Electromagnetic road area mechanical energy conversion and collection device and energy collection method

Abstract

The invention belongs to the technical field of vibration energy capture, and relates to an electromagnetic road area mechanical energy conversion and collection device and an energy collection method. The device comprises a bearing plate, a shell and a base, an inner cavity of the shell is divided into an upper groove and a lower groove; a guide rod and a reset spring are arranged in the upper groove; the upper end of the reset spring is connected to the lower side of the bearing plate, and the lower end of the reset spring abuts against the transition layer. A ratchet wheel, a pawl, a twisting disc and a supporting cylinder are arranged in the lower groove, and the lower end of the guide rod penetrates through the transition layer, then extends into the lower groove and is in meshed connection with the twisting disc; the twisting disc is fixed to the upper end of the supporting cylinder, and the pawl is installed on the supporting cylinder. The ratchet wheel is installed on the base, a middle installation shaft of the ratchet wheel is located below the supporting cylinder, and the ratchet wheel can horizontally rotate relative to the base. A plurality of magnets are installed on the bottom face of the ratchet wheel, and a plurality of induction coils are installed on the base. The problems that the motion conversion effect between existing complex mechanical structures is poor, and device output energy is weak are solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of vibration energy capture, and particularly relates to an electromagnetic road domain mechanical energy conversion and collection device and an energy collection method. Background Art

[0002] With the global warming and the increasing tension of oil resources, promoting sustainable development and environmental protection has become a global consensus. In the process of seeking new energy sources, a large amount of clean energy that can be utilized is hidden in the transportation environment, including mechanical energy, thermal energy, solar energy, and wind energy. Especially the mechanical vibration energy on the road, as a common energy form, has a high conversion efficiency. Therefore, this kind of energy has great application potential in the future and is expected to replace traditional batteries to provide stable power for low-power devices and wireless sensors, etc.

[0003] When a vehicle is driving, it will cause the road to deform and generate vibrations. Under the action of heavy loads, the vertical stress on the road surface can exceed 0.5 MPa, and the vertical displacement can be close to 1 mm. In recent years, with the continuous development of micro-energy collection technology, the application of road electromagnetic energy capture technology in the road environment has been gradually promoted. The road electromagnetic energy capture technology uses the principle of Faraday electromagnetic induction to convert the mechanical vibration of the road surface into electrical energy, realizing the effective recovery and utilization of waste energy. The electromagnetic energy collection device is buried in the road surface structure, and the relative movement between the magnet and the coil inside the device is caused by the vertical displacement, thereby generating an induced voltage in the coil. Due to the requirements of the road for driving comfort and safety, the vertical displacement of the device should not exceed 3 mm, resulting in poor conversion effect between the movements of complex mechanical structures and weak output energy of the device. Summary of the Invention

[0004] The purpose of the present invention is to provide an electromagnetic road domain mechanical energy conversion and collection device and an energy collection method, which solve the problems of poor conversion effect between the movements of existing complex mechanical structures and weak output energy of the device.

[0005] The present invention is realized by the following technical solutions: The present invention discloses an electromagnetic road domain mechanical energy conversion and collection device, including a bearing plate, a housing, and a base; A transition layer is provided in the middle of the housing, and the transition layer is used to divide the inner cavity of the housing into an upper groove and a lower groove; A guide rod and a return spring are provided in the upper groove. The top end of the guide rod is connected to the lower side of the bearing plate; the return spring is wound around the guide rod. The upper end of the return spring is connected to the lower side of the bearing plate, and the lower end abuts against the transition layer; the bearing plate can move vertically relative to the housing; the guide rod is a spiral rod; A ratchet wheel, a pawl, a torsion disk and a support cylinder are provided in the lower groove. The lower end of the guide rod penetrates through the transition layer and extends into the lower groove, and is meshed and connected with the torsion disk; the torsion disk is fixed to the upper end of the support cylinder, and the pawl is mounted on the support cylinder; The ratchet wheel is mounted on the base, and the intermediate mounting shaft of the ratchet wheel is located below the support cylinder. The ratchet wheel can rotate horizontally relative to the base; A plurality of magnets are mounted on the bottom surface of the ratchet wheel, and a plurality of induction coils are mounted on the base. The centers of the magnets and the induction coils are on the same vertical line.

