阅读说明：本技术 一种基于机械整流的混合振动能量收集器 (Hybrid vibration energy collector based on mechanical rectification ) 是由 胡翔 孙洪鑫 宋晨 段学涛 周磊 李雅楠 于 2021-01-06 设计创作，主要内容包括：本申请提供了一种基于机械整流的混合振动能量收集器,包括机箱,所述机箱上设有机械整流装置、电磁感应模块和压电摩擦发电模块,所述机械整流装置与所述电磁感应模块传动连接并向所述电磁感应模块传输单向扭矩,所述机械整流装置与所述压电摩擦发电模块传动连接并向压电摩擦发电模块传输双向扭矩。本申请利用机械整流装置收集振动源的振动能,并利用机械整流装置将输入的线性振动分别转化为单向和双向转动使两个发电模块的输出均能得到最大化,以此提高能量利用率和输出的稳定性,是传感器供电的一种优秀解决方案。(The application provides a mix vibration energy collector based on mechanical rectification, which comprises a case, be equipped with mechanical fairing, electromagnetic induction module and piezoelectricity friction power generation module on the machine case, mechanical fairing with the transmission of electromagnetic induction module is connected and to the one-way moment of torsion of electromagnetic induction module transmission, mechanical fairing with the transmission of piezoelectricity friction power generation module is connected and to the two-way moment of torsion of piezoelectricity friction power generation module transmission. The vibration energy of vibration source is collected to this application utilization machinery fairing to utilize machinery fairing to turn into the linear vibration of input respectively one-way and two-way rotation and make the output homoenergetic of two power generation modules obtain the maximize, with this stability that improves energy utilization and output, be an outstanding solution of sensor power supply.)

1. The utility model provides a mix vibration energy collector based on machinery rectification, its characterized in that, includes quick-witted case (1), be equipped with mechanical fairing (2), electromagnetic induction module (3) and piezoelectricity friction power generation module (4) on quick-witted case (1), mechanical fairing (2) with electromagnetic induction module (3) transmission is connected and to electromagnetic induction module (3) transmission unidirectional torque, mechanical fairing (2) with piezoelectricity friction power generation module (4) transmission is connected and to piezoelectricity friction power generation module (4) transmission bidirectional torque.

2. The hybrid vibration energy collector based on mechanical rectification according to claim 1, wherein the mechanical rectification device (2) comprises a transmission gear (21) and a transmission rack (22) meshed with the transmission gear (21), one side of the transmission gear (21) is provided with a one-way bearing (23), the outer ring of the one-way bearing (23) is connected with the transmission gear (21), the inner ring of the one-way bearing (23) is connected with a first output shaft (24), the electromagnetic induction module (3) is connected with the first output shaft (24), the other side of the transmission gear (21) is provided with a second output shaft (25), and the piezoelectric friction power generation module (4) is connected with the second output shaft (25).

3. The mechanical rectification-based hybrid vibration energy collector according to claim 2, wherein the electromagnetic induction module (3) comprises a coil rotor (31), a multi-pole magnetic ring (32) sleeved outside the coil rotor (31), and a first outer barrel (33) sleeved outside the multi-pole magnetic ring (32) and fixedly connected with the multi-pole magnetic ring (32), the first outer barrel (33) is fixedly connected with the case (1), one end of the coil rotor (31) is connected with the first output shaft (24), and the other end of the coil rotor (31) is provided with an inertial volume (34).

4. A mechanical rectification based hybrid vibration energy harvester according to claim 3, characterized in that the coil rotor (31) comprises a rotor body (311) and a wire (312) wound on the outside of the rotor body (311), the outside of the rotor body (311) being provided with a plurality of wire grooves (3111) for the wire (312) to be wound.

5. A mechanical rectification based hybrid vibration energy harvester according to claim 3 wherein the multi-pole magnet ring (32) is a ring body, the multi-pole magnet ring (32) being made of ferrite or rubidium magnets.

6. The mechanical rectification based hybrid vibration energy harvester of claim 4 wherein the wire (312) is an enameled copper wire.

7. A mechanical rectification based hybrid vibration energy harvester according to claim 3, characterized in that the gap between the coil rotor (31) and the multi-pole magnetic ring (32) is 1-2 mm.

