Multi-dimensional vibration energy collecting device integrating dampers

Abstract

The invention belongs to the technical field of vibration energy collection, and discloses a multi-dimensional vibration energy collection device integrated with a damper, which mainly utilizes the Faraday electromagnetic induction principle to realize the function of vibration power generation. When an automobile runs on a normal road, a magnetic ball in the collecting device provides an internal diffusion magnetic field, the magnetic ball irregularly vibrates in an inner cavity of a cup-shaped body, and magnetic flux changes in the moving process; the springs in the dampers surrounding the periphery of the collecting device rotate at a high speed through pawl-ratchet wheel transmission, so that induced electromotive force is generated in damper coils, and the two systems jointly complete conversion from mechanical energy to electric energy. When vibration is large under bumpy road conditions, the damper can fully play a damping role, the mechanical stress of the cup-shaped body in the vibration process is reduced, and the service life of equipment is prolonged. Through ingenious design, originally wasted vibration energy is converted into electric energy, and stable electric power support can be provided for various low-power-consumption devices.

Description

Technical Field

[0001] The present invention belongs to the technical field of vibration energy harvesting, and more specifically, relates to a device for recovering dissipated energy generated by vibration. Background Art

[0002] Vibration energy, as a green energy widely existing in the natural environment, is characterized by wide distribution and strong persistence. Its application scenarios cover many fields such as vehicle driving, industrial equipment operation, and seismic wave propagation. However, despite certain progress in vibration power generation technology in recent years, there are still many challenges in practical applications. Taking a vehicle as an example, the vibration energy generated during its driving can reach several hundred watts, but the current energy recovery rate is less than 5%. This situation not only highlights the problem of low vibration power generation efficiency but also reflects the deficiencies in energy conversion and utilization of existing technologies. In addition, the high cost of vibration energy collectors further restricts their large-scale application. At the same time, most common vibration collectors on the market adopt a single-degree-of-freedom collection method, which is difficult to adapt to complex and changeable vibration environments, resulting in difficulty in improving the energy collection efficiency.

[0003] From a more macroscopic perspective, the efficient recovery of vibration energy is of great significance for realizing the sustainable utilization of energy. As a clean and renewable energy, if vibration energy can be efficiently recovered and used to power other electrical appliances, it will greatly promote the process of green development. Summary of the Invention

[0004] The present invention aims to overcome the problem of low efficiency in the process of vibration energy recovery and utilization, and provides a multi-dimensional vibration energy harvesting device integrating a damper, which works in cooperation with two energy harvesting modules, namely an internal magnetic ball and an external damper. When the device vibrates, the internal magnetic ball cuts the magnetic induction line to generate electricity; the external damper generates electricity based on Faraday's law of electromagnetic induction, and at the same time uses the magnetorheological effect to reduce vibration. Dampers distributed in multiple different directions collect vibrations in multiple directions, realizing an increase in power generation and an improvement in the damping level, and finally converting vibration energy into electrical energy. Through ingenious design, the present invention converts the originally wasted vibration energy into electrical energy, which can provide stable power support for various low-power devices.

[0005] In order to solve the above technical problems, the present invention is realized through the following technical solutions:

[0006] The present invention provides a multi-dimensional vibration energy harvesting device integrating a damper, including a cup-shaped body, an upper cover, a magnetic ball, a damper, a damper housing, and an electromagnetic coil;

[0007] The cup-shaped body has an inner cavity with an open top, the bottom surface of the inner cavity is set as an arc surface, and the bottom surface of the inner cavity is smoothly transitioned with the inner wall; the upper cover closes the open top of the cup-shaped body, and the magnetic ball is placed in the inner cavity of the cup-shaped body;

[0008] A plurality of the dampers are circumferentially and uniformly fixed on the side surface of the cup-shaped body, and a damper housing is arranged outside each damper, and the damper housing is fixed to the side surface of the cup-shaped body; the electromagnetic coil is wound around the outside of the damper housing along the axial direction thereof;

[0009] When vibration occurs, the magnetic ball moves in a non-linear and multi-directional manner in the inner cavity of the cup-shaped body, so that the electromagnetic coil generates an induced electromotive force;

