A kind of low-frequency environment suitable for multiple nutation power generation device

Abstract

The present application relates to a kind of low-frequency environment suitable for many kinds of wobble power generation device, belong to new energy field.By shell, lid, outer wheel shaft, rocker, frequency modulation spring, frequency modulation block, circuit board, rotor, PZT vibrator and coil are constituted, the wire frame is equipped on the two side walls of shell, another two side walls are equipped with slot;Outer wheel shaft is constituted by outer shaft, outer small wheel and outer large wheel;Rocker is constituted by swing axle, swing disc and swing rod, swing axle is equipped with shaft plane;Rotor is constituted by magnetic cylinder and inner wheel shaft, and inner wheel is equipped on inner wheel shaft;Lid is installed on shell, and the plugboard of lid is implanted in slot and is formed with shell installation hole;Coil is installed on wire frame, and rotor is installed in wire frame cavity;Outer shaft and swing axle are installed on shell side wall, and outer small wheel and swing disc constitute outer transmission pair, and outer large wheel and inner wheel constitute inner transmission pair;Frequency modulation block is installed on rocker, and frequency modulation spring is arranged between rocker and shell;PZT vibrator is arranged between shell and lid and rocker;When rocker swings, coil cuts magnetic line to generate electricity, and PZT vibrator is bent to generate electricity.

Description

Technical Field

[0001] This invention belongs to the field of new energy technology, specifically relating to a oscillation power generation device suitable for various low-frequency environments, used for oscillation and vibration power generation in ultra-low frequency environments such as vehicle-mounted, ship-mounted, wave-borne, and human-borne environments. Background Technology

[0002] Research on constructing micro-power generation devices using piezoelectric, electromagnetic, and triboelectric principles has become a hot topic both domestically and internationally. The aim is to replace batteries in powering remote sensing, embedded monitoring systems, and portable low-power electronic products. Currently, more than ten types of environmental energy can be effectively recovered using these principles, such as environmental vibration energy, rotational kinetic energy from machine tools, vehicles, engines, and the spindles and bearings of power generation devices, the kinetic energy of human limbs and organs, and fluid energy from waves, wind, and rivers. From a practical application perspective, the various power generation devices proposed still face many technical bottlenecks. Common problems are summarized as follows: Low power generation capacity and low energy density per unit volume It has limited environmental adaptability, meaning it has low adaptability to fluid flow rate, vibration frequency and amplitude, and rotational speed. Low reliability, for example, piezoelectric ceramics are easily damaged by excessive environmental vibration, and sliding friction power generation devices are easily damaged by friction and wear between friction pairs, etc. Summary of the Invention

[0003] The present invention provides a swing power generation device suitable for various low-frequency environments, which consists of a housing, a cover, an outer wheel axle, a swinging device, a frequency tuning spring, a frequency tuning block, a circuit board, a rotor, a PZT oscillator, and a coil. The circuit board is equipped with energy harvesting, energy management, and energy storage units.

[0004] The bottom wall and side walls of the housing form a housing cavity. The side walls are perpendicular to the bottom wall and include a left wall, a right wall, a front wall, and a rear wall. A housing base plate is provided on the inner side of the bottom wall. Wire frames are provided on two opposite side walls, and slots are provided on two other opposite side walls. The wire frames are symmetrically arranged on both sides of the housing base plate. The wire frames are located on the left and right walls, and together with their respective side walls, they form a wire frame cavity. Horizontal positioning grooves are provided on the two opposite side walls of the wire frame cavity, meaning the symmetrical center line of the positioning grooves is located in the horizontal plane. Slots are located on the front and rear walls. The lower end of the slot has a large lower groove and two small lower grooves, both of which are semi-circular grooves. The small lower grooves are symmetrically arranged on both sides of the large lower groove.

[0005] The cover plate of the machine cover is provided with two insert plates, two positioning beams and a cover plate. The insert plates, positioning beams and cover plate are located on the same side of the cover plate. The insert plates are symmetrically arranged on the front and rear sides of the cover plate, and the positioning beams are symmetrically arranged on the left and right sides of the cover plate. The insert plates are perpendicular to the cover plate. The end of the insert plate is provided with a large upper groove and two small upper grooves. Both the large upper groove and the small upper grooves are semi-circular grooves.