8. The mechanical rectification-based hybrid vibration energy collector according to claim 2, wherein the piezoelectric friction power generation module (4) comprises a friction power generation rotor (41) connected with the second output shaft (25), a friction power generation sleeve (42) surrounding and attached to the outer surface of the friction power generation rotor (41) and matching with the friction power generation rotor (41) to generate friction power, a second outer cylinder (43) sleeved outside the friction power generation sleeve (42) and fixedly connected with the case (1), and a piezoelectric sheet (44) connecting the second outer cylinder (43) and the friction power generation sleeve (42).

9. A mechanical rectification based hybrid vibration energy harvester according to claim 8, characterized in that the outer surface of the triboelectric rotor (41) is circumferentially spaced apart with a plurality of first triboelectric layers (45), and the inner surface of the triboelectric sleeve (42) is circumferentially spaced apart with a plurality of second triboelectric layers (46).

10. The mechanical rectification based hybrid vibration energy harvester of claim 9 wherein the first triboelectric power generation layer (45) is made of poly-tetrachloroethylene, the second triboelectric power generation layer (46) is made of polyvinyl chloride, and the piezoelectric patch (44) is made of a composite fiber material.

[ technical field ] A method for producing a semiconductor device

The application belongs to the technical field of energy collection, and particularly relates to a hybrid vibration energy collector based on mechanical rectification.

[ background of the invention ]

Over the past decade, energy harvesting technology has made significant advances, and domestic and foreign researchers have studied and developed a variety of energy harvesters that collect and convert ambient renewable/sustainable energy sources (e.g., vibrational energy) into electrical energy by implementing various conversion mechanisms, such as photovoltaic, thermoelectric, piezoelectric, electromagnetic, triboelectric, etc., thereby providing sustainable electrical power solutions. Currently, energy harvesters are typically designed to harvest energy using a single conversion mechanism. However, the energy harvester with a single conversion mechanism generally has the problems of poor stability or low energy collection efficiency.

[ summary of the invention ]

The purpose of the application is to utilize the characteristics of different power generation modes to enable the energy collector to have considerable energy output at each stage of the motion period of the vibration source, so that the stability of generated power and output voltage is improved on the premise of not greatly increasing the volume and the mass of the device.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a mix vibration energy collector based on mechanical rectification, includes quick-witted case, be equipped with mechanical fairing, electromagnetic induction module and piezoelectricity friction power generation module on the quick-witted case, mechanical fairing with the transmission of electromagnetic induction module is connected and to the one-way moment of torsion of electromagnetic induction module transmission, mechanical fairing with piezoelectricity friction power generation module transmission is connected and to piezoelectricity friction power generation module transmission two-way moment of torsion.

The mechanical rectification-based hybrid vibration energy collector comprises a transmission gear and a transmission rack meshed with the transmission gear, wherein one side of the transmission gear is provided with a one-way bearing, the outer ring of the one-way bearing is connected with the transmission gear, the inner ring of the one-way bearing is connected with a first output shaft, the electromagnetic induction module is connected with the first output shaft, the other side of the transmission gear is provided with a second output shaft, and the piezoelectric friction power generation module is connected with the second output shaft.

The mechanical rectification-based hybrid vibration energy collector comprises an electromagnetic induction module and a power supply module, wherein the electromagnetic induction module comprises a coil rotor, a multi-pole magnetic ring sleeved outside the coil rotor, and a first outer barrel sleeved outside the multi-pole magnetic ring and fixedly connected with the multi-pole magnetic ring, the first outer barrel is fixedly connected with a case, one end of the coil rotor is connected with a first output shaft, and the other end of the coil rotor is provided with an inertial volume.

The hybrid vibration energy collector based on mechanical rectification comprises a rotor body and a wire wound on the outer side of the rotor body, wherein a plurality of wire grooves for winding the wire are formed in the outer side of the rotor body.

The hybrid vibration energy collector based on mechanical rectification is characterized in that the multi-pole magnetic ring is a circular ring main body and is made of ferrite or rubidium magnet.

A hybrid vibration energy harvester based on mechanical rectification as described above, said wire being an enameled copper wire.

In the hybrid vibration energy collector based on mechanical rectification, the gap between the coil rotor and the multi-pole magnetic ring is 1-2 mm.

The hybrid vibration energy collector based on mechanical rectification comprises a friction power generation rotor connected with the second output shaft, a friction power generation sleeve surrounding and attached to the outer surface of the friction power generation rotor and matched with the friction power generation rotor to generate power through friction, a second outer cylinder sleeved on the outer side of the friction power generation sleeve and fixedly connected with the case, and a piezoelectric sheet connected with the second outer cylinder and the friction power generation sleeve.