[0010] The damper includes a damper base, a damper cover plate, a tower spring, a screw, an opening disc, a ratchet tooth disc, a permanent magnet mass, a pawl mechanism, and a damper coil; wherein, the tower spring, the screw, the opening disc, the ratchet tooth disc, and the pawl mechanism are all coaxially arranged;

[0011] The damper base is relatively close to the cup-shaped body and is fixedly connected to the cup-shaped body, and the damper cover plate is relatively far from the cup-shaped body and is disposed opposite to the damper base; the damper cover plate and the damper base are connected by a plurality of connecting columns, one end of the connecting column is fixed to the damper cover plate, and the other end is inserted into a blind hole provided in the damper base, and the connecting column is not fixed to the blind hole, so that the damper cover plate can move relative to the damper base during vibration to adjust the distance between the damper cover plate and the damper base; at the same time, the top surface of the damper housing is used for limiting the movement stroke of the damper cover plate to prevent the connecting column from coming out of the blind hole;

[0012] The screw includes a smooth shaft section and a spiral section, the end of the smooth shaft section is fixedly connected to the inner side surface of the damper cover plate by a thread, and the spiral section is provided with double spiral teeth for transmission throughout the length;

[0013] A tower spring is arranged between the bottom surface of the damper cover plate and the damper base, and the tower spring is sleeved outside the screw; when the tower spring is in a free state, the damper cover plate is in direct contact with the damper housing; during vibration, the tower spring will reciprocate; when the tower spring is compressed, the damper cover plate moves towards the damper base, driving the screw to perform a linear motion;

[0014] The perforated disc is sleeved outside the helical section of the screw, and the through hole in the center of the perforated disc matches the cross-section of the helical section of the screw, realizing the engagement between the perforated disc and the helical section of the screw; external vibration compresses and restores the tower spring, causing the screw to move linearly, thereby driving the perforated disc to rotate around the axis of the screw;

[0015] The ratchet-toothed disc is installed inside the damper base, and the damper base radially positions the ratchet-toothed disc, and the ratchet-toothed disc can rotate freely inside the damper base; several permanent magnet masses are installed on the outer ring of the ratchet-toothed disc, and an inner concave part is provided on the side of the ratchet-toothed disc facing the damper cover plate, and a plurality of ratchet teeth are formed in the circumferential direction of the inner concave part;

[0016] The ratchet mechanism is arranged in the inner concave part of the ratchet-toothed disc, including a ratchet pawl bracket in the center and ratchet teeth arranged around the ratchet pawl bracket; the ratchet pawl bracket is provided with a central hole, and the helical section of the screw can linearly move and rotate in the central hole; the perforated disc is fixedly connected to the top surface of the ratchet pawl bracket to drive the ratchet mechanism to rotate around the axis of the screw; the ratchet teeth are engaged with the ratchet teeth of the ratchet-toothed disc, enabling the ratchet mechanism to drive the ratchet-toothed disc to rotate in a fixed direction, thereby realizing the rotation of the permanent magnet masses;

[0017] A plurality of bosses are circumferentially and evenly arranged on the damper base, and each boss is wound with a damper coil; during the rotation of the permanent magnet masses with the ratchet-toothed disc, the damper coil cuts to generate an induced current.

[0018] Further, a base is provided under the cup-shaped body, and the base is used to support the cup-shaped body.

[0019] Further, a thermopile is provided on the lower surface of the upper cover, and a plurality of thermopiles are evenly arranged in a ring.

[0020] Further, the ratchet-toothed disc is of a cylindrical structure, and the cylindrical structure matches the cylindrical mounting hole of the damper base. The ratchet-toothed disc is sleeved in the cylindrical mounting hole and has a clearance fit with the cylindrical mounting hole.

[0021] Further, the ratchet-toothed disc is of a cylindrical structure, and a plurality of grooves with square holes are provided on the outer side wall of the cylindrical structure. The plurality of grooves are circumferentially and evenly arranged along the cylindrical structure and are spaced apart, and each groove is respectively fitted with a permanent magnet mass.

[0022] Further, the number of ratchet teeth is 2; the number of ratchet teeth is 6 - 8; the number of permanent magnet masses 14 is 3 - 6.

