy collection device. The electric energy generated by the running vehicle running over the contact-type friction nano-power generation device is input into the rectifier filter circuit board for rectification and filtering, and then stored in the battery pack. When the microcontroller (single-chip microcomputer) in the single-chip control circuit board detects through the inductive sensor that a charged electric vehicle is passing above, the relay in the relay circuit board is controlled to connect the positive and negative poles of the power output of the battery pack with the charging transmitter, so that the charging transmitter supplies power to the charging receiver on the electric vehicle, thereby realizing the charging of the electric vehicle in the driving state. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1It is a schematic diagram of the principle of the contact-type friction nano power generation device of the present invention;

[0014] Figure 2 A three-dimensional diagram of the contact-type friction nano power generation device of the present invention;

[0015] Figure 3 for Figure 2 A partial enlarged view of the middle A area;

[0016] Figure 4 This is a schematic diagram of the structure of the contact-type friction nano-power generation device of the present invention after a vulcanized organic silicon rubber layer is provided;

[0017] Figure 5 A schematic diagram of the three-dimensional structure of a vehicle charging system composed of a contact-type friction nano-power generation device of the present invention;

[0018] Figure 6 for Figure 5 A partial enlarged view of the middle B area;

[0019] Figure 7 A schematic diagram of the top view of the vehicle charging system composed of the contact-type friction nano-power generation device of the present invention;

[0020] Figure 8 A schematic diagram of the forward structure of a vehicle charging system formed by the contact-type friction nano-power generation device of the present invention;

[0021] Fig. 9 A schematic diagram of a vehicle charging system composed of a contact-type friction nano-power generation device of the present invention;

[0022] Fig.10 It is a schematic diagram of the structure of the energy collection device in the present invention.

[0023] In the figure: 1 upper friction material layer, 2 lower friction material layer, 3 upper substrate, 4 lower substrate, 5 support column, 6 return spring, 7 upper rubber pad, 8 lower rubber pad, 9 upper ABS plate, 10 lower ABS plate, 11 upper conductive copper foil, 12 lower conductive copper foil, 13 PET film, 14 polyimide film, 15 gap, 16 positive lead, 17 negative lead, 18 expressway, 19 lane, 20 contact friction nano power generation device, 21 energy collection device, 22 battery pack, 23 relay circuit board, 24 charging transmitter, 25 electric vehicle, 26 charging receiver, 27 single-chip microcomputer control circuit board, 28 inductive sensor, 29 metal shell, 30 tempered glass plate, 31 rectifier filter circuit board, 32 slot-shaped inner cavity, 33 connecting wire, 34 electric energy conduction line, 35 vulcanized silicone rubber layer. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0025] like Figure 1 As shown in FIG. 1 , a schematic diagram of the principle of the contact-type friction nano-power generation device of the present invention is given. The contact-type friction nano-power generation device can generate electricity because it uses two friction material layers with different electronegativity, such as Figure 1 As shown in the figure, before the external load is applied, the two contact friction material layers (upper friction material layer 1 and lower friction material layer 2) are in a separated state, and there is no polarized charge between the two, so there is no potential difference between the upper and lower electrodes. When there is an external load, the two contact friction material layers contact each other and contact friction occurs, and charge transfer occurs between the two. When the external load is removed, the two contact friction material layers return to a separated state. At this time, there are polarized charges in the two materials that cannot be neutralized, and a potential difference is formed between the two. In order to balance the potential difference, the metal electrodes on the back of the two contact friction layer materials will induce opposite charges, and the upper and lower metal electrodes are connected by wires to form a path. Therefore, the charges on the two electrodes are affected by the potential difference and flow in the wires to form a current. When the load is continuously applied and removed, periodic power output will be performed.

[0026] like Figure 2 As shown, a stereoscopic diagram of the contact-type friction nano-power generation device of the present invention is given. Figure 3 Given Figure 2 The partial enlarged view of the middle A area shows that the contact-type friction nano power generation device 20 is composed of an upper substrate 3, a lower substrate 4, a support column 5, a return spring 6, an upper rubber pad 7, a lower rubber pad 8, an upper ABS plate 9, a lower ABS plate 10, an upper conductive copper foil 11, a lower conductive copper foil 12, a PET film 13, and a polyimide film 14. The number of support columns 5 shown is 4, and the lower ends of the four support columns 5 are fixed to the four corners of the upper surface of the lower substrate 4. Grooves are provided on the four corners of the lower surface of the upper substrate 3, and the upper ends of the support columns 5 are inserted into the grooves of the upper substrate 3 so that the upper substrate 3 and the lower substrate 4 can move relative to each other at a certain distance. A return spring 6 is provided on the periphery of each support column 5. After the external load (car wheel) is applied to the upper substrate 3, the upper substrate 3 and the lower substrate 4 are brought close to each other. After the load is removed, the upper substrate 3 returns to its original position under the action of the return spring 6. The upper base plate 3 and the lower base plate 4 are made of acrylic material to ensure that they have good strength and wear resistance when they are set on the ground of the highway 18.