[0006] Further, the upper surface of the bearing plate is etched with anti-slip grooves for bearing road loads; a circular groove is prefabricated at the center of the lower surface for mounting the guide rod; A groove is prefabricated in the middle of the base for connecting the ratchet wheel; Grooves are prefabricated around the base for connecting the outer shell; A plurality of cavities are provided on the base for mounting the induction coils.

[0007] Further, the length of the guide rod is greater than the distance from the bottom surface of the bearing plate to the torsion disk and less than or equal to the distance from the bottom surface of the bearing plate to the base.

[0008] Further, the maximum stroke of the guide rod is 3 mm.

[0009] Further, the support cylinder includes a rhombic plate and a cylindrical shaft integrally connected to the rhombic plate, and the pawl is mounted on two corners of the rhombic plate.

[0010] Further, a raised platform is provided at the top of the pawl for being limited by the rhombic plate when the pawl rotates excessively; A graphene coating is provided on the contact surface between the raised platform and the rhombic plate for reducing the frictional resistance.

[0011] Further, the bearing plate, the outer shell, the base, the ratchet wheel and the pawl are formed by 3D printing.

[0012] Further, the induction coil is connected to a micro energy management circuit, and the micro energy management circuit includes a BQ25570 chip, a resistor, a rectifier bridge, a micro capacitor and an energy storage system; The induction coil is connected to the rectifier bridge and the micro capacitor for stabilizing and filtering the input voltage; The micro capacitor is connected to the input end of the BQ25570 chip, and the input voltage is adjusted to a constant value by adjusting the resistor of the chip and then enters the energy storage system.

[0013] The present invention also discloses an energy harvesting method based on the electromagnetic road domain mechanical energy conversion and collection device, including the following steps: The bearing plate is displaced downward under the action of the vehicle load, driving the guide rod and the return spring to move downward. The guide rod and the torsion disk are engaged with each other, and the pawl is synchronously driven to rotate and embed into the tooth groove. The ratchet wheel rotates horizontally under the driving force of the pawl, converting the vertical motion into a horizontal rotation; the magnet moves relative to the induction coil, and thus an induced voltage is generated in the induction coil; When the vehicle load disappears, the bearing plate and the guide rod return to their original positions upward under the action of the return spring; The guide rod and the torsion disk remain engaged, and the pawl pushes the ratchet teeth in the reverse direction, and the rotation direction of the ratchet wheel remains unchanged; The ratchet wheel rotates unidirectionally in the horizontal direction, the magnet moves relative to the induction coil, and thus an induced voltage is generated in the induction coil, and the induced voltage is collected.

[0014] Further, the output power corresponding to the induced voltage is calculated by the following formula:

[0015] where P represents the output power, ω is the angular velocity, A is the area of the wound coil, N represents the number of turns of the wire winding, B z represents the magnetic flux of the magnet in the z direction, α represents the rotation angle of the torsion disk, R coil and R e respectively represent the coil and the external load resistance, T represents the ambient temperature, is the natural exponential function.

[0016] Compared with the prior art, the present invention has the following beneficial technical effects: The present invention discloses an electromagnetic road domain mechanical energy conversion and collection device, which is divided into upper and lower grooves. A guide rod and a return spring are provided in the upper groove, and an electromagnetic power generation component, namely a ratchet wheel, a pawl, a torsion disk and a support cylinder, is provided in the lower groove. When the pressure is large enough, the lower electromagnetic power generation component will not be damaged. The device acts on the bearing plate through the road surface load, causing the bearing plate to move vertically relative to the housing. This movement is converted into the rotation of the torsion disk through the guide rod (spiral shape), and then drives the rotation of the ratchet wheel. The magnet on the ratchet wheel and the induction coil on the base move relative to each other. According to Faraday's law of electromagnetic induction, this relative movement will generate an induced current in the coil, thus realizing the conversion of mechanical energy into electrical energy. The design of the magnet and the induction coil makes the energy conversion efficiency higher because their centers are on the same vertical line, ensuring the best magnetic flux cutting effect. The present invention uses the simple component cooperation of the ratchet wheel and the pawl to increase the frequency of the single tire excitation to the one-way inertial rotation of the ratchet wheel, extend the machine-electric conversion time, and improve the output energy of the device. The design of the return spring enables the bearing plate to quickly return to its original position after being loaded, preparing for the next energy collection. The design of the pawl and the ratchet wheel ensures the one-way rotation of the torsion disk, avoiding the reverse flow of energy. In summary, the electromagnetic road domain mechanical energy conversion and collection device can effectively collect the mechanical energy generated by the road surface load and convert it into electrical energy, providing power support for low-power devices such as road lighting and environmental monitoring, and having a wide range of application prospects.