[0023] Further, the smaller end of the tower spring abuts against the inner side surface of the damper cover plate, and the larger end abuts against the surface of the damper base; a circular concave is provided on the surface of the damper base to cooperate with the larger end of the tower spring for positioning.

[0024] Further, the ratchet teeth include a driving surface and a check surface; each of the ratchet teeth is connected to the ratchet pawl bracket through a micro torsion spring for micro torsion. One end of the micro torsion spring is fixed on the ratchet pawl bracket, and the other end is embedded in the groove of the ratchet tooth;

[0025] When the screw moves linearly towards the damper base, causing the screw to drive the ratchet mechanism to rotate, the ratchet teeth protrude outwards. The tip of the ratchet tooth slides along the driving surface and compresses the torsion spring until it is embedded in the ratchet teeth, causing the ratchet tooth disc to rotate and drive the permanent magnet mass block to rotate;

[0026] During the process of the compressed tower spring returning to its natural state, the damper cover plate drives the screw to reset, the torsion spring connecting the ratchet tooth and the ratchet mechanism returns to its natural state, the ratchet teeth of the ratchet mechanism retract and disengage from the ratchet teeth, and the ratchet tooth disc does not rotate during this process.

[0027] Furthermore, the driving surface of the ratchet tooth is a guiding inclined surface inclined at 30°, and the check surface is a steep straight surface inclined at 60°.

[0028] The beneficial effects of the present invention are as follows:

[0029] A multi-dimensional vibration energy harvesting device integrating a damper according to the present invention realizes a high integration of efficient vibration energy recovery and vibration damping functions through innovative design: based on the non-linear movement of the magnetic balls inside the cup-shaped body to cut the magnetic induction lines for power generation, combined with the pawl-ratchet transmission and electromagnetic induction synergy mechanism of the circumferentially distributed damper, it breaks through the limitations of traditional single-degree-of-freedom harvesting and can synchronously capture multi-dimensional vibration energy. On the one hand, a magnetic field is provided by a permanent magnet, the magnetic field intensity is adjusted by a coil, and the damping characteristics of the damper are used to achieve a vibration damping effect; on the other hand, through external vibration excitation, no matter from which direction the external vibration source comes, the vibration can drive the movement of the magnetic balls, and the magnetic balls perform non-linear movement inside the device body to cut the magnetic induction lines, realizing the collection of multi-directional vibration energy; its integrated design recovers mechanical energy while damping vibration, avoiding damage to internal and external rigid parts due to vibration, and is suitable for human health monitoring, power supply for in-vehicle electronic devices, and promoting the formation of a mobile self-powered green mode. Description of the Drawings

[0030] Figure 1It is a schematic structural diagram of a multi-dimensional vibration energy harvesting device of a collective damper provided by an embodiment of the present invention.

[0031] Figure 2 It is a schematic structural diagram of a damper, a damper housing, and an electromagnetic coil provided by an embodiment of the present invention.

[0032] Figure 3 It is a schematic structural diagram of a damper provided by an embodiment of the present invention.

[0033] Figure 4 It is a structural diagram of a ratchet-pawl transmission part in a damper provided by an embodiment of the present invention.

[0034] In the above figures: 1. Damper housing; 2. Electromagnetic coil; 3. Magnetic ball; 4. Cup-shaped body; 5. Upper cover; 6. Thermoelectric sheet; 7. Damper; 8. Base; 9. Tower spring; 10. Damper coil; 11. Screw; 12. Damper cover plate; 13. Damper base; 14. Permanent magnet mass; 15. Pawl mechanism; 16. Groove; 17. Perforated disc; 18. Ratchet tooth disc. Specific embodiments

[0035] To further understand the content, features, and effects of the present invention, the following embodiments are exemplified and described in detail with reference to the accompanying drawings:

[0036] See Figure 1 As shown, this embodiment provides a multi-dimensional vibration energy harvesting device of a collective damper, which mainly utilizes the principle of Faraday electromagnetic induction to achieve the function of vibration power generation. When the vehicle is driving on a normal road, the magnetic ball 3 in the harvesting device provides the magnetic field inside the device. The magnetic ball 3 vibrates randomly in the inner cavity of the cup-shaped body 4, and the magnetic induction lines of the magnetic field emitted by the magnetic ball 3 are cut by the electromagnetic coil 2, resulting in a change in magnetic flux during the movement; while the springs 9 in each damper 7 surrounding the harvesting device rotate at high speed through a ratchet-pawl transmission, thereby generating an induced electromotive force in the damper coil 10. The two systems jointly complete the conversion of mechanical energy into electrical energy. When encountering large vibrations on bumpy roads, the damper 7 can fully play its shock-absorbing role, reducing the mechanical stress of the cup-shaped body 4 during vibration and extending the service life of the device.

