Human body energy harvesting device based on planetary acceleration structure

Abstract

The invention discloses a human body energy harvesting device based on a planetary acceleration structure, which belongs to the technical field of energy collection and comprises a mounting mechanism, a planetary acceleration mechanism and a power generation mechanism. The mounting mechanism comprises a fixed rod and an input rod, and the end part of the input rod is movably connected with the end part of the fixed rod; the planetary acceleration mechanism is connected with the input rod, and the planetary acceleration mechanism is used for converting low-frequency motion input by the input rod into high-frequency rotation motion; the power generation mechanism is connected with the planetary acceleration mechanism and used for converting high-frequency rotation motion into electric energy. According to the human body energy harvesting device based on the planetary acceleration structure, low-frequency motion of knee joints can be converted into high-frequency rotation motion of the electromagnetic rotor through the planetary acceleration structure, and the power generation power is greatly improved. According to the invention, the limitation of low-frequency mechanical energy collection in human body activities in the prior art can be effectively solved, and the energy collection efficiency and stability are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of energy collection, and in particular to a human body energy capture device based on a planetary acceleration structure. Background Art

[0002] Energy, as the core driving force for the development of human society, has always been the key to scientific and technological progress and industrial development. During the Industrial Revolution, fossil fuels, as the main energy source, greatly promoted the improvement of productivity. However, the non-renewable nature of fossil fuels and their negative impact on the environment have forced the global society to accelerate the transition to a sustainable energy system. In this context, renewable energy such as solar energy, wind energy, and tidal energy have gradually become an important direction for optimizing the energy structure due to their clean and renewable characteristics. However, these energy sources are affected by factors such as geographical conditions and climate conditions, and their supply is intermittent and unstable, making it difficult to meet the continuous energy needs in all scenarios.

[0003] As a widely existing and under-exploited energy form, low-frequency mechanical energy has attracted extensive attention from the scientific research community. Low-frequency mechanical energy is widely distributed in nature and in human daily activities, such as the fluctuation of waves, human movement, operation of vehicles, and vibration of industrial equipment. These energy sources have huge potential energy reserves, but due to their low energy density, variable frequency, and large fluctuation range, they pose great challenges to effective capture and conversion.

[0004] In the existing technology, although piezoelectric, electromagnetic and electrostatic energy harvesters have solved the problem of mechanical energy conversion in some environments to a certain extent, their performance is significantly limited when facing low-frequency mechanical energy. Especially when facing low-frequency mechanical energy in human activities, factors such as device size effect and low-frequency response characteristics further restrict its energy collection efficiency and practicality. As an emerging technology, nano-friction energy harvester has shown certain potential in the field of low-frequency mechanical energy collection due to its unique triboelectric effect. However, the current nano-friction energy harvester is still insufficient in power generation and it is difficult to meet the power supply needs of large-scale applications or complex systems.

[0005] Therefore, designing a new energy harvester that can efficiently capture and convert low-frequency mechanical energy, especially one that performs well in human activity scenarios, is of great significance for promoting the development of sustainable energy technology and achieving energy self-sufficiency. Summary of the invention

[0006] In view of the problems existing in the above-mentioned prior art, the present invention provides a human energy capture device based on a planetary acceleration structure to solve the existing problems raised in the above-mentioned background technology. To achieve the above-mentioned purpose, the present invention provides the following technical solutions:

[0007] A human energy capture device based on a planetary acceleration structure comprises a mounting mechanism, a planetary acceleration mechanism and a power generation mechanism; the mounting mechanism comprises a fixed rod and an input rod, and the end of the input rod is movably connected to the end of the fixed rod; the planetary acceleration mechanism is connected to the input rod, and the planetary acceleration mechanism is used to convert the low-frequency motion input by the input rod into high-frequency rotational motion; the power generation mechanism is connected to the planetary acceleration mechanism, and the power generation mechanism is used to convert the high-frequency rotational motion into electrical energy.

[0008] Furthermore, the planetary acceleration mechanism includes an internal gear and at least one planetary acceleration unit arranged inside the internal gear; the input end of the planetary acceleration unit is connected to the input rod, and the output end of the planetary acceleration unit is connected to the power generation mechanism.

[0009] Furthermore, the planetary acceleration unit includes a planetary carrier, one side of the planetary carrier is fixedly connected to a planetary carrier input shaft, and the other side is provided with three groups of planetary gears, the planetary gears and the planetary carrier are connected through planetary gear shafts and planetary gear bearings; the three groups of planetary gears are meshed with the inner side of the internal gear, and a sun gear is meshed between the three groups of planetary gears, and the sun gear is located at the center of the planetary carrier; the planetary carrier input shaft and the input rod are fixedly connected, and the sun gear and the power generation mechanism are fixedly connected.