According to the hybrid vibration energy collector based on mechanical rectification, a plurality of first friction power generation layers are distributed on the outer surface of the friction power generation rotor at intervals along the circumferential direction, and a plurality of second friction power generation layers are distributed on the inner surface of the friction power generation sleeve at intervals along the circumferential direction.

The hybrid vibration energy collector based on mechanical rectification comprises a first friction power generation layer, a second friction power generation layer and a piezoelectric sheet, wherein the first friction power generation layer is made of polytetrafluoroethylene, the second friction power generation layer is made of polyvinyl chloride, and the piezoelectric sheet is made of composite fiber materials.

Compared with the prior art, the method has the following advantages:

the vibration energy of vibration source is collected to this application utilization machinery fairing to utilize machinery fairing to turn into the linear vibration of input respectively one-way and two-way rotation and make the output homoenergetic of two power generation modules obtain the maximize, with this stability that improves energy utilization and output, be an outstanding solution of sensor power supply. Compared with a single conversion mode energy collection system, the system converts energy into electric energy through multiple conversion modes. The reasonable mixing of multiple energy conversion mechanisms can not only improve the space utilization efficiency, but also obviously improve the power output.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below.

FIG. 1 is a schematic illustration of a hybrid vibration energy harvester based on mechanical rectification;

FIG. 2 is a schematic view of a mechanical rectification based internal transmission structure of the hybrid vibration energy harvester;

FIG. 3 is a cross-sectional view taken along A-A of FIG. 1;

FIG. 4 is a schematic view of a rotor body of the coil rotor;

fig. 5 is a cross-sectional view taken along line B-B of fig. 1.

[ detailed description ] embodiments

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be obtained by a person skilled in the art based on the embodiments of the present invention without any inventive step are within the scope of the present invention.

As shown in fig. 1 and fig. 2, the embodiment discloses a hybrid vibration energy collector based on mechanical rectification, which includes a case 1, wherein the case 1 is divided into three chambers, and is respectively provided with a mechanical rectification device 2, an electromagnetic induction module 3 and a piezoelectric friction power generation module 4, and the case can be opened for inspection and replacement when necessary. Mechanical fairing 2 is used for gathering the vibration energy of vibration source, mechanical fairing 2 with 3 transmission connections of electromagnetic induction module and to electromagnetic induction module 3 transmission one-way moment of torsion is in order to produce the electromotive force, mechanical fairing 2 with 4 transmission connections of piezoelectricity friction power generation module and to piezoelectricity friction power generation module 4 transmission two-way moment of torsion in order to produce the electromotive force. The embodiment collects the vibration energy of the vibration source by using the mechanical rectifying device, and converts the input linear vibration into unidirectional rotation and bidirectional rotation respectively by using the mechanical rectifying device, so that the output of the two power generation modules can be maximized, the energy utilization rate and the output stability are improved, and the mechanical rectifying device is an excellent solution for supplying power to the sensor. Compared with a single conversion mode energy collection system, the system converts energy into electric energy through multiple conversion modes. The reasonable mixing of multiple energy conversion mechanisms can not only improve the space utilization efficiency, but also obviously improve the power output.