[0037] As Figure 1 shown, a multi-dimensional vibration energy harvesting device of a collective damper disclosed in this embodiment includes a damper housing 1, an electromagnetic coil 2, a magnetic ball 3, a cup-shaped body 4, an upper cover 5, a thermoelectric sheet 6, a damper 7, and a base 8.

[0038] The cup-shaped body 4 has a top-open inner cavity, the bottom surface of the inner cavity is set as an arc surface, and the bottom surface of the inner cavity is smoothly transitioned with the inner wall. The inner cavity of the cup-shaped body 4 is preferably a goblet-shaped model, designed according to the bowl-shaped curve of the goblet body. A base 8 is provided below the cup-shaped body 4, and the base 8 is fixedly connected to the cup-shaped body 4 to effectively support the cup-shaped body 4 and prevent the cup-shaped body 4 from tipping and skewing under external vibration excitation. An upper cover 5 is installed on the top of the cup-shaped body 4, and the upper cover 5 is used to close the top opening of the inner cavity of the cup-shaped body 4. The upper cover 5 is fixed to the cup-shaped body through wedge-shaped engagement.

[0039] The thermoelectric chips 6 are arranged on the lower surface of the upper cover 5, and a plurality of thermoelectric chips 6 are arranged in a circular and evenly distributed manner. The number of thermoelectric chips 6 can be increased or decreased according to the size of the upper cover 5 of the cup to ensure adaptation to different usage scenarios. The main function of the thermoelectric chips 6 is to absorb vibration waste heat and radiant heat and improve the energy efficiency of the system. Among them, the vibration waste heat is generated by the collision and friction between the magnetic ball 3 and the inner wall of the cup-shaped body 4, and the radiant heat is dissipated by the internal heating of the magnetic ball 3.

[0040] A magnetic ball 3 is placed in the inner cavity of the cup-shaped body 4. The magnetic ball 3 is made of plastic and magnetic material. For example, it can be made by mixing and injection molding resin and ferrite magnetic powder, reducing the weight of the magnetic ball 3 and improving its flexibility. Preferably, the mass of the magnetic ball 3 is 0.01326 kg to 0.0442 kg; in the preferred mass range, the magnetic ball 3 can have good rotational stability under low-frequency vibration. Preferably, the diameter of the magnetic ball 3 is 15 mm to 50 mm; within the preferred diameter range, the magnetic ball 3 can have good rotational characteristics under external excitation. When the vibration occurs, the magnetic ball 3 moves in a non-linear and multi-directional manner in the inner cavity of the cup-shaped body 4. There is a magnetic field around the magnetic ball 3, filled with countless magnetic induction lines used to vividly describe the magnetic field. When the electromagnetic coil 2 is within the range of this magnetic field, the magnetic induction lines emitted by the magnetic ball 3 will pass through the area enclosed by the electromagnetic coil 2. When the magnetic ball 3 moves relative to the electromagnetic coil 2, such as approaching or moving away from the electromagnetic coil 2 on the damper housing 1, the number of magnetic induction lines passing through the area of the electromagnetic coil 2 will change. The magnetic induction lines emitted by the magnetic ball 3 are cut by the electromagnetic coil 2 wound on the damper housing 1. According to the electromagnetic induction principle, the electromagnetic coil 2 here is a closed circuit. Once the magnetic flux in the closed circuit changes, an induced electromotive force will be generated in the electromagnetic coil 2. In this way, by utilizing the gravitational potential energy of the magnetic ball 3 and the external multi-directional vibration excitation, multi-dimensional vibration energy can be fully collected.

