Mixed self-consistent vibration energy collecting device

Abstract

The utility model discloses a mixed self-consistent vibration energy collecting device, and belongs to the technical field of energy collection. According to the utility model, the problem that a power supply mode in the prior art cannot meet some sensors with high driving voltage is solved, the vibration of a bogie of a freight train is input into the shell, the shell converts the vibration into transverse vibration, the transverse displacement of the shell drives the frame on the arc-shaped bottom plate to swing back and forth, and the vibration of the bogie is reduced. When the frame swings back and forth, the first magnet in the slide way can be driven to roll back and forth, the magnetic induction line of the rolling first magnet cuts the copper coil wound on the slide way to generate electric charges, one side of the two magnets on the frame is close to the magnet on the piezoelectric plate, and the other side is far away from the magnet on the piezoelectric plate. A repulsive force of the magnet on the frame acts on the magnet on the piezoelectric plate, so that the piezoelectric plate is bent to generate voltage, power is supplied to a vehicle-mounted sensor on a train, and the power supply problem of vehicle-mounted detection equipment is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of energy collection, and in particular relates to a hybrid self-consistent vibration energy collection device. Background Art

[0002] As a highly efficient and economical means of transport, railway freight plays an important role in promoting the world's economic development. At the same time, railway freight is the key to China's rapid economic development. In China, more than 70% of coal and mineral resources, steel, fertilizers, ores and wood are transported by freight trains during peak periods, which greatly reduces energy waste and drives economic development. As the number of freight train lines increases, some problems are also exposed.

[0003] The load of freight trains is much higher than that of ordinary passenger trains, and the track wear of freight trains is higher than that of ordinary trains. Therefore, the accident rate of freight trains is higher than that of ordinary trains. Compared with ordinary passenger trains, freight trains have a more severe operating environment, and the probability of failure is theoretically higher than that of ordinary trains. At the same time, the installation and maintenance costs are high. The on-board monitoring system of freight trains is also imperfect, and it is impossible to detect the operating status of freight trains in time. This issue has become a research hotspot. Detecting the operating status of freight trains and the power supply of on-board sensors are the focus issues in the current train transportation field. The poor working conditions of freight trains contain many risks, which seriously affect their operating safety. Freight trains often lack electrical pipelines except for the front of the train, but the voltage of conventional electromagnetic energy collection systems is not high, and the power of pure piezoelectric energy collection devices is not high. Combining the two improves the efficiency of energy collection for freight trains and increases the types of sensors that can be driven.

[0004] According to the search, the existing vibration energy harvesting devices, such as the Chinese patent number CN201510953962.3 entitled "Vibration Energy Harvesting System for Converting Vibration Energy into Electric Energy", adopt the design of pure mechanical gear mechanism, including multi-stage gears. Its huge design and complicated gears at each level greatly consume the collected energy, reduce the collection efficiency, and are not simple enough and have a high failure rate. Another example is the Chinese patent number CN201710324575.2 entitled "A Magnetic Suspension Friction-free Vibration Energy Harvesting Device", which uses a magnetic suspension magnet cutting coil to generate electricity, but the voltage of a single electromagnetic power generation is relatively low, which cannot meet the needs of some sensors with high driving voltages, and has certain limitations.

[0005] In view of the above situation, it is necessary to develop a simple-structured, hybrid energy harvesting system to solve the problem of power supply for sensors on trains. Utility Model Content

[0006] Aiming at the problem that the voltage of single electromagnetic power generation in the prior art is relatively low and cannot meet the needs of some sensors with high driving voltage, and has certain limitations, the utility model provides a hybrid self-consistent vibration energy harvesting device.