[0010] Furthermore, the number of the planetary acceleration units is set to two, and the two planetary acceleration units are arranged sequentially along the axial direction of the internal gear.

[0011] Furthermore, the power generation mechanism includes an electromagnetic power generation unit; the electromagnetic power generation unit includes a shell, a coil array is provided on the inner side of the shell, a magnetic ring is provided inside the coil array, and a rotor output shaft is fixed inside the magnetic ring; one end of the rotor output shaft is fixedly connected to the sun gear, and the other end is connected to the shell through a rotor bearing.

[0012] Furthermore, the coil array is mounted on the inner side of the housing via a coil holder.

[0013] Furthermore, the power generation mechanism also includes a friction power generation unit; the friction power generation unit includes an inner friction layer and an outer friction layer, the outer friction layer is attached to the inner wall of the coil holder, and the inner friction layer is attached to the outer side of the magnetic ring.

[0014] Furthermore, the bottom of the shell is provided with through holes for the electrodes of the electromagnetic power generation unit and the friction power generation unit to pass through.

[0015] Furthermore, the planet carrier input shaft outer sleeve is provided with a one-way bearing; the input rod is connected to the planet carrier input shaft via the one-way bearing.

[0016] Furthermore, it also includes an input end cover; the fixing rod and the input end cover are fixedly connected, and the input rod and the input end cover are movably connected; the outer peripheries of the outer shell, the internal gear and the input end cover are all provided with flanges, and the flanges are provided with threaded holes for connection.

[0017] The beneficial effects of the present invention are:

[0018] The present invention discloses a human energy harvesting device based on a planetary acceleration structure. The planetary acceleration structure is used to convert the low-frequency motion of the knee joint into the high-frequency rotational motion of the electromagnetic rotor, thereby realizing electromagnetic power generation. At the same time, friction power generation is also mixed and embedded to greatly improve the power generation. The present invention can effectively solve the limitations of the existing technology in the collection of low-frequency mechanical energy in human activities, improve the efficiency and stability of energy collection, and provide a new solution for realizing the sustainable use of energy and the construction of a self-powered system. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of a human body energy capture device based on a planetary acceleration structure disclosed in the present invention, which is in a compressed state at this time;

[0020] Figure 2 This is a schematic diagram of the overall structure of a human body energy capture device based on a planetary acceleration structure disclosed in the present invention, which is in an extended state at this time;

[0021] Figure 3 It is a cross-sectional view of a power generation mechanism of a human body energy capture device based on a planetary acceleration structure disclosed in the present invention;

[0022] Figure 4 It is an exploded diagram of a human body energy capture device based on a planetary acceleration structure disclosed in the present invention;

[0023] In the accompanying drawings: 1. mounting mechanism; 11. fixing rod; 12. input end cover; 13. input rod; 2. planetary acceleration mechanism; 21. internal gear; 22. planetary carrier input shaft; 23. planetary carrier; 24. planetary gear; 25. planetary gear shaft; 26. planetary gear bearing; 27. sun gear; 28. one-way bearing; 3. power generation mechanism; 31. housing; 32. coil array; 33. magnetic ring; 34. rotor output shaft; 35. rotor bearing; 36. coil retainer; 37. inner friction layer; 38. outer friction layer. DETAILED DESCRIPTION

[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods, but the present invention is not limited to the following embodiments.

[0025] Unless otherwise specified, in the present invention, the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", "x direction", "y direction", "z direction", etc. indicating orientation or position relationship are based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the orientation or position relationship in the present invention are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood in conjunction with the drawings and according to specific circumstances.

[0026] Embodiment 1:

[0027] See attached Figures 1 to 4 . The present invention discloses a human energy capture device based on a planetary acceleration structure, which is mainly composed of three parts: an installation mechanism 1, a planetary acceleration mechanism 2 and a power generation mechanism 3. Among them, the installation mechanism includes a fixed rod 11 and an input rod 13. The end of the input rod 13 is connected to the end of the fixed rod 11 by a hinge or other movable connection method, so that the input rod 13 can swing or rotate relative to the fixed rod 11 to simulate the dynamic input of the human body during movement. For example, the fixed rod 11 is bound to the human thigh, and the input rod 13 is bound to the calf. The energy of the bending of the human knee joint is input into the human energy capture device of the present invention through the input rod 13 and the fixed rod 11. It can be understood that the binding order of the input rod 13 and the fixed rod 11 to the human thigh and calf can be swapped. The planetary acceleration mechanism 2 is connected to the input rod 13, and the planetary acceleration mechanism 2 is used to convert the low-frequency motion input by the input rod 13 into high-frequency rotational motion; the power generation mechanism 3 is connected to the planetary acceleration mechanism 2, and the power generation mechanism 3 is used to convert the high-frequency rotational motion into electrical energy. The input end of the input rod 13, the planetary acceleration mechanism 2 and the power generation mechanism 3 are on the same axis.