[0017] Furthermore, the anti-slip groove design on the upper surface of the bearing plate increases the friction between the road surface load and the bearing plate, improving the durability of the device.

[0018] Furthermore, a raised platform is provided at the top of the pawl to limit the excessive rotation of the pawl.

[0019] Furthermore, the application of the graphene coating reduces the frictional resistance between the pawl and the diamond plate, reduces wear, and extends the service life.

[0020] Furthermore, the micro energy management circuit connected to the induction coil can efficiently manage and store the collected electrical energy. The introduction of components such as the BQ25570 chip enables the circuit to adjust the input voltage to a constant value and store the electrical energy through the energy storage system to provide support for subsequent power requirements.

[0021] Furthermore, the components such as the bearing plate, the housing, the base, the ratchet wheel and the pawl are manufactured by using the 3D printing forming technology, improving the manufacturing precision and efficiency and reducing the manufacturing cost. Description of the Drawings

[0022] Figure 1 It is a schematic diagram of the model structure of a composite road domain mechanical energy conversion device of the present invention; Figure 2 It is a schematic diagram of the model structure of the electromagnetic power generation component; Figure 3 Cross-sectional view of the composite road area mechanical energy conversion device of the present invention; Figure 4 Bottom view of the ratchet wheel; Figure 5 Schematic structural diagram of the connection between the support cylinder and the pawl; Figure 6 Top view structural schematic diagram of the connection between the support cylinder and the pawl; Figure 7 Circuit design diagram of the micro energy management circuit.

[0023] In the above figures, 1, bearing plate; 2, outer shell; 3, base; 4, induction coil; 5, return spring; 6, ratchet wheel; 7, pawl; 8, torsion disc; 9, guide rod; 10, magnet; 11, bearing; 12, support cylinder; 13, installation groove. Specific implementation manners

[0024] In order to make the objectives, technical solutions and advantages of the present invention clearer, the following further detailed description is given in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention, that is, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments.

[0025] The components described and shown in the drawings and embodiments of the present invention can be arranged and designed in various different configurations. Therefore, the detailed description of the embodiments of the present invention provided in the following drawings is not intended to limit the scope of the present invention to be protected, but only represents a selected embodiment of the present invention. Based on the drawings and embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.

[0026] It should be noted that: the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, element, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to the process, element, method, article or device. In addition, the terms "horizontal" and "vertical" are based on the orientation and positional relationship of the device or component shown in the drawings, and are only for better describing the present invention, rather than requiring the shown device, component or device to have a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0027] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0028] As Figures 1-5As shown in the figure, the present invention provides an electromagnetic road domain mechanical energy conversion and collection device, including a bearing plate 1, a housing 2, a base 3 and a ratchet 6. The bearing plate 1 can move vertically relative to the housing 2, and the ratchet 6 can rotate horizontally relative to the base 3.

[0029] As Figure 2 shown, the upper surface of the bearing plate 1 is etched with anti-slip grooves for bearing road surface loads; a circular groove is prefabricated at the center of the lower surface for installing a guide rod 9.

[0030] The overall size of the bearing plate 1 is smaller than the inner diameter of the housing 2 for connecting with the housing 2 to play a role in vertical displacement constraint; The housing 2 is provided with a transition layer in the middle position, dividing the inner cavity of the housing 2 into an upper groove and a lower groove; a return spring 5 is placed in the upper groove, and an electromagnetic power generation component is placed in the lower groove. The electromagnetic power generation component includes a ratchet 6, a pawl 7, a torsion disc 8 and a support cylinder 12; the lower end of the guide rod 9 penetrates through the transition layer and extends into the lower groove, meshing with the torsion disc 8, and the torsion disc 8 is fixed to the upper end of the support cylinder 12.

[0031] As Figure 2 shown, the pawl 7 is sleeved on the support cylinder 12, the ratchet 6 is installed on the lower side of the support cylinder 12, the middle mounting shaft of the ratchet 6 and the support cylinder 12 are both hollow and coaxial, the torsion disc 8 is bonded to the upper surface of the support cylinder 12, and the torsion disc 8 converts the vertical movement of the bearing plate 1 into the rotation of the torsion disc 8 through meshing with the guide rod 8. The rotation of the torsion disc 8 synchronously drives the rotation of the pawl 7, and the rotation of the pawl 7 will embed in the ratchet 6 to push for horizontal rotation.