[0007] The technical solution adopted by the utility model is as follows:

[0008] A hybrid self-consistent vibration energy collection device comprises a shell and a cover body matching the shell, wherein an installation cavity is arranged in the shell, wherein a frame is arranged in the installation cavity, wherein the frame is composed of a straight plate and an arc plate connected to each other at both ends, wherein an arc bottom plate matching the arc plate is arranged in the installation cavity, wherein the width of the arc plate and the arc bottom plate matches the depth of the installation cavity, wherein the arc plate and the arc bottom plate are slidably connected, wherein a coil is arranged in the frame, wherein a first magnet is rotatably arranged in the coil, wherein two piezoelectric sheets are arranged above the straight plate, wherein a second magnet is arranged at one end of each of the piezoelectric sheets, wherein a third magnet is arranged at each position on the straight plate corresponding to the two second magnets, and wherein the second magnet and the third magnet located on the same side repel each other in magnetism.

[0009] After adopting this technical solution, the utility model uses the characteristics of the seesaw to build an arc-shaped frame. The first magnet rolls and drives the frame to swing back and forth. When the first magnet rolls, the magnetic field changes continuously, the coil cuts the magnetic flux lines to generate electrical energy, and the frame repeatedly swings and tilts. At this time, the third magnet at the top of the frame and the second magnet of the piezoelectric piece repel each other, causing the piezoelectric piece to deform and generate voltage to power the sensor. This device uses a hybrid piezoelectric piece and electromagnetic energy collection technology. The voltage generated by the piezoelectric piece after vibration is generally relatively high, which can meet the power supply requirements of high-drive voltage sensors.

[0010] Preferably, a support frame for supporting the coil is further provided in the installation cavity, the support frame is fixedly provided on the arc-shaped plate, and the central axis of the support frame coincides with the central axis of the frame.

[0011] Preferably, the second magnet and the third magnet have the same size, shape and magnetic force.

[0012] Preferably, the coil is wound by copper wire, and a slideway is formed inside the coil, baffles are provided at both open ends of the slideway, and the first magnet is arranged inside the slideway.

[0013] After adopting this technical solution, by arranging a baffle at one end of the slideway, the first magnet is located in the space formed by the baffle, the inner wall of the shell and the coil, thereby preventing the first magnet from sliding out.

[0014] Preferably, sandpaper is laid in the slideway.

[0015] After adopting this technical solution, the surface of the coil is relatively smooth. Therefore, in order to ensure that the first magnet can roll, sandpaper is laid on the surface of the coil to increase the friction force to ensure that the first magnet can roll.

[0016] Preferably, the housing is mounted on a bogie of a freight train, and the energy storage mechanism is electrically connected to an on-board sensor on the freight train.

[0017] After adopting this technical solution, the device is installed on the bogie of the freight train to use the vibration energy of the bogie to make the first magnet roll, so that the whole device can be operated.

[0018] Preferably, the first magnet is cylindrical.

[0019] After adopting this technical solution, the first magnet has a spherical or cylindrical structure so that it can roll inside the coil.

[0020] Preferably, the arc plate is a semicircular arc structure.

[0021] Preferably, the piezoelectric film is a bimorph piezoelectric film.

[0022] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0023] 1. The utility model inputs the vibration of the bogie of the freight train into the shell, and the shell converts it into lateral vibration. The lateral displacement of the shell drives the frame on the arc bottom plate to swing back and forth. When the frame swings back and forth, it can drive the first magnet in the slide to roll back and forth. The magnetic flux lines of the rolling first magnet cut the copper coil wrapped on the slide to generate electric charge. Baffles are provided at both ends of the slide to prevent the cylindrical magnet from rolling out of the slide. In addition, the two magnets on the frame approach the magnet on the piezoelectric sheet fixed on the fixed groove on one side and move away from it at the same time. When the magnet on the piezoelectric sheet and the magnet on the semicircular shell approach each other, the magnet on the semicircular shell has a repulsive force acting on the thorn on the piezoelectric sheet, causing the piezoelectric sheet to bend and generate voltage, and the magnet on the piezoelectric sheet also acts on the magnet on the semicircular shell to cause it to return to a stable position, so that it can better receive the vibration excitation from the shell. In addition, the entire device is framed by a layer of shell plate to prevent the entire device from being offset and fixed on the bogie.