[0028] During operation, the energy of knee joint bending is captured through the relative angular movement between the input rod 13 and the fixed rod 11; this rotational motion is amplified by the planetary acceleration mechanism 2, and the amplified rotational speed is transmitted to the generator mechanism 3, which converts the high-frequency rotational motion into electrical energy.

[0029] By designing a planetary acceleration mechanism 2, the present invention can effectively convert low-frequency, low-amplitude energy generated by human movement, such as vibration during walking and running, into high-frequency rotational motion, thereby greatly improving the energy conversion efficiency and significantly increasing the density and speed of energy collection, so that more electrical energy can be generated under the same amount of human activity.

[0030] Embodiment 2:

[0031] See attached Figures 1 to 4 On the basis of the first embodiment, in this embodiment, the specific structure of the planetary acceleration mechanism 2 is as follows:

[0032] The planetary acceleration mechanism 2 includes an internal gear 21 and at least one planetary acceleration unit arranged inside the internal gear 21. The internal gear 21 can be a cylindrical structure with a toothed structure on its inner side. The internal gear 21 can provide a fixed rotation center, support the planetary gear 24, transmit torque, and change the transmission ratio. The planetary acceleration unit is composed of a planetary carrier 23, a planetary carrier input shaft 22, three sets of planetary gears 24, a planetary gear shaft 25, a planetary gear bearing 26, and a sun gear 27. The planetary carrier input shaft 22 is fixedly connected to one side of the planetary carrier 23 and is connected to the input rod 13. The planetary gear 24 is installed on the other side of the planetary carrier 23 through the planetary gear shaft 25 and the planetary gear bearing 26, and is meshed with the inner side of the internal gear 21 and the sun gear 27. When the input rod 13 drives the planetary carrier input shaft 22 to rotate, the planetary carrier input shaft 22 drives the planetary carrier 23 to rotate, and the planetary carrier 23 drives the planetary gear 24 to rotate. The planetary gear 24 will drive the sun gear 27 to rotate at a higher speed to achieve the conversion from low frequency to high frequency.

[0033] It is understandable that in this embodiment, the specific acceleration level of the planetary acceleration mechanism 2 is not limited, and the planetary acceleration mechanism 2 can be a single-stage or multi-stage acceleration, and the transmission ratio of each stage is not necessarily the same. Among them, the transmission ratio of a single-stage planetary acceleration unit = the number of teeth of the internal gear / the number of teeth of the sun gear + 1.

[0034] Embodiment three:

[0035] See attached Figures 1 to 4 Based on the second embodiment, a planetary acceleration mechanism with two-stage acceleration is provided in this embodiment. Specifically, Figure 4 As shown, the number of planetary acceleration units is set to two, forming a two-stage planetary acceleration structure. For example, the two-stage transmission ratio can be set to five. The two planetary acceleration units are arranged in sequence along the axial direction of the internal gear 21, and the sun gear 27 of the first-stage planetary acceleration unit is used as the input of the second-stage planetary acceleration unit and is fixedly connected to the planetary carrier input shaft 22 of the second-stage planetary acceleration unit, further improving the efficiency and speed of energy conversion. The structure and working principle of the rest of the parts are the same as those of the second embodiment, and will not be repeated.

[0036] During operation, external force is transmitted to the first-stage planetary carrier input shaft 22, the first-stage planetary carrier 23 rotates, the first-stage planetary carrier 23 rotates together with the three sets of planetary gears 24 of the first stage, and then the rotation is transmitted to the first-stage sun gear 27; the first-stage sun gear 27 is fixed to the second-stage planetary carrier input shaft 22, so it drives the second-stage planetary carrier 23 to rotate, and the second-stage planetary carrier 23 transmits the rotation to the second-stage sun gear 27 in the same way, and the second-stage sun gear 27 is fixedly connected to the rotor output shaft 34 of the power generation mechanism 3, thereby driving the rotor output shaft 34 to rotate at high speed.