[0032] As Figure 1 shown, grooves are provided in the middle and around the base 3 for connecting the housing 2 and the ratchet 6 respectively, and a coil 4 is installed.

[0033] As Figure 3 shown, one or more mounting grooves 13 are provided on the lower bottom surface of the ratchet 6, and a magnet 10 is installed in the mounting groove 13.

[0034] As Figure 1 and Figure 2 shown, the rotational movement of the ratchet 6 relative to the base 3 is completed through a bearing 11 connection.

[0035] The key design parameters of the ratchet 6 have a module of 3 and 12 teeth.

[0036] The bearing plate 1, the housing 2 and the base 3 are selected to be 3D printed with PEEK material. The set nozzle temperature range for printing PEEK material is 380 °C, the printing speed is 40 mm / s, and the layer height is usually 0.2 mm.

[0037] The ratchet pawl 7 and the ratchet wheel 6 are made of Black resin material. When printing with Black material, the nozzle temperature range is set at 200°C, the printing speed is 50 mm / s, and the layer height is usually 0.2 mm. Using the additive manufacturing 3D printing technology, the material utilization rate is high, the processing technology is simple, and the cost is low.

[0038] The guide rod 8 is a cylinder with a spiral groove.

[0039] As Figure 2 shown, the magnet 10 on the ratchet wheel 6 and the center of the induction coil 4 are on the same vertical line.

[0040] Preferably in this embodiment, the material of the return spring 5 can be selected from stainless steel, chrome vanadium steel, and low manganese spring.

[0041] Preferably in this embodiment, the materials of the guide rod 9 and the torsion disc 8 can be selected from stainless steel, M2 high-speed steel, and M35 high-cobalt steel.

[0042] Preferably in this embodiment, the magnet material 10 is selected from neodymium iron boron magnet, ceramic magnet, graphite magnet, and alnico magnet.

[0043] Preferably in this embodiment, the material of the induction coil 4 is selected as enameled copper material with low internal resistance, and the diameter is between 0.1 mm and 0.5 mm.

[0044] More preferably, the induction coil 4 is connected with a micro energy management circuit. As Figure 7 shown, the micro energy management circuit includes a BQ25570 chip, resistors, a rectifier bridge, micro capacitors, and an energy storage system; the induction coil 4 is connected with the rectifier bridge and the micro capacitors, which is used to stabilize the voltage and filter the input voltage; the micro capacitors are connected to the input end of the BQ25570 chip, and the input voltage is adjusted to a constant value by adjusting the resistors of the chip and then enters the energy storage system.

[0045] The energy storage system consists of 300 mAh lithium ions, and the set voltage thresholds of the chip storage channel (VBAT) and the output channel (VOUT) are 4.2 V and 3.6 V respectively.

[0046] The maximum stroke of the guide rod 9 is 3 mm, and the 3.0 mm input displacement meets the road surface flatness requirements.

[0047] As Figure 5 shown, the support cylinder 2 includes a diamond plate and a cylindrical shaft integrally connected to the diamond plate, and the ratchet pawl 7 is installed at two corners of the diamond plate.

[0048] As Figure 5 and Figure 6 shown, the top of the ratchet pawl 7 is provided with a raised platform 71, which is used to be limited by the diamond plate when the ratchet pawl 7 rotates excessively, preventing the ratchet pawl 7 from entering below the diamond plate when rotating in the reverse direction.

[0049] Preferably, a graphene coating is provided on the contact surface between the raised platform 71 and the diamond plate to reduce the frictional resistance.

[0050] The present invention provides an energy harvesting method, which is implemented based on an electromagnetic road domain mechanical energy conversion and collection device, and includes the following steps: (I) The bearing plate 1 is displaced downward under the action of the vehicle load; (II) The downward displacement of the bearing plate 1 synchronously drives the guide rod 9 and the return spring 5 to move downward. The guide rod 9 and the torsion disk 8 are engaged with each other, and synchronously drive the pawl 7 to rotate and engage with the tooth groove. The ratchet wheel 6 rotates horizontally under the driving force of the pawl 7, converting the vertical movement into a horizontal movement; the magnet 10 moves relative to the induction coil 4, and thus an induced voltage is generated in the induction coil 4; (III) After the vehicle load disappears, the bearing plate 1 and the guide rod 9 return to their original positions upward under the action of the return spring 5; (IV) The guide rod 9 and the torsion disk 8 remain engaged, and the pawl 7 pushes out the internal teeth of the ratchet wheel 6 in the reverse direction, and the rotation direction of the ratchet wheel remains; (V) The ratchet wheel 6 rotates in the positive and negative directions in the horizontal direction, moves relative to the induction coil 4, and thus an induced voltage is generated in the induction coil 4.