[0024] 2. The utility model can supply power to the on-board sensors on the train, solving the power supply problem of the on-board detection equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of the three-dimensional structure of a hybrid self-consistent vibration energy harvesting device;

[0026] Figure 2A schematic diagram of the three-dimensional structure of a shell of a hybrid self-consistent vibration energy harvesting device;

[0027] Figure 3 A schematic diagram of the three-dimensional structure of a framework of a hybrid self-consistent vibration energy harvesting device;

[0028] Figure 4 A schematic diagram of the two-dimensional structure of a hybrid self-consistent vibration energy harvesting device;

[0029] Figure 5 A schematic diagram of the three-dimensional structure of a cover of a hybrid self-consistent vibration energy harvesting device;

[0030] Figure 6 A graph showing the voltage and power results for a hybrid self-consistent vibration energy harvesting device;

[0031] Among them, 1-shell, 2-frame, 201-straight plate, 202-arc plate, 3-piezoelectric sheet, 4-second magnet, 5-third magnet, 6-baffle, 7-cover, 8-coil, 9-arc bottom plate, 10-first magnet, 11-slide. DETAILED DESCRIPTION

[0032] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.

[0033] In the description of the embodiments of the present application, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or are the positions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0034] like Figure 1-5As shown, a hybrid self-consistent vibration energy harvesting device, the structure of which includes a shell 1 and a cover body 7 matching the shell 1, a mounting cavity is provided in the shell 1, a frame 2 is provided in the mounting cavity, the frame 2 is composed of a straight plate 201 and an arc plate 202 connected to each other at both ends, an arc bottom plate 9 matching the arc plate 202 is provided in the mounting cavity, the width of the arc plate 202 and the arc bottom plate 9 matches the depth of the mounting cavity, the arc plate 202 is slidably connected to the arc bottom plate 9, a coil 8 is provided in the frame 2, a first magnet 10 is rotatably provided in the coil 8, two piezoelectric sheets 3 are provided above the straight plate 201, each of the piezoelectric sheets 3 has a second magnet 4 at one end, a third magnet 5 is provided at each position corresponding to the two second magnets 4 on the straight plate 201, and the second magnet 4 and the third magnet 5 located on the same side repel each other.

[0035] In this embodiment, a support frame for supporting the coil 8 is further disposed in the installation cavity. The support frame is fixedly disposed on the arc plate 202 , and the central axis of the support frame coincides with the central axis of the frame 2 .

[0036] In this embodiment, the second magnet 4 and the third magnet 5 have the same size, shape and magnetic force.

[0037] In this embodiment, the coil 8 is wound by a copper wire with a diameter of 0.2 mm, and a slideway 11 is formed inside the coil 8. Baffles 6 are provided at both open ends of the slideway 11. The first magnet 10 is arranged in the slideway 11. The length of the slideway 11 is 80 mm. The outer rectangular cross-sectional dimensions of the second frame 6 are 32×32 mm and the inner rectangular dimensions are 22×22 mm.

[0038] In this embodiment, the housing 1 is mounted on a bogie of a freight train, and the device is electrically connected to an onboard sensor on the freight train.

[0039] In this embodiment, the arc plate 202 is a semicircular arc structure.

[0040] In this embodiment, the piezoelectric sheet 3 is a long strip-shaped plate structure and is a bimorph piezoelectric sheet with a length of 80 mm.

[0041] In this embodiment, the first magnet 10 is cylindrical, has a grade of N52, a size of Φ20×20 mm, and a height of 20 mm.

[0042] In this embodiment, the arc plate 202 is a semicircular arc structure with a radius of 82 mm, and the radius of the arc bottom plate 9 is 170 mm.

[0043] In this embodiment, this embodiment is basically the same as embodiment 1, except that: in this embodiment, sandpaper is laid inside the slideway 11, and the surface of the coil is relatively smooth. Therefore, in order to ensure that the first magnet can roll, sandpaper is laid on the surface of the coil to increase friction to ensure that the first magnet can roll.

[0044] In this embodiment, the device is installed on the side frame of the bogie.

[0045] In this embodiment, the shell 1 and the cover 7 are both made of acrylic material.