[0041] A plurality of dampers 7 are installed on the side surface of the cup-shaped body 4, and the plurality of dampers 7 are evenly distributed along the circumferential direction of the outside of the cup-shaped body 4. The number of dampers 7 can be increased or decreased according to the size of the cup-shaped body 4 to ensure adaptation to different usage scenarios. Threaded holes are respectively provided at the corresponding positions of the damper base 13 of each damper 7 and the cup-shaped body 4, and the damper 7 is fixedly connected to the cup-shaped body 4 through a double-headed bolt.

[0042] As Figure 2 shown, a damper housing 1 is provided outside each damper 7, and the damper housing 1 and the side surface of the cup-shaped body 4 are generally fixed by welding. An electromagnetic coil 2 is wound around the outside of the damper housing 1 along its axial direction. There is a load resistor inside the electromagnetic coil 2, and the electromagnetic coil 2 itself has parameters such as inductance and resistance. Preferably, the resistance of the electromagnetic coil 2 is 17.6 Ω to 35.2 Ω to ensure the equivalent electromagnetic coefficient of the electromagnetic coil 2.

[0043] As Figure 3 and Figure 4 shown, the damper 7 includes a tower spring 9, a damper coil 10, a screw 11, a damper cover plate 12, a damper base 13, a permanent magnet mass 14, a pawl mechanism 15, a groove 16, an opening disc 17, and a ratchet tooth disc 18.

[0044] The damper cover plate 12 includes a rectangular panel. Connecting columns perpendicular to the rectangular panel are respectively provided at the four corners of the rectangular panel. The ends of the four connecting columns can be inserted into four blind holes with a certain depth provided in the damper base 13. The connecting columns and the blind holes are not fixed, so that the damper cover plate 12 can move relative to the damper base 13 to adjust the distance between the rectangular panel of the damper cover plate 12 and the damper base 13. As a preferred embodiment, the depth of the blind hole in the damper base 13 is about one-third of the thickness of the damper base 13.

[0045] The screw 11 includes a smooth shaft section and a spiral section. An external thread for connection is provided at the end of the smooth shaft section, and double spiral teeth for transmission are provided throughout the spiral section. The smooth shaft section of the screw 11 is connected to the threaded hole on the inner side surface of the damper cover plate 12 by the external thread, so that the end of the smooth shaft section of the screw 11 is fixed to the bottom surface of the damper cover plate 12.

[0046] The opening disc 17 is sleeved outside the spiral section of the screw 11. The opening disc 17 is a circular thin plate with a through hole opened. The through hole opened in it matches the cross-section of the spiral section of the screw 11, providing a structural basis for the mutual engagement between the two. External vibration compresses and restores the tower spring 9, driving the linear movement of the screw 11. The force generated by this movement is transmitted to the opening disc 17 through the double spiral teeth, causing the opening disc 17 to rotate around the axis of the screw 11.

[0047] The ratchet-tooth disc 18 is of a cylindrical structure, and this cylindrical structure is coaxially arranged with the screw 11. The ratchet-tooth disc 18 is installed inside the damper base 13. The damper base 13 is provided with a cylindrical mounting hole that matches the outer diameter of the ratchet-tooth disc 18. The ratchet-tooth disc 18 is sleeved into this cylindrical mounting hole and is in clearance fit to ensure that the disc 18 can rotate freely within the damper base 13. At the same time, radial positioning is achieved through tolerance control to ensure that the rotation axis of the ratchet-tooth disc 18 always remains coaxial with the screw 11.

[0048] On the outer sidewall of the cylindrical structure of the ratchet-tooth disc 18, there are a number of grooves 16 with square holes. The number of grooves 16 is circumferentially evenly distributed and spaced. Each groove 16 is embedded with a permanent magnet mass 14. On the bottom surface of the cylindrical structure of the ratchet-tooth disc 18, there is a concave portion, and a plurality of ratchet teeth are formed circumferentially on this concave portion. The ratchet teeth are used to mesh with the shape of the pawl teeth. As a preferred embodiment, the number of permanent magnet masses 14 is 3 to 6, and the number of ratchet teeth is 6 to 8.

[0049] The pawl mechanism 15 is arranged on the bottom surface of the cylindrical structure of the ratchet-tooth disc 18, including a pawl bracket at the center and two pawl teeth arranged around the pawl bracket. The pawl bracket and the pawl teeth are both coaxially arranged with the screw 11.