[0051] Working principle: The present invention is based on Faraday's law of electromagnetic induction. By rotating the ratchet wheel, the relative rotation between the magnet 10 and the coil 4 is achieved, and the mechanical energy is converted into electrical energy and stored.

[0052] During specific use, it is buried at the wheel track of the asphalt pavement, and the upper surface of the bearing plate 1 is flush with the road surface. When the vehicle load acts on the bearing plate, the bearing plate 1 presses down the guide rod 9 downward against the resistance of the return spring 5, so that the guide rod 9 meshes with the torsion disk 8. The rotation of the torsion disk 8 will give a driving force to the pawl 7, and the pawl 7 unfolds and engages with the ratchet teeth in the ratchet wheel 6, and then pushes the ratchet wheel 6 to rotate, causing the magnet 10 and the coil 4 to move relative to each other, and an induced voltage is output in the induction coil 4. The output energy can be calculated according to formula (5).

[0053] After the vehicle load disappears, the bearing plate 1 returns upward under the action of the return spring 5, and the guide rod 9 moves upward synchronously. The reverse rotation of the torsion disk 8 will synchronously drive the reverse movement of the pawl 7. Under the cooperation of the bearing 11, the reverse rotation of the pawl 7 will withdraw from the ratchet teeth, and the ratchet wheel 6 still rotates in one direction. Therefore, when the vehicle continuously passes over the top surface of the device, the ratchet wheel 6 will rotate continuously and an induced voltage will be generated in the induction coil 4.

[0054] According to Faraday's law of electromagnetic induction, the induced voltage of each induction coil 4 U is: (1) When the ratchet 6 rotates, the axis of the induction coil 4 located on the base 3 is perpendicular to the surface of the magnet 10. Therefore, only the magnetic flux in the z axial direction needs to be considered. At the t moment, the transient magnetic flux passing through the induction coil 4 is: (2) Substituting equation (1) into equation (2) and further simplifying, we get U : (3) The output power of the corresponding load P is: (4) Considering the influence of road surface temperature change on the electromagnetic power generation performance, combining the power and temperature relationship, and adding a temperature correction term, the output power is: (5) Among them, P represents the output power, ω is the angular velocity, A is the area of the wound coil, N represents the number of turns of the wire winding, B z represents the magnetic flux of the magnet in the z direction, α represents the rotation angle of the torsion disk 8, R coil and R e respectively represent the coil and the external load resistance, and T represents the ambient temperature.

[0055] The guide rod 9 and the torsion disk 8 must have the same displacement. Otherwise, relative sliding will occur at the contact part between the guide rod 9 and the torsion disk 8. Therefore, the relationship between the vertical displacement of the guide rod 9 and the rotational displacement of the torsion disk 8 can be expressed as: x = rα, and the angle α can be obtained.

[0056] Among them, x is the rotational displacement and r is the radius of the guide rod 9.

[0057] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. For the same and similar parts among the embodiments, reference can be made to each other.

[0058] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: the specific implementation manners of the present invention can still be modified or equivalently replaced, and any modification or equivalent replacement that does not depart from the spirit and scope of the present invention shall be covered by the protection scope of the claims of the present invention.

Claims

1. An electromagnetic road area mechanical energy conversion and collection device, characterized in that, It includes a bearing plate (1), a housing (2) and a base (3); A transition layer is provided in the middle of the housing (2), and the transition layer is used to divide the inner cavity of the housing (2) into an upper groove and a lower groove; A guide rod (9) and a return spring (5) are provided in the upper groove. The top end of the guide rod (9) is connected to the lower side of the bearing plate (1); the return spring (5) is wound around the guide rod (9). The upper end of the return spring (5) is connected to the lower side of the bearing plate (1), and the lower end abuts against the transition layer; the bearing plate (1) can move vertically relative to the housing (2); the guide rod (9) is a spiral rod; A ratchet wheel (6), a ratchet pawl (7), a torsion disk (8) and a support cylinder (12) are provided in the lower groove. The lower end of the guide rod (9) passes through the transition layer and extends into the lower groove, and is meshed and connected with the torsion disk (8); the torsion disk (8) is fixed to the upper end of the support cylinder (12), and the ratchet pawl (7) is installed on the support cylinder (12); The ratchet wheel (6) is installed on the base (3), and the middle mounting shaft of the ratchet wheel (6) is located below the support cylinder (12), and the ratchet wheel (6) can rotate horizontally relative to the base (3); A plurality of magnets (10) are installed on the bottom surface of the ratchet wheel (6), and a plurality of induction coils (4) are installed on the base (3). The centers of the magnets (10) and the induction coils (4) are on the same vertical line.