Further, the mechanical rectifying device 2 comprises a transmission gear 21 and a transmission rack 22 meshed with the transmission gear 21, the transmission rack 22 is connected with a vibration source and does reciprocating linear motion along with the vibration of the vibration source to drive the transmission gear 21 to rotate in two directions, a one-way bearing 23 is arranged on one side of the transmission gear 21, the outer ring of the one-way bearing 23 is connected with the transmission gear 21, the inner ring of the one-way bearing 23 is connected with a first output shaft 24, the electromagnetic induction module 3 is connected with the first output shaft 24, a second output shaft 25 is arranged on the other side of the transmission gear 21, and the piezoelectric friction power generation module 4 is connected with the second output shaft 25. The heart of the mechanical rectification device 2 is the rack-and-pinion pair, the geometric dimensions (modulus) of which are determined by the motion characteristics (amplitude, frequency, impact characteristics, etc.) of the vibration source, from which the geometric dimensions of the other parts of the hybrid vibration energy harvester based on mechanical rectification, and even the entire device, can be determined after the modulus of the rack-and-pinion pair has been determined. Specifically, the technical indexes of the rack-and-pinion pair mainly include transmission efficiency, idle stroke and service life, a gear with higher precision should be adopted for vibration with smaller amplitude, a soft tooth surface should be adopted for vibration with stronger impact, and a hardened and tempered gear can be adopted for vibration with higher frequency to improve the service life. When the mass of the vibration source is very large (such as a bridge and a building), a gear box can be added in the mechanical rectifying device to improve the energy recovery efficiency. The key part of the mechanical rectifying device is a one-way bearing, and the characteristic is that the inner ring and the outer ring can freely rotate along a certain direction, but can be locked and transmit torque along the other direction, so the key indexes of the mechanical rectifying device have the maximum torque and the service life besides the geometric dimension. According to the configuration of fig. 2, one side of the transmission gear is connected with the first output shaft 24 through the one-way bearing, and the other side is directly connected with the second output shaft 25, so that the mechanical rectifying device is in a single-input and double-output configuration, wherein the input is in reciprocating linear motion, and the output is only torque with time variation in magnitude, namely torque output by the first output shaft 24, and torque with time variation in magnitude and direction, namely torque output by the second output shaft 25. And then the first output shaft 24 is in transmission connection with the electromagnetic induction module 3, and the second output shaft 25 is in transmission connection with the piezoelectric friction power generation module 4, so that the input linear vibration can be effectively converted into unidirectional rotation and bidirectional rotation respectively, and the output of the two power generation modules, namely the electromagnetic induction module 3 and the piezoelectric friction power generation module 4, can be maximized.

Further, as shown in fig. 3, the electromagnetic induction module 3 includes a coil rotor 31, a multi-pole magnetic ring 32 sleeved outside the coil rotor 31, and a first outer cylinder 33 sleeved outside the multi-pole magnetic ring 32 and fixedly connected to the multi-pole magnetic ring 32, wherein the coil rotor 31 can freely rotate in the multi-pole magnetic ring 32, preferably, the multi-pole magnetic ring 32 is a circular ring main body, and the multi-pole magnetic ring 32 is made of ferrite or rubidium magnet. The first outer cylinder 33 is fixedly connected with the case 1, one end of the coil rotor 31 is connected with the first output shaft 24, and the other end of the coil rotor 31 is provided with an inertia container 34, so that unidirectional rotation of the coil rotor 31 is realized. The power generation principle of the electromagnetic induction module is that a coil rotor cuts magnetic induction lines to generate potential difference when rotating relative to a multi-pole magnetic ring, and the multi-pole magnetic ring made of ferrite or rubidium magnets has high surface magnetic flux and changes into an approximate sine curve, so that the efficiency of electromagnetic power generation can be improved. Since the electromagnetic induction module obtains torque from the first output shaft connected to the one-way bearing, which torque exists only in a certain segment of one movement cycle, the coil rotor can only keep rotating by its own inertia at the time of no torque input. By adding additional mass, namely inertial volume, on the coil rotor, the lowest speed of the coil rotor in a motion period can be improved, so that the coil rotor keeps stable rotation, and the stability of generated power and output voltage is improved. In order to ensure the efficiency of cutting the magnetic induction lines, the gap between the coil rotor 31 and the multi-pole magnetic ring 32 is 1-2 mm.

Further, as shown in fig. 3 and 4, the coil rotor 31 includes a rotor body 311 and a conductive wire 312 wound on the outer side of the rotor body 311, and preferably, the conductive wire 312 is an enameled copper wire. In order to facilitate winding of the conductive wires and improve the efficiency of cutting the magnetic induction wires, a plurality of conductive wire grooves 3111 for winding of the conductive wires 312 are formed on the outer side of the rotor body 311.