[0050] The pawl bracket is provided with a central hole, and the inner diameter of this central hole is larger than the maximum radial dimension of the helical section of the screw 11 to enable the helical section of the screw 11 to expand and contract within the central hole of the pawl bracket. The perforated disc 17 is fixedly connected to the top surface of the pawl bracket. For example, it can be fixed to the pawl bracket by welding or rivets to ensure that the perforated disc 17 is coaxial with the pawl bracket and has no relative rotation. After the perforated disc 17 rotates around the axis of the screw 11, the basic conversion of "linear motion → rotational motion" is realized. When the screw 11 moves linearly towards the damper base 13, due to the interlocking of the screw 11 and the perforated disc 17, the linear motion of the screw is converted into the rotational motion of the perforated disc 17. Since the pawl mechanism 15 is fixedly connected to the perforated disc 17 through the pawl bracket, the pawl mechanism 15 also rotates with the perforated disc 17.

[0051] The pawl teeth mesh with the ratchet teeth, so the rotation of the pawl teeth can drive the ratchet-tooth disc 18 to rotate in a fixed direction, and finally the rotation of a plurality of permanent magnet masses 14 is realized. During the rotation of the disc 18, two pairs of pawl-ratchet teeth are meshed, and the remaining unmeshed pawl-ratchet teeth serve as spare drive teeth, allowing the disc 18 to switch the meshing teeth in different vibration cycles.

[0052] A tower spring 9 is provided between the bottom surface of the damper cover plate 12 and the damper base 13, and the tower spring 9 is sleeved outside the screw rod 11. The smaller end of the tower spring 9 abuts against the inner side surface of the damper cover plate 12, and the larger end abuts against the surface of the damper base 13 (the end surface facing the damper cover plate 12). A circular concave is provided on the surface of the damper base 13 to cooperate with the larger end of the tower spring 9, and the circular concave is used to make the positioning of the tower spring 9 more reliable. When the tower spring 9 is in a free state, the damper cover plate 12 is in direct contact with the damper housing 1. When external vibration occurs, the movement of the damper cover plate 12 causes the tower spring 9 to be in a compressed state.

[0053] The damper base 13 is of a cuboid structure, and convex platforms for installing the damper coil 10 are welded on the four sides of its outer side respectively, and the damper coil 10 is wound on the convex platforms. During the rotation of the ratchet tooth disc 18, the magnetic induction lines of the rotating permanent magnet mass are cut by the damper coil 10, thereby generating an induced current.

[0054] When vibration occurs, the tower spring 9 will reciprocate. When the tower spring 9 is compressed, the damper cover plate 12 moves towards the damper base 13, driving the screw rod 11 to move towards the damper base 13. The tower spring 9 drives the screw rod 11 to perform a linear motion. Due to the mutual engagement of the screw rod 11 and the perforated disc 17, the perforated disc 17 and the ratchet mechanism 15 start to rotate.

[0055] Preferably, the driving surface of the ratchet tooth is a guiding inclined surface inclined at 30°, and the tooth back is a steep check surface inclined at 60°. Each ratchet tooth is connected to the ratchet bracket through a micro torsion spring. One end of the micro torsion spring is fixed on the ratchet bracket, and the other end is embedded in the groove of the ratchet tooth. When the ratchet mechanism rotates, the two ratchet teeth protrude outwards. The tip of the ratchet tooth first contacts the guiding inclined surface of the ratchet tooth, slides along the guiding inclined surface and compresses the torsion spring until the root of the ratchet tooth fits with the bottom of the ratchet tooth groove, forming a rigid engagement, and is embedded in the ratchet teeth of the ratchet tooth disc 18, driving the ratchet tooth disc 18 to start rotating, and driving the permanent magnet mass 14 in the groove 16 to rotate. During the process of the compressed tower spring 9 returning to its natural state, the damper cover plate 12 drives the screw rod 11 to reset, the torsion spring connecting the ratchet tooth and the ratchet mechanism returns to its natural state, and the ratchet teeth of the ratchet mechanism 15 retract, causing the ratchet teeth to disengage from the ratchet teeth. During this process, the ratchet tooth disc 18 does not rotate. In addition, when the ratchet tooth disc 18 attempts to rotate in the reverse direction due to vibration inertia or external force, the tooth back of the engaged ratchet tooth will contact its corresponding engaged ratchet. Due to the steep design of the tooth back, the reverse rotation of the disc is prevented.