[0037] Through the design of a two-stage planetary acceleration structure, the human body energy capture device of this embodiment can more effectively convert low-frequency, low-amplitude human body movement energy into high-frequency, high-density electrical energy output, and is suitable for application scenarios with high electrical energy requirements.

[0038] Embodiment 4:

[0039] See attached Figures 1 to 4 . On the basis of the third embodiment, in this embodiment, the power generation mechanism 3 includes an electromagnetic power generation unit, which converts high-frequency rotational motion into electrical energy through the principle of electromagnetic induction. Specifically, the electromagnetic power generation unit includes a housing 31, a coil array 32, a magnetic ring 33, a rotor output shaft 34 and a rotor bearing 35. The housing 31 can be a cylindrical structure with one end open, the coil array 32 can be fixed to the inner side of the housing 31 through a coil holder 36, and the magnetic ring 33 is fixed to the rotor output shaft 34. One end of the rotor output shaft 34 is fixedly connected to the sun gear 27, and the other end is connected to the housing 31 through a rotor bearing 35. When the sun gear 27 rotates at high speed, it will drive the rotor output shaft 34 and the magnetic ring 33 to rotate, thereby generating an induced current in the coil array 32, realizing the conversion of mechanical energy into electrical energy. In the present invention, the motion input end is the input rod 13, and the output end is the rotor output shaft 34, and the planetary acceleration mechanism 2 is used to adjust the speed between the two.

[0040] Embodiment five:

[0041] See attached Figures 1 to 4 On the basis of the fourth embodiment, in this embodiment, the power generation mechanism 3 further includes a friction power generation unit, so that the power generation mechanism 3 realizes friction and electromagnetic hybrid power generation. The friction power generation unit can be designed based on the principle of nano friction power generation. Specifically, the friction power generation unit includes an inner friction layer 37 and an outer friction layer 38, such as Figure 3As shown, the outer friction layer 38 is attached to the inner wall of the coil holder 36, and the inner friction layer 37 is attached to the outer side of the magnetic ring 33. When the rotor output shaft 34 drives the magnetic ring 33 to rotate, while the magnetic flux lines of the coil array 32 are cut to generate electricity during the rotation process, the inner friction layer 37 attached to the magnetic ring 33 and the outer friction layer 38 attached to the coil holder 36 perform nano-friction power generation. The present invention combines the electromagnetic power generation unit with the friction power generation unit, which not only converts high-frequency rotational motion into electrical energy through the principle of electromagnetic induction, but also uses the frictional electricity generation effect to further increase the power output. This composite power generation method significantly improves the overall power generation efficiency, allowing the equipment to maintain stable power output under various motion states.

[0042] In one embodiment of the present application, a through hole is also provided at the bottom of the housing 31 for leading out the electrodes of the electromagnetic power generation unit and the friction power generation unit so as to facilitate connection with an external circuit.

[0043] In one embodiment of the present application, Figure 4 As shown, a one-way bearing 28 is also sleeved on the outer side of the planetary carrier input shaft 22. The input rod 13 and the planetary carrier input shaft 22 can be connected through the one-way bearing 28, or can be directly fixed without the one-way bearing 28, thereby realizing bidirectional power generation.

[0044] In one embodiment of the present application, the human energy capture device further comprises an input end cover 12, which is disposed at the end of the inner gear 21 away from the power generation mechanism 3, and the outer shell 31, the inner gear 21, and the input end cover 12 can constitute the shell frame of the entire human energy capture device, and the outer peripheries of the outer shell 31, the inner gear 21, and the input end cover 12 are all provided with flanges, and the three can be fixedly connected through threaded holes on the flanges. Among them, the fixing rod 11 is disposed on the outside of the input end cover 12, and the fixing rod 11 can be fixedly connected to the input end cover 12 by bolts; the input rod 13 is disposed on the inside of the input end cover 12, and the input rod 13 can be movably connected relative to the input end cover 12.

[0045] In one embodiment of the present application, lightweight openings are provided on the input rod 13 and the fixing rod 11 for installation and fixing.