[0006] The outer axle consists of an outer shaft, a small outer wheel, and two large outer wheels. The outer shaft, small outer wheel, and large outer wheels are coaxial, and the large outer wheels are symmetrically arranged on both sides of the small outer wheel. The small outer wheel and the large outer wheel are fixedly installed on the outer shaft as independent components, or the small outer wheel and the large outer wheel are directly machined on the outer shaft.

[0007] The rocker consists of a pendulum shaft, a pendulum plate, and a pendulum rod. The outer edge of the pendulum plate is provided with a friction layer or gear teeth, which cover the outer edge or part of the outer edge of the pendulum plate. The pendulum plate is coaxial with the pendulum shaft, and the pendulum rod is perpendicular to the pendulum shaft. One end of the pendulum rod is fixed to the pendulum shaft or the pendulum plate. The pendulum plate is located in the middle of the pendulum shaft, and the pendulum shaft on both sides of the pendulum plate is provided with mutually parallel axial planes.

[0008] The rotor consists of a magnetic cylinder and an inner wheel shaft. The magnetic cylinder is magnetized radially, and its magnetic poles are radially polarized, i.e., one half-ring is the N pole and the other half-ring is the S pole. The magnetic cylinder is fixedly installed in the middle of the inner wheel shaft and is fixed to the inner wheel shaft by adhesive bonding. The inner wheel shaft is provided with an inner wheel, and there are one or two inner wheels on the inner wheel shaft. The two inner wheels are symmetrically arranged on both sides of the magnetic cylinder. The inner wheel is an independent component fixedly installed on the inner wheel shaft or is a part directly machined from the inner wheel shaft. The outer edge of the inner wheel is provided with a friction layer or gear teeth.

[0009] The circuit board is mounted on the cover with screws, and the circuit board is mounted on the positioning beam of the cover with screws; the cover is mounted on the housing with screws, the cover plate of the cover is installed on the port of the housing cavity, the side of the positioning beam of the cover abuts against the side wall of the housing, the insert plate is inserted into the slot, the insert plate and the housing form a mounting hole, the large upper slot and the large lower slot are installed opposite each other to form a large mounting hole, and the small upper slot and the small lower slot are installed opposite each other to form a small mounting hole.

[0010] The coil is mounted on the wire frame, and the coil is sleeved on the outside of the wire frame and glued in place; the rotor is mounted inside the wire frame cavity and can rotate, and the rotor is mounted in the wire frame cavity via an inner wheel axle, with both ends of the inner wheel axle placed in positioning grooves; the rotor is located inside the coil and the wire frame cavity, the wire frame separates the rotor and the coil, and the coil axis is perpendicular to the rotor axis; the coil and the magnetic cylinder inside it constitute an electromagnetic power generation unit.

[0011] The outer shaft of the outer wheel axle and the swing shaft of the rocker are mounted on the side wall of the housing via the insert plate of the machine cover. Both ends of the outer shaft and the swing shaft are mounted on the side wall of the housing. The ends of the outer shaft and the swing shaft are respectively fitted into the small mounting hole and the large mounting hole. The outer small wheel of the outer wheel axle contacts the swing disk of the rocker and forms an outer transmission pair. The outer large wheel of the outer wheel axle contacts the inner wheel of the rotor and forms an inner transmission pair. The inner transmission pair and the outer transmission pair are gear transmission pairs or friction transmission pairs.

[0012] PZT oscillators are installed between the housing and cover and the rocker. The PZT oscillator is made of a piezoelectric sheet and a substrate bonded together. The PZT oscillator and the rocker constitute a piezoelectric power generation unit. When the rocker swings, the PZT oscillator bends and deforms to generate electricity. One end of the PZT oscillator is fixed to the bottom wall of the housing or the cover plate, and the other end rests against the axial plane of the swing shaft. One end of the PZT oscillator is fixed to the housing base plate of the bottom wall of the housing or the cover base plate of the cover plate by screws and pressure plate e. The substrate of the free end of the PZT oscillator is in contact with the axial plane of the swing shaft and there is no phase or force between the two. That is, when not working, the PZT oscillator is in a straight free state.