[0056] Each damper 7 is equipped with a multi-turn damper coil 10. When the permanent magnet mass 14 rotates with the ratchet tooth disc 18, the damper coil 10 cuts the magnetic induction lines around the ratchet tooth disc 18, and an induced current will be generated in the damper coil 10. Vibrations in any direction can cause the tower spring 9 of the damper to deform, thereby realizing the collection of multi-directional vibration energy.

[0057] It can be seen that a multi-dimensional vibration energy collection device incorporating a damper disclosed by the present invention has a compact structure, can recover multi-directional vibration energy, and has both energy feeding and vibration damping functions; it overcomes the defects of traditional vibration power generation devices that, due to structural limitations, can only collect energy in a single vibration direction and are difficult to improve the low power generation efficiency and single application scenarios; at the same time, it can avoid the problems that precision instruments installed on the fuselage are affected in normal operation due to vibration or damaged due to strong vibration.

[0058] Although the preferred embodiments of the present invention have been described above in conjunction with the accompanying drawings, the present invention is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present invention, those of ordinary skill in the art can also make many specific transformations in form without departing from the spirit of the invention and the scope protected by the claims, and all of these fall within the protection scope of the present invention.

Claims

1. A multi-dimensional vibration energy harvesting device incorporating a damper, characterized in that, It includes a cup-shaped body, an upper cover, a magnetic ball, a damper, a damper housing, and an electromagnetic coil; The cup-shaped body has an inner cavity with an open top. The bottom surface of its inner cavity is set as an arc surface, and the bottom surface of the inner cavity is smoothly transitioned with the inner wall. The upper cover closes the open top of the cup-shaped body, and the magnetic ball is placed in the inner cavity of the cup-shaped body; A plurality of the dampers are circumferentially and uniformly fixed on the side surface of the cup-shaped body. The damper housing is arranged outside each damper, and the damper housing is fixed to the side surface of the cup-shaped body. The electromagnetic coil is wound around the outside of the damper housing along the axial direction of the damper housing; When vibration occurs, the magnetic ball moves in a non-linear and multi-directional manner in the inner cavity of the cup-shaped body, causing the electromagnetic coil to generate an induced electromotive force; The damper includes a damper base, a damper cover plate, a tower spring, a screw, an opening disc, a ratchet tooth disc, a permanent magnet mass, a pawl mechanism, and a damper coil. Among them, the tower spring, the screw, the opening disc, the ratchet tooth disc, and the pawl mechanism are all coaxially arranged; The damper base is relatively close to the cup-shaped body and is fixedly connected to the cup-shaped body. The damper cover plate is relatively far from the cup-shaped body and is arranged opposite to the damper base. The damper cover plate and the damper base are connected by a plurality of connecting columns. One end of the connecting column is fixed to the damper cover plate, and the other end is inserted into a blind hole arranged in the damper base. The connecting column is not fixed to the blind hole, so that the damper cover plate can move relative to the damper base during vibration to adjust the distance between the damper cover plate and the damper base. At the same time, the top surface of the damper housing is used to limit the movement stroke of the damper cover plate to prevent the connecting column from coming out of the blind hole; The screw includes a smooth shaft section and a spiral section. The end of the smooth shaft section is fixedly connected to the thread on the inner side surface of the damper cover plate, and the spiral section is provided with double spiral teeth for transmission throughout its length; A tower spring is arranged between the bottom surface of the damper cover plate and the damper base, and the tower spring is sleeved outside the screw. When the tower spring is in a free state, the damper cover plate is in direct contact with the damper housing. During vibration, the tower spring will reciprocate. When the tower spring is compressed, the damper cover plate moves towards the damper base, driving the screw to perform a linear motion; The opening disc is sleeved outside the spiral section of the screw. The through hole in the center of the opening disc matches the cross-section of the spiral section of the screw, realizing the engagement between the opening disc and the spiral section of the screw. External vibration compresses and restores the tower spring, causing the screw to perform a linear motion, thereby driving the opening disc to rotate around the axis of the screw; The ratchet-toothed disc is installed inside the damper base. The damper base radially positions the ratchet-toothed disc, and the ratchet-toothed disc can freely rotate inside the damper base. A number of the permanent magnet masses are installed on the outer ring of the ratchet-toothed disc. An inner concave portion is provided on the surface of the ratchet-toothed disc facing the damper cover plate. A plurality of ratchet teeth are formed in the circumferential direction of the inner concave portion. The pawl mechanism is arranged in the inner concave portion of the ratchet-toothed disc and includes a pawl support at the center and pawl teeth arranged around the pawl support. The pawl support is provided with a central hole through which the helical section of the screw can linearly move and rotate. The perforated disc is fixedly connected to the top surface of the pawl support to drive the pawl mechanism to rotate around the axis of the screw. The pawl teeth are engaged with the ratchet teeth of the ratchet-toothed disc, enabling the pawl mechanism to drive the ratchet-toothed disc to rotate in a fixed direction, thereby realizing the rotation of the permanent magnet masses. A number of bosses are circumferentially and evenly arranged on the damper base, and each boss is wound with a damper coil. During the rotation of the permanent magnet masses with the ratchet-toothed disc, the damper coil cuts to generate an induced current.