[0046] The working principle of the human body energy capture device provided by the present invention is:

[0047] The fixed rod 11 is bound to the thigh of the human body, and the input rod 13 is bound to the calf. The energy of the bending of the human knee joint is input into the human energy capture device through the input rod 13 and the fixed rod 11. The planetary acceleration mechanism 2 with a two-stage transmission ratio of five, which is composed of the planetary frame input shaft 22, the planetary frame 23, the planetary wheel 24, the planetary wheel shaft 25, the planetary wheel bearing 26 and the sun wheel 27, accelerates the input rotational motion by twenty-five times and transmits it to the rotor output shaft 34, causing the magnetic ring 33 fixed thereto to rotate at a high speed, so that the coil array 32 cuts the magnetic flux lines to generate electricity, and at the same time, the inner friction layer 37 attached to the magnetic ring 33 and the outer friction layer 38 attached to the coil holder 36 perform nano-friction power generation. The electric energy generated by electromagnetic power generation and nano-friction power generation is led out from the two through holes at the bottom of the shell 31 through the electrodes. At this point, a complete power generation cycle of the human energy capture device is completed.

[0048] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A human energy capture device based on a planetary acceleration structure, characterized in that: The invention comprises a mounting mechanism (1), a planetary acceleration mechanism (2) and a power generation mechanism (3); the mounting mechanism (1) comprises a fixed rod (11) and an input rod (13), and the end of the input rod (13) is movably connected to the end of the fixed rod (11); the planetary acceleration mechanism (2) is connected to the input rod (13), and the planetary acceleration mechanism (2) is used to convert the low-frequency motion input by the input rod (13) into high-frequency rotational motion; the power generation mechanism (3) is connected to the planetary acceleration mechanism (2), and the power generation mechanism (3) is used to convert the high-frequency rotational motion into electrical energy.

2. The human body energy capture device based on a planetary acceleration structure according to claim 1, characterized in that: The planetary acceleration mechanism (2) comprises an internal gear (21) and at least one planetary acceleration unit arranged inside the internal gear (21); the input end of the planetary acceleration unit is connected to the input rod (13), and the output end of the planetary acceleration unit is connected to the power generation mechanism (3).

3. The human body energy capture device based on a planetary acceleration structure according to claim 2, characterized in that: The planetary acceleration unit comprises a planet carrier (23), one side of the planet carrier (23) is fixedly connected to a planet carrier input shaft (22), and the other side is provided with three groups of planetary gears (24), the planetary gears (24) and the planet carrier (23) are connected via planetary gear shafts (25) and planetary gear bearings (26); the three groups of planetary gears (24) are meshed with the inner side of the internal gear (21), a sun gear (27) is meshed between the three groups of planetary gears (24), and the sun gear (27) is located at the center of the planet carrier (23); the planet carrier input shaft (22) and the input rod (13) are fixedly connected, and the sun gear (27) and the power generation mechanism (3) are fixedly connected.

4. The human body energy capture device based on a planetary acceleration structure according to claim 3, characterized in that: The number of the planetary acceleration units is set to two, and the two planetary acceleration units are arranged in sequence along the axial direction of the internal gear (21).

5. The human body energy capture device based on a planetary acceleration structure according to claim 3 or 4, characterized in that: The power generation mechanism (3) comprises an electromagnetic power generation unit; the electromagnetic power generation unit comprises a shell (31); a coil array (32) is provided on the inner side of the shell (31); a magnetic ring (33) is provided inside the coil array (32); a rotor output shaft (34) is fixed inside the magnetic ring (33); one end of the rotor output shaft (34) is fixedly connected to the sun gear (27); the other end is connected to the shell (31) via a rotor bearing (35).

6. The human body energy capture device based on a planetary acceleration structure according to claim 5, characterized in that: The coil array (32) is mounted on the inner side of the housing (31) via a coil holder (36).

7. The human body energy capture device based on a planetary acceleration structure according to claim 6, characterized in that: The power generation mechanism (3) also includes a friction power generation unit; the friction power generation unit includes an inner friction layer (37) and an outer friction layer (38), the outer friction layer (38) is attached to the inner wall of the coil holder (36), and the inner friction layer (37) is attached to the outer side of the magnetic ring (33).

8. The human body energy capture device based on a planetary acceleration structure according to claim 7, characterized in that: The bottom of the housing (31) is provided with through holes for the electrodes of the electromagnetic power generation unit and the friction power generation unit to pass through.

9. The human body energy capture device based on a planetary acceleration structure according to claim 3, characterized in that: The planet carrier input shaft (22) is provided with a one-way bearing (28) on its outer sleeve; the input rod (13) is connected to the planet carrier input shaft (22) via the one-way bearing (28).

10. The human body energy capture device based on a planetary acceleration structure according to claim 5, characterized in that: It also includes an input end cover (12); the fixing rod (11) and the input end cover (12) are fixedly connected, and the input rod (13) and the input end cover (12) are movably connected; the outer peripheries of the housing (31), the internal gear (21) and the input end cover (12) are all provided with flanges, and the flanges are provided with threaded holes for connection.

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