[0013] A frequency modulation block is installed on the rocker, and the frequency modulation block is installed on the rocker's swing arm or swing plate by screws, riveting, or welding; a frequency modulation spring is provided between the rocker or frequency modulation block and the housing, and the frequency modulation spring is located on both sides of the rocker, with one end of the frequency modulation spring fixed to the inner wall of the housing and the other end fixed to the rocker's swing arm or frequency modulation block; when collecting horizontal vibration energy, the frequency modulation spring is symmetrically arranged on both sides of the rocker, and when collecting vertical vibration energy, the frequency modulation spring is asymmetrically arranged on both sides of the rocker; the installation position of the frequency modulation block and the frequency modulation spring is adjustable.

[0014] In this invention, the electromagnetic power generation unit and the piezoelectric power generation unit are connected to the circuit board via independent wire groups and rectifier bridges.

[0015] In this invention, the housing, cover, rocker, inner axle, and outer axle are all made of non-ferromagnetic materials, including stainless steel, aluminum alloy, copper, and other metals and polymer plastics.

[0016] When vibrations occur in the environment, the rocker is subjected to the combined action of the inertial force of the frequency modulation block, the elastic force of the frequency modulation spring, and the elastic force of the PZT oscillator, causing it to oscillate back and forth around the pendulum axis. The rocker is then forced to rotate the rotor and magnetic cylinder through the external and internal transmission pairs, and the magnetic poles of the magnetic cylinder are reversed. The direction of the magnetic poles of the magnetic cylinder and the magnetic flux density and magnetic field strength passing through the coil change. The coil cuts the magnetic lines of force, and the electromagnetic power generation unit generates electricity. At the same time, the axial plane of the pendulum axis forces the PZT oscillator to bend and deform. The PZT oscillator converts mechanical energy into electrical energy, and the piezoelectric power generation unit generates electricity. The electrical energy generated by the electromagnetic power generation unit and the piezoelectric power generation unit is transmitted to the circuit board through wires. After conversion and processing, the electrical energy is stored or output.

[0017] In this invention, the rocker forces the rotor to rotate more than one revolution in a single motion, and the reasonable relationship between the relevant parameters is: R≥2πR x r / (QR) d ), where: Q is the standard swirl angle of the plate, R, R d R x and r are the radii of the balance wheel, the outer large wheel, the outer small wheel, and the inner wheel, respectively. The radii of the balance wheel, the outer large wheel, the outer small wheel, and the inner wheel refer to the outer edge radius of the friction wheel or the pitch circle radius of the gear.

[0018] In this invention, the deformation of the PZT oscillator is less than its allowable value, and the reasonable relationship between the relevant parameters is: δ≤R1(1-cosQ2), where δ is the allowable deformation of the PZT oscillator, R1 is the radius of the pendulum axis, and Q2 is half of the central angle corresponding to the axis plane.

[0019] In this invention, the rocker is made of lightweight non-metallic material, and the frequency modulation block is made of copper. The moment of inertia of the rocker is much smaller than that of the frequency modulation block. The natural frequency of the power generation device can be adjusted by the installation position of the frequency modulation block and the frequency modulation spring, i.e., calculated by the following formula: In the formula: ζ is the equivalent damping ratio, K is the stiffness of the frequency tuning spring, k1 and k2 are the stiffnesses of the PZT oscillators on the upper and lower sides of the pendulum shaft, respectively, Y is the installation distance of the frequency tuning spring, that is, the distance from the fixed end of the frequency tuning spring to the center of the pendulum shaft, R1 is the radius of the pendulum shaft, Q1 is the angle between the frequency tuning spring and the pendulum rod, Q2 is half of the central angle corresponding to the axis plane, M is the mass of the frequency tuning block, X is the installation distance of the frequency tuning block and the distance from the center of mass of the frequency tuning block to the center of the pendulum shaft, and η is the correction coefficient, which is related to the equivalent damping and equivalent stiffness of the system.