[0027] As shown, an upper rubber pad 7, an upper ABS board 9, an upper conductive copper foil 11 and a PET film 13 are arranged in sequence from top to bottom below the upper substrate 3, and a lower rubber pad 8, a lower ABS board 10, a lower conductive copper foil 12 and a polyimide film 14 are arranged in sequence from bottom to top above the lower substrate 4; the upper conductive copper foil 11 is connected to a positive electrode lead 16, and the lower conductive copper foil 12 is connected to a negative electrode lead 17. Since the electron-acquiring ability of the PET film 13 is weaker than that of the polyimide film 14, when the upper substrate 3 is subjected to a load so that the PET film 13 and the polyimide film 14 are in contact and friction, the PET film 13 is positively charged and the polyimide film 14 is negatively charged. After the load is removed, the positively charged PET film 13 makes the upper conductive copper foil 11 in contact with it positively charged, and the negatively charged polyimide film 14 makes the lower conductive copper foil 12 in contact with it pad. In this way, an electric potential difference is formed between the upper conductive copper foil 11 and the lower conductive copper foil 12, and electric energy can be output through the positive lead 16 and the negative lead 17.

[0028] Since the upper ABS board 9 and the upper rubber pad 7 are arranged above the upper conductive copper foil 11, and the lower ABS board 10 and the lower rubber pad 8 are arranged below the lower conductive copper foil 12, the insulation of the upper side of the upper conductive copper foil 11 and the lower side of the lower conductive copper foil 12 is effectively guaranteed. In order to ensure good insulation around, a vulcanized silicone rubber layer 35 is arranged on the periphery of the area between the upper substrate 3 and the lower substrate 4, such as Figure 4 As shown, a schematic diagram of the structure of the contact-type friction nano-power generation device of the present invention after a vulcanized organic silicone rubber layer is provided is given.

[0029] After the contact friction nano-power generation device 20 of the present invention is installed on a highway, the moving vehicles can perform contact friction power generation by continuously applying pressure and releasing pressure on the upper substrate 3, and the generated electric energy can be collected and stored to charge the moving electric vehicle.

[0030] like Figure 5 , Figure 7 , Figure 8 and Fig. 9 As shown, a three-dimensional structural schematic diagram, a top structural schematic diagram, a forward structural schematic diagram and a principle diagram of a vehicle charging system composed of a contact-type friction nano-power generation device of the present invention are respectively given, Figure 6 Given Figure 5The enlarged view of the middle B area shows that contact-type friction nano-power generation devices 20 are arranged at intervals in the rutted parts of the lane 19 of the highway 18 so that the wheels of the moving vehicles can apply loads to the contact-type friction nano-power generation devices 20 to generate electricity; an energy collection device 21 is arranged in the center of the middle lane, and the contact-type friction nano-power generation device 20 is connected to the energy collection device 21 via an electric energy transmission line 34 so that the electric energy generated by the contact-type friction nano-power generation device 20 can be stored in the energy collection device 21, and the stored electric energy can be used to charge the electric vehicle 25 under the control of the energy collection device 21.

[0031] The energy collection device 21 is provided with a charging transmitter 24, and a charging receiver 26 is provided at the bottom of the electric vehicle 25. After the electromagnetic induction signal or magnetic resonance signal emitted by the charging transmitter 24 is received by the charging receiver 26, the charging receiver 26 converts the received signal into electric energy to charge the electric vehicle during driving. The energy transmission between the charging transmitter 24 and the charging receiver 26 adopts electromagnetic induction or magnetic resonance. Khurram Afridi, an associate professor at the University of Tokyo, BYD Company and Cornell University, has disclosed the charging technology for mobile vehicles.

[0032] like Fig.10 As shown, a schematic diagram of the structure of the energy collection device in the present invention is given. The energy collection device 21 shown is arranged along the center of the middle lane, and the number of the energy collection device 21 is also multiple. The energy collection device 21 is composed of a metal shell 29 and a battery pack 22, a relay circuit board 23, a single-chip control circuit board 27, a rectifier filter circuit board 31, an inductive sensor 28 and a charging transmitter 24 arranged in the internal cavity of the metal shell 29. The interior of the metal shell 29 is a groove-shaped cavity 32, and the groove-shaped cavity 32 is used to accommodate various circuit boards and components. The uppermost end of the metal shell 29 is provided with a tempered glass plate 30 for sealing its internal cavity. The tempered glass plate 30 has good strength and wear resistance and will not be damaged after long-term use on the road surface.