2. The multi-dimensional vibration energy harvesting device with a collective damper according to claim 1, characterized in that, A base is provided under the cup-shaped body, and the base is used to support the cup-shaped body.

3. A multi-dimensional vibration energy harvesting device with a collective damper according to claim 1, characterized in that, Thermopiles are arranged on the lower surface of the upper cover, and a plurality of thermopiles are evenly arranged in a ring shape.

4. A multi-dimensional vibration energy harvesting device with a collective damper according to claim 1, characterized in that, The ratchet-toothed disc is of a cylindrical structure, which matches the cylindrical mounting hole of the damper base. The ratchet-toothed disc is sleeved in the cylindrical mounting hole and has a clearance fit with the cylindrical mounting hole.

5. A multi-dimensional vibration energy harvesting device with a collective damper according to claim 1, characterized in that, The ratchet-toothed disc is of a cylindrical structure, and a plurality of grooves with square holes are provided on the outer side wall of the cylindrical structure. The plurality of grooves are circumferentially and evenly arranged along the cylindrical structure and are spaced apart, and each groove is respectively fitted with a permanent magnet mass.

6. The multi-dimensional vibration energy harvesting device with a collective damper according to claim 1, characterized in that, The number of the pawl teeth is 2; the number of the ratchet teeth is 6 - 8; the number of the permanent magnet masses 14 is 3 - 6.

7. A multi-dimensional vibration energy harvesting device incorporating a damper, characterized in that, The smaller end of the tower spring abuts against the inner side surface of the damper cover plate, and the larger end abuts against the surface of the damper base. A circular inner concave is provided on the surface of the damper base to cooperate with the larger end of the tower spring for positioning.

8. A multi-dimensional vibration energy harvesting device with a collective damper according to claim 1, characterized in that, The ratchet teeth include a driving surface and a check surface; each pawl tooth is connected to the pawl support through a micro torsion spring for micro torsion. One end of the micro torsion spring is fixed on the pawl support, and the other end is embedded in the groove of the pawl tooth. When the screw moves linearly towards the damper base and drives the pawl mechanism to rotate, the pawl teeth protrude outwards. The tip of the pawl teeth slides along the driving surface and compresses the torsion spring until it is embedded in the ratchet teeth, causing the ratchet-toothed disc to rotate and drive the permanent magnet masses to rotate. During the process of the compressed tower spring returning to its natural state, the damper cover plate drives the screw to reset, and the torsion spring connecting the pawl teeth and the pawl mechanism returns to its natural state. The pawl teeth of the pawl mechanism retract and disengage from the ratchet teeth, and the ratchet-toothed disc does not rotate during this process.

9. The multi-dimensional vibration energy harvesting device with a collective damper according to claim 8, characterized in that, The driving surface of the ratchet teeth is a guiding inclined surface inclined at 30°, and the check surface is a steep straight surface inclined at 60°.

Images