[0020] In this invention, to obtain better power generation capability, the parameter relationship between the coil and the magnetic cylinder is as follows: L / D=2±1, T / D=0.6±0.4, V / D=2.25±0.75, U / D=1.3±0.7, where D is the diameter of the magnetic cylinder, L is the length of the magnetic cylinder, T, V and U are the wall thickness, radial width and height of coil x, respectively, and the radial width of coil x refers to the width of the coil along the radial direction of the magnetic cylinder.

[0021] This invention organically combines two different power generation units, resulting in high energy density per unit volume and strong power generation capacity. The structure and principle of its electromagnetic power generation unit are completely different from existing electromagnetic power generation devices: the rocker forces the radially polarized magnetic cylinder inside the coil to roll through the outer wheel axle, thereby changing the magnetic pole direction of the magnetic cylinder and the magnetic field strength passing through the coil. The coil cuts the magnetic lines of force to generate electricity. During the rolling process of the magnetic cylinder inside the coil, the magnetic field gradient caused by the change of the magnetic pole of the magnetic cylinder is large, so the power generation capacity is strong, the output voltage is high, and the power is large.

[0022] Advantages and features: It organically combines two power generation methods, resulting in high energy density per unit volume; it has a frequency boosting function, making it suitable for low-amplitude, low-frequency vibration environments; it has a simple structure and the frequency is easy to adjust; it changes the magnetic flux and field strength through the coil by changing the magnetic poles of the built-in magnetic cylinder, resulting in strong power generation capacity; the deformation of the piezoelectric generator oscillator is controllable, ensuring high reliability. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the power generation device in a preferred embodiment of the present invention; Figure 2 yes Figure 1 AA section view; Figure 3 This is a schematic diagram of the casing structure in a preferred embodiment of the present invention; Figure 4 yes Figure 3 Top view; Figure 5 yes Figure 3 The left view; Figure 6 This is a schematic diagram of the structure of the cover in a preferred embodiment of the present invention; Figure 7 yes Figure 6 A bottom view; Figure 8 This is a schematic diagram of the outer wheel shaft in a preferred embodiment of the present invention; Figure 9 This is a schematic diagram of the structure of the rocker in a preferred embodiment of the present invention; Figure 10 yes Figure 9 The left view; Figure 11 This is a schematic diagram of the rotor structure in a preferred embodiment of the present invention. Detailed Implementation

[0024] The present invention provides a swing power generation device suitable for various low-frequency environments, which consists of a housing a, a cover b, an outer wheel axle c, a swinger d, a frequency tuning spring k, a frequency tuning block m, a circuit board p, a rotor W, a PZT oscillator i, and a coil x. The circuit board p is provided with energy collection, energy management, and energy storage units.

[0025] The bottom wall a1 and side walls of the housing a form a cavity a0. The side walls are perpendicular to the bottom wall a1. The side walls include a left wall a2, a right wall a3, a front wall a4, and a rear wall a5. A housing base plate a6 is provided on the inner side of the bottom wall a1. Wire frames a7 are provided on two opposite side walls, and slots a10 are provided on two other opposite side walls. The wire frames a7 are symmetrically arranged on both sides of the housing base plate a6. The wire frames a7 are located on the left wall a2 and the right wall a3. 7 and the shell sidewall together form a wireframe cavity a8. The two opposite sidewalls of the wireframe cavity a8 are provided with horizontal positioning grooves a9, that is, the symmetrical center line of the positioning grooves a9 is located in the horizontal plane. The slot a10 is located on the front wall a4 and the rear wall a5 of the shell. The lower end of the slot a10 is provided with a large lower groove a11 and two small lower grooves a12. The large lower groove a11 and the small lower grooves a12 are both semi-circular grooves. The small lower grooves a12 are symmetrically arranged on both sides of the large lower groove a11.

[0026] The cover plate b1 of the machine cover b is provided with two insert plates b2, two positioning beams b3 and a cover seat plate b4. The insert plates b2, positioning beams b3 and cover seat plate b4 are located on the same side of the cover plate b1. The insert plates b2 are symmetrically arranged on the front and rear sides of the cover seat plate b4, and the positioning beams b3 are symmetrically arranged on the left and right sides of the cover seat plate b4. The insert plates b2 are perpendicular to the cover plate b1. The end of the insert plate b2 is provided with a large upper groove b5 and two small upper grooves b6. The large upper groove b5 and the small upper grooves b6 are both semi-circular grooves.