Further, as shown in fig. 5, the piezoelectric friction power generation module 4 includes a friction power generation rotor 41 connected to the second output shaft 25, a friction power generation sleeve 42 surrounding and attached to an outer surface of the friction power generation rotor 41 and matching with the friction power generation rotor 41 to generate power through friction, a second outer cylinder 43 sleeved outside the friction power generation sleeve 42 and fixedly connected to the housing 1, and a piezoelectric sheet 44 connecting the second outer cylinder 43 and the friction power generation sleeve 42, wherein the number of the piezoelectric sheets can be adjusted according to actual engineering requirements. In order to effectively realize the friction power generation, a plurality of first friction power generation layers 45 are circumferentially distributed on the outer surface of the friction power generation rotor 41 at intervals, and a plurality of second friction power generation layers 46 are circumferentially distributed on the inner surface of the friction power generation sleeve 42 at intervals, preferably, the first friction power generation layers 45 are made of polytetrafluoroethylene, and the second friction power generation layers 46 are made of polyvinyl chloride. Because the outer surface of the friction power generation rotor is tightly attached to the inner surface of the friction power generation sleeve, the static friction force between the friction power generation rotor and the inner surface of the friction power generation sleeve enables the friction power generation rotor to drive the friction power generation sleeve to rotate together when rotating, and the rotating friction power generation sleeve enables the piezoelectric plate to deform and generate potential difference. When the deformation of the piezoelectric plate is increased to the extent that the stress of the piezoelectric plate can overcome the static friction force between the friction power generation rotor and the friction power generation sleeve, the deformation of the piezoelectric plate is not increased any more, and the friction power generation rotor and the friction power generation sleeve begin to rotate relatively. Because the outer surface of the friction power generation rotor and the inner surface of the friction power generation sleeve are respectively provided with high polymer with different electron losing capabilities, such as polytetrafluoroethylene and polyvinyl chloride, along the cylindrical surface at intervals in the circumferential direction, the relative rotation of the high polymer and the polyvinyl chloride can generate electricity by friction and output current. In the process, the piezoelectric sheet needs to have certain elasticity and rigidity, and the composite fiber material can be selected by combining the mechanical index and the electrical index of the piezoelectric sheet.

The embodiment collects the vibration energy of the vibration source by using the mechanical rectifying device, and converts the input linear vibration into unidirectional rotation and bidirectional rotation respectively by using the mechanical rectifying device, so that the output of the two power generation modules can be maximized, the energy utilization rate and the output stability are improved, and the mechanical rectifying device is an excellent solution for supplying power to the sensor. Compared with a single conversion mode energy collection system, the system converts energy into electric energy through multiple conversion modes. The reasonable mixing of multiple energy conversion mechanisms can not only improve the space utilization efficiency, but also obviously improve the power output.

The working principle of the embodiment is as follows:

in the mechanical rectifying device, the transmission rack is driven by the vibration source to do reciprocating linear motion to drive the transmission gear to do reciprocating rotation. The outer ring of the one-way bearing and the transmission gear rotate reciprocally together, but due to the characteristics of the one-way bearing, the inner ring and the outer ring of the one-way bearing can only perform one-way relative sliding, so that the first output shaft connected with the inner ring of the one-way bearing can only perform one-way rotation, and the second output shaft is directly connected with the transmission gear, so that the second output shaft can perform reciprocating rotation along with the transmission gear.

In the electromagnetic induction module, the coil rotor is driven by the first output shaft to rotate in a single direction relative to the multi-pole magnetic ring, and the magnetic induction lines are cut to generate electromotive force. In the movement process of the one-way bearing, when the inner ring and the outer ring of the one-way bearing are meshed, the gear outputs torque to the first output shaft, so that the angular speed of the coil rotor and the inertia capacitor is increased, when the inner ring and the outer ring of the one-way bearing slide relatively, no torque is input to the first output shaft, the coil rotor overcomes resistance by means of inertia of the inertia capacitor to continuously rotate, and simultaneously, the magnetic induction line is cut to generate electromotive force.

And the friction power generation rotor of the piezoelectric friction power generation module is driven by the second output shaft to rotate in two directions. During rotation, due to static friction force between the friction power generation rotor and the friction power generation sleeve, the friction power generation rotor and the friction power generation sleeve are kept relatively static, and then the friction power generation sleeve rotates relative to the case, so that the piezoelectric plate is deformed and generates potential difference. When the stress of the piezoelectric plate is enough to overcome the static friction force between the friction power generation rotor and the friction power generation sleeve, the piezoelectric plate, the friction power generation sleeve and the case are kept relatively static, the friction power generation rotor and the friction power generation sleeve rotate relatively, and the contact surfaces of the friction power generation rotor and the friction power generation sleeve rub against each other to generate a potential difference.

The foregoing is illustrative of the various embodiments provided in connection with the detailed description and the specific implementations of the application are not intended to be limited to the illustrations. Similar or identical methods, structures, etc. as used herein, or several technical deductions or substitutions made on the premise of the idea of the present application, should be considered as the protection scope of the present application.