2. The electromagnetic road domain mechanical energy conversion and collection device according to claim 1, characterized in that The upper surface of the bearing plate (1) is etched with anti-slip grooves for bearing the road surface load; a circular groove is prefabricated at the center of the lower surface for installing the guide rod (9); A groove is prefabricated in the middle of the base (3) for connecting the ratchet wheel (6); Grooves are prefabricated around the base (3) for connecting the housing (2); A plurality of cavities are provided on the base (3) for installing the induction coils (4).

3. The electromagnetic road domain mechanical energy conversion and collection device according to claim 1, characterized in that, The length of the guide rod (9) is greater than the distance from the bottom surface of the bearing plate (1) to the torsion disk (8), and less than or equal to the distance from the bottom surface of the bearing plate (1) to the base (3).

4. An electromagnetic road domain mechanical energy conversion and collection device according to claim 1, characterized in that, The maximum stroke of the guide rod (9) is 3 mm.

5. An electromagnetic road domain mechanical energy conversion and collection device according to claim 1, characterized in that, The support cylinder (12) includes a diamond plate and a cylindrical shaft integrally connected to the diamond plate. The ratchet pawl (7) is installed at two corners of the diamond plate.

6. The electromagnetic road domain mechanical energy conversion and collection device according to claim 5, characterized in that, A raised platform (71) is provided at the top of the ratchet pawl (7) for being limited by the diamond plate when the ratchet pawl (7) rotates excessively; A graphene coating is provided on the contact surface between the raised platform (71) and the diamond plate for reducing the friction resistance.

7. An electromagnetic road domain mechanical energy conversion and collection device according to claim 1, characterized in that, The bearing plate (1), the housing (2), the base (3), the ratchet wheel (6) and the ratchet pawl (7) are formed by 3D printing; 8. An electromagnetic road domain mechanical energy conversion and collection device according to claim 1, characterized in that, The induction coil (4) is connected to a micro energy management circuit. The micro energy management circuit includes a BQ25570 chip, a resistor, a rectifier bridge, a micro capacitor and an energy storage system; The induction coil (4) is connected to the rectifier bridge and the micro capacitor for stabilizing and filtering the input voltage; The micro capacitor is connected to the input end of the BQ25570 chip. After adjusting the resistance of the chip, the input voltage is adjusted to a constant value and then enters the energy storage system.

9. An energy harvesting method for the electromagnetic road domain mechanical energy conversion and collection device according to any one of claims 1-8, characterized in that, It includes the following steps: The bearing plate (1) is displaced downward under the action of the vehicle load, driving the guide rod (9) and the return spring (5) to move downward. The guide rod (9) and the torsion disc (8) are meshed with each other, synchronously driving the pawl (7) to rotate and engage into the tooth groove. The ratchet wheel (6) rotates horizontally under the driving force of the pawl (7), converting the vertical motion into a horizontal rotation; the magnet (10) moves relative to the induction coil (4), and thus an induced voltage is generated in the induction coil (4). When the vehicle load disappears, the bearing plate (1) and the guide rod (9) return to their original positions upward under the action of the return spring (5). The guide rod (9) and the torsion disc (8) remain meshed, and the pawl (7) pushes the teeth of the ratchet wheel (6) out in the reverse direction, and the rotation direction of the ratchet wheel (6) remains unchanged. The ratchet wheel (6) rotates unidirectionally in the horizontal direction, the magnet (10) moves relative to the induction coil (4), and thus an induced voltage is generated in the induction coil (4), collecting the induced voltage.

10. A method for energy harvesting according to claim 9, characterized in that, The output power corresponding to the induced voltage is calculated by the following formula: Among them, P represents the output power, ω is the angular velocity, A is the area of the wound coil, N represents the number of turns of the wire winding, B z represents the magnetic flux of the magnet in the z direction, α represents the rotation angle of the torsion disk (8), R coil and R e respectively represent the coil and the external load resistance, T represents the ambient temperature, is the natural exponential function.

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