[0027] The outer shaft c consists of an outer shaft c1, a small outer wheel c2, and two large outer wheels c3. The outer shaft c1, the small outer wheel c2, and the large outer wheels c3 are coaxial, and the large outer wheels c3 are symmetrically arranged on both sides of the small outer wheel c2. The small outer wheel c2 and the large outer wheels c3 are fixedly installed on the outer shaft c1 as independent components, or the small outer wheel c2 and the large outer wheels c3 are directly machined on the outer shaft c1.

[0028] The rocker d consists of a rocker shaft d1, a rocker plate d2, and a rocker arm d3. The outer edge of the rocker plate d2 is provided with a friction layer or gear teeth d4, which cover the outer edge or part of the outer edge of the rocker plate d2. The rocker plate d2 is coaxial with the rocker shaft d1, and the rocker arm d3 is perpendicular to the rocker shaft d1. One end of the rocker arm d3 is fixed to the rocker shaft d1 or the rocker plate d2. The rocker plate d2 is located in the middle of the rocker shaft d1, and parallel axial planes d5 are provided on the rocker shaft d1 on both sides of the rocker plate d2.

[0029] The rotor W consists of a magnetic cylinder y and an inner wheel shaft z. The magnetic cylinder y is radially magnetized, and its magnetic poles are radially polarized, i.e., one half-ring is the N pole and the other half-ring is the S pole. The magnetic cylinder y is fixedly installed in the middle of the inner wheel shaft z and is fixed to the inner wheel shaft z by bonding. The inner wheel shaft z is provided with an inner wheel z1, and there are one or two inner wheels z1 on the inner wheel shaft z. The two inner wheels z1 are symmetrically arranged on both sides of the magnetic cylinder y. The inner wheel z1 is an independent component fixedly installed on the inner wheel shaft z or is a part directly machined from the inner wheel shaft z. The outer edge of the inner wheel z1 is provided with a friction layer or gear teeth.

[0030] Circuit board p is screwed onto cover b, and circuit board p is screwed onto positioning beam b3 of cover b; cover b is screwed onto housing a, cover plate b1 of cover b is installed on the port of housing cavity a0, positioning beam b3 of cover b rests against the side wall of housing, insert plate b2 is inserted into slot a10, insert plate b2 and housing a form a mounting hole, large upper slot b5 and large lower slot a11 are installed opposite each other to form a large mounting hole, small upper slot b6 and small lower slot a12 are installed opposite each other to form a small mounting hole.

[0031] Coil x is mounted on frame a7, and coil x is fitted on the outside of frame a7 and glued in place; rotor W is mounted inside frame cavity a8 and can rotate, rotor W is mounted in frame cavity a8 via inner wheel axle z, and the two ends of inner wheel axle z are placed in positioning groove a9; rotor W is located inside coil x and frame cavity a8, frame a7 separates rotor W and coil x, and coil axis q is perpendicular to rotor axis j; coil x and its internal magnetic cylinder y constitute an electromagnetic power generation unit.

[0032] The outer shaft c1 of the outer wheel axle c and the swing shaft d1 of the rocker d are mounted on the side wall of the housing a. Both ends of the outer shaft c1 and the swing shaft d1 are mounted on the side wall of the housing a. The ends of the outer shaft c1 and the swing shaft d1 are respectively fitted into the small mounting hole and the large mounting hole. The outer small wheel c2 of the outer wheel axle c contacts the swing disk d2 of the rocker d and forms an external transmission pair. The outer large wheel c3 of the outer wheel axle c contacts the inner wheel z1 of the rotor W and forms an internal transmission pair. The internal transmission pair and the external transmission pair are gear transmission pairs or friction transmission pairs.