[0046] like Figure 1-6 As shown, the method for using the hybrid self-consistent vibration energy harvesting device includes the following steps:

[0047] Step A: Installing the hybrid energy harvesting device on the train bogie;

[0048] Step B: The bogie vibrates during the operation of the train, driving the frame to slide on the curved bottom plate, thereby driving the first magnet 10 in the frame 2 to roll in the coil 8, causing the magnetic field to change continuously. The magnetic flux lines of the rolling first magnet 10 cut the coil 8 to generate charges, which power the on-board sensor; at the same time, when the first magnet 10 rolls, the center of gravity of the frame 2 shifts, causing both ends of the frame 2 to swing up and down, thereby causing the third magnet 5 to approach or move away from the second magnet 4. Due to the magnetic repulsion between the second magnet 4 and the third magnet 5, when the third magnet 5 approaches the second magnet 4, the voltage sheet is deformed to generate voltage, which powers the on-board sensor.

[0049] When the train speed is 80km / h and the load is 20t, the voltage and power distributed to the external sensor as the load changes are shown in the figure below: Figure 6 As shown. Figure 6 It can be seen that the maximum power that can be allocated to the external sensor can reach 74.1mW, and the maximum voltage can reach 11.5V. The power situation of the freight train sensor is shown in Table 1. It can be seen that the power provided by the device is sufficient to power most freight train sensors on the market.

[0050] Table 1

[0051]

[0052] The above-mentioned embodiments only express the specific implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the protection scope of the present application. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the technical solution concept of the present application, and these all belong to the protection scope of the present application.

Claims

1. A hybrid self-consistent vibration energy harvesting device, characterized in that: The invention comprises a shell (1) and a cover (7) matching the shell (1), wherein the shell (1) is provided with a mounting cavity, wherein the mounting cavity is provided with a frame (2), wherein the frame (2) is composed of a straight plate (201) and an arc-shaped plate (202) connected to each other at both ends, wherein the mounting cavity is provided with an arc-shaped bottom plate (9) matching with the arc-shaped plate (202), wherein the width of the arc-shaped plate (202) and the arc-shaped bottom plate (9) matches the depth of the mounting cavity, and the arc-shaped plate (202) and the arc-shaped bottom plate (9) are connected to each other at both ends. (9) Sliding connection, a coil (8) is arranged in the frame (2), a first magnet (10) is rotatably arranged in the coil (8), two piezoelectric sheets (3) are arranged above the straight plate (201), one end of each of the piezoelectric sheets (3) is provided with a second magnet (4), a third magnet (5) is arranged on the straight plate (201) at a position corresponding to the two second magnets (4), and the second magnet (4) and the third magnet (5) located on the same side repel each other magnetically.

2. A hybrid self-consistent vibration energy harvesting device according to claim 1, characterized in that: A support frame for supporting the coil (8) is also provided in the installation cavity. The support frame is fixedly arranged on the arc-shaped plate (202), and the central axis of the support frame coincides with the central axis of the frame (2).

3. A hybrid self-consistent vibration energy harvesting device according to claim 1, characterized in that: The second magnet (4) and the third magnet (5) have the same size, shape and magnetic force.

4. The hybrid self-consistent vibration energy harvesting device according to claim 1, characterized in that: The coil (8) is wound with copper wire, and a slideway (11) is formed inside the coil (8). Baffles (6) are provided at both open ends of the slideway (11), and the first magnet (10) is arranged inside the slideway (11).

5. A hybrid self-consistent vibration energy harvesting device according to claim 4, characterized in that: Sandpaper is laid inside the slideway (11).

6. A hybrid self-consistent vibration energy harvesting device according to any one of claims 1 to 5, characterized in that: The housing (1) is mounted on a freight train bogie.

7. A hybrid self-consistent vibration energy harvesting device according to any one of claims 1 to 5, characterized in that: The first magnet (10) is cylindrical.

8. A hybrid self-consistent vibration energy harvesting device according to any one of claims 1 to 5, characterized in that: The arc-shaped plate (202) is a semicircular arc structure.

9. A hybrid self-consistent vibration energy harvesting device according to any one of claims 1 to 5, characterized in that: The piezoelectric sheet (3) is a bimorph piezoelectric sheet.

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