[0033] The positive lead 16 and the negative lead 17 of the contact-type friction nano-power generation device 20 are connected to the power input end of the rectifier filter circuit board 31 through the power transmission line 34 through the connecting wire 33, and the output end of the rectifier filter circuit board 31 is connected to the positive and negative poles of the power supply of the battery pack 22 through the connecting wire. In this way, the power generated by the contact-type friction nano-power generation device 20 is input and stored in the battery pack 22 after being rectified and filtered by the rectifier filter circuit board 31. The positive and negative poles of the power supply of the battery pack 22 are connected to the power input end of the charging transmitter 24 through the normally open point in the relay circuit board 23, and the control end of the relay in the relay circuit board 23 is connected to the output end of the single-chip microcomputer in the single-chip microcomputer circuit board 27. In this way, under the control of the control signal sent by the single-chip microcomputer 27, the power supply end of the battery pack 22 can be connected to the charging transmitter 24 through the relay, so that the charging transmitter 24 can supply power to the outside.

[0034] The charging transmitter 24 is arranged at the uppermost end of the inner cavity of the metal shell 29, and the inductive sensor 28 is arranged below the charging transmitter 24. The signal output end of the inductive sensor 28 is connected to the input end of the single-chip microcomputer in the single-chip microcomputer control circuit board 27. The inductive sensor 28 can be a ground sensing coil for detecting whether a vehicle passes by. The single-chip microcomputer control circuit board 27 detects whether an electric vehicle has driven (or is about to drive) above the charging transmitter 24 through the inductive sensor 28. If it is detected that an electric vehicle has driven (or is about to drive) above the charging transmitter 24, the control relay circuit board 23 connects the power output end of the battery pack 22 with the charging transmitter 24 to realize charging of the electric vehicle.

Claims

1. A contact-type friction nano power generation device, comprising an upper substrate (3), a lower substrate (4), a support column (5) and a return spring (6), wherein the upper substrate and the lower substrate are arranged parallel to each other, the lower end of the support column is fixed to the lower substrate, a groove is provided on the lower surface of the upper substrate, the upper end of the support column is inserted into the groove of the upper substrate, and the return spring is located at the periphery of the support column; characterized in that: An upper rubber pad (7), an upper ABS plate (9), an upper conductive copper foil (11) and a PET film (13) are arranged in order from top to bottom below the upper substrate, and a lower rubber pad (8), a lower ABS plate (10), a lower conductive copper foil (12) and a polyimide film (14) are arranged in order from bottom to top above the lower substrate; when the upper substrate is not subjected to external load, a gap (15) is formed between the PET film and the polyimide film; when the upper substrate is subjected to external load, the PET film and the polyimide film are charged by contact friction; the upper conductive copper foil (11) and the lower conductive copper foil (12) are respectively connected to a positive lead (16) and a negative lead (17) for outputting the charge generated by the contact friction as electric energy.

2. The contact-type friction nano-power generation device according to claim 1, characterized in that: The periphery of the portion between the upper substrate (3) and the lower substrate (4) is wrapped with a vulcanized organic silicone rubber layer (35).

3. A vehicle charging system based on the contact-type friction nano-power generation device according to claim 1, characterized in that: The invention comprises an expressway (18), an electric vehicle (25), an energy collection device (21) and a contact-type friction nano-power generation device (20). The contact-type friction nano-power generation devices are arranged at intervals below the rutting area of ​​each lane of the expressway. The energy collection device is arranged at the center of the middle lane. A charging receiver (26) is arranged at the bottom of the electric vehicle. The positive lead (16) and the negative lead (17) of the contact-type friction nano-power generation device are connected to the power input end of the energy collection device via a connecting wire (33) buried in the road. The energy collection device is provided with a charging transmitter (24) that matches the charging receiver (26) at the bottom of the electric vehicle.

4. The vehicle charging system of the contact-type friction nano-power generation device according to claim 3 is characterized in that: The energy collection device (21) comprises a metal shell (29), a battery pack (22), a rectifier filter circuit board (31), a single-chip control circuit board (27), a relay circuit board (23), an inductive sensor (28), and a charging transmitter (24) arranged in an internal cavity of the metal shell, a tempered glass plate (30) for sealing the internal cavity of the metal shell being arranged on the top of the metal shell, the charging transmitter being located at the uppermost end of the internal cavity of the metal shell, and the inductive sensor being located below the charging transmitter; The power input end of the rectifier and filter circuit board is connected to the positive lead (16) and the negative lead (17) of the contact-type friction nano-power generation device (20) via the power transmission line (34); the power output end of the rectifier and filter circuit is connected to the positive and negative poles of the power supply of the battery pack (22); the positive and negative poles of the power supply of the battery pack are connected to the power input end of the charging transmitter (24) via the normally open point of the relay in the relay circuit board (23); the output end of the inductive sensor is connected to the signal input end of the single-chip microcomputer in the single-chip microcomputer control circuit board (27); the control end of the relay in the relay circuit board is connected to the output end of the single-chip microcomputer in the single-chip microcomputer control circuit board (27); the single-chip microcomputer detects whether an electric vehicle passes by the upper end via the inductive sensor, and the single-chip microcomputer controls the charging transmitter (24) to output power to the outside by controlling the relay in the relay circuit board.

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