[0033] PZT oscillators i are provided between the housing a and the cover b and the rocker d. The PZT oscillator i is made of a piezoelectric sheet and a substrate bonded together. The PZT oscillator i and the rocker d constitute a piezoelectric power generation unit. When the rocker d swings, the PZT oscillator i bends and deforms to generate electricity. One end of the PZT oscillator i is fixed to the bottom wall a1 of the housing or the cover b1, and the other end rests against the axial plane d5 of the swing shaft d1. One end of the PZT oscillator i is fixed to the housing seat plate a6 of the bottom wall a1 or the cover seat plate b4 of the cover b1 by screws and pressure plate e. The substrate of the free end of the PZT oscillator i is in contact with the axial plane d5 of the swing shaft d1 and there is no phase or force between the two. That is, when not working, the PZT oscillator i is in a straight free state.

[0034] A frequency modulation block m is installed on the rocker d. The frequency modulation block m is installed on the rocker rod d3 or the rocker plate d2 of the rocker d by screws, riveting or welding. A frequency modulation spring k is provided between the rocker d or the frequency modulation block m and the housing a. The frequency modulation spring k is located on both sides of the rocker d. One end of the frequency modulation spring k is fixed to the inner wall of the housing a and the other end is fixed to the rocker rod d3 or the frequency modulation block m of the rocker d. When collecting horizontal vibration energy, the frequency modulation spring k is symmetrically arranged on both sides of the rocker d. When collecting vertical vibration energy, the frequency modulation spring k is asymmetrically arranged on both sides of the rocker d. The installation positions of the frequency modulation block m and the frequency modulation spring k are adjustable.

[0035] In this invention, the electromagnetic power generation unit and the piezoelectric power generation unit are connected to the circuit board p via independent wire groups and rectifier bridges.

[0036] In this invention, the housing a, the cover b, the rocker d, the inner wheel axle z, and the outer wheel axle c are all made of non-ferromagnetic materials, including stainless steel, aluminum alloy, copper and other metals, as well as polymer plastics.

[0037] When vibrations occur in the environment, the rocker d is subjected to the combined action of the inertial force of the frequency modulation block m, the elastic force of the frequency modulation spring k, and the elastic force of the PZT oscillator i, and swings back and forth around the pendulum axis d1. The rocker d is then forced to rotate the rotor W and the magnetic cylinder y through the external and internal transmission pairs, and the magnetic poles of the magnetic cylinder y are reversed. The direction of the magnetic poles of the magnetic cylinder y and the magnetic flux density and magnetic field strength passing through the coil change. The coil x cuts the magnetic lines of force, and the electromagnetic power generation unit generates electricity. At the same time, the axial plane d5 of the pendulum axis d1 forces the PZT oscillator i to bend and deform. The PZT oscillator i converts mechanical energy into electrical energy, and the piezoelectric power generation unit generates electricity. The electrical energy generated by the electromagnetic power generation unit and the piezoelectric power generation unit is transmitted to the circuit board p through wires. After conversion processing, the electrical energy is stored or output.

[0038] In this invention, the single motion of the rocker d forces the rotor W to rotate more than one revolution, and the reasonable relationship between the relevant parameters is: R≥2πR x r / (QR) d ), where: Q is the normal swing angle of the oscillating plate d2, R, R d R x and r are the radii of the oscillating plate d2, the outer large wheel c3, the outer small wheel c2, and the inner wheel z1, respectively. The radii of the oscillating plate d2, the outer large wheel c3, the outer small wheel c2, and the inner wheel z1 refer to the outer edge radius of the friction wheel or the pitch circle radius of the gear.

[0039] In this invention, the deformation of the PZT oscillator i is less than its allowable value, and the reasonable relationship between the relevant parameters is: δ≤R1(1-cosQ2), where δ is the allowable deformation of the PZT oscillator i, R1 is the radius of the pendulum axis d1, and Q2 is half of the central angle corresponding to the axis plane d5.

[0040] In this invention, the rocker d is made of lightweight non-metallic material, and the frequency modulation block m is made of copper. The moment of inertia of the rocker d is much smaller than that of the frequency modulation block m. The natural frequency of the power generation device can be adjusted by the installation positions of the frequency modulation block m and the frequency modulation spring k, i.e., calculated by the following formula: In the formula: ζ is the equivalent damping ratio, K is the stiffness of the frequency modulation spring k, k1 and k2 are the stiffnesses of the PZT oscillators i on the upper and lower sides of the pendulum shaft d1, Y is the installation distance of the frequency modulation spring k, that is, the distance from the fixed end of the frequency modulation spring k to the center of the pendulum shaft d1, R1 is the radius of the pendulum shaft d1, Q1 is the angle between the frequency modulation spring k and the pendulum rod d3, Q2 is half of the central angle corresponding to the axis plane d5, M is the mass of the frequency modulation block m, X is the installation distance of the frequency modulation block m and the distance from the center of mass of the frequency modulation block m to the center of the pendulum shaft d1, and η is the correction coefficient, which is related to the equivalent damping and equivalent stiffness of the system.

[0041] In this invention, to obtain better power generation capability, the parameter relationship between coil x and magnetic cylinder y is: L / D=2±1, T / D=0.6±0.4, V / D=2.25±0.75, U / D=1.3±0.7, where D is the diameter of magnetic cylinder y, L is the length of magnetic cylinder y, T, V and U are the wall thickness, radial width and height of coil x respectively, and the radial width of coil x refers to the width of coil x along the radial direction of magnetic cylinder y.

[0042] This invention organically combines two different power generation units, resulting in high energy density per unit volume and strong power generation capacity. The structure and principle of its electromagnetic power generation unit are completely different from existing electromagnetic power generation devices: the rocker d forces the radially polarized magnetic cylinder y inside the coil x to roll via the outer wheel axle c, thereby changing the magnetic pole direction of the magnetic cylinder y and the magnetic field strength passing through the coil x. The coil x cuts the magnetic lines of force to generate electricity. During the rolling process of the magnetic cylinder y inside the coil x, the magnetic field gradient caused by the change of the magnetic pole of the magnetic cylinder y is large, so the power generation capacity is strong, and the output voltage and power are large.

Claims

1. A oscillating power generation device suitable for various low-frequency environments, comprising a housing, a cover, an outer axle, a rocker, a frequency-modulating spring, a frequency-modulating block, a circuit board, a rotor, a PZT oscillator, and a coil; the housing has wire frames on two opposite side walls and slots on the other two opposite side walls, the wire frames and the side walls forming a wire frame cavity, and positioning grooves on two opposite side walls of the wire frame cavity; the outer axle consists of an outer shaft, a small outer wheel, and a large outer wheel; the rocker consists of a swing shaft, a swing plate, and a swing rod, the swing shaft having parallel axial planes; a frequency-modulating block is mounted on the rocker, and a frequency-modulating spring is provided between the rocker or the frequency-modulating block and the housing; the cover is mounted on the housing, and the cover's insert plate is inserted into a slot and forms a mounting hole with the housing; the outer shaft and the swing shaft are mounted on the side walls of the housing, the small outer wheel and the swing plate forming an external transmission pair, and the large outer wheel and the inner wheel forming an internal transmission pair; characterized in that: The rotor consists of a radially polarized magnetic cylinder and an inner wheel shaft, with an inner wheel on the inner wheel shaft; the coil is mounted on the wire frame, and the rotor is mounted inside the wire frame cavity, with the rotor located inside the coil and the coil axis perpendicular to the rotor axis; when the rocker swings back and forth, the swing shaft forces the magnetic cylinder to rotate through the outer and inner transmission pairs, and its magnetic poles reverse, and the coil cuts the magnetic lines of force to generate electricity.

2. The oscillation power generation device suitable for various low-frequency environments according to claim 1, characterized in that: The rocker's single motion forces the rotor to rotate more than one revolution. The relevant parameters are related as follows: R ≥ 2πR x r / (QR) d ), where: Q is the standard swirl angle of the plate, R, R d R x and r are the radii of the balance wheel, the outer large wheel, the outer small wheel, and the inner wheel, respectively. The radii of the balance wheel, the outer large wheel, the outer small wheel, and the inner wheel refer to the outer edge radius of the friction wheel or the pitch circle radius of the gear.

3. The oscillation power generation device suitable for various low-frequency environments according to claim 1, characterized in that: The outer edge of the oscillating plate and the inner wheel is provided with a friction layer or gear teeth, and the inner and outer transmission pairs are gear transmission pairs or friction transmission pairs.

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